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android / platform / external / protobuf / 1576414e9ead2684bf3d50de7ae162c0183017db / . / ruby / ext / google / protobuf_c / ruby-upb.c
blob: 3d3c35be93181754da9b73fac1c5aee4977fc7a8 [file] [log] [blame]
/* Amalgamated source file */
#include "ruby-upb.h"
/*
* Copyright (c) 2009-2021, Google LLC
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of Google LLC nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL Google LLC BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/*
* This is where we define macros used across upb.
*
* All of these macros are undef'd in port_undef.inc to avoid leaking them to
* users.
*
* The correct usage is:
*
* #include "upb/foobar.h"
* #include "upb/baz.h"
*
* // MUST be last included header.
* #include "upb/port_def.inc"
*
* // Code for this file.
* // <...>
*
* // Can be omitted for .c files, required for .h.
* #include "upb/port_undef.inc"
*
* This file is private and must not be included by users!
*/
#if !((defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L) || \
(defined(__cplusplus) && __cplusplus >= 201103L) || \
(defined(_MSC_VER) && _MSC_VER >= 1900))
#error upb requires C99 or C++11 or MSVC >= 2015.
#endif
#include <stdint.h>
#include <stddef.h>
#if UINTPTR_MAX == 0xffffffff
#define UPB_SIZE(size32, size64) size32
#else
#define UPB_SIZE(size32, size64) size64
#endif
/* If we always read/write as a consistent type to each address, this shouldn't
* violate aliasing.
*/
#define UPB_PTR_AT(msg, ofs, type) ((type*)((char*)(msg) + (ofs)))
#define UPB_READ_ONEOF(msg, fieldtype, offset, case_offset, case_val, default) \
*UPB_PTR_AT(msg, case_offset, int) == case_val \
? *UPB_PTR_AT(msg, offset, fieldtype) \
: default
#define UPB_WRITE_ONEOF(msg, fieldtype, offset, value, case_offset, case_val) \
*UPB_PTR_AT(msg, case_offset, int) = case_val; \
*UPB_PTR_AT(msg, offset, fieldtype) = value;
#define UPB_MAPTYPE_STRING 0
/* UPB_INLINE: inline if possible, emit standalone code if required. */
#ifdef __cplusplus
#define UPB_INLINE inline
#elif defined (__GNUC__) || defined(__clang__)
#define UPB_INLINE static __inline__
#else
#define UPB_INLINE static
#endif
#define UPB_MALLOC_ALIGN 8
#define UPB_ALIGN_UP(size, align) (((size) + (align) - 1) / (align) * (align))
#define UPB_ALIGN_DOWN(size, align) ((size) / (align) * (align))
#define UPB_ALIGN_MALLOC(size) UPB_ALIGN_UP(size, UPB_MALLOC_ALIGN)
#define UPB_ALIGN_OF(type) offsetof (struct { char c; type member; }, member)
// Hints to the compiler about likely/unlikely branches.
#if defined (__GNUC__) || defined(__clang__)
#define UPB_LIKELY(x) __builtin_expect((bool)(x), 1)
#define UPB_UNLIKELY(x) __builtin_expect((bool)(x), 0)
#else
#define UPB_LIKELY(x) (x)
#define UPB_UNLIKELY(x) (x)
#endif
// Macros for function attributes on compilers that support them.
#ifdef __GNUC__
#define UPB_FORCEINLINE __inline__ __attribute__((always_inline))
#define UPB_NOINLINE __attribute__((noinline))
#define UPB_NORETURN __attribute__((__noreturn__))
#define UPB_PRINTF(str, first_vararg) __attribute__((format (printf, str, first_vararg)))
#elif defined(_MSC_VER)
#define UPB_NOINLINE
#define UPB_FORCEINLINE
#define UPB_NORETURN __declspec(noreturn)
#define UPB_PRINTF(str, first_vararg)
#else /* !defined(__GNUC__) */
#define UPB_FORCEINLINE
#define UPB_NOINLINE
#define UPB_NORETURN
#define UPB_PRINTF(str, first_vararg)
#endif
#define UPB_MAX(x, y) ((x) > (y) ? (x) : (y))
#define UPB_MIN(x, y) ((x) < (y) ? (x) : (y))
#define UPB_UNUSED(var) (void)var
// UPB_ASSUME(): in release mode, we tell the compiler to assume this is true.
#ifdef NDEBUG
#ifdef __GNUC__
#define UPB_ASSUME(expr) if (!(expr)) __builtin_unreachable()
#elif defined _MSC_VER
#define UPB_ASSUME(expr) if (!(expr)) __assume(0)
#else
#define UPB_ASSUME(expr) do {} while (false && (expr))
#endif
#else
#define UPB_ASSUME(expr) assert(expr)
#endif
/* UPB_ASSERT(): in release mode, we use the expression without letting it be
* evaluated. This prevents "unused variable" warnings. */
#ifdef NDEBUG
#define UPB_ASSERT(expr) do {} while (false && (expr))
#else
#define UPB_ASSERT(expr) assert(expr)
#endif
#if defined(__GNUC__) || defined(__clang__)
#define UPB_UNREACHABLE() do { assert(0); __builtin_unreachable(); } while(0)
#else
#define UPB_UNREACHABLE() do { assert(0); } while(0)
#endif
/* UPB_SETJMP() / UPB_LONGJMP(): avoid setting/restoring signal mask. */
#ifdef __APPLE__
#define UPB_SETJMP(buf) _setjmp(buf)
#define UPB_LONGJMP(buf, val) _longjmp(buf, val)
#else
#define UPB_SETJMP(buf) setjmp(buf)
#define UPB_LONGJMP(buf, val) longjmp(buf, val)
#endif
/* UPB_PTRADD(ptr, ofs): add pointer while avoiding "NULL + 0" UB */
#define UPB_PTRADD(ptr, ofs) ((ofs) ? (ptr) + (ofs) : (ptr))
/* Configure whether fasttable is switched on or not. *************************/
#ifdef __has_attribute
#define UPB_HAS_ATTRIBUTE(x) __has_attribute(x)
#else
#define UPB_HAS_ATTRIBUTE(x) 0
#endif
#if UPB_HAS_ATTRIBUTE(musttail)
#define UPB_MUSTTAIL __attribute__((musttail))
#else
#define UPB_MUSTTAIL
#endif
#undef UPB_HAS_ATTRIBUTE
/* This check is not fully robust: it does not require that we have "musttail"
* support available. We need tail calls to avoid consuming arbitrary amounts
* of stack space.
*
* GCC/Clang can mostly be trusted to generate tail calls as long as
* optimization is enabled, but, debug builds will not generate tail calls
* unless "musttail" is available.
*
* We should probably either:
* 1. require that the compiler supports musttail.
* 2. add some fallback code for when musttail isn't available (ie. return
* instead of tail calling). This is safe and portable, but this comes at
* a CPU cost.
*/
#if (defined(__x86_64__) || defined(__aarch64__)) && defined(__GNUC__)
#define UPB_FASTTABLE_SUPPORTED 1
#else
#define UPB_FASTTABLE_SUPPORTED 0
#endif
/* define UPB_ENABLE_FASTTABLE to force fast table support.
* This is useful when we want to ensure we are really getting fasttable,
* for example for testing or benchmarking. */
#if defined(UPB_ENABLE_FASTTABLE)
#if !UPB_FASTTABLE_SUPPORTED
#error fasttable is x86-64/ARM64 only and requires GCC or Clang.
#endif
#define UPB_FASTTABLE 1
/* Define UPB_TRY_ENABLE_FASTTABLE to use fasttable if possible.
* This is useful for releasing code that might be used on multiple platforms,
* for example the PHP or Ruby C extensions. */
#elif defined(UPB_TRY_ENABLE_FASTTABLE)
#define UPB_FASTTABLE UPB_FASTTABLE_SUPPORTED
#else
#define UPB_FASTTABLE 0
#endif
/* UPB_FASTTABLE_INIT() allows protos compiled for fasttable to gracefully
* degrade to non-fasttable if we are using UPB_TRY_ENABLE_FASTTABLE. */
#if !UPB_FASTTABLE && defined(UPB_TRY_ENABLE_FASTTABLE)
#define UPB_FASTTABLE_INIT(...)
#else
#define UPB_FASTTABLE_INIT(...) __VA_ARGS__
#endif
#undef UPB_FASTTABLE_SUPPORTED
/* ASAN poisoning (for arena) *************************************************/
#if defined(__SANITIZE_ADDRESS__)
#define UPB_ASAN 1
#ifdef __cplusplus
extern "C" {
#endif
void __asan_poison_memory_region(void const volatile *addr, size_t size);
void __asan_unpoison_memory_region(void const volatile *addr, size_t size);
#ifdef __cplusplus
} /* extern "C" */
#endif
#define UPB_POISON_MEMORY_REGION(addr, size) \
__asan_poison_memory_region((addr), (size))
#define UPB_UNPOISON_MEMORY_REGION(addr, size) \
__asan_unpoison_memory_region((addr), (size))
#else
#define UPB_ASAN 0
#define UPB_POISON_MEMORY_REGION(addr, size) \
((void)(addr), (void)(size))
#define UPB_UNPOISON_MEMORY_REGION(addr, size) \
((void)(addr), (void)(size))
#endif
/* Disable proto2 arena behavior (TEMPORARY) **********************************/
#ifdef UPB_DISABLE_PROTO2_ENUM_CHECKING
#define UPB_TREAT_PROTO2_ENUMS_LIKE_PROTO3 1
#else
#define UPB_TREAT_PROTO2_ENUMS_LIKE_PROTO3 0
#endif
/** upb/collections.c ************************************************************/
#include <string.h>
/* Strings/bytes are special-cased in maps. */
static char _upb_CTypeo_mapsize[12] = {
0,
1, /* kUpb_CType_Bool */
4, /* kUpb_CType_Float */
4, /* kUpb_CType_Int32 */
4, /* kUpb_CType_UInt32 */
4, /* kUpb_CType_Enum */
sizeof(void*), /* kUpb_CType_Message */
8, /* kUpb_CType_Double */
8, /* kUpb_CType_Int64 */
8, /* kUpb_CType_UInt64 */
0, /* kUpb_CType_String */
0, /* kUpb_CType_Bytes */
};
static const char _upb_CTypeo_sizelg2[12] = {
0,
0, /* kUpb_CType_Bool */
2, /* kUpb_CType_Float */
2, /* kUpb_CType_Int32 */
2, /* kUpb_CType_UInt32 */
2, /* kUpb_CType_Enum */
UPB_SIZE(2, 3), /* kUpb_CType_Message */
3, /* kUpb_CType_Double */
3, /* kUpb_CType_Int64 */
3, /* kUpb_CType_UInt64 */
UPB_SIZE(3, 4), /* kUpb_CType_String */
UPB_SIZE(3, 4), /* kUpb_CType_Bytes */
};
/** upb_Array *****************************************************************/
upb_Array* upb_Array_New(upb_Arena* a, upb_CType type) {
return _upb_Array_New(a, 4, _upb_CTypeo_sizelg2[type]);
}
size_t upb_Array_Size(const upb_Array* arr) { return arr->len; }
upb_MessageValue upb_Array_Get(const upb_Array* arr, size_t i) {
upb_MessageValue ret;
const char* data = _upb_array_constptr(arr);
int lg2 = arr->data & 7;
UPB_ASSERT(i < arr->len);
memcpy(&ret, data + (i << lg2), 1 << lg2);
return ret;
}
void upb_Array_Set(upb_Array* arr, size_t i, upb_MessageValue val) {
char* data = _upb_array_ptr(arr);
int lg2 = arr->data & 7;
UPB_ASSERT(i < arr->len);
memcpy(data + (i << lg2), &val, 1 << lg2);
}
bool upb_Array_Append(upb_Array* arr, upb_MessageValue val, upb_Arena* arena) {
if (!upb_Array_Resize(arr, arr->len + 1, arena)) {
return false;
}
upb_Array_Set(arr, arr->len - 1, val);
return true;
}
void upb_Array_Move(upb_Array* arr, size_t dst_idx, size_t src_idx,
size_t count) {
char* data = _upb_array_ptr(arr);
int lg2 = arr->data & 7;
memmove(&data[dst_idx << lg2], &data[src_idx << lg2], count << lg2);
}
bool upb_Array_Insert(upb_Array* arr, size_t i, size_t count,
upb_Arena* arena) {
UPB_ASSERT(i <= arr->len);
UPB_ASSERT(count + arr->len >= count);
size_t oldsize = arr->len;
if (!upb_Array_Resize(arr, arr->len + count, arena)) {
return false;
}
upb_Array_Move(arr, i + count, i, oldsize - i);
return true;
}
/*
* i end arr->len
* |------------|XXXXXXXX|--------|
*/
void upb_Array_Delete(upb_Array* arr, size_t i, size_t count) {
size_t end = i + count;
UPB_ASSERT(i <= end);
UPB_ASSERT(end <= arr->len);
upb_Array_Move(arr, i, end, arr->len - end);
arr->len -= count;
}
bool upb_Array_Resize(upb_Array* arr, size_t size, upb_Arena* arena) {
return _upb_Array_Resize(arr, size, arena);
}
/** upb_Map *******************************************************************/
upb_Map* upb_Map_New(upb_Arena* a, upb_CType key_type, upb_CType value_type) {
return _upb_Map_New(a, _upb_CTypeo_mapsize[key_type],
_upb_CTypeo_mapsize[value_type]);
}
size_t upb_Map_Size(const upb_Map* map) { return _upb_Map_Size(map); }
bool upb_Map_Get(const upb_Map* map, upb_MessageValue key,
upb_MessageValue* val) {
return _upb_Map_Get(map, &key, map->key_size, val, map->val_size);
}
void upb_Map_Clear(upb_Map* map) { _upb_Map_Clear(map); }
upb_MapInsertStatus upb_Map_Insert(upb_Map* map, upb_MessageValue key,
upb_MessageValue val, upb_Arena* arena) {
return (upb_MapInsertStatus)_upb_Map_Insert(map, &key, map->key_size, &val,
map->val_size, arena);
}
bool upb_Map_Delete(upb_Map* map, upb_MessageValue key) {
return _upb_Map_Delete(map, &key, map->key_size);
}
bool upb_MapIterator_Next(const upb_Map* map, size_t* iter) {
return _upb_map_next(map, iter);
}
bool upb_MapIterator_Done(const upb_Map* map, size_t iter) {
upb_strtable_iter i;
UPB_ASSERT(iter != kUpb_Map_Begin);
i.t = &map->table;
i.index = iter;
return upb_strtable_done(&i);
}
/* Returns the key and value for this entry of the map. */
upb_MessageValue upb_MapIterator_Key(const upb_Map* map, size_t iter) {
upb_strtable_iter i;
upb_MessageValue ret;
i.t = &map->table;
i.index = iter;
_upb_map_fromkey(upb_strtable_iter_key(&i), &ret, map->key_size);
return ret;
}
upb_MessageValue upb_MapIterator_Value(const upb_Map* map, size_t iter) {
upb_strtable_iter i;
upb_MessageValue ret;
i.t = &map->table;
i.index = iter;
_upb_map_fromvalue(upb_strtable_iter_value(&i), &ret, map->val_size);
return ret;
}
/* void upb_MapIterator_SetValue(upb_Map *map, size_t iter, upb_MessageValue
* value); */
/** bazel-out/k8-fastbuild/bin/external/com_google_protobuf/google/protobuf/descriptor.upb.c ************************************************************//* This file was generated by upbc (the upb compiler) from the input
* file:
*
* google/protobuf/descriptor.proto
*
* Do not edit -- your changes will be discarded when the file is
* regenerated. */
#include <stddef.h>
static const upb_MiniTable_Sub google_protobuf_FileDescriptorSet_submsgs[1] = {
{.submsg = &google_protobuf_FileDescriptorProto_msginit},
};
static const upb_MiniTable_Field google_protobuf_FileDescriptorSet__fields[1] = {
{1, UPB_SIZE(0, 0), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_FileDescriptorSet_msginit = {
&google_protobuf_FileDescriptorSet_submsgs[0],
&google_protobuf_FileDescriptorSet__fields[0],
UPB_SIZE(8, 8), 1, kUpb_ExtMode_NonExtendable, 1, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_FileDescriptorProto_submsgs[6] = {
{.submsg = &google_protobuf_DescriptorProto_msginit},
{.submsg = &google_protobuf_EnumDescriptorProto_msginit},
{.submsg = &google_protobuf_ServiceDescriptorProto_msginit},
{.submsg = &google_protobuf_FieldDescriptorProto_msginit},
{.submsg = &google_protobuf_FileOptions_msginit},
{.submsg = &google_protobuf_SourceCodeInfo_msginit},
};
static const upb_MiniTable_Field google_protobuf_FileDescriptorProto__fields[12] = {
{1, UPB_SIZE(4, 8), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(12, 24), UPB_SIZE(2, 2), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(20, 40), UPB_SIZE(0, 0), kUpb_NoSub, 12, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{4, UPB_SIZE(24, 48), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{5, UPB_SIZE(28, 56), UPB_SIZE(0, 0), 1, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{6, UPB_SIZE(32, 64), UPB_SIZE(0, 0), 2, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{7, UPB_SIZE(36, 72), UPB_SIZE(0, 0), 3, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{8, UPB_SIZE(40, 80), UPB_SIZE(3, 3), 4, 11, kUpb_FieldMode_Scalar | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{9, UPB_SIZE(44, 88), UPB_SIZE(4, 4), 5, 11, kUpb_FieldMode_Scalar | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{10, UPB_SIZE(48, 96), UPB_SIZE(0, 0), kUpb_NoSub, 5, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{11, UPB_SIZE(52, 104), UPB_SIZE(0, 0), kUpb_NoSub, 5, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{12, UPB_SIZE(56, 112), UPB_SIZE(5, 5), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_FileDescriptorProto_msginit = {
&google_protobuf_FileDescriptorProto_submsgs[0],
&google_protobuf_FileDescriptorProto__fields[0],
UPB_SIZE(64, 128), 12, kUpb_ExtMode_NonExtendable, 12, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_DescriptorProto_submsgs[8] = {
{.submsg = &google_protobuf_FieldDescriptorProto_msginit},
{.submsg = &google_protobuf_DescriptorProto_msginit},
{.submsg = &google_protobuf_EnumDescriptorProto_msginit},
{.submsg = &google_protobuf_DescriptorProto_ExtensionRange_msginit},
{.submsg = &google_protobuf_FieldDescriptorProto_msginit},
{.submsg = &google_protobuf_MessageOptions_msginit},
{.submsg = &google_protobuf_OneofDescriptorProto_msginit},
{.submsg = &google_protobuf_DescriptorProto_ReservedRange_msginit},
};
static const upb_MiniTable_Field google_protobuf_DescriptorProto__fields[10] = {
{1, UPB_SIZE(4, 8), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(12, 24), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(16, 32), UPB_SIZE(0, 0), 1, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{4, UPB_SIZE(20, 40), UPB_SIZE(0, 0), 2, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{5, UPB_SIZE(24, 48), UPB_SIZE(0, 0), 3, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{6, UPB_SIZE(28, 56), UPB_SIZE(0, 0), 4, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{7, UPB_SIZE(32, 64), UPB_SIZE(2, 2), 5, 11, kUpb_FieldMode_Scalar | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{8, UPB_SIZE(36, 72), UPB_SIZE(0, 0), 6, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{9, UPB_SIZE(40, 80), UPB_SIZE(0, 0), 7, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{10, UPB_SIZE(44, 88), UPB_SIZE(0, 0), kUpb_NoSub, 12, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_DescriptorProto_msginit = {
&google_protobuf_DescriptorProto_submsgs[0],
&google_protobuf_DescriptorProto__fields[0],
UPB_SIZE(48, 96), 10, kUpb_ExtMode_NonExtendable, 10, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_DescriptorProto_ExtensionRange_submsgs[1] = {
{.submsg = &google_protobuf_ExtensionRangeOptions_msginit},
};
static const upb_MiniTable_Field google_protobuf_DescriptorProto_ExtensionRange__fields[3] = {
{1, UPB_SIZE(4, 4), UPB_SIZE(1, 1), kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(8, 8), UPB_SIZE(2, 2), kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(12, 16), UPB_SIZE(3, 3), 0, 11, kUpb_FieldMode_Scalar | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_DescriptorProto_ExtensionRange_msginit = {
&google_protobuf_DescriptorProto_ExtensionRange_submsgs[0],
&google_protobuf_DescriptorProto_ExtensionRange__fields[0],
UPB_SIZE(16, 24), 3, kUpb_ExtMode_NonExtendable, 3, 255, 0,
};
static const upb_MiniTable_Field google_protobuf_DescriptorProto_ReservedRange__fields[2] = {
{1, UPB_SIZE(4, 4), UPB_SIZE(1, 1), kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(8, 8), UPB_SIZE(2, 2), kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_DescriptorProto_ReservedRange_msginit = {
NULL,
&google_protobuf_DescriptorProto_ReservedRange__fields[0],
UPB_SIZE(16, 16), 2, kUpb_ExtMode_NonExtendable, 2, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_ExtensionRangeOptions_submsgs[1] = {
{.submsg = &google_protobuf_UninterpretedOption_msginit},
};
static const upb_MiniTable_Field google_protobuf_ExtensionRangeOptions__fields[1] = {
{999, UPB_SIZE(0, 0), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_ExtensionRangeOptions_msginit = {
&google_protobuf_ExtensionRangeOptions_submsgs[0],
&google_protobuf_ExtensionRangeOptions__fields[0],
UPB_SIZE(8, 8), 1, kUpb_ExtMode_Extendable, 0, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_FieldDescriptorProto_submsgs[3] = {
{.subenum = &google_protobuf_FieldDescriptorProto_Label_enuminit},
{.subenum = &google_protobuf_FieldDescriptorProto_Type_enuminit},
{.submsg = &google_protobuf_FieldOptions_msginit},
};
static const upb_MiniTable_Field google_protobuf_FieldDescriptorProto__fields[11] = {
{1, UPB_SIZE(24, 24), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(32, 40), UPB_SIZE(2, 2), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(4, 4), UPB_SIZE(3, 3), kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{4, UPB_SIZE(8, 8), UPB_SIZE(4, 4), 0, 14, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{5, UPB_SIZE(12, 12), UPB_SIZE(5, 5), 1, 14, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{6, UPB_SIZE(40, 56), UPB_SIZE(6, 6), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{7, UPB_SIZE(48, 72), UPB_SIZE(7, 7), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{8, UPB_SIZE(56, 88), UPB_SIZE(8, 8), 2, 11, kUpb_FieldMode_Scalar | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{9, UPB_SIZE(16, 16), UPB_SIZE(9, 9), kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{10, UPB_SIZE(60, 96), UPB_SIZE(10, 10), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{17, UPB_SIZE(20, 20), UPB_SIZE(11, 11), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_FieldDescriptorProto_msginit = {
&google_protobuf_FieldDescriptorProto_submsgs[0],
&google_protobuf_FieldDescriptorProto__fields[0],
UPB_SIZE(72, 112), 11, kUpb_ExtMode_NonExtendable, 10, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_OneofDescriptorProto_submsgs[1] = {
{.submsg = &google_protobuf_OneofOptions_msginit},
};
static const upb_MiniTable_Field google_protobuf_OneofDescriptorProto__fields[2] = {
{1, UPB_SIZE(4, 8), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(12, 24), UPB_SIZE(2, 2), 0, 11, kUpb_FieldMode_Scalar | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_OneofDescriptorProto_msginit = {
&google_protobuf_OneofDescriptorProto_submsgs[0],
&google_protobuf_OneofDescriptorProto__fields[0],
UPB_SIZE(16, 32), 2, kUpb_ExtMode_NonExtendable, 2, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_EnumDescriptorProto_submsgs[3] = {
{.submsg = &google_protobuf_EnumValueDescriptorProto_msginit},
{.submsg = &google_protobuf_EnumOptions_msginit},
{.submsg = &google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit},
};
static const upb_MiniTable_Field google_protobuf_EnumDescriptorProto__fields[5] = {
{1, UPB_SIZE(4, 8), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(12, 24), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(16, 32), UPB_SIZE(2, 2), 1, 11, kUpb_FieldMode_Scalar | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{4, UPB_SIZE(20, 40), UPB_SIZE(0, 0), 2, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{5, UPB_SIZE(24, 48), UPB_SIZE(0, 0), kUpb_NoSub, 12, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_EnumDescriptorProto_msginit = {
&google_protobuf_EnumDescriptorProto_submsgs[0],
&google_protobuf_EnumDescriptorProto__fields[0],
UPB_SIZE(32, 56), 5, kUpb_ExtMode_NonExtendable, 5, 255, 0,
};
static const upb_MiniTable_Field google_protobuf_EnumDescriptorProto_EnumReservedRange__fields[2] = {
{1, UPB_SIZE(4, 4), UPB_SIZE(1, 1), kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(8, 8), UPB_SIZE(2, 2), kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit = {
NULL,
&google_protobuf_EnumDescriptorProto_EnumReservedRange__fields[0],
UPB_SIZE(16, 16), 2, kUpb_ExtMode_NonExtendable, 2, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_EnumValueDescriptorProto_submsgs[1] = {
{.submsg = &google_protobuf_EnumValueOptions_msginit},
};
static const upb_MiniTable_Field google_protobuf_EnumValueDescriptorProto__fields[3] = {
{1, UPB_SIZE(8, 8), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(4, 4), UPB_SIZE(2, 2), kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(16, 24), UPB_SIZE(3, 3), 0, 11, kUpb_FieldMode_Scalar | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_EnumValueDescriptorProto_msginit = {
&google_protobuf_EnumValueDescriptorProto_submsgs[0],
&google_protobuf_EnumValueDescriptorProto__fields[0],
UPB_SIZE(24, 32), 3, kUpb_ExtMode_NonExtendable, 3, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_ServiceDescriptorProto_submsgs[2] = {
{.submsg = &google_protobuf_MethodDescriptorProto_msginit},
{.submsg = &google_protobuf_ServiceOptions_msginit},
};
static const upb_MiniTable_Field google_protobuf_ServiceDescriptorProto__fields[3] = {
{1, UPB_SIZE(4, 8), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(12, 24), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(16, 32), UPB_SIZE(2, 2), 1, 11, kUpb_FieldMode_Scalar | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_ServiceDescriptorProto_msginit = {
&google_protobuf_ServiceDescriptorProto_submsgs[0],
&google_protobuf_ServiceDescriptorProto__fields[0],
UPB_SIZE(24, 40), 3, kUpb_ExtMode_NonExtendable, 3, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_MethodDescriptorProto_submsgs[1] = {
{.submsg = &google_protobuf_MethodOptions_msginit},
};
static const upb_MiniTable_Field google_protobuf_MethodDescriptorProto__fields[6] = {
{1, UPB_SIZE(4, 8), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(12, 24), UPB_SIZE(2, 2), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(20, 40), UPB_SIZE(3, 3), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{4, UPB_SIZE(28, 56), UPB_SIZE(4, 4), 0, 11, kUpb_FieldMode_Scalar | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{5, UPB_SIZE(1, 1), UPB_SIZE(5, 5), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{6, UPB_SIZE(2, 2), UPB_SIZE(6, 6), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_MethodDescriptorProto_msginit = {
&google_protobuf_MethodDescriptorProto_submsgs[0],
&google_protobuf_MethodDescriptorProto__fields[0],
UPB_SIZE(32, 64), 6, kUpb_ExtMode_NonExtendable, 6, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_FileOptions_submsgs[2] = {
{.subenum = &google_protobuf_FileOptions_OptimizeMode_enuminit},
{.submsg = &google_protobuf_UninterpretedOption_msginit},
};
static const upb_MiniTable_Field google_protobuf_FileOptions__fields[21] = {
{1, UPB_SIZE(20, 24), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{8, UPB_SIZE(28, 40), UPB_SIZE(2, 2), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{9, UPB_SIZE(4, 4), UPB_SIZE(3, 3), 0, 14, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{10, UPB_SIZE(8, 8), UPB_SIZE(4, 4), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{11, UPB_SIZE(36, 56), UPB_SIZE(5, 5), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{16, UPB_SIZE(9, 9), UPB_SIZE(6, 6), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{17, UPB_SIZE(10, 10), UPB_SIZE(7, 7), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{18, UPB_SIZE(11, 11), UPB_SIZE(8, 8), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{20, UPB_SIZE(12, 12), UPB_SIZE(9, 9), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{23, UPB_SIZE(13, 13), UPB_SIZE(10, 10), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{27, UPB_SIZE(14, 14), UPB_SIZE(11, 11), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{31, UPB_SIZE(15, 15), UPB_SIZE(12, 12), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{36, UPB_SIZE(44, 72), UPB_SIZE(13, 13), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{37, UPB_SIZE(52, 88), UPB_SIZE(14, 14), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{39, UPB_SIZE(60, 104), UPB_SIZE(15, 15), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{40, UPB_SIZE(68, 120), UPB_SIZE(16, 16), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{41, UPB_SIZE(76, 136), UPB_SIZE(17, 17), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{42, UPB_SIZE(16, 16), UPB_SIZE(18, 18), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{44, UPB_SIZE(84, 152), UPB_SIZE(19, 19), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{45, UPB_SIZE(92, 168), UPB_SIZE(20, 20), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{999, UPB_SIZE(100, 184), UPB_SIZE(0, 0), 1, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_FileOptions_msginit = {
&google_protobuf_FileOptions_submsgs[0],
&google_protobuf_FileOptions__fields[0],
UPB_SIZE(104, 192), 21, kUpb_ExtMode_Extendable, 1, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_MessageOptions_submsgs[1] = {
{.submsg = &google_protobuf_UninterpretedOption_msginit},
};
static const upb_MiniTable_Field google_protobuf_MessageOptions__fields[5] = {
{1, UPB_SIZE(1, 1), UPB_SIZE(1, 1), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(2, 2), UPB_SIZE(2, 2), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(3, 3), UPB_SIZE(3, 3), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{7, UPB_SIZE(4, 4), UPB_SIZE(4, 4), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{999, UPB_SIZE(8, 8), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_MessageOptions_msginit = {
&google_protobuf_MessageOptions_submsgs[0],
&google_protobuf_MessageOptions__fields[0],
UPB_SIZE(16, 16), 5, kUpb_ExtMode_Extendable, 3, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_FieldOptions_submsgs[3] = {
{.subenum = &google_protobuf_FieldOptions_CType_enuminit},
{.subenum = &google_protobuf_FieldOptions_JSType_enuminit},
{.submsg = &google_protobuf_UninterpretedOption_msginit},
};
static const upb_MiniTable_Field google_protobuf_FieldOptions__fields[8] = {
{1, UPB_SIZE(4, 4), UPB_SIZE(1, 1), 0, 14, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(8, 8), UPB_SIZE(2, 2), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(9, 9), UPB_SIZE(3, 3), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{5, UPB_SIZE(10, 10), UPB_SIZE(4, 4), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{6, UPB_SIZE(12, 12), UPB_SIZE(5, 5), 1, 14, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{10, UPB_SIZE(16, 16), UPB_SIZE(6, 6), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{15, UPB_SIZE(17, 17), UPB_SIZE(7, 7), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{999, UPB_SIZE(20, 24), UPB_SIZE(0, 0), 2, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_FieldOptions_msginit = {
&google_protobuf_FieldOptions_submsgs[0],
&google_protobuf_FieldOptions__fields[0],
UPB_SIZE(24, 32), 8, kUpb_ExtMode_Extendable, 3, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_OneofOptions_submsgs[1] = {
{.submsg = &google_protobuf_UninterpretedOption_msginit},
};
static const upb_MiniTable_Field google_protobuf_OneofOptions__fields[1] = {
{999, UPB_SIZE(0, 0), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_OneofOptions_msginit = {
&google_protobuf_OneofOptions_submsgs[0],
&google_protobuf_OneofOptions__fields[0],
UPB_SIZE(8, 8), 1, kUpb_ExtMode_Extendable, 0, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_EnumOptions_submsgs[1] = {
{.submsg = &google_protobuf_UninterpretedOption_msginit},
};
static const upb_MiniTable_Field google_protobuf_EnumOptions__fields[3] = {
{2, UPB_SIZE(1, 1), UPB_SIZE(1, 1), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(2, 2), UPB_SIZE(2, 2), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{999, UPB_SIZE(4, 8), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_EnumOptions_msginit = {
&google_protobuf_EnumOptions_submsgs[0],
&google_protobuf_EnumOptions__fields[0],
UPB_SIZE(8, 16), 3, kUpb_ExtMode_Extendable, 0, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_EnumValueOptions_submsgs[1] = {
{.submsg = &google_protobuf_UninterpretedOption_msginit},
};
static const upb_MiniTable_Field google_protobuf_EnumValueOptions__fields[2] = {
{1, UPB_SIZE(1, 1), UPB_SIZE(1, 1), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{999, UPB_SIZE(4, 8), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_EnumValueOptions_msginit = {
&google_protobuf_EnumValueOptions_submsgs[0],
&google_protobuf_EnumValueOptions__fields[0],
UPB_SIZE(8, 16), 2, kUpb_ExtMode_Extendable, 1, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_ServiceOptions_submsgs[1] = {
{.submsg = &google_protobuf_UninterpretedOption_msginit},
};
static const upb_MiniTable_Field google_protobuf_ServiceOptions__fields[2] = {
{33, UPB_SIZE(1, 1), UPB_SIZE(1, 1), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{999, UPB_SIZE(4, 8), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_ServiceOptions_msginit = {
&google_protobuf_ServiceOptions_submsgs[0],
&google_protobuf_ServiceOptions__fields[0],
UPB_SIZE(8, 16), 2, kUpb_ExtMode_Extendable, 0, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_MethodOptions_submsgs[2] = {
{.subenum = &google_protobuf_MethodOptions_IdempotencyLevel_enuminit},
{.submsg = &google_protobuf_UninterpretedOption_msginit},
};
static const upb_MiniTable_Field google_protobuf_MethodOptions__fields[3] = {
{33, UPB_SIZE(1, 1), UPB_SIZE(1, 1), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
{34, UPB_SIZE(4, 4), UPB_SIZE(2, 2), 0, 14, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{999, UPB_SIZE(8, 8), UPB_SIZE(0, 0), 1, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_MethodOptions_msginit = {
&google_protobuf_MethodOptions_submsgs[0],
&google_protobuf_MethodOptions__fields[0],
UPB_SIZE(16, 16), 3, kUpb_ExtMode_Extendable, 0, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_UninterpretedOption_submsgs[1] = {
{.submsg = &google_protobuf_UninterpretedOption_NamePart_msginit},
};
static const upb_MiniTable_Field google_protobuf_UninterpretedOption__fields[7] = {
{2, UPB_SIZE(4, 8), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(8, 16), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{4, UPB_SIZE(32, 64), UPB_SIZE(2, 2), kUpb_NoSub, 4, kUpb_FieldMode_Scalar | (kUpb_FieldRep_8Byte << kUpb_FieldRep_Shift)},
{5, UPB_SIZE(40, 72), UPB_SIZE(3, 3), kUpb_NoSub, 3, kUpb_FieldMode_Scalar | (kUpb_FieldRep_8Byte << kUpb_FieldRep_Shift)},
{6, UPB_SIZE(48, 80), UPB_SIZE(4, 4), kUpb_NoSub, 1, kUpb_FieldMode_Scalar | (kUpb_FieldRep_8Byte << kUpb_FieldRep_Shift)},
{7, UPB_SIZE(16, 32), UPB_SIZE(5, 5), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{8, UPB_SIZE(24, 48), UPB_SIZE(6, 6), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_UninterpretedOption_msginit = {
&google_protobuf_UninterpretedOption_submsgs[0],
&google_protobuf_UninterpretedOption__fields[0],
UPB_SIZE(56, 88), 7, kUpb_ExtMode_NonExtendable, 0, 255, 0,
};
static const upb_MiniTable_Field google_protobuf_UninterpretedOption_NamePart__fields[2] = {
{1, UPB_SIZE(4, 8), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(1, 1), UPB_SIZE(2, 2), kUpb_NoSub, 8, kUpb_FieldMode_Scalar | (kUpb_FieldRep_1Byte << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_UninterpretedOption_NamePart_msginit = {
NULL,
&google_protobuf_UninterpretedOption_NamePart__fields[0],
UPB_SIZE(16, 24), 2, kUpb_ExtMode_NonExtendable, 2, 255, 2,
};
static const upb_MiniTable_Sub google_protobuf_SourceCodeInfo_submsgs[1] = {
{.submsg = &google_protobuf_SourceCodeInfo_Location_msginit},
};
static const upb_MiniTable_Field google_protobuf_SourceCodeInfo__fields[1] = {
{1, UPB_SIZE(0, 0), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_SourceCodeInfo_msginit = {
&google_protobuf_SourceCodeInfo_submsgs[0],
&google_protobuf_SourceCodeInfo__fields[0],
UPB_SIZE(8, 8), 1, kUpb_ExtMode_NonExtendable, 1, 255, 0,
};
static const upb_MiniTable_Field google_protobuf_SourceCodeInfo_Location__fields[5] = {
{1, UPB_SIZE(4, 8), UPB_SIZE(0, 0), kUpb_NoSub, 5, kUpb_FieldMode_Array | kUpb_LabelFlags_IsPacked | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(8, 16), UPB_SIZE(0, 0), kUpb_NoSub, 5, kUpb_FieldMode_Array | kUpb_LabelFlags_IsPacked | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(12, 24), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{4, UPB_SIZE(20, 40), UPB_SIZE(2, 2), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{6, UPB_SIZE(28, 56), UPB_SIZE(0, 0), kUpb_NoSub, 12, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_SourceCodeInfo_Location_msginit = {
NULL,
&google_protobuf_SourceCodeInfo_Location__fields[0],
UPB_SIZE(32, 64), 5, kUpb_ExtMode_NonExtendable, 4, 255, 0,
};
static const upb_MiniTable_Sub google_protobuf_GeneratedCodeInfo_submsgs[1] = {
{.submsg = &google_protobuf_GeneratedCodeInfo_Annotation_msginit},
};
static const upb_MiniTable_Field google_protobuf_GeneratedCodeInfo__fields[1] = {
{1, UPB_SIZE(0, 0), UPB_SIZE(0, 0), 0, 11, kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_GeneratedCodeInfo_msginit = {
&google_protobuf_GeneratedCodeInfo_submsgs[0],
&google_protobuf_GeneratedCodeInfo__fields[0],
UPB_SIZE(8, 8), 1, kUpb_ExtMode_NonExtendable, 1, 255, 0,
};
static const upb_MiniTable_Field google_protobuf_GeneratedCodeInfo_Annotation__fields[4] = {
{1, UPB_SIZE(12, 16), UPB_SIZE(0, 0), kUpb_NoSub, 5, kUpb_FieldMode_Array | kUpb_LabelFlags_IsPacked | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift)},
{2, UPB_SIZE(16, 24), UPB_SIZE(1, 1), kUpb_NoSub, 12, kUpb_FieldMode_Scalar | (kUpb_FieldRep_StringView << kUpb_FieldRep_Shift)},
{3, UPB_SIZE(4, 4), UPB_SIZE(2, 2), kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
{4, UPB_SIZE(8, 8), UPB_SIZE(3, 3), kUpb_NoSub, 5, kUpb_FieldMode_Scalar | (kUpb_FieldRep_4Byte << kUpb_FieldRep_Shift)},
};
const upb_MiniTable google_protobuf_GeneratedCodeInfo_Annotation_msginit = {
NULL,
&google_protobuf_GeneratedCodeInfo_Annotation__fields[0],
UPB_SIZE(24, 40), 4, kUpb_ExtMode_NonExtendable, 4, 255, 0,
};
static const upb_MiniTable *messages_layout[27] = {
&google_protobuf_FileDescriptorSet_msginit,
&google_protobuf_FileDescriptorProto_msginit,
&google_protobuf_DescriptorProto_msginit,
&google_protobuf_DescriptorProto_ExtensionRange_msginit,
&google_protobuf_DescriptorProto_ReservedRange_msginit,
&google_protobuf_ExtensionRangeOptions_msginit,
&google_protobuf_FieldDescriptorProto_msginit,
&google_protobuf_OneofDescriptorProto_msginit,
&google_protobuf_EnumDescriptorProto_msginit,
&google_protobuf_EnumDescriptorProto_EnumReservedRange_msginit,
&google_protobuf_EnumValueDescriptorProto_msginit,
&google_protobuf_ServiceDescriptorProto_msginit,
&google_protobuf_MethodDescriptorProto_msginit,
&google_protobuf_FileOptions_msginit,
&google_protobuf_MessageOptions_msginit,
&google_protobuf_FieldOptions_msginit,
&google_protobuf_OneofOptions_msginit,
&google_protobuf_EnumOptions_msginit,
&google_protobuf_EnumValueOptions_msginit,
&google_protobuf_ServiceOptions_msginit,
&google_protobuf_MethodOptions_msginit,
&google_protobuf_UninterpretedOption_msginit,
&google_protobuf_UninterpretedOption_NamePart_msginit,
&google_protobuf_SourceCodeInfo_msginit,
&google_protobuf_SourceCodeInfo_Location_msginit,
&google_protobuf_GeneratedCodeInfo_msginit,
&google_protobuf_GeneratedCodeInfo_Annotation_msginit,
};
const upb_MiniTable_Enum google_protobuf_FieldDescriptorProto_Type_enuminit = {
NULL,
0x7fffeULL,
0,
};
const upb_MiniTable_Enum google_protobuf_FieldDescriptorProto_Label_enuminit = {
NULL,
0xeULL,
0,
};
const upb_MiniTable_Enum google_protobuf_FileOptions_OptimizeMode_enuminit = {
NULL,
0xeULL,
0,
};
const upb_MiniTable_Enum google_protobuf_FieldOptions_CType_enuminit = {
NULL,
0x7ULL,
0,
};
const upb_MiniTable_Enum google_protobuf_FieldOptions_JSType_enuminit = {
NULL,
0x7ULL,
0,
};
const upb_MiniTable_Enum google_protobuf_MethodOptions_IdempotencyLevel_enuminit = {
NULL,
0x7ULL,
0,
};
static const upb_MiniTable_Enum *enums_layout[6] = {
&google_protobuf_FieldDescriptorProto_Type_enuminit,
&google_protobuf_FieldDescriptorProto_Label_enuminit,
&google_protobuf_FileOptions_OptimizeMode_enuminit,
&google_protobuf_FieldOptions_CType_enuminit,
&google_protobuf_FieldOptions_JSType_enuminit,
&google_protobuf_MethodOptions_IdempotencyLevel_enuminit,
};
const upb_MiniTable_File google_protobuf_descriptor_proto_upb_file_layout = {
messages_layout,
enums_layout,
NULL,
27,
6,
0,
};
/** upb/decode_fast.c ************************************************************/
// Fast decoder: ~3x the speed of decode.c, but requires x86-64/ARM64.
// Also the table size grows by 2x.
//
// Could potentially be ported to other 64-bit archs that pass at least six
// arguments in registers and have 8 unused high bits in pointers.
//
// The overall design is to create specialized functions for every possible
// field type (eg. oneof boolean field with a 1 byte tag) and then dispatch
// to the specialized function as quickly as possible.
/* Must be last. */
#if UPB_FASTTABLE
// The standard set of arguments passed to each parsing function.
// Thanks to x86-64 calling conventions, these will stay in registers.
#define UPB_PARSE_PARAMS \
upb_Decoder *d, const char *ptr, upb_Message *msg, intptr_t table, \
uint64_t hasbits, uint64_t data
#define UPB_PARSE_ARGS d, ptr, msg, table, hasbits, data
#define RETURN_GENERIC(m) \
/* Uncomment either of these for debugging purposes. */ \
/* fprintf(stderr, m); */ \
/*__builtin_trap(); */ \
return fastdecode_generic(d, ptr, msg, table, hasbits, 0);
typedef enum {
CARD_s = 0, /* Singular (optional, non-repeated) */
CARD_o = 1, /* Oneof */
CARD_r = 2, /* Repeated */
CARD_p = 3 /* Packed Repeated */
} upb_card;
UPB_NOINLINE
static const char* fastdecode_isdonefallback(UPB_PARSE_PARAMS) {
int overrun = data;
int status;
ptr = decode_isdonefallback_inl(d, ptr, overrun, &status);
if (ptr == NULL) {
return fastdecode_err(d, status);
}
data = fastdecode_loadtag(ptr);
UPB_MUSTTAIL return fastdecode_tagdispatch(UPB_PARSE_ARGS);
}
UPB_FORCEINLINE
static const char* fastdecode_dispatch(UPB_PARSE_PARAMS) {
if (UPB_UNLIKELY(ptr >= d->limit_ptr)) {
int overrun = ptr - d->end;
if (UPB_LIKELY(overrun == d->limit)) {
// Parse is finished.
*(uint32_t*)msg |= hasbits; // Sync hasbits.
const upb_MiniTable* l = decode_totablep(table);
return UPB_UNLIKELY(l->required_count)
? decode_checkrequired(d, ptr, msg, l)
: ptr;
} else {
data = overrun;
UPB_MUSTTAIL return fastdecode_isdonefallback(UPB_PARSE_ARGS);
}
}
// Read two bytes of tag data (for a one-byte tag, the high byte is junk).
data = fastdecode_loadtag(ptr);
UPB_MUSTTAIL return fastdecode_tagdispatch(UPB_PARSE_ARGS);
}
UPB_FORCEINLINE
static bool fastdecode_checktag(uint16_t data, int tagbytes) {
if (tagbytes == 1) {
return (data & 0xff) == 0;
} else {
return data == 0;
}
}
UPB_FORCEINLINE
static const char* fastdecode_longsize(const char* ptr, int* size) {
int i;
UPB_ASSERT(*size & 0x80);
*size &= 0xff;
for (i = 0; i < 3; i++) {
ptr++;
size_t byte = (uint8_t)ptr[-1];
*size += (byte - 1) << (7 + 7 * i);
if (UPB_LIKELY((byte & 0x80) == 0)) return ptr;
}
ptr++;
size_t byte = (uint8_t)ptr[-1];
// len is limited by 2gb not 4gb, hence 8 and not 16 as normally expected
// for a 32 bit varint.
if (UPB_UNLIKELY(byte >= 8)) return NULL;
*size += (byte - 1) << 28;
return ptr;
}
UPB_FORCEINLINE
static bool fastdecode_boundscheck(const char* ptr, size_t len,
const char* end) {
uintptr_t uptr = (uintptr_t)ptr;
uintptr_t uend = (uintptr_t)end + 16;
uintptr_t res = uptr + len;
return res < uptr || res > uend;
}
UPB_FORCEINLINE
static bool fastdecode_boundscheck2(const char* ptr, size_t len,
const char* end) {
// This is one extra branch compared to the more normal:
// return (size_t)(end - ptr) < size;
// However it is one less computation if we are just about to use "ptr + len":
// https://godbolt.org/z/35YGPz
// In microbenchmarks this shows an overall 4% improvement.
uintptr_t uptr = (uintptr_t)ptr;
uintptr_t uend = (uintptr_t)end;
uintptr_t res = uptr + len;
return res < uptr || res > uend;
}
typedef const char* fastdecode_delimfunc(upb_Decoder* d, const char* ptr,
void* ctx);
UPB_FORCEINLINE
static const char* fastdecode_delimited(upb_Decoder* d, const char* ptr,
fastdecode_delimfunc* func, void* ctx) {
ptr++;
int len = (int8_t)ptr[-1];
if (fastdecode_boundscheck2(ptr, len, d->limit_ptr)) {
// Slow case: Sub-message is >=128 bytes and/or exceeds the current buffer.
// If it exceeds the buffer limit, limit/limit_ptr will change during
// sub-message parsing, so we need to preserve delta, not limit.
if (UPB_UNLIKELY(len & 0x80)) {
// Size varint >1 byte (length >= 128).
ptr = fastdecode_longsize(ptr, &len);
if (!ptr) {
// Corrupt wire format: size exceeded INT_MAX.
return NULL;
}
}
if (ptr - d->end + (int)len > d->limit) {
// Corrupt wire format: invalid limit.
return NULL;
}
int delta = decode_pushlimit(d, ptr, len);
ptr = func(d, ptr, ctx);
decode_poplimit(d, ptr, delta);
} else {
// Fast case: Sub-message is <128 bytes and fits in the current buffer.
// This means we can preserve limit/limit_ptr verbatim.
const char* saved_limit_ptr = d->limit_ptr;
int saved_limit = d->limit;
d->limit_ptr = ptr + len;
d->limit = d->limit_ptr - d->end;
UPB_ASSERT(d->limit_ptr == d->end + UPB_MIN(0, d->limit));
ptr = func(d, ptr, ctx);
d->limit_ptr = saved_limit_ptr;
d->limit = saved_limit;
UPB_ASSERT(d->limit_ptr == d->end + UPB_MIN(0, d->limit));
}
return ptr;
}
/* singular, oneof, repeated field handling ***********************************/
typedef struct {
upb_Array* arr;
void* end;
} fastdecode_arr;
typedef enum {
FD_NEXT_ATLIMIT,
FD_NEXT_SAMEFIELD,
FD_NEXT_OTHERFIELD
} fastdecode_next;
typedef struct {
void* dst;
fastdecode_next next;
uint32_t tag;
} fastdecode_nextret;
UPB_FORCEINLINE
static void* fastdecode_resizearr(upb_Decoder* d, void* dst,
fastdecode_arr* farr, int valbytes) {
if (UPB_UNLIKELY(dst == farr->end)) {
size_t old_size = farr->arr->size;
size_t old_bytes = old_size * valbytes;
size_t new_size = old_size * 2;
size_t new_bytes = new_size * valbytes;
char* old_ptr = _upb_array_ptr(farr->arr);
char* new_ptr = upb_Arena_Realloc(&d->arena, old_ptr, old_bytes, new_bytes);
uint8_t elem_size_lg2 = __builtin_ctz(valbytes);
farr->arr->size = new_size;
farr->arr->data = _upb_array_tagptr(new_ptr, elem_size_lg2);
dst = (void*)(new_ptr + (old_size * valbytes));
farr->end = (void*)(new_ptr + (new_size * valbytes));
}
return dst;
}
UPB_FORCEINLINE
static bool fastdecode_tagmatch(uint32_t tag, uint64_t data, int tagbytes) {
if (tagbytes == 1) {
return (uint8_t)tag == (uint8_t)data;
} else {
return (uint16_t)tag == (uint16_t)data;
}
}
UPB_FORCEINLINE
static void fastdecode_commitarr(void* dst, fastdecode_arr* farr,
int valbytes) {
farr->arr->len =
(size_t)((char*)dst - (char*)_upb_array_ptr(farr->arr)) / valbytes;
}
UPB_FORCEINLINE
static fastdecode_nextret fastdecode_nextrepeated(upb_Decoder* d, void* dst,
const char** ptr,
fastdecode_arr* farr,
uint64_t data, int tagbytes,
int valbytes) {
fastdecode_nextret ret;
dst = (char*)dst + valbytes;
if (UPB_LIKELY(!decode_isdone(d, ptr))) {
ret.tag = fastdecode_loadtag(*ptr);
if (fastdecode_tagmatch(ret.tag, data, tagbytes)) {
ret.next = FD_NEXT_SAMEFIELD;
} else {
fastdecode_commitarr(dst, farr, valbytes);
ret.next = FD_NEXT_OTHERFIELD;
}
} else {
fastdecode_commitarr(dst, farr, valbytes);
ret.next = FD_NEXT_ATLIMIT;
}
ret.dst = dst;
return ret;
}
UPB_FORCEINLINE
static void* fastdecode_fieldmem(upb_Message* msg, uint64_t data) {
size_t ofs = data >> 48;
return (char*)msg + ofs;
}
UPB_FORCEINLINE
static void* fastdecode_getfield(upb_Decoder* d, const char* ptr,
upb_Message* msg, uint64_t* data,
uint64_t* hasbits, fastdecode_arr* farr,
int valbytes, upb_card card) {
switch (card) {
case CARD_s: {
uint8_t hasbit_index = *data >> 24;
// Set hasbit and return pointer to scalar field.
*hasbits |= 1ull << hasbit_index;
return fastdecode_fieldmem(msg, *data);
}
case CARD_o: {
uint16_t case_ofs = *data >> 32;
uint32_t* oneof_case = UPB_PTR_AT(msg, case_ofs, uint32_t);
uint8_t field_number = *data >> 24;
*oneof_case = field_number;
return fastdecode_fieldmem(msg, *data);
}
case CARD_r: {
// Get pointer to upb_Array and allocate/expand if necessary.
uint8_t elem_size_lg2 = __builtin_ctz(valbytes);
upb_Array** arr_p = fastdecode_fieldmem(msg, *data);
char* begin;
*(uint32_t*)msg |= *hasbits;
*hasbits = 0;
if (UPB_LIKELY(!*arr_p)) {
farr->arr = _upb_Array_New(&d->arena, 8, elem_size_lg2);
*arr_p = farr->arr;
} else {
farr->arr = *arr_p;
}
begin = _upb_array_ptr(farr->arr);
farr->end = begin + (farr->arr->size * valbytes);
*data = fastdecode_loadtag(ptr);
return begin + (farr->arr->len * valbytes);
}
default:
UPB_UNREACHABLE();
}
}
UPB_FORCEINLINE
static bool fastdecode_flippacked(uint64_t* data, int tagbytes) {
*data ^= (0x2 ^ 0x0); // Patch data to match packed wiretype.
return fastdecode_checktag(*data, tagbytes);
}
#define FASTDECODE_CHECKPACKED(tagbytes, card, func) \
if (UPB_UNLIKELY(!fastdecode_checktag(data, tagbytes))) { \
if (card == CARD_r && fastdecode_flippacked(&data, tagbytes)) { \
UPB_MUSTTAIL return func(UPB_PARSE_ARGS); \
} \
RETURN_GENERIC("packed check tag mismatch\n"); \
}
/* varint fields **************************************************************/
UPB_FORCEINLINE
static uint64_t fastdecode_munge(uint64_t val, int valbytes, bool zigzag) {
if (valbytes == 1) {
return val != 0;
} else if (zigzag) {
if (valbytes == 4) {
uint32_t n = val;
return (n >> 1) ^ -(int32_t)(n & 1);
} else if (valbytes == 8) {
return (val >> 1) ^ -(int64_t)(val & 1);
}
UPB_UNREACHABLE();
}
return val;
}
UPB_FORCEINLINE
static const char* fastdecode_varint64(const char* ptr, uint64_t* val) {
ptr++;
*val = (uint8_t)ptr[-1];
if (UPB_UNLIKELY(*val & 0x80)) {
int i;
for (i = 0; i < 8; i++) {
ptr++;
uint64_t byte = (uint8_t)ptr[-1];
*val += (byte - 1) << (7 + 7 * i);
if (UPB_LIKELY((byte & 0x80) == 0)) goto done;
}
ptr++;
uint64_t byte = (uint8_t)ptr[-1];
if (byte > 1) {
return NULL;
}
*val += (byte - 1) << 63;
}
done:
UPB_ASSUME(ptr != NULL);
return ptr;
}
#define FASTDECODE_UNPACKEDVARINT(d, ptr, msg, table, hasbits, data, tagbytes, \
valbytes, card, zigzag, packed) \
uint64_t val; \
void* dst; \
fastdecode_arr farr; \
\
FASTDECODE_CHECKPACKED(tagbytes, card, packed); \
\
dst = fastdecode_getfield(d, ptr, msg, &data, &hasbits, &farr, valbytes, \
card); \
if (card == CARD_r) { \
if (UPB_UNLIKELY(!dst)) { \
RETURN_GENERIC("need array resize\n"); \
} \
} \
\
again: \
if (card == CARD_r) { \
dst = fastdecode_resizearr(d, dst, &farr, valbytes); \
} \
\
ptr += tagbytes; \
ptr = fastdecode_varint64(ptr, &val); \
if (ptr == NULL) return fastdecode_err(d, kUpb_DecodeStatus_Malformed); \
val = fastdecode_munge(val, valbytes, zigzag); \
memcpy(dst, &val, valbytes); \
\
if (card == CARD_r) { \
fastdecode_nextret ret = fastdecode_nextrepeated( \
d, dst, &ptr, &farr, data, tagbytes, valbytes); \
switch (ret.next) { \
case FD_NEXT_SAMEFIELD: \
dst = ret.dst; \
goto again; \
case FD_NEXT_OTHERFIELD: \
data = ret.tag; \
UPB_MUSTTAIL return fastdecode_tagdispatch(UPB_PARSE_ARGS); \
case FD_NEXT_ATLIMIT: \
return ptr; \
} \
} \
\
UPB_MUSTTAIL return fastdecode_dispatch(UPB_PARSE_ARGS);
typedef struct {
uint8_t valbytes;
bool zigzag;
void* dst;
fastdecode_arr farr;
} fastdecode_varintdata;
UPB_FORCEINLINE
static const char* fastdecode_topackedvarint(upb_Decoder* d, const char* ptr,
void* ctx) {
fastdecode_varintdata* data = ctx;
void* dst = data->dst;
uint64_t val;
while (!decode_isdone(d, &ptr)) {
dst = fastdecode_resizearr(d, dst, &data->farr, data->valbytes);
ptr = fastdecode_varint64(ptr, &val);
if (ptr == NULL) return NULL;
val = fastdecode_munge(val, data->valbytes, data->zigzag);
memcpy(dst, &val, data->valbytes);
dst = (char*)dst + data->valbytes;
}
fastdecode_commitarr(dst, &data->farr, data->valbytes);
return ptr;
}
#define FASTDECODE_PACKEDVARINT(d, ptr, msg, table, hasbits, data, tagbytes, \
valbytes, zigzag, unpacked) \
fastdecode_varintdata ctx = {valbytes, zigzag}; \
\
FASTDECODE_CHECKPACKED(tagbytes, CARD_r, unpacked); \
\
ctx.dst = fastdecode_getfield(d, ptr, msg, &data, &hasbits, &ctx.farr, \
valbytes, CARD_r); \
if (UPB_UNLIKELY(!ctx.dst)) { \
RETURN_GENERIC("need array resize\n"); \
} \
\
ptr += tagbytes; \
ptr = fastdecode_delimited(d, ptr, &fastdecode_topackedvarint, &ctx); \
\
if (UPB_UNLIKELY(ptr == NULL)) { \
return fastdecode_err(d, kUpb_DecodeStatus_Malformed); \
} \
\
UPB_MUSTTAIL return fastdecode_dispatch(d, ptr, msg, table, hasbits, 0);
#define FASTDECODE_VARINT(d, ptr, msg, table, hasbits, data, tagbytes, \
valbytes, card, zigzag, unpacked, packed) \
if (card == CARD_p) { \
FASTDECODE_PACKEDVARINT(d, ptr, msg, table, hasbits, data, tagbytes, \
valbytes, zigzag, unpacked); \
} else { \
FASTDECODE_UNPACKEDVARINT(d, ptr, msg, table, hasbits, data, tagbytes, \
valbytes, card, zigzag, packed); \
}
#define z_ZZ true
#define b_ZZ false
#define v_ZZ false
/* Generate all combinations:
* {s,o,r,p} x {b1,v4,z4,v8,z8} x {1bt,2bt} */
#define F(card, type, valbytes, tagbytes) \
UPB_NOINLINE \
const char* upb_p##card##type##valbytes##_##tagbytes##bt(UPB_PARSE_PARAMS) { \
FASTDECODE_VARINT(d, ptr, msg, table, hasbits, data, tagbytes, valbytes, \
CARD_##card, type##_ZZ, \
upb_pr##type##valbytes##_##tagbytes##bt, \
upb_pp##type##valbytes##_##tagbytes##bt); \
}
#define TYPES(card, tagbytes) \
F(card, b, 1, tagbytes) \
F(card, v, 4, tagbytes) \
F(card, v, 8, tagbytes) \
F(card, z, 4, tagbytes) \
F(card, z, 8, tagbytes)
#define TAGBYTES(card) \
TYPES(card, 1) \
TYPES(card, 2)
TAGBYTES(s)
TAGBYTES(o)
TAGBYTES(r)
TAGBYTES(p)
#undef z_ZZ
#undef b_ZZ
#undef v_ZZ
#undef o_ONEOF
#undef s_ONEOF
#undef r_ONEOF
#undef F
#undef TYPES
#undef TAGBYTES
#undef FASTDECODE_UNPACKEDVARINT
#undef FASTDECODE_PACKEDVARINT
#undef FASTDECODE_VARINT
/* fixed fields ***************************************************************/
#define FASTDECODE_UNPACKEDFIXED(d, ptr, msg, table, hasbits, data, tagbytes, \
valbytes, card, packed) \
void* dst; \
fastdecode_arr farr; \
\
FASTDECODE_CHECKPACKED(tagbytes, card, packed) \
\
dst = fastdecode_getfield(d, ptr, msg, &data, &hasbits, &farr, valbytes, \
card); \
if (card == CARD_r) { \
if (UPB_UNLIKELY(!dst)) { \
RETURN_GENERIC("couldn't allocate array in arena\n"); \
} \
} \
\
again: \
if (card == CARD_r) { \
dst = fastdecode_resizearr(d, dst, &farr, valbytes); \
} \
\
ptr += tagbytes; \
memcpy(dst, ptr, valbytes); \
ptr += valbytes; \
\
if (card == CARD_r) { \
fastdecode_nextret ret = fastdecode_nextrepeated( \
d, dst, &ptr, &farr, data, tagbytes, valbytes); \
switch (ret.next) { \
case FD_NEXT_SAMEFIELD: \
dst = ret.dst; \
goto again; \
case FD_NEXT_OTHERFIELD: \
data = ret.tag; \
UPB_MUSTTAIL return fastdecode_tagdispatch(UPB_PARSE_ARGS); \
case FD_NEXT_ATLIMIT: \
return ptr; \
} \
} \
\
UPB_MUSTTAIL return fastdecode_dispatch(UPB_PARSE_ARGS);
#define FASTDECODE_PACKEDFIXED(d, ptr, msg, table, hasbits, data, tagbytes, \
valbytes, unpacked) \
FASTDECODE_CHECKPACKED(tagbytes, CARD_r, unpacked) \
\
ptr += tagbytes; \
int size = (uint8_t)ptr[0]; \
ptr++; \
if (size & 0x80) { \
ptr = fastdecode_longsize(ptr, &size); \
} \
\
if (UPB_UNLIKELY(fastdecode_boundscheck(ptr, size, d->limit_ptr) || \
(size % valbytes) != 0)) { \
return fastdecode_err(d, kUpb_DecodeStatus_Malformed); \
} \
\
upb_Array** arr_p = fastdecode_fieldmem(msg, data); \
upb_Array* arr = *arr_p; \
uint8_t elem_size_lg2 = __builtin_ctz(valbytes); \
int elems = size / valbytes; \
\
if (UPB_LIKELY(!arr)) { \
*arr_p = arr = _upb_Array_New(&d->arena, elems, elem_size_lg2); \
if (!arr) { \
return fastdecode_err(d, kUpb_DecodeStatus_Malformed); \
} \
} else { \
_upb_Array_Resize(arr, elems, &d->arena); \
} \
\
char* dst = _upb_array_ptr(arr); \
memcpy(dst, ptr, size); \
arr->len = elems; \
\
ptr += size; \
UPB_MUSTTAIL return fastdecode_dispatch(UPB_PARSE_ARGS);
#define FASTDECODE_FIXED(d, ptr, msg, table, hasbits, data, tagbytes, \
valbytes, card, unpacked, packed) \
if (card == CARD_p) { \
FASTDECODE_PACKEDFIXED(d, ptr, msg, table, hasbits, data, tagbytes, \
valbytes, unpacked); \
} else { \
FASTDECODE_UNPACKEDFIXED(d, ptr, msg, table, hasbits, data, tagbytes, \
valbytes, card, packed); \
}
/* Generate all combinations:
* {s,o,r,p} x {f4,f8} x {1bt,2bt} */
#define F(card, valbytes, tagbytes) \
UPB_NOINLINE \
const char* upb_p##card##f##valbytes##_##tagbytes##bt(UPB_PARSE_PARAMS) { \
FASTDECODE_FIXED(d, ptr, msg, table, hasbits, data, tagbytes, valbytes, \
CARD_##card, upb_ppf##valbytes##_##tagbytes##bt, \
upb_prf##valbytes##_##tagbytes##bt); \
}
#define TYPES(card, tagbytes) \
F(card, 4, tagbytes) \
F(card, 8, tagbytes)
#define TAGBYTES(card) \
TYPES(card, 1) \
TYPES(card, 2)
TAGBYTES(s)
TAGBYTES(o)
TAGBYTES(r)
TAGBYTES(p)
#undef F
#undef TYPES
#undef TAGBYTES
#undef FASTDECODE_UNPACKEDFIXED
#undef FASTDECODE_PACKEDFIXED
/* string fields **************************************************************/
typedef const char* fastdecode_copystr_func(struct upb_Decoder* d,
const char* ptr, upb_Message* msg,
const upb_MiniTable* table,
uint64_t hasbits,
upb_StringView* dst);
UPB_NOINLINE
static const char* fastdecode_verifyutf8(upb_Decoder* d, const char* ptr,
upb_Message* msg, intptr_t table,
uint64_t hasbits, uint64_t data) {
upb_StringView* dst = (upb_StringView*)data;
if (!decode_verifyutf8_inl(dst->data, dst->size)) {
return fastdecode_err(d, kUpb_DecodeStatus_BadUtf8);
}
UPB_MUSTTAIL return fastdecode_dispatch(UPB_PARSE_ARGS);
}
#define FASTDECODE_LONGSTRING(d, ptr, msg, table, hasbits, dst, validate_utf8) \
int size = (uint8_t)ptr[0]; /* Could plumb through hasbits. */ \
ptr++; \
if (size & 0x80) { \
ptr = fastdecode_longsize(ptr, &size); \
} \
\
if (UPB_UNLIKELY(fastdecode_boundscheck(ptr, size, d->limit_ptr))) { \
dst->size = 0; \
return fastdecode_err(d, kUpb_DecodeStatus_Malformed); \
} \
\
if (d->options & kUpb_DecodeOption_AliasString) { \
dst->data = ptr; \
dst->size = size; \
} else { \
char* data = upb_Arena_Malloc(&d->arena, size); \
if (!data) { \
return fastdecode_err(d, kUpb_DecodeStatus_OutOfMemory); \
} \
memcpy(data, ptr, size); \
dst->data = data; \
dst->size = size; \
} \
\
ptr += size; \
if (validate_utf8) { \
data = (uint64_t)dst; \
UPB_MUSTTAIL return fastdecode_verifyutf8(UPB_PARSE_ARGS); \
} else { \
UPB_MUSTTAIL return fastdecode_dispatch(UPB_PARSE_ARGS); \
}
UPB_NOINLINE
static const char* fastdecode_longstring_utf8(struct upb_Decoder* d,
const char* ptr, upb_Message* msg,
intptr_t table, uint64_t hasbits,
uint64_t data) {
upb_StringView* dst = (upb_StringView*)data;
FASTDECODE_LONGSTRING(d, ptr, msg, table, hasbits, dst, true);
}
UPB_NOINLINE
static const char* fastdecode_longstring_noutf8(
struct upb_Decoder* d, const char* ptr, upb_Message* msg, intptr_t table,
uint64_t hasbits, uint64_t data) {
upb_StringView* dst = (upb_StringView*)data;
FASTDECODE_LONGSTRING(d, ptr, msg, table, hasbits, dst, false);
}
UPB_FORCEINLINE
static void fastdecode_docopy(upb_Decoder* d, const char* ptr, uint32_t size,
int copy, char* data, upb_StringView* dst) {
d->arena.head.ptr += copy;
dst->data = data;
UPB_UNPOISON_MEMORY_REGION(data, copy);
memcpy(data, ptr, copy);
UPB_POISON_MEMORY_REGION(data + size, copy - size);
}
#define FASTDECODE_COPYSTRING(d, ptr, msg, table, hasbits, data, tagbytes, \
card, validate_utf8) \
upb_StringView* dst; \
fastdecode_arr farr; \
int64_t size; \
size_t arena_has; \
size_t common_has; \
char* buf; \
\
UPB_ASSERT((d->options & kUpb_DecodeOption_AliasString) == 0); \
UPB_ASSERT(fastdecode_checktag(data, tagbytes)); \
\
dst = fastdecode_getfield(d, ptr, msg, &data, &hasbits, &farr, \
sizeof(upb_StringView), card); \
\
again: \
if (card == CARD_r) { \
dst = fastdecode_resizearr(d, dst, &farr, sizeof(upb_StringView)); \
} \
\
size = (uint8_t)ptr[tagbytes]; \
ptr += tagbytes + 1; \
dst->size = size; \
\
buf = d->arena.head.ptr; \
arena_has = _upb_ArenaHas(&d->arena); \
common_has = UPB_MIN(arena_has, (d->end - ptr) + 16); \
\
if (UPB_LIKELY(size <= 15 - tagbytes)) { \
if (arena_has < 16) goto longstr; \
d->arena.head.ptr += 16; \
memcpy(buf, ptr - tagbytes - 1, 16); \
dst->data = buf + tagbytes + 1; \
} else if (UPB_LIKELY(size <= 32)) { \
if (UPB_UNLIKELY(common_has < 32)) goto longstr; \
fastdecode_docopy(d, ptr, size, 32, buf, dst); \
} else if (UPB_LIKELY(size <= 64)) { \
if (UPB_UNLIKELY(common_has < 64)) goto longstr; \
fastdecode_docopy(d, ptr, size, 64, buf, dst); \
} else if (UPB_LIKELY(size < 128)) { \
if (UPB_UNLIKELY(common_has < 128)) goto longstr; \
fastdecode_docopy(d, ptr, size, 128, buf, dst); \
} else { \
goto longstr; \
} \
\
ptr += size; \
\
if (card == CARD_r) { \
if (validate_utf8 && !decode_verifyutf8_inl(dst->data, dst->size)) { \
return fastdecode_err(d, kUpb_DecodeStatus_BadUtf8); \
} \
fastdecode_nextret ret = fastdecode_nextrepeated( \
d, dst, &ptr, &farr, data, tagbytes, sizeof(upb_StringView)); \
switch (ret.next) { \
case FD_NEXT_SAMEFIELD: \
dst = ret.dst; \
goto again; \
case FD_NEXT_OTHERFIELD: \
data = ret.tag; \
UPB_MUSTTAIL return fastdecode_tagdispatch(UPB_PARSE_ARGS); \
case FD_NEXT_ATLIMIT: \
return ptr; \
} \
} \
\
if (card != CARD_r && validate_utf8) { \
data = (uint64_t)dst; \
UPB_MUSTTAIL return fastdecode_verifyutf8(UPB_PARSE_ARGS); \
} \
\
UPB_MUSTTAIL return fastdecode_dispatch(UPB_PARSE_ARGS); \
\
longstr: \
if (card == CARD_r) { \
fastdecode_commitarr(dst + 1, &farr, sizeof(upb_StringView)); \
} \
ptr--; \
if (validate_utf8) { \
UPB_MUSTTAIL return fastdecode_longstring_utf8(d, ptr, msg, table, \
hasbits, (uint64_t)dst); \
} else { \
UPB_MUSTTAIL return fastdecode_longstring_noutf8(d, ptr, msg, table, \
hasbits, (uint64_t)dst); \
}
#define FASTDECODE_STRING(d, ptr, msg, table, hasbits, data, tagbytes, card, \
copyfunc, validate_utf8) \
upb_StringView* dst; \
fastdecode_arr farr; \
int64_t size; \
\
if (UPB_UNLIKELY(!fastdecode_checktag(data, tagbytes))) { \
RETURN_GENERIC("string field tag mismatch\n"); \
} \
\
if (UPB_UNLIKELY((d->options & kUpb_DecodeOption_AliasString) == 0)) { \
UPB_MUSTTAIL return copyfunc(UPB_PARSE_ARGS); \
} \
\
dst = fastdecode_getfield(d, ptr, msg, &data, &hasbits, &farr, \
sizeof(upb_StringView), card); \
\
again: \
if (card == CARD_r) { \
dst = fastdecode_resizearr(d, dst, &farr, sizeof(upb_StringView)); \
} \
\
size = (int8_t)ptr[tagbytes]; \
ptr += tagbytes + 1; \
dst->data = ptr; \
dst->size = size; \
\
if (UPB_UNLIKELY(fastdecode_boundscheck(ptr, size, d->end))) { \
ptr--; \
if (validate_utf8) { \
return fastdecode_longstring_utf8(d, ptr, msg, table, hasbits, \
(uint64_t)dst); \
} else { \
return fastdecode_longstring_noutf8(d, ptr, msg, table, hasbits, \
(uint64_t)dst); \
} \
} \
\
ptr += size; \
\
if (card == CARD_r) { \
if (validate_utf8 && !decode_verifyutf8_inl(dst->data, dst->size)) { \
return fastdecode_err(d, kUpb_DecodeStatus_BadUtf8); \
} \
fastdecode_nextret ret = fastdecode_nextrepeated( \
d, dst, &ptr, &farr, data, tagbytes, sizeof(upb_StringView)); \
switch (ret.next) { \
case FD_NEXT_SAMEFIELD: \
dst = ret.dst; \
if (UPB_UNLIKELY((d->options & kUpb_DecodeOption_AliasString) == 0)) { \
/* Buffer flipped and we can't alias any more. Bounce to */ \
/* copyfunc(), but via dispatch since we need to reload table */ \
/* data also. */ \
fastdecode_commitarr(dst, &farr, sizeof(upb_StringView)); \
data = ret.tag; \
UPB_MUSTTAIL return fastdecode_tagdispatch(UPB_PARSE_ARGS); \
} \
goto again; \
case FD_NEXT_OTHERFIELD: \
data = ret.tag; \
UPB_MUSTTAIL return fastdecode_tagdispatch(UPB_PARSE_ARGS); \
case FD_NEXT_ATLIMIT: \
return ptr; \
} \
} \
\
if (card != CARD_r && validate_utf8) { \
data = (uint64_t)dst; \
UPB_MUSTTAIL return fastdecode_verifyutf8(UPB_PARSE_ARGS); \
} \
\
UPB_MUSTTAIL return fastdecode_dispatch(UPB_PARSE_ARGS);
/* Generate all combinations:
* {p,c} x {s,o,r} x {s, b} x {1bt,2bt} */
#define s_VALIDATE true
#define b_VALIDATE false
#define F(card, tagbytes, type) \
UPB_NOINLINE \
const char* upb_c##card##type##_##tagbytes##bt(UPB_PARSE_PARAMS) { \
FASTDECODE_COPYSTRING(d, ptr, msg, table, hasbits, data, tagbytes, \
CARD_##card, type##_VALIDATE); \
} \
const char* upb_p##card##type##_##tagbytes##bt(UPB_PARSE_PARAMS) { \
FASTDECODE_STRING(d, ptr, msg, table, hasbits, data, tagbytes, \
CARD_##card, upb_c##card##type##_##tagbytes##bt, \
type##_VALIDATE); \
}
#define UTF8(card, tagbytes) \
F(card, tagbytes, s) \
F(card, tagbytes, b)
#define TAGBYTES(card) \
UTF8(card, 1) \
UTF8(card, 2)
TAGBYTES(s)
TAGBYTES(o)
TAGBYTES(r)
#undef s_VALIDATE
#undef b_VALIDATE
#undef F
#undef TAGBYTES
#undef FASTDECODE_LONGSTRING
#undef FASTDECODE_COPYSTRING
#undef FASTDECODE_STRING
/* message fields *************************************************************/
UPB_INLINE
upb_Message* decode_newmsg_ceil(upb_Decoder* d, const upb_MiniTable* l,
int msg_ceil_bytes) {
size_t size = l->size + sizeof(upb_Message_Internal);
char* msg_data;
if (UPB_LIKELY(msg_ceil_bytes > 0 &&
_upb_ArenaHas(&d->arena) >= msg_ceil_bytes)) {
UPB_ASSERT(size <= (size_t)msg_ceil_bytes);
msg_data = d->arena.head.ptr;
d->arena.head.ptr += size;
UPB_UNPOISON_MEMORY_REGION(msg_data, msg_ceil_bytes);
memset(msg_data, 0, msg_ceil_bytes);
UPB_POISON_MEMORY_REGION(msg_data + size, msg_ceil_bytes - size);
} else {
msg_data = (char*)upb_Arena_Malloc(&d->arena, size);
memset(msg_data, 0, size);
}
return msg_data + sizeof(upb_Message_Internal);
}
typedef struct {
intptr_t table;
upb_Message* msg;
} fastdecode_submsgdata;
UPB_FORCEINLINE
static const char* fastdecode_tosubmsg(upb_Decoder* d, const char* ptr,
void* ctx) {
fastdecode_submsgdata* submsg = ctx;
ptr = fastdecode_dispatch(d, ptr, submsg->msg, submsg->table, 0, 0);
UPB_ASSUME(ptr != NULL);
return ptr;
}
#define FASTDECODE_SUBMSG(d, ptr, msg, table, hasbits, data, tagbytes, \
msg_ceil_bytes, card) \
\
if (UPB_UNLIKELY(!fastdecode_checktag(data, tagbytes))) { \
RETURN_GENERIC("submessage field tag mismatch\n"); \
} \
\
if (--d->depth == 0) { \
return fastdecode_err(d, kUpb_DecodeStatus_MaxDepthExceeded); \
} \
\
upb_Message** dst; \
uint32_t submsg_idx = (data >> 16) & 0xff; \
const upb_MiniTable* tablep = decode_totablep(table); \
const upb_MiniTable* subtablep = tablep->subs[submsg_idx].submsg; \
fastdecode_submsgdata submsg = {decode_totable(subtablep)}; \
fastdecode_arr farr; \
\
if (subtablep->table_mask == (uint8_t)-1) { \
RETURN_GENERIC("submessage doesn't have fast tables."); \
} \
\
dst = fastdecode_getfield(d, ptr, msg, &data, &hasbits, &farr, \
sizeof(upb_Message*), card); \
\
if (card == CARD_s) { \
*(uint32_t*)msg |= hasbits; \
hasbits = 0; \
} \
\
again: \
if (card == CARD_r) { \
dst = fastdecode_resizearr(d, dst, &farr, sizeof(upb_Message*)); \
} \
\
submsg.msg = *dst; \
\
if (card == CARD_r || UPB_LIKELY(!submsg.msg)) { \
*dst = submsg.msg = decode_newmsg_ceil(d, subtablep, msg_ceil_bytes); \
} \
\
ptr += tagbytes; \
ptr = fastdecode_delimited(d, ptr, fastdecode_tosubmsg, &submsg); \
\
if (UPB_UNLIKELY(ptr == NULL || d->end_group != DECODE_NOGROUP)) { \
return fastdecode_err(d, kUpb_DecodeStatus_Malformed); \
} \
\
if (card == CARD_r) { \
fastdecode_nextret ret = fastdecode_nextrepeated( \
d, dst, &ptr, &farr, data, tagbytes, sizeof(upb_Message*)); \
switch (ret.next) { \
case FD_NEXT_SAMEFIELD: \
dst = ret.dst; \
goto again; \
case FD_NEXT_OTHERFIELD: \
d->depth++; \
data = ret.tag; \
UPB_MUSTTAIL return fastdecode_tagdispatch(UPB_PARSE_ARGS); \
case FD_NEXT_ATLIMIT: \
d->depth++; \
return ptr; \
} \
} \
\
d->depth++; \
UPB_MUSTTAIL return fastdecode_dispatch(UPB_PARSE_ARGS);
#define F(card, tagbytes, size_ceil, ceil_arg) \
const char* upb_p##card##m_##tagbytes##bt_max##size_ceil##b( \
UPB_PARSE_PARAMS) { \
FASTDECODE_SUBMSG(d, ptr, msg, table, hasbits, data, tagbytes, ceil_arg, \
CARD_##card); \
}
#define SIZES(card, tagbytes) \
F(card, tagbytes, 64, 64) \
F(card, tagbytes, 128, 128) \
F(card, tagbytes, 192, 192) \
F(card, tagbytes, 256, 256) \
F(card, tagbytes, max, -1)
#define TAGBYTES(card) \
SIZES(card, 1) \
SIZES(card, 2)
TAGBYTES(s)
TAGBYTES(o)
TAGBYTES(r)
#undef TAGBYTES
#undef SIZES
#undef F
#undef FASTDECODE_SUBMSG
#endif /* UPB_FASTTABLE */
/** upb/json_decode.c ************************************************************/
#include <errno.h>
#include <float.h>
#include <inttypes.h>
#include <limits.h>
#include <math.h>
#include <setjmp.h>
#include <stdlib.h>
#include <string.h>
/* Special header, must be included last. */
typedef struct {
const char *ptr, *end;
upb_Arena* arena; /* TODO: should we have a tmp arena for tmp data? */
const upb_DefPool* symtab;
int depth;
upb_Status* status;
jmp_buf err;
int line;
const char* line_begin;
bool is_first;
int options;
const upb_FieldDef* debug_field;
} jsondec;
enum { JD_OBJECT, JD_ARRAY, JD_STRING, JD_NUMBER, JD_TRUE, JD_FALSE, JD_NULL };
/* Forward declarations of mutually-recursive functions. */
static void jsondec_wellknown(jsondec* d, upb_Message* msg,
const upb_MessageDef* m);
static upb_MessageValue jsondec_value(jsondec* d, const upb_FieldDef* f);
static void jsondec_wellknownvalue(jsondec* d, upb_Message* msg,
const upb_MessageDef* m);
static void jsondec_object(jsondec* d, upb_Message* msg,
const upb_MessageDef* m);
static bool jsondec_streql(upb_StringView str, const char* lit) {
return str.size == strlen(lit) && memcmp(str.data, lit, str.size) == 0;
}
static bool jsondec_isnullvalue(const upb_FieldDef* f) {
return upb_FieldDef_CType(f) == kUpb_CType_Enum &&
strcmp(upb_EnumDef_FullName(upb_FieldDef_EnumSubDef(f)),
"google.protobuf.NullValue") == 0;
}
static bool jsondec_isvalue(const upb_FieldDef* f) {
return (upb_FieldDef_CType(f) == kUpb_CType_Message &&
upb_MessageDef_WellKnownType(upb_FieldDef_MessageSubDef(f)) ==
kUpb_WellKnown_Value) ||
jsondec_isnullvalue(f);
}
UPB_NORETURN static void jsondec_err(jsondec* d, const char* msg) {
upb_Status_SetErrorFormat(d->status, "Error parsing JSON @%d:%d: %s", d->line,
(int)(d->ptr - d->line_begin), msg);
UPB_LONGJMP(d->err, 1);
}
UPB_PRINTF(2, 3)
UPB_NORETURN static void jsondec_errf(jsondec* d, const char* fmt, ...) {
va_list argp;
upb_Status_SetErrorFormat(d->status, "Error parsing JSON @%d:%d: ", d->line,
(int)(d->ptr - d->line_begin));
va_start(argp, fmt);
upb_Status_VAppendErrorFormat(d->status, fmt, argp);
va_end(argp);
UPB_LONGJMP(d->err, 1);
}
static void jsondec_skipws(jsondec* d) {
while (d->ptr != d->end) {
switch (*d->ptr) {
case '\n':
d->line++;
d->line_begin = d->ptr;
/* Fallthrough. */
case '\r':
case '\t':
case ' ':
d->ptr++;
break;
default:
return;
}
}
jsondec_err(d, "Unexpected EOF");
}
static bool jsondec_tryparsech(jsondec* d, char ch) {
if (d->ptr == d->end || *d->ptr != ch) return false;
d->ptr++;
return true;
}
static void jsondec_parselit(jsondec* d, const char* lit) {
size_t avail = d->end - d->ptr;
size_t len = strlen(lit);
if (avail < len || memcmp(d->ptr, lit, len) != 0) {
jsondec_errf(d, "Expected: '%s'", lit);
}
d->ptr += len;
}
static void jsondec_wsch(jsondec* d, char ch) {
jsondec_skipws(d);
if (!jsondec_tryparsech(d, ch)) {
jsondec_errf(d, "Expected: '%c'", ch);
}
}
static void jsondec_true(jsondec* d) { jsondec_parselit(d, "true"); }
static void jsondec_false(jsondec* d) { jsondec_parselit(d, "false"); }
static void jsondec_null(jsondec* d) { jsondec_parselit(d, "null"); }
static void jsondec_entrysep(jsondec* d) {
jsondec_skipws(d);
jsondec_parselit(d, ":");
}
static int jsondec_rawpeek(jsondec* d) {
switch (*d->ptr) {
case '{':
return JD_OBJECT;
case '[':
return JD_ARRAY;
case '"':
return JD_STRING;
case '-':
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
return JD_NUMBER;
case 't':
return JD_TRUE;
case 'f':
return JD_FALSE;
case 'n':
return JD_NULL;
default:
jsondec_errf(d, "Unexpected character: '%c'", *d->ptr);
}
}
/* JSON object/array **********************************************************/
/* These are used like so:
*
* jsondec_objstart(d);
* while (jsondec_objnext(d)) {
* ...
* }
* jsondec_objend(d) */
static int jsondec_peek(jsondec* d) {
jsondec_skipws(d);
return jsondec_rawpeek(d);
}
static void jsondec_push(jsondec* d) {
if (--d->depth < 0) {
jsondec_err(d, "Recursion limit exceeded");
}
d->is_first = true;
}
static bool jsondec_seqnext(jsondec* d, char end_ch) {
bool is_first = d->is_first;
d->is_first = false;
jsondec_skipws(d);
if (*d->ptr == end_ch) return false;
if (!is_first) jsondec_parselit(d, ",");
return true;
}
static void jsondec_arrstart(jsondec* d) {
jsondec_push(d);
jsondec_wsch(d, '[');
}
static void jsondec_arrend(jsondec* d) {
d->depth++;
jsondec_wsch(d, ']');
}
static bool jsondec_arrnext(jsondec* d) { return jsondec_seqnext(d, ']'); }
static void jsondec_objstart(jsondec* d) {
jsondec_push(d);
jsondec_wsch(d, '{');
}
static void jsondec_objend(jsondec* d) {
d->depth++;
jsondec_wsch(d, '}');
}
static bool jsondec_objnext(jsondec* d) {
if (!jsondec_seqnext(d, '}')) return false;
if (jsondec_peek(d) != JD_STRING) {
jsondec_err(d, "Object must start with string");
}
return true;
}
/* JSON number ****************************************************************/
static bool jsondec_tryskipdigits(jsondec* d) {
const char* start = d->ptr;
while (d->ptr < d->end) {
if (*d->ptr < '0' || *d->ptr > '9') {
break;
}
d->ptr++;
}
return d->ptr != start;
}
static void jsondec_skipdigits(jsondec* d) {
if (!jsondec_tryskipdigits(d)) {
jsondec_err(d, "Expected one or more digits");
}
}
static double jsondec_number(jsondec* d) {
const char* start = d->ptr;
assert(jsondec_rawpeek(d) == JD_NUMBER);
/* Skip over the syntax of a number, as specified by JSON. */
if (*d->ptr == '-') d->ptr++;
if (jsondec_tryparsech(d, '0')) {
if (jsondec_tryskipdigits(d)) {
jsondec_err(d, "number cannot have leading zero");
}
} else {
jsondec_skipdigits(d);
}
if (d->ptr == d->end) goto parse;
if (jsondec_tryparsech(d, '.')) {
jsondec_skipdigits(d);
}
if (d->ptr == d->end) goto parse;
if (*d->ptr == 'e' || *d->ptr == 'E') {
d->ptr++;
if (d->ptr == d->end) {
jsondec_err(d, "Unexpected EOF in number");
}
if (*d->ptr == '+' || *d->ptr == '-') {
d->ptr++;
}
jsondec_skipdigits(d);
}
parse:
/* Having verified the syntax of a JSON number, use strtod() to parse
* (strtod() accepts a superset of JSON syntax). */
errno = 0;
{
char* end;
double val = strtod(start, &end);
assert(end == d->ptr);
/* Currently the min/max-val conformance tests fail if we check this. Does
* this mean the conformance tests are wrong or strtod() is wrong, or
* something else? Investigate further. */
/*
if (errno == ERANGE) {
jsondec_err(d, "Number out of range");
}
*/
if (val > DBL_MAX || val < -DBL_MAX) {
jsondec_err(d, "Number out of range");
}
return val;
}
}
/* JSON string ****************************************************************/
static char jsondec_escape(jsondec* d) {
switch (*d->ptr++) {
case '"':
return '\"';
case '\\':
return '\\';
case '/':
return '/';
case 'b':
return '\b';
case 'f':
return '\f';
case 'n':
return '\n';
case 'r':
return '\r';
case 't':
return '\t';
default:
jsondec_err(d, "Invalid escape char");
}
}
static uint32_t jsondec_codepoint(jsondec* d) {
uint32_t cp = 0;
const char* end;
if (d->end - d->ptr < 4) {
jsondec_err(d, "EOF inside string");
}
end = d->ptr + 4;
while (d->ptr < end) {
char ch = *d->ptr++;
if (ch >= '0' && ch <= '9') {
ch -= '0';
} else if (ch >= 'a' && ch <= 'f') {
ch = ch - 'a' + 10;
} else if (ch >= 'A' && ch <= 'F') {
ch = ch - 'A' + 10;
} else {
jsondec_err(d, "Invalid hex digit");
}
cp = (cp << 4) | ch;
}
return cp;
}
/* Parses a \uXXXX unicode escape (possibly a surrogate pair). */
static size_t jsondec_unicode(jsondec* d, char* out) {
uint32_t cp = jsondec_codepoint(d);
if (cp >= 0xd800 && cp <= 0xdbff) {
/* Surrogate pair: two 16-bit codepoints become a 32-bit codepoint. */
uint32_t high = cp;
uint32_t low;
jsondec_parselit(d, "\\u");
low = jsondec_codepoint(d);
if (low < 0xdc00 || low > 0xdfff) {
jsondec_err(d, "Invalid low surrogate");
}
cp = (high & 0x3ff) << 10;
cp |= (low & 0x3ff);
cp += 0x10000;
} else if (cp >= 0xdc00 && cp <= 0xdfff) {
jsondec_err(d, "Unpaired low surrogate");
}
/* Write to UTF-8 */
if (cp <= 0x7f) {
out[0] = cp;
return 1;
} else if (cp <= 0x07FF) {
out[0] = ((cp >> 6) & 0x1F) | 0xC0;
out[1] = ((cp >> 0) & 0x3F) | 0x80;
return 2;
} else if (cp <= 0xFFFF) {
out[0] = ((cp >> 12) & 0x0F) | 0xE0;
out[1] = ((cp >> 6) & 0x3F) | 0x80;
out[2] = ((cp >> 0) & 0x3F) | 0x80;
return 3;
} else if (cp < 0x10FFFF) {
out[0] = ((cp >> 18) & 0x07) | 0xF0;
out[1] = ((cp >> 12) & 0x3f) | 0x80;
out[2] = ((cp >> 6) & 0x3f) | 0x80;
out[3] = ((cp >> 0) & 0x3f) | 0x80;
return 4;
} else {
jsondec_err(d, "Invalid codepoint");
}
}
static void jsondec_resize(jsondec* d, char** buf, char** end, char** buf_end) {
size_t oldsize = *buf_end - *buf;
size_t len = *end - *buf;
size_t size = UPB_MAX(8, 2 * oldsize);
*buf = upb_Arena_Realloc(d->arena, *buf, len, size);
if (!*buf) jsondec_err(d, "Out of memory");
*end = *buf + len;
*buf_end = *buf + size;
}
static upb_StringView jsondec_string(jsondec* d) {
char* buf = NULL;
char* end = NULL;
char* buf_end = NULL;
jsondec_skipws(d);
if (*d->ptr++ != '"') {
jsondec_err(d, "Expected string");
}
while (d->ptr < d->end) {
char ch = *d->ptr++;
if (end == buf_end) {
jsondec_resize(d, &buf, &end, &buf_end);
}
switch (ch) {
case '"': {
upb_StringView ret;
ret.data = buf;
ret.size = end - buf;
*end = '\0'; /* Needed for possible strtod(). */
return ret;
}
case '\\':
if (d->ptr == d->end) goto eof;
if (*d->ptr == 'u') {
d->ptr++;
if (buf_end - end < 4) {
/* Allow space for maximum-sized code point (4 bytes). */
jsondec_resize(d, &buf, &end, &buf_end);
}
end += jsondec_unicode(d, end);
} else {
*end++ = jsondec_escape(d);
}
break;
default:
if ((unsigned char)*d->ptr < 0x20) {
jsondec_err(d, "Invalid char in JSON string");
}
*end++ = ch;
break;
}
}
eof:
jsondec_err(d, "EOF inside string");
}
static void jsondec_skipval(jsondec* d) {
switch (jsondec_peek(d)) {
case JD_OBJECT:
jsondec_objstart(d);
while (jsondec_objnext(d)) {
jsondec_string(d);
jsondec_entrysep(d);
jsondec_skipval(d);
}
jsondec_objend(d);
break;
case JD_ARRAY:
jsondec_arrstart(d);
while (jsondec_arrnext(d)) {
jsondec_skipval(d);
}
jsondec_arrend(d);
break;
case JD_TRUE:
jsondec_true(d);
break;
case JD_FALSE:
jsondec_false(d);
break;
case JD_NULL:
jsondec_null(d);
break;
case JD_STRING:
jsondec_string(d);
break;
case JD_NUMBER:
jsondec_number(d);
break;
}
}
/* Base64 decoding for bytes fields. ******************************************/
static unsigned int jsondec_base64_tablelookup(const char ch) {
/* Table includes the normal base64 chars plus the URL-safe variant. */
const signed char table[256] = {
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, 62 /*+*/, -1, 62 /*-*/, -1, 63 /*/ */, 52 /*0*/,
53 /*1*/, 54 /*2*/, 55 /*3*/, 56 /*4*/, 57 /*5*/, 58 /*6*/, 59 /*7*/,
60 /*8*/, 61 /*9*/, -1, -1, -1, -1, -1,
-1, -1, 0 /*A*/, 1 /*B*/, 2 /*C*/, 3 /*D*/, 4 /*E*/,
5 /*F*/, 6 /*G*/, 07 /*H*/, 8 /*I*/, 9 /*J*/, 10 /*K*/, 11 /*L*/,
12 /*M*/, 13 /*N*/, 14 /*O*/, 15 /*P*/, 16 /*Q*/, 17 /*R*/, 18 /*S*/,
19 /*T*/, 20 /*U*/, 21 /*V*/, 22 /*W*/, 23 /*X*/, 24 /*Y*/, 25 /*Z*/,
-1, -1, -1, -1, 63 /*_*/, -1, 26 /*a*/,
27 /*b*/, 28 /*c*/, 29 /*d*/, 30 /*e*/, 31 /*f*/, 32 /*g*/, 33 /*h*/,
34 /*i*/, 35 /*j*/, 36 /*k*/, 37 /*l*/, 38 /*m*/, 39 /*n*/, 40 /*o*/,
41 /*p*/, 42 /*q*/, 43 /*r*/, 44 /*s*/, 45 /*t*/, 46 /*u*/, 47 /*v*/,
48 /*w*/, 49 /*x*/, 50 /*y*/, 51 /*z*/, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1};
/* Sign-extend return value so high bit will be set on any unexpected char. */
return table[(unsigned)ch];
}
static char* jsondec_partialbase64(jsondec* d, const char* ptr, const char* end,
char* out) {
int32_t val = -1;
switch (end - ptr) {
case 2:
val = jsondec_base64_tablelookup(ptr[0]) << 18 |
jsondec_base64_tablelookup(ptr[1]) << 12;
out[0] = val >> 16;
out += 1;
break;
case 3:
val = jsondec_base64_tablelookup(ptr[0]) << 18 |
jsondec_base64_tablelookup(ptr[1]) << 12 |
jsondec_base64_tablelookup(ptr[2]) << 6;
out[0] = val >> 16;
out[1] = (val >> 8) & 0xff;
out += 2;
break;
}
if (val < 0) {
jsondec_err(d, "Corrupt base64");
}
return out;
}
static size_t jsondec_base64(jsondec* d, upb_StringView str) {
/* We decode in place. This is safe because this is a new buffer (not
* aliasing the input) and because base64 decoding shrinks 4 bytes into 3. */
char* out = (char*)str.data;
const char* ptr = str.data;
const char* end = ptr + str.size;
const char* end4 = ptr + (str.size & -4); /* Round down to multiple of 4. */
for (; ptr < end4; ptr += 4, out += 3) {
int val = jsondec_base64_tablelookup(ptr[0]) << 18 |
jsondec_base64_tablelookup(ptr[1]) << 12 |
jsondec_base64_tablelookup(ptr[2]) << 6 |
jsondec_base64_tablelookup(ptr[3]) << 0;
if (val < 0) {
/* Junk chars or padding. Remove trailing padding, if any. */
if (end - ptr == 4 && ptr[3] == '=') {
if (ptr[2] == '=') {
end -= 2;
} else {
end -= 1;
}
}
break;
}
out[0] = val >> 16;
out[1] = (val >> 8) & 0xff;
out[2] = val & 0xff;
}
if (ptr < end) {
/* Process remaining chars. We do not require padding. */
out = jsondec_partialbase64(d, ptr, end, out);
}
return out - str.data;
}
/* Low-level integer parsing **************************************************/
/* We use these hand-written routines instead of strto[u]l() because the "long
* long" variants aren't in c89. Also our version allows setting a ptr limit. */
static const char* jsondec_buftouint64(jsondec* d, const char* ptr,
const char* end, uint64_t* val) {
uint64_t u64 = 0;
while (ptr < end) {
unsigned ch = *ptr - '0';
if (ch >= 10) break;
if (u64 > UINT64_MAX / 10 || u64 * 10 > UINT64_MAX - ch) {
jsondec_err(d, "Integer overflow");
}
u64 *= 10;
u64 += ch;
ptr++;
}
*val = u64;
return ptr;
}
static const char* jsondec_buftoint64(jsondec* d, const char* ptr,
const char* end, int64_t* val) {
bool neg = false;
uint64_t u64;
if (ptr != end && *ptr == '-') {
ptr++;
neg = true;
}
ptr = jsondec_buftouint64(d, ptr, end, &u64);
if (u64 > (uint64_t)INT64_MAX + neg) {
jsondec_err(d, "Integer overflow");
}
*val = neg ? -u64 : u64;
return ptr;
}
static uint64_t jsondec_strtouint64(jsondec* d, upb_StringView str) {
const char* end = str.data + str.size;
uint64_t ret;
if (jsondec_buftouint64(d, str.data, end, &ret) != end) {
jsondec_err(d, "Non-number characters in quoted integer");
}
return ret;
}
static int64_t jsondec_strtoint64(jsondec* d, upb_StringView str) {
const char* end = str.data + str.size;
int64_t ret;
if (jsondec_buftoint64(d, str.data, end, &ret) != end) {
jsondec_err(d, "Non-number characters in quoted integer");
}
return ret;
}
/* Primitive value types ******************************************************/
/* Parse INT32 or INT64 value. */
static upb_MessageValue jsondec_int(jsondec* d, const upb_FieldDef* f) {
upb_MessageValue val;
switch (jsondec_peek(d)) {
case JD_NUMBER: {
double dbl = jsondec_number(d);
if (dbl > 9223372036854774784.0 || dbl < -9223372036854775808.0) {
jsondec_err(d, "JSON number is out of range.");
}
val.int64_val = dbl; /* must be guarded, overflow here is UB */
if (val.int64_val != dbl) {
jsondec_errf(d, "JSON number was not integral (%f != %" PRId64 ")", dbl,
val.int64_val);
}
break;
}
case JD_STRING: {
upb_StringView str = jsondec_string(d);
val.int64_val = jsondec_strtoint64(d, str);
break;
}
default:
jsondec_err(d, "Expected number or string");
}
if (upb_FieldDef_CType(f) == kUpb_CType_Int32 ||
upb_FieldDef_CType(f) == kUpb_CType_Enum) {
if (val.int64_val > INT32_MAX || val.int64_val < INT32_MIN) {
jsondec_err(d, "Integer out of range.");
}
val.int32_val = (int32_t)val.int64_val;
}
return val;
}
/* Parse UINT32 or UINT64 value. */
static upb_MessageValue jsondec_uint(jsondec* d, const upb_FieldDef* f) {
upb_MessageValue val = {0};
switch (jsondec_peek(d)) {
case JD_NUMBER: {
double dbl = jsondec_number(d);
if (dbl > 18446744073709549568.0 || dbl < 0) {
jsondec_err(d, "JSON number is out of range.");
}
val.uint64_val = dbl; /* must be guarded, overflow here is UB */
if (val.uint64_val != dbl) {
jsondec_errf(d, "JSON number was not integral (%f != %" PRIu64 ")", dbl,
val.uint64_val);
}
break;
}
case JD_STRING: {
upb_StringView str = jsondec_string(d);
val.uint64_val = jsondec_strtouint64(d, str);
break;
}
default:
jsondec_err(d, "Expected number or string");
}
if (upb_FieldDef_CType(f) == kUpb_CType_UInt32) {
if (val.uint64_val > UINT32_MAX) {
jsondec_err(d, "Integer out of range.");
}
val.uint32_val = (uint32_t)val.uint64_val;
}
return val;
}
/* Parse DOUBLE or FLOAT value. */
static upb_MessageValue jsondec_double(jsondec* d, const upb_FieldDef* f) {
upb_StringView str;
upb_MessageValue val = {0};
switch (jsondec_peek(d)) {
case JD_NUMBER:
val.double_val = jsondec_number(d);
break;
case JD_STRING:
str = jsondec_string(d);
if (jsondec_streql(str, "NaN")) {
val.double_val = NAN;
} else if (jsondec_streql(str, "Infinity")) {
val.double_val = INFINITY;
} else if (jsondec_streql(str, "-Infinity")) {
val.double_val = -INFINITY;
} else {
val.double_val = strtod(str.data, NULL);
}
break;
default:
jsondec_err(d, "Expected number or string");
}
if (upb_FieldDef_CType(f) == kUpb_CType_Float) {
if (val.double_val != INFINITY && val.double_val != -INFINITY &&
(val.double_val > FLT_MAX || val.double_val < -FLT_MAX)) {
jsondec_err(d, "Float out of range");
}
val.float_val = val.double_val;
}
return val;
}
/* Parse STRING or BYTES value. */
static upb_MessageValue jsondec_strfield(jsondec* d, const upb_FieldDef* f) {
upb_MessageValue val;
val.str_val = jsondec_string(d);
if (upb_FieldDef_CType(f) == kUpb_CType_Bytes) {
val.str_val.size = jsondec_base64(d, val.str_val);
}
return val;
}
static upb_MessageValue jsondec_enum(jsondec* d, const upb_FieldDef* f) {
switch (jsondec_peek(d)) {
case JD_STRING: {
upb_StringView str = jsondec_string(d);
const upb_EnumDef* e = upb_FieldDef_EnumSubDef(f);
const upb_EnumValueDef* ev =
upb_EnumDef_FindValueByNameWithSize(e, str.data, str.size);
upb_MessageValue val;
if (ev) {
val.int32_val = upb_EnumValueDef_Number(ev);
} else {
if (d->options & upb_JsonDecode_IgnoreUnknown) {
val.int32_val = 0;
} else {
jsondec_errf(d, "Unknown enumerator: '" UPB_STRINGVIEW_FORMAT "'",
UPB_STRINGVIEW_ARGS(str));
}
}
return val;
}
case JD_NULL: {
if (jsondec_isnullvalue(f)) {
upb_MessageValue val;
jsondec_null(d);
val.int32_val = 0;
return val;
}
}
/* Fallthrough. */
default:
return jsondec_int(d, f);
}
}
static upb_MessageValue jsondec_bool(jsondec* d, const upb_FieldDef* f) {
bool is_map_key = upb_FieldDef_Number(f) == 1 &&
upb_MessageDef_IsMapEntry(upb_FieldDef_ContainingType(f));
upb_MessageValue val;
if (is_map_key) {
upb_StringView str = jsondec_string(d);
if (jsondec_streql(str, "true")) {
val.bool_val = true;
} else if (jsondec_streql(str, "false")) {
val.bool_val = false;
} else {
jsondec_err(d, "Invalid boolean map key");
}
} else {
switch (jsondec_peek(d)) {
case JD_TRUE:
val.bool_val = true;
jsondec_true(d);
break;
case JD_FALSE:
val.bool_val = false;
jsondec_false(d);
break;
default:
jsondec_err(d, "Expected true or false");
}
}
return val;
}
/* Composite types (array/message/map) ****************************************/
static void jsondec_array(jsondec* d, upb_Message* msg, const upb_FieldDef* f) {
upb_Array* arr = upb_Message_Mutable(msg, f, d->arena).array;
jsondec_arrstart(d);
while (jsondec_arrnext(d)) {
upb_MessageValue elem = jsondec_value(d, f);
upb_Array_Append(arr, elem, d->arena);
}
jsondec_arrend(d);
}
static void jsondec_map(jsondec* d, upb_Message* msg, const upb_FieldDef* f) {
upb_Map* map = upb_Message_Mutable(msg, f, d->arena).map;
const upb_MessageDef* entry = upb_FieldDef_MessageSubDef(f);
const upb_FieldDef* key_f = upb_MessageDef_FindFieldByNumber(entry, 1);
const upb_FieldDef* val_f = upb_MessageDef_FindFieldByNumber(entry, 2);
jsondec_objstart(d);
while (jsondec_objnext(d)) {
upb_MessageValue key, val;
key = jsondec_value(d, key_f);
jsondec_entrysep(d);
val = jsondec_value(d, val_f);
upb_Map_Set(map, key, val, d->arena);
}
jsondec_objend(d);
}
static void jsondec_tomsg(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
if (upb_MessageDef_WellKnownType(m) == kUpb_WellKnown_Unspecified) {
jsondec_object(d, msg, m);
} else {
jsondec_wellknown(d, msg, m);
}
}
static upb_MessageValue jsondec_msg(jsondec* d, const upb_FieldDef* f) {
const upb_MessageDef* m = upb_FieldDef_MessageSubDef(f);
upb_Message* msg = upb_Message_New(m, d->arena);
upb_MessageValue val;
jsondec_tomsg(d, msg, m);
val.msg_val = msg;
return val;
}
static void jsondec_field(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
upb_StringView name;
const upb_FieldDef* f;
const upb_FieldDef* preserved;
name = jsondec_string(d);
jsondec_entrysep(d);
if (name.size >= 2 && name.data[0] == '[' &&
name.data[name.size - 1] == ']') {
f = upb_DefPool_FindExtensionByNameWithSize(d->symtab, name.data + 1,
name.size - 2);
if (f && upb_FieldDef_ContainingType(f) != m) {
jsondec_errf(
d, "Extension %s extends message %s, but was seen in message %s",
upb_FieldDef_FullName(f),
upb_MessageDef_FullName(upb_FieldDef_ContainingType(f)),
upb_MessageDef_FullName(m));
}
} else {
f = upb_MessageDef_FindByJsonNameWithSize(m, name.data, name.size);
}
if (!f) {
if ((d->options & upb_JsonDecode_IgnoreUnknown) == 0) {
jsondec_errf(d, "No such field: " UPB_STRINGVIEW_FORMAT,
UPB_STRINGVIEW_ARGS(name));
}
jsondec_skipval(d);
return;
}
if (jsondec_peek(d) == JD_NULL && !jsondec_isvalue(f)) {
/* JSON "null" indicates a default value, so no need to set anything. */
jsondec_null(d);
return;
}
if (upb_FieldDef_RealContainingOneof(f) &&
upb_Message_WhichOneof(msg, upb_FieldDef_ContainingOneof(f))) {
jsondec_err(d, "More than one field for this oneof.");
}
preserved = d->debug_field;
d->debug_field = f;
if (upb_FieldDef_IsMap(f)) {
jsondec_map(d, msg, f);
} else if (upb_FieldDef_IsRepeated(f)) {
jsondec_array(d, msg, f);
} else if (upb_FieldDef_IsSubMessage(f)) {
upb_Message* submsg = upb_Message_Mutable(msg, f, d->arena).msg;
const upb_MessageDef* subm = upb_FieldDef_MessageSubDef(f);
jsondec_tomsg(d, submsg, subm);
} else {
upb_MessageValue val = jsondec_value(d, f);
upb_Message_Set(msg, f, val, d->arena);
}
d->debug_field = preserved;
}
static void jsondec_object(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
jsondec_objstart(d);
while (jsondec_objnext(d)) {
jsondec_field(d, msg, m);
}
jsondec_objend(d);
}
static upb_MessageValue jsondec_value(jsondec* d, const upb_FieldDef* f) {
switch (upb_FieldDef_CType(f)) {
case kUpb_CType_Bool:
return jsondec_bool(d, f);
case kUpb_CType_Float:
case kUpb_CType_Double:
return jsondec_double(d, f);
case kUpb_CType_UInt32:
case kUpb_CType_UInt64:
return jsondec_uint(d, f);
case kUpb_CType_Int32:
case kUpb_CType_Int64:
return jsondec_int(d, f);
case kUpb_CType_String:
case kUpb_CType_Bytes:
return jsondec_strfield(d, f);
case kUpb_CType_Enum:
return jsondec_enum(d, f);
case kUpb_CType_Message:
return jsondec_msg(d, f);
default:
UPB_UNREACHABLE();
}
}
/* Well-known types ***********************************************************/
static int jsondec_tsdigits(jsondec* d, const char** ptr, size_t digits,
const char* after) {
uint64_t val;
const char* p = *ptr;
const char* end = p + digits;
size_t after_len = after ? strlen(after) : 0;
UPB_ASSERT(digits <= 9); /* int can't overflow. */
if (jsondec_buftouint64(d, p, end, &val) != end ||
(after_len && memcmp(end, after, after_len) != 0)) {
jsondec_err(d, "Malformed timestamp");
}
UPB_ASSERT(val < INT_MAX);
*ptr = end + after_len;
return (int)val;
}
static int jsondec_nanos(jsondec* d, const char** ptr, const char* end) {
uint64_t nanos = 0;
const char* p = *ptr;
if (p != end && *p == '.') {
const char* nano_end = jsondec_buftouint64(d, p + 1, end, &nanos);
int digits = (int)(nano_end - p - 1);
int exp_lg10 = 9 - digits;
if (digits > 9) {
jsondec_err(d, "Too many digits for partial seconds");
}
while (exp_lg10--) nanos *= 10;
*ptr = nano_end;
}
UPB_ASSERT(nanos < INT_MAX);
return (int)nanos;
}
/* jsondec_epochdays(1970, 1, 1) == 1970-01-01 == 0. */
int jsondec_epochdays(int y, int m, int d) {
const uint32_t year_base = 4800; /* Before min year, multiple of 400. */
const uint32_t m_adj = m - 3; /* March-based month. */
const uint32_t carry = m_adj > (uint32_t)m ? 1 : 0;
const uint32_t adjust = carry ? 12 : 0;
const uint32_t y_adj = y + year_base - carry;
const uint32_t month_days = ((m_adj + adjust) * 62719 + 769) / 2048;
const uint32_t leap_days = y_adj / 4 - y_adj / 100 + y_adj / 400;
return y_adj * 365 + leap_days + month_days + (d - 1) - 2472632;
}
static int64_t jsondec_unixtime(int y, int m, int d, int h, int min, int s) {
return (int64_t)jsondec_epochdays(y, m, d) * 86400 + h * 3600 + min * 60 + s;
}
static void jsondec_timestamp(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
upb_MessageValue seconds;
upb_MessageValue nanos;
upb_StringView str = jsondec_string(d);
const char* ptr = str.data;
const char* end = ptr + str.size;
if (str.size < 20) goto malformed;
{
/* 1972-01-01T01:00:00 */
int year = jsondec_tsdigits(d, &ptr, 4, "-");
int mon = jsondec_tsdigits(d, &ptr, 2, "-");
int day = jsondec_tsdigits(d, &ptr, 2, "T");
int hour = jsondec_tsdigits(d, &ptr, 2, ":");
int min = jsondec_tsdigits(d, &ptr, 2, ":");
int sec = jsondec_tsdigits(d, &ptr, 2, NULL);
seconds.int64_val = jsondec_unixtime(year, mon, day, hour, min, sec);
}
nanos.int32_val = jsondec_nanos(d, &ptr, end);
{
/* [+-]08:00 or Z */
int ofs_hour = 0;
int ofs_min = 0;
bool neg = false;
if (ptr == end) goto malformed;
switch (*ptr++) {
case '-':
neg = true;
/* fallthrough */
case '+':
if ((end - ptr) != 5) goto malformed;
ofs_hour = jsondec_tsdigits(d, &ptr, 2, ":");
ofs_min = jsondec_tsdigits(d, &ptr, 2, NULL);
ofs_min = ((ofs_hour * 60) + ofs_min) * 60;
seconds.int64_val += (neg ? ofs_min : -ofs_min);
break;
case 'Z':
if (ptr != end) goto malformed;
break;
default:
goto malformed;
}
}
if (seconds.int64_val < -62135596800) {
jsondec_err(d, "Timestamp out of range");
}
upb_Message_Set(msg, upb_MessageDef_FindFieldByNumber(m, 1), seconds,
d->arena);
upb_Message_Set(msg, upb_MessageDef_FindFieldByNumber(m, 2), nanos, d->arena);
return;
malformed:
jsondec_err(d, "Malformed timestamp");
}
static void jsondec_duration(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
upb_MessageValue seconds;
upb_MessageValue nanos;
upb_StringView str = jsondec_string(d);
const char* ptr = str.data;
const char* end = ptr + str.size;
const int64_t max = (uint64_t)3652500 * 86400;
/* "3.000000001s", "3s", etc. */
ptr = jsondec_buftoint64(d, ptr, end, &seconds.int64_val);
nanos.int32_val = jsondec_nanos(d, &ptr, end);
if (end - ptr != 1 || *ptr != 's') {
jsondec_err(d, "Malformed duration");
}
if (seconds.int64_val < -max || seconds.int64_val > max) {
jsondec_err(d, "Duration out of range");
}
if (seconds.int64_val < 0) {
nanos.int32_val = -nanos.int32_val;
}
upb_Message_Set(msg, upb_MessageDef_FindFieldByNumber(m, 1), seconds,
d->arena);
upb_Message_Set(msg, upb_MessageDef_FindFieldByNumber(m, 2), nanos, d->arena);
}
static void jsondec_listvalue(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
const upb_FieldDef* values_f = upb_MessageDef_FindFieldByNumber(m, 1);
const upb_MessageDef* value_m = upb_FieldDef_MessageSubDef(values_f);
upb_Array* values = upb_Message_Mutable(msg, values_f, d->arena).array;
jsondec_arrstart(d);
while (jsondec_arrnext(d)) {
upb_Message* value_msg = upb_Message_New(value_m, d->arena);
upb_MessageValue value;
value.msg_val = value_msg;
upb_Array_Append(values, value, d->arena);
jsondec_wellknownvalue(d, value_msg, value_m);
}
jsondec_arrend(d);
}
static void jsondec_struct(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
const upb_FieldDef* fields_f = upb_MessageDef_FindFieldByNumber(m, 1);
const upb_MessageDef* entry_m = upb_FieldDef_MessageSubDef(fields_f);
const upb_FieldDef* value_f = upb_MessageDef_FindFieldByNumber(entry_m, 2);
const upb_MessageDef* value_m = upb_FieldDef_MessageSubDef(value_f);
upb_Map* fields = upb_Message_Mutable(msg, fields_f, d->arena).map;
jsondec_objstart(d);
while (jsondec_objnext(d)) {
upb_MessageValue key, value;
upb_Message* value_msg = upb_Message_New(value_m, d->arena);
key.str_val = jsondec_string(d);
value.msg_val = value_msg;
upb_Map_Set(fields, key, value, d->arena);
jsondec_entrysep(d);
jsondec_wellknownvalue(d, value_msg, value_m);
}
jsondec_objend(d);
}
static void jsondec_wellknownvalue(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
upb_MessageValue val;
const upb_FieldDef* f;
upb_Message* submsg;
switch (jsondec_peek(d)) {
case JD_NUMBER:
/* double number_value = 2; */
f = upb_MessageDef_FindFieldByNumber(m, 2);
val.double_val = jsondec_number(d);
break;
case JD_STRING:
/* string string_value = 3; */
f = upb_MessageDef_FindFieldByNumber(m, 3);
val.str_val = jsondec_string(d);
break;
case JD_FALSE:
/* bool bool_value = 4; */
f = upb_MessageDef_FindFieldByNumber(m, 4);
val.bool_val = false;
jsondec_false(d);
break;
case JD_TRUE:
/* bool bool_value = 4; */
f = upb_MessageDef_FindFieldByNumber(m, 4);
val.bool_val = true;
jsondec_true(d);
break;
case JD_NULL:
/* NullValue null_value = 1; */
f = upb_MessageDef_FindFieldByNumber(m, 1);
val.int32_val = 0;
jsondec_null(d);
break;
/* Note: these cases return, because upb_Message_Mutable() is enough. */
case JD_OBJECT:
/* Struct struct_value = 5; */
f = upb_MessageDef_FindFieldByNumber(m, 5);
submsg = upb_Message_Mutable(msg, f, d->arena).msg;
jsondec_struct(d, submsg, upb_FieldDef_MessageSubDef(f));
return;
case JD_ARRAY:
/* ListValue list_value = 6; */
f = upb_MessageDef_FindFieldByNumber(m, 6);
submsg = upb_Message_Mutable(msg, f, d->arena).msg;
jsondec_listvalue(d, submsg, upb_FieldDef_MessageSubDef(f));
return;
default:
UPB_UNREACHABLE();
}
upb_Message_Set(msg, f, val, d->arena);
}
static upb_StringView jsondec_mask(jsondec* d, const char* buf,
const char* end) {
/* FieldMask fields grow due to inserted '_' characters, so we can't do the
* transform in place. */
const char* ptr = buf;
upb_StringView ret;
char* out;
ret.size = end - ptr;
while (ptr < end) {
ret.size += (*ptr >= 'A' && *ptr <= 'Z');
ptr++;
}
out = upb_Arena_Malloc(d->arena, ret.size);
ptr = buf;
ret.data = out;
while (ptr < end) {
char ch = *ptr++;
if (ch >= 'A' && ch <= 'Z') {
*out++ = '_';
*out++ = ch + 32;
} else if (ch == '_') {
jsondec_err(d, "field mask may not contain '_'");
} else {
*out++ = ch;
}
}
return ret;
}
static void jsondec_fieldmask(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
/* repeated string paths = 1; */
const upb_FieldDef* paths_f = upb_MessageDef_FindFieldByNumber(m, 1);
upb_Array* arr = upb_Message_Mutable(msg, paths_f, d->arena).array;
upb_StringView str = jsondec_string(d);
const char* ptr = str.data;
const char* end = ptr + str.size;
upb_MessageValue val;
while (ptr < end) {
const char* elem_end = memchr(ptr, ',', end - ptr);
if (elem_end) {
val.str_val = jsondec_mask(d, ptr, elem_end);
ptr = elem_end + 1;
} else {
val.str_val = jsondec_mask(d, ptr, end);
ptr = end;
}
upb_Array_Append(arr, val, d->arena);
}
}
static void jsondec_anyfield(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
if (upb_MessageDef_WellKnownType(m) == kUpb_WellKnown_Unspecified) {
/* For regular types: {"@type": "[user type]", "f1": <V1>, "f2": <V2>}
* where f1, f2, etc. are the normal fields of this type. */
jsondec_field(d, msg, m);
} else {
/* For well-known types: {"@type": "[well-known type]", "value": <X>}
* where <X> is whatever encoding the WKT normally uses. */
upb_StringView str = jsondec_string(d);
jsondec_entrysep(d);
if (!jsondec_streql(str, "value")) {
jsondec_err(d, "Key for well-known type must be 'value'");
}
jsondec_wellknown(d, msg, m);
}
}
static const upb_MessageDef* jsondec_typeurl(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
const upb_FieldDef* type_url_f = upb_MessageDef_FindFieldByNumber(m, 1);
const upb_MessageDef* type_m;
upb_StringView type_url = jsondec_string(d);
const char* end = type_url.data + type_url.size;
const char* ptr = end;
upb_MessageValue val;
val.str_val = type_url;
upb_Message_Set(msg, type_url_f, val, d->arena);
/* Find message name after the last '/' */
while (ptr > type_url.data && *--ptr != '/') {
}
if (ptr == type_url.data || ptr == end) {
jsondec_err(d, "Type url must have at least one '/' and non-empty host");
}
ptr++;
type_m = upb_DefPool_FindMessageByNameWithSize(d->symtab, ptr, end - ptr);
if (!type_m) {
jsondec_err(d, "Type was not found");
}
return type_m;
}
static void jsondec_any(jsondec* d, upb_Message* msg, const upb_MessageDef* m) {
/* string type_url = 1;
* bytes value = 2; */
const upb_FieldDef* value_f = upb_MessageDef_FindFieldByNumber(m, 2);
upb_Message* any_msg;
const upb_MessageDef* any_m = NULL;
const char* pre_type_data = NULL;
const char* pre_type_end = NULL;
upb_MessageValue encoded;
jsondec_objstart(d);
/* Scan looking for "@type", which is not necessarily first. */
while (!any_m && jsondec_objnext(d)) {
const char* start = d->ptr;
upb_StringView name = jsondec_string(d);
jsondec_entrysep(d);
if (jsondec_streql(name, "@type")) {
any_m = jsondec_typeurl(d, msg, m);
if (pre_type_data) {
pre_type_end = start;
while (*pre_type_end != ',') pre_type_end--;
}
} else {
if (!pre_type_data) pre_type_data = start;
jsondec_skipval(d);
}
}
if (!any_m) {
jsondec_err(d, "Any object didn't contain a '@type' field");
}
any_msg = upb_Message_New(any_m, d->arena);
if (pre_type_data) {
size_t len = pre_type_end - pre_type_data + 1;
char* tmp = upb_Arena_Malloc(d->arena, len);
const char* saved_ptr = d->ptr;
const char* saved_end = d->end;
memcpy(tmp, pre_type_data, len - 1);
tmp[len - 1] = '}';
d->ptr = tmp;
d->end = tmp + len;
d->is_first = true;
while (jsondec_objnext(d)) {
jsondec_anyfield(d, any_msg, any_m);
}
d->ptr = saved_ptr;
d->end = saved_end;
}
while (jsondec_objnext(d)) {
jsondec_anyfield(d, any_msg, any_m);
}
jsondec_objend(d);
encoded.str_val.data = upb_Encode(any_msg, upb_MessageDef_MiniTable(any_m), 0,
d->arena, &encoded.str_val.size);
upb_Message_Set(msg, value_f, encoded, d->arena);
}
static void jsondec_wrapper(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
const upb_FieldDef* value_f = upb_MessageDef_FindFieldByNumber(m, 1);
upb_MessageValue val = jsondec_value(d, value_f);
upb_Message_Set(msg, value_f, val, d->arena);
}
static void jsondec_wellknown(jsondec* d, upb_Message* msg,
const upb_MessageDef* m) {
switch (upb_MessageDef_WellKnownType(m)) {
case kUpb_WellKnown_Any:
jsondec_any(d, msg, m);
break;
case kUpb_WellKnown_FieldMask:
jsondec_fieldmask(d, msg, m);
break;
case kUpb_WellKnown_Duration:
jsondec_duration(d, msg, m);
break;
case kUpb_WellKnown_Timestamp:
jsondec_timestamp(d, msg, m);
break;
case kUpb_WellKnown_Value:
jsondec_wellknownvalue(d, msg, m);
break;
case kUpb_WellKnown_ListValue:
jsondec_listvalue(d, msg, m);
break;
case kUpb_WellKnown_Struct:
jsondec_struct(d, msg, m);
break;
case kUpb_WellKnown_DoubleValue:
case kUpb_WellKnown_FloatValue:
case kUpb_WellKnown_Int64Value:
case kUpb_WellKnown_UInt64Value:
case kUpb_WellKnown_Int32Value:
case kUpb_WellKnown_UInt32Value:
case kUpb_WellKnown_StringValue:
case kUpb_WellKnown_BytesValue:
case kUpb_WellKnown_BoolValue:
jsondec_wrapper(d, msg, m);
break;
default:
UPB_UNREACHABLE();
}
}
bool upb_JsonDecode(const char* buf, size_t size, upb_Message* msg,
const upb_MessageDef* m, const upb_DefPool* symtab,
int options, upb_Arena* arena, upb_Status* status) {
jsondec d;
if (size == 0) return true;
d.ptr = buf;
d.end = buf + size;
d.arena = arena;
d.symtab = symtab;
d.status = status;
d.options = options;
d.depth = 64;
d.line = 1;
d.line_begin = d.ptr;
d.debug_field = NULL;
d.is_first = false;
if (UPB_SETJMP(d.err)) return false;
jsondec_tomsg(&d, msg, m);
return true;
}
/** upb/json_encode.c ************************************************************/
#include <ctype.h>
#include <float.h>
#include <inttypes.h>
#include <math.h>
#include <setjmp.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
/* Must be last. */
typedef struct {
char *buf, *ptr, *end;
size_t overflow;
int indent_depth;
int options;
const upb_DefPool* ext_pool;
jmp_buf err;
upb_Status* status;
upb_Arena* arena;
} jsonenc;
static void jsonenc_msg(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m);
static void jsonenc_scalar(jsonenc* e, upb_MessageValue val,
const upb_FieldDef* f);
static void jsonenc_msgfield(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m);
static void jsonenc_msgfields(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m, bool first);
static void jsonenc_value(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m);
UPB_NORETURN static void jsonenc_err(jsonenc* e, const char* msg) {
upb_Status_SetErrorMessage(e->status, msg);
longjmp(e->err, 1);
}
UPB_PRINTF(2, 3)
UPB_NORETURN static void jsonenc_errf(jsonenc* e, const char* fmt, ...) {
va_list argp;
va_start(argp, fmt);
upb_Status_VSetErrorFormat(e->status, fmt, argp);
va_end(argp);
longjmp(e->err, 1);
}
static upb_Arena* jsonenc_arena(jsonenc* e) {
/* Create lazily, since it's only needed for Any */
if (!e->arena) {
e->arena = upb_Arena_New();
}
return e->arena;
}
static void jsonenc_putbytes(jsonenc* e, const void* data, size_t len) {
size_t have = e->end - e->ptr;
if (UPB_LIKELY(have >= len)) {
memcpy(e->ptr, data, len);
e->ptr += len;
} else {
if (have) {
memcpy(e->ptr, data, have);
e->ptr += have;
}
e->overflow += (len - have);
}
}
static void jsonenc_putstr(jsonenc* e, const char* str) {
jsonenc_putbytes(e, str, strlen(str));
}
UPB_PRINTF(2, 3)
static void jsonenc_printf(jsonenc* e, const char* fmt, ...) {
size_t n;
size_t have = e->end - e->ptr;
va_list args;
va_start(args, fmt);
n = _upb_vsnprintf(e->ptr, have, fmt, args);
va_end(args);
if (UPB_LIKELY(have > n)) {
e->ptr += n;
} else {
e->ptr = UPB_PTRADD(e->ptr, have);
e->overflow += (n - have);
}
}
static void jsonenc_nanos(jsonenc* e, int32_t nanos) {
int digits = 9;
if (nanos == 0) return;
if (nanos < 0 || nanos >= 1000000000) {
jsonenc_err(e, "error formatting timestamp as JSON: invalid nanos");
}
while (nanos % 1000 == 0) {
nanos /= 1000;
digits -= 3;
}
jsonenc_printf(e, ".%.*" PRId32, digits, nanos);
}
static void jsonenc_timestamp(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m) {
const upb_FieldDef* seconds_f = upb_MessageDef_FindFieldByNumber(m, 1);
const upb_FieldDef* nanos_f = upb_MessageDef_FindFieldByNumber(m, 2);
int64_t seconds = upb_Message_Get(msg, seconds_f).int64_val;
int32_t nanos = upb_Message_Get(msg, nanos_f).int32_val;
int L, N, I, J, K, hour, min, sec;
if (seconds < -62135596800) {
jsonenc_err(e,
"error formatting timestamp as JSON: minimum acceptable value "
"is 0001-01-01T00:00:00Z");
} else if (seconds > 253402300799) {
jsonenc_err(e,
"error formatting timestamp as JSON: maximum acceptable value "
"is 9999-12-31T23:59:59Z");
}
/* Julian Day -> Y/M/D, Algorithm from:
* Fliegel, H. F., and Van Flandern, T. C., "A Machine Algorithm for
* Processing Calendar Dates," Communications of the Association of
* Computing Machines, vol. 11 (1968), p. 657. */
seconds += 62135596800; // Ensure seconds is positive.
L = (int)(seconds / 86400) - 719162 + 68569 + 2440588;
N = 4 * L / 146097;
L = L - (146097 * N + 3) / 4;
I = 4000 * (L + 1) / 1461001;
L = L - 1461 * I / 4 + 31;
J = 80 * L / 2447;
K = L - 2447 * J / 80;
L = J / 11;
J = J + 2 - 12 * L;
I = 100 * (N - 49) + I + L;
sec = seconds % 60;
min = (seconds / 60) % 60;
hour = (seconds / 3600) % 24;
jsonenc_printf(e, "\"%04d-%02d-%02dT%02d:%02d:%02d", I, J, K, hour, min, sec);
jsonenc_nanos(e, nanos);
jsonenc_putstr(e, "Z\"");
}
static void jsonenc_duration(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m) {
const upb_FieldDef* seconds_f = upb_MessageDef_FindFieldByNumber(m, 1);
const upb_FieldDef* nanos_f = upb_MessageDef_FindFieldByNumber(m, 2);
int64_t seconds = upb_Message_Get(msg, seconds_f).int64_val;
int32_t nanos = upb_Message_Get(msg, nanos_f).int32_val;
if (seconds > 315576000000 || seconds < -315576000000 ||
(seconds < 0) != (nanos < 0)) {
jsonenc_err(e, "bad duration");
}
if (nanos < 0) {
nanos = -nanos;
}
jsonenc_printf(e, "\"%" PRId64, seconds);
jsonenc_nanos(e, nanos);
jsonenc_putstr(e, "s\"");
}
static void jsonenc_enum(int32_t val, const upb_FieldDef* f, jsonenc* e) {
const upb_EnumDef* e_def = upb_FieldDef_EnumSubDef(f);
if (strcmp(upb_EnumDef_FullName(e_def), "google.protobuf.NullValue") == 0) {
jsonenc_putstr(e, "null");
} else {
const upb_EnumValueDef* ev = upb_EnumDef_FindValueByNumber(e_def, val);
if (ev) {
jsonenc_printf(e, "\"%s\"", upb_EnumValueDef_Name(ev));
} else {
jsonenc_printf(e, "%" PRId32, val);
}
}
}
static void jsonenc_bytes(jsonenc* e, upb_StringView str) {
/* This is the regular base64, not the "web-safe" version. */
static const char base64[] =
"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
const unsigned char* ptr = (unsigned char*)str.data;
const unsigned char* end = UPB_PTRADD(ptr, str.size);
char buf[4];
jsonenc_putstr(e, "\"");
while (end - ptr >= 3) {
buf[0] = base64[ptr[0] >> 2];
buf[1] = base64[((ptr[0] & 0x3) << 4) | (ptr[1] >> 4)];
buf[2] = base64[((ptr[1] & 0xf) << 2) | (ptr[2] >> 6)];
buf[3] = base64[ptr[2] & 0x3f];
jsonenc_putbytes(e, buf, 4);
ptr += 3;
}
switch (end - ptr) {
case 2:
buf[0] = base64[ptr[0] >> 2];
buf[1] = base64[((ptr[0] & 0x3) << 4) | (ptr[1] >> 4)];
buf[2] = base64[(ptr[1] & 0xf) << 2];
buf[3] = '=';
jsonenc_putbytes(e, buf, 4);
break;
case 1:
buf[0] = base64[ptr[0] >> 2];
buf[1] = base64[((ptr[0] & 0x3) << 4)];
buf[2] = '=';
buf[3] = '=';
jsonenc_putbytes(e, buf, 4);
break;
}
jsonenc_putstr(e, "\"");
}
static void jsonenc_stringbody(jsonenc* e, upb_StringView str) {
const char* ptr = str.data;
const char* end = UPB_PTRADD(ptr, str.size);
while (ptr < end) {
switch (*ptr) {
case '\n':
jsonenc_putstr(e, "\\n");
break;
case '\r':
jsonenc_putstr(e, "\\r");
break;
case '\t':
jsonenc_putstr(e, "\\t");
break;
case '\"':
jsonenc_putstr(e, "\\\"");
break;
case '\f':
jsonenc_putstr(e, "\\f");
break;
case '\b':
jsonenc_putstr(e, "\\b");
break;
case '\\':
jsonenc_putstr(e, "\\\\");
break;
default:
if ((uint8_t)*ptr < 0x20) {
jsonenc_printf(e, "\\u%04x", (int)(uint8_t)*ptr);
} else {
/* This could be a non-ASCII byte. We rely on the string being valid
* UTF-8. */
jsonenc_putbytes(e, ptr, 1);
}
break;
}
ptr++;
}
}
static void jsonenc_string(jsonenc* e, upb_StringView str) {
jsonenc_putstr(e, "\"");
jsonenc_stringbody(e, str);
jsonenc_putstr(e, "\"");
}
static bool upb_JsonEncode_HandleSpecialDoubles(jsonenc* e, double val) {
if (val == INFINITY) {
jsonenc_putstr(e, "\"Infinity\"");
} else if (val == -INFINITY) {
jsonenc_putstr(e, "\"-Infinity\"");
} else if (val != val) {
jsonenc_putstr(e, "\"NaN\"");
} else {
return false;
}
return true;
}
static void upb_JsonEncode_Double(jsonenc* e, double val) {
if (upb_JsonEncode_HandleSpecialDoubles(e, val)) return;
char buf[32];
_upb_EncodeRoundTripDouble(val, buf, sizeof(buf));
jsonenc_putstr(e, buf);
}
static void upb_JsonEncode_Float(jsonenc* e, float val) {
if (upb_JsonEncode_HandleSpecialDoubles(e, val)) return;
char buf[32];
_upb_EncodeRoundTripFloat(val, buf, sizeof(buf));
jsonenc_putstr(e, buf);
}
static void jsonenc_wrapper(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m) {
const upb_FieldDef* val_f = upb_MessageDef_FindFieldByNumber(m, 1);
upb_MessageValue val = upb_Message_Get(msg, val_f);
jsonenc_scalar(e, val, val_f);
}
static const upb_MessageDef* jsonenc_getanymsg(jsonenc* e,
upb_StringView type_url) {
/* Find last '/', if any. */
const char* end = type_url.data + type_url.size;
const char* ptr = end;
const upb_MessageDef* ret;
if (!e->ext_pool) {
jsonenc_err(e, "Tried to encode Any, but no symtab was provided");
}
if (type_url.size == 0) goto badurl;
while (true) {
if (--ptr == type_url.data) {
/* Type URL must contain at least one '/', with host before. */
goto badurl;
}
if (*ptr == '/') {
ptr++;
break;
}
}
ret = upb_DefPool_FindMessageByNameWithSize(e->ext_pool, ptr, end - ptr);
if (!ret) {
jsonenc_errf(e, "Couldn't find Any type: %.*s", (int)(end - ptr), ptr);
}
return ret;
badurl:
jsonenc_errf(e, "Bad type URL: " UPB_STRINGVIEW_FORMAT,
UPB_STRINGVIEW_ARGS(type_url));
}
static void jsonenc_any(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m) {
const upb_FieldDef* type_url_f = upb_MessageDef_FindFieldByNumber(m, 1);
const upb_FieldDef* value_f = upb_MessageDef_FindFieldByNumber(m, 2);
upb_StringView type_url = upb_Message_Get(msg, type_url_f).str_val;
upb_StringView value = upb_Message_Get(msg, value_f).str_val;
const upb_MessageDef* any_m = jsonenc_getanymsg(e, type_url);
const upb_MiniTable* any_layout = upb_MessageDef_MiniTable(any_m);
upb_Arena* arena = jsonenc_arena(e);
upb_Message* any = upb_Message_New(any_m, arena);
if (upb_Decode(value.data, value.size, any, any_layout, NULL, 0, arena) !=
kUpb_DecodeStatus_Ok) {
jsonenc_err(e, "Error decoding message in Any");
}
jsonenc_putstr(e, "{\"@type\":");
jsonenc_string(e, type_url);
if (upb_MessageDef_WellKnownType(any_m) == kUpb_WellKnown_Unspecified) {
/* Regular messages: {"@type": "...","foo": 1, "bar": 2} */
jsonenc_msgfields(e, any, any_m, false);
} else {
/* Well-known type: {"@type": "...","value": <well-known encoding>} */
jsonenc_putstr(e, ",\"value\":");
jsonenc_msgfield(e, any, any_m);
}
jsonenc_putstr(e, "}");
}
static void jsonenc_putsep(jsonenc* e, const char* str, bool* first) {
if (*first) {
*first = false;
} else {
jsonenc_putstr(e, str);
}
}
static void jsonenc_fieldpath(jsonenc* e, upb_StringView path) {
const char* ptr = path.data;
const char* end = ptr + path.size;
while (ptr < end) {
char ch = *ptr;
if (ch >= 'A' && ch <= 'Z') {
jsonenc_err(e, "Field mask element may not have upper-case letter.");
} else if (ch == '_') {
if (ptr == end - 1 || *(ptr + 1) < 'a' || *(ptr + 1) > 'z') {
jsonenc_err(e, "Underscore must be followed by a lowercase letter.");
}
ch = *++ptr - 32;
}
jsonenc_putbytes(e, &ch, 1);
ptr++;
}
}
static void jsonenc_fieldmask(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m) {
const upb_FieldDef* paths_f = upb_MessageDef_FindFieldByNumber(m, 1);
const upb_Array* paths = upb_Message_Get(msg, paths_f).array_val;
bool first = true;
size_t i, n = 0;
if (paths) n = upb_Array_Size(paths);
jsonenc_putstr(e, "\"");
for (i = 0; i < n; i++) {
jsonenc_putsep(e, ",", &first);
jsonenc_fieldpath(e, upb_Array_Get(paths, i).str_val);
}
jsonenc_putstr(e, "\"");
}
static void jsonenc_struct(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m) {
const upb_FieldDef* fields_f = upb_MessageDef_FindFieldByNumber(m, 1);
const upb_Map* fields = upb_Message_Get(msg, fields_f).map_val;
const upb_MessageDef* entry_m = upb_FieldDef_MessageSubDef(fields_f);
const upb_FieldDef* value_f = upb_MessageDef_FindFieldByNumber(entry_m, 2);
size_t iter = kUpb_Map_Begin;
bool first = true;
jsonenc_putstr(e, "{");
if (fields) {
while (upb_MapIterator_Next(fields, &iter)) {
upb_MessageValue key = upb_MapIterator_Key(fields, iter);
upb_MessageValue val = upb_MapIterator_Value(fields, iter);
jsonenc_putsep(e, ",", &first);
jsonenc_string(e, key.str_val);
jsonenc_putstr(e, ":");
jsonenc_value(e, val.msg_val, upb_FieldDef_MessageSubDef(value_f));
}
}
jsonenc_putstr(e, "}");
}
static void jsonenc_listvalue(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m) {
const upb_FieldDef* values_f = upb_MessageDef_FindFieldByNumber(m, 1);
const upb_MessageDef* values_m = upb_FieldDef_MessageSubDef(values_f);
const upb_Array* values = upb_Message_Get(msg, values_f).array_val;
size_t i;
bool first = true;
jsonenc_putstr(e, "[");
if (values) {
const size_t size = upb_Array_Size(values);
for (i = 0; i < size; i++) {
upb_MessageValue elem = upb_Array_Get(values, i);
jsonenc_putsep(e, ",", &first);
jsonenc_value(e, elem.msg_val, values_m);
}
}
jsonenc_putstr(e, "]");
}
static void jsonenc_value(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m) {
/* TODO(haberman): do we want a reflection method to get oneof case? */
size_t iter = kUpb_Message_Begin;
const upb_FieldDef* f;
upb_MessageValue val;
if (!upb_Message_Next(msg, m, NULL, &f, &val, &iter)) {
jsonenc_err(e, "No value set in Value proto");
}
switch (upb_FieldDef_Number(f)) {
case 1:
jsonenc_putstr(e, "null");
break;
case 2:
upb_JsonEncode_Double(e, val.double_val);
break;
case 3:
jsonenc_string(e, val.str_val);
break;
case 4:
jsonenc_putstr(e, val.bool_val ? "true" : "false");
break;
case 5:
jsonenc_struct(e, val.msg_val, upb_FieldDef_MessageSubDef(f));
break;
case 6:
jsonenc_listvalue(e, val.msg_val, upb_FieldDef_MessageSubDef(f));
break;
}
}
static void jsonenc_msgfield(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m) {
switch (upb_MessageDef_WellKnownType(m)) {
case kUpb_WellKnown_Unspecified:
jsonenc_msg(e, msg, m);
break;
case kUpb_WellKnown_Any:
jsonenc_any(e, msg, m);
break;
case kUpb_WellKnown_FieldMask:
jsonenc_fieldmask(e, msg, m);
break;
case kUpb_WellKnown_Duration:
jsonenc_duration(e, msg, m);
break;
case kUpb_WellKnown_Timestamp:
jsonenc_timestamp(e, msg, m);
break;
case kUpb_WellKnown_DoubleValue:
case kUpb_WellKnown_FloatValue:
case kUpb_WellKnown_Int64Value:
case kUpb_WellKnown_UInt64Value:
case kUpb_WellKnown_Int32Value:
case kUpb_WellKnown_UInt32Value:
case kUpb_WellKnown_StringValue:
case kUpb_WellKnown_BytesValue:
case kUpb_WellKnown_BoolValue:
jsonenc_wrapper(e, msg, m);
break;
case kUpb_WellKnown_Value:
jsonenc_value(e, msg, m);
break;
case kUpb_WellKnown_ListValue:
jsonenc_listvalue(e, msg, m);
break;
case kUpb_WellKnown_Struct:
jsonenc_struct(e, msg, m);
break;
}
}
static void jsonenc_scalar(jsonenc* e, upb_MessageValue val,
const upb_FieldDef* f) {
switch (upb_FieldDef_CType(f)) {
case kUpb_CType_Bool:
jsonenc_putstr(e, val.bool_val ? "true" : "false");
break;
case kUpb_CType_Float:
upb_JsonEncode_Float(e, val.float_val);
break;
case kUpb_CType_Double:
upb_JsonEncode_Double(e, val.double_val);
break;
case kUpb_CType_Int32:
jsonenc_printf(e, "%" PRId32, val.int32_val);
break;
case kUpb_CType_UInt32:
jsonenc_printf(e, "%" PRIu32, val.uint32_val);
break;
case kUpb_CType_Int64:
jsonenc_printf(e, "\"%" PRId64 "\"", val.int64_val);
break;
case kUpb_CType_UInt64:
jsonenc_printf(e, "\"%" PRIu64 "\"", val.uint64_val);
break;
case kUpb_CType_String:
jsonenc_string(e, val.str_val);
break;
case kUpb_CType_Bytes:
jsonenc_bytes(e, val.str_val);
break;
case kUpb_CType_Enum:
jsonenc_enum(val.int32_val, f, e);
break;
case kUpb_CType_Message:
jsonenc_msgfield(e, val.msg_val, upb_FieldDef_MessageSubDef(f));
break;
}
}
static void jsonenc_mapkey(jsonenc* e, upb_MessageValue val,
const upb_FieldDef* f) {
jsonenc_putstr(e, "\"");
switch (upb_FieldDef_CType(f)) {
case kUpb_CType_Bool:
jsonenc_putstr(e, val.bool_val ? "true" : "false");
break;
case kUpb_CType_Int32:
jsonenc_printf(e, "%" PRId32, val.int32_val);
break;
case kUpb_CType_UInt32:
jsonenc_printf(e, "%" PRIu32, val.uint32_val);
break;
case kUpb_CType_Int64:
jsonenc_printf(e, "%" PRId64, val.int64_val);
break;
case kUpb_CType_UInt64:
jsonenc_printf(e, "%" PRIu64, val.uint64_val);
break;
case kUpb_CType_String:
jsonenc_stringbody(e, val.str_val);
break;
default:
UPB_UNREACHABLE();
}
jsonenc_putstr(e, "\":");
}
static void jsonenc_array(jsonenc* e, const upb_Array* arr,
const upb_FieldDef* f) {
size_t i;
size_t size = arr ? upb_Array_Size(arr) : 0;
bool first = true;
jsonenc_putstr(e, "[");
for (i = 0; i < size; i++) {
jsonenc_putsep(e, ",", &first);
jsonenc_scalar(e, upb_Array_Get(arr, i), f);
}
jsonenc_putstr(e, "]");
}
static void jsonenc_map(jsonenc* e, const upb_Map* map, const upb_FieldDef* f) {
const upb_MessageDef* entry = upb_FieldDef_MessageSubDef(f);
const upb_FieldDef* key_f = upb_MessageDef_FindFieldByNumber(entry, 1);
const upb_FieldDef* val_f = upb_MessageDef_FindFieldByNumber(entry, 2);
size_t iter = kUpb_Map_Begin;
bool first = true;
jsonenc_putstr(e, "{");
if (map) {
while (upb_MapIterator_Next(map, &iter)) {
jsonenc_putsep(e, ",", &first);
jsonenc_mapkey(e, upb_MapIterator_Key(map, iter), key_f);
jsonenc_scalar(e, upb_MapIterator_Value(map, iter), val_f);
}
}
jsonenc_putstr(e, "}");
}
static void jsonenc_fieldval(jsonenc* e, const upb_FieldDef* f,
upb_MessageValue val, bool* first) {
const char* name;
jsonenc_putsep(e, ",", first);
if (upb_FieldDef_IsExtension(f)) {
// TODO: For MessageSet, I would have expected this to print the message
// name here, but Python doesn't appear to do this. We should do more
// research here about what various implementations do.
jsonenc_printf(e, "\"[%s]\":", upb_FieldDef_FullName(f));
} else {
if (e->options & upb_JsonEncode_UseProtoNames) {
name = upb_FieldDef_Name(f);
} else {
name = upb_FieldDef_JsonName(f);
}
jsonenc_printf(e, "\"%s\":", name);
}
if (upb_FieldDef_IsMap(f)) {
jsonenc_map(e, val.map_val, f);
} else if (upb_FieldDef_IsRepeated(f)) {
jsonenc_array(e, val.array_val, f);
} else {
jsonenc_scalar(e, val, f);
}
}
static void jsonenc_msgfields(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m, bool first) {
upb_MessageValue val;
const upb_FieldDef* f;
if (e->options & upb_JsonEncode_EmitDefaults) {
/* Iterate over all fields. */
int i = 0;
int n = upb_MessageDef_FieldCount(m);
for (i = 0; i < n; i++) {
f = upb_MessageDef_Field(m, i);
if (!upb_FieldDef_HasPresence(f) || upb_Message_Has(msg, f)) {
jsonenc_fieldval(e, f, upb_Message_Get(msg, f), &first);
}
}
} else {
/* Iterate over non-empty fields. */
size_t iter = kUpb_Message_Begin;
while (upb_Message_Next(msg, m, e->ext_pool, &f, &val, &iter)) {
jsonenc_fieldval(e, f, val, &first);
}
}
}
static void jsonenc_msg(jsonenc* e, const upb_Message* msg,
const upb_MessageDef* m) {
jsonenc_putstr(e, "{");
jsonenc_msgfields(e, msg, m, true);
jsonenc_putstr(e, "}");
}
static size_t jsonenc_nullz(jsonenc* e, size_t size) {
size_t ret = e->ptr - e->buf + e->overflow;
if (size > 0) {
if (e->ptr == e->end) e->ptr--;
*e->ptr = '\0';
}
return ret;
}
size_t upb_JsonEncode(const upb_Message* msg, const upb_MessageDef* m,
const upb_DefPool* ext_pool, int options, char* buf,
size_t size, upb_Status* status) {
jsonenc e;
e.buf = buf;
e.ptr = buf;
e.end = UPB_PTRADD(buf, size);
e.overflow = 0;
e.options = options;
e.ext_pool = ext_pool;
e.status = status;
e.arena = NULL;
if (setjmp(e.err)) return -1;
jsonenc_msgfield(&e, msg, m);
if (e.arena) upb_Arena_Free(e.arena);
return jsonenc_nullz(&e, size);
}
/** upb/mini_table.c ************************************************************/
#include <inttypes.h>
#include <setjmp.h>
// Must be last.
typedef enum {
kUpb_EncodedType_Double = 0,
kUpb_EncodedType_Float = 1,
kUpb_EncodedType_Fixed32 = 2,
kUpb_EncodedType_Fixed64 = 3,
kUpb_EncodedType_SFixed32 = 4,
kUpb_EncodedType_SFixed64 = 5,
kUpb_EncodedType_Int32 = 6,
kUpb_EncodedType_UInt32 = 7,
kUpb_EncodedType_SInt32 = 8,
kUpb_EncodedType_Int64 = 9,
kUpb_EncodedType_UInt64 = 10,
kUpb_EncodedType_SInt64 = 11,
kUpb_EncodedType_Enum = 12,
kUpb_EncodedType_Bool = 13,
kUpb_EncodedType_Bytes = 14,
kUpb_EncodedType_String = 15,
kUpb_EncodedType_Group = 16,
kUpb_EncodedType_Message = 17,
kUpb_EncodedType_RepeatedBase = 20,
} upb_EncodedType;
typedef enum {
kUpb_EncodedFieldModifier_FlipPacked = 1 << 0,
kUpb_EncodedFieldModifier_IsClosedEnum = 1 << 1,
// upb only.
kUpb_EncodedFieldModifier_IsProto3Singular = 1 << 2,
kUpb_EncodedFieldModifier_IsRequired = 1 << 3,
} upb_EncodedFieldModifier;
enum {
kUpb_EncodedValue_MinField = ' ',
kUpb_EncodedValue_MaxField = 'K',
kUpb_EncodedValue_MinModifier = 'L',
kUpb_EncodedValue_MaxModifier = '[',
kUpb_EncodedValue_End = '^',
kUpb_EncodedValue_MinSkip = '_',
kUpb_EncodedValue_MaxSkip = '~',
kUpb_EncodedValue_OneofSeparator = '~',
kUpb_EncodedValue_FieldSeparator = '|',
kUpb_EncodedValue_MinOneofField = ' ',
kUpb_EncodedValue_MaxOneofField = 'b',
kUpb_EncodedValue_MaxEnumMask = 'A',
};
char upb_ToBase92(int8_t ch) {
static const char kUpb_ToBase92[] = {
' ', '!', '#', '$', '%', '&', '(', ')', '*', '+', ',', '-', '.', '/',
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', ':', ';', '<', '=',
'>', '?', '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K',
'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y',
'Z', '[', ']', '^', '_', '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
'w', 'x', 'y', 'z', '{', '|', '}', '~',
};
UPB_ASSERT(0 <= ch && ch < 92);
return kUpb_ToBase92[ch];
}
char upb_FromBase92(uint8_t ch) {
static const int8_t kUpb_FromBase92[] = {
0, 1, -1, 2, 3, 4, 5, -1, 6, 7, 8, 9, 10, 11, 12, 13,
14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29,
30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45,
46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, -1, 58, 59, 60,
61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76,
77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91,
};
if (' ' > ch || ch > '~') return -1;
return kUpb_FromBase92[ch - ' '];
}
bool upb_IsTypePackable(upb_FieldType type) {
// clang-format off
static const unsigned kUnpackableTypes =
(1 << kUpb_FieldType_String) |
(1 << kUpb_FieldType_Bytes) |
(1 << kUpb_FieldType_Message) |
(1 << kUpb_FieldType_Group);
// clang-format on
return (1 << type) & ~kUnpackableTypes;
}
/** upb_MtDataEncoder *********************************************************/
typedef struct {
uint64_t present_values_mask;
uint32_t last_written_value;
} upb_MtDataEncoderInternal_EnumState;
typedef struct {
uint64_t msg_modifiers;
uint32_t last_field_num;
enum {
kUpb_OneofState_NotStarted,
kUpb_OneofState_StartedOneof,
kUpb_OneofState_EmittedOneofField,
} oneof_state;
} upb_MtDataEncoderInternal_MsgState;
typedef struct {
char* buf_start; // Only for checking kUpb_MtDataEncoder_MinSize.
union {
upb_MtDataEncoderInternal_EnumState enum_state;
upb_MtDataEncoderInternal_MsgState msg_state;
} state;
} upb_MtDataEncoderInternal;
static upb_MtDataEncoderInternal* upb_MtDataEncoder_GetInternal(
upb_MtDataEncoder* e, char* buf_start) {
UPB_ASSERT(sizeof(upb_MtDataEncoderInternal) <= sizeof(e->internal));
upb_MtDataEncoderInternal* ret = (upb_MtDataEncoderInternal*)e->internal;
ret->buf_start = buf_start;
return ret;
}
static char* upb_MtDataEncoder_Put(upb_MtDataEncoder* e, char* ptr, char ch) {
upb_MtDataEncoderInternal* in = (upb_MtDataEncoderInternal*)e->internal;
UPB_ASSERT(ptr - in->buf_start < kUpb_MtDataEncoder_MinSize);
if (ptr == e->end) return NULL;
*ptr++ = upb_ToBase92(ch);
return ptr;
}
static char* upb_MtDataEncoder_PutBase92Varint(upb_MtDataEncoder* e, char* ptr,
uint32_t val, int min, int max) {
int shift = _upb_Log2Ceiling(upb_FromBase92(max) - upb_FromBase92(min) + 1);
UPB_ASSERT(shift <= 6);
uint32_t mask = (1 << shift) - 1;
do {
uint32_t bits = val & mask;
ptr = upb_MtDataEncoder_Put(e, ptr, bits + upb_FromBase92(min));
if (!ptr) return NULL;
val >>= shift;
} while (val);
return ptr;
}
char* upb_MtDataEncoder_PutModifier(upb_MtDataEncoder* e, char* ptr,
uint64_t mod) {
if (mod) {
ptr = upb_MtDataEncoder_PutBase92Varint(e, ptr, mod,
kUpb_EncodedValue_MinModifier,
kUpb_EncodedValue_MaxModifier);
}
return ptr;
}
char* upb_MtDataEncoder_StartMessage(upb_MtDataEncoder* e, char* ptr,
uint64_t msg_mod) {
upb_MtDataEncoderInternal* in = upb_MtDataEncoder_GetInternal(e, ptr);
in->state.msg_state.msg_modifiers = msg_mod;
in->state.msg_state.last_field_num = 0;
in->state.msg_state.oneof_state = kUpb_OneofState_NotStarted;
return upb_MtDataEncoder_PutModifier(e, ptr, msg_mod);
}
char* upb_MtDataEncoder_PutField(upb_MtDataEncoder* e, char* ptr,
upb_FieldType type, uint32_t field_num,
uint64_t field_mod) {
static const char kUpb_TypeToEncoded[] = {
[kUpb_FieldType_Double] = kUpb_EncodedType_Double,
[kUpb_FieldType_Float] = kUpb_EncodedType_Float,
[kUpb_FieldType_Int64] = kUpb_EncodedType_Int64,
[kUpb_FieldType_UInt64] = kUpb_EncodedType_UInt64,
[kUpb_FieldType_Int32] = kUpb_EncodedType_Int32,
[kUpb_FieldType_Fixed64] = kUpb_EncodedType_Fixed64,
[kUpb_FieldType_Fixed32] = kUpb_EncodedType_Fixed32,
[kUpb_FieldType_Bool] = kUpb_EncodedType_Bool,
[kUpb_FieldType_String] = kUpb_EncodedType_String,
[kUpb_FieldType_Group] = kUpb_EncodedType_Group,
[kUpb_FieldType_Message] = kUpb_EncodedType_Message,
[kUpb_FieldType_Bytes] = kUpb_EncodedType_Bytes,
[kUpb_FieldType_UInt32] = kUpb_EncodedType_UInt32,
[kUpb_FieldType_Enum] = kUpb_EncodedType_Enum,
[kUpb_FieldType_SFixed32] = kUpb_EncodedType_SFixed32,
[kUpb_FieldType_SFixed64] = kUpb_EncodedType_SFixed64,
[kUpb_FieldType_SInt32] = kUpb_EncodedType_SInt32,
[kUpb_FieldType_SInt64] = kUpb_EncodedType_SInt64,
};
upb_MtDataEncoderInternal* in = upb_MtDataEncoder_GetInternal(e, ptr);
if (field_num <= in->state.msg_state.last_field_num) return NULL;
if (in->state.msg_state.last_field_num + 1 != field_num) {
// Put skip.
UPB_ASSERT(field_num > in->state.msg_state.last_field_num);
uint32_t skip = field_num - in->state.msg_state.last_field_num;
ptr = upb_MtDataEncoder_PutBase92Varint(
e, ptr, skip, kUpb_EncodedValue_MinSkip, kUpb_EncodedValue_MaxSkip);
if (!ptr) return NULL;
}
in->state.msg_state.last_field_num = field_num;
uint32_t encoded_modifiers = 0;
// Put field type.
if (type == kUpb_FieldType_Enum &&
!(field_mod & kUpb_FieldModifier_IsClosedEnum)) {
type = kUpb_FieldType_Int32;
}
int encoded_type = kUpb_TypeToEncoded[type];
if (field_mod & kUpb_FieldModifier_IsRepeated) {
// Repeated fields shift the type number up (unlike other modifiers which
// are bit flags).
encoded_type += kUpb_EncodedType_RepeatedBase;
if (upb_IsTypePackable(type)) {
bool field_is_packed = field_mod & kUpb_FieldModifier_IsPacked;
bool default_is_packed = in->state.msg_state.msg_modifiers &
kUpb_MessageModifier_DefaultIsPacked;
if (field_is_packed != default_is_packed) {
encoded_modifiers |= kUpb_EncodedFieldModifier_FlipPacked;
}
}
}
ptr = upb_MtDataEncoder_Put(e, ptr, encoded_type);
if (!ptr) return NULL;
if (field_mod & kUpb_FieldModifier_IsProto3Singular) {
encoded_modifiers |= kUpb_EncodedFieldModifier_IsProto3Singular;
}
if (field_mod & kUpb_FieldModifier_IsRequired) {
encoded_modifiers |= kUpb_EncodedFieldModifier_IsRequired;
}
return upb_MtDataEncoder_PutModifier(e, ptr, encoded_modifiers);
}
char* upb_MtDataEncoder_StartOneof(upb_MtDataEncoder* e, char* ptr) {
upb_MtDataEncoderInternal* in = upb_MtDataEncoder_GetInternal(e, ptr);
if (in->state.msg_state.oneof_state == kUpb_OneofState_NotStarted) {
ptr = upb_MtDataEncoder_Put(e, ptr, upb_FromBase92(kUpb_EncodedValue_End));
} else {
ptr = upb_MtDataEncoder_Put(
e, ptr, upb_FromBase92(kUpb_EncodedValue_OneofSeparator));
}
in->state.msg_state.oneof_state = kUpb_OneofState_StartedOneof;
return ptr;
}
char* upb_MtDataEncoder_PutOneofField(upb_MtDataEncoder* e, char* ptr,
uint32_t field_num) {
upb_MtDataEncoderInternal* in = upb_MtDataEncoder_GetInternal(e, ptr);
if (in->state.msg_state.oneof_state == kUpb_OneofState_EmittedOneofField) {
ptr = upb_MtDataEncoder_Put(
e, ptr, upb_FromBase92(kUpb_EncodedValue_FieldSeparator));
if (!ptr) return NULL;
}
ptr = upb_MtDataEncoder_PutBase92Varint(e, ptr, field_num, upb_ToBase92(0),
upb_ToBase92(63));
in->state.msg_state.oneof_state = kUpb_OneofState_EmittedOneofField;
return ptr;
}
void upb_MtDataEncoder_StartEnum(upb_MtDataEncoder* e) {
upb_MtDataEncoderInternal* in = upb_MtDataEncoder_GetInternal(e, NULL);
in->state.enum_state.present_values_mask = 0;
in->state.enum_state.last_written_value = 0;
}
static char* upb_MtDataEncoder_FlushDenseEnumMask(upb_MtDataEncoder* e,
char* ptr) {
upb_MtDataEncoderInternal* in = (upb_MtDataEncoderInternal*)e->internal;
ptr = upb_MtDataEncoder_Put(e, ptr, in->state.enum_state.present_values_mask);
in->state.enum_state.present_values_mask = 0;
in->state.enum_state.last_written_value += 5;
return ptr;
}
char* upb_MtDataEncoder_PutEnumValue(upb_MtDataEncoder* e, char* ptr,
uint32_t val) {
// TODO(b/229641772): optimize this encoding.
upb_MtDataEncoderInternal* in = upb_MtDataEncoder_GetInternal(e, ptr);
UPB_ASSERT(val >= in->state.enum_state.last_written_value);
uint32_t delta = val - in->state.enum_state.last_written_value;
if (delta >= 5 && in->state.enum_state.present_values_mask) {
ptr = upb_MtDataEncoder_FlushDenseEnumMask(e, ptr);
delta -= 5;
}
if (delta >= 5) {
ptr = upb_MtDataEncoder_PutBase92Varint(
e, ptr, delta, kUpb_EncodedValue_MinSkip, kUpb_EncodedValue_MaxSkip);
in->state.enum_state.last_written_value += delta;
delta = 0;
}
UPB_ASSERT((in->state.enum_state.present_values_mask >> delta) == 0);
in->state.enum_state.present_values_mask |= 1ULL << delta;
return ptr;
}
char* upb_MtDataEncoder_EndEnum(upb_MtDataEncoder* e, char* ptr) {
upb_MtDataEncoderInternal* in = upb_MtDataEncoder_GetInternal(e, ptr);
if (!in->state.enum_state.present_values_mask) return ptr;
return upb_MtDataEncoder_FlushDenseEnumMask(e, ptr);
}
const upb_MiniTable_Field* upb_MiniTable_FindFieldByNumber(
const upb_MiniTable* table, uint32_t number) {
int n = table->field_count;
for (int i = 0; i < n; i++) {
if (table->fields[i].number == number) {
return &table->fields[i];
}
}
return NULL;
}
/** Data decoder **************************************************************/
// Note: we sort by this number when calculating layout order.
typedef enum {
kUpb_LayoutItemType_OneofCase, // Oneof case.
kUpb_LayoutItemType_OneofField, // Oneof field data.
kUpb_LayoutItemType_Field, // Non-oneof field data.
kUpb_LayoutItemType_Max = kUpb_LayoutItemType_Field,
} upb_LayoutItemType;
#define kUpb_LayoutItem_IndexSentinel ((uint16_t)-1)
typedef struct {
// Index of the corresponding field. When this is a oneof field, the field's
// offset will be the index of the next field in a linked list.
uint16_t field_index;
uint16_t offset;
upb_FieldRep rep;
upb_LayoutItemType type;
} upb_LayoutItem;
typedef struct {
upb_LayoutItem* data;
size_t size;
size_t capacity;
} upb_LayoutItemVector;
typedef struct {
const char* end;
upb_MiniTable* table;
upb_MiniTable_Field* fields;
upb_MiniTablePlatform platform;
upb_LayoutItemVector vec;
upb_Arena* arena;
upb_Status* status;
jmp_buf err;
} upb_MtDecoder;
UPB_PRINTF(2, 3)
UPB_NORETURN static void upb_MtDecoder_ErrorFormat(upb_MtDecoder* d,
const char* fmt, ...) {
va_list argp;
upb_Status_SetErrorMessage(d->status, "Error building mini table: ");
va_start(argp, fmt);
upb_Status_VAppendErrorFormat(d->status, fmt, argp);
va_end(argp);
UPB_LONGJMP(d->err, 1);
}
static void upb_MtDecoder_CheckOutOfMemory(upb_MtDecoder* d, const void* ptr) {
if (!ptr) upb_MtDecoder_ErrorFormat(d, "Out of memory");
}
// In each field's offset, we temporarily store a presence classifier:
enum PresenceClass {
kNoPresence = 0,
kHasbitPresence = 1,
kRequiredPresence = 2,
kOneofBase = 3,
// Negative values refer to a specific oneof with that number. Positive
// values >= kOneofBase indicate that this field is in a oneof, and specify
// the next field in this oneof's linked list.
};
static const char* upb_MiniTable_DecodeBase92Varint(upb_MtDecoder* d,
const char* ptr,
char first_ch, uint8_t min,
uint8_t max,
uint32_t* out_val) {
uint32_t val = 0;
uint32_t shift = 0;
const int bits_per_char =
_upb_Log2Ceiling(upb_FromBase92(max) - upb_FromBase92(min));
char ch = first_ch;
while (1) {
uint32_t bits = upb_FromBase92(ch) - upb_FromBase92(min);
UPB_ASSERT(shift < 32);
val |= bits << shift;
if (ptr == d->end || *ptr < min || max < *ptr) {
*out_val = val;
return ptr;
}
ch = *ptr++;
shift += bits_per_char;
}
}
static bool upb_MiniTable_HasSub(upb_MiniTable_Field* field,
uint64_t msg_modifiers) {
switch (field->descriptortype) {
case kUpb_FieldType_Message:
case kUpb_FieldType_Group:
case kUpb_FieldType_Enum:
return true;
case kUpb_FieldType_String:
if (!(msg_modifiers & kUpb_MessageModifier_ValidateUtf8)) {
field->descriptortype = kUpb_FieldType_Bytes;
}
return false;
default:
return false;
}
}
static bool upb_MtDecoder_FieldIsPackable(upb_MiniTable_Field* field) {
return (field->mode & kUpb_FieldMode_Array) &&
upb_IsTypePackable(field->descriptortype);
}
static void upb_MiniTable_SetTypeAndSub(upb_MiniTable_Field* field,
upb_FieldType type, uint32_t* sub_count,
uint64_t msg_modifiers) {
field->descriptortype = type;
if (upb_MiniTable_HasSub(field, msg_modifiers)) {
field->submsg_index = sub_count ? (*sub_count)++ : 0;
} else {
field->submsg_index = kUpb_NoSub;
}
if (upb_MtDecoder_FieldIsPackable(field) &&
(msg_modifiers & kUpb_MessageModifier_DefaultIsPacked)) {
field->mode |= kUpb_LabelFlags_IsPacked;
}
}
static void upb_MiniTable_SetField(upb_MtDecoder* d, uint8_t ch,
upb_MiniTable_Field* field,
uint64_t msg_modifiers,
uint32_t* sub_count) {
static const char kUpb_EncodedToFieldRep[] = {
[kUpb_EncodedType_Double] = kUpb_FieldRep_8Byte,
[kUpb_EncodedType_Float] = kUpb_FieldRep_4Byte,
[kUpb_EncodedType_Int64] = kUpb_FieldRep_8Byte,
[kUpb_EncodedType_UInt64] = kUpb_FieldRep_8Byte,
[kUpb_EncodedType_Int32] = kUpb_FieldRep_4Byte,
[kUpb_EncodedType_Fixed64] = kUpb_FieldRep_8Byte,
[kUpb_EncodedType_Fixed32] = kUpb_FieldRep_4Byte,
[kUpb_EncodedType_Bool] = kUpb_FieldRep_1Byte,
[kUpb_EncodedType_String] = kUpb_FieldRep_StringView,
[kUpb_EncodedType_Group] = kUpb_FieldRep_Pointer,
[kUpb_EncodedType_Message] = kUpb_FieldRep_Pointer,
[kUpb_EncodedType_Bytes] = kUpb_FieldRep_StringView,
[kUpb_EncodedType_UInt32] = kUpb_FieldRep_4Byte,
[kUpb_EncodedType_Enum] = kUpb_FieldRep_4Byte,
[kUpb_EncodedType_SFixed32] = kUpb_FieldRep_4Byte,
[kUpb_EncodedType_SFixed64] = kUpb_FieldRep_8Byte,
[kUpb_EncodedType_SInt32] = kUpb_FieldRep_4Byte,
[kUpb_EncodedType_SInt64] = kUpb_FieldRep_8Byte,
};
static const char kUpb_EncodedToType[] = {
[kUpb_EncodedType_Double] = kUpb_FieldType_Double,
[kUpb_EncodedType_Float] = kUpb_FieldType_Float,
[kUpb_EncodedType_Int64] = kUpb_FieldType_Int64,
[kUpb_EncodedType_UInt64] = kUpb_FieldType_UInt64,
[kUpb_EncodedType_Int32] = kUpb_FieldType_Int32,
[kUpb_EncodedType_Fixed64] = kUpb_FieldType_Fixed64,
[kUpb_EncodedType_Fixed32] = kUpb_FieldType_Fixed32,
[kUpb_EncodedType_Bool] = kUpb_FieldType_Bool,
[kUpb_EncodedType_String] = kUpb_FieldType_String,
[kUpb_EncodedType_Group] = kUpb_FieldType_Group,
[kUpb_EncodedType_Message] = kUpb_FieldType_Message,
[kUpb_EncodedType_Bytes] = kUpb_FieldType_Bytes,
[kUpb_EncodedType_UInt32] = kUpb_FieldType_UInt32,
[kUpb_EncodedType_Enum] = kUpb_FieldType_Enum,
[kUpb_EncodedType_SFixed32] = kUpb_FieldType_SFixed32,
[kUpb_EncodedType_SFixed64] = kUpb_FieldType_SFixed64,
[kUpb_EncodedType_SInt32] = kUpb_FieldType_SInt32,
[kUpb_EncodedType_SInt64] = kUpb_FieldType_SInt64,
};
int8_t type = upb_FromBase92(ch);
if (ch >= upb_ToBase92(kUpb_EncodedType_RepeatedBase)) {
type -= kUpb_EncodedType_RepeatedBase;
field->mode = kUpb_FieldMode_Array;
field->mode |= kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift;
field->offset = kNoPresence;
} else {
field->mode = kUpb_FieldMode_Scalar;
field->mode |= kUpb_EncodedToFieldRep[type] << kUpb_FieldRep_Shift;
field->offset = kHasbitPresence;
}
if (type >= 18) {
upb_MtDecoder_ErrorFormat(d, "Invalid field type: %d", (int)type);
UPB_UNREACHABLE();
}
upb_MiniTable_SetTypeAndSub(field, kUpb_EncodedToType[type], sub_count,
msg_modifiers);
}
static void upb_MtDecoder_ModifyField(upb_MtDecoder* d,
uint32_t message_modifiers,
uint32_t field_modifiers,
upb_MiniTable_Field* field) {
if (field_modifiers & kUpb_EncodedFieldModifier_FlipPacked) {
if (!upb_MtDecoder_FieldIsPackable(field)) {
upb_MtDecoder_ErrorFormat(
d, "Cannot flip packed on unpackable field %" PRIu32, field->number);
UPB_UNREACHABLE();
}
field->mode ^= kUpb_LabelFlags_IsPacked;
}
bool singular = field_modifiers & kUpb_EncodedFieldModifier_IsProto3Singular;
bool required = field_modifiers & kUpb_EncodedFieldModifier_IsRequired;
// Validate.
if ((singular || required) && field->offset != kHasbitPresence) {
upb_MtDecoder_ErrorFormat(
d, "Invalid modifier(s) for repeated field %" PRIu32, field->number);
UPB_UNREACHABLE();
}
if (singular && required) {
upb_MtDecoder_ErrorFormat(
d, "Field %" PRIu32 " cannot be both singular and required",
field->number);
UPB_UNREACHABLE();
}
if (singular) field->offset = kNoPresence;
if (required) {
field->offset = kRequiredPresence;
}
}
static void upb_MtDecoder_PushItem(upb_MtDecoder* d, upb_LayoutItem item) {
if (d->vec.size == d->vec.capacity) {
size_t new_cap = UPB_MAX(8, d->vec.size * 2);
d->vec.data = realloc(d->vec.data, new_cap * sizeof(*d->vec.data));
upb_MtDecoder_CheckOutOfMemory(d, d->vec.data);
d->vec.capacity = new_cap;
}
d->vec.data[d->vec.size++] = item;
}
static void upb_MtDecoder_PushOneof(upb_MtDecoder* d, upb_LayoutItem item) {
if (item.field_index == kUpb_LayoutItem_IndexSentinel) {
upb_MtDecoder_ErrorFormat(d, "Empty oneof");
UPB_UNREACHABLE();
}
item.field_index -= kOneofBase;
// Push oneof data.
item.type = kUpb_LayoutItemType_OneofField;
upb_MtDecoder_PushItem(d, item);
// Push oneof case.
item.rep = kUpb_FieldRep_4Byte; // Field Number.
item.type = kUpb_LayoutItemType_OneofCase;
upb_MtDecoder_PushItem(d, item);
}
size_t upb_MtDecoder_SizeOfRep(upb_FieldRep rep,
upb_MiniTablePlatform platform) {
static const uint8_t kRepToSize32[] = {
[kUpb_FieldRep_1Byte] = 1, [kUpb_FieldRep_4Byte] = 4,
[kUpb_FieldRep_Pointer] = 4, [kUpb_FieldRep_StringView] = 8,
[kUpb_FieldRep_8Byte] = 8,
};
static const uint8_t kRepToSize64[] = {
[kUpb_FieldRep_1Byte] = 1, [kUpb_FieldRep_4Byte] = 4,
[kUpb_FieldRep_Pointer] = 8, [kUpb_FieldRep_StringView] = 16,
[kUpb_FieldRep_8Byte] = 8,
};
UPB_ASSERT(sizeof(upb_StringView) ==
UPB_SIZE(kRepToSize32, kRepToSize64)[kUpb_FieldRep_StringView]);
return platform == kUpb_MiniTablePlatform_32Bit ? kRepToSize32[rep]
: kRepToSize64[rep];
}
size_t upb_MtDecoder_AlignOfRep(upb_FieldRep rep,
upb_MiniTablePlatform platform) {
static const uint8_t kRepToAlign32[] = {
[kUpb_FieldRep_1Byte] = 1, [kUpb_FieldRep_4Byte] = 4,
[kUpb_FieldRep_Pointer] = 4, [kUpb_FieldRep_StringView] = 4,
[kUpb_FieldRep_8Byte] = 8,
};
static const uint8_t kRepToAlign64[] = {
[kUpb_FieldRep_1Byte] = 1, [kUpb_FieldRep_4Byte] = 4,
[kUpb_FieldRep_Pointer] = 8, [kUpb_FieldRep_StringView] = 8,
[kUpb_FieldRep_8Byte] = 8,
};
UPB_ASSERT(UPB_ALIGN_OF(upb_StringView) ==
UPB_SIZE(kRepToAlign32, kRepToAlign64)[kUpb_FieldRep_StringView]);
return platform == kUpb_MiniTablePlatform_32Bit ? kRepToAlign32[rep]
: kRepToAlign64[rep];
}
static const char* upb_MtDecoder_DecodeOneofField(upb_MtDecoder* d,
const char* ptr,
char first_ch,
upb_LayoutItem* item) {
uint32_t field_num;
ptr = upb_MiniTable_DecodeBase92Varint(
d, ptr, first_ch, kUpb_EncodedValue_MinOneofField,
kUpb_EncodedValue_MaxOneofField, &field_num);
upb_MiniTable_Field* f =
(void*)upb_MiniTable_FindFieldByNumber(d->table, field_num);
if (!f) {
upb_MtDecoder_ErrorFormat(d,
"Couldn't add field number %" PRIu32
" to oneof, no such field number.",
field_num);
UPB_UNREACHABLE();
}
if (f->offset != kHasbitPresence) {
upb_MtDecoder_ErrorFormat(
d,
"Cannot add repeated, required, or singular field %" PRIu32
" to oneof.",
field_num);
UPB_UNREACHABLE();
}
// Oneof storage must be large enough to accommodate the largest member.
int rep = f->mode >> kUpb_FieldRep_Shift;
if (upb_MtDecoder_SizeOfRep(rep, d->platform) >
upb_MtDecoder_SizeOfRep(item->rep, d->platform)) {
item->rep = rep;
}
// Prepend this field to the linked list.
f->offset = item->field_index;
item->field_index = (f - d->fields) + kOneofBase;
return ptr;
}
static const char* upb_MtDecoder_DecodeOneofs(upb_MtDecoder* d,
const char* ptr) {
upb_LayoutItem item = {.rep = 0,
.field_index = kUpb_LayoutItem_IndexSentinel};
while (ptr < d->end) {
char ch = *ptr++;
if (ch == kUpb_EncodedValue_FieldSeparator) {
// Field separator, no action needed.
} else if (ch == kUpb_EncodedValue_OneofSeparator) {
// End of oneof.
upb_MtDecoder_PushOneof(d, item);
item.field_index = kUpb_LayoutItem_IndexSentinel; // Move to next oneof.
} else {
ptr = upb_MtDecoder_DecodeOneofField(d, ptr, ch, &item);
}
}
// Push final oneof.
upb_MtDecoder_PushOneof(d, item);
return ptr;
}
static const char* upb_MtDecoder_ParseModifier(upb_MtDecoder* d,
const char* ptr, char first_ch,
upb_MiniTable_Field* last_field,
uint64_t* msg_modifiers) {
uint32_t mod;
ptr = upb_MiniTable_DecodeBase92Varint(d, ptr, first_ch,
kUpb_EncodedValue_MinModifier,
kUpb_EncodedValue_MaxModifier, &mod);
if (last_field) {
upb_MtDecoder_ModifyField(d, *msg_modifiers, mod, last_field);
} else {
if (!d->table) {
upb_MtDecoder_ErrorFormat(d, "Extensions cannot have message modifiers");
UPB_UNREACHABLE();
}
*msg_modifiers = mod;
}
return ptr;
}
static void upb_MtDecoder_AllocateSubs(upb_MtDecoder* d, uint32_t sub_count) {
size_t subs_bytes = sizeof(*d->table->subs) * sub_count;
d->table->subs = upb_Arena_Malloc(d->arena, subs_bytes);
upb_MtDecoder_CheckOutOfMemory(d, d->table->subs);
}
static void upb_MtDecoder_Parse(upb_MtDecoder* d, const char* ptr, size_t len,
void* fields, size_t field_size,
uint16_t* field_count, uint32_t* sub_count) {
uint64_t msg_modifiers = 0;
uint32_t last_field_number = 0;
upb_MiniTable_Field* last_field = NULL;
bool need_dense_below = d->table != NULL;
d->end = UPB_PTRADD(ptr, len);
while (ptr < d->end) {
char ch = *ptr++;
if (ch <= kUpb_EncodedValue_MaxField) {
upb_MiniTable_Field* field = fields;
*field_count += 1;
fields = (char*)fields + field_size;
field->number = ++last_field_number;
last_field = field;
upb_MiniTable_SetField(d, ch, field, msg_modifiers, sub_count);
} else if (kUpb_EncodedValue_MinModifier <= ch &&
ch <= kUpb_EncodedValue_MaxModifier) {
ptr = upb_MtDecoder_ParseModifier(d, ptr, ch, last_field, &msg_modifiers);
if (msg_modifiers & kUpb_MessageModifier_IsExtendable) {
d->table->ext |= kUpb_ExtMode_Extendable;
}
} else if (ch == kUpb_EncodedValue_End) {
if (!d->table) {
upb_MtDecoder_ErrorFormat(d, "Extensions cannot have oneofs.");
UPB_UNREACHABLE();
}
ptr = upb_MtDecoder_DecodeOneofs(d, ptr);
} else if (kUpb_EncodedValue_MinSkip <= ch &&
ch <= kUpb_EncodedValue_MaxSkip) {
if (need_dense_below) {
d->table->dense_below = d->table->field_count;
need_dense_below = false;
}
uint32_t skip;
ptr = upb_MiniTable_DecodeBase92Varint(d, ptr, ch,
kUpb_EncodedValue_MinSkip,
kUpb_EncodedValue_MaxSkip, &skip);
last_field_number += skip;
last_field_number--; // Next field seen will increment.
}
}
if (need_dense_below) {
d->table->dense_below = d->table->field_count;
}
}
static void upb_MtDecoder_ParseMessage(upb_MtDecoder* d, const char* data,
size_t len) {
// Buffer length is an upper bound on the number of fields. We will return
// what we don't use.
d->fields = upb_Arena_Malloc(d->arena, sizeof(*d->fields) * len);
upb_MtDecoder_CheckOutOfMemory(d, d->fields);
uint32_t sub_count = 0;
d->table->field_count = 0;
d->table->fields = d->fields;
upb_MtDecoder_Parse(d, data, len, d->fields, sizeof(*d->fields),
&d->table->field_count, &sub_count);
upb_Arena_ShrinkLast(d->arena, d->fields, sizeof(*d->fields) * len,
sizeof(*d->fields) * d->table->field_count);
d->table->fields = d->fields;
upb_MtDecoder_AllocateSubs(d, sub_count);
}
int upb_MtDecoder_CompareFields(const void* _a, const void* _b) {
const upb_LayoutItem* a = _a;
const upb_LayoutItem* b = _b;
// Currently we just sort by:
// 1. rep (smallest fields first)
// 2. type (oneof cases first)
// 2. field_index (smallest numbers first)
// The main goal of this is to reduce space lost to padding.
// Later we may have more subtle reasons to prefer a different ordering.
const int rep_bits = _upb_Log2Ceiling(kUpb_FieldRep_Max);
const int type_bits = _upb_Log2Ceiling(kUpb_LayoutItemType_Max);
const int idx_bits = (sizeof(a->field_index) * 8);
UPB_ASSERT(idx_bits + rep_bits + type_bits < 32);
#define UPB_COMBINE(rep, ty, idx) (((rep << type_bits) | ty) << idx_bits) | idx
uint32_t a_packed = UPB_COMBINE(a->rep, a->type, a->field_index);
uint32_t b_packed = UPB_COMBINE(b->rep, b->type, b->field_index);
assert(a_packed != b_packed);
#undef UPB_COMBINE
return a_packed < b_packed ? -1 : 1;
}
static bool upb_MtDecoder_SortLayoutItems(upb_MtDecoder* d) {
// Add items for all non-oneof fields (oneofs were already added).
int n = d->table->field_count;
for (int i = 0; i < n; i++) {
upb_MiniTable_Field* f = &d->fields[i];
if (f->offset >= kOneofBase) continue;
upb_LayoutItem item = {.field_index = i,
.rep = f->mode >> kUpb_FieldRep_Shift,
.type = kUpb_LayoutItemType_Field};
upb_MtDecoder_PushItem(d, item);
}
if (d->vec.size) {
qsort(d->vec.data, d->vec.size, sizeof(*d->vec.data),
upb_MtDecoder_CompareFields);
}
return true;
}
static size_t upb_MiniTable_DivideRoundUp(size_t n, size_t d) {
return (n + d - 1) / d;
}
static void upb_MtDecoder_AssignHasbits(upb_MiniTable* ret) {
int n = ret->field_count;
int last_hasbit = 0; // 0 cannot be used.
// First assign required fields, which must have the lowest hasbits.
for (int i = 0; i < n; i++) {
upb_MiniTable_Field* field = (upb_MiniTable_Field*)&ret->fields[i];
if (field->offset == kRequiredPresence) {
field->presence = ++last_hasbit;
} else if (field->offset == kNoPresence) {
field->presence = 0;
}
}
ret->required_count = last_hasbit;
// Next assign non-required hasbit fields.
for (int i = 0; i < n; i++) {
upb_MiniTable_Field* field = (upb_MiniTable_Field*)&ret->fields[i];
if (field->offset == kHasbitPresence) {
field->presence = ++last_hasbit;
}
}
ret->size = last_hasbit ? upb_MiniTable_DivideRoundUp(last_hasbit + 1, 8) : 0;
}
size_t upb_MtDecoder_Place(upb_MtDecoder* d, upb_FieldRep rep) {
size_t size = upb_MtDecoder_SizeOfRep(rep, d->platform);
size_t align = upb_MtDecoder_AlignOfRep(rep, d->platform);
size_t ret = UPB_ALIGN_UP(d->table->size, align);
d->table->size = ret + size;
return ret;
}
static void upb_MtDecoder_AssignOffsets(upb_MtDecoder* d) {
upb_LayoutItem* end = UPB_PTRADD(d->vec.data, d->vec.size);
// Compute offsets.
for (upb_LayoutItem* item = d->vec.data; item < end; item++) {
item->offset = upb_MtDecoder_Place(d, item->rep);
}
// Assign oneof case offsets. We must do these first, since assigning
// actual offsets will overwrite the links of the linked list.
for (upb_LayoutItem* item = d->vec.data; item < end; item++) {
if (item->type != kUpb_LayoutItemType_OneofCase) continue;
upb_MiniTable_Field* f = &d->fields[item->field_index];
while (true) {
f->presence = ~item->offset;
if (f->offset == kUpb_LayoutItem_IndexSentinel) break;
UPB_ASSERT(f->offset - kOneofBase < d->table->field_count);
f = &d->fields[f->offset - kOneofBase];
}
}
// Assign offsets.
for (upb_LayoutItem* item = d->vec.data; item < end; item++) {
upb_MiniTable_Field* f = &d->fields[item->field_index];
switch (item->type) {
case kUpb_LayoutItemType_OneofField:
while (true) {
uint16_t next_offset = f->offset;
f->offset = item->offset;
if (next_offset == kUpb_LayoutItem_IndexSentinel) break;
f = &d->fields[next_offset - kOneofBase];
}
break;
case kUpb_LayoutItemType_Field:
f->offset = item->offset;
break;
default:
break;
}
}
// The fasttable parser (supported on 64-bit only) depends on this being a
// multiple of 8 in order to satisfy UPB_MALLOC_ALIGN, which is also 8.
//
// On 32-bit we could potentially make this smaller, but there is no
// compelling reason to optimize this right now.
d->table->size = UPB_ALIGN_UP(d->table->size, 8);
}
upb_MiniTable* upb_MiniTable_BuildWithBuf(const char* data, size_t len,
upb_MiniTablePlatform platform,
upb_Arena* arena, void** buf,
size_t* buf_size,
upb_Status* status) {
upb_MtDecoder decoder = {
.platform = platform,
.vec =
{
.data = *buf,
.capacity = *buf_size / sizeof(*decoder.vec.data),
.size = 0,
},
.arena = arena,
.status = status,
.table = upb_Arena_Malloc(arena, sizeof(*decoder.table)),
};
if (UPB_SETJMP(decoder.err)) {
decoder.table = NULL;
goto done;
}
upb_MtDecoder_CheckOutOfMemory(&decoder, decoder.table);
decoder.table->size = 0;
decoder.table->field_count = 0;
decoder.table->ext = kUpb_ExtMode_NonExtendable;
decoder.table->dense_below = 0;
decoder.table->table_mask = -1;
decoder.table->required_count = 0;
upb_MtDecoder_ParseMessage(&decoder, data, len);
upb_MtDecoder_AssignHasbits(decoder.table);
upb_MtDecoder_SortLayoutItems(&decoder);
upb_MtDecoder_AssignOffsets(&decoder);
done:
*buf = decoder.vec.data;
*buf_size = decoder.vec.capacity / sizeof(*decoder.vec.data);
return decoder.table;
}
upb_MiniTable* upb_MiniTable_BuildMessageSet(upb_MiniTablePlatform platform,
upb_Arena* arena) {
upb_MiniTable* ret = upb_Arena_Malloc(arena, sizeof(*ret));
if (!ret) return NULL;
ret->size = 0;
ret->field_count = 0;
ret->ext = kUpb_ExtMode_IsMessageSet;
ret->dense_below = 0;
ret->table_mask = -1;
ret->required_count = 0;
return ret;
}
upb_MiniTable* upb_MiniTable_BuildMapEntry(upb_FieldType key_type,
upb_FieldType value_type,
bool value_is_proto3_enum,
upb_MiniTablePlatform platform,
upb_Arena* arena) {
upb_MiniTable* ret = upb_Arena_Malloc(arena, sizeof(*ret));
upb_MiniTable_Field* fields = upb_Arena_Malloc(arena, sizeof(*fields) * 2);
if (!ret || !fields) return NULL;
upb_MiniTable_Sub* subs = NULL;
if (value_is_proto3_enum) value_type = kUpb_FieldType_Int32;
if (value_type == kUpb_FieldType_Message ||
value_type == kUpb_FieldType_Group || value_type == kUpb_FieldType_Enum) {
subs = upb_Arena_Malloc(arena, sizeof(*subs));
if (!subs) return NULL;
}
size_t field_size =
upb_MtDecoder_SizeOfRep(kUpb_FieldRep_StringView, platform);
fields[0].number = 1;
fields[1].number = 2;
fields[0].mode = kUpb_FieldMode_Scalar;
fields[1].mode = kUpb_FieldMode_Scalar;
fields[0].presence = 0;
fields[1].presence = 0;
fields[0].offset = 0;
fields[1].offset = field_size;
upb_MiniTable_SetTypeAndSub(&fields[0], key_type, NULL, 0);
upb_MiniTable_SetTypeAndSub(&fields[1], value_type, NULL, 0);
ret->size = UPB_ALIGN_UP(2 * field_size, 8);
ret->field_count = 2;
ret->ext = kUpb_ExtMode_NonExtendable | kUpb_ExtMode_IsMapEntry;
ret->dense_below = 2;
ret->table_mask = -1;
ret->required_count = 0;
ret->subs = subs;
ret->fields = fields;
return ret;
}
static bool upb_MiniTable_BuildEnumValue(upb_MtDecoder* d,
upb_MiniTable_Enum* table,
uint32_t val, upb_Arena* arena) {
if (val < 64) {
table->mask |= 1ULL << val;
return true;
}
int32_t* values = (void*)table->values;
values = upb_Arena_Realloc(arena, values, table->value_count * 4,
(table->value_count + 1) * 4);
upb_MtDecoder_CheckOutOfMemory(d, values);
values[table->value_count++] = (int32_t)val;
table->values = values;
return true;
}
upb_MiniTable_Enum* upb_MiniTable_BuildEnum(const char* data, size_t len,
upb_Arena* arena,
upb_Status* status) {
upb_MtDecoder d = {
.status = status,
.end = UPB_PTRADD(data, len),
};
if (UPB_SETJMP(d.err)) {
return NULL;
}
upb_MiniTable_Enum* table = upb_Arena_Malloc(arena, sizeof(*table));
upb_MtDecoder_CheckOutOfMemory(&d, table);
table->mask = 0;
table->value_count = 0;
table->values = NULL;
const char* ptr = data;
uint32_t base = 0;
while (ptr < d.end) {
char ch = *ptr++;
if (ch <= kUpb_EncodedValue_MaxEnumMask) {
uint32_t mask = upb_FromBase92(ch);
for (int i = 0; i < 5; i++, base++, mask >>= 1) {
if (mask & 1) {
if (!upb_MiniTable_BuildEnumValue(&d, table, base, arena)) {
return NULL;
}
}
}
} else if (kUpb_EncodedValue_MinSkip <= ch &&
ch <= kUpb_EncodedValue_MaxSkip) {
uint32_t skip;
ptr = upb_MiniTable_DecodeBase92Varint(&d, ptr, ch,
kUpb_EncodedValue_MinSkip,
kUpb_EncodedValue_MaxSkip, &skip);
base += skip;
} else {
upb_Status_SetErrorFormat(status, "Unexpected character: %c", ch);
return NULL;
}
}
return table;
}
bool upb_MiniTable_BuildExtension(const char* data, size_t len,
upb_MiniTable_Extension* ext,
upb_MiniTable_Sub sub, upb_Status* status) {
upb_MtDecoder decoder = {
.arena = NULL,
.status = status,
.table = NULL,
};
if (UPB_SETJMP(decoder.err)) {
return false;
}
uint16_t count = 0;
upb_MtDecoder_Parse(&decoder, data, len, ext, sizeof(*ext), &count, NULL);
ext->field.mode |= kUpb_LabelFlags_IsExtension;
ext->field.offset = 0;
return true;
}
upb_MiniTable* upb_MiniTable_Build(const char* data, size_t len,
upb_MiniTablePlatform platform,
upb_Arena* arena, upb_Status* status) {
void* buf = NULL;
size_t size = 0;
upb_MiniTable* ret = upb_MiniTable_BuildWithBuf(data, len, platform, arena,
&buf, &size, status);
free(buf);
return ret;
}
void upb_MiniTable_SetSubMessage(upb_MiniTable* table,
upb_MiniTable_Field* field,
const upb_MiniTable* sub) {
UPB_ASSERT((uintptr_t)table->fields <= (uintptr_t)field &&
(uintptr_t)field <
(uintptr_t)(table->fields + table->field_count));
if (sub->ext & kUpb_ExtMode_IsMapEntry) {
field->mode =
(kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift) | kUpb_FieldMode_Map;
}
upb_MiniTable_Sub* table_sub = (void*)&table->subs[field->submsg_index];
table_sub->submsg = sub;
}
void upb_MiniTable_SetSubEnum(upb_MiniTable* table, upb_MiniTable_Field* field,
const upb_MiniTable_Enum* sub) {
UPB_ASSERT((uintptr_t)table->fields <= (uintptr_t)field &&
(uintptr_t)field <
(uintptr_t)(table->fields + table->field_count));
upb_MiniTable_Sub* table_sub = (void*)&table->subs[field->submsg_index];
table_sub->subenum = sub;
}
/** upb/def.c ************************************************************/
#include <ctype.h>
#include <errno.h>
#include <setjmp.h>
#include <stdlib.h>
#include <string.h>
/* Must be last. */
typedef struct {
size_t len;
char str[1]; /* Null-terminated string data follows. */
} str_t;
/* The upb core does not generally have a concept of default instances. However
* for descriptor options we make an exception since the max size is known and
* modest (<200 bytes). All types can share a default instance since it is
* initialized to zeroes.
*
* We have to allocate an extra pointer for upb's internal metadata. */
static const char opt_default_buf[_UPB_MAXOPT_SIZE + sizeof(void*)] = {0};
static const char* opt_default = &opt_default_buf[sizeof(void*)];
struct upb_FieldDef {
const google_protobuf_FieldOptions* opts;
const upb_FileDef* file;
const upb_MessageDef* msgdef;
const char* full_name;
const char* json_name;
union {
int64_t sint;
uint64_t uint;
double dbl;
float flt;
bool boolean;
str_t* str;
} defaultval;
union {
const upb_OneofDef* oneof;
const upb_MessageDef* extension_scope;
} scope;
union {
const upb_MessageDef* msgdef;
const upb_EnumDef* enumdef;
const google_protobuf_FieldDescriptorProto* unresolved;
} sub;
uint32_t number_;
uint16_t index_;
uint16_t layout_index; /* Index into msgdef->layout->fields or file->exts */
bool has_default;
bool is_extension_;
bool packed_;
bool proto3_optional_;
bool has_json_name_;
upb_FieldType type_;
upb_Label label_;
#if UINTPTR_MAX == 0xffffffff
uint32_t padding; // Increase size to a multiple of 8.
#endif
};
struct upb_ExtensionRange {
const google_protobuf_ExtensionRangeOptions* opts;
int32_t start;
int32_t end;
};
struct upb_MessageDef {
const google_protobuf_MessageOptions* opts;
const upb_MiniTable* layout;
const upb_FileDef* file;
const upb_MessageDef* containing_type;
const char* full_name;
/* Tables for looking up fields by number and name. */
upb_inttable itof;
upb_strtable ntof;
/* All nested defs.
* MEM: We could save some space here by putting nested defs in a contiguous
* region and calculating counts from offsets or vice-versa. */
const upb_FieldDef* fields;
const upb_OneofDef* oneofs;
const upb_ExtensionRange* ext_ranges;
const upb_StringView* res_names;
const upb_MessageDef* nested_msgs;
const upb_MessageReservedRange* res_ranges;
const upb_EnumDef* nested_enums;
const upb_FieldDef* nested_exts;
int field_count;
int real_oneof_count;
int oneof_count;
int ext_range_count;
int res_range_count;
int res_name_count;
int nested_msg_count;
int nested_enum_count;
int nested_ext_count;
bool in_message_set;
upb_WellKnown well_known_type;
#if UINTPTR_MAX == 0xffffffff
uint32_t padding; // Increase size to a multiple of 8.
#endif
};
struct upb_EnumDef {
const google_protobuf_EnumOptions* opts;
const upb_MiniTable_Enum* layout; // Only for proto2.
const upb_FileDef* file;
const upb_MessageDef* containing_type; // Could be merged with "file".
const char* full_name;
upb_strtable ntoi;
upb_inttable iton;
const upb_EnumValueDef* values;
const upb_EnumReservedRange* res_ranges;
const upb_StringView* res_names;
int value_count;
int res_range_count;
int res_name_count;
int32_t defaultval;
#if UINTPTR_MAX == 0xffffffff
uint32_t padding; // Increase size to a multiple of 8.
#endif
};
struct upb_EnumValueDef {
const google_protobuf_EnumValueOptions* opts;
const upb_EnumDef* parent;
const char* full_name;
int32_t number;
};
struct upb_OneofDef {
const google_protobuf_OneofOptions* opts;
const upb_MessageDef* parent;
const char* full_name;
int field_count;
bool synthetic;
const upb_FieldDef** fields;
upb_strtable ntof;
upb_inttable itof;
#if UINTPTR_MAX == 0xffffffff
uint32_t padding; // Increase size to a multiple of 8.
#endif
};
struct upb_FileDef {
const google_protobuf_FileOptions* opts;
const char* name;
const char* package;
const upb_FileDef** deps;
const int32_t* public_deps;
const int32_t* weak_deps;
const upb_MessageDef* top_lvl_msgs;
const upb_EnumDef* top_lvl_enums;
const upb_FieldDef* top_lvl_exts;
const upb_ServiceDef* services;
const upb_MiniTable_Extension** ext_layouts;
const upb_DefPool* symtab;
int dep_count;
int public_dep_count;
int weak_dep_count;
int top_lvl_msg_count;
int top_lvl_enum_count;
int top_lvl_ext_count;
int service_count;
int ext_count; /* All exts in the file. */
upb_Syntax syntax;
};
struct upb_MethodDef {
const google_protobuf_MethodOptions* opts;
upb_ServiceDef* service;
const char* full_name;
const upb_MessageDef* input_type;
const upb_MessageDef* output_type;
int index;
bool client_streaming;
bool server_streaming;
};
struct upb_ServiceDef {
const google_protobuf_ServiceOptions* opts;
const upb_FileDef* file;
const char* full_name;
upb_MethodDef* methods;
int method_count;
int index;
};
struct upb_DefPool {
upb_Arena* arena;
upb_strtable syms; /* full_name -> packed def ptr */
upb_strtable files; /* file_name -> upb_FileDef* */
upb_inttable exts; /* upb_MiniTable_Extension* -> upb_FieldDef* */
upb_ExtensionRegistry* extreg;
size_t bytes_loaded;
};
/* Inside a symtab we store tagged pointers to specific def types. */
typedef enum {
UPB_DEFTYPE_MASK = 7,
/* Only inside symtab table. */
UPB_DEFTYPE_EXT = 0,
UPB_DEFTYPE_MSG = 1,
UPB_DEFTYPE_ENUM = 2,
UPB_DEFTYPE_ENUMVAL = 3,
UPB_DEFTYPE_SERVICE = 4,
/* Only inside message table. */
UPB_DEFTYPE_FIELD = 0,
UPB_DEFTYPE_ONEOF = 1,
UPB_DEFTYPE_FIELD_JSONNAME = 2,
/* Only inside file table. */
UPB_DEFTYPE_FILE = 0,
UPB_DEFTYPE_LAYOUT = 1
} upb_deftype_t;
#define FIELD_TYPE_UNSPECIFIED 0
struct upb_MessageReservedRange {
int32_t start;
int32_t end;
};
struct symtab_addctx {
upb_DefPool* symtab;
upb_FileDef* file; /* File we are building. */
upb_Arena* arena; /* Allocate defs here. */
upb_Arena* tmp_arena; /* For temporary allocations. */
const upb_MiniTable_File* layout; /* NULL if we should build layouts. */
int enum_count; /* Count of enums built so far. */
int msg_count; /* Count of messages built so far. */
int ext_count; /* Count of extensions built so far. */
upb_Status* status; /* Record errors here. */
jmp_buf err; /* longjmp() on error. */
};
static upb_deftype_t deftype(upb_value v) {
uintptr_t num = (uintptr_t)upb_value_getconstptr(v);
return num & UPB_DEFTYPE_MASK;
}
static const void* unpack_def(upb_value v, upb_deftype_t type) {
uintptr_t num = (uintptr_t)upb_value_getconstptr(v);
return (num & UPB_DEFTYPE_MASK) == type
? (const void*)(num & ~UPB_DEFTYPE_MASK)
: NULL;
}
static upb_value pack_def(const void* ptr, upb_deftype_t type) {
// Our 3-bit pointer tagging requires all pointers to be multiples of 8.
// The arena will always yield 8-byte-aligned addresses, however we put
// the defs into arrays. For each element in the array to be 8-byte-aligned,
// the sizes of each def type must also be a multiple of 8.
//
// If any of these asserts fail, we need to add or remove padding on 32-bit
// machines (64-bit machines will have 8-byte alignment already due to
// pointers, which all of these structs have).
UPB_ASSERT((sizeof(upb_FieldDef) & UPB_DEFTYPE_MASK) == 0);
UPB_ASSERT((sizeof(upb_MessageDef) & UPB_DEFTYPE_MASK) == 0);
UPB_ASSERT((sizeof(upb_EnumDef) & UPB_DEFTYPE_MASK) == 0);
UPB_ASSERT((sizeof(upb_EnumValueDef) & UPB_DEFTYPE_MASK) == 0);
UPB_ASSERT((sizeof(upb_ServiceDef) & UPB_DEFTYPE_MASK) == 0);
UPB_ASSERT((sizeof(upb_OneofDef) & UPB_DEFTYPE_MASK) == 0);
uintptr_t num = (uintptr_t)ptr;
UPB_ASSERT((num & UPB_DEFTYPE_MASK) == 0);
num |= type;
return upb_value_constptr((const void*)num);
}
/* isalpha() etc. from <ctype.h> are locale-dependent, which we don't want. */
static bool upb_isbetween(uint8_t c, uint8_t low, uint8_t high) {
return c >= low && c <= high;
}
static char upb_ascii_lower(char ch) {
// Per ASCII this will lower-case a letter. If the result is a letter, the
// input was definitely a letter. If the output is not a letter, this may
// have transformed the character unpredictably.
return ch | 0x20;
}
static bool upb_isletter(char c) {
char lower = upb_ascii_lower(c);
return upb_isbetween(lower, 'a', 'z') || c == '_';
}
static bool upb_isalphanum(char c) {
return upb_isletter(c) || upb_isbetween(c, '0', '9');
}
static const char* shortdefname(const char* fullname) {
const char* p;
if (fullname == NULL) {
return NULL;
} else if ((p = strrchr(fullname, '.')) == NULL) {
/* No '.' in the name, return the full string. */
return fullname;
} else {
/* Return one past the last '.'. */
return p + 1;
}
}
/* All submessage fields are lower than all other fields.
* Secondly, fields are increasing in order. */
uint32_t field_rank(const upb_FieldDef* f) {
uint32_t ret = upb_FieldDef_Number(f);
const uint32_t high_bit = 1 << 30;
UPB_ASSERT(ret < high_bit);
if (!upb_FieldDef_IsSubMessage(f)) ret |= high_bit;
return ret;
}
int cmp_fields(const void* p1, const void* p2) {
const upb_FieldDef* f1 = *(upb_FieldDef* const*)p1;
const upb_FieldDef* f2 = *(upb_FieldDef* const*)p2;
return field_rank(f1) - field_rank(f2);
}
static void upb_Status_setoom(upb_Status* status) {
upb_Status_SetErrorMessage(status, "out of memory");
}
static void assign_msg_wellknowntype(upb_MessageDef* m) {
const char* name = upb_MessageDef_FullName(m);
if (name == NULL) {
m->well_known_type = kUpb_WellKnown_Unspecified;
return;
}
if (!strcmp(name, "google.protobuf.Any")) {
m->well_known_type = kUpb_WellKnown_Any;
} else if (!strcmp(name, "google.protobuf.FieldMask")) {
m->well_known_type = kUpb_WellKnown_FieldMask;
} else if (!strcmp(name, "google.protobuf.Duration")) {
m->well_known_type = kUpb_WellKnown_Duration;
} else if (!strcmp(name, "google.protobuf.Timestamp")) {
m->well_known_type = kUpb_WellKnown_Timestamp;
} else if (!strcmp(name, "google.protobuf.DoubleValue")) {
m->well_known_type = kUpb_WellKnown_DoubleValue;
} else if (!strcmp(name, "google.protobuf.FloatValue")) {
m->well_known_type = kUpb_WellKnown_FloatValue;
} else if (!strcmp(name, "google.protobuf.Int64Value")) {
m->well_known_type = kUpb_WellKnown_Int64Value;
} else if (!strcmp(name, "google.protobuf.UInt64Value")) {
m->well_known_type = kUpb_WellKnown_UInt64Value;
} else if (!strcmp(name, "google.protobuf.Int32Value")) {
m->well_known_type = kUpb_WellKnown_Int32Value;
} else if (!strcmp(name, "google.protobuf.UInt32Value")) {
m->well_known_type = kUpb_WellKnown_UInt32Value;
} else if (!strcmp(name, "google.protobuf.BoolValue")) {
m->well_known_type = kUpb_WellKnown_BoolValue;
} else if (!strcmp(name, "google.protobuf.StringValue")) {
m->well_known_type = kUpb_WellKnown_StringValue;
} else if (!strcmp(name, "google.protobuf.BytesValue")) {
m->well_known_type = kUpb_WellKnown_BytesValue;
} else if (!strcmp(name, "google.protobuf.Value")) {
m->well_known_type = kUpb_WellKnown_Value;
} else if (!strcmp(name, "google.protobuf.ListValue")) {
m->well_known_type = kUpb_WellKnown_ListValue;
} else if (!strcmp(name, "google.protobuf.Struct")) {
m->well_known_type = kUpb_WellKnown_Struct;
} else {
m->well_known_type = kUpb_WellKnown_Unspecified;
}
}
/* upb_EnumDef ****************************************************************/
const google_protobuf_EnumOptions* upb_EnumDef_Options(const upb_EnumDef* e) {
return e->opts;
}
bool upb_EnumDef_HasOptions(const upb_EnumDef* e) {
return e->opts != (void*)opt_default;
}
const char* upb_EnumDef_FullName(const upb_EnumDef* e) { return e->full_name; }
const char* upb_EnumDef_Name(const upb_EnumDef* e) {
return shortdefname(e->full_name);
}
const upb_FileDef* upb_EnumDef_File(const upb_EnumDef* e) { return e->file; }
const upb_MessageDef* upb_EnumDef_ContainingType(const upb_EnumDef* e) {
return e->containing_type;
}
int32_t upb_EnumDef_Default(const upb_EnumDef* e) {
UPB_ASSERT(upb_EnumDef_FindValueByNumber(e, e->defaultval));
return e->defaultval;
}
int upb_EnumDef_ReservedRangeCount(const upb_EnumDef* e) {
return e->res_range_count;
}
/* upb_EnumReservedRange ******************************************************/
struct upb_EnumReservedRange {
int32_t start;
int32_t end;
};
upb_EnumReservedRange* _upb_EnumReservedRange_At(const upb_EnumReservedRange* r,
int i) {
return (upb_EnumReservedRange*)&r[i];
}
int32_t upb_EnumReservedRange_Start(const upb_EnumReservedRange* r) {
return r->start;
}
int32_t upb_EnumReservedRange_End(const upb_EnumReservedRange* r) {
return r->end;
}
UPB_NORETURN UPB_NOINLINE UPB_PRINTF(2, 3) static void symtab_errf(
symtab_addctx* ctx, const char* fmt, ...) {
va_list argp;
va_start(argp, fmt);
upb_Status_VSetErrorFormat(ctx->status, fmt, argp);
va_end(argp);
UPB_LONGJMP(ctx->err, 1);
}
upb_EnumReservedRange* _upb_EnumReservedRanges_New(
symtab_addctx* ctx, int n,
const google_protobuf_EnumDescriptorProto_EnumReservedRange* const* protos,
const upb_EnumDef* e) {
upb_EnumReservedRange* r =
upb_Arena_Malloc(ctx->arena, sizeof(upb_EnumReservedRange) * n);
for (int i = 0; i < n; i++) {
const int32_t start =
google_protobuf_EnumDescriptorProto_EnumReservedRange_start(protos[i]);
const int32_t end =
google_protobuf_EnumDescriptorProto_EnumReservedRange_end(protos[i]);
// A full validation would also check that each range is disjoint, and that
// none of the fields overlap with the extension ranges, but we are just
// sanity checking here.
// Note: Not a typo! Unlike extension ranges and message reserved ranges,
// the end value of an enum reserved range is *inclusive*!
if (end < start) {
symtab_errf(ctx, "Reserved range (%d, %d) is invalid, enum=%s\n",
(int)start, (int)end, upb_EnumDef_FullName(e));
}
r[i].start = start;
r[i].end = end;
}
return r;
}
const upb_EnumReservedRange* upb_EnumDef_ReservedRange(const upb_EnumDef* e,
int i) {
UPB_ASSERT(0 <= i && i < e->res_range_count);
return _upb_EnumReservedRange_At(e->res_ranges, i);
}
int upb_EnumDef_ReservedNameCount(const upb_EnumDef* e) {
return e->res_name_count;
}
upb_StringView upb_EnumDef_ReservedName(const upb_EnumDef* e, int i) {
UPB_ASSERT(0 <= i && i < e->res_name_count);
return e->res_names[i];
}
int upb_EnumDef_ValueCount(const upb_EnumDef* e) { return e->value_count; }
const upb_EnumValueDef* upb_EnumDef_FindValueByNameWithSize(
const upb_EnumDef* def, const char* name, size_t len) {
upb_value v;
return upb_strtable_lookup2(&def->ntoi, name, len, &v)
? upb_value_getconstptr(v)
: NULL;
}
const upb_EnumValueDef* upb_EnumDef_FindValueByNumber(const upb_EnumDef* def,
int32_t num) {
upb_value v;
return upb_inttable_lookup(&def->iton, num, &v) ? upb_value_getconstptr(v)
: NULL;
}
bool upb_EnumDef_CheckNumber(const upb_EnumDef* e, int32_t num) {
// We could use upb_EnumDef_FindValueByNumber(e, num) != NULL, but we expect
// this to be faster (especially for small numbers).
return upb_MiniTable_Enum_CheckValue(e->layout, num);
}
const upb_EnumValueDef* upb_EnumDef_Value(const upb_EnumDef* e, int i) {
UPB_ASSERT(0 <= i && i < e->value_count);
return &e->values[i];
}
/* upb_EnumValueDef ***********************************************************/
const google_protobuf_EnumValueOptions* upb_EnumValueDef_Options(
const upb_EnumValueDef* e) {
return e->opts;
}
bool upb_EnumValueDef_HasOptions(const upb_EnumValueDef* e) {
return e->opts != (void*)opt_default;
}
const upb_EnumDef* upb_EnumValueDef_Enum(const upb_EnumValueDef* ev) {
return ev->parent;
}
const char* upb_EnumValueDef_FullName(const upb_EnumValueDef* ev) {
return ev->full_name;
}
const char* upb_EnumValueDef_Name(const upb_EnumValueDef* ev) {
return shortdefname(ev->full_name);
}
int32_t upb_EnumValueDef_Number(const upb_EnumValueDef* ev) {
return ev->number;
}
uint32_t upb_EnumValueDef_Index(const upb_EnumValueDef* ev) {
// Compute index in our parent's array.
return ev - ev->parent->values;
}
/* upb_ExtensionRange
* ***************************************************************/
const google_protobuf_ExtensionRangeOptions* upb_ExtensionRange_Options(
const upb_ExtensionRange* r) {
return r->opts;
}
bool upb_ExtensionRange_HasOptions(const upb_ExtensionRange* r) {
return r->opts != (void*)opt_default;
}
int32_t upb_ExtensionRange_Start(const upb_ExtensionRange* e) {
return e->start;
}
int32_t upb_ExtensionRange_End(const upb_ExtensionRange* e) { return e->end; }
/* upb_FieldDef ***************************************************************/
const google_protobuf_FieldOptions* upb_FieldDef_Options(
const upb_FieldDef* f) {
return f->opts;
}
bool upb_FieldDef_HasOptions(const upb_FieldDef* f) {
return f->opts != (void*)opt_default;
}
const char* upb_FieldDef_FullName(const upb_FieldDef* f) {
return f->full_name;
}
upb_CType upb_FieldDef_CType(const upb_FieldDef* f) {
switch (f->type_) {
case kUpb_FieldType_Double:
return kUpb_CType_Double;
case kUpb_FieldType_Float:
return kUpb_CType_Float;
case kUpb_FieldType_Int64:
case kUpb_FieldType_SInt64:
case kUpb_FieldType_SFixed64:
return kUpb_CType_Int64;
case kUpb_FieldType_Int32:
case kUpb_FieldType_SFixed32:
case kUpb_FieldType_SInt32:
return kUpb_CType_Int32;
case kUpb_FieldType_UInt64:
case kUpb_FieldType_Fixed64:
return kUpb_CType_UInt64;
case kUpb_FieldType_UInt32:
case kUpb_FieldType_Fixed32:
return kUpb_CType_UInt32;
case kUpb_FieldType_Enum:
return kUpb_CType_Enum;
case kUpb_FieldType_Bool:
return kUpb_CType_Bool;
case kUpb_FieldType_String:
return kUpb_CType_String;
case kUpb_FieldType_Bytes:
return kUpb_CType_Bytes;
case kUpb_FieldType_Group:
case kUpb_FieldType_Message:
return kUpb_CType_Message;
}
UPB_UNREACHABLE();
}
upb_FieldType upb_FieldDef_Type(const upb_FieldDef* f) { return f->type_; }
uint32_t upb_FieldDef_Index(const upb_FieldDef* f) { return f->index_; }
upb_Label upb_FieldDef_Label(const upb_FieldDef* f) { return f->label_; }
uint32_t upb_FieldDef_Number(const upb_FieldDef* f) { return f->number_; }
bool upb_FieldDef_IsExtension(const upb_FieldDef* f) {
return f->is_extension_;
}
bool upb_FieldDef_IsPacked(const upb_FieldDef* f) { return f->packed_; }
const char* upb_FieldDef_Name(const upb_FieldDef* f) {
return shortdefname(f->full_name);
}
const char* upb_FieldDef_JsonName(const upb_FieldDef* f) {
return f->json_name;
}
bool upb_FieldDef_HasJsonName(const upb_FieldDef* f) {
return f->has_json_name_;
}
const upb_FileDef* upb_FieldDef_File(const upb_FieldDef* f) { return f->file; }
const upb_MessageDef* upb_FieldDef_ContainingType(const upb_FieldDef* f) {
return f->msgdef;
}
const upb_MessageDef* upb_FieldDef_ExtensionScope(const upb_FieldDef* f) {
return f->is_extension_ ? f->scope.extension_scope : NULL;
}
const upb_OneofDef* upb_FieldDef_ContainingOneof(const upb_FieldDef* f) {
return f->is_extension_ ? NULL : f->scope.oneof;
}
const upb_OneofDef* upb_FieldDef_RealContainingOneof(const upb_FieldDef* f) {
const upb_OneofDef* oneof = upb_FieldDef_ContainingOneof(f);
if (!oneof || upb_OneofDef_IsSynthetic(oneof)) return NULL;
return oneof;
}
upb_MessageValue upb_FieldDef_Default(const upb_FieldDef* f) {
UPB_ASSERT(!upb_FieldDef_IsSubMessage(f));
upb_MessageValue ret;
switch (upb_FieldDef_CType(f)) {
case kUpb_CType_Bool:
return (upb_MessageValue){.bool_val = f->defaultval.boolean};
case kUpb_CType_Int64:
return (upb_MessageValue){.int64_val = f->defaultval.sint};
case kUpb_CType_UInt64:
return (upb_MessageValue){.uint64_val = f->defaultval.uint};
case kUpb_CType_Enum:
case kUpb_CType_Int32:
return (upb_MessageValue){.int32_val = (int32_t)f->defaultval.sint};
case kUpb_CType_UInt32:
return (upb_MessageValue){.uint32_val = (uint32_t)f->defaultval.uint};
case kUpb_CType_Float:
return (upb_MessageValue){.float_val = f->defaultval.flt};
case kUpb_CType_Double:
return (upb_MessageValue){.double_val = f->defaultval.dbl};
case kUpb_CType_String:
case kUpb_CType_Bytes: {
str_t* str = f->defaultval.str;
if (str) {
return (upb_MessageValue){
.str_val = (upb_StringView){.data = str->str, .size = str->len}};
} else {
return (upb_MessageValue){
.str_val = (upb_StringView){.data = NULL, .size = 0}};
}
}
default:
UPB_UNREACHABLE();
}
return ret;
}
const upb_MessageDef* upb_FieldDef_MessageSubDef(const upb_FieldDef* f) {
return upb_FieldDef_CType(f) == kUpb_CType_Message ? f->sub.msgdef : NULL;
}
const upb_EnumDef* upb_FieldDef_EnumSubDef(const upb_FieldDef* f) {
return upb_FieldDef_CType(f) == kUpb_CType_Enum ? f->sub.enumdef : NULL;
}
const upb_MiniTable_Field* upb_FieldDef_MiniTable(const upb_FieldDef* f) {
UPB_ASSERT(!upb_FieldDef_IsExtension(f));
return &f->msgdef->layout->fields[f->layout_index];
}
const upb_MiniTable_Extension* _upb_FieldDef_ExtensionMiniTable(
const upb_FieldDef* f) {
UPB_ASSERT(upb_FieldDef_IsExtension(f));
return f->file->ext_layouts[f->layout_index];
}
bool _upb_FieldDef_IsProto3Optional(const upb_FieldDef* f) {
return f->proto3_optional_;
}
bool upb_FieldDef_IsSubMessage(const upb_FieldDef* f) {
return upb_FieldDef_CType(f) == kUpb_CType_Message;
}
bool upb_FieldDef_IsString(const upb_FieldDef* f) {
return upb_FieldDef_CType(f) == kUpb_CType_String ||
upb_FieldDef_CType(f) == kUpb_CType_Bytes;
}
bool upb_FieldDef_IsRepeated(const upb_FieldDef* f) {
return upb_FieldDef_Label(f) == kUpb_Label_Repeated;
}
bool upb_FieldDef_IsPrimitive(const upb_FieldDef* f) {
return !upb_FieldDef_IsString(f) && !upb_FieldDef_IsSubMessage(f);
}
bool upb_FieldDef_IsMap(const upb_FieldDef* f) {
return upb_FieldDef_IsRepeated(f) && upb_FieldDef_IsSubMessage(f) &&
upb_MessageDef_IsMapEntry(upb_FieldDef_MessageSubDef(f));
}
bool upb_FieldDef_HasDefault(const upb_FieldDef* f) { return f->has_default; }
bool upb_FieldDef_HasSubDef(const upb_FieldDef* f) {
return upb_FieldDef_IsSubMessage(f) ||
upb_FieldDef_CType(f) == kUpb_CType_Enum;
}
bool upb_FieldDef_HasPresence(const upb_FieldDef* f) {
if (upb_FieldDef_IsRepeated(f)) return false;
return upb_FieldDef_IsSubMessage(f) || upb_FieldDef_ContainingOneof(f) ||
f->file->syntax == kUpb_Syntax_Proto2;
}
static bool between(int32_t x, int32_t low, int32_t high) {
return x >= low && x <= high;
}
bool upb_FieldDef_checklabel(int32_t label) { return between(label, 1, 3); }
bool upb_FieldDef_checktype(int32_t type) { return between(type, 1, 11); }
bool upb_FieldDef_checkintfmt(int32_t fmt) { return between(fmt, 1, 3); }
bool upb_FieldDef_checkdescriptortype(int32_t type) {
return between(type, 1, 18);
}
/* upb_MessageDef
* *****************************************************************/
const google_protobuf_MessageOptions* upb_MessageDef_Options(
const upb_MessageDef* m) {
return m->opts;
}
bool upb_MessageDef_HasOptions(const upb_MessageDef* m) {
return m->opts != (void*)opt_default;
}
const char* upb_MessageDef_FullName(const upb_MessageDef* m) {
return m->full_name;
}
const upb_FileDef* upb_MessageDef_File(const upb_MessageDef* m) {
return m->file;
}
const upb_MessageDef* upb_MessageDef_ContainingType(const upb_MessageDef* m) {
return m->containing_type;
}
const char* upb_MessageDef_Name(const upb_MessageDef* m) {
return shortdefname(m->full_name);
}
upb_Syntax upb_MessageDef_Syntax(const upb_MessageDef* m) {
return m->file->syntax;
}
const upb_FieldDef* upb_MessageDef_FindFieldByNumber(const upb_MessageDef* m,
uint32_t i) {
upb_value val;
return upb_inttable_lookup(&m->itof, i, &val) ? upb_value_getconstptr(val)
: NULL;
}
const upb_FieldDef* upb_MessageDef_FindFieldByNameWithSize(
const upb_MessageDef* m, const char* name, size_t len) {
upb_value val;
if (!upb_strtable_lookup2(&m->ntof, name, len, &val)) {
return NULL;
}
return unpack_def(val, UPB_DEFTYPE_FIELD);
}
const upb_OneofDef* upb_MessageDef_FindOneofByNameWithSize(
const upb_MessageDef* m, const char* name, size_t len) {
upb_value val;
if (!upb_strtable_lookup2(&m->ntof, name, len, &val)) {
return NULL;
}
return unpack_def(val, UPB_DEFTYPE_ONEOF);
}
bool upb_MessageDef_FindByNameWithSize(const upb_MessageDef* m,
const char* name, size_t len,
const upb_FieldDef** out_f,
const upb_OneofDef** out_o) {
upb_value val;
if (!upb_strtable_lookup2(&m->ntof, name, len, &val)) {
return false;
}
const upb_FieldDef* f = unpack_def(val, UPB_DEFTYPE_FIELD);
const upb_OneofDef* o = unpack_def(val, UPB_DEFTYPE_ONEOF);
if (out_f) *out_f = f;
if (out_o) *out_o = o;
return f || o; /* False if this was a JSON name. */
}
const upb_FieldDef* upb_MessageDef_FindByJsonNameWithSize(
const upb_MessageDef* m, const char* name, size_t len) {
upb_value val;
const upb_FieldDef* f;
if (!upb_strtable_lookup2(&m->ntof, name, len, &val)) {
return NULL;
}
f = unpack_def(val, UPB_DEFTYPE_FIELD);
if (!f) f = unpack_def(val, UPB_DEFTYPE_FIELD_JSONNAME);
return f;
}
int upb_MessageDef_numfields(const upb_MessageDef* m) { return m->field_count; }
int upb_MessageDef_numoneofs(const upb_MessageDef* m) { return m->oneof_count; }
int upb_MessageDef_numrealoneofs(const upb_MessageDef* m) {
return m->real_oneof_count;
}
int upb_MessageDef_ExtensionRangeCount(const upb_MessageDef* m) {
return m->ext_range_count;
}
int upb_MessageDef_ReservedRangeCount(const upb_MessageDef* m) {
return m->res_range_count;
}
int upb_MessageDef_ReservedNameCount(const upb_MessageDef* m) {
return m->res_name_count;
}
int upb_MessageDef_FieldCount(const upb_MessageDef* m) {
return m->field_count;
}
int upb_MessageDef_OneofCount(const upb_MessageDef* m) {
return m->oneof_count;
}
int upb_MessageDef_NestedMessageCount(const upb_MessageDef* m) {
return m->nested_msg_count;
}
int upb_MessageDef_NestedEnumCount(const upb_MessageDef* m) {
return m->nested_enum_count;
}
int upb_MessageDef_NestedExtensionCount(const upb_MessageDef* m) {
return m->nested_ext_count;
}
int upb_MessageDef_realoneofcount(const upb_MessageDef* m) {
return m->real_oneof_count;
}
const upb_MiniTable* upb_MessageDef_MiniTable(const upb_MessageDef* m) {
return m->layout;
}
const upb_ExtensionRange* upb_MessageDef_ExtensionRange(const upb_MessageDef* m,
int i) {
UPB_ASSERT(0 <= i && i < m->ext_range_count);
return &m->ext_ranges[i];
}
upb_MessageReservedRange* _upb_MessageReservedRange_At(
const upb_MessageReservedRange* r, int i) {
return (upb_MessageReservedRange*)&r[i];
}
const upb_MessageReservedRange* upb_MessageDef_ReservedRange(
const upb_MessageDef* m, int i) {
UPB_ASSERT(0 <= i && i < m->res_range_count);
return _upb_MessageReservedRange_At(m->res_ranges, i);
}
upb_StringView upb_MessageDef_ReservedName(const upb_MessageDef* m, int i) {
UPB_ASSERT(0 <= i && i < m->res_name_count);
return m->res_names[i];
}
int32_t upb_MessageReservedRange_Start(const upb_MessageReservedRange* r) {
return r->start;
}
int32_t upb_MessageReservedRange_End(const upb_MessageReservedRange* r) {
return r->end;
}
upb_MessageReservedRange* _upb_MessageReservedRanges_New(
symtab_addctx* ctx, int n,
const google_protobuf_DescriptorProto_ReservedRange* const* protos,
const upb_MessageDef* m) {
upb_MessageReservedRange* r =
upb_Arena_Malloc(ctx->arena, sizeof(upb_MessageReservedRange) * n);
for (int i = 0; i < n; i++) {
const int32_t start = google_protobuf_DescriptorProto_ReservedRange_start(protos[i]);
const int32_t end = google_protobuf_DescriptorProto_ReservedRange_end(protos[i]);
const int32_t max = kUpb_MaxFieldNumber + 1;
// A full validation would also check that each range is disjoint, and that
// none of the fields overlap with the extension ranges, but we are just
// sanity checking here.
if (start < 1 || end <= start || end > max) {
symtab_errf(ctx,
"Reserved range (%d, %d) is invalid, message=%s\n",
(int)start, (int)end, upb_MessageDef_FullName(m));
}
r[i].start = start;
r[i].end = end;
}
return r;
}
const upb_FieldDef* upb_MessageDef_Field(const upb_MessageDef* m, int i) {
UPB_ASSERT(0 <= i && i < m->field_count);
return &m->fields[i];
}
const upb_OneofDef* upb_MessageDef_Oneof(const upb_MessageDef* m, int i) {
UPB_ASSERT(0 <= i && i < m->oneof_count);
return &m->oneofs[i];
}
const upb_MessageDef* upb_MessageDef_NestedMessage(const upb_MessageDef* m,
int i) {
UPB_ASSERT(0 <= i && i < m->nested_msg_count);
return &m->nested_msgs[i];
}
const upb_EnumDef* upb_MessageDef_NestedEnum(const upb_MessageDef* m, int i) {
UPB_ASSERT(0 <= i && i < m->nested_enum_count);
return &m->nested_enums[i];
}
const upb_FieldDef* upb_MessageDef_NestedExtension(const upb_MessageDef* m,
int i) {
UPB_ASSERT(0 <= i && i < m->nested_ext_count);
return &m->nested_exts[i];
}
upb_WellKnown upb_MessageDef_WellKnownType(const upb_MessageDef* m) {
return m->well_known_type;
}
/* upb_OneofDef ***************************************************************/
const google_protobuf_OneofOptions* upb_OneofDef_Options(
const upb_OneofDef* o) {
return o->opts;
}
bool upb_OneofDef_HasOptions(const upb_OneofDef* o) {
return o->opts != (void*)opt_default;
}
const char* upb_OneofDef_Name(const upb_OneofDef* o) {
return shortdefname(o->full_name);
}
const upb_MessageDef* upb_OneofDef_ContainingType(const upb_OneofDef* o) {
return o->parent;
}
int upb_OneofDef_FieldCount(const upb_OneofDef* o) { return o->field_count; }
const upb_FieldDef* upb_OneofDef_Field(const upb_OneofDef* o, int i) {
UPB_ASSERT(i < o->field_count);
return o->fields[i];
}
int upb_OneofDef_numfields(const upb_OneofDef* o) { return o->field_count; }
uint32_t upb_OneofDef_Index(const upb_OneofDef* o) {
// Compute index in our parent's array.
return o - o->parent->oneofs;
}
bool upb_OneofDef_IsSynthetic(const upb_OneofDef* o) { return o->synthetic; }
const upb_FieldDef* upb_OneofDef_LookupNameWithSize(const upb_OneofDef* o,
const char* name,
size_t length) {
upb_value val;
return upb_strtable_lookup2(&o->ntof, name, length, &val)
? upb_value_getptr(val)
: NULL;
}
const upb_FieldDef* upb_OneofDef_LookupNumber(const upb_OneofDef* o,
uint32_t num) {
upb_value val;
return upb_inttable_lookup(&o->itof, num, &val) ? upb_value_getptr(val)
: NULL;
}
/* upb_FileDef ****************************************************************/
const google_protobuf_FileOptions* upb_FileDef_Options(const upb_FileDef* f) {
return f->opts;
}
bool upb_FileDef_HasOptions(const upb_FileDef* f) {
return f->opts != (void*)opt_default;
}
const char* upb_FileDef_Name(const upb_FileDef* f) { return f->name; }
const char* upb_FileDef_Package(const upb_FileDef* f) {
return f->package ? f->package : "";
}
upb_Syntax upb_FileDef_Syntax(const upb_FileDef* f) { return f->syntax; }
int upb_FileDef_TopLevelMessageCount(const upb_FileDef* f) {
return f->top_lvl_msg_count;
}
int upb_FileDef_DependencyCount(const upb_FileDef* f) { return f->dep_count; }
int upb_FileDef_PublicDependencyCount(const upb_FileDef* f) {
return f->public_dep_count;
}
int upb_FileDef_WeakDependencyCount(const upb_FileDef* f) {
return f->weak_dep_count;
}
const int32_t* _upb_FileDef_PublicDependencyIndexes(const upb_FileDef* f) {
return f->public_deps;
}
const int32_t* _upb_FileDef_WeakDependencyIndexes(const upb_FileDef* f) {
return f->weak_deps;
}
int upb_FileDef_TopLevelEnumCount(const upb_FileDef* f) {
return f->top_lvl_enum_count;
}
int upb_FileDef_TopLevelExtensionCount(const upb_FileDef* f) {
return f->top_lvl_ext_count;
}
int upb_FileDef_ServiceCount(const upb_FileDef* f) { return f->service_count; }
const upb_FileDef* upb_FileDef_Dependency(const upb_FileDef* f, int i) {
UPB_ASSERT(0 <= i && i < f->dep_count);
return f->deps[i];
}
const upb_FileDef* upb_FileDef_PublicDependency(const upb_FileDef* f, int i) {
UPB_ASSERT(0 <= i && i < f->public_dep_count);
return f->deps[f->public_deps[i]];
}
const upb_FileDef* upb_FileDef_WeakDependency(const upb_FileDef* f, int i) {
UPB_ASSERT(0 <= i && i < f->public_dep_count);
return f->deps[f->weak_deps[i]];
}
const upb_MessageDef* upb_FileDef_TopLevelMessage(const upb_FileDef* f, int i) {
UPB_ASSERT(0 <= i && i < f->top_lvl_msg_count);
return &f->top_lvl_msgs[i];
}
const upb_EnumDef* upb_FileDef_TopLevelEnum(const upb_FileDef* f, int i) {
UPB_ASSERT(0 <= i && i < f->top_lvl_enum_count);
return &f->top_lvl_enums[i];
}
const upb_FieldDef* upb_FileDef_TopLevelExtension(const upb_FileDef* f, int i) {
UPB_ASSERT(0 <= i && i < f->top_lvl_ext_count);
return &f->top_lvl_exts[i];
}
const upb_ServiceDef* upb_FileDef_Service(const upb_FileDef* f, int i) {
UPB_ASSERT(0 <= i && i < f->service_count);
return &f->services[i];
}
const upb_DefPool* upb_FileDef_Pool(const upb_FileDef* f) { return f->symtab; }
/* upb_MethodDef **************************************************************/
const google_protobuf_MethodOptions* upb_MethodDef_Options(
const upb_MethodDef* m) {
return m->opts;
}
bool upb_MethodDef_HasOptions(const upb_MethodDef* m) {
return m->opts != (void*)opt_default;
}
const char* upb_MethodDef_FullName(const upb_MethodDef* m) {
return m->full_name;
}
int upb_MethodDef_Index(const upb_MethodDef* m) { return m->index; }
const char* upb_MethodDef_Name(const upb_MethodDef* m) {
return shortdefname(m->full_name);
}
const upb_ServiceDef* upb_MethodDef_Service(const upb_MethodDef* m) {
return m->service;
}
const upb_MessageDef* upb_MethodDef_InputType(const upb_MethodDef* m) {
return m->input_type;
}
const upb_MessageDef* upb_MethodDef_OutputType(const upb_MethodDef* m) {
return m->output_type;
}
bool upb_MethodDef_ClientStreaming(const upb_MethodDef* m) {
return m->client_streaming;
}
bool upb_MethodDef_ServerStreaming(const upb_MethodDef* m) {
return m->server_streaming;
}
/* upb_ServiceDef *************************************************************/
const google_protobuf_ServiceOptions* upb_ServiceDef_Options(
const upb_ServiceDef* s) {
return s->opts;
}
bool upb_ServiceDef_HasOptions(const upb_ServiceDef* s) {
return s->opts != (void*)opt_default;
}
const char* upb_ServiceDef_FullName(const upb_ServiceDef* s) {
return s->full_name;
}
const char* upb_ServiceDef_Name(const upb_ServiceDef* s) {
return shortdefname(s->full_name);
}
int upb_ServiceDef_Index(const upb_ServiceDef* s) { return s->index; }
const upb_FileDef* upb_ServiceDef_File(const upb_ServiceDef* s) {
return s->file;
}
int upb_ServiceDef_MethodCount(const upb_ServiceDef* s) {
return s->method_count;
}
const upb_MethodDef* upb_ServiceDef_Method(const upb_ServiceDef* s, int i) {
return i < 0 || i >= s->method_count ? NULL : &s->methods[i];
}
const upb_MethodDef* upb_ServiceDef_FindMethodByName(const upb_ServiceDef* s,
const char* name) {
for (int i = 0; i < s->method_count; i++) {
if (strcmp(name, upb_MethodDef_Name(&s->methods[i])) == 0) {
return &s->methods[i];
}
}
return NULL;
}
/* upb_DefPool ****************************************************************/
void upb_DefPool_Free(upb_DefPool* s) {
upb_Arena_Free(s->arena);
upb_gfree(s);
}
upb_DefPool* upb_DefPool_New(void) {
upb_DefPool* s = upb_gmalloc(sizeof(*s));
if (!s) {
return NULL;
}
s->arena = upb_Arena_New();
s->bytes_loaded = 0;
if (!upb_strtable_init(&s->syms, 32, s->arena) ||
!upb_strtable_init(&s->files, 4, s->arena) ||
!upb_inttable_init(&s->exts, s->arena)) {
goto err;
}
s->extreg = upb_ExtensionRegistry_New(s->arena);
if (!s->extreg) goto err;
return s;
err:
upb_Arena_Free(s->arena);
upb_gfree(s);
return NULL;
}
static const void* symtab_lookup(const upb_DefPool* s, const char* sym,
upb_deftype_t type) {
upb_value v;
return upb_strtable_lookup(&s->syms, sym, &v) ? unpack_def(v, type) : NULL;
}
static const void* symtab_lookup2(const upb_DefPool* s, const char* sym,
size_t size, upb_deftype_t type) {
upb_value v;
return upb_strtable_lookup2(&s->syms, sym, size, &v) ? unpack_def(v, type)
: NULL;
}
const upb_MessageDef* upb_DefPool_FindMessageByName(const upb_DefPool* s,
const char* sym) {
return symtab_lookup(s, sym, UPB_DEFTYPE_MSG);
}
const upb_MessageDef* upb_DefPool_FindMessageByNameWithSize(
const upb_DefPool* s, const char* sym, size_t len) {
return symtab_lookup2(s, sym, len, UPB_DEFTYPE_MSG);
}
const upb_EnumDef* upb_DefPool_FindEnumByName(const upb_DefPool* s,
const char* sym) {
return symtab_lookup(s, sym, UPB_DEFTYPE_ENUM);
}
const upb_EnumValueDef* upb_DefPool_FindEnumByNameval(const upb_DefPool* s,
const char* sym) {
return symtab_lookup(s, sym, UPB_DEFTYPE_ENUMVAL);
}
const upb_FileDef* upb_DefPool_FindFileByName(const upb_DefPool* s,
const char* name) {
upb_value v;
return upb_strtable_lookup(&s->files, name, &v)
? unpack_def(v, UPB_DEFTYPE_FILE)
: NULL;
}
const upb_FileDef* upb_DefPool_FindFileByNameWithSize(const upb_DefPool* s,
const char* name,
size_t len) {
upb_value v;
return upb_strtable_lookup2(&s->files, name, len, &v)
? unpack_def(v, UPB_DEFTYPE_FILE)
: NULL;
}
const upb_FieldDef* upb_DefPool_FindExtensionByNameWithSize(
const upb_DefPool* s, const char* name, size_t size) {
upb_value v;
if (!upb_strtable_lookup2(&s->syms, name, size, &v)) return NULL;
switch (deftype(v)) {
case UPB_DEFTYPE_FIELD:
return unpack_def(v, UPB_DEFTYPE_FIELD);
case UPB_DEFTYPE_MSG: {
const upb_MessageDef* m = unpack_def(v, UPB_DEFTYPE_MSG);
return m->in_message_set ? &m->nested_exts[0] : NULL;
}
default:
break;
}
return NULL;
}
const upb_FieldDef* upb_DefPool_FindExtensionByName(const upb_DefPool* s,
const char* sym) {
return upb_DefPool_FindExtensionByNameWithSize(s, sym, strlen(sym));
}
const upb_ServiceDef* upb_DefPool_FindServiceByName(const upb_DefPool* s,
const char* name) {
return symtab_lookup(s, name, UPB_DEFTYPE_SERVICE);
}
const upb_ServiceDef* upb_DefPool_FindServiceByNameWithSize(
const upb_DefPool* s, const char* name, size_t size) {
return symtab_lookup2(s, name, size, UPB_DEFTYPE_SERVICE);
}
const upb_FileDef* upb_DefPool_FindFileContainingSymbol(const upb_DefPool* s,
const char* name) {
upb_value v;
// TODO(haberman): non-extension fields and oneofs.
if (upb_strtable_lookup(&s->syms, name, &v)) {
switch (deftype(v)) {
case UPB_DEFTYPE_EXT: {
const upb_FieldDef* f = unpack_def(v, UPB_DEFTYPE_EXT);
return upb_FieldDef_File(f);
}
case UPB_DEFTYPE_MSG: {
const upb_MessageDef* m = unpack_def(v, UPB_DEFTYPE_MSG);
return upb_MessageDef_File(m);
}
case UPB_DEFTYPE_ENUM: {
const upb_EnumDef* e = unpack_def(v, UPB_DEFTYPE_ENUM);
return upb_EnumDef_File(e);
}
case UPB_DEFTYPE_ENUMVAL: {
const upb_EnumValueDef* ev = unpack_def(v, UPB_DEFTYPE_ENUMVAL);
return upb_EnumDef_File(upb_EnumValueDef_Enum(ev));
}
case UPB_DEFTYPE_SERVICE: {
const upb_ServiceDef* service = unpack_def(v, UPB_DEFTYPE_SERVICE);
return upb_ServiceDef_File(service);
}
default:
UPB_UNREACHABLE();
}
}
const char* last_dot = strrchr(name, '.');
if (last_dot) {
const upb_MessageDef* parent =
upb_DefPool_FindMessageByNameWithSize(s, name, last_dot - name);
if (parent) {
const char* shortname = last_dot + 1;
if (upb_MessageDef_FindByNameWithSize(parent, shortname,
strlen(shortname), NULL, NULL)) {
return upb_MessageDef_File(parent);
}
}
}
return NULL;
}
/* Code to build defs from descriptor protos. *********************************/
/* There is a question of how much validation to do here. It will be difficult
* to perfectly match the amount of validation performed by proto2. But since
* this code is used to directly build defs from Ruby (for example) we do need
* to validate important constraints like uniqueness of names and numbers. */
#define CHK_OOM(x) \
if (!(x)) { \
symtab_oomerr(ctx); \
}
UPB_NORETURN UPB_NOINLINE static void symtab_oomerr(symtab_addctx* ctx) {
upb_Status_setoom(ctx->status);
UPB_LONGJMP(ctx->err, 1);
}
void* symtab_alloc(symtab_addctx* ctx, size_t bytes) {
if (bytes == 0) return NULL;
void* ret = upb_Arena_Malloc(ctx->arena, bytes);
if (!ret) symtab_oomerr(ctx);
return ret;
}
// We want to copy the options verbatim into the destination options proto.
// We use serialize+parse as our deep copy.
#define SET_OPTIONS(target, desc_type, options_type, proto) \
if (google_protobuf_##desc_type##_has_options(proto)) { \
size_t size; \
char* pb = google_protobuf_##options_type##_serialize( \
google_protobuf_##desc_type##_options(proto), ctx->tmp_arena, &size); \
CHK_OOM(pb); \
target = google_protobuf_##options_type##_parse(pb, size, ctx->arena); \
CHK_OOM(target); \
} else { \
target = (const google_protobuf_##options_type*)opt_default; \
}
static void check_ident(symtab_addctx* ctx, upb_StringView name, bool full) {
const char* str = name.data;
size_t len = name.size;
bool start = true;
size_t i;
for (i = 0; i < len; i++) {
char c = str[i];
if (c == '.') {
if (start || !full) {
symtab_errf(ctx, "invalid name: unexpected '.' (%.*s)", (int)len, str);
}
start = true;
} else if (start) {
if (!upb_isletter(c)) {
symtab_errf(
ctx,
"invalid name: path components must start with a letter (%.*s)",
(int)len, str);
}
start = false;
} else {
if (!upb_isalphanum(c)) {
symtab_errf(ctx, "invalid name: non-alphanumeric character (%.*s)",
(int)len, str);
}
}
}
if (start) {
symtab_errf(ctx, "invalid name: empty part (%.*s)", (int)len, str);
}
}
static size_t div_round_up(size_t n, size_t d) { return (n + d - 1) / d; }
static size_t upb_MessageValue_sizeof(upb_CType type) {
switch (type) {
case kUpb_CType_Double:
case kUpb_CType_Int64:
case kUpb_CType_UInt64:
return 8;
case kUpb_CType_Enum:
case kUpb_CType_Int32:
case kUpb_CType_UInt32:
case kUpb_CType_Float:
return 4;
case kUpb_CType_Bool:
return 1;
case kUpb_CType_Message:
return sizeof(void*);
case kUpb_CType_Bytes:
case kUpb_CType_String:
return sizeof(upb_StringView);
}
UPB_UNREACHABLE();
}
static uint8_t upb_msg_fielddefsize(const upb_FieldDef* f) {
if (upb_MessageDef_IsMapEntry(upb_FieldDef_ContainingType(f))) {
upb_MapEntry ent;
UPB_ASSERT(sizeof(ent.k) == sizeof(ent.v));
return sizeof(ent.k);
} else if (upb_FieldDef_IsRepeated(f)) {
return sizeof(void*);
} else {
return upb_MessageValue_sizeof(upb_FieldDef_CType(f));
}
}
static uint32_t upb_MiniTable_place(symtab_addctx* ctx, upb_MiniTable* l,
size_t size, const upb_MessageDef* m) {
size_t ofs = UPB_ALIGN_UP(l->size, size);
size_t next = ofs + size;
if (next > UINT16_MAX) {
symtab_errf(ctx, "size of message %s exceeded max size of %zu bytes",
upb_MessageDef_FullName(m), (size_t)UINT16_MAX);
}
l->size = next;
return ofs;
}
static int field_number_cmp(const void* p1, const void* p2) {
const upb_MiniTable_Field* f1 = p1;
const upb_MiniTable_Field* f2 = p2;
return f1->number - f2->number;
}
static void assign_layout_indices(const upb_MessageDef* m, upb_MiniTable* l,
upb_MiniTable_Field* fields) {
int i;
int n = upb_MessageDef_numfields(m);
int dense_below = 0;
for (i = 0; i < n; i++) {
upb_FieldDef* f =
(upb_FieldDef*)upb_MessageDef_FindFieldByNumber(m, fields[i].number);
UPB_ASSERT(f);
f->layout_index = i;
if (i < UINT8_MAX && fields[i].number == i + 1 &&
(i == 0 || fields[i - 1].number == i)) {
dense_below = i + 1;
}
}
l->dense_below = dense_below;
}
static uint8_t map_descriptortype(const upb_FieldDef* f) {
uint8_t type = upb_FieldDef_Type(f);
/* See TableDescriptorType() in upbc/generator.cc for details and
* rationale of these exceptions. */
if (type == kUpb_FieldType_String && f->file->syntax == kUpb_Syntax_Proto2) {
return kUpb_FieldType_Bytes;
} else if (type == kUpb_FieldType_Enum &&
(f->sub.enumdef->file->syntax == kUpb_Syntax_Proto3 ||
UPB_TREAT_PROTO2_ENUMS_LIKE_PROTO3 ||
// TODO(https://github.com/protocolbuffers/upb/issues/541):
// fix map enum values to check for unknown enum values and put
// them in the unknown field set.
upb_MessageDef_IsMapEntry(upb_FieldDef_ContainingType(f)))) {
return kUpb_FieldType_Int32;
}
return type;
}
static void fill_fieldlayout(upb_MiniTable_Field* field,
const upb_FieldDef* f) {
field->number = upb_FieldDef_Number(f);
field->descriptortype = map_descriptortype(f);
if (upb_FieldDef_IsMap(f)) {
field->mode =
kUpb_FieldMode_Map | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift);
} else if (upb_FieldDef_IsRepeated(f)) {
field->mode =
kUpb_FieldMode_Array | (kUpb_FieldRep_Pointer << kUpb_FieldRep_Shift);
} else {
/* Maps descriptor type -> elem_size_lg2. */
static const uint8_t sizes[] = {
-1, /* invalid descriptor type */
kUpb_FieldRep_8Byte, /* DOUBLE */
kUpb_FieldRep_4Byte, /* FLOAT */
kUpb_FieldRep_8Byte, /* INT64 */
kUpb_FieldRep_8Byte, /* UINT64 */
kUpb_FieldRep_4Byte, /* INT32 */
kUpb_FieldRep_8Byte, /* FIXED64 */
kUpb_FieldRep_4Byte, /* FIXED32 */
kUpb_FieldRep_1Byte, /* BOOL */
kUpb_FieldRep_StringView, /* STRING */
kUpb_FieldRep_Pointer, /* GROUP */
kUpb_FieldRep_Pointer, /* MESSAGE */
kUpb_FieldRep_StringView, /* BYTES */
kUpb_FieldRep_4Byte, /* UINT32 */
kUpb_FieldRep_4Byte, /* ENUM */
kUpb_FieldRep_4Byte, /* SFIXED32 */
kUpb_FieldRep_8Byte, /* SFIXED64 */
kUpb_FieldRep_4Byte, /* SINT32 */
kUpb_FieldRep_8Byte, /* SINT64 */
};
field->mode = kUpb_FieldMode_Scalar |
(sizes[field->descriptortype] << kUpb_FieldRep_Shift);
}
if (upb_FieldDef_IsPacked(f)) {
field->mode |= kUpb_LabelFlags_IsPacked;
}
if (upb_FieldDef_IsExtension(f)) {
field->mode |= kUpb_LabelFlags_IsExtension;
}
}
/* This function is the dynamic equivalent of message_layout.{cc,h} in upbc.
* It computes a dynamic layout for all of the fields in |m|. */
static void make_layout(symtab_addctx* ctx, const upb_MessageDef* m) {
upb_MiniTable* l = (upb_MiniTable*)m->layout;
size_t field_count = upb_MessageDef_numfields(m);
size_t sublayout_count = 0;
upb_MiniTable_Sub* subs;
upb_MiniTable_Field* fields;
memset(l, 0, sizeof(*l) + sizeof(_upb_FastTable_Entry));
/* Count sub-messages. */
for (size_t i = 0; i < field_count; i++) {
const upb_FieldDef* f = &m->fields[i];
if (upb_FieldDef_IsSubMessage(f)) {
sublayout_count++;
}
if (upb_FieldDef_CType(f) == kUpb_CType_Enum &&
f->sub.enumdef->file->syntax == kUpb_Syntax_Proto2) {
sublayout_count++;
}
}
fields = symtab_alloc(ctx, field_count * sizeof(*fields));
subs = symtab_alloc(ctx, sublayout_count * sizeof(*subs));
l->field_count = upb_MessageDef_numfields(m);
l->fields = fields;
l->subs = subs;
l->table_mask = 0;
l->required_count = 0;
if (upb_MessageDef_ExtensionRangeCount(m) > 0) {
if (google_protobuf_MessageOptions_message_set_wire_format(m->opts)) {
l->ext = kUpb_ExtMode_IsMessageSet;
} else {
l->ext = kUpb_ExtMode_Extendable;
}
} else {
l->ext = kUpb_ExtMode_NonExtendable;
}
/* TODO(haberman): initialize fast tables so that reflection-based parsing
* can get the same speeds as linked-in types. */
l->fasttable[0].field_parser = &fastdecode_generic;
l->fasttable[0].field_data = 0;
if (upb_MessageDef_IsMapEntry(m)) {
/* TODO(haberman): refactor this method so this special case is more
* elegant. */
const upb_FieldDef* key = upb_MessageDef_FindFieldByNumber(m, 1);
const upb_FieldDef* val = upb_MessageDef_FindFieldByNumber(m, 2);
if (key == NULL || val == NULL) {
symtab_errf(ctx, "Malformed map entry from message: %s",
upb_MessageDef_FullName(m));
}
fields[0].number = 1;
fields[1].number = 2;
fields[0].mode = kUpb_FieldMode_Scalar;
fields[1].mode = kUpb_FieldMode_Scalar;
fields[0].presence = 0;
fields[1].presence = 0;
fields[0].descriptortype = map_descriptortype(key);
fields[1].descriptortype = map_descriptortype(val);
fields[0].offset = 0;
fields[1].offset = sizeof(upb_StringView);
fields[1].submsg_index = 0;
if (upb_FieldDef_CType(val) == kUpb_CType_Message) {
subs[0].submsg = upb_FieldDef_MessageSubDef(val)->layout;
}
upb_FieldDef* fielddefs = (upb_FieldDef*)&m->fields[0];
UPB_ASSERT(fielddefs[0].number_ == 1);
UPB_ASSERT(fielddefs[1].number_ == 2);
fielddefs[0].layout_index = 0;
fielddefs[1].layout_index = 1;
l->field_count = 2;
l->size = 2 * sizeof(upb_StringView);
l->size = UPB_ALIGN_UP(l->size, 8);
l->dense_below = 2;
return;
}
/* Allocate data offsets in three stages:
*
* 1. hasbits.
* 2. regular fields.
* 3. oneof fields.
*
* OPT: There is a lot of room for optimization here to minimize the size.
*/
/* Assign hasbits for required fields first. */
size_t hasbit = 0;
for (int i = 0; i < m->field_count; i++) {
const upb_FieldDef* f = &m->fields[i];
upb_MiniTable_Field* field = &fields[upb_FieldDef_Index(f)];
if (upb_FieldDef_Label(f) == kUpb_Label_Required) {
field->presence = ++hasbit;
if (hasbit >= 63) {
symtab_errf(ctx, "Message with >=63 required fields: %s",
upb_MessageDef_FullName(m));
}
l->required_count++;
}
}
/* Allocate hasbits and set basic field attributes. */
sublayout_count = 0;
for (int i = 0; i < m->field_count; i++) {
const upb_FieldDef* f = &m->fields[i];
upb_MiniTable_Field* field = &fields[upb_FieldDef_Index(f)];
fill_fieldlayout(field, f);
if (field->descriptortype == kUpb_FieldType_Message ||
field->descriptortype == kUpb_FieldType_Group) {
field->submsg_index = sublayout_count++;
subs[field->submsg_index].submsg = upb_FieldDef_MessageSubDef(f)->layout;
} else if (field->descriptortype == kUpb_FieldType_Enum) {
field->submsg_index = sublayout_count++;
subs[field->submsg_index].subenum = upb_FieldDef_EnumSubDef(f)->layout;
UPB_ASSERT(subs[field->submsg_index].subenum);
}
if (upb_FieldDef_Label(f) == kUpb_Label_Required) {
/* Hasbit was already assigned. */
} else if (upb_FieldDef_HasPresence(f) &&
!upb_FieldDef_RealContainingOneof(f)) {
/* We don't use hasbit 0, so that 0 can indicate "no presence" in the
* table. This wastes one hasbit, but we don't worry about it for now. */
field->presence = ++hasbit;
} else {
field->presence = 0;
}
}
/* Account for space used by hasbits. */
l->size = hasbit ? div_round_up(hasbit + 1, 8) : 0;
/* Allocate non-oneof fields. */
for (int i = 0; i < m->field_count; i++) {
const upb_FieldDef* f = &m->fields[i];
size_t field_size = upb_msg_fielddefsize(f);
size_t index = upb_FieldDef_Index(f);
if (upb_FieldDef_RealContainingOneof(f)) {
/* Oneofs are handled separately below. */
continue;
}
fields[index].offset = upb_MiniTable_place(ctx, l, field_size, m);
}
/* Allocate oneof fields. Each oneof field consists of a uint32 for the case
* and space for the actual data. */
for (int i = 0; i < m->oneof_count; i++) {
const upb_OneofDef* o = &m->oneofs[i];
size_t case_size = sizeof(uint32_t); /* Could potentially optimize this. */
size_t field_size = 0;
uint32_t case_offset;
uint32_t data_offset;
if (upb_OneofDef_IsSynthetic(o)) continue;
if (o->field_count == 0) {
symtab_errf(ctx, "Oneof must have at least one field (%s)", o->full_name);
}
/* Calculate field size: the max of all field sizes. */
for (int j = 0; j < o->field_count; j++) {
const upb_FieldDef* f = o->fields[j];
field_size = UPB_MAX(field_size, upb_msg_fielddefsize(f));
}
/* Align and allocate case offset. */
case_offset = upb_MiniTable_place(ctx, l, case_size, m);
data_offset = upb_MiniTable_place(ctx, l, field_size, m);
for (int i = 0; i < o->field_count; i++) {
const upb_FieldDef* f = o->fields[i];
fields[upb_FieldDef_Index(f)].offset = data_offset;
fields[upb_FieldDef_Index(f)].presence = ~case_offset;
}
}
/* Size of the entire structure should be a multiple of its greatest
* alignment. TODO: track overall alignment for real? */
l->size = UPB_ALIGN_UP(l->size, 8);
/* Sort fields by number. */
if (fields) {
qsort(fields, upb_MessageDef_numfields(m), sizeof(*fields),
field_number_cmp);
}
assign_layout_indices(m, l, fields);
}
static char* strviewdup(symtab_addctx* ctx, upb_StringView view) {
char* ret = upb_strdup2(view.data, view.size, ctx->arena);
CHK_OOM(ret);
return ret;
}
static bool streql2(const char* a, size_t n, const char* b) {
return n == strlen(b) && memcmp(a, b, n) == 0;
}
static bool streql_view(upb_StringView view, const char* b) {
return streql2(view.data, view.size, b);
}
static const char* makefullname(symtab_addctx* ctx, const char* prefix,
upb_StringView name) {
if (prefix) {
/* ret = prefix + '.' + name; */
size_t n = strlen(prefix);
char* ret = symtab_alloc(ctx, n + name.size + 2);
strcpy(ret, prefix);
ret[n] = '.';
memcpy(&ret[n + 1], name.data, name.size);
ret[n + 1 + name.size] = '\0';
return ret;
} else {
return strviewdup(ctx, name);
}
}
static void finalize_oneofs(symtab_addctx* ctx, upb_MessageDef* m) {
int i;
int synthetic_count = 0;
upb_OneofDef* mutable_oneofs = (upb_OneofDef*)m->oneofs;
for (i = 0; i < m->oneof_count; i++) {
upb_OneofDef* o = &mutable_oneofs[i];
if (o->synthetic && o->field_count != 1) {
symtab_errf(ctx, "Synthetic oneofs must have one field, not %d: %s",
o->field_count, upb_OneofDef_Name(o));
}
if (o->synthetic) {
synthetic_count++;
} else if (synthetic_count != 0) {
symtab_errf(ctx, "Synthetic oneofs must be after all other oneofs: %s",
upb_OneofDef_Name(o));
}
o->fields = symtab_alloc(ctx, sizeof(upb_FieldDef*) * o->field_count);
o->field_count = 0;
}
for (i = 0; i < m->field_count; i++) {
const upb_FieldDef* f = &m->fields[i];
upb_OneofDef* o = (upb_OneofDef*)upb_FieldDef_ContainingOneof(f);
if (o) {
o->fields[o->field_count++] = f;
}
}
m->real_oneof_count = m->oneof_count - synthetic_count;
}
size_t getjsonname(const char* name, char* buf, size_t len) {
size_t src, dst = 0;
bool ucase_next = false;
#define WRITE(byte) \
++dst; \
if (dst < len) \
buf[dst - 1] = byte; \
else if (dst == len) \
buf[dst - 1] = '\0'
if (!name) {
WRITE('\0');
return 0;
}
/* Implement the transformation as described in the spec:
* 1. upper case all letters after an underscore.
* 2. remove all underscores.
*/
for (src = 0; name[src]; src++) {
if (name[src] == '_') {
ucase_next = true;
continue;
}
if (ucase_next) {
WRITE(toupper(name[src]));
ucase_next = false;
} else {
WRITE(name[src]);
}
}
WRITE('\0');
return dst;
#undef WRITE
}
static char* makejsonname(symtab_addctx* ctx, const char* name) {
size_t size = getjsonname(name, NULL, 0);
char* json_name = symtab_alloc(ctx, size);
getjsonname(name, json_name, size);
return json_name;
}
/* Adds a symbol |v| to the symtab, which must be a def pointer previously
* packed with pack_def(). The def's pointer to upb_FileDef* must be set before
* adding, so we know which entries to remove if building this file fails. */
static void symtab_add(symtab_addctx* ctx, const char* name, upb_value v) {
// TODO: table should support an operation "tryinsert" to avoid the double
// lookup.
if (upb_strtable_lookup(&ctx->symtab->syms, name, NULL)) {
symtab_errf(ctx, "duplicate symbol '%s'", name);
}
size_t len = strlen(name);
CHK_OOM(upb_strtable_insert(&ctx->symtab->syms, name, len, v,
ctx->symtab->arena));
}
static bool remove_component(char* base, size_t* len) {
if (*len == 0) return false;
for (size_t i = *len - 1; i > 0; i--) {
if (base[i] == '.') {
*len = i;
return true;
}
}
*len = 0;
return true;
}
/* Given a symbol and the base symbol inside which it is defined, find the
* symbol's definition in t. */
static const void* symtab_resolveany(symtab_addctx* ctx,
const char* from_name_dbg,
const char* base, upb_StringView sym,
upb_deftype_t* type) {
const upb_strtable* t = &ctx->symtab->syms;
if (sym.size == 0) goto notfound;
upb_value v;
if (sym.data[0] == '.') {
/* Symbols starting with '.' are absolute, so we do a single lookup.
* Slice to omit the leading '.' */
if (!upb_strtable_lookup2(t, sym.data + 1, sym.size - 1, &v)) {
goto notfound;
}
} else {
/* Remove components from base until we find an entry or run out. */
size_t baselen = base ? strlen(base) : 0;
char* tmp = malloc(sym.size + baselen + 1);
while (1) {
char* p = tmp;
if (baselen) {
memcpy(p, base, baselen);
p[baselen] = '.';
p += baselen + 1;
}
memcpy(p, sym.data, sym.size);
p += sym.size;
if (upb_strtable_lookup2(t, tmp, p - tmp, &v)) {
break;
}
if (!remove_component(tmp, &baselen)) {
free(tmp);
goto notfound;
}
}
free(tmp);
}
*type = deftype(v);
return unpack_def(v, *type);
notfound:
symtab_errf(ctx, "couldn't resolve name '" UPB_STRINGVIEW_FORMAT "'",
UPB_STRINGVIEW_ARGS(sym));
}
static const void* symtab_resolve(symtab_addctx* ctx, const char* from_name_dbg,
const char* base, upb_StringView sym,
upb_deftype_t type) {
upb_deftype_t found_type;
const void* ret =
symtab_resolveany(ctx, from_name_dbg, base, sym, &found_type);
if (ret && found_type != type) {
symtab_errf(ctx,
"type mismatch when resolving %s: couldn't find "
"name " UPB_STRINGVIEW_FORMAT " with type=%d",
from_name_dbg, UPB_STRINGVIEW_ARGS(sym), (int)type);
}
return ret;
}
static void create_oneofdef(
symtab_addctx* ctx, upb_MessageDef* m,
const google_protobuf_OneofDescriptorProto* oneof_proto,
const upb_OneofDef* _o) {
upb_OneofDef* o = (upb_OneofDef*)_o;
upb_StringView name = google_protobuf_OneofDescriptorProto_name(oneof_proto);
upb_value v;
o->parent = m;
o->full_name = makefullname(ctx, m->full_name, name);
o->field_count = 0;
o->synthetic = false;
SET_OPTIONS(o->opts, OneofDescriptorProto, OneofOptions, oneof_proto);
upb_value existing_v;
if (upb_strtable_lookup2(&m->ntof, name.data, name.size, &existing_v)) {
symtab_errf(ctx, "duplicate oneof name (%s)", o->full_name);
}
v = pack_def(o, UPB_DEFTYPE_ONEOF);
CHK_OOM(upb_strtable_insert(&m->ntof, name.data, name.size, v, ctx->arena));
CHK_OOM(upb_inttable_init(&o->itof, ctx->arena));
CHK_OOM(upb_strtable_init(&o->ntof, 4, ctx->arena));
}
static str_t* newstr(symtab_addctx* ctx, const char* data, size_t len) {
str_t* ret = symtab_alloc(ctx, sizeof(*ret) + len);
CHK_OOM(ret);
ret->len = len;
if (len) memcpy(ret->str, data, len);
ret->str[len] = '\0';
return ret;
}
static bool upb_DefPool_TryGetChar(const char** src, const char* end,
char* ch) {
if (*src == end) return false;
*ch = **src;
*src += 1;
return true;
}
static char upb_DefPool_TryGetHexDigit(symtab_addctx* ctx,
const upb_FieldDef* f, const char** src,
const char* end) {
char ch;
if (!upb_DefPool_TryGetChar(src, end, &ch)) return -1;
if ('0' <= ch && ch <= '9') {
return ch - '0';
}
ch = upb_ascii_lower(ch);
if ('a' <= ch && ch <= 'f') {
return ch - 'a' + 0xa;
}
*src -= 1; // Char wasn't actually a hex digit.
return -1;
}
static char upb_DefPool_ParseHexEscape(symtab_addctx* ctx,
const upb_FieldDef* f, const char** src,
const char* end) {
char hex_digit = upb_DefPool_TryGetHexDigit(ctx, f, src, end);
if (hex_digit < 0) {
symtab_errf(ctx,
"\\x cannot be followed by non-hex digit in field '%s' default",
upb_FieldDef_FullName(f));
return 0;
}
unsigned int ret = hex_digit;
while ((hex_digit = upb_DefPool_TryGetHexDigit(ctx, f, src, end)) >= 0) {
ret = (ret << 4) | hex_digit;
}
if (ret > 0xff) {
symtab_errf(ctx, "Value of hex escape in field %s exceeds 8 bits",
upb_FieldDef_FullName(f));
return 0;
}
return ret;
}
char upb_DefPool_TryGetOctalDigit(const char** src, const char* end) {
char ch;
if (!upb_DefPool_TryGetChar(src, end, &ch)) return -1;
if ('0' <= ch && ch <= '7') {
return ch - '0';
}
*src -= 1; // Char wasn't actually an octal digit.
return -1;
}
static char upb_DefPool_ParseOctalEscape(symtab_addctx* ctx,
const upb_FieldDef* f,
const char** src, const char* end) {
char ch = 0;
for (int i = 0; i < 3; i++) {
char digit;
if ((digit = upb_DefPool_TryGetOctalDigit(src, end)) >= 0) {
ch = (ch << 3) | digit;
}
}
return ch;
}
static char upb_DefPool_ParseEscape(symtab_addctx* ctx, const upb_FieldDef* f,
const char** src, const char* end) {
char ch;
if (!upb_DefPool_TryGetChar(src, end, &ch)) {
symtab_errf(ctx, "unterminated escape sequence in field %s",
upb_FieldDef_FullName(f));
return 0;
}
switch (ch) {
case 'a':
return '\a';
case 'b':
return '\b';
case 'f':
return '\f';
case 'n':
return '\n';
case 'r':
return '\r';
case 't':
return '\t';
case 'v':
return '\v';
case '\\':
return '\\';
case '\'':
return '\'';
case '\"':
return '\"';
case '?':
return '\?';
case 'x':
case 'X':
return upb_DefPool_ParseHexEscape(ctx, f, src, end);
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
*src -= 1;
return upb_DefPool_ParseOctalEscape(ctx, f, src, end);
}
symtab_errf(ctx, "Unknown escape sequence: \\%c", ch);
}
static str_t* unescape(symtab_addctx* ctx, const upb_FieldDef* f,
const char* data, size_t len) {
// Size here is an upper bound; escape sequences could ultimately shrink it.
str_t* ret = symtab_alloc(ctx, sizeof(*ret) + len);
char* dst = &ret->str[0];
const char* src = data;
const char* end = data + len;
while (src < end) {
if (*src == '\\') {
src++;
*dst++ = upb_DefPool_ParseEscape(ctx, f, &src, end);
} else {
*dst++ = *src++;
}
}
ret->len = dst - &ret->str[0];
return ret;
}
static void parse_default(symtab_addctx* ctx, const char* str, size_t len,
upb_FieldDef* f) {
char* end;
char nullz[64];
errno = 0;
switch (upb_FieldDef_CType(f)) {
case kUpb_CType_Int32:
case kUpb_CType_Int64:
case kUpb_CType_UInt32:
case kUpb_CType_UInt64:
case kUpb_CType_Double:
case kUpb_CType_Float:
/* Standard C number parsing functions expect null-terminated strings. */
if (len >= sizeof(nullz) - 1) {
symtab_errf(ctx, "Default too long: %.*s", (int)len, str);
}
memcpy(nullz, str, len);
nullz[len] = '\0';
str = nullz;
break;
default:
break;
}
switch (upb_FieldDef_CType(f)) {
case kUpb_CType_Int32: {
long val = strtol(str, &end, 0);
if (val > INT32_MAX || val < INT32_MIN || errno == ERANGE || *end) {
goto invalid;
}
f->defaultval.sint = val;
break;
}
case kUpb_CType_Enum: {
const upb_EnumDef* e = f->sub.enumdef;
const upb_EnumValueDef* ev =
upb_EnumDef_FindValueByNameWithSize(e, str, len);
if (!ev) {
goto invalid;
}
f->defaultval.sint = ev->number;
break;
}
case kUpb_CType_Int64: {
long long val = strtoll(str, &end, 0);
if (val > INT64_MAX || val < INT64_MIN || errno == ERANGE || *end) {
goto invalid;
}
f->defaultval.sint = val;
break;
}
case kUpb_CType_UInt32: {
unsigned long val = strtoul(str, &end, 0);
if (val > UINT32_MAX || errno == ERANGE || *end) {
goto invalid;
}
f->defaultval.uint = val;
break;
}
case kUpb_CType_UInt64: {
unsigned long long val = strtoull(str, &end, 0);
if (val > UINT64_MAX || errno == ERANGE || *end) {
goto invalid;
}
f->defaultval.uint = val;
break;
}
case kUpb_CType_Double: {
double val = strtod(str, &end);
if (errno == ERANGE || *end) {
goto invalid;
}
f->defaultval.dbl = val;
break;
}
case kUpb_CType_Float: {
float val = strtof(str, &end);
if (errno == ERANGE || *end) {
goto invalid;
}
f->defaultval.flt = val;
break;
}
case kUpb_CType_Bool: {
if (streql2(str, len, "false")) {
f->defaultval.boolean = false;
} else if (streql2(str, len, "true")) {
f->defaultval.boolean = true;
} else {
goto invalid;
}
break;
}
case kUpb_CType_String:
f->defaultval.str = newstr(ctx, str, len);
break;
case kUpb_CType_Bytes:
f->defaultval.str = unescape(ctx, f, str, len);
break;
case kUpb_CType_Message:
/* Should not have a default value. */
symtab_errf(ctx, "Message should not have a default (%s)",
upb_FieldDef_FullName(f));
}
return;
invalid:
symtab_errf(ctx, "Invalid default '%.*s' for field %s of type %d", (int)len,
str, upb_FieldDef_FullName(f), (int)upb_FieldDef_Type(f));
}
static void set_default_default(symtab_addctx* ctx, upb_FieldDef* f) {
switch (upb_FieldDef_CType(f)) {
case kUpb_CType_Int32:
case kUpb_CType_Int64:
f->defaultval.sint = 0;
break;
case kUpb_CType_UInt64:
case kUpb_CType_UInt32:
f->defaultval.uint = 0;
break;
case kUpb_CType_Double:
case kUpb_CType_Float:
f->defaultval.dbl = 0;
break;
case kUpb_CType_String:
case kUpb_CType_Bytes:
f->defaultval.str = newstr(ctx, NULL, 0);
break;
case kUpb_CType_Bool:
f->defaultval.boolean = false;
break;
case kUpb_CType_Enum:
f->defaultval.sint = f->sub.enumdef->values[0].number;
case kUpb_CType_Message:
break;
}
}
static void create_fielddef(
symtab_addctx* ctx, const char* prefix, upb_MessageDef* m,
const google_protobuf_FieldDescriptorProto* field_proto,
const upb_FieldDef* _f, bool is_extension) {
upb_FieldDef* f = (upb_FieldDef*)_f;
upb_StringView name;
const char* full_name;
const char* json_name;
const char* shortname;
int32_t field_number;
f->file = ctx->file; /* Must happen prior to symtab_add(). */
if (!google_protobuf_FieldDescriptorProto_has_name(field_proto)) {
symtab_errf(ctx, "field has no name");
}
name = google_protobuf_FieldDescriptorProto_name(field_proto);
check_ident(ctx, name, false);
full_name = makefullname(ctx, prefix, name);
shortname = shortdefname(full_name);
if (google_protobuf_FieldDescriptorProto_has_json_name(field_proto)) {
json_name = strviewdup(
ctx, google_protobuf_FieldDescriptorProto_json_name(field_proto));
f->has_json_name_ = true;
} else {
json_name = makejsonname(ctx, shortname);
f->has_json_name_ = false;
}
field_number = google_protobuf_FieldDescriptorProto_number(field_proto);
f->full_name = full_name;
f->json_name = json_name;
f->label_ = (int)google_protobuf_FieldDescriptorProto_label(field_proto);
f->number_ = field_number;
f->scope.oneof = NULL;
f->proto3_optional_ =
google_protobuf_FieldDescriptorProto_proto3_optional(field_proto);
bool has_type = google_protobuf_FieldDescriptorProto_has_type(field_proto);
bool has_type_name =
google_protobuf_FieldDescriptorProto_has_type_name(field_proto);
f->type_ = (int)google_protobuf_FieldDescriptorProto_type(field_proto);
if (has_type) {
switch (f->type_) {
case kUpb_FieldType_Message:
case kUpb_FieldType_Group:
case kUpb_FieldType_Enum:
if (!has_type_name) {
symtab_errf(ctx, "field of type %d requires type name (%s)",
(int)f->type_, full_name);
}
break;
default:
if (has_type_name) {
symtab_errf(ctx, "invalid type for field with type_name set (%s, %d)",
full_name, (int)f->type_);
}
}
} else if (has_type_name) {
f->type_ =
FIELD_TYPE_UNSPECIFIED; // We'll fill this in in resolve_fielddef().
}
if (!is_extension) {
/* direct message field. */
upb_value v, field_v, json_v, existing_v;
size_t json_size;
if (field_number <= 0 || field_number > kUpb_MaxFieldNumber) {
symtab_errf(ctx, "invalid field number (%u)", field_number);
}
f->index_ = f - m->fields;
f->msgdef = m;
f->is_extension_ = false;
field_v = pack_def(f, UPB_DEFTYPE_FIELD);
json_v = pack_def(f, UPB_DEFTYPE_FIELD_JSONNAME);
v = upb_value_constptr(f);
json_size = strlen(json_name);
if (upb_strtable_lookup(&m->ntof, shortname, &existing_v)) {
symtab_errf(ctx, "duplicate field name (%s)", shortname);
}
CHK_OOM(upb_strtable_insert(&m->ntof, name.data, name.size, field_v,
ctx->arena));
if (strcmp(shortname, json_name) != 0) {
if (upb_strtable_lookup(&m->ntof, json_name, &v)) {
symtab_errf(ctx, "duplicate json_name (%s)", json_name);
} else {
CHK_OOM(upb_strtable_insert(&m->ntof, json_name, json_size, json_v,
ctx->arena));
}
}
if (upb_inttable_lookup(&m->itof, field_number, NULL)) {
symtab_errf(ctx, "duplicate field number (%u)", field_number);
}
CHK_OOM(upb_inttable_insert(&m->itof, field_number, v, ctx->arena));
if (ctx->layout) {
const upb_MiniTable_Field* fields = m->layout->fields;
int count = m->layout->field_count;
bool found = false;
for (int i = 0; i < count; i++) {
if (fields[i].number == field_number) {
f->layout_index = i;
found = true;
break;
}
}
UPB_ASSERT(found);
}
} else {
/* extension field. */
f->is_extension_ = true;
f->scope.extension_scope = m;
symtab_add(ctx, full_name, pack_def(f, UPB_DEFTYPE_EXT));
f->layout_index = ctx->ext_count++;
if (ctx->layout) {
UPB_ASSERT(ctx->file->ext_layouts[f->layout_index]->field.number ==
field_number);
}
}
if (f->type_ < kUpb_FieldType_Double || f->type_ > kUpb_FieldType_SInt64) {
symtab_errf(ctx, "invalid type for field %s (%d)", f->full_name, f->type_);
}
if (f->label_ < kUpb_Label_Optional || f->label_ > kUpb_Label_Repeated) {
symtab_errf(ctx, "invalid label for field %s (%d)", f->full_name,
f->label_);
}
/* We can't resolve the subdef or (in the case of extensions) the containing
* message yet, because it may not have been defined yet. We stash a pointer
* to the field_proto until later when we can properly resolve it. */
f->sub.unresolved = field_proto;
if (f->label_ == kUpb_Label_Required &&
f->file->syntax == kUpb_Syntax_Proto3) {
symtab_errf(ctx, "proto3 fields cannot be required (%s)", f->full_name);
}
if (google_protobuf_FieldDescriptorProto_has_oneof_index(field_proto)) {
uint32_t oneof_index = google_protobuf_FieldDescriptorProto_oneof_index(field_proto);
upb_OneofDef* oneof;
upb_value v = upb_value_constptr(f);
if (upb_FieldDef_Label(f) != kUpb_Label_Optional) {
symtab_errf(ctx, "fields in oneof must have OPTIONAL label (%s)",
f->full_name);
}
if (!m) {
symtab_errf(ctx, "oneof_index provided for extension field (%s)",
f->full_name);
}
if (oneof_index >= m->oneof_count) {
symtab_errf(ctx, "oneof_index out of range (%s)", f->full_name);
}
oneof = (upb_OneofDef*)&m->oneofs[oneof_index];
f->scope.oneof = oneof;
oneof->field_count++;
if (f->proto3_optional_) {
oneof->synthetic = true;
}
CHK_OOM(upb_inttable_insert(&oneof->itof, f->number_, v, ctx->arena));
CHK_OOM(
upb_strtable_insert(&oneof->ntof, name.data, name.size, v, ctx->arena));
} else {
if (f->proto3_optional_ && !is_extension) {
symtab_errf(ctx, "field with proto3_optional was not in a oneof (%s)",
f->full_name);
}
}
SET_OPTIONS(f->opts, FieldDescriptorProto, FieldOptions, field_proto);
if (google_protobuf_FieldOptions_has_packed(f->opts)) {
f->packed_ = google_protobuf_FieldOptions_packed(f->opts);
} else {
/* Repeated fields default to packed for proto3 only. */
f->packed_ = upb_FieldDef_IsPrimitive(f) &&
f->label_ == kUpb_Label_Repeated &&
f->file->syntax == kUpb_Syntax_Proto3;
}
}
static void create_service(
symtab_addctx* ctx, const google_protobuf_ServiceDescriptorProto* svc_proto,
const upb_ServiceDef* _s) {
upb_ServiceDef* s = (upb_ServiceDef*)_s;
upb_StringView name;
const google_protobuf_MethodDescriptorProto* const* methods;
size_t i, n;
s->file = ctx->file; /* Must happen prior to symtab_add. */
name = google_protobuf_ServiceDescriptorProto_name(svc_proto);
check_ident(ctx, name, false);
s->full_name = makefullname(ctx, ctx->file->package, name);
symtab_add(ctx, s->full_name, pack_def(s, UPB_DEFTYPE_SERVICE));
methods = google_protobuf_ServiceDescriptorProto_method(svc_proto, &n);
s->method_count = n;
s->methods = symtab_alloc(ctx, sizeof(*s->methods) * n);
SET_OPTIONS(s->opts, ServiceDescriptorProto, ServiceOptions, svc_proto);
for (i = 0; i < n; i++) {
const google_protobuf_MethodDescriptorProto* method_proto = methods[i];
upb_MethodDef* m = (upb_MethodDef*)&s->methods[i];
upb_StringView name =
google_protobuf_MethodDescriptorProto_name(method_proto);
m->service = s;
m->full_name = makefullname(ctx, s->full_name, name);
m->index = i;
m->client_streaming =
google_protobuf_MethodDescriptorProto_client_streaming(method_proto);
m->server_streaming =
google_protobuf_MethodDescriptorProto_server_streaming(method_proto);
m->input_type = symtab_resolve(
ctx, m->full_name, m->full_name,
google_protobuf_MethodDescriptorProto_input_type(method_proto),
UPB_DEFTYPE_MSG);
m->output_type = symtab_resolve(
ctx, m->full_name, m->full_name,
google_protobuf_MethodDescriptorProto_output_type(method_proto),
UPB_DEFTYPE_MSG);
SET_OPTIONS(m->opts, MethodDescriptorProto, MethodOptions, method_proto);
}
}
static int count_bits_debug(uint64_t x) {
// For assertions only, speed does not matter.
int n = 0;
while (x) {
if (x & 1) n++;
x >>= 1;
}
return n;
}
static int compare_int32(const void* a_ptr, const void* b_ptr) {
int32_t a = *(int32_t*)a_ptr;
int32_t b = *(int32_t*)b_ptr;
return a < b ? -1 : (a == b ? 0 : 1);
}
upb_MiniTable_Enum* create_enumlayout(symtab_addctx* ctx,
const upb_EnumDef* e) {
int n = 0;
uint64_t mask = 0;
for (int i = 0; i < e->value_count; i++) {
uint32_t val = (uint32_t)e->values[i].number;
if (val < 64) {
mask |= 1ULL << val;
} else {
n++;
}
}
int32_t* values = symtab_alloc(ctx, sizeof(*values) * n);
if (n) {
int32_t* p = values;
// Add values outside the bitmask range to the list, as described in the
// comments for upb_MiniTable_Enum.
for (int i = 0; i < e->value_count; i++) {
int32_t val = e->values[i].number;
if ((uint32_t)val >= 64) {
*p++ = val;
}
}
UPB_ASSERT(p == values + n);
}
// Enums can have duplicate values; we must sort+uniq them.
if (values) qsort(values, n, sizeof(*values), &compare_int32);
int dst = 0;
for (int i = 0; i < n; dst++) {
int32_t val = values[i];
while (i < n && values[i] == val) i++; // Skip duplicates.
values[dst] = val;
}
n = dst;
UPB_ASSERT(upb_inttable_count(&e->iton) == n + count_bits_debug(mask));
upb_MiniTable_Enum* layout = symtab_alloc(ctx, sizeof(*layout));
layout->value_count = n;
layout->mask = mask;
layout->values = values;
return layout;
}
static void create_enumvaldef(
symtab_addctx* ctx, const char* prefix,
const google_protobuf_EnumValueDescriptorProto* val_proto, upb_EnumDef* e,
int i) {
upb_EnumValueDef* val = (upb_EnumValueDef*)&e->values[i];
upb_StringView name =
google_protobuf_EnumValueDescriptorProto_name(val_proto);
upb_value v = upb_value_constptr(val);
val->parent = e; /* Must happen prior to symtab_add(). */
val->full_name = makefullname(ctx, prefix, name);
val->number = google_protobuf_EnumValueDescriptorProto_number(val_proto);
symtab_add(ctx, val->full_name, pack_def(val, UPB_DEFTYPE_ENUMVAL));
SET_OPTIONS(val->opts, EnumValueDescriptorProto, EnumValueOptions, val_proto);
if (i == 0 && e->file->syntax == kUpb_Syntax_Proto3 && val->number != 0) {
symtab_errf(ctx, "for proto3, the first enum value must be zero (%s)",
e->full_name);
}
CHK_OOM(upb_strtable_insert(&e->ntoi, name.data, name.size, v, ctx->arena));
// Multiple enumerators can have the same number, first one wins.
if (!upb_inttable_lookup(&e->iton, val->number, NULL)) {
CHK_OOM(upb_inttable_insert(&e->iton, val->number, v, ctx->arena));
}
}
static upb_StringView* _upb_EnumReservedNames_New(
symtab_addctx* ctx, int n, const upb_StringView* protos) {
upb_StringView* sv =
upb_Arena_Malloc(ctx->arena, sizeof(upb_StringView) * n);
for (size_t i = 0; i < n; i++) {
sv[i].data =
upb_strdup2(protos[i].data, protos[i].size, ctx->arena);
sv[i].size = protos[i].size;
}
return sv;
}
static void create_enumdef(
symtab_addctx* ctx, const char* prefix,
const google_protobuf_EnumDescriptorProto* enum_proto,
const upb_MessageDef* containing_type, const upb_EnumDef* _e) {
upb_EnumDef* e = (upb_EnumDef*)_e;
;
const google_protobuf_EnumValueDescriptorProto* const* values;
const google_protobuf_EnumDescriptorProto_EnumReservedRange* const* res_ranges;
const upb_StringView* res_names;
upb_StringView name;
size_t i, n, n_res_range, n_res_name;
e->file = ctx->file; /* Must happen prior to symtab_add() */
e->containing_type = containing_type;
name = google_protobuf_EnumDescriptorProto_name(enum_proto);
check_ident(ctx, name, false);
e->full_name = makefullname(ctx, prefix, name);
symtab_add(ctx, e->full_name, pack_def(e, UPB_DEFTYPE_ENUM));
values = google_protobuf_EnumDescriptorProto_value(enum_proto, &n);
CHK_OOM(upb_strtable_init(&e->ntoi, n, ctx->arena));
CHK_OOM(upb_inttable_init(&e->iton, ctx->arena));
e->defaultval = 0;
e->value_count = n;
e->values = symtab_alloc(ctx, sizeof(*e->values) * n);
if (n == 0) {
symtab_errf(ctx, "enums must contain at least one value (%s)",
e->full_name);
}
res_ranges =
google_protobuf_EnumDescriptorProto_reserved_range(enum_proto, &n_res_range);
e->res_range_count = n_res_range;
e->res_ranges = _upb_EnumReservedRanges_New(ctx, n_res_range, res_ranges, e);
res_names = google_protobuf_EnumDescriptorProto_reserved_name(enum_proto, &n_res_name);
e->res_name_count = n_res_name;
e->res_names = _upb_EnumReservedNames_New(ctx, n_res_name, res_names);
SET_OPTIONS(e->opts, EnumDescriptorProto, EnumOptions, enum_proto);
for (i = 0; i < n; i++) {
create_enumvaldef(ctx, prefix, values[i], e, i);
}
upb_inttable_compact(&e->iton, ctx->arena);
if (e->file->syntax == kUpb_Syntax_Proto2) {
if (ctx->layout) {
UPB_ASSERT(ctx->enum_count < ctx->layout->enum_count);
e->layout = ctx->layout->enums[ctx->enum_count++];
UPB_ASSERT(upb_inttable_count(&e->iton) ==
e->layout->value_count + count_bits_debug(e->layout->mask));
} else {
e->layout = create_enumlayout(ctx, e);
}
} else {
e->layout = NULL;
}
}
static void msgdef_create_nested(
symtab_addctx* ctx, const google_protobuf_DescriptorProto* msg_proto,
upb_MessageDef* m);
static upb_StringView* _upb_ReservedNames_New(symtab_addctx* ctx, int n,
const upb_StringView* protos) {
upb_StringView* sv = upb_Arena_Malloc(ctx->arena, sizeof(upb_StringView) * n);
for (size_t i = 0; i < n; i++) {
sv[i].data =
upb_strdup2(protos[i].data, protos[i].size, ctx->arena);
sv[i].size = protos[i].size;
}
return sv;
}
static void create_msgdef(symtab_addctx* ctx, const char* prefix,
const google_protobuf_DescriptorProto* msg_proto,
const upb_MessageDef* containing_type,
const upb_MessageDef* _m) {
upb_MessageDef* m = (upb_MessageDef*)_m;
const google_protobuf_OneofDescriptorProto* const* oneofs;
const google_protobuf_FieldDescriptorProto* const* fields;
const google_protobuf_DescriptorProto_ExtensionRange* const* ext_ranges;
const google_protobuf_DescriptorProto_ReservedRange* const* res_ranges;
const upb_StringView* res_names;
size_t i, n_oneof, n_field, n_ext_range;
size_t n_res_range, n_res_name;
upb_StringView name;
m->file = ctx->file; /* Must happen prior to symtab_add(). */
m->containing_type = containing_type;
name = google_protobuf_DescriptorProto_name(msg_proto);
check_ident(ctx, name, false);
m->full_name = makefullname(ctx, prefix, name);
symtab_add(ctx, m->full_name, pack_def(m, UPB_DEFTYPE_MSG));
oneofs = google_protobuf_DescriptorProto_oneof_decl(msg_proto, &n_oneof);
fields = google_protobuf_DescriptorProto_field(msg_proto, &n_field);
ext_ranges =
google_protobuf_DescriptorProto_extension_range(msg_proto, &n_ext_range);
res_ranges = google_protobuf_DescriptorProto_reserved_range(msg_proto, &n_res_range);
res_names = google_protobuf_DescriptorProto_reserved_name(msg_proto, &n_res_name);
CHK_OOM(upb_inttable_init(&m->itof, ctx->arena));
CHK_OOM(upb_strtable_init(&m->ntof, n_oneof + n_field, ctx->arena));
if (ctx->layout) {
/* create_fielddef() below depends on this being set. */
UPB_ASSERT(ctx->msg_count < ctx->layout->msg_count);
m->layout = ctx->layout->msgs[ctx->msg_count++];
UPB_ASSERT(n_field == m->layout->field_count);
} else {
/* Allocate now (to allow cross-linking), populate later. */
m->layout =
symtab_alloc(ctx, sizeof(*m->layout) + sizeof(_upb_FastTable_Entry));
}
SET_OPTIONS(m->opts, DescriptorProto, MessageOptions, msg_proto);
m->oneof_count = n_oneof;
m->oneofs = symtab_alloc(ctx, sizeof(*m->oneofs) * n_oneof);
for (i = 0; i < n_oneof; i++) {
create_oneofdef(ctx, m, oneofs[i], &m->oneofs[i]);
}
m->field_count = n_field;
m->fields = symtab_alloc(ctx, sizeof(*m->fields) * n_field);
for (i = 0; i < n_field; i++) {
create_fielddef(ctx, m->full_name, m, fields[i], &m->fields[i],
/* is_extension= */ false);
}
m->ext_range_count = n_ext_range;
m->ext_ranges = symtab_alloc(ctx, sizeof(*m->ext_ranges) * n_ext_range);
for (i = 0; i < n_ext_range; i++) {
const google_protobuf_DescriptorProto_ExtensionRange* r = ext_ranges[i];
upb_ExtensionRange* r_def = (upb_ExtensionRange*)&m->ext_ranges[i];
int32_t start = google_protobuf_DescriptorProto_ExtensionRange_start(r);
int32_t end = google_protobuf_DescriptorProto_ExtensionRange_end(r);
int32_t max =
google_protobuf_MessageOptions_message_set_wire_format(m->opts)
? INT32_MAX
: kUpb_MaxFieldNumber + 1;
// A full validation would also check that each range is disjoint, and that
// none of the fields overlap with the extension ranges, but we are just
// sanity checking here.
if (start < 1 || end <= start || end > max) {
symtab_errf(ctx, "Extension range (%d, %d) is invalid, message=%s\n",
(int)start, (int)end, m->full_name);
}
r_def->start = start;
r_def->end = end;
SET_OPTIONS(r_def->opts, DescriptorProto_ExtensionRange,
ExtensionRangeOptions, r);
}
m->res_range_count = n_res_range;
m->res_ranges =
_upb_MessageReservedRanges_New(ctx, n_res_range, res_ranges, m);
m->res_name_count = n_res_name;
m->res_names = _upb_ReservedNames_New(ctx, n_res_name, res_names);
finalize_oneofs(ctx, m);
assign_msg_wellknowntype(m);
upb_inttable_compact(&m->itof, ctx->arena);
msgdef_create_nested(ctx, msg_proto, m);
}
static void msgdef_create_nested(
symtab_addctx* ctx, const google_protobuf_DescriptorProto* msg_proto,
upb_MessageDef* m) {
size_t n;
const google_protobuf_EnumDescriptorProto* const* enums =
google_protobuf_DescriptorProto_enum_type(msg_proto, &n);
m->nested_enum_count = n;
m->nested_enums = symtab_alloc(ctx, sizeof(*m->nested_enums) * n);
for (size_t i = 0; i < n; i++) {
m->nested_enum_count = i + 1;
create_enumdef(ctx, m->full_name, enums[i], m, &m->nested_enums[i]);
}
const google_protobuf_FieldDescriptorProto* const* exts =
google_protobuf_DescriptorProto_extension(msg_proto, &n);
m->nested_ext_count = n;
m->nested_exts = symtab_alloc(ctx, sizeof(*m->nested_exts) * n);
for (size_t i = 0; i < n; i++) {
create_fielddef(ctx, m->full_name, m, exts[i], &m->nested_exts[i],
/* is_extension= */ true);
((upb_FieldDef*)&m->nested_exts[i])->index_ = i;
}
const google_protobuf_DescriptorProto* const* msgs =
google_protobuf_DescriptorProto_nested_type(msg_proto, &n);
m->nested_msg_count = n;
m->nested_msgs = symtab_alloc(ctx, sizeof(*m->nested_msgs) * n);
for (size_t i = 0; i < n; i++) {
create_msgdef(ctx, m->full_name, msgs[i], m, &m->nested_msgs[i]);
}
}
static void resolve_subdef(symtab_addctx* ctx, const char* prefix,
upb_FieldDef* f) {
const google_protobuf_FieldDescriptorProto* field_proto = f->sub.unresolved;
upb_StringView name =
google_protobuf_FieldDescriptorProto_type_name(field_proto);
bool has_name =
google_protobuf_FieldDescriptorProto_has_type_name(field_proto);
switch ((int)f->type_) {
case FIELD_TYPE_UNSPECIFIED: {
// Type was not specified and must be inferred.
UPB_ASSERT(has_name);
upb_deftype_t type;
const void* def =
symtab_resolveany(ctx, f->full_name, prefix, name, &type);
switch (type) {
case UPB_DEFTYPE_ENUM:
f->sub.enumdef = def;
f->type_ = kUpb_FieldType_Enum;
break;
case UPB_DEFTYPE_MSG:
f->sub.msgdef = def;
f->type_ = kUpb_FieldType_Message; // It appears there is no way of
// this being a group.
break;
default:
symtab_errf(ctx, "Couldn't resolve type name for field %s",
f->full_name);
}
}
case kUpb_FieldType_Message:
case kUpb_FieldType_Group:
UPB_ASSERT(has_name);
f->sub.msgdef =
symtab_resolve(ctx, f->full_name, prefix, name, UPB_DEFTYPE_MSG);
break;
case kUpb_FieldType_Enum:
UPB_ASSERT(has_name);
f->sub.enumdef =
symtab_resolve(ctx, f->full_name, prefix, name, UPB_DEFTYPE_ENUM);
break;
default:
// No resolution necessary.
break;
}
}
static void resolve_extension(
symtab_addctx* ctx, const char* prefix, upb_FieldDef* f,
const google_protobuf_FieldDescriptorProto* field_proto) {
if (!google_protobuf_FieldDescriptorProto_has_extendee(field_proto)) {
symtab_errf(ctx, "extension for field '%s' had no extendee", f->full_name);
}
upb_StringView name =
google_protobuf_FieldDescriptorProto_extendee(field_proto);
const upb_MessageDef* m =
symtab_resolve(ctx, f->full_name, prefix, name, UPB_DEFTYPE_MSG);
f->msgdef = m;
bool found = false;
for (int i = 0, n = m->ext_range_count; i < n; i++) {
const upb_ExtensionRange* r = &m->ext_ranges[i];
if (r->start <= f->number_ && f->number_ < r->end) {
found = true;
break;
}
}
if (!found) {
symtab_errf(ctx,
"field number %u in extension %s has no extension range in "
"message %s",
(unsigned)f->number_, f->full_name, f->msgdef->full_name);
}
const upb_MiniTable_Extension* ext = ctx->file->ext_layouts[f->layout_index];
if (ctx->layout) {
UPB_ASSERT(upb_FieldDef_Number(f) == ext->field.number);
} else {
upb_MiniTable_Extension* mut_ext = (upb_MiniTable_Extension*)ext;
fill_fieldlayout(&mut_ext->field, f);
mut_ext->field.presence = 0;
mut_ext->field.offset = 0;
mut_ext->field.submsg_index = 0;
mut_ext->extendee = f->msgdef->layout;
mut_ext->sub.submsg = f->sub.msgdef->layout;
}
CHK_OOM(upb_inttable_insert(&ctx->symtab->exts, (uintptr_t)ext,
upb_value_constptr(f), ctx->arena));
}
static void resolve_default(
symtab_addctx* ctx, upb_FieldDef* f,
const google_protobuf_FieldDescriptorProto* field_proto) {
// Have to delay resolving of the default value until now because of the enum
// case, since enum defaults are specified with a label.
if (google_protobuf_FieldDescriptorProto_has_default_value(field_proto)) {
upb_StringView defaultval =
google_protobuf_FieldDescriptorProto_default_value(field_proto);
if (f->file->syntax == kUpb_Syntax_Proto3) {
symtab_errf(ctx, "proto3 fields cannot have explicit defaults (%s)",
f->full_name);
}
if (upb_FieldDef_IsSubMessage(f)) {
symtab_errf(ctx, "message fields cannot have explicit defaults (%s)",
f->full_name);
}
parse_default(ctx, defaultval.data, defaultval.size, f);
f->has_default = true;
} else {
set_default_default(ctx, f);
f->has_default = false;
}
}
static void resolve_fielddef(symtab_addctx* ctx, const char* prefix,
upb_FieldDef* f) {
// We have to stash this away since resolve_subdef() may overwrite it.
const google_protobuf_FieldDescriptorProto* field_proto = f->sub.unresolved;
resolve_subdef(ctx, prefix, f);
resolve_default(ctx, f, field_proto);
if (f->is_extension_) {
resolve_extension(ctx, prefix, f, field_proto);
}
}
static void resolve_msgdef(symtab_addctx* ctx, upb_MessageDef* m) {
for (int i = 0; i < m->field_count; i++) {
resolve_fielddef(ctx, m->full_name, (upb_FieldDef*)&m->fields[i]);
}
m->in_message_set = false;
for (int i = 0; i < m->nested_ext_count; i++) {
upb_FieldDef* ext = (upb_FieldDef*)&m->nested_exts[i];
resolve_fielddef(ctx, m->full_name, ext);
if (ext->type_ == kUpb_FieldType_Message &&
ext->label_ == kUpb_Label_Optional && ext->sub.msgdef == m &&
google_protobuf_MessageOptions_message_set_wire_format(
ext->msgdef->opts)) {
m->in_message_set = true;
}
}
if (!ctx->layout) make_layout(ctx, m);
for (int i = 0; i < m->nested_msg_count; i++) {
resolve_msgdef(ctx, (upb_MessageDef*)&m->nested_msgs[i]);
}
}
static int count_exts_in_msg(const google_protobuf_DescriptorProto* msg_proto) {
size_t n;
google_protobuf_DescriptorProto_extension(msg_proto, &n);
int ext_count = n;
const google_protobuf_DescriptorProto* const* nested_msgs =
google_protobuf_DescriptorProto_nested_type(msg_proto, &n);
for (size_t i = 0; i < n; i++) {
ext_count += count_exts_in_msg(nested_msgs[i]);
}
return ext_count;
}
static void build_filedef(
symtab_addctx* ctx, upb_FileDef* file,
const google_protobuf_FileDescriptorProto* file_proto) {
const google_protobuf_DescriptorProto* const* msgs;
const google_protobuf_EnumDescriptorProto* const* enums;
const google_protobuf_FieldDescriptorProto* const* exts;
const google_protobuf_ServiceDescriptorProto* const* services;
const upb_StringView* strs;
const int32_t* public_deps;
const int32_t* weak_deps;
size_t i, n;
file->symtab = ctx->symtab;
/* Count all extensions in the file, to build a flat array of layouts. */
google_protobuf_FileDescriptorProto_extension(file_proto, &n);
int ext_count = n;
msgs = google_protobuf_FileDescriptorProto_message_type(file_proto, &n);
for (int i = 0; i < n; i++) {
ext_count += count_exts_in_msg(msgs[i]);
}
file->ext_count = ext_count;
if (ctx->layout) {
/* We are using the ext layouts that were passed in. */
file->ext_layouts = ctx->layout->exts;
if (ctx->layout->ext_count != file->ext_count) {
symtab_errf(ctx, "Extension count did not match layout (%d vs %d)",
ctx->layout->ext_count, file->ext_count);
}
} else {
/* We are building ext layouts from scratch. */
file->ext_layouts =
symtab_alloc(ctx, sizeof(*file->ext_layouts) * file->ext_count);
upb_MiniTable_Extension* ext =
symtab_alloc(ctx, sizeof(*ext) * file->ext_count);
for (int i = 0; i < file->ext_count; i++) {
file->ext_layouts[i] = &ext[i];
}
}
if (!google_protobuf_FileDescriptorProto_has_name(file_proto)) {
symtab_errf(ctx, "File has no name");
}
file->name =
strviewdup(ctx, google_protobuf_FileDescriptorProto_name(file_proto));
upb_StringView package = google_protobuf_FileDescriptorProto_package(file_proto);
if (package.size) {
check_ident(ctx, package, true);
file->package = strviewdup(ctx, package);
} else {
file->package = NULL;
}
if (google_protobuf_FileDescriptorProto_has_syntax(file_proto)) {
upb_StringView syntax =
google_protobuf_FileDescriptorProto_syntax(file_proto);
if (streql_view(syntax, "proto2")) {
file->syntax = kUpb_Syntax_Proto2;
} else if (streql_view(syntax, "proto3")) {
file->syntax = kUpb_Syntax_Proto3;
} else {
symtab_errf(ctx, "Invalid syntax '" UPB_STRINGVIEW_FORMAT "'",
UPB_STRINGVIEW_ARGS(syntax));
}
} else {
file->syntax = kUpb_Syntax_Proto2;
}
/* Read options. */
SET_OPTIONS(file->opts, FileDescriptorProto, FileOptions, file_proto);
/* Verify dependencies. */
strs = google_protobuf_FileDescriptorProto_dependency(file_proto, &n);
file->dep_count = n;
file->deps = symtab_alloc(ctx, sizeof(*file->deps) * n);
for (i = 0; i < n; i++) {
upb_StringView str = strs[i];
file->deps[i] =
upb_DefPool_FindFileByNameWithSize(ctx->symtab, str.data, str.size);
if (!file->deps[i]) {
symtab_errf(ctx,
"Depends on file '" UPB_STRINGVIEW_FORMAT
"', but it has not been loaded",
UPB_STRINGVIEW_ARGS(str));
}
}
public_deps =
google_protobuf_FileDescriptorProto_public_dependency(file_proto, &n);
file->public_dep_count = n;
file->public_deps = symtab_alloc(ctx, sizeof(*file->public_deps) * n);
int32_t* mutable_public_deps = (int32_t*)file->public_deps;
for (i = 0; i < n; i++) {
if (public_deps[i] >= file->dep_count) {
symtab_errf(ctx, "public_dep %d is out of range", (int)public_deps[i]);
}
mutable_public_deps[i] = public_deps[i];
}
weak_deps =
google_protobuf_FileDescriptorProto_weak_dependency(file_proto, &n);
file->weak_dep_count = n;
file->weak_deps = symtab_alloc(ctx, sizeof(*file->weak_deps) * n);
int32_t* mutable_weak_deps = (int32_t*)file->weak_deps;
for (i = 0; i < n; i++) {
if (weak_deps[i] >= file->dep_count) {
symtab_errf(ctx, "weak_dep %d is out of range", (int)weak_deps[i]);
}
mutable_weak_deps[i] = weak_deps[i];
}
/* Create enums. */
enums = google_protobuf_FileDescriptorProto_enum_type(file_proto, &n);
file->top_lvl_enum_count = n;
file->top_lvl_enums = symtab_alloc(ctx, sizeof(*file->top_lvl_enums) * n);
for (i = 0; i < n; i++) {
create_enumdef(ctx, file->package, enums[i], NULL, &file->top_lvl_enums[i]);
}
/* Create extensions. */
exts = google_protobuf_FileDescriptorProto_extension(file_proto, &n);
file->top_lvl_ext_count = n;
file->top_lvl_exts = symtab_alloc(ctx, sizeof(*file->top_lvl_exts) * n);
for (i = 0; i < n; i++) {
create_fielddef(ctx, file->package, NULL, exts[i], &file->top_lvl_exts[i],
/* is_extension= */ true);
((upb_FieldDef*)&file->top_lvl_exts[i])->index_ = i;
}
/* Create messages. */
msgs = google_protobuf_FileDescriptorProto_message_type(file_proto, &n);
file->top_lvl_msg_count = n;
file->top_lvl_msgs = symtab_alloc(ctx, sizeof(*file->top_lvl_msgs) * n);
for (i = 0; i < n; i++) {
create_msgdef(ctx, file->package, msgs[i], NULL, &file->top_lvl_msgs[i]);
}
/* Create services. */
services = google_protobuf_FileDescriptorProto_service(file_proto, &n);
file->service_count = n;
file->services = symtab_alloc(ctx, sizeof(*file->services) * n);
for (i = 0; i < n; i++) {
create_service(ctx, services[i], &file->services[i]);
((upb_ServiceDef*)&file->services[i])->index = i;
}
/* Now that all names are in the table, build layouts and resolve refs. */
for (i = 0; i < (size_t)file->top_lvl_ext_count; i++) {
resolve_fielddef(ctx, file->package, (upb_FieldDef*)&file->top_lvl_exts[i]);
}
for (i = 0; i < (size_t)file->top_lvl_msg_count; i++) {
resolve_msgdef(ctx, (upb_MessageDef*)&file->top_lvl_msgs[i]);
}
if (file->ext_count) {
CHK_OOM(_upb_extreg_add(ctx->symtab->extreg, file->ext_layouts,
file->ext_count));
}
}
static void remove_filedef(upb_DefPool* s, upb_FileDef* file) {
intptr_t iter = UPB_INTTABLE_BEGIN;
upb_StringView key;
upb_value val;
while (upb_strtable_next2(&s->syms, &key, &val, &iter)) {
const upb_FileDef* f;
switch (deftype(val)) {
case UPB_DEFTYPE_EXT:
f = upb_FieldDef_File(unpack_def(val, UPB_DEFTYPE_EXT));
break;
case UPB_DEFTYPE_MSG:
f = upb_MessageDef_File(unpack_def(val, UPB_DEFTYPE_MSG));
break;
case UPB_DEFTYPE_ENUM:
f = upb_EnumDef_File(unpack_def(val, UPB_DEFTYPE_ENUM));
break;
case UPB_DEFTYPE_ENUMVAL:
f = upb_EnumDef_File(
upb_EnumValueDef_Enum(unpack_def(val, UPB_DEFTYPE_ENUMVAL)));
break;
case UPB_DEFTYPE_SERVICE:
f = upb_ServiceDef_File(unpack_def(val, UPB_DEFTYPE_SERVICE));
break;
default:
UPB_UNREACHABLE();
}
if (f == file) upb_strtable_removeiter(&s->syms, &iter);
}
}
static const upb_FileDef* _upb_DefPool_AddFile(
upb_DefPool* s, const google_protobuf_FileDescriptorProto* file_proto,
const upb_MiniTable_File* layout, upb_Status* status) {
symtab_addctx ctx;
upb_StringView name = google_protobuf_FileDescriptorProto_name(file_proto);
upb_value v;
if (upb_strtable_lookup2(&s->files, name.data, name.size, &v)) {
if (unpack_def(v, UPB_DEFTYPE_FILE)) {
upb_Status_SetErrorFormat(status, "duplicate file name (%.*s)",
UPB_STRINGVIEW_ARGS(name));
return NULL;
}
const upb_MiniTable_File* registered = unpack_def(v, UPB_DEFTYPE_LAYOUT);
UPB_ASSERT(registered);
if (layout && layout != registered) {
upb_Status_SetErrorFormat(
status, "tried to build with a different layout (filename=%.*s)",
UPB_STRINGVIEW_ARGS(name));
return NULL;
}
layout = registered;
}
ctx.symtab = s;
ctx.layout = layout;
ctx.msg_count = 0;
ctx.enum_count = 0;
ctx.ext_count = 0;
ctx.status = status;
ctx.file = NULL;
ctx.arena = upb_Arena_New();
ctx.tmp_arena = upb_Arena_New();
if (!ctx.arena || !ctx.tmp_arena) {
if (ctx.arena) upb_Arena_Free(ctx.arena);
if (ctx.tmp_arena) upb_Arena_Free(ctx.tmp_arena);
upb_Status_setoom(status);
return NULL;
}
if (UPB_UNLIKELY(UPB_SETJMP(ctx.err))) {
UPB_ASSERT(!upb_Status_IsOk(status));
if (ctx.file) {
remove_filedef(s, ctx.file);
ctx.file = NULL;
}
} else {
ctx.file = symtab_alloc(&ctx, sizeof(*ctx.file));
build_filedef(&ctx, ctx.file, file_proto);
upb_strtable_insert(&s->files, name.data, name.size,
pack_def(ctx.file, UPB_DEFTYPE_FILE), ctx.arena);
UPB_ASSERT(upb_Status_IsOk(status));
upb_Arena_Fuse(s->arena, ctx.arena);
}
upb_Arena_Free(ctx.arena);
upb_Arena_Free(ctx.tmp_arena);
return ctx.file;
}
const upb_FileDef* upb_DefPool_AddFile(
upb_DefPool* s, const google_protobuf_FileDescriptorProto* file_proto,
upb_Status* status) {
return _upb_DefPool_AddFile(s, file_proto, NULL, status);
}
/* Include here since we want most of this file to be stdio-free. */
#include <stdio.h>
bool _upb_DefPool_LoadDefInitEx(upb_DefPool* s, const _upb_DefPool_Init* init,
bool rebuild_minitable) {
/* Since this function should never fail (it would indicate a bug in upb) we
* print errors to stderr instead of returning error status to the user. */
_upb_DefPool_Init** deps = init->deps;
google_protobuf_FileDescriptorProto* file;
upb_Arena* arena;
upb_Status status;
upb_Status_Clear(&status);
if (upb_DefPool_FindFileByName(s, init->filename)) {
return true;
}
arena = upb_Arena_New();
for (; *deps; deps++) {
if (!_upb_DefPool_LoadDefInitEx(s, *deps, rebuild_minitable)) goto err;
}
file = google_protobuf_FileDescriptorProto_parse_ex(
init->descriptor.data, init->descriptor.size, NULL,
kUpb_DecodeOption_AliasString, arena);
s->bytes_loaded += init->descriptor.size;
if (!file) {
upb_Status_SetErrorFormat(
&status,
"Failed to parse compiled-in descriptor for file '%s'. This should "
"never happen.",
init->filename);
goto err;
}
const upb_MiniTable_File* mt = rebuild_minitable ? NULL : init->layout;
if (!_upb_DefPool_AddFile(s, file, mt, &status)) {
goto err;
}
upb_Arena_Free(arena);
return true;
err:
fprintf(stderr,
"Error loading compiled-in descriptor for file '%s' (this should "
"never happen): %s\n",
init->filename, upb_Status_ErrorMessage(&status));
upb_Arena_Free(arena);
return false;
}
size_t _upb_DefPool_BytesLoaded(const upb_DefPool* s) {
return s->bytes_loaded;
}
upb_Arena* _upb_DefPool_Arena(const upb_DefPool* s) { return s->arena; }
const upb_FieldDef* _upb_DefPool_FindExtensionByMiniTable(
const upb_DefPool* s, const upb_MiniTable_Extension* ext) {
upb_value v;
bool ok = upb_inttable_lookup(&s->exts, (uintptr_t)ext, &v);
UPB_ASSERT(ok);
return upb_value_getconstptr(v);
}
const upb_FieldDef* upb_DefPool_FindExtensionByNumber(const upb_DefPool* s,
const upb_MessageDef* m,
int32_t fieldnum) {
const upb_MiniTable* l = upb_MessageDef_MiniTable(m);
const upb_MiniTable_Extension* ext = _upb_extreg_get(s->extreg, l, fieldnum);
return ext ? _upb_DefPool_FindExtensionByMiniTable(s, ext) : NULL;
}
bool _upb_DefPool_registerlayout(upb_DefPool* s, const char* filename,
const upb_MiniTable_File* file) {
if (upb_DefPool_FindFileByName(s, filename)) return false;
upb_value v = pack_def(file, UPB_DEFTYPE_LAYOUT);
return upb_strtable_insert(&s->files, filename, strlen(filename), v,
s->arena);
}
const upb_ExtensionRegistry* upb_DefPool_ExtensionRegistry(
const upb_DefPool* s) {
return s->extreg;
}
const upb_FieldDef** upb_DefPool_GetAllExtensions(const upb_DefPool* s,
const upb_MessageDef* m,
size_t* count) {
size_t n = 0;
intptr_t iter = UPB_INTTABLE_BEGIN;
uintptr_t key;
upb_value val;
// This is O(all exts) instead of O(exts for m). If we need this to be
// efficient we may need to make extreg into a two-level table, or have a
// second per-message index.
while (upb_inttable_next2(&s->exts, &key, &val, &iter)) {
const upb_FieldDef* f = upb_value_getconstptr(val);
if (upb_FieldDef_ContainingType(f) == m) n++;
}
const upb_FieldDef** exts = malloc(n * sizeof(*exts));
iter = UPB_INTTABLE_BEGIN;
size_t i = 0;
while (upb_inttable_next2(&s->exts, &key, &val, &iter)) {
const upb_FieldDef* f = upb_value_getconstptr(val);
if (upb_FieldDef_ContainingType(f) == m) exts[i++] = f;
}
*count = n;
return exts;
}
#undef CHK_OOM
/** upb/reflection.c ************************************************************/
#include <string.h>
static size_t get_field_size(const upb_MiniTable_Field* f) {
static unsigned char sizes[] = {
0, /* 0 */
8, /* kUpb_FieldType_Double */
4, /* kUpb_FieldType_Float */
8, /* kUpb_FieldType_Int64 */
8, /* kUpb_FieldType_UInt64 */
4, /* kUpb_FieldType_Int32 */
8, /* kUpb_FieldType_Fixed64 */
4, /* kUpb_FieldType_Fixed32 */
1, /* kUpb_FieldType_Bool */
sizeof(upb_StringView), /* kUpb_FieldType_String */
sizeof(void*), /* kUpb_FieldType_Group */
sizeof(void*), /* kUpb_FieldType_Message */
sizeof(upb_StringView), /* kUpb_FieldType_Bytes */
4, /* kUpb_FieldType_UInt32 */
4, /* kUpb_FieldType_Enum */
4, /* kUpb_FieldType_SFixed32 */
8, /* kUpb_FieldType_SFixed64 */
4, /* kUpb_FieldType_SInt32 */
8, /* kUpb_FieldType_SInt64 */
};
return upb_IsRepeatedOrMap(f) ? sizeof(void*) : sizes[f->descriptortype];
}
/** upb_Message
* *******************************************************************/
upb_Message* upb_Message_New(const upb_MessageDef* m, upb_Arena* a) {
return _upb_Message_New(upb_MessageDef_MiniTable(m), a);
}
static bool in_oneof(const upb_MiniTable_Field* field) {
return field->presence < 0;
}
static upb_MessageValue _upb_Message_Getraw(const upb_Message* msg,
const upb_FieldDef* f) {
const upb_MiniTable_Field* field = upb_FieldDef_MiniTable(f);
const char* mem = UPB_PTR_AT(msg, field->offset, char);
upb_MessageValue val = {0};
memcpy(&val, mem, get_field_size(field));
return val;
}
bool upb_Message_Has(const upb_Message* msg, const upb_FieldDef* f) {
assert(upb_FieldDef_HasPresence(f));
if (upb_FieldDef_IsExtension(f)) {
const upb_MiniTable_Extension* ext = _upb_FieldDef_ExtensionMiniTable(f);
return _upb_Message_Getext(msg, ext) != NULL;
} else {
const upb_MiniTable_Field* field = upb_FieldDef_MiniTable(f);
if (in_oneof(field)) {
return _upb_getoneofcase_field(msg, field) == field->number;
} else if (field->presence > 0) {
return _upb_hasbit_field(msg, field);
} else {
UPB_ASSERT(field->descriptortype == kUpb_FieldType_Message ||
field->descriptortype == kUpb_FieldType_Group);
return _upb_Message_Getraw(msg, f).msg_val != NULL;
}
}
}
const upb_FieldDef* upb_Message_WhichOneof(const upb_Message* msg,
const upb_OneofDef* o) {
const upb_FieldDef* f = upb_OneofDef_Field(o, 0);
if (upb_OneofDef_IsSynthetic(o)) {
UPB_ASSERT(upb_OneofDef_FieldCount(o) == 1);
return upb_Message_Has(msg, f) ? f : NULL;
} else {
const upb_MiniTable_Field* field = upb_FieldDef_MiniTable(f);
uint32_t oneof_case = _upb_getoneofcase_field(msg, field);
f = oneof_case ? upb_OneofDef_LookupNumber(o, oneof_case) : NULL;
UPB_ASSERT((f != NULL) == (oneof_case != 0));
return f;
}
}
upb_MessageValue upb_Message_Get(const upb_Message* msg,
const upb_FieldDef* f) {
if (upb_FieldDef_IsExtension(f)) {
const upb_Message_Extension* ext =
_upb_Message_Getext(msg, _upb_FieldDef_ExtensionMiniTable(f));
if (ext) {
upb_MessageValue val;
memcpy(&val, &ext->data, sizeof(val));
return val;
} else if (upb_FieldDef_IsRepeated(f)) {
return (upb_MessageValue){.array_val = NULL};
}
} else if (!upb_FieldDef_HasPresence(f) || upb_Message_Has(msg, f)) {
return _upb_Message_Getraw(msg, f);
}
return upb_FieldDef_Default(f);
}
upb_MutableMessageValue upb_Message_Mutable(upb_Message* msg,
const upb_FieldDef* f,
upb_Arena* a) {
UPB_ASSERT(upb_FieldDef_IsSubMessage(f) || upb_FieldDef_IsRepeated(f));
if (upb_FieldDef_HasPresence(f) && !upb_Message_Has(msg, f)) {
// We need to skip the upb_Message_Get() call in this case.
goto make;
}
upb_MessageValue val = upb_Message_Get(msg, f);
if (val.array_val) {
return (upb_MutableMessageValue){.array = (upb_Array*)val.array_val};
}
upb_MutableMessageValue ret;
make:
if (!a) return (upb_MutableMessageValue){.array = NULL};
if (upb_FieldDef_IsMap(f)) {
const upb_MessageDef* entry = upb_FieldDef_MessageSubDef(f);
const upb_FieldDef* key =
upb_MessageDef_FindFieldByNumber(entry, kUpb_MapEntry_KeyFieldNumber);
const upb_FieldDef* value =
upb_MessageDef_FindFieldByNumber(entry, kUpb_MapEntry_ValueFieldNumber);
ret.map =
upb_Map_New(a, upb_FieldDef_CType(key), upb_FieldDef_CType(value));
} else if (upb_FieldDef_IsRepeated(f)) {
ret.array = upb_Array_New(a, upb_FieldDef_CType(f));
} else {
UPB_ASSERT(upb_FieldDef_IsSubMessage(f));
ret.msg = upb_Message_New(upb_FieldDef_MessageSubDef(f), a);
}
val.array_val = ret.array;
upb_Message_Set(msg, f, val, a);
return ret;
}
bool upb_Message_Set(upb_Message* msg, const upb_FieldDef* f,
upb_MessageValue val, upb_Arena* a) {
if (upb_FieldDef_IsExtension(f)) {
upb_Message_Extension* ext = _upb_Message_GetOrCreateExtension(
msg, _upb_FieldDef_ExtensionMiniTable(f), a);
if (!ext) return false;
memcpy(&ext->data, &val, sizeof(val));
} else {
const upb_MiniTable_Field* field = upb_FieldDef_MiniTable(f);
char* mem = UPB_PTR_AT(msg, field->offset, char);
memcpy(mem, &val, get_field_size(field));
if (field->presence > 0) {
_upb_sethas_field(msg, field);
} else if (in_oneof(field)) {
*_upb_oneofcase_field(msg, field) = field->number;
}
}
return true;
}
void upb_Message_ClearField(upb_Message* msg, const upb_FieldDef* f) {
if (upb_FieldDef_IsExtension(f)) {
_upb_Message_Clearext(msg, _upb_FieldDef_ExtensionMiniTable(f));
} else {
const upb_MiniTable_Field* field = upb_FieldDef_MiniTable(f);
char* mem = UPB_PTR_AT(msg, field->offset, char);
if (field->presence > 0) {
_upb_clearhas_field(msg, field);
} else if (in_oneof(field)) {
uint32_t* oneof_case = _upb_oneofcase_field(msg, field);
if (*oneof_case != field->number) return;
*oneof_case = 0;
}
memset(mem, 0, get_field_size(field));
}
}
void upb_Message_Clear(upb_Message* msg, const upb_MessageDef* m) {
_upb_Message_Clear(msg, upb_MessageDef_MiniTable(m));
}
bool upb_Message_Next(const upb_Message* msg, const upb_MessageDef* m,
const upb_DefPool* ext_pool, const upb_FieldDef** out_f,
upb_MessageValue* out_val, size_t* iter) {
size_t i = *iter;
size_t n = upb_MessageDef_FieldCount(m);
const upb_MessageValue zero = {0};
UPB_UNUSED(ext_pool);
/* Iterate over normal fields, returning the first one that is set. */
while (++i < n) {
const upb_FieldDef* f = upb_MessageDef_Field(m, i);
upb_MessageValue val = _upb_Message_Getraw(msg, f);
/* Skip field if unset or empty. */
if (upb_FieldDef_HasPresence(f)) {
if (!upb_Message_Has(msg, f)) continue;
} else {
upb_MessageValue test = val;
if (upb_FieldDef_IsString(f) && !upb_FieldDef_IsRepeated(f)) {
/* Clear string pointer, only size matters (ptr could be non-NULL). */
test.str_val.data = NULL;
}
/* Continue if NULL or 0. */
if (memcmp(&test, &zero, sizeof(test)) == 0) continue;
/* Continue on empty array or map. */
if (upb_FieldDef_IsMap(f)) {
if (upb_Map_Size(test.map_val) == 0) continue;
} else if (upb_FieldDef_IsRepeated(f)) {
if (upb_Array_Size(test.array_val) == 0) continue;
}
}
*out_val = val;
*out_f = f;
*iter = i;
return true;
}
if (ext_pool) {
/* Return any extensions that are set. */
size_t count;
const upb_Message_Extension* ext = _upb_Message_Getexts(msg, &count);
if (i - n < count) {
ext += count - 1 - (i - n);
memcpy(out_val, &ext->data, sizeof(*out_val));
*out_f = _upb_DefPool_FindExtensionByMiniTable(ext_pool, ext->ext);
*iter = i;
return true;
}
}
*iter = i;
return false;
}
bool _upb_Message_DiscardUnknown(upb_Message* msg, const upb_MessageDef* m,
int depth) {
size_t iter = kUpb_Message_Begin;
const upb_FieldDef* f;
upb_MessageValue val;
bool ret = true;
if (--depth == 0) return false;
_upb_Message_DiscardUnknown_shallow(msg);
while (upb_Message_Next(msg, m, NULL /*ext_pool*/, &f, &val, &iter)) {
const upb_MessageDef* subm = upb_FieldDef_MessageSubDef(f);
if (!subm) continue;
if (upb_FieldDef_IsMap(f)) {
const upb_FieldDef* val_f = upb_MessageDef_FindFieldByNumber(subm, 2);
const upb_MessageDef* val_m = upb_FieldDef_MessageSubDef(val_f);
upb_Map* map = (upb_Map*)val.map_val;
size_t iter = kUpb_Map_Begin;
if (!val_m) continue;
while (upb_MapIterator_Next(map, &iter)) {
upb_MessageValue map_val = upb_MapIterator_Value(map, iter);
if (!_upb_Message_DiscardUnknown((upb_Message*)map_val.msg_val, val_m,
depth)) {
ret = false;
}
}
} else if (upb_FieldDef_IsRepeated(f)) {
const upb_Array* arr = val.array_val;
size_t i, n = upb_Array_Size(arr);
for (i = 0; i < n; i++) {
upb_MessageValue elem = upb_Array_Get(arr, i);
if (!_upb_Message_DiscardUnknown((upb_Message*)elem.msg_val, subm,
depth)) {
ret = false;
}
}
} else {
if (!_upb_Message_DiscardUnknown((upb_Message*)val.msg_val, subm,
depth)) {
ret = false;
}
}
}
return ret;
}
bool upb_Message_DiscardUnknown(upb_Message* msg, const upb_MessageDef* m,
int maxdepth) {
return _upb_Message_DiscardUnknown(msg, m, maxdepth);
}
/** upb/decode.c ************************************************************/
#include <setjmp.h>
#include <string.h>
/* Must be last. */
/* Maps descriptor type -> elem_size_lg2. */
static const uint8_t desctype_to_elem_size_lg2[] = {
-1, /* invalid descriptor type */
3, /* DOUBLE */
2, /* FLOAT */
3, /* INT64 */
3, /* UINT64 */
2, /* INT32 */
3, /* FIXED64 */
2, /* FIXED32 */
0, /* BOOL */
UPB_SIZE(3, 4), /* STRING */
UPB_SIZE(2, 3), /* GROUP */
UPB_SIZE(2, 3), /* MESSAGE */
UPB_SIZE(3, 4), /* BYTES */
2, /* UINT32 */
2, /* ENUM */
2, /* SFIXED32 */
3, /* SFIXED64 */
2, /* SINT32 */
3, /* SINT64 */
};
/* Maps descriptor type -> upb map size. */
static const uint8_t desctype_to_mapsize[] = {
-1, /* invalid descriptor type */
8, /* DOUBLE */
4, /* FLOAT */
8, /* INT64 */
8, /* UINT64 */
4, /* INT32 */
8, /* FIXED64 */
4, /* FIXED32 */
1, /* BOOL */
UPB_MAPTYPE_STRING, /* STRING */
sizeof(void*), /* GROUP */
sizeof(void*), /* MESSAGE */
UPB_MAPTYPE_STRING, /* BYTES */
4, /* UINT32 */
4, /* ENUM */
4, /* SFIXED32 */
8, /* SFIXED64 */
4, /* SINT32 */
8, /* SINT64 */
};
static const unsigned FIXED32_OK_MASK = (1 << kUpb_FieldType_Float) |
(1 << kUpb_FieldType_Fixed32) |
(1 << kUpb_FieldType_SFixed32);
static const unsigned FIXED64_OK_MASK = (1 << kUpb_FieldType_Double) |
(1 << kUpb_FieldType_Fixed64) |
(1 << kUpb_FieldType_SFixed64);
/* Three fake field types for MessageSet. */
#define TYPE_MSGSET_ITEM 19
#define TYPE_COUNT 19
/* Op: an action to be performed for a wire-type/field-type combination. */
#define OP_UNKNOWN -1 /* Unknown field. */
#define OP_MSGSET_ITEM -2
#define OP_SCALAR_LG2(n) (n) /* n in [0, 2, 3] => op in [0, 2, 3] */
#define OP_ENUM 1
#define OP_STRING 4
#define OP_BYTES 5
#define OP_SUBMSG 6
/* Scalar fields use only ops above. Repeated fields can use any op. */
#define OP_FIXPCK_LG2(n) (n + 5) /* n in [2, 3] => op in [7, 8] */
#define OP_VARPCK_LG2(n) (n + 9) /* n in [0, 2, 3] => op in [9, 11, 12] */
#define OP_PACKED_ENUM 13
static const int8_t varint_ops[] = {
OP_UNKNOWN, /* field not found */
OP_UNKNOWN, /* DOUBLE */
OP_UNKNOWN, /* FLOAT */
OP_SCALAR_LG2(3), /* INT64 */
OP_SCALAR_LG2(3), /* UINT64 */
OP_SCALAR_LG2(2), /* INT32 */
OP_UNKNOWN, /* FIXED64 */
OP_UNKNOWN, /* FIXED32 */
OP_SCALAR_LG2(0), /* BOOL */
OP_UNKNOWN, /* STRING */
OP_UNKNOWN, /* GROUP */
OP_UNKNOWN, /* MESSAGE */
OP_UNKNOWN, /* BYTES */
OP_SCALAR_LG2(2), /* UINT32 */
OP_ENUM, /* ENUM */
OP_UNKNOWN, /* SFIXED32 */
OP_UNKNOWN, /* SFIXED64 */
OP_SCALAR_LG2(2), /* SINT32 */
OP_SCALAR_LG2(3), /* SINT64 */
OP_UNKNOWN, /* MSGSET_ITEM */
};
static const int8_t delim_ops[] = {
/* For non-repeated field type. */
OP_UNKNOWN, /* field not found */
OP_UNKNOWN, /* DOUBLE */
OP_UNKNOWN, /* FLOAT */
OP_UNKNOWN, /* INT64 */
OP_UNKNOWN, /* UINT64 */
OP_UNKNOWN, /* INT32 */
OP_UNKNOWN, /* FIXED64 */
OP_UNKNOWN, /* FIXED32 */
OP_UNKNOWN, /* BOOL */
OP_STRING, /* STRING */
OP_UNKNOWN, /* GROUP */
OP_SUBMSG, /* MESSAGE */
OP_BYTES, /* BYTES */
OP_UNKNOWN, /* UINT32 */
OP_UNKNOWN, /* ENUM */
OP_UNKNOWN, /* SFIXED32 */
OP_UNKNOWN, /* SFIXED64 */
OP_UNKNOWN, /* SINT32 */
OP_UNKNOWN, /* SINT64 */
OP_UNKNOWN, /* MSGSET_ITEM */
/* For repeated field type. */
OP_FIXPCK_LG2(3), /* REPEATED DOUBLE */
OP_FIXPCK_LG2(2), /* REPEATED FLOAT */
OP_VARPCK_LG2(3), /* REPEATED INT64 */
OP_VARPCK_LG2(3), /* REPEATED UINT64 */
OP_VARPCK_LG2(2), /* REPEATED INT32 */
OP_FIXPCK_LG2(3), /* REPEATED FIXED64 */
OP_FIXPCK_LG2(2), /* REPEATED FIXED32 */
OP_VARPCK_LG2(0), /* REPEATED BOOL */
OP_STRING, /* REPEATED STRING */
OP_SUBMSG, /* REPEATED GROUP */
OP_SUBMSG, /* REPEATED MESSAGE */
OP_BYTES, /* REPEATED BYTES */
OP_VARPCK_LG2(2), /* REPEATED UINT32 */
OP_PACKED_ENUM, /* REPEATED ENUM */
OP_FIXPCK_LG2(2), /* REPEATED SFIXED32 */
OP_FIXPCK_LG2(3), /* REPEATED SFIXED64 */
OP_VARPCK_LG2(2), /* REPEATED SINT32 */
OP_VARPCK_LG2(3), /* REPEATED SINT64 */
/* Omitting MSGSET_*, because we never emit a repeated msgset type */
};
typedef union {
bool bool_val;
uint32_t uint32_val;
uint64_t uint64_val;
uint32_t size;
} wireval;
static const char* decode_msg(upb_Decoder* d, const char* ptr, upb_Message* msg,
const upb_MiniTable* layout);
UPB_NORETURN static void* decode_err(upb_Decoder* d, upb_DecodeStatus status) {
assert(status != kUpb_DecodeStatus_Ok);
UPB_LONGJMP(d->err, status);
}
const char* fastdecode_err(upb_Decoder* d, int status) {
assert(status != kUpb_DecodeStatus_Ok);
UPB_LONGJMP(d->err, status);
return NULL;
}
static void decode_verifyutf8(upb_Decoder* d, const char* buf, int len) {
if (!decode_verifyutf8_inl(buf, len))
decode_err(d, kUpb_DecodeStatus_BadUtf8);
}
static bool decode_reserve(upb_Decoder* d, upb_Array* arr, size_t elem) {
bool need_realloc = arr->size - arr->len < elem;
if (need_realloc && !_upb_array_realloc(arr, arr->len + elem, &d->arena)) {
decode_err(d, kUpb_DecodeStatus_OutOfMemory);
}
return need_realloc;
}
typedef struct {
const char* ptr;
uint64_t val;
} decode_vret;
UPB_NOINLINE
static decode_vret decode_longvarint64(const char* ptr, uint64_t val) {
decode_vret ret = {NULL, 0};
uint64_t byte;
int i;
for (i = 1; i < 10; i++) {
byte = (uint8_t)ptr[i];
val += (byte - 1) << (i * 7);
if (!(byte & 0x80)) {
ret.ptr = ptr + i + 1;
ret.val = val;
return ret;
}
}
return ret;
}
UPB_FORCEINLINE
static const char* decode_varint64(upb_Decoder* d, const char* ptr,
uint64_t* val) {
uint64_t byte = (uint8_t)*ptr;
if (UPB_LIKELY((byte & 0x80) == 0)) {
*val = byte;
return ptr + 1;
} else {
decode_vret res = decode_longvarint64(ptr, byte);
if (!res.ptr) return decode_err(d, kUpb_DecodeStatus_Malformed);
*val = res.val;
return res.ptr;
}
}
UPB_FORCEINLINE
static const char* decode_tag(upb_Decoder* d, const char* ptr, uint32_t* val) {
uint64_t byte = (uint8_t)*ptr;
if (UPB_LIKELY((byte & 0x80) == 0)) {
*val = byte;
return ptr + 1;
} else {
const char* start = ptr;
decode_vret res = decode_longvarint64(ptr, byte);
if (!res.ptr || res.ptr - start > 5 || res.val > UINT32_MAX) {
return decode_err(d, kUpb_DecodeStatus_Malformed);
}
*val = res.val;
return res.ptr;
}
}
UPB_FORCEINLINE
static const char* upb_Decoder_DecodeSize(upb_Decoder* d, const char* ptr,
uint32_t* size) {
uint64_t size64;
ptr = decode_varint64(d, ptr, &size64);
if (size64 >= INT32_MAX || ptr - d->end + (int)size64 > d->limit) {
decode_err(d, kUpb_DecodeStatus_Malformed);
}
*size = size64;
return ptr;
}
static void decode_munge_int32(wireval* val) {
if (!_upb_IsLittleEndian()) {
/* The next stage will memcpy(dst, &val, 4) */
val->uint32_val = val->uint64_val;
}
}
static void decode_munge(int type, wireval* val) {
switch (type) {
case kUpb_FieldType_Bool:
val->bool_val = val->uint64_val != 0;
break;
case kUpb_FieldType_SInt32: {
uint32_t n = val->uint64_val;
val->uint32_val = (n >> 1) ^ -(int32_t)(n & 1);
break;
}
case kUpb_FieldType_SInt64: {
uint64_t n = val->uint64_val;
val->uint64_val = (n >> 1) ^ -(int64_t)(n & 1);
break;
}
case kUpb_FieldType_Int32:
case kUpb_FieldType_UInt32:
case kUpb_FieldType_Enum:
decode_munge_int32(val);
break;
}
}
static upb_Message* decode_newsubmsg(upb_Decoder* d,
const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* field) {
const upb_MiniTable* subl = subs[field->submsg_index].submsg;
upb_Message* msg = _upb_Message_New_inl(subl, &d->arena);
if (!msg) decode_err(d, kUpb_DecodeStatus_OutOfMemory);
return msg;
}
UPB_NOINLINE
const char* decode_isdonefallback(upb_Decoder* d, const char* ptr,
int overrun) {
int status;
ptr = decode_isdonefallback_inl(d, ptr, overrun, &status);
if (ptr == NULL) {
return decode_err(d, status);
}
return ptr;
}
static const char* decode_readstr(upb_Decoder* d, const char* ptr, int size,
upb_StringView* str) {
if (d->options & kUpb_DecodeOption_AliasString) {
str->data = ptr;
} else {
char* data = upb_Arena_Malloc(&d->arena, size);
if (!data) return decode_err(d, kUpb_DecodeStatus_OutOfMemory);
memcpy(data, ptr, size);
str->data = data;
}
str->size = size;
return ptr + size;
}
UPB_FORCEINLINE
static const char* decode_tosubmsg2(upb_Decoder* d, const char* ptr,
upb_Message* submsg,
const upb_MiniTable* subl, int size) {
int saved_delta = decode_pushlimit(d, ptr, size);
if (--d->depth < 0) return decode_err(d, kUpb_DecodeStatus_MaxDepthExceeded);
ptr = decode_msg(d, ptr, submsg, subl);
if (d->end_group != DECODE_NOGROUP)
return decode_err(d, kUpb_DecodeStatus_Malformed);
decode_poplimit(d, ptr, saved_delta);
d->depth++;
return ptr;
}
UPB_FORCEINLINE
static const char* decode_tosubmsg(upb_Decoder* d, const char* ptr,
upb_Message* submsg,
const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* field, int size) {
return decode_tosubmsg2(d, ptr, submsg, subs[field->submsg_index].submsg,
size);
}
UPB_FORCEINLINE
static const char* decode_group(upb_Decoder* d, const char* ptr,
upb_Message* submsg, const upb_MiniTable* subl,
uint32_t number) {
if (--d->depth < 0) return decode_err(d, kUpb_DecodeStatus_MaxDepthExceeded);
if (decode_isdone(d, &ptr)) {
return decode_err(d, kUpb_DecodeStatus_Malformed);
}
ptr = decode_msg(d, ptr, submsg, subl);
if (d->end_group != number) return decode_err(d, kUpb_DecodeStatus_Malformed);
d->end_group = DECODE_NOGROUP;
d->depth++;
return ptr;
}
UPB_FORCEINLINE
static const char* decode_togroup(upb_Decoder* d, const char* ptr,
upb_Message* submsg,
const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* field) {
const upb_MiniTable* subl = subs[field->submsg_index].submsg;
return decode_group(d, ptr, submsg, subl, field->number);
}
static char* upb_Decoder_EncodeVarint32(uint32_t val, char* ptr) {
do {
uint8_t byte = val & 0x7fU;
val >>= 7;
if (val) byte |= 0x80U;
*(ptr++) = byte;
} while (val);
return ptr;
}
static void upb_Decode_AddUnknownVarints(upb_Decoder* d, upb_Message* msg,
uint32_t val1, uint32_t val2) {
char buf[20];
char* end = buf;
end = upb_Decoder_EncodeVarint32(val1, end);
end = upb_Decoder_EncodeVarint32(val2, end);
if (!_upb_Message_AddUnknown(msg, buf, end - buf, &d->arena)) {
decode_err(d, kUpb_DecodeStatus_OutOfMemory);
}
}
UPB_NOINLINE
static bool decode_checkenum_slow(upb_Decoder* d, const char* ptr,
upb_Message* msg, const upb_MiniTable_Enum* e,
const upb_MiniTable_Field* field,
uint32_t v) {
// OPT: binary search long lists?
int n = e->value_count;
for (int i = 0; i < n; i++) {
if ((uint32_t)e->values[i] == v) return true;
}
// Unrecognized enum goes into unknown fields.
// For packed fields the tag could be arbitrarily far in the past, so we
// just re-encode the tag and value here.
uint32_t tag = ((uint32_t)field->number << 3) | kUpb_WireType_Varint;
upb_Message* unknown_msg =
field->mode & kUpb_LabelFlags_IsExtension ? d->unknown_msg : msg;
upb_Decode_AddUnknownVarints(d, unknown_msg, tag, v);
return false;
}
UPB_FORCEINLINE
static bool decode_checkenum(upb_Decoder* d, const char* ptr, upb_Message* msg,
const upb_MiniTable_Enum* e,
const upb_MiniTable_Field* field, wireval* val) {
uint32_t v = val->uint32_val;
if (UPB_LIKELY(v < 64) && UPB_LIKELY(((1ULL << v) & e->mask))) return true;
return decode_checkenum_slow(d, ptr, msg, e, field, v);
}
UPB_NOINLINE
static const char* decode_enum_toarray(upb_Decoder* d, const char* ptr,
upb_Message* msg, upb_Array* arr,
const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* field,
wireval* val) {
const upb_MiniTable_Enum* e = subs[field->submsg_index].subenum;
if (!decode_checkenum(d, ptr, msg, e, field, val)) return ptr;
void* mem = UPB_PTR_AT(_upb_array_ptr(arr), arr->len * 4, void);
arr->len++;
memcpy(mem, val, 4);
return ptr;
}
UPB_FORCEINLINE
static const char* decode_fixed_packed(upb_Decoder* d, const char* ptr,
upb_Array* arr, wireval* val,
const upb_MiniTable_Field* field,
int lg2) {
int mask = (1 << lg2) - 1;
size_t count = val->size >> lg2;
if ((val->size & mask) != 0) {
// Length isn't a round multiple of elem size.
return decode_err(d, kUpb_DecodeStatus_Malformed);
}
decode_reserve(d, arr, count);
void* mem = UPB_PTR_AT(_upb_array_ptr(arr), arr->len << lg2, void);
arr->len += count;
// Note: if/when the decoder supports multi-buffer input, we will need to
// handle buffer seams here.
if (_upb_IsLittleEndian()) {
memcpy(mem, ptr, val->size);
ptr += val->size;
} else {
const char* end = ptr + val->size;
char* dst = mem;
while (ptr < end) {
if (lg2 == 2) {
uint32_t val;
memcpy(&val, ptr, sizeof(val));
val = _upb_BigEndian_Swap32(val);
memcpy(dst, &val, sizeof(val));
} else {
UPB_ASSERT(lg2 == 3);
uint64_t val;
memcpy(&val, ptr, sizeof(val));
val = _upb_BigEndian_Swap64(val);
memcpy(dst, &val, sizeof(val));
}
ptr += 1 << lg2;
dst += 1 << lg2;
}
}
return ptr;
}
UPB_FORCEINLINE
static const char* decode_varint_packed(upb_Decoder* d, const char* ptr,
upb_Array* arr, wireval* val,
const upb_MiniTable_Field* field,
int lg2) {
int scale = 1 << lg2;
int saved_limit = decode_pushlimit(d, ptr, val->size);
char* out = UPB_PTR_AT(_upb_array_ptr(arr), arr->len << lg2, void);
while (!decode_isdone(d, &ptr)) {
wireval elem;
ptr = decode_varint64(d, ptr, &elem.uint64_val);
decode_munge(field->descriptortype, &elem);
if (decode_reserve(d, arr, 1)) {
out = UPB_PTR_AT(_upb_array_ptr(arr), arr->len << lg2, void);
}
arr->len++;
memcpy(out, &elem, scale);
out += scale;
}
decode_poplimit(d, ptr, saved_limit);
return ptr;
}
UPB_NOINLINE
static const char* decode_enum_packed(upb_Decoder* d, const char* ptr,
upb_Message* msg, upb_Array* arr,
const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* field,
wireval* val) {
const upb_MiniTable_Enum* e = subs[field->submsg_index].subenum;
int saved_limit = decode_pushlimit(d, ptr, val->size);
char* out = UPB_PTR_AT(_upb_array_ptr(arr), arr->len * 4, void);
while (!decode_isdone(d, &ptr)) {
wireval elem;
ptr = decode_varint64(d, ptr, &elem.uint64_val);
decode_munge_int32(&elem);
if (!decode_checkenum(d, ptr, msg, e, field, &elem)) {
continue;
}
if (decode_reserve(d, arr, 1)) {
out = UPB_PTR_AT(_upb_array_ptr(arr), arr->len * 4, void);
}
arr->len++;
memcpy(out, &elem, 4);
out += 4;
}
decode_poplimit(d, ptr, saved_limit);
return ptr;
}
static const char* decode_toarray(upb_Decoder* d, const char* ptr,
upb_Message* msg,
const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* field,
wireval* val, int op) {
upb_Array** arrp = UPB_PTR_AT(msg, field->offset, void);
upb_Array* arr = *arrp;
void* mem;
if (arr) {
decode_reserve(d, arr, 1);
} else {
size_t lg2 = desctype_to_elem_size_lg2[field->descriptortype];
arr = _upb_Array_New(&d->arena, 4, lg2);
if (!arr) return decode_err(d, kUpb_DecodeStatus_OutOfMemory);
*arrp = arr;
}
switch (op) {
case OP_SCALAR_LG2(0):
case OP_SCALAR_LG2(2):
case OP_SCALAR_LG2(3):
/* Append scalar value. */
mem = UPB_PTR_AT(_upb_array_ptr(arr), arr->len << op, void);
arr->len++;
memcpy(mem, val, 1 << op);
return ptr;
case OP_STRING:
decode_verifyutf8(d, ptr, val->size);
/* Fallthrough. */
case OP_BYTES: {
/* Append bytes. */
upb_StringView* str = (upb_StringView*)_upb_array_ptr(arr) + arr->len;
arr->len++;
return decode_readstr(d, ptr, val->size, str);
}
case OP_SUBMSG: {
/* Append submessage / group. */
upb_Message* submsg = decode_newsubmsg(d, subs, field);
*UPB_PTR_AT(_upb_array_ptr(arr), arr->len * sizeof(void*), upb_Message*) =
submsg;
arr->len++;
if (UPB_UNLIKELY(field->descriptortype == kUpb_FieldType_Group)) {
return decode_togroup(d, ptr, submsg, subs, field);
} else {
return decode_tosubmsg(d, ptr, submsg, subs, field, val->size);
}
}
case OP_FIXPCK_LG2(2):
case OP_FIXPCK_LG2(3):
return decode_fixed_packed(d, ptr, arr, val, field,
op - OP_FIXPCK_LG2(0));
case OP_VARPCK_LG2(0):
case OP_VARPCK_LG2(2):
case OP_VARPCK_LG2(3):
return decode_varint_packed(d, ptr, arr, val, field,
op - OP_VARPCK_LG2(0));
case OP_ENUM:
return decode_enum_toarray(d, ptr, msg, arr, subs, field, val);
case OP_PACKED_ENUM:
return decode_enum_packed(d, ptr, msg, arr, subs, field, val);
default:
UPB_UNREACHABLE();
}
}
static const char* decode_tomap(upb_Decoder* d, const char* ptr,
upb_Message* msg, const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* field,
wireval* val) {
upb_Map** map_p = UPB_PTR_AT(msg, field->offset, upb_Map*);
upb_Map* map = *map_p;
upb_MapEntry ent;
const upb_MiniTable* entry = subs[field->submsg_index].submsg;
if (!map) {
/* Lazily create map. */
const upb_MiniTable_Field* key_field = &entry->fields[0];
const upb_MiniTable_Field* val_field = &entry->fields[1];
char key_size = desctype_to_mapsize[key_field->descriptortype];
char val_size = desctype_to_mapsize[val_field->descriptortype];
UPB_ASSERT(key_field->offset == 0);
UPB_ASSERT(val_field->offset == sizeof(upb_StringView));
map = _upb_Map_New(&d->arena, key_size, val_size);
*map_p = map;
}
/* Parse map entry. */
memset(&ent, 0, sizeof(ent));
if (entry->fields[1].descriptortype == kUpb_FieldType_Message ||
entry->fields[1].descriptortype == kUpb_FieldType_Group) {
/* Create proactively to handle the case where it doesn't appear. */
ent.v.val =
upb_value_ptr(_upb_Message_New(entry->subs[0].submsg, &d->arena));
}
const char* start = ptr;
ptr = decode_tosubmsg(d, ptr, &ent.k, subs, field, val->size);
// check if ent had any unknown fields
size_t size;
upb_Message_GetUnknown(&ent.k, &size);
if (size != 0) {
uint32_t tag = ((uint32_t)field->number << 3) | kUpb_WireType_Delimited;
upb_Decode_AddUnknownVarints(d, msg, tag, (uint32_t)(ptr - start));
if (!_upb_Message_AddUnknown(msg, start, ptr - start, &d->arena)) {
decode_err(d, kUpb_DecodeStatus_OutOfMemory);
}
} else {
if (_upb_Map_Insert(map, &ent.k, map->key_size, &ent.v, map->val_size,
&d->arena) == _kUpb_MapInsertStatus_OutOfMemory) {
decode_err(d, kUpb_DecodeStatus_OutOfMemory);
}
}
return ptr;
}
static const char* decode_tomsg(upb_Decoder* d, const char* ptr,
upb_Message* msg, const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* field, wireval* val,
int op) {
void* mem = UPB_PTR_AT(msg, field->offset, void);
int type = field->descriptortype;
if (UPB_UNLIKELY(op == OP_ENUM) &&
!decode_checkenum(d, ptr, msg, subs[field->submsg_index].subenum, field,
val)) {
return ptr;
}
/* Set presence if necessary. */
if (field->presence > 0) {
_upb_sethas_field(msg, field);
} else if (field->presence < 0) {
/* Oneof case */
uint32_t* oneof_case = _upb_oneofcase_field(msg, field);
if (op == OP_SUBMSG && *oneof_case != field->number) {
memset(mem, 0, sizeof(void*));
}
*oneof_case = field->number;
}
/* Store into message. */
switch (op) {
case OP_SUBMSG: {
upb_Message** submsgp = mem;
upb_Message* submsg = *submsgp;
if (!submsg) {
submsg = decode_newsubmsg(d, subs, field);
*submsgp = submsg;
}
if (UPB_UNLIKELY(type == kUpb_FieldType_Group)) {
ptr = decode_togroup(d, ptr, submsg, subs, field);
} else {
ptr = decode_tosubmsg(d, ptr, submsg, subs, field, val->size);
}
break;
}
case OP_STRING:
decode_verifyutf8(d, ptr, val->size);
/* Fallthrough. */
case OP_BYTES:
return decode_readstr(d, ptr, val->size, mem);
case OP_SCALAR_LG2(3):
memcpy(mem, val, 8);
break;
case OP_ENUM:
case OP_SCALAR_LG2(2):
memcpy(mem, val, 4);
break;
case OP_SCALAR_LG2(0):
memcpy(mem, val, 1);
break;
default:
UPB_UNREACHABLE();
}
return ptr;
}
UPB_NOINLINE
const char* decode_checkrequired(upb_Decoder* d, const char* ptr,
const upb_Message* msg,
const upb_MiniTable* l) {
assert(l->required_count);
if (UPB_LIKELY((d->options & kUpb_DecodeOption_CheckRequired) == 0)) {
return ptr;
}
uint64_t msg_head;
memcpy(&msg_head, msg, 8);
msg_head = _upb_BigEndian_Swap64(msg_head);
if (upb_MiniTable_requiredmask(l) & ~msg_head) {
d->missing_required = true;
}
return ptr;
}
UPB_FORCEINLINE
static bool decode_tryfastdispatch(upb_Decoder* d, const char** ptr,
upb_Message* msg,
const upb_MiniTable* layout) {
#if UPB_FASTTABLE
if (layout && layout->table_mask != (unsigned char)-1) {
uint16_t tag = fastdecode_loadtag(*ptr);
intptr_t table = decode_totable(layout);
*ptr = fastdecode_tagdispatch(d, *ptr, msg, table, 0, tag);
return true;
}
#endif
return false;
}
static const char* upb_Decoder_SkipField(upb_Decoder* d, const char* ptr,
uint32_t tag) {
int field_number = tag >> 3;
int wire_type = tag & 7;
switch (wire_type) {
case kUpb_WireType_Varint: {
uint64_t val;
return decode_varint64(d, ptr, &val);
}
case kUpb_WireType_64Bit:
return ptr + 8;
case kUpb_WireType_32Bit:
return ptr + 4;
case kUpb_WireType_Delimited: {
uint32_t size;
ptr = upb_Decoder_DecodeSize(d, ptr, &size);
return ptr + size;
}
case kUpb_WireType_StartGroup:
return decode_group(d, ptr, NULL, NULL, field_number);
default:
decode_err(d, kUpb_DecodeStatus_Malformed);
}
}
enum {
kStartItemTag = ((1 << 3) | kUpb_WireType_StartGroup),
kEndItemTag = ((1 << 3) | kUpb_WireType_EndGroup),
kTypeIdTag = ((2 << 3) | kUpb_WireType_Varint),
kMessageTag = ((3 << 3) | kUpb_WireType_Delimited),
};
static void upb_Decoder_AddKnownMessageSetItem(
upb_Decoder* d, upb_Message* msg, const upb_MiniTable_Extension* item_mt,
const char* data, uint32_t size) {
upb_Message_Extension* ext =
_upb_Message_GetOrCreateExtension(msg, item_mt, &d->arena);
if (UPB_UNLIKELY(!ext)) decode_err(d, kUpb_DecodeStatus_OutOfMemory);
upb_Message* submsg = decode_newsubmsg(d, &ext->ext->sub, &ext->ext->field);
upb_DecodeStatus status = upb_Decode(data, size, submsg, item_mt->sub.submsg,
d->extreg, d->options, &d->arena);
memcpy(&ext->data, &submsg, sizeof(submsg));
if (status != kUpb_DecodeStatus_Ok) decode_err(d, status);
}
static void upb_Decoder_AddUnknownMessageSetItem(upb_Decoder* d,
upb_Message* msg,
uint32_t type_id,
const char* message_data,
uint32_t message_size) {
char buf[60];
char* ptr = buf;
ptr = upb_Decoder_EncodeVarint32(kStartItemTag, ptr);
ptr = upb_Decoder_EncodeVarint32(kTypeIdTag, ptr);
ptr = upb_Decoder_EncodeVarint32(type_id, ptr);
ptr = upb_Decoder_EncodeVarint32(kMessageTag, ptr);
ptr = upb_Decoder_EncodeVarint32(message_size, ptr);
char* split = ptr;
ptr = upb_Decoder_EncodeVarint32(kEndItemTag, ptr);
char* end = ptr;
if (!_upb_Message_AddUnknown(msg, buf, split - buf, &d->arena) ||
!_upb_Message_AddUnknown(msg, message_data, message_size, &d->arena) ||
!_upb_Message_AddUnknown(msg, split, end - split, &d->arena)) {
decode_err(d, kUpb_DecodeStatus_OutOfMemory);
}
}
static void upb_Decoder_AddMessageSetItem(upb_Decoder* d, upb_Message* msg,
const upb_MiniTable* layout,
uint32_t type_id, const char* data,
uint32_t size) {
const upb_MiniTable_Extension* item_mt =
_upb_extreg_get(d->extreg, layout, type_id);
if (item_mt) {
upb_Decoder_AddKnownMessageSetItem(d, msg, item_mt, data, size);
} else {
upb_Decoder_AddUnknownMessageSetItem(d, msg, type_id, data, size);
}
}
static const char* upb_Decoder_DecodeMessageSetItem(
upb_Decoder* d, const char* ptr, upb_Message* msg,
const upb_MiniTable* layout) {
uint32_t type_id = 0;
upb_StringView preserved = {NULL, 0};
typedef enum {
kUpb_HaveId = 1 << 0,
kUpb_HavePayload = 1 << 1,
} StateMask;
StateMask state_mask = 0;
while (!decode_isdone(d, &ptr)) {
uint32_t tag;
ptr = decode_tag(d, ptr, &tag);
switch (tag) {
case kEndItemTag:
return ptr;
case kTypeIdTag: {
uint64_t tmp;
ptr = decode_varint64(d, ptr, &tmp);
if (state_mask & kUpb_HaveId) break; // Ignore dup.
state_mask |= kUpb_HaveId;
type_id = tmp;
if (state_mask & kUpb_HavePayload) {
upb_Decoder_AddMessageSetItem(d, msg, layout, type_id, preserved.data,
preserved.size);
}
break;
}
case kMessageTag: {
uint32_t size;
ptr = upb_Decoder_DecodeSize(d, ptr, &size);
const char* data = ptr;
ptr += size;
if (state_mask & kUpb_HavePayload) break; // Ignore dup.
state_mask |= kUpb_HavePayload;
if (state_mask & kUpb_HaveId) {
upb_Decoder_AddMessageSetItem(d, msg, layout, type_id, data, size);
} else {
// Out of order, we must preserve the payload.
preserved.data = data;
preserved.size = size;
}
break;
}
default:
// We do not preserve unexpected fields inside a message set item.
ptr = upb_Decoder_SkipField(d, ptr, tag);
break;
}
}
decode_err(d, kUpb_DecodeStatus_Malformed);
}
static const upb_MiniTable_Field* decode_findfield(upb_Decoder* d,
const upb_MiniTable* l,
uint32_t field_number,
int* last_field_index) {
static upb_MiniTable_Field none = {0, 0, 0, 0, 0, 0};
if (l == NULL) return &none;
size_t idx = ((size_t)field_number) - 1; // 0 wraps to SIZE_MAX
if (idx < l->dense_below) {
/* Fastest case: index into dense fields. */
goto found;
}
if (l->dense_below < l->field_count) {
/* Linear search non-dense fields. Resume scanning from last_field_index
* since fields are usually in order. */
int last = *last_field_index;
for (idx = last; idx < l->field_count; idx++) {
if (l->fields[idx].number == field_number) {
goto found;
}
}
for (idx = l->dense_below; idx < last; idx++) {
if (l->fields[idx].number == field_number) {
goto found;
}
}
}
if (d->extreg) {
switch (l->ext) {
case kUpb_ExtMode_Extendable: {
const upb_MiniTable_Extension* ext =
_upb_extreg_get(d->extreg, l, field_number);
if (ext) return &ext->field;
break;
}
case kUpb_ExtMode_IsMessageSet:
if (field_number == _UPB_MSGSET_ITEM) {
static upb_MiniTable_Field item = {0, 0, 0, 0, TYPE_MSGSET_ITEM, 0};
return &item;
}
break;
}
}
return &none; /* Unknown field. */
found:
UPB_ASSERT(l->fields[idx].number == field_number);
*last_field_index = idx;
return &l->fields[idx];
}
UPB_FORCEINLINE
static const char* decode_wireval(upb_Decoder* d, const char* ptr,
const upb_MiniTable_Field* field,
int wire_type, wireval* val, int* op) {
switch (wire_type) {
case kUpb_WireType_Varint:
ptr = decode_varint64(d, ptr, &val->uint64_val);
*op = varint_ops[field->descriptortype];
decode_munge(field->descriptortype, val);
return ptr;
case kUpb_WireType_32Bit:
memcpy(&val->uint32_val, ptr, 4);
val->uint32_val = _upb_BigEndian_Swap32(val->uint32_val);
*op = OP_SCALAR_LG2(2);
if (((1 << field->descriptortype) & FIXED32_OK_MASK) == 0) {
*op = OP_UNKNOWN;
}
return ptr + 4;
case kUpb_WireType_64Bit:
memcpy(&val->uint64_val, ptr, 8);
val->uint64_val = _upb_BigEndian_Swap64(val->uint64_val);
*op = OP_SCALAR_LG2(3);
if (((1 << field->descriptortype) & FIXED64_OK_MASK) == 0) {
*op = OP_UNKNOWN;
}
return ptr + 8;
case kUpb_WireType_Delimited: {
int ndx = field->descriptortype;
if (upb_FieldMode_Get(field) == kUpb_FieldMode_Array) ndx += TYPE_COUNT;
ptr = upb_Decoder_DecodeSize(d, ptr, &val->size);
*op = delim_ops[ndx];
return ptr;
}
case kUpb_WireType_StartGroup:
val->uint32_val = field->number;
if (field->descriptortype == kUpb_FieldType_Group) {
*op = OP_SUBMSG;
} else if (field->descriptortype == TYPE_MSGSET_ITEM) {
*op = OP_MSGSET_ITEM;
} else {
*op = OP_UNKNOWN;
}
return ptr;
default:
break;
}
return decode_err(d, kUpb_DecodeStatus_Malformed);
}
UPB_FORCEINLINE
static const char* decode_known(upb_Decoder* d, const char* ptr,
upb_Message* msg, const upb_MiniTable* layout,
const upb_MiniTable_Field* field, int op,
wireval* val) {
const upb_MiniTable_Sub* subs = layout->subs;
uint8_t mode = field->mode;
if (UPB_UNLIKELY(mode & kUpb_LabelFlags_IsExtension)) {
const upb_MiniTable_Extension* ext_layout =
(const upb_MiniTable_Extension*)field;
upb_Message_Extension* ext =
_upb_Message_GetOrCreateExtension(msg, ext_layout, &d->arena);
if (UPB_UNLIKELY(!ext)) return decode_err(d, kUpb_DecodeStatus_OutOfMemory);
d->unknown_msg = msg;
msg = &ext->data;
subs = &ext->ext->sub;
}
switch (mode & kUpb_FieldMode_Mask) {
case kUpb_FieldMode_Array:
return decode_toarray(d, ptr, msg, subs, field, val, op);
case kUpb_FieldMode_Map:
return decode_tomap(d, ptr, msg, subs, field, val);
case kUpb_FieldMode_Scalar:
return decode_tomsg(d, ptr, msg, subs, field, val, op);
default:
UPB_UNREACHABLE();
}
}
static const char* decode_reverse_skip_varint(const char* ptr, uint32_t val) {
uint32_t seen = 0;
do {
ptr--;
seen <<= 7;
seen |= *ptr & 0x7f;
} while (seen != val);
return ptr;
}
static const char* decode_unknown(upb_Decoder* d, const char* ptr,
upb_Message* msg, int field_number,
int wire_type, wireval val) {
if (field_number == 0) return decode_err(d, kUpb_DecodeStatus_Malformed);
// Since unknown fields are the uncommon case, we do a little extra work here
// to walk backwards through the buffer to find the field start. This frees
// up a register in the fast paths (when the field is known), which leads to
// significant speedups in benchmarks.
const char* start = ptr;
if (wire_type == kUpb_WireType_Delimited) ptr += val.size;
if (msg) {
switch (wire_type) {
case kUpb_WireType_Varint:
case kUpb_WireType_Delimited:
start--;
while (start[-1] & 0x80) start--;
break;
case kUpb_WireType_32Bit:
start -= 4;
break;
case kUpb_WireType_64Bit:
start -= 8;
break;
default:
break;
}
assert(start == d->debug_valstart);
uint32_t tag = ((uint32_t)field_number << 3) | wire_type;
start = decode_reverse_skip_varint(start, tag);
assert(start == d->debug_tagstart);
if (wire_type == kUpb_WireType_StartGroup) {
d->unknown = start;
d->unknown_msg = msg;
ptr = decode_group(d, ptr, NULL, NULL, field_number);
start = d->unknown;
d->unknown = NULL;
}
if (!_upb_Message_AddUnknown(msg, start, ptr - start, &d->arena)) {
return decode_err(d, kUpb_DecodeStatus_OutOfMemory);
}
} else if (wire_type == kUpb_WireType_StartGroup) {
ptr = decode_group(d, ptr, NULL, NULL, field_number);
}
return ptr;
}
UPB_NOINLINE
static const char* decode_msg(upb_Decoder* d, const char* ptr, upb_Message* msg,
const upb_MiniTable* layout) {
int last_field_index = 0;
#if UPB_FASTTABLE
// The first time we want to skip fast dispatch, because we may have just been
// invoked by the fast parser to handle a case that it bailed on.
if (!decode_isdone(d, &ptr)) goto nofast;
#endif
while (!decode_isdone(d, &ptr)) {
uint32_t tag;
const upb_MiniTable_Field* field;
int field_number;
int wire_type;
wireval val;
int op;
if (decode_tryfastdispatch(d, &ptr, msg, layout)) break;
#if UPB_FASTTABLE
nofast:
#endif
#ifndef NDEBUG
d->debug_tagstart = ptr;
#endif
UPB_ASSERT(ptr < d->limit_ptr);
ptr = decode_tag(d, ptr, &tag);
field_number = tag >> 3;
wire_type = tag & 7;
#ifndef NDEBUG
d->debug_valstart = ptr;
#endif
if (wire_type == kUpb_WireType_EndGroup) {
d->end_group = field_number;
return ptr;
}
field = decode_findfield(d, layout, field_number, &last_field_index);
ptr = decode_wireval(d, ptr, field, wire_type, &val, &op);
if (op >= 0) {
ptr = decode_known(d, ptr, msg, layout, field, op, &val);
} else {
switch (op) {
case OP_UNKNOWN:
ptr = decode_unknown(d, ptr, msg, field_number, wire_type, val);
break;
case OP_MSGSET_ITEM:
ptr = upb_Decoder_DecodeMessageSetItem(d, ptr, msg, layout);
break;
}
}
}
return UPB_UNLIKELY(layout && layout->required_count)
? decode_checkrequired(d, ptr, msg, layout)
: ptr;
}
const char* fastdecode_generic(struct upb_Decoder* d, const char* ptr,
upb_Message* msg, intptr_t table,
uint64_t hasbits, uint64_t data) {
(void)data;
*(uint32_t*)msg |= hasbits;
return decode_msg(d, ptr, msg, decode_totablep(table));
}
static upb_DecodeStatus decode_top(struct upb_Decoder* d, const char* buf,
void* msg, const upb_MiniTable* l) {
if (!decode_tryfastdispatch(d, &buf, msg, l)) {
decode_msg(d, buf, msg, l);
}
if (d->end_group != DECODE_NOGROUP) return kUpb_DecodeStatus_Malformed;
if (d->missing_required) return kUpb_DecodeStatus_MissingRequired;
return kUpb_DecodeStatus_Ok;
}
upb_DecodeStatus upb_Decode(const char* buf, size_t size, void* msg,
const upb_MiniTable* l,
const upb_ExtensionRegistry* extreg, int options,
upb_Arena* arena) {
upb_Decoder state;
unsigned depth = (unsigned)options >> 16;
if (size <= 16) {
memset(&state.patch, 0, 32);
if (size) memcpy(&state.patch, buf, size);
buf = state.patch;
state.end = buf + size;
state.limit = 0;
options &= ~kUpb_DecodeOption_AliasString; // Can't alias patch buf.
} else {
state.end = buf + size - 16;
state.limit = 16;
}
state.extreg = extreg;
state.limit_ptr = state.end;
state.unknown = NULL;
state.depth = depth ? depth : 64;
state.end_group = DECODE_NOGROUP;
state.options = (uint16_t)options;
state.missing_required = false;
state.arena.head = arena->head;
state.arena.last_size = arena->last_size;
state.arena.cleanup_metadata = arena->cleanup_metadata;
state.arena.parent = arena;
upb_DecodeStatus status = UPB_SETJMP(state.err);
if (UPB_LIKELY(status == kUpb_DecodeStatus_Ok)) {
status = decode_top(&state, buf, msg, l);
}
arena->head.ptr = state.arena.head.ptr;
arena->head.end = state.arena.head.end;
arena->cleanup_metadata = state.arena.cleanup_metadata;
return status;
}
#undef OP_UNKNOWN
#undef OP_SKIP
#undef OP_SCALAR_LG2
#undef OP_FIXPCK_LG2
#undef OP_VARPCK_LG2
#undef OP_STRING
#undef OP_BYTES
#undef OP_SUBMSG
/** upb/encode.c ************************************************************/
/* We encode backwards, to avoid pre-computing lengths (one-pass encode). */
#include <setjmp.h>
#include <string.h>
/* Must be last. */
#define UPB_PB_VARINT_MAX_LEN 10
UPB_NOINLINE
static size_t encode_varint64(uint64_t val, char* buf) {
size_t i = 0;
do {
uint8_t byte = val & 0x7fU;
val >>= 7;
if (val) byte |= 0x80U;
buf[i++] = byte;
} while (val);
return i;
}
static uint32_t encode_zz32(int32_t n) {
return ((uint32_t)n << 1) ^ (n >> 31);
}
static uint64_t encode_zz64(int64_t n) {
return ((uint64_t)n << 1) ^ (n >> 63);
}
typedef struct {
jmp_buf err;
upb_alloc* alloc;
char *buf, *ptr, *limit;
int options;
int depth;
_upb_mapsorter sorter;
} upb_encstate;
static size_t upb_roundup_pow2(size_t bytes) {
size_t ret = 128;
while (ret < bytes) {
ret *= 2;
}
return ret;
}
UPB_NORETURN static void encode_err(upb_encstate* e) { UPB_LONGJMP(e->err, 1); }
UPB_NOINLINE
static void encode_growbuffer(upb_encstate* e, size_t bytes) {
size_t old_size = e->limit - e->buf;
size_t new_size = upb_roundup_pow2(bytes + (e->limit - e->ptr));
char* new_buf = upb_realloc(e->alloc, e->buf, old_size, new_size);
if (!new_buf) encode_err(e);
/* We want previous data at the end, realloc() put it at the beginning. */
if (old_size > 0) {
memmove(new_buf + new_size - old_size, e->buf, old_size);
}
e->ptr = new_buf + new_size - (e->limit - e->ptr);
e->limit = new_buf + new_size;
e->buf = new_buf;
e->ptr -= bytes;
}
/* Call to ensure that at least "bytes" bytes are available for writing at
* e->ptr. Returns false if the bytes could not be allocated. */
UPB_FORCEINLINE
static void encode_reserve(upb_encstate* e, size_t bytes) {
if ((size_t)(e->ptr - e->buf) < bytes) {
encode_growbuffer(e, bytes);
return;
}
e->ptr -= bytes;
}
/* Writes the given bytes to the buffer, handling reserve/advance. */
static void encode_bytes(upb_encstate* e, const void* data, size_t len) {
if (len == 0) return; /* memcpy() with zero size is UB */
encode_reserve(e, len);
memcpy(e->ptr, data, len);
}
static void encode_fixed64(upb_encstate* e, uint64_t val) {
val = _upb_BigEndian_Swap64(val);
encode_bytes(e, &val, sizeof(uint64_t));
}
static void encode_fixed32(upb_encstate* e, uint32_t val) {
val = _upb_BigEndian_Swap32(val);
encode_bytes(e, &val, sizeof(uint32_t));
}
UPB_NOINLINE
static void encode_longvarint(upb_encstate* e, uint64_t val) {
size_t len;
char* start;
encode_reserve(e, UPB_PB_VARINT_MAX_LEN);
len = encode_varint64(val, e->ptr);
start = e->ptr + UPB_PB_VARINT_MAX_LEN - len;
memmove(start, e->ptr, len);
e->ptr = start;
}
UPB_FORCEINLINE
static void encode_varint(upb_encstate* e, uint64_t val) {
if (val < 128 && e->ptr != e->buf) {
--e->ptr;
*e->ptr = val;
} else {
encode_longvarint(e, val);
}
}
static void encode_double(upb_encstate* e, double d) {
uint64_t u64;
UPB_ASSERT(sizeof(double) == sizeof(uint64_t));
memcpy(&u64, &d, sizeof(uint64_t));
encode_fixed64(e, u64);
}
static void encode_float(upb_encstate* e, float d) {
uint32_t u32;
UPB_ASSERT(sizeof(float) == sizeof(uint32_t));
memcpy(&u32, &d, sizeof(uint32_t));
encode_fixed32(e, u32);
}
static void encode_tag(upb_encstate* e, uint32_t field_number,
uint8_t wire_type) {
encode_varint(e, (field_number << 3) | wire_type);
}
static void encode_fixedarray(upb_encstate* e, const upb_Array* arr,
size_t elem_size, uint32_t tag) {
size_t bytes = arr->len * elem_size;
const char* data = _upb_array_constptr(arr);
const char* ptr = data + bytes - elem_size;
if (tag || !_upb_IsLittleEndian()) {
while (true) {
if (elem_size == 4) {
uint32_t val;
memcpy(&val, ptr, sizeof(val));
val = _upb_BigEndian_Swap32(val);
encode_bytes(e, &val, elem_size);
} else {
UPB_ASSERT(elem_size == 8);
uint64_t val;
memcpy(&val, ptr, sizeof(val));
val = _upb_BigEndian_Swap64(val);
encode_bytes(e, &val, elem_size);
}
if (tag) encode_varint(e, tag);
if (ptr == data) break;
ptr -= elem_size;
}
} else {
encode_bytes(e, data, bytes);
}
}
static void encode_message(upb_encstate* e, const upb_Message* msg,
const upb_MiniTable* m, size_t* size);
static void encode_scalar(upb_encstate* e, const void* _field_mem,
const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* f) {
const char* field_mem = _field_mem;
int wire_type;
#define CASE(ctype, type, wtype, encodeval) \
{ \
ctype val = *(ctype*)field_mem; \
encode_##type(e, encodeval); \
wire_type = wtype; \
break; \
}
switch (f->descriptortype) {
case kUpb_FieldType_Double:
CASE(double, double, kUpb_WireType_64Bit, val);
case kUpb_FieldType_Float:
CASE(float, float, kUpb_WireType_32Bit, val);
case kUpb_FieldType_Int64:
case kUpb_FieldType_UInt64:
CASE(uint64_t, varint, kUpb_WireType_Varint, val);
case kUpb_FieldType_UInt32:
CASE(uint32_t, varint, kUpb_WireType_Varint, val);
case kUpb_FieldType_Int32:
case kUpb_FieldType_Enum:
CASE(int32_t, varint, kUpb_WireType_Varint, (int64_t)val);
case kUpb_FieldType_SFixed64:
case kUpb_FieldType_Fixed64:
CASE(uint64_t, fixed64, kUpb_WireType_64Bit, val);
case kUpb_FieldType_Fixed32:
case kUpb_FieldType_SFixed32:
CASE(uint32_t, fixed32, kUpb_WireType_32Bit, val);
case kUpb_FieldType_Bool:
CASE(bool, varint, kUpb_WireType_Varint, val);
case kUpb_FieldType_SInt32:
CASE(int32_t, varint, kUpb_WireType_Varint, encode_zz32(val));
case kUpb_FieldType_SInt64:
CASE(int64_t, varint, kUpb_WireType_Varint, encode_zz64(val));
case kUpb_FieldType_String:
case kUpb_FieldType_Bytes: {
upb_StringView view = *(upb_StringView*)field_mem;
encode_bytes(e, view.data, view.size);
encode_varint(e, view.size);
wire_type = kUpb_WireType_Delimited;
break;
}
case kUpb_FieldType_Group: {
size_t size;
void* submsg = *(void**)field_mem;
const upb_MiniTable* subm = subs[f->submsg_index].submsg;
if (submsg == NULL) {
return;
}
if (--e->depth == 0) encode_err(e);
encode_tag(e, f->number, kUpb_WireType_EndGroup);
encode_message(e, submsg, subm, &size);
wire_type = kUpb_WireType_StartGroup;
e->depth++;
break;
}
case kUpb_FieldType_Message: {
size_t size;
void* submsg = *(void**)field_mem;
const upb_MiniTable* subm = subs[f->submsg_index].submsg;
if (submsg == NULL) {
return;
}
if (--e->depth == 0) encode_err(e);
encode_message(e, submsg, subm, &size);
encode_varint(e, size);
wire_type = kUpb_WireType_Delimited;
e->depth++;
break;
}
default:
UPB_UNREACHABLE();
}
#undef CASE
encode_tag(e, f->number, wire_type);
}
static void encode_array(upb_encstate* e, const upb_Message* msg,
const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* f) {
const upb_Array* arr = *UPB_PTR_AT(msg, f->offset, upb_Array*);
bool packed = f->mode & kUpb_LabelFlags_IsPacked;
size_t pre_len = e->limit - e->ptr;
if (arr == NULL || arr->len == 0) {
return;
}
#define VARINT_CASE(ctype, encode) \
{ \
const ctype* start = _upb_array_constptr(arr); \
const ctype* ptr = start + arr->len; \
uint32_t tag = packed ? 0 : (f->number << 3) | kUpb_WireType_Varint; \
do { \
ptr--; \
encode_varint(e, encode); \
if (tag) encode_varint(e, tag); \
} while (ptr != start); \
} \
break;
#define TAG(wire_type) (packed ? 0 : (f->number << 3 | wire_type))
switch (f->descriptortype) {
case kUpb_FieldType_Double:
encode_fixedarray(e, arr, sizeof(double), TAG(kUpb_WireType_64Bit));
break;
case kUpb_FieldType_Float:
encode_fixedarray(e, arr, sizeof(float), TAG(kUpb_WireType_32Bit));
break;
case kUpb_FieldType_SFixed64:
case kUpb_FieldType_Fixed64:
encode_fixedarray(e, arr, sizeof(uint64_t), TAG(kUpb_WireType_64Bit));
break;
case kUpb_FieldType_Fixed32:
case kUpb_FieldType_SFixed32:
encode_fixedarray(e, arr, sizeof(uint32_t), TAG(kUpb_WireType_32Bit));
break;
case kUpb_FieldType_Int64:
case kUpb_FieldType_UInt64:
VARINT_CASE(uint64_t, *ptr);
case kUpb_FieldType_UInt32:
VARINT_CASE(uint32_t, *ptr);
case kUpb_FieldType_Int32:
case kUpb_FieldType_Enum:
VARINT_CASE(int32_t, (int64_t)*ptr);
case kUpb_FieldType_Bool:
VARINT_CASE(bool, *ptr);
case kUpb_FieldType_SInt32:
VARINT_CASE(int32_t, encode_zz32(*ptr));
case kUpb_FieldType_SInt64:
VARINT_CASE(int64_t, encode_zz64(*ptr));
case kUpb_FieldType_String:
case kUpb_FieldType_Bytes: {
const upb_StringView* start = _upb_array_constptr(arr);
const upb_StringView* ptr = start + arr->len;
do {
ptr--;
encode_bytes(e, ptr->data, ptr->size);
encode_varint(e, ptr->size);
encode_tag(e, f->number, kUpb_WireType_Delimited);
} while (ptr != start);
return;
}
case kUpb_FieldType_Group: {
const void* const* start = _upb_array_constptr(arr);
const void* const* ptr = start + arr->len;
const upb_MiniTable* subm = subs[f->submsg_index].submsg;
if (--e->depth == 0) encode_err(e);
do {
size_t size;
ptr--;
encode_tag(e, f->number, kUpb_WireType_EndGroup);
encode_message(e, *ptr, subm, &size);
encode_tag(e, f->number, kUpb_WireType_StartGroup);
} while (ptr != start);
e->depth++;
return;
}
case kUpb_FieldType_Message: {
const void* const* start = _upb_array_constptr(arr);
const void* const* ptr = start + arr->len;
const upb_MiniTable* subm = subs[f->submsg_index].submsg;
if (--e->depth == 0) encode_err(e);
do {
size_t size;
ptr--;
encode_message(e, *ptr, subm, &size);
encode_varint(e, size);
encode_tag(e, f->number, kUpb_WireType_Delimited);
} while (ptr != start);
e->depth++;
return;
}
}
#undef VARINT_CASE
if (packed) {
encode_varint(e, e->limit - e->ptr - pre_len);
encode_tag(e, f->number, kUpb_WireType_Delimited);
}
}
static void encode_mapentry(upb_encstate* e, uint32_t number,
const upb_MiniTable* layout,
const upb_MapEntry* ent) {
const upb_MiniTable_Field* key_field = &layout->fields[0];
const upb_MiniTable_Field* val_field = &layout->fields[1];
size_t pre_len = e->limit - e->ptr;
size_t size;
encode_scalar(e, &ent->v, layout->subs, val_field);
encode_scalar(e, &ent->k, layout->subs, key_field);
size = (e->limit - e->ptr) - pre_len;
encode_varint(e, size);
encode_tag(e, number, kUpb_WireType_Delimited);
}
static void encode_map(upb_encstate* e, const upb_Message* msg,
const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* f) {
const upb_Map* map = *UPB_PTR_AT(msg, f->offset, const upb_Map*);
const upb_MiniTable* layout = subs[f->submsg_index].submsg;
UPB_ASSERT(layout->field_count == 2);
if (map == NULL) return;
if (e->options & kUpb_Encode_Deterministic) {
_upb_sortedmap sorted;
_upb_mapsorter_pushmap(&e->sorter, layout->fields[0].descriptortype, map,
&sorted);
upb_MapEntry ent;
while (_upb_sortedmap_next(&e->sorter, map, &sorted, &ent)) {
encode_mapentry(e, f->number, layout, &ent);
}
_upb_mapsorter_popmap(&e->sorter, &sorted);
} else {
upb_strtable_iter i;
upb_strtable_begin(&i, &map->table);
for (; !upb_strtable_done(&i); upb_strtable_next(&i)) {
upb_StringView key = upb_strtable_iter_key(&i);
const upb_value val = upb_strtable_iter_value(&i);
upb_MapEntry ent;
_upb_map_fromkey(key, &ent.k, map->key_size);
_upb_map_fromvalue(val, &ent.v, map->val_size);
encode_mapentry(e, f->number, layout, &ent);
}
}
}
static bool encode_shouldencode(upb_encstate* e, const upb_Message* msg,
const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* f) {
if (f->presence == 0) {
/* Proto3 presence or map/array. */
const void* mem = UPB_PTR_AT(msg, f->offset, void);
switch (f->mode >> kUpb_FieldRep_Shift) {
case kUpb_FieldRep_1Byte: {
char ch;
memcpy(&ch, mem, 1);
return ch != 0;
}
#if UINTPTR_MAX == 0xffffffff
case kUpb_FieldRep_Pointer:
#endif
case kUpb_FieldRep_4Byte: {
uint32_t u32;
memcpy(&u32, mem, 4);
return u32 != 0;
}
#if UINTPTR_MAX != 0xffffffff
case kUpb_FieldRep_Pointer:
#endif
case kUpb_FieldRep_8Byte: {
uint64_t u64;
memcpy(&u64, mem, 8);
return u64 != 0;
}
case kUpb_FieldRep_StringView: {
const upb_StringView* str = (const upb_StringView*)mem;
return str->size != 0;
}
default:
UPB_UNREACHABLE();
}
} else if (f->presence > 0) {
/* Proto2 presence: hasbit. */
return _upb_hasbit_field(msg, f);
} else {
/* Field is in a oneof. */
return _upb_getoneofcase_field(msg, f) == f->number;
}
}
static void encode_field(upb_encstate* e, const upb_Message* msg,
const upb_MiniTable_Sub* subs,
const upb_MiniTable_Field* field) {
switch (upb_FieldMode_Get(field)) {
case kUpb_FieldMode_Array:
encode_array(e, msg, subs, field);
break;
case kUpb_FieldMode_Map:
encode_map(e, msg, subs, field);
break;
case kUpb_FieldMode_Scalar:
encode_scalar(e, UPB_PTR_AT(msg, field->offset, void), subs, field);
break;
default:
UPB_UNREACHABLE();
}
}
/* message MessageSet {
* repeated group Item = 1 {
* required int32 type_id = 2;
* required string message = 3;
* }
* } */
static void encode_msgset_item(upb_encstate* e,
const upb_Message_Extension* ext) {
size_t size;
encode_tag(e, 1, kUpb_WireType_EndGroup);
encode_message(e, ext->data.ptr, ext->ext->sub.submsg, &size);
encode_varint(e, size);
encode_tag(e, 3, kUpb_WireType_Delimited);
encode_varint(e, ext->ext->field.number);
encode_tag(e, 2, kUpb_WireType_Varint);
encode_tag(e, 1, kUpb_WireType_StartGroup);
}
static void encode_message(upb_encstate* e, const upb_Message* msg,
const upb_MiniTable* m, size_t* size) {
size_t pre_len = e->limit - e->ptr;
if ((e->options & kUpb_Encode_CheckRequired) && m->required_count) {
uint64_t msg_head;
memcpy(&msg_head, msg, 8);
msg_head = _upb_BigEndian_Swap64(msg_head);
if (upb_MiniTable_requiredmask(m) & ~msg_head) {
encode_err(e);
}
}
if ((e->options & kUpb_Encode_SkipUnknown) == 0) {
size_t unknown_size;
const char* unknown = upb_Message_GetUnknown(msg, &unknown_size);
if (unknown) {
encode_bytes(e, unknown, unknown_size);
}
}
if (m->ext != kUpb_ExtMode_NonExtendable) {
/* Encode all extensions together. Unlike C++, we do not attempt to keep
* these in field number order relative to normal fields or even to each
* other. */
size_t ext_count;
const upb_Message_Extension* ext = _upb_Message_Getexts(msg, &ext_count);
if (ext_count) {
const upb_Message_Extension* end = ext + ext_count;
for (; ext != end; ext++) {
if (UPB_UNLIKELY(m->ext == kUpb_ExtMode_IsMessageSet)) {
encode_msgset_item(e, ext);
} else {
encode_field(e, &ext->data, &ext->ext->sub, &ext->ext->field);
}
}
}
}
if (m->field_count) {
const upb_MiniTable_Field* f = &m->fields[m->field_count];
const upb_MiniTable_Field* first = &m->fields[0];
while (f != first) {
f--;
if (encode_shouldencode(e, msg, m->subs, f)) {
encode_field(e, msg, m->subs, f);
}
}
}
*size = (e->limit - e->ptr) - pre_len;
}
char* upb_Encode(const void* msg, const upb_MiniTable* l, int options,
upb_Arena* arena, size_t* size) {
upb_encstate e;
unsigned depth = (unsigned)options >> 16;
e.alloc = upb_Arena_Alloc(arena);
e.buf = NULL;
e.limit = NULL;
e.ptr = NULL;
e.depth = depth ? depth : 64;
e.options = options;
_upb_mapsorter_init(&e.sorter);
char* ret = NULL;
if (UPB_SETJMP(e.err)) {
*size = 0;
ret = NULL;
} else {
encode_message(&e, msg, l, size);
*size = e.limit - e.ptr;
if (*size == 0) {
static char ch;
ret = &ch;
} else {
UPB_ASSERT(e.ptr);
ret = e.ptr;
}
}
_upb_mapsorter_destroy(&e.sorter);
return ret;
}
/** upb/msg.c ************************************************************/
/** upb_Message ***************************************************************/
static const size_t overhead = sizeof(upb_Message_InternalData);
static const upb_Message_Internal* upb_Message_Getinternal_const(
const upb_Message* msg) {
ptrdiff_t size = sizeof(upb_Message_Internal);
return (upb_Message_Internal*)((char*)msg - size);
}
upb_Message* _upb_Message_New(const upb_MiniTable* l, upb_Arena* a) {
return _upb_Message_New_inl(l, a);
}
void _upb_Message_Clear(upb_Message* msg, const upb_MiniTable* l) {
void* mem = UPB_PTR_AT(msg, -sizeof(upb_Message_Internal), char);
memset(mem, 0, upb_msg_sizeof(l));
}
static bool realloc_internal(upb_Message* msg, size_t need, upb_Arena* arena) {
upb_Message_Internal* in = upb_Message_Getinternal(msg);
if (!in->internal) {
/* No internal data, allocate from scratch. */
size_t size = UPB_MAX(128, _upb_Log2CeilingSize(need + overhead));
upb_Message_InternalData* internal = upb_Arena_Malloc(arena, size);
if (!internal) return false;
internal->size = size;
internal->unknown_end = overhead;
internal->ext_begin = size;
in->internal = internal;
} else if (in->internal->ext_begin - in->internal->unknown_end < need) {
/* Internal data is too small, reallocate. */
size_t new_size = _upb_Log2CeilingSize(in->internal->size + need);
size_t ext_bytes = in->internal->size - in->internal->ext_begin;
size_t new_ext_begin = new_size - ext_bytes;
upb_Message_InternalData* internal =
upb_Arena_Realloc(arena, in->internal, in->internal->size, new_size);
if (!internal) return false;
if (ext_bytes) {
/* Need to move extension data to the end. */
char* ptr = (char*)internal;
memmove(ptr + new_ext_begin, ptr + internal->ext_begin, ext_bytes);
}
internal->ext_begin = new_ext_begin;
internal->size = new_size;
in->internal = internal;
}
UPB_ASSERT(in->internal->ext_begin - in->internal->unknown_end >= need);
return true;
}
bool _upb_Message_AddUnknown(upb_Message* msg, const char* data, size_t len,
upb_Arena* arena) {
if (!realloc_internal(msg, len, arena)) return false;
upb_Message_Internal* in = upb_Message_Getinternal(msg);
memcpy(UPB_PTR_AT(in->internal, in->internal->unknown_end, char), data, len);
in->internal->unknown_end += len;
return true;
}
void _upb_Message_DiscardUnknown_shallow(upb_Message* msg) {
upb_Message_Internal* in = upb_Message_Getinternal(msg);
if (in->internal) {
in->internal->unknown_end = overhead;
}
}
const char* upb_Message_GetUnknown(const upb_Message* msg, size_t* len) {
const upb_Message_Internal* in = upb_Message_Getinternal_const(msg);
if (in->internal) {
*len = in->internal->unknown_end - overhead;
return (char*)(in->internal + 1);
} else {
*len = 0;
return NULL;
}
}
const upb_Message_Extension* _upb_Message_Getexts(const upb_Message* msg,
size_t* count) {
const upb_Message_Internal* in = upb_Message_Getinternal_const(msg);
if (in->internal) {
*count = (in->internal->size - in->internal->ext_begin) /
sizeof(upb_Message_Extension);
return UPB_PTR_AT(in->internal, in->internal->ext_begin, void);
} else {
*count = 0;
return NULL;
}
}
const upb_Message_Extension* _upb_Message_Getext(
const upb_Message* msg, const upb_MiniTable_Extension* e) {
size_t n;
const upb_Message_Extension* ext = _upb_Message_Getexts(msg, &n);
/* For now we use linear search exclusively to find extensions. If this
* becomes an issue due to messages with lots of extensions, we can introduce
* a table of some sort. */
for (size_t i = 0; i < n; i++) {
if (ext[i].ext == e) {
return &ext[i];
}
}
return NULL;
}
void _upb_Message_Clearext(upb_Message* msg,
const upb_MiniTable_Extension* ext_l) {
upb_Message_Internal* in = upb_Message_Getinternal(msg);
if (!in->internal) return;
const upb_Message_Extension* base =
UPB_PTR_AT(in->internal, in->internal->ext_begin, void);
upb_Message_Extension* ext =
(upb_Message_Extension*)_upb_Message_Getext(msg, ext_l);
if (ext) {
*ext = *base;
in->internal->ext_begin += sizeof(upb_Message_Extension);
}
}
upb_Message_Extension* _upb_Message_GetOrCreateExtension(
upb_Message* msg, const upb_MiniTable_Extension* e, upb_Arena* arena) {
upb_Message_Extension* ext =
(upb_Message_Extension*)_upb_Message_Getext(msg, e);
if (ext) return ext;
if (!realloc_internal(msg, sizeof(upb_Message_Extension), arena)) return NULL;
upb_Message_Internal* in = upb_Message_Getinternal(msg);
in->internal->ext_begin -= sizeof(upb_Message_Extension);
ext = UPB_PTR_AT(in->internal, in->internal->ext_begin, void);
memset(ext, 0, sizeof(upb_Message_Extension));
ext->ext = e;
return ext;
}
size_t upb_Message_ExtensionCount(const upb_Message* msg) {
size_t count;
_upb_Message_Getexts(msg, &count);
return count;
}
/** upb_Array *****************************************************************/
bool _upb_array_realloc(upb_Array* arr, size_t min_size, upb_Arena* arena) {
size_t new_size = UPB_MAX(arr->size, 4);
int elem_size_lg2 = arr->data & 7;
size_t old_bytes = arr->size << elem_size_lg2;
size_t new_bytes;
void* ptr = _upb_array_ptr(arr);
/* Log2 ceiling of size. */
while (new_size < min_size) new_size *= 2;
new_bytes = new_size << elem_size_lg2;
ptr = upb_Arena_Realloc(arena, ptr, old_bytes, new_bytes);
if (!ptr) {
return false;
}
arr->data = _upb_tag_arrptr(ptr, elem_size_lg2);
arr->size = new_size;
return true;
}
static upb_Array* getorcreate_array(upb_Array** arr_ptr, int elem_size_lg2,
upb_Arena* arena) {
upb_Array* arr = *arr_ptr;
if (!arr) {
arr = _upb_Array_New(arena, 4, elem_size_lg2);
if (!arr) return NULL;
*arr_ptr = arr;
}
return arr;
}
void* _upb_Array_Resize_fallback(upb_Array** arr_ptr, size_t size,
int elem_size_lg2, upb_Arena* arena) {
upb_Array* arr = getorcreate_array(arr_ptr, elem_size_lg2, arena);
return arr && _upb_Array_Resize(arr, size, arena) ? _upb_array_ptr(arr)
: NULL;
}
bool _upb_Array_Append_fallback(upb_Array** arr_ptr, const void* value,
int elem_size_lg2, upb_Arena* arena) {
upb_Array* arr = getorcreate_array(arr_ptr, elem_size_lg2, arena);
if (!arr) return false;
size_t elems = arr->len;
if (!_upb_Array_Resize(arr, elems + 1, arena)) {
return false;
}
char* data = _upb_array_ptr(arr);
memcpy(data + (elems << elem_size_lg2), value, 1 << elem_size_lg2);
return true;
}
/** upb_Map *******************************************************************/
upb_Map* _upb_Map_New(upb_Arena* a, size_t key_size, size_t value_size) {
upb_Map* map = upb_Arena_Malloc(a, sizeof(upb_Map));
if (!map) {
return NULL;
}
upb_strtable_init(&map->table, 4, a);
map->key_size = key_size;
map->val_size = value_size;
return map;
}
static void _upb_mapsorter_getkeys(const void* _a, const void* _b, void* a_key,
void* b_key, size_t size) {
const upb_tabent* const* a = _a;
const upb_tabent* const* b = _b;
upb_StringView a_tabkey = upb_tabstrview((*a)->key);
upb_StringView b_tabkey = upb_tabstrview((*b)->key);
_upb_map_fromkey(a_tabkey, a_key, size);
_upb_map_fromkey(b_tabkey, b_key, size);
}
#define UPB_COMPARE_INTEGERS(a, b) ((a) < (b) ? -1 : ((a) == (b) ? 0 : 1))
static int _upb_mapsorter_cmpi64(const void* _a, const void* _b) {
int64_t a, b;
_upb_mapsorter_getkeys(_a, _b, &a, &b, 8);
return UPB_COMPARE_INTEGERS(a, b);
}
static int _upb_mapsorter_cmpu64(const void* _a, const void* _b) {
uint64_t a, b;
_upb_mapsorter_getkeys(_a, _b, &a, &b, 8);
return UPB_COMPARE_INTEGERS(a, b);
}
static int _upb_mapsorter_cmpi32(const void* _a, const void* _b) {
int32_t a, b;
_upb_mapsorter_getkeys(_a, _b, &a, &b, 4);
return UPB_COMPARE_INTEGERS(a, b);
}
static int _upb_mapsorter_cmpu32(const void* _a, const void* _b) {
uint32_t a, b;
_upb_mapsorter_getkeys(_a, _b, &a, &b, 4);
return UPB_COMPARE_INTEGERS(a, b);
}
static int _upb_mapsorter_cmpbool(const void* _a, const void* _b) {
bool a, b;
_upb_mapsorter_getkeys(_a, _b, &a, &b, 1);
return UPB_COMPARE_INTEGERS(a, b);
}
static int _upb_mapsorter_cmpstr(const void* _a, const void* _b) {
upb_StringView a, b;
_upb_mapsorter_getkeys(_a, _b, &a, &b, UPB_MAPTYPE_STRING);
size_t common_size = UPB_MIN(a.size, b.size);
int cmp = memcmp(a.data, b.data, common_size);
if (cmp) return -cmp;
return UPB_COMPARE_INTEGERS(a.size, b.size);
}
#undef UPB_COMPARE_INTEGERS
bool _upb_mapsorter_pushmap(_upb_mapsorter* s, upb_FieldType key_type,
const upb_Map* map, _upb_sortedmap* sorted) {
int map_size = _upb_Map_Size(map);
sorted->start = s->size;
sorted->pos = sorted->start;
sorted->end = sorted->start + map_size;
/* Grow s->entries if necessary. */
if (sorted->end > s->cap) {
s->cap = _upb_Log2CeilingSize(sorted->end);
s->entries = realloc(s->entries, s->cap * sizeof(*s->entries));
if (!s->entries) return false;
}
s->size = sorted->end;
/* Copy non-empty entries from the table to s->entries. */
upb_tabent const** dst = &s->entries[sorted->start];
const upb_tabent* src = map->table.t.entries;
const upb_tabent* end = src + upb_table_size(&map->table.t);
for (; src < end; src++) {
if (!upb_tabent_isempty(src)) {
*dst = src;
dst++;
}
}
UPB_ASSERT(dst == &s->entries[sorted->end]);
/* Sort entries according to the key type. */
int (*compar)(const void*, const void*);
switch (key_type) {
case kUpb_FieldType_Int64:
case kUpb_FieldType_SFixed64:
case kUpb_FieldType_SInt64:
compar = _upb_mapsorter_cmpi64;
break;
case kUpb_FieldType_UInt64:
case kUpb_FieldType_Fixed64:
compar = _upb_mapsorter_cmpu64;
break;
case kUpb_FieldType_Int32:
case kUpb_FieldType_SInt32:
case kUpb_FieldType_SFixed32:
case kUpb_FieldType_Enum:
compar = _upb_mapsorter_cmpi32;
break;
case kUpb_FieldType_UInt32:
case kUpb_FieldType_Fixed32:
compar = _upb_mapsorter_cmpu32;
break;
case kUpb_FieldType_Bool:
compar = _upb_mapsorter_cmpbool;
break;
case kUpb_FieldType_String:
case kUpb_FieldType_Bytes:
compar = _upb_mapsorter_cmpstr;
break;
default:
UPB_UNREACHABLE();
}
qsort(&s->entries[sorted->start], map_size, sizeof(*s->entries), compar);
return true;
}
/** upb_ExtensionRegistry *****************************************************/
struct upb_ExtensionRegistry {
upb_Arena* arena;
upb_strtable exts; /* Key is upb_MiniTable* concatenated with fieldnum. */
};
#define EXTREG_KEY_SIZE (sizeof(upb_MiniTable*) + sizeof(uint32_t))
static void extreg_key(char* buf, const upb_MiniTable* l, uint32_t fieldnum) {
memcpy(buf, &l, sizeof(l));
memcpy(buf + sizeof(l), &fieldnum, sizeof(fieldnum));
}
upb_ExtensionRegistry* upb_ExtensionRegistry_New(upb_Arena* arena) {
upb_ExtensionRegistry* r = upb_Arena_Malloc(arena, sizeof(*r));
if (!r) return NULL;
r->arena = arena;
if (!upb_strtable_init(&r->exts, 8, arena)) return NULL;
return r;
}
bool _upb_extreg_add(upb_ExtensionRegistry* r,
const upb_MiniTable_Extension** e, size_t count) {
char buf[EXTREG_KEY_SIZE];
const upb_MiniTable_Extension** start = e;
const upb_MiniTable_Extension** end = UPB_PTRADD(e, count);
for (; e < end; e++) {
const upb_MiniTable_Extension* ext = *e;
extreg_key(buf, ext->extendee, ext->field.number);
upb_value v;
if (upb_strtable_lookup2(&r->exts, buf, EXTREG_KEY_SIZE, &v)) {
goto failure;
}
if (!upb_strtable_insert(&r->exts, buf, EXTREG_KEY_SIZE,
upb_value_constptr(ext), r->arena)) {
goto failure;
}
}
return true;
failure:
/* Back out the entries previously added. */
for (end = e, e = start; e < end; e++) {
const upb_MiniTable_Extension* ext = *e;
extreg_key(buf, ext->extendee, ext->field.number);
upb_strtable_remove2(&r->exts, buf, EXTREG_KEY_SIZE, NULL);
}
return false;
}
const upb_MiniTable_Extension* _upb_extreg_get(const upb_ExtensionRegistry* r,
const upb_MiniTable* l,
uint32_t num) {
char buf[EXTREG_KEY_SIZE];
upb_value v;
extreg_key(buf, l, num);
if (upb_strtable_lookup2(&r->exts, buf, EXTREG_KEY_SIZE, &v)) {
return upb_value_getconstptr(v);
} else {
return NULL;
}
}
/** upb/table.c ************************************************************/
/*
* upb_table Implementation
*
* Implementation is heavily inspired by Lua's ltable.c.
*/
#include <string.h>
/* Must be last. */
#define UPB_MAXARRSIZE 16 /* 64k. */
/* From Chromium. */
#define ARRAY_SIZE(x) \
((sizeof(x) / sizeof(0 [x])) / ((size_t)(!(sizeof(x) % sizeof(0 [x])))))
static const double MAX_LOAD = 0.85;
/* The minimum utilization of the array part of a mixed hash/array table. This
* is a speed/memory-usage tradeoff (though it's not straightforward because of
* cache effects). The lower this is, the more memory we'll use. */
static const double MIN_DENSITY = 0.1;
static bool is_pow2(uint64_t v) { return v == 0 || (v & (v - 1)) == 0; }
static upb_value _upb_value_val(uint64_t val) {
upb_value ret;
_upb_value_setval(&ret, val);
return ret;
}
static int log2ceil(uint64_t v) {
int ret = 0;
bool pow2 = is_pow2(v);
while (v >>= 1) ret++;
ret = pow2 ? ret : ret + 1; /* Ceiling. */
return UPB_MIN(UPB_MAXARRSIZE, ret);
}
char* upb_strdup2(const char* s, size_t len, upb_Arena* a) {
size_t n;
char* p;
/* Prevent overflow errors. */
if (len == SIZE_MAX) return NULL;
/* Always null-terminate, even if binary data; but don't rely on the input to
* have a null-terminating byte since it may be a raw binary buffer. */
n = len + 1;
p = upb_Arena_Malloc(a, n);
if (p) {
memcpy(p, s, len);
p[len] = 0;
}
return p;
}
/* A type to represent the lookup key of either a strtable or an inttable. */
typedef union {
uintptr_t num;
struct {
const char* str;
size_t len;
} str;
} lookupkey_t;
static lookupkey_t strkey2(const char* str, size_t len) {
lookupkey_t k;
k.str.str = str;
k.str.len = len;
return k;
}
static lookupkey_t intkey(uintptr_t key) {
lookupkey_t k;
k.num = key;
return k;
}
typedef uint32_t hashfunc_t(upb_tabkey key);
typedef bool eqlfunc_t(upb_tabkey k1, lookupkey_t k2);
/* Base table (shared code) ***************************************************/
static uint32_t upb_inthash(uintptr_t key) { return (uint32_t)key; }
static const upb_tabent* upb_getentry(const upb_table* t, uint32_t hash) {
return t->entries + (hash & t->mask);
}
static bool upb_arrhas(upb_tabval key) { return key.val != (uint64_t)-1; }
static bool isfull(upb_table* t) { return t->count == t->max_count; }
static bool init(upb_table* t, uint8_t size_lg2, upb_Arena* a) {
size_t bytes;
t->count = 0;
t->size_lg2 = size_lg2;
t->mask = upb_table_size(t) ? upb_table_size(t) - 1 : 0;
t->max_count = upb_table_size(t) * MAX_LOAD;
bytes = upb_table_size(t) * sizeof(upb_tabent);
if (bytes > 0) {
t->entries = upb_Arena_Malloc(a, bytes);
if (!t->entries) return false;
memset(t->entries, 0, bytes);
} else {
t->entries = NULL;
}
return true;
}
static upb_tabent* emptyent(upb_table* t, upb_tabent* e) {
upb_tabent* begin = t->entries;
upb_tabent* end = begin + upb_table_size(t);
for (e = e + 1; e < end; e++) {
if (upb_tabent_isempty(e)) return e;
}
for (e = begin; e < end; e++) {
if (upb_tabent_isempty(e)) return e;
}
UPB_ASSERT(false);
return NULL;
}
static upb_tabent* getentry_mutable(upb_table* t, uint32_t hash) {
return (upb_tabent*)upb_getentry(t, hash);
}
static const upb_tabent* findentry(const upb_table* t, lookupkey_t key,
uint32_t hash, eqlfunc_t* eql) {
const upb_tabent* e;
if (t->size_lg2 == 0) return NULL;
e = upb_getentry(t, hash);
if (upb_tabent_isempty(e)) return NULL;
while (1) {
if (eql(e->key, key)) return e;
if ((e = e->next) == NULL) return NULL;
}
}
static upb_tabent* findentry_mutable(upb_table* t, lookupkey_t key,
uint32_t hash, eqlfunc_t* eql) {
return (upb_tabent*)findentry(t, key, hash, eql);
}
static bool lookup(const upb_table* t, lookupkey_t key, upb_value* v,
uint32_t hash, eqlfunc_t* eql) {
const upb_tabent* e = findentry(t, key, hash, eql);
if (e) {
if (v) {
_upb_value_setval(v, e->val.val);
}
return true;
} else {
return false;
}
}
/* The given key must not already exist in the table. */
static void insert(upb_table* t, lookupkey_t key, upb_tabkey tabkey,
upb_value val, uint32_t hash, hashfunc_t* hashfunc,
eqlfunc_t* eql) {
upb_tabent* mainpos_e;
upb_tabent* our_e;
UPB_ASSERT(findentry(t, key, hash, eql) == NULL);
t->count++;
mainpos_e = getentry_mutable(t, hash);
our_e = mainpos_e;
if (upb_tabent_isempty(mainpos_e)) {
/* Our main position is empty; use it. */
our_e->next = NULL;
} else {
/* Collision. */
upb_tabent* new_e = emptyent(t, mainpos_e);
/* Head of collider's chain. */
upb_tabent* chain = getentry_mutable(t, hashfunc(mainpos_e->key));
if (chain == mainpos_e) {
/* Existing ent is in its main position (it has the same hash as us, and
* is the head of our chain). Insert to new ent and append to this chain.
*/
new_e->next = mainpos_e->next;
mainpos_e->next = new_e;
our_e = new_e;
} else {
/* Existing ent is not in its main position (it is a node in some other
* chain). This implies that no existing ent in the table has our hash.
* Evict it (updating its chain) and use its ent for head of our chain. */
*new_e = *mainpos_e; /* copies next. */
while (chain->next != mainpos_e) {
chain = (upb_tabent*)chain->next;
UPB_ASSERT(chain);
}
chain->next = new_e;
our_e = mainpos_e;
our_e->next = NULL;
}
}
our_e->key = tabkey;
our_e->val.val = val.val;
UPB_ASSERT(findentry(t, key, hash, eql) == our_e);
}
static bool rm(upb_table* t, lookupkey_t key, upb_value* val,
upb_tabkey* removed, uint32_t hash, eqlfunc_t* eql) {
upb_tabent* chain = getentry_mutable(t, hash);
if (upb_tabent_isempty(chain)) return false;
if (eql(chain->key, key)) {
/* Element to remove is at the head of its chain. */
t->count--;
if (val) _upb_value_setval(val, chain->val.val);
if (removed) *removed = chain->key;
if (chain->next) {
upb_tabent* move = (upb_tabent*)chain->next;
*chain = *move;
move->key = 0; /* Make the slot empty. */
} else {
chain->key = 0; /* Make the slot empty. */
}
return true;
} else {
/* Element to remove is either in a non-head position or not in the
* table. */
while (chain->next && !eql(chain->next->key, key)) {
chain = (upb_tabent*)chain->next;
}
if (chain->next) {
/* Found element to remove. */
upb_tabent* rm = (upb_tabent*)chain->next;
t->count--;
if (val) _upb_value_setval(val, chain->next->val.val);
if (removed) *removed = rm->key;
rm->key = 0; /* Make the slot empty. */
chain->next = rm->next;
return true;
} else {
/* Element to remove is not in the table. */
return false;
}
}
}
static size_t next(const upb_table* t, size_t i) {
do {
if (++i >= upb_table_size(t)) return SIZE_MAX - 1; /* Distinct from -1. */
} while (upb_tabent_isempty(&t->entries[i]));
return i;
}
static size_t begin(const upb_table* t) { return next(t, -1); }
/* upb_strtable ***************************************************************/
/* A simple "subclass" of upb_table that only adds a hash function for strings.
*/
static upb_tabkey strcopy(lookupkey_t k2, upb_Arena* a) {
uint32_t len = (uint32_t)k2.str.len;
char* str = upb_Arena_Malloc(a, k2.str.len + sizeof(uint32_t) + 1);
if (str == NULL) return 0;
memcpy(str, &len, sizeof(uint32_t));
if (k2.str.len) memcpy(str + sizeof(uint32_t), k2.str.str, k2.str.len);
str[sizeof(uint32_t) + k2.str.len] = '\0';
return (uintptr_t)str;
}
/* Adapted from ABSL's wyhash. */
static uint64_t UnalignedLoad64(const void* p) {
uint64_t val;
memcpy(&val, p, 8);
return val;
}
static uint32_t UnalignedLoad32(const void* p) {
uint32_t val;
memcpy(&val, p, 4);
return val;
}
#if defined(_MSC_VER) && defined(_M_X64)
#include <intrin.h>
#endif
/* Computes a * b, returning the low 64 bits of the result and storing the high
* 64 bits in |*high|. */
static uint64_t upb_umul128(uint64_t v0, uint64_t v1, uint64_t* out_high) {
#ifdef __SIZEOF_INT128__
__uint128_t p = v0;
p *= v1;
*out_high = (uint64_t)(p >> 64);
return (uint64_t)p;
#elif defined(_MSC_VER) && defined(_M_X64)
return _umul128(v0, v1, out_high);
#else
uint64_t a32 = v0 >> 32;
uint64_t a00 = v0 & 0xffffffff;
uint64_t b32 = v1 >> 32;
uint64_t b00 = v1 & 0xffffffff;
uint64_t high = a32 * b32;
uint64_t low = a00 * b00;
uint64_t mid1 = a32 * b00;
uint64_t mid2 = a00 * b32;
low += (mid1 << 32) + (mid2 << 32);
// Omit carry bit, for mixing we do not care about exact numerical precision.
high += (mid1 >> 32) + (mid2 >> 32);
*out_high = high;
return low;
#endif
}
static uint64_t WyhashMix(uint64_t v0, uint64_t v1) {
uint64_t high;
uint64_t low = upb_umul128(v0, v1, &high);
return low ^ high;
}
static uint64_t Wyhash(const void* data, size_t len, uint64_t seed,
const uint64_t salt[]) {
const uint8_t* ptr = (const uint8_t*)data;
uint64_t starting_length = (uint64_t)len;
uint64_t current_state = seed ^ salt[0];
if (len > 64) {
// If we have more than 64 bytes, we're going to handle chunks of 64
// bytes at a time. We're going to build up two separate hash states
// which we will then hash together.
uint64_t duplicated_state = current_state;
do {
uint64_t a = UnalignedLoad64(ptr);
uint64_t b = UnalignedLoad64(ptr + 8);
uint64_t c = UnalignedLoad64(ptr + 16);
uint64_t d = UnalignedLoad64(ptr + 24);
uint64_t e = UnalignedLoad64(ptr + 32);
uint64_t f = UnalignedLoad64(ptr + 40);
uint64_t g = UnalignedLoad64(ptr + 48);
uint64_t h = UnalignedLoad64(ptr + 56);
uint64_t cs0 = WyhashMix(a ^ salt[1], b ^ current_state);
uint64_t cs1 = WyhashMix(c ^ salt[2], d ^ current_state);
current_state = (cs0 ^ cs1);
uint64_t ds0 = WyhashMix(e ^ salt[3], f ^ duplicated_state);
uint64_t ds1 = WyhashMix(g ^ salt[4], h ^ duplicated_state);
duplicated_state = (ds0 ^ ds1);
ptr += 64;
len -= 64;
} while (len > 64);
current_state = current_state ^ duplicated_state;
}
// We now have a data `ptr` with at most 64 bytes and the current state
// of the hashing state machine stored in current_state.
while (len > 16) {
uint64_t a = UnalignedLoad64(ptr);
uint64_t b = UnalignedLoad64(ptr + 8);
current_state = WyhashMix(a ^ salt[1], b ^ current_state);
ptr += 16;
len -= 16;
}
// We now have a data `ptr` with at most 16 bytes.
uint64_t a = 0;
uint64_t b = 0;
if (len > 8) {
// When we have at least 9 and at most 16 bytes, set A to the first 64
// bits of the input and B to the last 64 bits of the input. Yes, they will
// overlap in the middle if we are working with less than the full 16
// bytes.
a = UnalignedLoad64(ptr);
b = UnalignedLoad64(ptr + len - 8);
} else if (len > 3) {
// If we have at least 4 and at most 8 bytes, set A to the first 32
// bits and B to the last 32 bits.
a = UnalignedLoad32(ptr);
b = UnalignedLoad32(ptr + len - 4);
} else if (len > 0) {
// If we have at least 1 and at most 3 bytes, read all of the provided
// bits into A, with some adjustments.
a = ((ptr[0] << 16) | (ptr[len >> 1] << 8) | ptr[len - 1]);
b = 0;
} else {
a = 0;
b = 0;
}
uint64_t w = WyhashMix(a ^ salt[1], b ^ current_state);
uint64_t z = salt[1] ^ starting_length;
return WyhashMix(w, z);
}
const uint64_t kWyhashSalt[5] = {
0x243F6A8885A308D3ULL, 0x13198A2E03707344ULL, 0xA4093822299F31D0ULL,
0x082EFA98EC4E6C89ULL, 0x452821E638D01377ULL,
};
uint32_t _upb_Hash(const void* p, size_t n, uint64_t seed) {
return Wyhash(p, n, seed, kWyhashSalt);
}
static uint32_t _upb_Hash_NoSeed(const char* p, size_t n) {
return _upb_Hash(p, n, 0);
}
static uint32_t strhash(upb_tabkey key) {
uint32_t len;
char* str = upb_tabstr(key, &len);
return _upb_Hash_NoSeed(str, len);
}
static bool streql(upb_tabkey k1, lookupkey_t k2) {
uint32_t len;
char* str = upb_tabstr(k1, &len);
return len == k2.str.len && (len == 0 || memcmp(str, k2.str.str, len) == 0);
}
bool upb_strtable_init(upb_strtable* t, size_t expected_size, upb_Arena* a) {
// Multiply by approximate reciprocal of MAX_LOAD (0.85), with pow2
// denominator.
size_t need_entries = (expected_size + 1) * 1204 / 1024;
UPB_ASSERT(need_entries >= expected_size * 0.85);
int size_lg2 = _upb_Log2Ceiling(need_entries);
return init(&t->t, size_lg2, a);
}
void upb_strtable_clear(upb_strtable* t) {
size_t bytes = upb_table_size(&t->t) * sizeof(upb_tabent);
t->t.count = 0;
memset((char*)t->t.entries, 0, bytes);
}
bool upb_strtable_resize(upb_strtable* t, size_t size_lg2, upb_Arena* a) {
upb_strtable new_table;
upb_strtable_iter i;
if (!init(&new_table.t, size_lg2, a)) return false;
upb_strtable_begin(&i, t);
for (; !upb_strtable_done(&i); upb_strtable_next(&i)) {
upb_StringView key = upb_strtable_iter_key(&i);
upb_strtable_insert(&new_table, key.data, key.size,
upb_strtable_iter_value(&i), a);
}
*t = new_table;
return true;
}
bool upb_strtable_insert(upb_strtable* t, const char* k, size_t len,
upb_value v, upb_Arena* a) {
lookupkey_t key;
upb_tabkey tabkey;
uint32_t hash;
if (isfull(&t->t)) {
/* Need to resize. New table of double the size, add old elements to it. */
if (!upb_strtable_resize(t, t->t.size_lg2 + 1, a)) {
return false;
}
}
key = strkey2(k, len);
tabkey = strcopy(key, a);
if (tabkey == 0) return false;
hash = _upb_Hash_NoSeed(key.str.str, key.str.len);
insert(&t->t, key, tabkey, v, hash, &strhash, &streql);
return true;
}
bool upb_strtable_lookup2(const upb_strtable* t, const char* key, size_t len,
upb_value* v) {
uint32_t hash = _upb_Hash_NoSeed(key, len);
return lookup(&t->t, strkey2(key, len), v, hash, &streql);
}
bool upb_strtable_remove2(upb_strtable* t, const char* key, size_t len,
upb_value* val) {
uint32_t hash = _upb_Hash_NoSeed(key, len);
upb_tabkey tabkey;
return rm(&t->t, strkey2(key, len), val, &tabkey, hash, &streql);
}
/* Iteration */
void upb_strtable_begin(upb_strtable_iter* i, const upb_strtable* t) {
i->t = t;
i->index = begin(&t->t);
}
void upb_strtable_next(upb_strtable_iter* i) {
i->index = next(&i->t->t, i->index);
}
bool upb_strtable_done(const upb_strtable_iter* i) {
if (!i->t) return true;
return i->index >= upb_table_size(&i->t->t) ||
upb_tabent_isempty(str_tabent(i));
}
upb_StringView upb_strtable_iter_key(const upb_strtable_iter* i) {
upb_StringView key;
uint32_t len;
UPB_ASSERT(!upb_strtable_done(i));
key.data = upb_tabstr(str_tabent(i)->key, &len);
key.size = len;
return key;
}
upb_value upb_strtable_iter_value(const upb_strtable_iter* i) {
UPB_ASSERT(!upb_strtable_done(i));
return _upb_value_val(str_tabent(i)->val.val);
}
void upb_strtable_iter_setdone(upb_strtable_iter* i) {
i->t = NULL;
i->index = SIZE_MAX;
}
bool upb_strtable_iter_isequal(const upb_strtable_iter* i1,
const upb_strtable_iter* i2) {
if (upb_strtable_done(i1) && upb_strtable_done(i2)) return true;
return i1->t == i2->t && i1->index == i2->index;
}
/* upb_inttable ***************************************************************/
/* For inttables we use a hybrid structure where small keys are kept in an
* array and large keys are put in the hash table. */
static uint32_t inthash(upb_tabkey key) { return upb_inthash(key); }
static bool inteql(upb_tabkey k1, lookupkey_t k2) { return k1 == k2.num; }
static upb_tabval* mutable_array(upb_inttable* t) {
return (upb_tabval*)t->array;
}
static upb_tabval* inttable_val(upb_inttable* t, uintptr_t key) {
if (key < t->array_size) {
return upb_arrhas(t->array[key]) ? &(mutable_array(t)[key]) : NULL;
} else {
upb_tabent* e =
findentry_mutable(&t->t, intkey(key), upb_inthash(key), &inteql);
return e ? &e->val : NULL;
}
}
static const upb_tabval* inttable_val_const(const upb_inttable* t,
uintptr_t key) {
return inttable_val((upb_inttable*)t, key);
}
size_t upb_inttable_count(const upb_inttable* t) {
return t->t.count + t->array_count;
}
static void check(upb_inttable* t) {
UPB_UNUSED(t);
#if defined(UPB_DEBUG_TABLE) && !defined(NDEBUG)
{
/* This check is very expensive (makes inserts/deletes O(N)). */
size_t count = 0;
upb_inttable_iter i;
upb_inttable_begin(&i, t);
for (; !upb_inttable_done(&i); upb_inttable_next(&i), count++) {
UPB_ASSERT(upb_inttable_lookup(t, upb_inttable_iter_key(&i), NULL));
}
UPB_ASSERT(count == upb_inttable_count(t));
}
#endif
}
bool upb_inttable_sizedinit(upb_inttable* t, size_t asize, int hsize_lg2,
upb_Arena* a) {
size_t array_bytes;
if (!init(&t->t, hsize_lg2, a)) return false;
/* Always make the array part at least 1 long, so that we know key 0
* won't be in the hash part, which simplifies things. */
t->array_size = UPB_MAX(1, asize);
t->array_count = 0;
array_bytes = t->array_size * sizeof(upb_value);
t->array = upb_Arena_Malloc(a, array_bytes);
if (!t->array) {
return false;
}
memset(mutable_array(t), 0xff, array_bytes);
check(t);
return true;
}
bool upb_inttable_init(upb_inttable* t, upb_Arena* a) {
return upb_inttable_sizedinit(t, 0, 4, a);
}
bool upb_inttable_insert(upb_inttable* t, uintptr_t key, upb_value val,
upb_Arena* a) {
upb_tabval tabval;
tabval.val = val.val;
UPB_ASSERT(
upb_arrhas(tabval)); /* This will reject (uint64_t)-1. Fix this. */
if (key < t->array_size) {
UPB_ASSERT(!upb_arrhas(t->array[key]));
t->array_count++;
mutable_array(t)[key].val = val.val;
} else {
if (isfull(&t->t)) {
/* Need to resize the hash part, but we re-use the array part. */
size_t i;
upb_table new_table;
if (!init(&new_table, t->t.size_lg2 + 1, a)) {
return false;
}
for (i = begin(&t->t); i < upb_table_size(&t->t); i = next(&t->t, i)) {
const upb_tabent* e = &t->t.entries[i];
uint32_t hash;
upb_value v;
_upb_value_setval(&v, e->val.val);
hash = upb_inthash(e->key);
insert(&new_table, intkey(e->key), e->key, v, hash, &inthash, &inteql);
}
UPB_ASSERT(t->t.count == new_table.count);
t->t = new_table;
}
insert(&t->t, intkey(key), key, val, upb_inthash(key), &inthash, &inteql);
}
check(t);
return true;
}
bool upb_inttable_lookup(const upb_inttable* t, uintptr_t key, upb_value* v) {
const upb_tabval* table_v = inttable_val_const(t, key);
if (!table_v) return false;
if (v) _upb_value_setval(v, table_v->val);
return true;
}
bool upb_inttable_replace(upb_inttable* t, uintptr_t key, upb_value val) {
upb_tabval* table_v = inttable_val(t, key);
if (!table_v) return false;
table_v->val = val.val;
return true;
}
bool upb_inttable_remove(upb_inttable* t, uintptr_t key, upb_value* val) {
bool success;
if (key < t->array_size) {
if (upb_arrhas(t->array[key])) {
upb_tabval empty = UPB_TABVALUE_EMPTY_INIT;
t->array_count--;
if (val) {
_upb_value_setval(val, t->array[key].val);
}
mutable_array(t)[key] = empty;
success = true;
} else {
success = false;
}
} else {
success = rm(&t->t, intkey(key), val, NULL, upb_inthash(key), &inteql);
}
check(t);
return success;
}
void upb_inttable_compact(upb_inttable* t, upb_Arena* a) {
/* A power-of-two histogram of the table keys. */
size_t counts[UPB_MAXARRSIZE + 1] = {0};
/* The max key in each bucket. */
uintptr_t max[UPB_MAXARRSIZE + 1] = {0};
upb_inttable_iter i;
size_t arr_count;
int size_lg2;
upb_inttable new_t;
upb_inttable_begin(&i, t);
for (; !upb_inttable_done(&i); upb_inttable_next(&i)) {
uintptr_t key = upb_inttable_iter_key(&i);
int bucket = log2ceil(key);
max[bucket] = UPB_MAX(max[bucket], key);
counts[bucket]++;
}
/* Find the largest power of two that satisfies the MIN_DENSITY
* definition (while actually having some keys). */
arr_count = upb_inttable_count(t);
for (size_lg2 = ARRAY_SIZE(counts) - 1; size_lg2 > 0; size_lg2--) {
if (counts[size_lg2] == 0) {
/* We can halve again without losing any entries. */
continue;
} else if (arr_count >= (1 << size_lg2) * MIN_DENSITY) {
break;
}
arr_count -= counts[size_lg2];
}
UPB_ASSERT(arr_count <= upb_inttable_count(t));
{
/* Insert all elements into new, perfectly-sized table. */
size_t arr_size = max[size_lg2] + 1; /* +1 so arr[max] will fit. */
size_t hash_count = upb_inttable_count(t) - arr_count;
size_t hash_size = hash_count ? (hash_count / MAX_LOAD) + 1 : 0;
int hashsize_lg2 = log2ceil(hash_size);
upb_inttable_sizedinit(&new_t, arr_size, hashsize_lg2, a);
upb_inttable_begin(&i, t);
for (; !upb_inttable_done(&i); upb_inttable_next(&i)) {
uintptr_t k = upb_inttable_iter_key(&i);
upb_inttable_insert(&new_t, k, upb_inttable_iter_value(&i), a);
}
UPB_ASSERT(new_t.array_size == arr_size);
UPB_ASSERT(new_t.t.size_lg2 == hashsize_lg2);
}
*t = new_t;
}
/* Iteration. */
static const upb_tabent* int_tabent(const upb_inttable_iter* i) {
UPB_ASSERT(!i->array_part);
return &i->t->t.entries[i->index];
}
static upb_tabval int_arrent(const upb_inttable_iter* i) {
UPB_ASSERT(i->array_part);
return i->t->array[i->index];
}
void upb_inttable_begin(upb_inttable_iter* i, const upb_inttable* t) {
i->t = t;
i->index = -1;
i->array_part = true;
upb_inttable_next(i);
}
void upb_inttable_next(upb_inttable_iter* iter) {
const upb_inttable* t = iter->t;
if (iter->array_part) {
while (++iter->index < t->array_size) {
if (upb_arrhas(int_arrent(iter))) {
return;
}
}
iter->array_part = false;
iter->index = begin(&t->t);
} else {
iter->index = next(&t->t, iter->index);
}
}
bool upb_inttable_next2(const upb_inttable* t, uintptr_t* key, upb_value* val,
intptr_t* iter) {
intptr_t i = *iter;
if (i < t->array_size) {
while (++i < t->array_size) {
upb_tabval ent = t->array[i];
if (upb_arrhas(ent)) {
*key = i;
*val = _upb_value_val(ent.val);
*iter = i;
return true;
}
}
}
size_t tab_idx = next(&t->t, i == -1 ? -1 : i - t->array_size);
if (tab_idx < upb_table_size(&t->t)) {
upb_tabent* ent = &t->t.entries[tab_idx];
*key = ent->key;
*val = _upb_value_val(ent->val.val);
*iter = tab_idx + t->array_size;
return true;
}
return false;
}
void upb_inttable_removeiter(upb_inttable* t, intptr_t* iter) {
intptr_t i = *iter;
if (i < t->array_size) {
t->array_count--;
mutable_array(t)[i].val = -1;
} else {
upb_tabent* ent = &t->t.entries[i - t->array_size];
upb_tabent* prev = NULL;
// Linear search, not great.
upb_tabent* end = &t->t.entries[upb_table_size(&t->t)];
for (upb_tabent* e = t->t.entries; e != end; e++) {
if (e->next == ent) {
prev = e;
break;
}
}
if (prev) {
prev->next = ent->next;
}
t->t.count--;
ent->key = 0;
ent->next = NULL;
}
}
bool upb_strtable_next2(const upb_strtable* t, upb_StringView* key,
upb_value* val, intptr_t* iter) {
size_t tab_idx = next(&t->t, *iter);
if (tab_idx < upb_table_size(&t->t)) {
upb_tabent* ent = &t->t.entries[tab_idx];
uint32_t len;
key->data = upb_tabstr(ent->key, &len);
key->size = len;
*val = _upb_value_val(ent->val.val);
*iter = tab_idx;
return true;
}
return false;
}
void upb_strtable_removeiter(upb_strtable* t, intptr_t* iter) {
intptr_t i = *iter;
upb_tabent* ent = &t->t.entries[i];
upb_tabent* prev = NULL;
// Linear search, not great.
upb_tabent* end = &t->t.entries[upb_table_size(&t->t)];
for (upb_tabent* e = t->t.entries; e != end; e++) {
if (e->next == ent) {
prev = e;
break;
}
}
if (prev) {
prev->next = ent->next;
}
t->t.count--;
ent->key = 0;
ent->next = NULL;
}
bool upb_inttable_done(const upb_inttable_iter* i) {
if (!i->t) return true;
if (i->array_part) {
return i->index >= i->t->array_size || !upb_arrhas(int_arrent(i));
} else {
return i->index >= upb_table_size(&i->t->t) ||
upb_tabent_isempty(int_tabent(i));
}
}
uintptr_t upb_inttable_iter_key(const upb_inttable_iter* i) {
UPB_ASSERT(!upb_inttable_done(i));
return i->array_part ? i->index : int_tabent(i)->key;
}
upb_value upb_inttable_iter_value(const upb_inttable_iter* i) {
UPB_ASSERT(!upb_inttable_done(i));
return _upb_value_val(i->array_part ? i->t->array[i->index].val
: int_tabent(i)->val.val);
}
void upb_inttable_iter_setdone(upb_inttable_iter* i) {
i->t = NULL;
i->index = SIZE_MAX;
i->array_part = false;
}
bool upb_inttable_iter_isequal(const upb_inttable_iter* i1,
const upb_inttable_iter* i2) {
if (upb_inttable_done(i1) && upb_inttable_done(i2)) return true;
return i1->t == i2->t && i1->index == i2->index &&
i1->array_part == i2->array_part;
}
/** upb/upb.c ************************************************************/
#include <errno.h>
#include <float.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
// Must be last.
/* upb_Status *****************************************************************/
void upb_Status_Clear(upb_Status* status) {
if (!status) return;
status->ok = true;
status->msg[0] = '\0';
}
bool upb_Status_IsOk(const upb_Status* status) { return status->ok; }
const char* upb_Status_ErrorMessage(const upb_Status* status) {
return status->msg;
}
void upb_Status_SetErrorMessage(upb_Status* status, const char* msg) {
if (!status) return;
status->ok = false;
strncpy(status->msg, msg, _kUpb_Status_MaxMessage - 1);
status->msg[_kUpb_Status_MaxMessage - 1] = '\0';
}
void upb_Status_SetErrorFormat(upb_Status* status, const char* fmt, ...) {
va_list args;
va_start(args, fmt);
upb_Status_VSetErrorFormat(status, fmt, args);
va_end(args);
}
void upb_Status_VSetErrorFormat(upb_Status* status, const char* fmt,
va_list args) {
if (!status) return;
status->ok = false;
vsnprintf(status->msg, sizeof(status->msg), fmt, args);
status->msg[_kUpb_Status_MaxMessage - 1] = '\0';
}
void upb_Status_VAppendErrorFormat(upb_Status* status, const char* fmt,
va_list args) {
size_t len;
if (!status) return;
status->ok = false;
len = strlen(status->msg);
vsnprintf(status->msg + len, sizeof(status->msg) - len, fmt, args);
status->msg[_kUpb_Status_MaxMessage - 1] = '\0';
}
/* upb_alloc ******************************************************************/
static void* upb_global_allocfunc(upb_alloc* alloc, void* ptr, size_t oldsize,
size_t size) {
UPB_UNUSED(alloc);
UPB_UNUSED(oldsize);
if (size == 0) {
free(ptr);
return NULL;
} else {
return realloc(ptr, size);
}
}
static uint32_t* upb_cleanup_pointer(uintptr_t cleanup_metadata) {
return (uint32_t*)(cleanup_metadata & ~0x1);
}
static bool upb_cleanup_has_initial_block(uintptr_t cleanup_metadata) {
return cleanup_metadata & 0x1;
}
static uintptr_t upb_cleanup_metadata(uint32_t* cleanup,
bool has_initial_block) {
return (uintptr_t)cleanup | has_initial_block;
}
upb_alloc upb_alloc_global = {&upb_global_allocfunc};
/* upb_Arena ******************************************************************/
struct mem_block {
struct mem_block* next;
uint32_t size;
uint32_t cleanups;
/* Data follows. */
};
typedef struct cleanup_ent {
upb_CleanupFunc* cleanup;
void* ud;
} cleanup_ent;
static const size_t memblock_reserve =
UPB_ALIGN_UP(sizeof(mem_block), UPB_MALLOC_ALIGN);
static upb_Arena* arena_findroot(upb_Arena* a) {
/* Path splitting keeps time complexity down, see:
* https://en.wikipedia.org/wiki/Disjoint-set_data_structure */
while (a->parent != a) {
upb_Arena* next = a->parent;
a->parent = next->parent;
a = next;
}
return a;
}
static void upb_Arena_addblock(upb_Arena* a, upb_Arena* root, void* ptr,
size_t size) {
mem_block* block = ptr;
/* The block is for arena |a|, but should appear in the freelist of |root|. */
block->next = root->freelist;
block->size = (uint32_t)size;
block->cleanups = 0;
root->freelist = block;
a->last_size = block->size;
if (!root->freelist_tail) root->freelist_tail = block;
a->head.ptr = UPB_PTR_AT(block, memblock_reserve, char);
a->head.end = UPB_PTR_AT(block, size, char);
a->cleanup_metadata = upb_cleanup_metadata(
&block->cleanups, upb_cleanup_has_initial_block(a->cleanup_metadata));
UPB_POISON_MEMORY_REGION(a->head.ptr, a->head.end - a->head.ptr);
}
static bool upb_Arena_Allocblock(upb_Arena* a, size_t size) {
upb_Arena* root = arena_findroot(a);
size_t block_size = UPB_MAX(size, a->last_size * 2) + memblock_reserve;
mem_block* block = upb_malloc(root->block_alloc, block_size);
if (!block) return false;
upb_Arena_addblock(a, root, block, block_size);
return true;
}
void* _upb_Arena_SlowMalloc(upb_Arena* a, size_t size) {
if (!upb_Arena_Allocblock(a, size)) return NULL; /* Out of memory. */
UPB_ASSERT(_upb_ArenaHas(a) >= size);
return upb_Arena_Malloc(a, size);
}
static void* upb_Arena_doalloc(upb_alloc* alloc, void* ptr, size_t oldsize,
size_t size) {
upb_Arena* a = (upb_Arena*)alloc; /* upb_alloc is initial member. */
return upb_Arena_Realloc(a, ptr, oldsize, size);
}
/* Public Arena API ***********************************************************/
upb_Arena* arena_initslow(void* mem, size_t n, upb_alloc* alloc) {
const size_t first_block_overhead = sizeof(upb_Arena) + memblock_reserve;
upb_Arena* a;
/* We need to malloc the initial block. */
n = first_block_overhead + 256;
if (!alloc || !(mem = upb_malloc(alloc, n))) {
return NULL;
}
a = UPB_PTR_AT(mem, n - sizeof(*a), upb_Arena);
n -= sizeof(*a);
a->head.alloc.func = &upb_Arena_doalloc;
a->block_alloc = alloc;
a->parent = a;
a->refcount = 1;
a->freelist = NULL;
a->freelist_tail = NULL;
a->cleanup_metadata = upb_cleanup_metadata(NULL, false);
upb_Arena_addblock(a, a, mem, n);
return a;
}
upb_Arena* upb_Arena_Init(void* mem, size_t n, upb_alloc* alloc) {
upb_Arena* a;
if (n) {
/* Align initial pointer up so that we return properly-aligned pointers. */
void* aligned = (void*)UPB_ALIGN_UP((uintptr_t)mem, UPB_MALLOC_ALIGN);
size_t delta = (uintptr_t)aligned - (uintptr_t)mem;
n = delta <= n ? n - delta : 0;
mem = aligned;
}
/* Round block size down to alignof(*a) since we will allocate the arena
* itself at the end. */
n = UPB_ALIGN_DOWN(n, UPB_ALIGN_OF(upb_Arena));
if (UPB_UNLIKELY(n < sizeof(upb_Arena))) {
return arena_initslow(mem, n, alloc);
}
a = UPB_PTR_AT(mem, n - sizeof(*a), upb_Arena);
a->head.alloc.func = &upb_Arena_doalloc;
a->block_alloc = alloc;
a->parent = a;
a->refcount = 1;
a->last_size = UPB_MAX(128, n);
a->head.ptr = mem;
a->head.end = UPB_PTR_AT(mem, n - sizeof(*a), char);
a->freelist = NULL;
a->cleanup_metadata = upb_cleanup_metadata(NULL, true);
return a;
}
static void arena_dofree(upb_Arena* a) {
mem_block* block = a->freelist;
UPB_ASSERT(a->parent == a);
UPB_ASSERT(a->refcount == 0);
while (block) {
/* Load first since we are deleting block. */
mem_block* next = block->next;
if (block->cleanups > 0) {
cleanup_ent* end = UPB_PTR_AT(block, block->size, void);
cleanup_ent* ptr = end - block->cleanups;
for (; ptr < end; ptr++) {
ptr->cleanup(ptr->ud);
}
}
upb_free(a->block_alloc, block);
block = next;
}
}
void upb_Arena_Free(upb_Arena* a) {
a = arena_findroot(a);
if (--a->refcount == 0) arena_dofree(a);
}
bool upb_Arena_AddCleanup(upb_Arena* a, void* ud, upb_CleanupFunc* func) {
cleanup_ent* ent;
uint32_t* cleanups = upb_cleanup_pointer(a->cleanup_metadata);
if (!cleanups || _upb_ArenaHas(a) < sizeof(cleanup_ent)) {
if (!upb_Arena_Allocblock(a, 128)) return false; /* Out of memory. */
UPB_ASSERT(_upb_ArenaHas(a) >= sizeof(cleanup_ent));
cleanups = upb_cleanup_pointer(a->cleanup_metadata);
}
a->head.end -= sizeof(cleanup_ent);
ent = (cleanup_ent*)a->head.end;
(*cleanups)++;
UPB_UNPOISON_MEMORY_REGION(ent, sizeof(cleanup_ent));
ent->cleanup = func;
ent->ud = ud;
return true;
}
bool upb_Arena_Fuse(upb_Arena* a1, upb_Arena* a2) {
upb_Arena* r1 = arena_findroot(a1);
upb_Arena* r2 = arena_findroot(a2);
if (r1 == r2) return true; /* Already fused. */
/* Do not fuse initial blocks since we cannot lifetime extend them. */
if (upb_cleanup_has_initial_block(r1->cleanup_metadata)) return false;
if (upb_cleanup_has_initial_block(r2->cleanup_metadata)) return false;
/* Only allow fuse with a common allocator */
if (r1->block_alloc != r2->block_alloc) return false;
/* We want to join the smaller tree to the larger tree.
* So swap first if they are backwards. */
if (r1->refcount < r2->refcount) {
upb_Arena* tmp = r1;
r1 = r2;
r2 = tmp;
}
/* r1 takes over r2's freelist and refcount. */
r1->refcount += r2->refcount;
if (r2->freelist_tail) {
UPB_ASSERT(r2->freelist_tail->next == NULL);
r2->freelist_tail->next = r1->freelist;
r1->freelist = r2->freelist;
}
r2->parent = r1;
return true;
}
/* Miscellaneous utilities ****************************************************/
static void upb_FixLocale(char* p) {
/* printf() is dependent on locales; sadly there is no easy and portable way
* to avoid this. This little post-processing step will translate 1,2 -> 1.2
* since JSON needs the latter. Arguably a hack, but it is simple and the
* alternatives are far more complicated, platform-dependent, and/or larger
* in code size. */
for (; *p; p++) {
if (*p == ',') *p = '.';
}
}
void _upb_EncodeRoundTripDouble(double val, char* buf, size_t size) {
assert(size >= kUpb_RoundTripBufferSize);
snprintf(buf, size, "%.*g", DBL_DIG, val);
if (strtod(buf, NULL) != val) {
snprintf(buf, size, "%.*g", DBL_DIG + 2, val);
assert(strtod(buf, NULL) == val);
}
upb_FixLocale(buf);
}
void _upb_EncodeRoundTripFloat(float val, char* buf, size_t size) {
assert(size >= kUpb_RoundTripBufferSize);
snprintf(buf, size, "%.*g", FLT_DIG, val);
if (strtof(buf, NULL) != val) {
snprintf(buf, size, "%.*g", FLT_DIG + 3, val);
assert(strtof(buf, NULL) == val);
}
upb_FixLocale(buf);
}
/** upb/port_undef.inc ************************************************************/
/* See port_def.inc. This should #undef all macros #defined there. */
#undef UPB_SIZE
#undef UPB_PTR_AT
#undef UPB_READ_ONEOF
#undef UPB_WRITE_ONEOF
#undef UPB_MAPTYPE_STRING
#undef UPB_INLINE
#undef UPB_ALIGN_UP
#undef UPB_ALIGN_DOWN
#undef UPB_ALIGN_MALLOC
#undef UPB_ALIGN_OF
#undef UPB_MALLOC_ALIGN
#undef UPB_LIKELY
#undef UPB_UNLIKELY
#undef UPB_FORCEINLINE
#undef UPB_NOINLINE
#undef UPB_NORETURN
#undef UPB_PRINTF
#undef UPB_MAX
#undef UPB_MIN
#undef UPB_UNUSED
#undef UPB_ASSUME
#undef UPB_ASSERT
#undef UPB_UNREACHABLE
#undef UPB_SETJMP
#undef UPB_LONGJMP
#undef UPB_PTRADD
#undef UPB_MUSTTAIL
#undef UPB_FASTTABLE_SUPPORTED
#undef UPB_FASTTABLE
#undef UPB_FASTTABLE_INIT
#undef UPB_POISON_MEMORY_REGION
#undef UPB_UNPOISON_MEMORY_REGION
#undef UPB_ASAN
#undef UPB_TREAT_PROTO2_ENUMS_LIKE_PROTO3