| //! Write the output of rustc's analysis to an implementor of Dump. |
| //! |
| //! Dumping the analysis is implemented by walking the AST and getting a bunch of |
| //! info out from all over the place. We use `DefId`s to identify objects. The |
| //! tricky part is getting syntactic (span, source text) and semantic (reference |
| //! `DefId`s) information for parts of expressions which the compiler has discarded. |
| //! E.g., in a path `foo::bar::baz`, the compiler only keeps a span for the whole |
| //! path and a reference to `baz`, but we want spans and references for all three |
| //! idents. |
| //! |
| //! SpanUtils is used to manipulate spans. In particular, to extract sub-spans |
| //! from spans (e.g., the span for `bar` from the above example path). |
| //! DumpVisitor walks the AST and processes it, and Dumper is used for |
| //! recording the output. |
| |
| use rustc_ast as ast; |
| use rustc_ast::walk_list; |
| use rustc_data_structures::fx::FxHashSet; |
| use rustc_hir as hir; |
| use rustc_hir::def::{DefKind as HirDefKind, Res}; |
| use rustc_hir::def_id::{DefId, LocalDefId, CRATE_DEF_ID}; |
| use rustc_hir::intravisit::{self, Visitor}; |
| use rustc_hir_pretty::{bounds_to_string, fn_to_string, generic_params_to_string, ty_to_string}; |
| use rustc_middle::hir::nested_filter; |
| use rustc_middle::span_bug; |
| use rustc_middle::ty::{self, DefIdTree, TyCtxt}; |
| use rustc_session::config::Input; |
| use rustc_span::symbol::Ident; |
| use rustc_span::*; |
| |
| use std::env; |
| use std::path::Path; |
| |
| use crate::dumper::{Access, Dumper}; |
| use crate::sig; |
| use crate::span_utils::SpanUtils; |
| use crate::{ |
| escape, generated_code, id_from_def_id, id_from_hir_id, lower_attributes, PathCollector, |
| SaveContext, |
| }; |
| |
| use rls_data::{ |
| CompilationOptions, CratePreludeData, Def, DefKind, GlobalCrateId, Import, ImportKind, Ref, |
| RefKind, Relation, RelationKind, SpanData, |
| }; |
| |
| #[rustfmt::skip] // https://github.com/rust-lang/rustfmt/issues/5213 |
| macro_rules! down_cast_data { |
| ($id:ident, $kind:ident, $sp:expr) => { |
| let super::Data::$kind($id) = $id else { |
| span_bug!($sp, "unexpected data kind: {:?}", $id); |
| }; |
| }; |
| } |
| |
| macro_rules! access_from { |
| ($save_ctxt:expr, $id:expr) => { |
| Access { |
| public: $save_ctxt.tcx.visibility($id).is_public(), |
| reachable: $save_ctxt.effective_visibilities.is_reachable($id), |
| } |
| }; |
| } |
| |
| pub struct DumpVisitor<'tcx> { |
| pub save_ctxt: SaveContext<'tcx>, |
| tcx: TyCtxt<'tcx>, |
| dumper: Dumper, |
| |
| span: SpanUtils<'tcx>, |
| // Set of macro definition (callee) spans, and the set |
| // of macro use (callsite) spans. We store these to ensure |
| // we only write one macro def per unique macro definition, and |
| // one macro use per unique callsite span. |
| // mac_defs: FxHashSet<Span>, |
| // macro_calls: FxHashSet<Span>, |
| } |
| |
| impl<'tcx> DumpVisitor<'tcx> { |
| pub fn new(save_ctxt: SaveContext<'tcx>) -> DumpVisitor<'tcx> { |
| let span_utils = SpanUtils::new(&save_ctxt.tcx.sess); |
| let dumper = Dumper::new(save_ctxt.config.clone()); |
| DumpVisitor { tcx: save_ctxt.tcx, save_ctxt, dumper, span: span_utils } |
| } |
| |
| pub fn analysis(&self) -> &rls_data::Analysis { |
| self.dumper.analysis() |
| } |
| |
| fn nest_typeck_results<F>(&mut self, item_def_id: LocalDefId, f: F) |
| where |
| F: FnOnce(&mut Self), |
| { |
| let typeck_results = if self.tcx.has_typeck_results(item_def_id) { |
| Some(self.tcx.typeck(item_def_id)) |
| } else { |
| None |
| }; |
| |
| let old_maybe_typeck_results = self.save_ctxt.maybe_typeck_results; |
| self.save_ctxt.maybe_typeck_results = typeck_results; |
| f(self); |
| self.save_ctxt.maybe_typeck_results = old_maybe_typeck_results; |
| } |
| |
| fn span_from_span(&self, span: Span) -> SpanData { |
| self.save_ctxt.span_from_span(span) |
| } |
| |
| fn lookup_def_id(&self, ref_id: hir::HirId) -> Option<DefId> { |
| self.save_ctxt.lookup_def_id(ref_id) |
| } |
| |
| pub fn dump_crate_info(&mut self, name: &str) { |
| let source_file = self.tcx.sess.local_crate_source_file.as_ref(); |
| let crate_root = source_file.map(|source_file| { |
| let source_file = Path::new(source_file); |
| match source_file.file_name() { |
| Some(_) => source_file.parent().unwrap().display(), |
| None => source_file.display(), |
| } |
| .to_string() |
| }); |
| |
| let data = CratePreludeData { |
| crate_id: GlobalCrateId { |
| name: name.into(), |
| disambiguator: (self.tcx.sess.local_stable_crate_id().to_u64(), 0), |
| }, |
| crate_root: crate_root.unwrap_or_else(|| "<no source>".to_owned()), |
| external_crates: self.save_ctxt.get_external_crates(), |
| span: self.span_from_span(self.tcx.def_span(CRATE_DEF_ID)), |
| }; |
| |
| self.dumper.crate_prelude(data); |
| } |
| |
| pub fn dump_compilation_options(&mut self, input: &Input, crate_name: &str) { |
| // Apply possible `remap-path-prefix` remapping to the input source file |
| // (and don't include remapping args anymore) |
| let (program, arguments) = { |
| let remap_arg_indices = { |
| let mut indices = FxHashSet::default(); |
| // Args are guaranteed to be valid UTF-8 (checked early) |
| for (i, e) in env::args().enumerate() { |
| if e.starts_with("--remap-path-prefix=") { |
| indices.insert(i); |
| } else if e == "--remap-path-prefix" { |
| indices.insert(i); |
| indices.insert(i + 1); |
| } |
| } |
| indices |
| }; |
| |
| let mut args = env::args() |
| .enumerate() |
| .filter(|(i, _)| !remap_arg_indices.contains(i)) |
| .map(|(_, arg)| match input { |
| Input::File(ref path) if path == Path::new(&arg) => { |
| let mapped = &self.tcx.sess.local_crate_source_file; |
| mapped.as_ref().unwrap().to_string_lossy().into() |
| } |
| _ => arg, |
| }); |
| |
| (args.next().unwrap(), args.collect()) |
| }; |
| |
| let data = CompilationOptions { |
| directory: self.tcx.sess.opts.working_dir.remapped_path_if_available().into(), |
| program, |
| arguments, |
| output: self.save_ctxt.compilation_output(crate_name), |
| }; |
| |
| self.dumper.compilation_opts(data); |
| } |
| |
| fn write_segments(&mut self, segments: impl IntoIterator<Item = &'tcx hir::PathSegment<'tcx>>) { |
| for seg in segments { |
| if let Some(data) = self.save_ctxt.get_path_segment_data(seg) { |
| self.dumper.dump_ref(data); |
| } |
| } |
| } |
| |
| fn write_sub_paths(&mut self, path: &'tcx hir::Path<'tcx>) { |
| self.write_segments(path.segments) |
| } |
| |
| // As write_sub_paths, but does not process the last ident in the path (assuming it |
| // will be processed elsewhere). See note on write_sub_paths about global. |
| fn write_sub_paths_truncated(&mut self, path: &'tcx hir::Path<'tcx>) { |
| if let [segments @ .., _] = path.segments { |
| self.write_segments(segments) |
| } |
| } |
| |
| fn process_formals(&mut self, formals: &'tcx [hir::Param<'tcx>], qualname: &str) { |
| for arg in formals { |
| self.visit_pat(&arg.pat); |
| let mut collector = PathCollector::new(self.tcx); |
| collector.visit_pat(&arg.pat); |
| |
| for (hir_id, ident, ..) in collector.collected_idents { |
| let typ = match self.save_ctxt.typeck_results().node_type_opt(hir_id) { |
| Some(s) => s.to_string(), |
| None => continue, |
| }; |
| if !self.span.filter_generated(ident.span) { |
| let id = id_from_hir_id(hir_id, &self.save_ctxt); |
| let span = self.span_from_span(ident.span); |
| |
| self.dumper.dump_def( |
| &Access { public: false, reachable: false }, |
| Def { |
| kind: DefKind::Local, |
| id, |
| span, |
| name: ident.to_string(), |
| qualname: format!("{}::{}", qualname, ident), |
| value: typ, |
| parent: None, |
| children: vec![], |
| decl_id: None, |
| docs: String::new(), |
| sig: None, |
| attributes: vec![], |
| }, |
| ); |
| } |
| } |
| } |
| } |
| |
| fn process_method( |
| &mut self, |
| sig: &'tcx hir::FnSig<'tcx>, |
| body: Option<hir::BodyId>, |
| def_id: LocalDefId, |
| ident: Ident, |
| generics: &'tcx hir::Generics<'tcx>, |
| span: Span, |
| ) { |
| debug!("process_method: {:?}:{}", def_id, ident); |
| |
| let map = self.tcx.hir(); |
| let hir_id = map.local_def_id_to_hir_id(def_id); |
| self.nest_typeck_results(def_id, |v| { |
| if let Some(mut method_data) = v.save_ctxt.get_method_data(hir_id, ident, span) { |
| if let Some(body) = body { |
| v.process_formals(map.body(body).params, &method_data.qualname); |
| } |
| v.process_generic_params(&generics, &method_data.qualname, hir_id); |
| |
| method_data.value = |
| fn_to_string(sig.decl, sig.header, Some(ident.name), generics, &[], None); |
| method_data.sig = sig::method_signature(hir_id, ident, generics, sig, &v.save_ctxt); |
| |
| v.dumper.dump_def(&access_from!(v.save_ctxt, def_id), method_data); |
| } |
| |
| // walk arg and return types |
| for arg in sig.decl.inputs { |
| v.visit_ty(arg); |
| } |
| |
| if let hir::FnRetTy::Return(ref ret_ty) = sig.decl.output { |
| v.visit_ty(ret_ty) |
| } |
| |
| // walk the fn body |
| if let Some(body) = body { |
| v.visit_expr(&map.body(body).value); |
| } |
| }); |
| } |
| |
| fn process_struct_field_def( |
| &mut self, |
| field: &'tcx hir::FieldDef<'tcx>, |
| parent_id: hir::HirId, |
| ) { |
| let field_data = self.save_ctxt.get_field_data(field, parent_id); |
| if let Some(field_data) = field_data { |
| self.dumper.dump_def( |
| &access_from!(self.save_ctxt, self.tcx.hir().local_def_id(field.hir_id)), |
| field_data, |
| ); |
| } |
| } |
| |
| // Dump generic params bindings, then visit_generics |
| fn process_generic_params( |
| &mut self, |
| generics: &'tcx hir::Generics<'tcx>, |
| prefix: &str, |
| id: hir::HirId, |
| ) { |
| for param in generics.params { |
| match param.kind { |
| hir::GenericParamKind::Lifetime { .. } => {} |
| hir::GenericParamKind::Type { .. } => { |
| let param_ss = param.name.ident().span; |
| let name = escape(self.span.snippet(param_ss)); |
| // Append $id to name to make sure each one is unique. |
| let qualname = format!("{}::{}${}", prefix, name, id); |
| if !self.span.filter_generated(param_ss) { |
| let id = id_from_hir_id(param.hir_id, &self.save_ctxt); |
| let span = self.span_from_span(param_ss); |
| |
| self.dumper.dump_def( |
| &Access { public: false, reachable: false }, |
| Def { |
| kind: DefKind::Type, |
| id, |
| span, |
| name, |
| qualname, |
| value: String::new(), |
| parent: None, |
| children: vec![], |
| decl_id: None, |
| docs: String::new(), |
| sig: None, |
| attributes: vec![], |
| }, |
| ); |
| } |
| } |
| hir::GenericParamKind::Const { .. } => {} |
| } |
| } |
| |
| self.visit_generics(generics) |
| } |
| |
| fn process_fn( |
| &mut self, |
| item: &'tcx hir::Item<'tcx>, |
| decl: &'tcx hir::FnDecl<'tcx>, |
| _header: &'tcx hir::FnHeader, |
| ty_params: &'tcx hir::Generics<'tcx>, |
| body: hir::BodyId, |
| ) { |
| let map = self.tcx.hir(); |
| self.nest_typeck_results(item.owner_id.def_id, |v| { |
| let body = map.body(body); |
| if let Some(fn_data) = v.save_ctxt.get_item_data(item) { |
| down_cast_data!(fn_data, DefData, item.span); |
| v.process_formals(body.params, &fn_data.qualname); |
| v.process_generic_params(ty_params, &fn_data.qualname, item.hir_id()); |
| |
| v.dumper.dump_def(&access_from!(v.save_ctxt, item.owner_id.def_id), fn_data); |
| } |
| |
| for arg in decl.inputs { |
| v.visit_ty(arg) |
| } |
| |
| if let hir::FnRetTy::Return(ref ret_ty) = decl.output { |
| v.visit_ty(ret_ty) |
| } |
| |
| v.visit_expr(&body.value); |
| }); |
| } |
| |
| fn process_static_or_const_item( |
| &mut self, |
| item: &'tcx hir::Item<'tcx>, |
| typ: &'tcx hir::Ty<'tcx>, |
| expr: &'tcx hir::Expr<'tcx>, |
| ) { |
| self.nest_typeck_results(item.owner_id.def_id, |v| { |
| if let Some(var_data) = v.save_ctxt.get_item_data(item) { |
| down_cast_data!(var_data, DefData, item.span); |
| v.dumper.dump_def(&access_from!(v.save_ctxt, item.owner_id.def_id), var_data); |
| } |
| v.visit_ty(&typ); |
| v.visit_expr(expr); |
| }); |
| } |
| |
| fn process_assoc_const( |
| &mut self, |
| def_id: LocalDefId, |
| ident: Ident, |
| typ: &'tcx hir::Ty<'tcx>, |
| expr: Option<&'tcx hir::Expr<'tcx>>, |
| parent_id: DefId, |
| attrs: &'tcx [ast::Attribute], |
| ) { |
| let qualname = format!("::{}", self.tcx.def_path_str(def_id.to_def_id())); |
| |
| if !self.span.filter_generated(ident.span) { |
| let hir_id = self.tcx.hir().local_def_id_to_hir_id(def_id); |
| let sig = sig::assoc_const_signature(hir_id, ident.name, typ, expr, &self.save_ctxt); |
| let span = self.span_from_span(ident.span); |
| |
| self.dumper.dump_def( |
| &access_from!(self.save_ctxt, def_id), |
| Def { |
| kind: DefKind::Const, |
| id: id_from_hir_id(hir_id, &self.save_ctxt), |
| span, |
| name: ident.name.to_string(), |
| qualname, |
| value: ty_to_string(&typ), |
| parent: Some(id_from_def_id(parent_id)), |
| children: vec![], |
| decl_id: None, |
| docs: self.save_ctxt.docs_for_attrs(attrs), |
| sig, |
| attributes: lower_attributes(attrs.to_owned(), &self.save_ctxt), |
| }, |
| ); |
| } |
| |
| // walk type and init value |
| self.nest_typeck_results(def_id, |v| { |
| v.visit_ty(typ); |
| if let Some(expr) = expr { |
| v.visit_expr(expr); |
| } |
| }); |
| } |
| |
| // FIXME tuple structs should generate tuple-specific data. |
| fn process_struct( |
| &mut self, |
| item: &'tcx hir::Item<'tcx>, |
| def: &'tcx hir::VariantData<'tcx>, |
| ty_params: &'tcx hir::Generics<'tcx>, |
| ) { |
| debug!("process_struct {:?} {:?}", item, item.span); |
| let name = item.ident.to_string(); |
| let qualname = format!("::{}", self.tcx.def_path_str(item.owner_id.to_def_id())); |
| |
| let kind = match item.kind { |
| hir::ItemKind::Struct(_, _) => DefKind::Struct, |
| hir::ItemKind::Union(_, _) => DefKind::Union, |
| _ => unreachable!(), |
| }; |
| |
| let (value, fields) = match item.kind { |
| hir::ItemKind::Struct(hir::VariantData::Struct(ref fields, ..), ..) |
| | hir::ItemKind::Union(hir::VariantData::Struct(ref fields, ..), ..) => { |
| let include_priv_fields = !self.save_ctxt.config.pub_only; |
| let fields_str = fields |
| .iter() |
| .filter_map(|f| { |
| if include_priv_fields { |
| return Some(f.ident.to_string()); |
| } |
| let def_id = self.save_ctxt.tcx.hir().local_def_id(f.hir_id); |
| if self.save_ctxt.tcx.visibility(def_id).is_public() { |
| Some(f.ident.to_string()) |
| } else { |
| None |
| } |
| }) |
| .collect::<Vec<_>>() |
| .join(", "); |
| let value = format!("{} {{ {} }}", name, fields_str); |
| (value, fields.iter().map(|f| id_from_hir_id(f.hir_id, &self.save_ctxt)).collect()) |
| } |
| _ => (String::new(), vec![]), |
| }; |
| |
| if !self.span.filter_generated(item.ident.span) { |
| let span = self.span_from_span(item.ident.span); |
| let attrs = self.tcx.hir().attrs(item.hir_id()); |
| self.dumper.dump_def( |
| &access_from!(self.save_ctxt, item.owner_id.def_id), |
| Def { |
| kind, |
| id: id_from_def_id(item.owner_id.to_def_id()), |
| span, |
| name, |
| qualname: qualname.clone(), |
| value, |
| parent: None, |
| children: fields, |
| decl_id: None, |
| docs: self.save_ctxt.docs_for_attrs(attrs), |
| sig: sig::item_signature(item, &self.save_ctxt), |
| attributes: lower_attributes(attrs.to_vec(), &self.save_ctxt), |
| }, |
| ); |
| } |
| |
| self.nest_typeck_results(item.owner_id.def_id, |v| { |
| for field in def.fields() { |
| v.process_struct_field_def(field, item.hir_id()); |
| v.visit_ty(&field.ty); |
| } |
| |
| v.process_generic_params(ty_params, &qualname, item.hir_id()); |
| }); |
| } |
| |
| fn process_enum( |
| &mut self, |
| item: &'tcx hir::Item<'tcx>, |
| enum_definition: &'tcx hir::EnumDef<'tcx>, |
| ty_params: &'tcx hir::Generics<'tcx>, |
| ) { |
| let enum_data = self.save_ctxt.get_item_data(item); |
| let Some(enum_data) = enum_data else { |
| return; |
| }; |
| down_cast_data!(enum_data, DefData, item.span); |
| |
| let access = access_from!(self.save_ctxt, item.owner_id.def_id); |
| |
| for variant in enum_definition.variants { |
| let name = variant.ident.name.to_string(); |
| let qualname = format!("{}::{}", enum_data.qualname, name); |
| let name_span = variant.ident.span; |
| |
| match variant.data { |
| hir::VariantData::Struct(ref fields, ..) => { |
| let fields_str = |
| fields.iter().map(|f| f.ident.to_string()).collect::<Vec<_>>().join(", "); |
| let value = format!("{}::{} {{ {} }}", enum_data.name, name, fields_str); |
| if !self.span.filter_generated(name_span) { |
| let span = self.span_from_span(name_span); |
| let id = id_from_hir_id(variant.id, &self.save_ctxt); |
| let parent = Some(id_from_def_id(item.owner_id.to_def_id())); |
| let attrs = self.tcx.hir().attrs(variant.id); |
| |
| self.dumper.dump_def( |
| &access, |
| Def { |
| kind: DefKind::StructVariant, |
| id, |
| span, |
| name, |
| qualname, |
| value, |
| parent, |
| children: vec![], |
| decl_id: None, |
| docs: self.save_ctxt.docs_for_attrs(attrs), |
| sig: sig::variant_signature(variant, &self.save_ctxt), |
| attributes: lower_attributes(attrs.to_vec(), &self.save_ctxt), |
| }, |
| ); |
| } |
| } |
| ref v => { |
| let mut value = format!("{}::{}", enum_data.name, name); |
| if let hir::VariantData::Tuple(fields, _) = v { |
| value.push('('); |
| value.push_str( |
| &fields |
| .iter() |
| .map(|f| ty_to_string(&f.ty)) |
| .collect::<Vec<_>>() |
| .join(", "), |
| ); |
| value.push(')'); |
| } |
| if !self.span.filter_generated(name_span) { |
| let span = self.span_from_span(name_span); |
| let id = id_from_hir_id(variant.id, &self.save_ctxt); |
| let parent = Some(id_from_def_id(item.owner_id.to_def_id())); |
| let attrs = self.tcx.hir().attrs(variant.id); |
| |
| self.dumper.dump_def( |
| &access, |
| Def { |
| kind: DefKind::TupleVariant, |
| id, |
| span, |
| name, |
| qualname, |
| value, |
| parent, |
| children: vec![], |
| decl_id: None, |
| docs: self.save_ctxt.docs_for_attrs(attrs), |
| sig: sig::variant_signature(variant, &self.save_ctxt), |
| attributes: lower_attributes(attrs.to_vec(), &self.save_ctxt), |
| }, |
| ); |
| } |
| } |
| } |
| |
| for field in variant.data.fields() { |
| self.process_struct_field_def(field, variant.id); |
| self.visit_ty(field.ty); |
| } |
| } |
| self.process_generic_params(ty_params, &enum_data.qualname, item.hir_id()); |
| self.dumper.dump_def(&access, enum_data); |
| } |
| |
| fn process_impl(&mut self, item: &'tcx hir::Item<'tcx>, impl_: &'tcx hir::Impl<'tcx>) { |
| if let Some(impl_data) = self.save_ctxt.get_item_data(item) { |
| if !self.span.filter_generated(item.span) { |
| if let super::Data::RelationData(rel, imp) = impl_data { |
| self.dumper.dump_relation(rel); |
| self.dumper.dump_impl(imp); |
| } else { |
| span_bug!(item.span, "unexpected data kind: {:?}", impl_data); |
| } |
| } |
| } |
| |
| let map = self.tcx.hir(); |
| self.nest_typeck_results(item.owner_id.def_id, |v| { |
| v.visit_ty(&impl_.self_ty); |
| if let Some(trait_ref) = &impl_.of_trait { |
| v.process_path(trait_ref.hir_ref_id, &hir::QPath::Resolved(None, &trait_ref.path)); |
| } |
| v.process_generic_params(&impl_.generics, "", item.hir_id()); |
| for impl_item in impl_.items { |
| v.process_impl_item(map.impl_item(impl_item.id), item.owner_id.to_def_id()); |
| } |
| }); |
| } |
| |
| fn process_trait( |
| &mut self, |
| item: &'tcx hir::Item<'tcx>, |
| generics: &'tcx hir::Generics<'tcx>, |
| trait_refs: hir::GenericBounds<'tcx>, |
| methods: &'tcx [hir::TraitItemRef], |
| ) { |
| let name = item.ident.to_string(); |
| let qualname = format!("::{}", self.tcx.def_path_str(item.owner_id.to_def_id())); |
| let mut val = name.clone(); |
| if !generics.params.is_empty() { |
| val.push_str(&generic_params_to_string(generics.params)); |
| } |
| if !trait_refs.is_empty() { |
| val.push_str(": "); |
| val.push_str(&bounds_to_string(trait_refs)); |
| } |
| if !self.span.filter_generated(item.ident.span) { |
| let id = id_from_def_id(item.owner_id.to_def_id()); |
| let span = self.span_from_span(item.ident.span); |
| let children = |
| methods.iter().map(|i| id_from_def_id(i.id.owner_id.to_def_id())).collect(); |
| let attrs = self.tcx.hir().attrs(item.hir_id()); |
| self.dumper.dump_def( |
| &access_from!(self.save_ctxt, item.owner_id.def_id), |
| Def { |
| kind: DefKind::Trait, |
| id, |
| span, |
| name, |
| qualname: qualname.clone(), |
| value: val, |
| parent: None, |
| children, |
| decl_id: None, |
| docs: self.save_ctxt.docs_for_attrs(attrs), |
| sig: sig::item_signature(item, &self.save_ctxt), |
| attributes: lower_attributes(attrs.to_vec(), &self.save_ctxt), |
| }, |
| ); |
| } |
| |
| // supertraits |
| for super_bound in trait_refs.iter() { |
| let (def_id, sub_span) = match *super_bound { |
| hir::GenericBound::Trait(ref trait_ref, _) => ( |
| self.lookup_def_id(trait_ref.trait_ref.hir_ref_id), |
| trait_ref.trait_ref.path.segments.last().unwrap().ident.span, |
| ), |
| hir::GenericBound::LangItemTrait(lang_item, span, _, _) => { |
| (Some(self.tcx.require_lang_item(lang_item, Some(span))), span) |
| } |
| hir::GenericBound::Outlives(..) => continue, |
| }; |
| |
| if let Some(id) = def_id { |
| if !self.span.filter_generated(sub_span) { |
| let span = self.span_from_span(sub_span); |
| self.dumper.dump_ref(Ref { |
| kind: RefKind::Type, |
| span: span.clone(), |
| ref_id: id_from_def_id(id), |
| }); |
| |
| self.dumper.dump_relation(Relation { |
| kind: RelationKind::SuperTrait, |
| span, |
| from: id_from_def_id(id), |
| to: id_from_def_id(item.owner_id.to_def_id()), |
| }); |
| } |
| } |
| } |
| |
| // walk generics and methods |
| self.process_generic_params(generics, &qualname, item.hir_id()); |
| for method in methods { |
| let map = self.tcx.hir(); |
| self.process_trait_item(map.trait_item(method.id), item.owner_id.to_def_id()) |
| } |
| } |
| |
| // `item` is the module in question, represented as an( item. |
| fn process_mod(&mut self, item: &'tcx hir::Item<'tcx>) { |
| if let Some(mod_data) = self.save_ctxt.get_item_data(item) { |
| down_cast_data!(mod_data, DefData, item.span); |
| self.dumper.dump_def(&access_from!(self.save_ctxt, item.owner_id.def_id), mod_data); |
| } |
| } |
| |
| fn dump_path_ref(&mut self, id: hir::HirId, path: &hir::QPath<'tcx>) { |
| let path_data = self.save_ctxt.get_path_data(id, path); |
| if let Some(path_data) = path_data { |
| self.dumper.dump_ref(path_data); |
| } |
| } |
| |
| fn dump_path_segment_ref(&mut self, id: hir::HirId, segment: &hir::PathSegment<'tcx>) { |
| let segment_data = self.save_ctxt.get_path_segment_data_with_id(segment, id); |
| if let Some(segment_data) = segment_data { |
| self.dumper.dump_ref(segment_data); |
| } |
| } |
| |
| fn process_path(&mut self, id: hir::HirId, path: &hir::QPath<'tcx>) { |
| if self.span.filter_generated(path.span()) { |
| return; |
| } |
| self.dump_path_ref(id, path); |
| |
| // Type arguments |
| let segments = match path { |
| hir::QPath::Resolved(ty, path) => { |
| if let Some(ty) = ty { |
| self.visit_ty(ty); |
| } |
| path.segments |
| } |
| hir::QPath::TypeRelative(ty, segment) => { |
| self.visit_ty(ty); |
| std::slice::from_ref(*segment) |
| } |
| hir::QPath::LangItem(..) => return, |
| }; |
| for seg in segments { |
| if let Some(ref generic_args) = seg.args { |
| for arg in generic_args.args { |
| if let hir::GenericArg::Type(ref ty) = arg { |
| self.visit_ty(ty); |
| } |
| } |
| } |
| } |
| |
| if let hir::QPath::Resolved(_, path) = path { |
| self.write_sub_paths_truncated(path); |
| } |
| } |
| |
| fn process_struct_lit( |
| &mut self, |
| ex: &'tcx hir::Expr<'tcx>, |
| path: &'tcx hir::QPath<'tcx>, |
| fields: &'tcx [hir::ExprField<'tcx>], |
| variant: &'tcx ty::VariantDef, |
| rest: Option<&'tcx hir::Expr<'tcx>>, |
| ) { |
| if let Some(_ex_res_data) = self.save_ctxt.get_expr_data(ex) { |
| if let hir::QPath::Resolved(_, path) = path { |
| self.write_sub_paths_truncated(path); |
| } |
| // For MyEnum::MyVariant, get_expr_data gives us MyEnum, not MyVariant. |
| // For recording the span's ref id, we want MyVariant. |
| if !generated_code(ex.span) { |
| let sub_span = path.last_segment_span(); |
| let span = self.save_ctxt.span_from_span(sub_span); |
| let reff = |
| Ref { kind: RefKind::Type, span, ref_id: id_from_def_id(variant.def_id) }; |
| self.dumper.dump_ref(reff); |
| } |
| |
| for field in fields { |
| if let Some(field_data) = self.save_ctxt.get_field_ref_data(field, variant) { |
| self.dumper.dump_ref(field_data); |
| } |
| |
| self.visit_expr(&field.expr) |
| } |
| } |
| |
| if let Some(base) = rest { |
| self.visit_expr(&base); |
| } |
| } |
| |
| fn process_method_call( |
| &mut self, |
| ex: &'tcx hir::Expr<'tcx>, |
| seg: &'tcx hir::PathSegment<'tcx>, |
| receiver: &'tcx hir::Expr<'tcx>, |
| args: &'tcx [hir::Expr<'tcx>], |
| ) { |
| debug!("process_method_call {:?} {:?}", ex, ex.span); |
| if let Some(mcd) = self.save_ctxt.get_expr_data(ex) { |
| down_cast_data!(mcd, RefData, ex.span); |
| if !generated_code(ex.span) { |
| self.dumper.dump_ref(mcd); |
| } |
| } |
| |
| // Explicit types in the turbo-fish. |
| if let Some(generic_args) = seg.args { |
| for arg in generic_args.args { |
| if let hir::GenericArg::Type(ty) = arg { |
| self.visit_ty(&ty) |
| }; |
| } |
| } |
| |
| // walk receiver and args |
| self.visit_expr(receiver); |
| walk_list!(self, visit_expr, args); |
| } |
| |
| fn process_pat(&mut self, p: &'tcx hir::Pat<'tcx>) { |
| match p.kind { |
| hir::PatKind::Struct(ref _path, fields, _) => { |
| // FIXME do something with _path? |
| let adt = match self.save_ctxt.typeck_results().node_type_opt(p.hir_id) { |
| Some(ty) if ty.ty_adt_def().is_some() => ty.ty_adt_def().unwrap(), |
| _ => { |
| intravisit::walk_pat(self, p); |
| return; |
| } |
| }; |
| let variant = adt.variant_of_res(self.save_ctxt.get_path_res(p.hir_id)); |
| |
| for field in fields { |
| if let Some(index) = self.tcx.find_field_index(field.ident, variant) { |
| if !self.span.filter_generated(field.ident.span) { |
| let span = self.span_from_span(field.ident.span); |
| self.dumper.dump_ref(Ref { |
| kind: RefKind::Variable, |
| span, |
| ref_id: id_from_def_id(variant.fields[index].did), |
| }); |
| } |
| } |
| self.visit_pat(&field.pat); |
| } |
| } |
| _ => intravisit::walk_pat(self, p), |
| } |
| } |
| |
| fn process_var_decl(&mut self, pat: &'tcx hir::Pat<'tcx>) { |
| // The pattern could declare multiple new vars, |
| // we must walk the pattern and collect them all. |
| let mut collector = PathCollector::new(self.tcx); |
| collector.visit_pat(&pat); |
| self.visit_pat(&pat); |
| |
| // Process collected paths. |
| for (id, ident, _) in collector.collected_idents { |
| let res = self.save_ctxt.get_path_res(id); |
| match res { |
| Res::Local(hir_id) => { |
| let typ = self |
| .save_ctxt |
| .typeck_results() |
| .node_type_opt(hir_id) |
| .map(|t| t.to_string()) |
| .unwrap_or_default(); |
| |
| // Rust uses the id of the pattern for var lookups, so we'll use it too. |
| if !self.span.filter_generated(ident.span) { |
| let qualname = format!("{}${}", ident, hir_id); |
| let id = id_from_hir_id(hir_id, &self.save_ctxt); |
| let span = self.span_from_span(ident.span); |
| |
| self.dumper.dump_def( |
| &Access { public: false, reachable: false }, |
| Def { |
| kind: DefKind::Local, |
| id, |
| span, |
| name: ident.to_string(), |
| qualname, |
| value: typ, |
| parent: None, |
| children: vec![], |
| decl_id: None, |
| docs: String::new(), |
| sig: None, |
| attributes: vec![], |
| }, |
| ); |
| } |
| } |
| Res::Def( |
| HirDefKind::Ctor(..) |
| | HirDefKind::Const |
| | HirDefKind::AssocConst |
| | HirDefKind::Struct |
| | HirDefKind::Variant |
| | HirDefKind::TyAlias |
| | HirDefKind::AssocTy, |
| _, |
| ) |
| | Res::SelfTyParam { .. } |
| | Res::SelfTyAlias { .. } => { |
| self.dump_path_segment_ref( |
| id, |
| &hir::PathSegment::new(ident, hir::HirId::INVALID, Res::Err), |
| ); |
| } |
| def => { |
| error!("unexpected definition kind when processing collected idents: {:?}", def) |
| } |
| } |
| } |
| |
| for (id, ref path) in collector.collected_paths { |
| self.process_path(id, path); |
| } |
| } |
| |
| /// Extracts macro use and definition information from the AST node defined |
| /// by the given NodeId, using the expansion information from the node's |
| /// span. |
| /// |
| /// If the span is not macro-generated, do nothing, else use callee and |
| /// callsite spans to record macro definition and use data, using the |
| /// mac_uses and mac_defs sets to prevent multiples. |
| fn process_macro_use(&mut self, _span: Span) { |
| // FIXME if we're not dumping the defs (see below), there is no point |
| // dumping refs either. |
| // let source_span = span.source_callsite(); |
| // if !self.macro_calls.insert(source_span) { |
| // return; |
| // } |
| |
| // let data = match self.save_ctxt.get_macro_use_data(span) { |
| // None => return, |
| // Some(data) => data, |
| // }; |
| |
| // self.dumper.macro_use(data); |
| |
| // FIXME write the macro def |
| // let mut hasher = DefaultHasher::new(); |
| // data.callee_span.hash(&mut hasher); |
| // let hash = hasher.finish(); |
| // let qualname = format!("{}::{}", data.name, hash); |
| // Don't write macro definition for imported macros |
| // if !self.mac_defs.contains(&data.callee_span) |
| // && !data.imported { |
| // self.mac_defs.insert(data.callee_span); |
| // if let Some(sub_span) = self.span.span_for_macro_def_name(data.callee_span) { |
| // self.dumper.macro_data(MacroData { |
| // span: sub_span, |
| // name: data.name.clone(), |
| // qualname: qualname.clone(), |
| // // FIXME where do macro docs come from? |
| // docs: String::new(), |
| // }.lower(self.tcx)); |
| // } |
| // } |
| } |
| |
| fn process_trait_item(&mut self, trait_item: &'tcx hir::TraitItem<'tcx>, trait_id: DefId) { |
| self.process_macro_use(trait_item.span); |
| match trait_item.kind { |
| hir::TraitItemKind::Const(ref ty, body) => { |
| let body = body.map(|b| self.tcx.hir().body(b).value); |
| let attrs = self.tcx.hir().attrs(trait_item.hir_id()); |
| self.process_assoc_const( |
| trait_item.owner_id.def_id, |
| trait_item.ident, |
| &ty, |
| body, |
| trait_id, |
| attrs, |
| ); |
| } |
| hir::TraitItemKind::Fn(ref sig, ref trait_fn) => { |
| let body = |
| if let hir::TraitFn::Provided(body) = trait_fn { Some(*body) } else { None }; |
| self.process_method( |
| sig, |
| body, |
| trait_item.owner_id.def_id, |
| trait_item.ident, |
| &trait_item.generics, |
| trait_item.span, |
| ); |
| } |
| hir::TraitItemKind::Type(ref bounds, ref default_ty) => { |
| // FIXME do something with _bounds (for type refs) |
| let name = trait_item.ident.name.to_string(); |
| let qualname = |
| format!("::{}", self.tcx.def_path_str(trait_item.owner_id.to_def_id())); |
| |
| if !self.span.filter_generated(trait_item.ident.span) { |
| let span = self.span_from_span(trait_item.ident.span); |
| let id = id_from_def_id(trait_item.owner_id.to_def_id()); |
| let attrs = self.tcx.hir().attrs(trait_item.hir_id()); |
| |
| self.dumper.dump_def( |
| &Access { public: true, reachable: true }, |
| Def { |
| kind: DefKind::Type, |
| id, |
| span, |
| name, |
| qualname, |
| value: self.span.snippet(trait_item.span), |
| parent: Some(id_from_def_id(trait_id)), |
| children: vec![], |
| decl_id: None, |
| docs: self.save_ctxt.docs_for_attrs(attrs), |
| sig: sig::assoc_type_signature( |
| trait_item.hir_id(), |
| trait_item.ident, |
| Some(bounds), |
| default_ty.as_ref().map(|ty| &**ty), |
| &self.save_ctxt, |
| ), |
| attributes: lower_attributes(attrs.to_vec(), &self.save_ctxt), |
| }, |
| ); |
| } |
| |
| if let Some(default_ty) = default_ty { |
| self.visit_ty(default_ty) |
| } |
| } |
| } |
| } |
| |
| fn process_impl_item(&mut self, impl_item: &'tcx hir::ImplItem<'tcx>, impl_id: DefId) { |
| self.process_macro_use(impl_item.span); |
| match impl_item.kind { |
| hir::ImplItemKind::Const(ref ty, body) => { |
| let body = self.tcx.hir().body(body); |
| let attrs = self.tcx.hir().attrs(impl_item.hir_id()); |
| self.process_assoc_const( |
| impl_item.owner_id.def_id, |
| impl_item.ident, |
| &ty, |
| Some(&body.value), |
| impl_id, |
| attrs, |
| ); |
| } |
| hir::ImplItemKind::Fn(ref sig, body) => { |
| self.process_method( |
| sig, |
| Some(body), |
| impl_item.owner_id.def_id, |
| impl_item.ident, |
| &impl_item.generics, |
| impl_item.span, |
| ); |
| } |
| hir::ImplItemKind::Type(ref ty) => { |
| // FIXME: uses of the assoc type should ideally point to this |
| // 'def' and the name here should be a ref to the def in the |
| // trait. |
| self.visit_ty(ty) |
| } |
| } |
| } |
| |
| pub(crate) fn process_crate(&mut self) { |
| let id = hir::CRATE_HIR_ID; |
| let qualname = |
| format!("::{}", self.tcx.def_path_str(self.tcx.hir().local_def_id(id).to_def_id())); |
| |
| let sm = self.tcx.sess.source_map(); |
| let krate_mod = self.tcx.hir().root_module(); |
| let filename = sm.span_to_filename(krate_mod.spans.inner_span); |
| let data_id = id_from_hir_id(id, &self.save_ctxt); |
| let children = |
| krate_mod.item_ids.iter().map(|i| id_from_def_id(i.owner_id.to_def_id())).collect(); |
| let span = self.span_from_span(krate_mod.spans.inner_span); |
| let attrs = self.tcx.hir().attrs(id); |
| |
| self.dumper.dump_def( |
| &Access { public: true, reachable: true }, |
| Def { |
| kind: DefKind::Mod, |
| id: data_id, |
| name: String::new(), |
| qualname, |
| span, |
| value: filename.prefer_remapped().to_string(), |
| children, |
| parent: None, |
| decl_id: None, |
| docs: self.save_ctxt.docs_for_attrs(attrs), |
| sig: None, |
| attributes: lower_attributes(attrs.to_owned(), &self.save_ctxt), |
| }, |
| ); |
| self.tcx.hir().walk_toplevel_module(self); |
| } |
| |
| fn process_bounds(&mut self, bounds: hir::GenericBounds<'tcx>) { |
| for bound in bounds { |
| if let hir::GenericBound::Trait(ref trait_ref, _) = *bound { |
| self.process_path( |
| trait_ref.trait_ref.hir_ref_id, |
| &hir::QPath::Resolved(None, &trait_ref.trait_ref.path), |
| ) |
| } |
| } |
| } |
| } |
| |
| impl<'tcx> Visitor<'tcx> for DumpVisitor<'tcx> { |
| type NestedFilter = nested_filter::All; |
| |
| fn nested_visit_map(&mut self) -> Self::Map { |
| self.tcx.hir() |
| } |
| |
| fn visit_item(&mut self, item: &'tcx hir::Item<'tcx>) { |
| self.process_macro_use(item.span); |
| match item.kind { |
| hir::ItemKind::Use(path, hir::UseKind::Single) => { |
| let sub_span = path.segments.last().unwrap().ident.span; |
| if !self.span.filter_generated(sub_span) { |
| let access = access_from!(self.save_ctxt, item.owner_id.def_id); |
| let ref_id = self.lookup_def_id(item.hir_id()).map(id_from_def_id); |
| let span = self.span_from_span(sub_span); |
| let parent = self.save_ctxt.tcx.local_parent(item.owner_id.def_id); |
| self.dumper.import( |
| &access, |
| Import { |
| kind: ImportKind::Use, |
| ref_id, |
| span, |
| alias_span: None, |
| name: item.ident.to_string(), |
| value: String::new(), |
| parent: Some(id_from_def_id(parent.to_def_id())), |
| }, |
| ); |
| self.write_sub_paths_truncated(&path); |
| } |
| } |
| hir::ItemKind::Use(path, hir::UseKind::Glob) => { |
| // Make a comma-separated list of names of imported modules. |
| let names = self.tcx.names_imported_by_glob_use(item.owner_id.def_id); |
| let names: Vec<_> = names.iter().map(|n| n.to_string()).collect(); |
| |
| // Otherwise it's a span with wrong macro expansion info, which |
| // we don't want to track anyway, since it's probably macro-internal `use` |
| if let Some(sub_span) = self.span.sub_span_of_star(item.span) { |
| if !self.span.filter_generated(item.span) { |
| let access = access_from!(self.save_ctxt, item.owner_id.def_id); |
| let span = self.span_from_span(sub_span); |
| let parent = self.save_ctxt.tcx.local_parent(item.owner_id.def_id); |
| self.dumper.import( |
| &access, |
| Import { |
| kind: ImportKind::GlobUse, |
| ref_id: None, |
| span, |
| alias_span: None, |
| name: "*".to_owned(), |
| value: names.join(", "), |
| parent: Some(id_from_def_id(parent.to_def_id())), |
| }, |
| ); |
| self.write_sub_paths(&path); |
| } |
| } |
| } |
| hir::ItemKind::ExternCrate(_) => { |
| let name_span = item.ident.span; |
| if !self.span.filter_generated(name_span) { |
| let span = self.span_from_span(name_span); |
| let parent = self.save_ctxt.tcx.local_parent(item.owner_id.def_id); |
| self.dumper.import( |
| &Access { public: false, reachable: false }, |
| Import { |
| kind: ImportKind::ExternCrate, |
| ref_id: None, |
| span, |
| alias_span: None, |
| name: item.ident.to_string(), |
| value: String::new(), |
| parent: Some(id_from_def_id(parent.to_def_id())), |
| }, |
| ); |
| } |
| } |
| hir::ItemKind::Fn(ref sig, ref ty_params, body) => { |
| self.process_fn(item, sig.decl, &sig.header, ty_params, body) |
| } |
| hir::ItemKind::Static(ref typ, _, body) => { |
| let body = self.tcx.hir().body(body); |
| self.process_static_or_const_item(item, typ, &body.value) |
| } |
| hir::ItemKind::Const(ref typ, body) => { |
| let body = self.tcx.hir().body(body); |
| self.process_static_or_const_item(item, typ, &body.value) |
| } |
| hir::ItemKind::Struct(ref def, ref ty_params) |
| | hir::ItemKind::Union(ref def, ref ty_params) => { |
| self.process_struct(item, def, ty_params) |
| } |
| hir::ItemKind::Enum(ref def, ref ty_params) => self.process_enum(item, def, ty_params), |
| hir::ItemKind::Impl(ref impl_) => self.process_impl(item, impl_), |
| hir::ItemKind::Trait(_, _, ref generics, ref trait_refs, methods) => { |
| self.process_trait(item, generics, trait_refs, methods) |
| } |
| hir::ItemKind::Mod(ref m) => { |
| self.process_mod(item); |
| intravisit::walk_mod(self, m, item.hir_id()); |
| } |
| hir::ItemKind::TyAlias(ty, ref generics) => { |
| let qualname = format!("::{}", self.tcx.def_path_str(item.owner_id.to_def_id())); |
| let value = ty_to_string(&ty); |
| if !self.span.filter_generated(item.ident.span) { |
| let span = self.span_from_span(item.ident.span); |
| let id = id_from_def_id(item.owner_id.to_def_id()); |
| let attrs = self.tcx.hir().attrs(item.hir_id()); |
| |
| self.dumper.dump_def( |
| &access_from!(self.save_ctxt, item.owner_id.def_id), |
| Def { |
| kind: DefKind::Type, |
| id, |
| span, |
| name: item.ident.to_string(), |
| qualname: qualname.clone(), |
| value, |
| parent: None, |
| children: vec![], |
| decl_id: None, |
| docs: self.save_ctxt.docs_for_attrs(attrs), |
| sig: sig::item_signature(item, &self.save_ctxt), |
| attributes: lower_attributes(attrs.to_vec(), &self.save_ctxt), |
| }, |
| ); |
| } |
| |
| self.visit_ty(ty); |
| self.process_generic_params(generics, &qualname, item.hir_id()); |
| } |
| _ => intravisit::walk_item(self, item), |
| } |
| } |
| |
| fn visit_generics(&mut self, generics: &'tcx hir::Generics<'tcx>) { |
| for param in generics.params { |
| match param.kind { |
| hir::GenericParamKind::Lifetime { .. } => {} |
| hir::GenericParamKind::Type { ref default, .. } => { |
| if let Some(ref ty) = default { |
| self.visit_ty(ty); |
| } |
| } |
| hir::GenericParamKind::Const { ref ty, ref default } => { |
| self.visit_ty(ty); |
| if let Some(default) = default { |
| self.visit_anon_const(default); |
| } |
| } |
| } |
| } |
| for pred in generics.predicates { |
| if let hir::WherePredicate::BoundPredicate(ref wbp) = *pred { |
| self.process_bounds(wbp.bounds); |
| self.visit_ty(wbp.bounded_ty); |
| } |
| } |
| } |
| |
| fn visit_ty(&mut self, t: &'tcx hir::Ty<'tcx>) { |
| self.process_macro_use(t.span); |
| match t.kind { |
| hir::TyKind::Path(ref path) => { |
| if generated_code(t.span) { |
| return; |
| } |
| |
| if let Some(id) = self.lookup_def_id(t.hir_id) { |
| let sub_span = path.last_segment_span(); |
| let span = self.span_from_span(sub_span); |
| self.dumper.dump_ref(Ref { |
| kind: RefKind::Type, |
| span, |
| ref_id: id_from_def_id(id), |
| }); |
| } |
| |
| if let hir::QPath::Resolved(_, path) = path { |
| self.write_sub_paths_truncated(path); |
| } |
| intravisit::walk_qpath(self, path, t.hir_id); |
| } |
| hir::TyKind::Array(ref ty, ref length) => { |
| self.visit_ty(ty); |
| let map = self.tcx.hir(); |
| match length { |
| // FIXME(generic_arg_infer): We probably want to |
| // output the inferred type here? :shrug: |
| hir::ArrayLen::Infer(..) => {} |
| hir::ArrayLen::Body(anon_const) => self |
| .nest_typeck_results(self.tcx.hir().local_def_id(anon_const.hir_id), |v| { |
| v.visit_expr(&map.body(anon_const.body).value) |
| }), |
| } |
| } |
| hir::TyKind::OpaqueDef(item_id, _, _) => { |
| let item = self.tcx.hir().item(item_id); |
| self.nest_typeck_results(item_id.owner_id.def_id, |v| v.visit_item(item)); |
| } |
| _ => intravisit::walk_ty(self, t), |
| } |
| } |
| |
| fn visit_expr(&mut self, ex: &'tcx hir::Expr<'tcx>) { |
| debug!("visit_expr {:?}", ex.kind); |
| self.process_macro_use(ex.span); |
| match ex.kind { |
| hir::ExprKind::Struct(ref path, ref fields, ref rest) => { |
| let hir_expr = self.save_ctxt.tcx.hir().expect_expr(ex.hir_id); |
| let adt = match self.save_ctxt.typeck_results().expr_ty_opt(&hir_expr) { |
| Some(ty) if ty.ty_adt_def().is_some() => ty.ty_adt_def().unwrap(), |
| _ => { |
| intravisit::walk_expr(self, ex); |
| return; |
| } |
| }; |
| let res = self.save_ctxt.get_path_res(hir_expr.hir_id); |
| self.process_struct_lit(ex, path, fields, adt.variant_of_res(res), *rest) |
| } |
| hir::ExprKind::MethodCall(ref seg, receiver, args, _) => { |
| self.process_method_call(ex, seg, receiver, args) |
| } |
| hir::ExprKind::Field(ref sub_ex, _) => { |
| self.visit_expr(&sub_ex); |
| |
| if let Some(field_data) = self.save_ctxt.get_expr_data(ex) { |
| down_cast_data!(field_data, RefData, ex.span); |
| if !generated_code(ex.span) { |
| self.dumper.dump_ref(field_data); |
| } |
| } |
| } |
| hir::ExprKind::Closure(&hir::Closure { ref fn_decl, body, .. }) => { |
| let id = format!("${}", ex.hir_id); |
| |
| // walk arg and return types |
| for ty in fn_decl.inputs { |
| self.visit_ty(ty); |
| } |
| |
| if let hir::FnRetTy::Return(ref ret_ty) = fn_decl.output { |
| self.visit_ty(ret_ty); |
| } |
| |
| // walk the body |
| let map = self.tcx.hir(); |
| self.nest_typeck_results(self.tcx.hir().local_def_id(ex.hir_id), |v| { |
| let body = map.body(body); |
| v.process_formals(body.params, &id); |
| v.visit_expr(&body.value) |
| }); |
| } |
| hir::ExprKind::Repeat(ref expr, ref length) => { |
| self.visit_expr(expr); |
| let map = self.tcx.hir(); |
| match length { |
| // FIXME(generic_arg_infer): We probably want to |
| // output the inferred type here? :shrug: |
| hir::ArrayLen::Infer(..) => {} |
| hir::ArrayLen::Body(anon_const) => self |
| .nest_typeck_results(self.tcx.hir().local_def_id(anon_const.hir_id), |v| { |
| v.visit_expr(&map.body(anon_const.body).value) |
| }), |
| } |
| } |
| // In particular, we take this branch for call and path expressions, |
| // where we'll index the idents involved just by continuing to walk. |
| _ => intravisit::walk_expr(self, ex), |
| } |
| } |
| |
| fn visit_pat(&mut self, p: &'tcx hir::Pat<'tcx>) { |
| self.process_macro_use(p.span); |
| self.process_pat(p); |
| } |
| |
| fn visit_arm(&mut self, arm: &'tcx hir::Arm<'tcx>) { |
| self.process_var_decl(&arm.pat); |
| if let Some(hir::Guard::If(expr)) = &arm.guard { |
| self.visit_expr(expr); |
| } |
| self.visit_expr(&arm.body); |
| } |
| |
| fn visit_qpath(&mut self, path: &'tcx hir::QPath<'tcx>, id: hir::HirId, _: Span) { |
| self.process_path(id, path); |
| } |
| |
| fn visit_stmt(&mut self, s: &'tcx hir::Stmt<'tcx>) { |
| self.process_macro_use(s.span); |
| intravisit::walk_stmt(self, s) |
| } |
| |
| fn visit_local(&mut self, l: &'tcx hir::Local<'tcx>) { |
| self.process_macro_use(l.span); |
| self.process_var_decl(&l.pat); |
| |
| // Just walk the initializer, the else branch and type (don't want to walk the pattern again). |
| walk_list!(self, visit_ty, &l.ty); |
| walk_list!(self, visit_expr, &l.init); |
| walk_list!(self, visit_block, l.els); |
| } |
| |
| fn visit_foreign_item(&mut self, item: &'tcx hir::ForeignItem<'tcx>) { |
| let access = access_from!(self.save_ctxt, item.owner_id.def_id); |
| |
| match item.kind { |
| hir::ForeignItemKind::Fn(decl, _, ref generics) => { |
| if let Some(fn_data) = self.save_ctxt.get_extern_item_data(item) { |
| down_cast_data!(fn_data, DefData, item.span); |
| |
| self.process_generic_params(generics, &fn_data.qualname, item.hir_id()); |
| self.dumper.dump_def(&access, fn_data); |
| } |
| |
| for ty in decl.inputs { |
| self.visit_ty(ty); |
| } |
| |
| if let hir::FnRetTy::Return(ref ret_ty) = decl.output { |
| self.visit_ty(ret_ty); |
| } |
| } |
| hir::ForeignItemKind::Static(ref ty, _) => { |
| if let Some(var_data) = self.save_ctxt.get_extern_item_data(item) { |
| down_cast_data!(var_data, DefData, item.span); |
| self.dumper.dump_def(&access, var_data); |
| } |
| |
| self.visit_ty(ty); |
| } |
| hir::ForeignItemKind::Type => { |
| if let Some(var_data) = self.save_ctxt.get_extern_item_data(item) { |
| down_cast_data!(var_data, DefData, item.span); |
| self.dumper.dump_def(&access, var_data); |
| } |
| } |
| } |
| } |
| } |
