| extern crate rustc_ast; |
| extern crate rustc_data_structures; |
| extern crate rustc_span; |
| |
| use rustc_ast::ast::{ |
| AngleBracketedArg, AngleBracketedArgs, AnonConst, Arm, AssocItemKind, AssocTyConstraint, |
| AssocTyConstraintKind, Async, AttrId, AttrItem, AttrKind, AttrStyle, Attribute, BareFnTy, |
| BinOpKind, BindingMode, Block, BlockCheckMode, BorrowKind, CaptureBy, Const, Crate, CrateSugar, |
| Defaultness, EnumDef, Expr, ExprField, ExprKind, Extern, FieldDef, FloatTy, FnDecl, FnHeader, |
| FnKind, FnRetTy, FnSig, ForeignItemKind, ForeignMod, GenericArg, GenericArgs, GenericBound, |
| GenericParam, GenericParamKind, Generics, ImplKind, ImplPolarity, Inline, InlineAsm, |
| InlineAsmOperand, InlineAsmOptions, InlineAsmRegOrRegClass, InlineAsmTemplatePiece, IntTy, |
| IsAuto, Item, ItemKind, Label, Lifetime, Lit, LitFloatType, LitIntType, LitKind, |
| LlvmAsmDialect, LlvmInlineAsm, LlvmInlineAsmOutput, Local, LocalKind, MacArgs, MacCall, |
| MacCallStmt, MacDelimiter, MacStmtStyle, MacroDef, ModKind, Movability, MutTy, Mutability, |
| NodeId, Param, ParenthesizedArgs, Pat, PatField, PatKind, Path, PathSegment, PolyTraitRef, |
| QSelf, RangeEnd, RangeLimits, RangeSyntax, Stmt, StmtKind, StrLit, StrStyle, StructExpr, |
| StructRest, TraitBoundModifier, TraitKind, TraitObjectSyntax, TraitRef, Ty, TyAliasKind, |
| TyKind, UintTy, UnOp, Unsafe, UnsafeSource, UseTree, UseTreeKind, Variant, VariantData, |
| Visibility, VisibilityKind, WhereBoundPredicate, WhereClause, WhereEqPredicate, WherePredicate, |
| WhereRegionPredicate, |
| }; |
| use rustc_ast::ptr::P; |
| use rustc_ast::token::{self, CommentKind, DelimToken, Nonterminal, Token, TokenKind}; |
| use rustc_ast::tokenstream::{ |
| AttrAnnotatedTokenStream, AttrAnnotatedTokenTree, AttributesData, DelimSpan, LazyTokenStream, |
| Spacing, TokenStream, TokenTree, |
| }; |
| use rustc_data_structures::sync::Lrc; |
| use rustc_data_structures::thin_vec::ThinVec; |
| use rustc_span::source_map::Spanned; |
| use rustc_span::symbol::{sym, Ident}; |
| use rustc_span::{Span, Symbol, SyntaxContext, DUMMY_SP}; |
| |
| pub trait SpanlessEq { |
| fn eq(&self, other: &Self) -> bool; |
| } |
| |
| impl<T: ?Sized + SpanlessEq> SpanlessEq for Box<T> { |
| fn eq(&self, other: &Self) -> bool { |
| SpanlessEq::eq(&**self, &**other) |
| } |
| } |
| |
| impl<T: SpanlessEq> SpanlessEq for P<T> { |
| fn eq(&self, other: &Self) -> bool { |
| SpanlessEq::eq(&**self, &**other) |
| } |
| } |
| |
| impl<T: ?Sized + SpanlessEq> SpanlessEq for Lrc<T> { |
| fn eq(&self, other: &Self) -> bool { |
| SpanlessEq::eq(&**self, &**other) |
| } |
| } |
| |
| impl<T: SpanlessEq> SpanlessEq for Option<T> { |
| fn eq(&self, other: &Self) -> bool { |
| match (self, other) { |
| (None, None) => true, |
| (Some(this), Some(other)) => SpanlessEq::eq(this, other), |
| _ => false, |
| } |
| } |
| } |
| |
| impl<T: SpanlessEq> SpanlessEq for [T] { |
| fn eq(&self, other: &Self) -> bool { |
| self.len() == other.len() && self.iter().zip(other).all(|(a, b)| SpanlessEq::eq(a, b)) |
| } |
| } |
| |
| impl<T: SpanlessEq> SpanlessEq for Vec<T> { |
| fn eq(&self, other: &Self) -> bool { |
| <[T] as SpanlessEq>::eq(self, other) |
| } |
| } |
| |
| impl<T: SpanlessEq> SpanlessEq for ThinVec<T> { |
| fn eq(&self, other: &Self) -> bool { |
| self.len() == other.len() |
| && self |
| .iter() |
| .zip(other.iter()) |
| .all(|(a, b)| SpanlessEq::eq(a, b)) |
| } |
| } |
| |
| impl<T: SpanlessEq> SpanlessEq for Spanned<T> { |
| fn eq(&self, other: &Self) -> bool { |
| SpanlessEq::eq(&self.node, &other.node) |
| } |
| } |
| |
| impl<A: SpanlessEq, B: SpanlessEq> SpanlessEq for (A, B) { |
| fn eq(&self, other: &Self) -> bool { |
| SpanlessEq::eq(&self.0, &other.0) && SpanlessEq::eq(&self.1, &other.1) |
| } |
| } |
| |
| impl<A: SpanlessEq, B: SpanlessEq, C: SpanlessEq> SpanlessEq for (A, B, C) { |
| fn eq(&self, other: &Self) -> bool { |
| SpanlessEq::eq(&self.0, &other.0) |
| && SpanlessEq::eq(&self.1, &other.1) |
| && SpanlessEq::eq(&self.2, &other.2) |
| } |
| } |
| |
| macro_rules! spanless_eq_true { |
| ($name:ty) => { |
| impl SpanlessEq for $name { |
| fn eq(&self, _other: &Self) -> bool { |
| true |
| } |
| } |
| }; |
| } |
| |
| spanless_eq_true!(Span); |
| spanless_eq_true!(DelimSpan); |
| spanless_eq_true!(AttrId); |
| spanless_eq_true!(NodeId); |
| spanless_eq_true!(SyntaxContext); |
| spanless_eq_true!(Spacing); |
| |
| macro_rules! spanless_eq_partial_eq { |
| ($name:ty) => { |
| impl SpanlessEq for $name { |
| fn eq(&self, other: &Self) -> bool { |
| PartialEq::eq(self, other) |
| } |
| } |
| }; |
| } |
| |
| spanless_eq_partial_eq!(bool); |
| spanless_eq_partial_eq!(u8); |
| spanless_eq_partial_eq!(u16); |
| spanless_eq_partial_eq!(u128); |
| spanless_eq_partial_eq!(usize); |
| spanless_eq_partial_eq!(char); |
| spanless_eq_partial_eq!(String); |
| spanless_eq_partial_eq!(Symbol); |
| spanless_eq_partial_eq!(CommentKind); |
| spanless_eq_partial_eq!(DelimToken); |
| spanless_eq_partial_eq!(InlineAsmOptions); |
| spanless_eq_partial_eq!(token::LitKind); |
| |
| macro_rules! spanless_eq_struct { |
| { |
| $($name:ident)::+ $(<$param:ident>)? |
| $([$field:tt $this:ident $other:ident])* |
| $(![$ignore:tt])*; |
| } => { |
| impl $(<$param: SpanlessEq>)* SpanlessEq for $($name)::+ $(<$param>)* { |
| fn eq(&self, other: &Self) -> bool { |
| let $($name)::+ { $($field: $this,)* $($ignore: _,)* } = self; |
| let $($name)::+ { $($field: $other,)* $($ignore: _,)* } = other; |
| true $(&& SpanlessEq::eq($this, $other))* |
| } |
| } |
| }; |
| |
| { |
| $($name:ident)::+ $(<$param:ident>)? |
| $([$field:tt $this:ident $other:ident])* |
| $(![$ignore:tt])*; |
| !$next:tt |
| $($rest:tt)* |
| } => { |
| spanless_eq_struct! { |
| $($name)::+ $(<$param>)* |
| $([$field $this $other])* |
| $(![$ignore])* |
| ![$next]; |
| $($rest)* |
| } |
| }; |
| |
| { |
| $($name:ident)::+ $(<$param:ident>)? |
| $([$field:tt $this:ident $other:ident])* |
| $(![$ignore:tt])*; |
| $next:tt |
| $($rest:tt)* |
| } => { |
| spanless_eq_struct! { |
| $($name)::+ $(<$param>)* |
| $([$field $this $other])* |
| [$next this other] |
| $(![$ignore])*; |
| $($rest)* |
| } |
| }; |
| } |
| |
| macro_rules! spanless_eq_enum { |
| { |
| $($name:ident)::+; |
| $([$($variant:ident)::+; $([$field:tt $this:ident $other:ident])* $(![$ignore:tt])*])* |
| } => { |
| impl SpanlessEq for $($name)::+ { |
| fn eq(&self, other: &Self) -> bool { |
| match self { |
| $( |
| $($variant)::+ { .. } => {} |
| )* |
| } |
| #[allow(unreachable_patterns)] |
| match (self, other) { |
| $( |
| ( |
| $($variant)::+ { $($field: $this,)* $($ignore: _,)* }, |
| $($variant)::+ { $($field: $other,)* $($ignore: _,)* }, |
| ) => { |
| true $(&& SpanlessEq::eq($this, $other))* |
| } |
| )* |
| _ => false, |
| } |
| } |
| } |
| }; |
| |
| { |
| $($name:ident)::+; |
| $([$($variant:ident)::+; $($fields:tt)*])* |
| $next:ident [$([$($named:tt)*])* $(![$ignore:tt])*] (!$i:tt $($field:tt)*) |
| $($rest:tt)* |
| } => { |
| spanless_eq_enum! { |
| $($name)::+; |
| $([$($variant)::+; $($fields)*])* |
| $next [$([$($named)*])* $(![$ignore])* ![$i]] ($($field)*) |
| $($rest)* |
| } |
| }; |
| |
| { |
| $($name:ident)::+; |
| $([$($variant:ident)::+; $($fields:tt)*])* |
| $next:ident [$([$($named:tt)*])* $(![$ignore:tt])*] ($i:tt $($field:tt)*) |
| $($rest:tt)* |
| } => { |
| spanless_eq_enum! { |
| $($name)::+; |
| $([$($variant)::+; $($fields)*])* |
| $next [$([$($named)*])* [$i this other] $(![$ignore])*] ($($field)*) |
| $($rest)* |
| } |
| }; |
| |
| { |
| $($name:ident)::+; |
| $([$($variant:ident)::+; $($fields:tt)*])* |
| $next:ident [$($named:tt)*] () |
| $($rest:tt)* |
| } => { |
| spanless_eq_enum! { |
| $($name)::+; |
| $([$($variant)::+; $($fields)*])* |
| [$($name)::+::$next; $($named)*] |
| $($rest)* |
| } |
| }; |
| |
| { |
| $($name:ident)::+; |
| $([$($variant:ident)::+; $($fields:tt)*])* |
| $next:ident ($($field:tt)*) |
| $($rest:tt)* |
| } => { |
| spanless_eq_enum! { |
| $($name)::+; |
| $([$($variant)::+; $($fields)*])* |
| $next [] ($($field)*) |
| $($rest)* |
| } |
| }; |
| |
| { |
| $($name:ident)::+; |
| $([$($variant:ident)::+; $($fields:tt)*])* |
| $next:ident |
| $($rest:tt)* |
| } => { |
| spanless_eq_enum! { |
| $($name)::+; |
| $([$($variant)::+; $($fields)*])* |
| [$($name)::+::$next;] |
| $($rest)* |
| } |
| }; |
| } |
| |
| spanless_eq_struct!(AngleBracketedArgs; span args); |
| spanless_eq_struct!(AnonConst; id value); |
| spanless_eq_struct!(Arm; attrs pat guard body span id is_placeholder); |
| spanless_eq_struct!(AssocTyConstraint; id ident gen_args kind span); |
| spanless_eq_struct!(AttrAnnotatedTokenStream; 0); |
| spanless_eq_struct!(AttrItem; path args tokens); |
| spanless_eq_struct!(Attribute; kind id style span); |
| spanless_eq_struct!(AttributesData; attrs tokens); |
| spanless_eq_struct!(BareFnTy; unsafety ext generic_params decl); |
| spanless_eq_struct!(Block; stmts id rules span tokens could_be_bare_literal); |
| spanless_eq_struct!(Crate; attrs items span); |
| spanless_eq_struct!(EnumDef; variants); |
| spanless_eq_struct!(Expr; id kind span attrs !tokens); |
| spanless_eq_struct!(ExprField; attrs id span ident expr is_shorthand is_placeholder); |
| spanless_eq_struct!(FieldDef; attrs id span vis ident ty is_placeholder); |
| spanless_eq_struct!(FnDecl; inputs output); |
| spanless_eq_struct!(FnHeader; constness asyncness unsafety ext); |
| spanless_eq_struct!(FnKind; 0 1 2 3); |
| spanless_eq_struct!(FnSig; header decl span); |
| spanless_eq_struct!(ForeignMod; unsafety abi items); |
| spanless_eq_struct!(GenericParam; id ident attrs bounds is_placeholder kind); |
| spanless_eq_struct!(Generics; params where_clause span); |
| spanless_eq_struct!(ImplKind; unsafety polarity defaultness constness generics of_trait self_ty items); |
| spanless_eq_struct!(InlineAsm; template template_strs operands clobber_abi options line_spans); |
| spanless_eq_struct!(Item<K>; attrs id span vis ident kind !tokens); |
| spanless_eq_struct!(Label; ident); |
| spanless_eq_struct!(Lifetime; id ident); |
| spanless_eq_struct!(Lit; token kind span); |
| spanless_eq_struct!(LlvmInlineAsm; asm asm_str_style outputs inputs clobbers volatile alignstack dialect); |
| spanless_eq_struct!(LlvmInlineAsmOutput; constraint expr is_rw is_indirect); |
| spanless_eq_struct!(Local; pat ty kind id span attrs !tokens); |
| spanless_eq_struct!(MacCall; path args prior_type_ascription); |
| spanless_eq_struct!(MacCallStmt; mac style attrs tokens); |
| spanless_eq_struct!(MacroDef; body macro_rules); |
| spanless_eq_struct!(MutTy; ty mutbl); |
| spanless_eq_struct!(ParenthesizedArgs; span inputs inputs_span output); |
| spanless_eq_struct!(Pat; id kind span tokens); |
| spanless_eq_struct!(PatField; ident pat is_shorthand attrs id span is_placeholder); |
| spanless_eq_struct!(Path; span segments tokens); |
| spanless_eq_struct!(PathSegment; ident id args); |
| spanless_eq_struct!(PolyTraitRef; bound_generic_params trait_ref span); |
| spanless_eq_struct!(QSelf; ty path_span position); |
| spanless_eq_struct!(Stmt; id kind span); |
| spanless_eq_struct!(StrLit; style symbol suffix span symbol_unescaped); |
| spanless_eq_struct!(StructExpr; qself path fields rest); |
| spanless_eq_struct!(Token; kind span); |
| spanless_eq_struct!(TraitKind; 0 1 2 3 4); |
| spanless_eq_struct!(TraitRef; path ref_id); |
| spanless_eq_struct!(Ty; id kind span tokens); |
| spanless_eq_struct!(TyAliasKind; 0 1 2 3); |
| spanless_eq_struct!(UseTree; prefix kind span); |
| spanless_eq_struct!(Variant; attrs id span !vis ident data disr_expr is_placeholder); |
| spanless_eq_struct!(Visibility; kind span tokens); |
| spanless_eq_struct!(WhereBoundPredicate; span bound_generic_params bounded_ty bounds); |
| spanless_eq_struct!(WhereClause; has_where_token predicates span); |
| spanless_eq_struct!(WhereEqPredicate; id span lhs_ty rhs_ty); |
| spanless_eq_struct!(WhereRegionPredicate; span lifetime bounds); |
| spanless_eq_struct!(token::Lit; kind symbol suffix); |
| spanless_eq_enum!(AngleBracketedArg; Arg(0) Constraint(0)); |
| spanless_eq_enum!(AssocItemKind; Const(0 1 2) Fn(0) TyAlias(0) MacCall(0)); |
| spanless_eq_enum!(AssocTyConstraintKind; Equality(ty) Bound(bounds)); |
| spanless_eq_enum!(Async; Yes(span closure_id return_impl_trait_id) No); |
| spanless_eq_enum!(AttrAnnotatedTokenTree; Token(0) Delimited(0 1 2) Attributes(0)); |
| spanless_eq_enum!(AttrStyle; Outer Inner); |
| spanless_eq_enum!(BinOpKind; Add Sub Mul Div Rem And Or BitXor BitAnd BitOr Shl Shr Eq Lt Le Ne Ge Gt); |
| spanless_eq_enum!(BindingMode; ByRef(0) ByValue(0)); |
| spanless_eq_enum!(BlockCheckMode; Default Unsafe(0)); |
| spanless_eq_enum!(BorrowKind; Ref Raw); |
| spanless_eq_enum!(CaptureBy; Value Ref); |
| spanless_eq_enum!(Const; Yes(0) No); |
| spanless_eq_enum!(CrateSugar; PubCrate JustCrate); |
| spanless_eq_enum!(Defaultness; Default(0) Final); |
| spanless_eq_enum!(Extern; None Implicit Explicit(0)); |
| spanless_eq_enum!(FloatTy; F32 F64); |
| spanless_eq_enum!(FnRetTy; Default(0) Ty(0)); |
| spanless_eq_enum!(ForeignItemKind; Static(0 1 2) Fn(0) TyAlias(0) MacCall(0)); |
| spanless_eq_enum!(GenericArg; Lifetime(0) Type(0) Const(0)); |
| spanless_eq_enum!(GenericArgs; AngleBracketed(0) Parenthesized(0)); |
| spanless_eq_enum!(GenericBound; Trait(0 1) Outlives(0)); |
| spanless_eq_enum!(GenericParamKind; Lifetime Type(default) Const(ty kw_span default)); |
| spanless_eq_enum!(ImplPolarity; Positive Negative(0)); |
| spanless_eq_enum!(Inline; Yes No); |
| spanless_eq_enum!(InlineAsmRegOrRegClass; Reg(0) RegClass(0)); |
| spanless_eq_enum!(InlineAsmTemplatePiece; String(0) Placeholder(operand_idx modifier span)); |
| spanless_eq_enum!(IntTy; Isize I8 I16 I32 I64 I128); |
| spanless_eq_enum!(IsAuto; Yes No); |
| spanless_eq_enum!(LitFloatType; Suffixed(0) Unsuffixed); |
| spanless_eq_enum!(LitIntType; Signed(0) Unsigned(0) Unsuffixed); |
| spanless_eq_enum!(LlvmAsmDialect; Att Intel); |
| spanless_eq_enum!(LocalKind; Decl Init(0) InitElse(0 1)); |
| spanless_eq_enum!(MacArgs; Empty Delimited(0 1 2) Eq(0 1)); |
| spanless_eq_enum!(MacDelimiter; Parenthesis Bracket Brace); |
| spanless_eq_enum!(MacStmtStyle; Semicolon Braces NoBraces); |
| spanless_eq_enum!(ModKind; Loaded(0 1 2) Unloaded); |
| spanless_eq_enum!(Movability; Static Movable); |
| spanless_eq_enum!(Mutability; Mut Not); |
| spanless_eq_enum!(RangeEnd; Included(0) Excluded); |
| spanless_eq_enum!(RangeLimits; HalfOpen Closed); |
| spanless_eq_enum!(StmtKind; Local(0) Item(0) Expr(0) Semi(0) Empty MacCall(0)); |
| spanless_eq_enum!(StrStyle; Cooked Raw(0)); |
| spanless_eq_enum!(StructRest; Base(0) Rest(0) None); |
| spanless_eq_enum!(TokenTree; Token(0) Delimited(0 1 2)); |
| spanless_eq_enum!(TraitBoundModifier; None Maybe MaybeConst MaybeConstMaybe); |
| spanless_eq_enum!(TraitObjectSyntax; Dyn None); |
| spanless_eq_enum!(UintTy; Usize U8 U16 U32 U64 U128); |
| spanless_eq_enum!(UnOp; Deref Not Neg); |
| spanless_eq_enum!(Unsafe; Yes(0) No); |
| spanless_eq_enum!(UnsafeSource; CompilerGenerated UserProvided); |
| spanless_eq_enum!(UseTreeKind; Simple(0 1 2) Nested(0) Glob); |
| spanless_eq_enum!(VariantData; Struct(0 1) Tuple(0 1) Unit(0)); |
| spanless_eq_enum!(VisibilityKind; Public Crate(0) Restricted(path id) Inherited); |
| spanless_eq_enum!(WherePredicate; BoundPredicate(0) RegionPredicate(0) EqPredicate(0)); |
| spanless_eq_enum!(ExprKind; Box(0) Array(0) ConstBlock(0) Call(0 1) |
| MethodCall(0 1 2) Tup(0) Binary(0 1 2) Unary(0 1) Lit(0) Cast(0 1) Type(0 1) |
| Let(0 1 2) If(0 1 2) While(0 1 2) ForLoop(0 1 2 3) Loop(0 1) Match(0 1) |
| Closure(0 1 2 3 4 5) Block(0 1) Async(0 1 2) Await(0) TryBlock(0) |
| Assign(0 1 2) AssignOp(0 1 2) Field(0 1) Index(0 1) Underscore Range(0 1 2) |
| Path(0 1) AddrOf(0 1 2) Break(0 1) Continue(0) Ret(0) InlineAsm(0) |
| LlvmInlineAsm(0) MacCall(0) Struct(0) Repeat(0 1) Paren(0) Try(0) Yield(0) |
| Err); |
| spanless_eq_enum!(InlineAsmOperand; In(reg expr) Out(reg late expr) |
| InOut(reg late expr) SplitInOut(reg late in_expr out_expr) Const(anon_const) |
| Sym(expr)); |
| spanless_eq_enum!(ItemKind; ExternCrate(0) Use(0) Static(0 1 2) Const(0 1 2) |
| Fn(0) Mod(0 1) ForeignMod(0) GlobalAsm(0) TyAlias(0) Enum(0 1) Struct(0 1) |
| Union(0 1) Trait(0) TraitAlias(0 1) Impl(0) MacCall(0) MacroDef(0)); |
| spanless_eq_enum!(LitKind; Str(0 1) ByteStr(0) Byte(0) Char(0) Int(0 1) |
| Float(0 1) Bool(0) Err(0)); |
| spanless_eq_enum!(PatKind; Wild Ident(0 1 2) Struct(0 1 2 3) TupleStruct(0 1 2) |
| Or(0) Path(0 1) Tuple(0) Box(0) Ref(0 1) Lit(0) Range(0 1 2) Slice(0) Rest |
| Paren(0) MacCall(0)); |
| spanless_eq_enum!(TyKind; Slice(0) Array(0 1) Ptr(0) Rptr(0 1) BareFn(0) Never |
| Tup(0) Path(0 1) TraitObject(0 1) ImplTrait(0 1) Paren(0) Typeof(0) Infer |
| ImplicitSelf MacCall(0) Err CVarArgs); |
| |
| impl SpanlessEq for Ident { |
| fn eq(&self, other: &Self) -> bool { |
| self.as_str() == other.as_str() |
| } |
| } |
| |
| impl SpanlessEq for RangeSyntax { |
| fn eq(&self, _other: &Self) -> bool { |
| match self { |
| RangeSyntax::DotDotDot | RangeSyntax::DotDotEq => true, |
| } |
| } |
| } |
| |
| impl SpanlessEq for Param { |
| fn eq(&self, other: &Self) -> bool { |
| let Param { |
| attrs, |
| ty, |
| pat, |
| id, |
| span: _, |
| is_placeholder, |
| } = self; |
| let Param { |
| attrs: attrs2, |
| ty: ty2, |
| pat: pat2, |
| id: id2, |
| span: _, |
| is_placeholder: is_placeholder2, |
| } = other; |
| SpanlessEq::eq(id, id2) |
| && SpanlessEq::eq(is_placeholder, is_placeholder2) |
| && (matches!(ty.kind, TyKind::Err) |
| || matches!(ty2.kind, TyKind::Err) |
| || SpanlessEq::eq(attrs, attrs2) |
| && SpanlessEq::eq(ty, ty2) |
| && SpanlessEq::eq(pat, pat2)) |
| } |
| } |
| |
| impl SpanlessEq for TokenKind { |
| fn eq(&self, other: &Self) -> bool { |
| match (self, other) { |
| (TokenKind::Literal(this), TokenKind::Literal(other)) => SpanlessEq::eq(this, other), |
| (TokenKind::DotDotEq, _) | (TokenKind::DotDotDot, _) => match other { |
| TokenKind::DotDotEq | TokenKind::DotDotDot => true, |
| _ => false, |
| }, |
| (TokenKind::Interpolated(this), TokenKind::Interpolated(other)) => { |
| match (this.as_ref(), other.as_ref()) { |
| (Nonterminal::NtExpr(this), Nonterminal::NtExpr(other)) => { |
| SpanlessEq::eq(this, other) |
| } |
| _ => this == other, |
| } |
| } |
| _ => self == other, |
| } |
| } |
| } |
| |
| impl SpanlessEq for TokenStream { |
| fn eq(&self, other: &Self) -> bool { |
| let mut this_trees = self.trees(); |
| let mut other_trees = other.trees(); |
| loop { |
| let this = match this_trees.next() { |
| None => return other_trees.next().is_none(), |
| Some(tree) => tree, |
| }; |
| let other = match other_trees.next() { |
| None => return false, |
| Some(tree) => tree, |
| }; |
| if SpanlessEq::eq(&this, &other) { |
| continue; |
| } |
| if let (TokenTree::Token(this), TokenTree::Token(other)) = (this, other) { |
| if match (&this.kind, &other.kind) { |
| (TokenKind::Literal(this), TokenKind::Literal(other)) => { |
| SpanlessEq::eq(this, other) |
| } |
| (TokenKind::DocComment(_kind, style, symbol), TokenKind::Pound) => { |
| doc_comment(*style, *symbol, &mut other_trees) |
| } |
| (TokenKind::Pound, TokenKind::DocComment(_kind, style, symbol)) => { |
| doc_comment(*style, *symbol, &mut this_trees) |
| } |
| _ => false, |
| } { |
| continue; |
| } |
| } |
| return false; |
| } |
| } |
| } |
| |
| fn doc_comment( |
| style: AttrStyle, |
| unescaped: Symbol, |
| trees: &mut impl Iterator<Item = TokenTree>, |
| ) -> bool { |
| if match style { |
| AttrStyle::Outer => false, |
| AttrStyle::Inner => true, |
| } { |
| match trees.next() { |
| Some(TokenTree::Token(Token { |
| kind: TokenKind::Not, |
| span: _, |
| })) => {} |
| _ => return false, |
| } |
| } |
| let stream = match trees.next() { |
| Some(TokenTree::Delimited(_span, DelimToken::Bracket, stream)) => stream, |
| _ => return false, |
| }; |
| let mut trees = stream.trees(); |
| match trees.next() { |
| Some(TokenTree::Token(Token { |
| kind: TokenKind::Ident(symbol, false), |
| span: _, |
| })) if symbol == sym::doc => {} |
| _ => return false, |
| } |
| match trees.next() { |
| Some(TokenTree::Token(Token { |
| kind: TokenKind::Eq, |
| span: _, |
| })) => {} |
| _ => return false, |
| } |
| match trees.next() { |
| Some(TokenTree::Token(token)) => { |
| is_escaped_literal(&token, unescaped) && trees.next().is_none() |
| } |
| _ => false, |
| } |
| } |
| |
| fn is_escaped_literal(token: &Token, unescaped: Symbol) -> bool { |
| match match token { |
| Token { |
| kind: TokenKind::Literal(lit), |
| span: _, |
| } => Lit::from_lit_token(*lit, DUMMY_SP), |
| Token { |
| kind: TokenKind::Interpolated(nonterminal), |
| span: _, |
| } => match nonterminal.as_ref() { |
| Nonterminal::NtExpr(expr) => match &expr.kind { |
| ExprKind::Lit(lit) => Ok(lit.clone()), |
| _ => return false, |
| }, |
| _ => return false, |
| }, |
| _ => return false, |
| } { |
| Ok(Lit { |
| token: |
| token::Lit { |
| kind: token::LitKind::Str, |
| symbol: _, |
| suffix: None, |
| }, |
| kind: LitKind::Str(symbol, StrStyle::Cooked), |
| span: _, |
| }) => symbol.as_str().replace('\r', "") == unescaped.as_str().replace('\r', ""), |
| _ => false, |
| } |
| } |
| |
| impl SpanlessEq for LazyTokenStream { |
| fn eq(&self, other: &Self) -> bool { |
| let this = self.create_token_stream(); |
| let other = other.create_token_stream(); |
| SpanlessEq::eq(&this, &other) |
| } |
| } |
| |
| impl SpanlessEq for AttrKind { |
| fn eq(&self, other: &Self) -> bool { |
| match (self, other) { |
| (AttrKind::Normal(item, tokens), AttrKind::Normal(item2, tokens2)) => { |
| SpanlessEq::eq(item, item2) && SpanlessEq::eq(tokens, tokens2) |
| } |
| (AttrKind::DocComment(kind, symbol), AttrKind::DocComment(kind2, symbol2)) => { |
| SpanlessEq::eq(kind, kind2) && SpanlessEq::eq(symbol, symbol2) |
| } |
| (AttrKind::DocComment(kind, unescaped), AttrKind::Normal(item2, _tokens)) => { |
| match kind { |
| CommentKind::Line | CommentKind::Block => {} |
| } |
| let path = Path::from_ident(Ident::with_dummy_span(sym::doc)); |
| SpanlessEq::eq(&path, &item2.path) |
| && match &item2.args { |
| MacArgs::Empty | MacArgs::Delimited(..) => false, |
| MacArgs::Eq(_span, token) => is_escaped_literal(token, *unescaped), |
| } |
| } |
| (AttrKind::Normal(..), AttrKind::DocComment(..)) => SpanlessEq::eq(other, self), |
| } |
| } |
| } |
