// except according to those terms.
#![crate_name = "rustc_resolve"]
-#![unstable(feature = "rustc_private", issue = "27812")]
#![crate_type = "dylib"]
#![crate_type = "rlib"]
#![doc(html_logo_url = "https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png",
#![feature(associated_consts)]
#![feature(rustc_diagnostic_macros)]
-#![feature(rustc_private)]
-#![feature(staged_api)]
+
+#![cfg_attr(stage0, unstable(feature = "rustc_private", issue = "27812"))]
+#![cfg_attr(stage0, feature(rustc_private))]
+#![cfg_attr(stage0, feature(staged_api))]
#[macro_use]
extern crate log;
use rustc::session::Session;
use rustc::lint;
use rustc::hir::def::*;
-use rustc::hir::def_id::{CrateNum, CRATE_DEF_INDEX, LOCAL_CRATE, DefId};
+use rustc::hir::def_id::{CRATE_DEF_INDEX, LOCAL_CRATE, DefId};
use rustc::ty;
use rustc::hir::{Freevar, FreevarMap, TraitCandidate, TraitMap, GlobMap};
use rustc::util::nodemap::{NodeMap, NodeSet, FxHashMap, FxHashSet, DefIdMap};
use syntax::ext::hygiene::{Mark, SyntaxContext};
use syntax::ast::{self, Name, NodeId, Ident, SpannedIdent, FloatTy, IntTy, UintTy};
use syntax::ext::base::SyntaxExtension;
-use syntax::ext::base::Determinacy::{Determined, Undetermined};
+use syntax::ext::base::Determinacy::{self, Determined, Undetermined};
use syntax::ext::base::MacroKind;
use syntax::symbol::{Symbol, keywords};
use syntax::util::lev_distance::find_best_match_for_name;
enum ResolutionError<'a> {
/// error E0401: can't use type parameters from outer function
TypeParametersFromOuterFunction,
- /// error E0402: cannot use an outer type parameter in this context
- OuterTypeParameterContext,
/// error E0403: the name is already used for a type parameter in this type parameter list
NameAlreadyUsedInTypeParameterList(Name, &'a Span),
/// error E0407: method is not a member of trait
err.span_label(span, "use of type variable from outer function");
err
}
- ResolutionError::OuterTypeParameterContext => {
- struct_span_err!(resolver.session,
- span,
- E0402,
- "cannot use an outer type parameter in this context")
- }
ResolutionError::NameAlreadyUsedInTypeParameterList(name, first_use_span) => {
let mut err = struct_span_err!(resolver.session,
span,
/// Span of the module itself. Used for error reporting.
span: Span,
+
+ expansion: Mark,
}
pub type Module<'a> = &'a ModuleData<'a>;
fn new(parent: Option<Module<'a>>,
kind: ModuleKind,
normal_ancestor_id: DefId,
+ expansion: Mark,
span: Span) -> Self {
ModuleData {
parent: parent,
traits: RefCell::new(None),
populated: Cell::new(normal_ancestor_id.is_local()),
span: span,
+ expansion: expansion,
}
}
_ => true,
}
}
+
+ fn is_macro_def(&self) -> bool {
+ match self.kind {
+ NameBindingKind::Def(Def::Macro(..)) => true,
+ _ => false,
+ }
+ }
+
+ fn descr(&self) -> &'static str {
+ if self.is_extern_crate() { "extern crate" } else { self.def().kind_name() }
+ }
}
/// Interns the names of the primitive types.
prelude: Option<Module<'a>>,
- trait_item_map: FxHashMap<(DefId, Name, Namespace), (Def, bool /* has self */)>,
+ // n.b. This is used only for better diagnostics, not name resolution itself.
+ has_self: FxHashSet<DefId>,
// Names of fields of an item `DefId` accessible with dot syntax.
// Used for hints during error reporting.
label_ribs: Vec<Rib<'a>>,
// The trait that the current context can refer to.
- current_trait_ref: Option<(DefId, TraitRef)>,
+ current_trait_ref: Option<(Module<'a>, TraitRef)>,
// The current self type if inside an impl (used for better errors).
current_self_type: Option<Ty>,
// entry block for `f`.
block_map: NodeMap<Module<'a>>,
module_map: FxHashMap<DefId, Module<'a>>,
- extern_crate_roots: FxHashMap<(CrateNum, bool /* MacrosOnly? */), Module<'a>>,
+ extern_module_map: FxHashMap<(DefId, bool /* MacrosOnly? */), Module<'a>>,
pub make_glob_map: bool,
// Maps imports to the names of items actually imported (this actually maps
use_extern_macros: bool, // true if `#![feature(use_extern_macros)]`
crate_loader: &'a mut CrateLoader,
- macro_names: FxHashSet<Name>,
+ macro_names: FxHashSet<Ident>,
global_macros: FxHashMap<Name, &'a NameBinding<'a>>,
- lexical_macro_resolutions: Vec<(Name, &'a Cell<LegacyScope<'a>>)>,
+ lexical_macro_resolutions: Vec<(Ident, &'a Cell<LegacyScope<'a>>)>,
macro_map: FxHashMap<DefId, Rc<SyntaxExtension>>,
macro_defs: FxHashMap<Mark, DefId>,
local_macro_def_scopes: FxHashMap<NodeId, Module<'a>>,
pub whitelisted_legacy_custom_derives: Vec<Name>,
pub found_unresolved_macro: bool,
+ // List of crate local macros that we need to warn about as being unused.
+ // Right now this only includes macro_rules! macros.
+ unused_macros: FxHashSet<DefId>,
+
// Maps the `Mark` of an expansion to its containing module or block.
invocations: FxHashMap<Mark, &'a InvocationData<'a>>,
let root_module_kind = ModuleKind::Def(Def::Mod(root_def_id), keywords::Invalid.name());
let graph_root = arenas.alloc_module(ModuleData {
no_implicit_prelude: attr::contains_name(&krate.attrs, "no_implicit_prelude"),
- ..ModuleData::new(None, root_module_kind, root_def_id, krate.span)
+ ..ModuleData::new(None, root_module_kind, root_def_id, Mark::root(), krate.span)
});
let mut module_map = FxHashMap();
module_map.insert(DefId::local(CRATE_DEF_INDEX), graph_root);
let mut definitions = Definitions::new();
- DefCollector::new(&mut definitions)
+ DefCollector::new(&mut definitions, Mark::root())
.collect_root(crate_name, &session.local_crate_disambiguator().as_str());
let mut invocations = FxHashMap();
graph_root: graph_root,
prelude: None,
- trait_item_map: FxHashMap(),
+ has_self: FxHashSet(),
field_names: FxHashMap(),
determined_imports: Vec::new(),
trait_map: NodeMap(),
module_map: module_map,
block_map: NodeMap(),
- extern_crate_roots: FxHashMap(),
+ extern_module_map: FxHashMap(),
make_glob_map: make_glob_map == MakeGlobMap::Yes,
glob_map: NodeMap(),
vis: ty::Visibility::Public,
}),
- // `#![feature(proc_macro)]` implies `#[feature(extern_macros)]`
- use_extern_macros: features.use_extern_macros || features.proc_macro,
+ // The `proc_macro` and `decl_macro` features imply `use_extern_macros`
+ use_extern_macros:
+ features.use_extern_macros || features.proc_macro || features.decl_macro,
crate_loader: crate_loader,
macro_names: FxHashSet(),
potentially_unused_imports: Vec::new(),
struct_constructors: DefIdMap(),
found_unresolved_macro: false,
+ unused_macros: FxHashSet(),
}
}
parent: Module<'a>,
kind: ModuleKind,
normal_ancestor_id: DefId,
+ expansion: Mark,
span: Span,
) -> Module<'a> {
- self.arenas.alloc_module(ModuleData::new(Some(parent), kind, normal_ancestor_id, span))
+ let module = ModuleData::new(Some(parent), kind, normal_ancestor_id, expansion, span);
+ self.arenas.alloc_module(module)
}
fn record_use(&mut self, ident: Ident, ns: Namespace, binding: &'a NameBinding<'a>, span: Span)
path_span: Span)
-> Option<LexicalScopeBinding<'a>> {
if ns == TypeNS {
- ident = ident.unhygienize();
+ ident.ctxt = if ident.name == keywords::SelfType.name() {
+ SyntaxContext::empty() // FIXME(jseyfried) improve `Self` hygiene
+ } else {
+ ident.ctxt.modern()
+ }
}
// Walk backwards up the ribs in scope.
+ let mut module = self.graph_root;
for i in (0 .. self.ribs[ns].len()).rev() {
if let Some(def) = self.ribs[ns][i].bindings.get(&ident).cloned() {
// The ident resolves to a type parameter or local variable.
));
}
- if let ModuleRibKind(module) = self.ribs[ns][i].kind {
- let item = self.resolve_ident_in_module(module, ident, ns, false,
- record_used, path_span);
- if let Ok(binding) = item {
- // The ident resolves to an item.
- return Some(LexicalScopeBinding::Item(binding));
+ module = match self.ribs[ns][i].kind {
+ ModuleRibKind(module) => module,
+ MacroDefinition(def) if def == self.macro_defs[&ident.ctxt.outer()] => {
+ // If an invocation of this macro created `ident`, give up on `ident`
+ // and switch to `ident`'s source from the macro definition.
+ ident.ctxt.remove_mark();
+ continue
}
+ _ => continue,
+ };
- if let ModuleKind::Block(..) = module.kind { // We can see through blocks
- } else if !module.no_implicit_prelude {
- return self.prelude.and_then(|prelude| {
- self.resolve_ident_in_module(prelude, ident, ns, false,
- false, path_span).ok()
- }).map(LexicalScopeBinding::Item)
- } else {
- return None;
- }
+ let item = self.resolve_ident_in_module_unadjusted(
+ module, ident, ns, false, record_used, path_span,
+ );
+ if let Ok(binding) = item {
+ // The ident resolves to an item.
+ return Some(LexicalScopeBinding::Item(binding));
}
- if let MacroDefinition(def) = self.ribs[ns][i].kind {
- // If an invocation of this macro created `ident`, give up on `ident`
- // and switch to `ident`'s source from the macro definition.
- let ctxt_data = ident.ctxt.data();
- if def == self.macro_defs[&ctxt_data.outer_mark] {
- ident.ctxt = ctxt_data.prev_ctxt;
- }
+ match module.kind {
+ ModuleKind::Block(..) => {}, // We can see through blocks
+ _ => break,
+ }
+ }
+
+ ident.ctxt = ident.ctxt.modern();
+ loop {
+ module = unwrap_or!(self.hygienic_lexical_parent(module, &mut ident.ctxt), break);
+ let orig_current_module = self.current_module;
+ self.current_module = module; // Lexical resolutions can never be a privacy error.
+ let result = self.resolve_ident_in_module_unadjusted(
+ module, ident, ns, false, record_used, path_span,
+ );
+ self.current_module = orig_current_module;
+
+ match result {
+ Ok(binding) => return Some(LexicalScopeBinding::Item(binding)),
+ Err(Undetermined) => return None,
+ Err(Determined) => {}
+ }
+ }
+
+ match self.prelude {
+ Some(prelude) if !module.no_implicit_prelude => {
+ self.resolve_ident_in_module_unadjusted(prelude, ident, ns, false, false, path_span)
+ .ok().map(LexicalScopeBinding::Item)
+ }
+ _ => None,
+ }
+ }
+
+ fn hygienic_lexical_parent(&mut self, mut module: Module<'a>, ctxt: &mut SyntaxContext)
+ -> Option<Module<'a>> {
+ if !module.expansion.is_descendant_of(ctxt.outer()) {
+ return Some(self.macro_def_scope(ctxt.remove_mark()));
+ }
+
+ if let ModuleKind::Block(..) = module.kind {
+ return Some(module.parent.unwrap());
+ }
+
+ let mut module_expansion = module.expansion.modern(); // for backward compatability
+ while let Some(parent) = module.parent {
+ let parent_expansion = parent.expansion.modern();
+ if module_expansion.is_descendant_of(parent_expansion) &&
+ parent_expansion != module_expansion {
+ return if parent_expansion.is_descendant_of(ctxt.outer()) {
+ Some(parent)
+ } else {
+ None
+ };
}
+ module = parent;
+ module_expansion = parent_expansion;
}
None
}
- fn resolve_crate_var(&mut self, crate_var_ctxt: SyntaxContext, span: Span) -> Module<'a> {
- let mut ctxt_data = crate_var_ctxt.data();
- while ctxt_data.prev_ctxt != SyntaxContext::empty() {
- ctxt_data = ctxt_data.prev_ctxt.data();
+ fn resolve_ident_in_module(&mut self,
+ module: Module<'a>,
+ mut ident: Ident,
+ ns: Namespace,
+ ignore_unresolved_invocations: bool,
+ record_used: bool,
+ span: Span)
+ -> Result<&'a NameBinding<'a>, Determinacy> {
+ ident.ctxt = ident.ctxt.modern();
+ let orig_current_module = self.current_module;
+ if let Some(def) = ident.ctxt.adjust(module.expansion) {
+ self.current_module = self.macro_def_scope(def);
+ }
+ let result = self.resolve_ident_in_module_unadjusted(
+ module, ident, ns, ignore_unresolved_invocations, record_used, span,
+ );
+ self.current_module = orig_current_module;
+ result
+ }
+
+ fn resolve_crate_root(&mut self, mut ctxt: SyntaxContext) -> Module<'a> {
+ let module = match ctxt.adjust(Mark::root()) {
+ Some(def) => self.macro_def_scope(def),
+ None => return self.graph_root,
+ };
+ self.get_module(DefId { index: CRATE_DEF_INDEX, ..module.normal_ancestor_id })
+ }
+
+ fn resolve_self(&mut self, ctxt: &mut SyntaxContext, module: Module<'a>) -> Module<'a> {
+ let mut module = self.get_module(module.normal_ancestor_id);
+ while module.span.ctxt.modern() != *ctxt {
+ let parent = module.parent.unwrap_or_else(|| self.macro_def_scope(ctxt.remove_mark()));
+ module = self.get_module(parent.normal_ancestor_id);
}
- let module = self.macro_def_scope(ctxt_data.outer_mark, span);
- if module.is_local() { self.graph_root } else { module }
+ module
}
// AST resolution
fn search_label(&self, mut ident: Ident) -> Option<Def> {
for rib in self.label_ribs.iter().rev() {
match rib.kind {
- NormalRibKind => {
- // Continue
- }
+ NormalRibKind => {}
+ // If an invocation of this macro created `ident`, give up on `ident`
+ // and switch to `ident`'s source from the macro definition.
MacroDefinition(def) => {
- // If an invocation of this macro created `ident`, give up on `ident`
- // and switch to `ident`'s source from the macro definition.
- let ctxt_data = ident.ctxt.data();
- if def == self.macro_defs[&ctxt_data.outer_mark] {
- ident.ctxt = ctxt_data.prev_ctxt;
+ if def == self.macro_defs[&ident.ctxt.outer()] {
+ ident.ctxt.remove_mark();
}
}
_ => {
this.check_proc_macro_attrs(&trait_item.attrs);
match trait_item.node {
- TraitItemKind::Const(_, ref default) => {
+ TraitItemKind::Const(ref ty, ref default) => {
+ this.visit_ty(ty);
+
// Only impose the restrictions of
- // ConstRibKind if there's an actual constant
+ // ConstRibKind for an actual constant
// expression in a provided default.
- if default.is_some() {
+ if let Some(ref expr) = *default{
this.with_constant_rib(|this| {
- visit::walk_trait_item(this, trait_item)
+ this.visit_expr(expr);
});
- } else {
- visit::walk_trait_item(this, trait_item)
}
}
TraitItemKind::Method(ref sig, _) => {
});
}
- ItemKind::Const(..) | ItemKind::Static(..) => {
- self.with_constant_rib(|this| {
- visit::walk_item(this, item);
+ ItemKind::Static(ref ty, _, ref expr) |
+ ItemKind::Const(ref ty, ref expr) => {
+ self.with_item_rib(|this| {
+ this.visit_ty(ty);
+ this.with_constant_rib(|this| {
+ this.visit_expr(expr);
+ });
});
}
let mut function_type_rib = Rib::new(rib_kind);
let mut seen_bindings = FxHashMap();
for type_parameter in &generics.ty_params {
- let name = type_parameter.ident.name;
+ let ident = type_parameter.ident.modern();
debug!("with_type_parameter_rib: {}", type_parameter.id);
- if seen_bindings.contains_key(&name) {
- let span = seen_bindings.get(&name).unwrap();
- resolve_error(self,
- type_parameter.span,
- ResolutionError::NameAlreadyUsedInTypeParameterList(name,
- span));
+ if seen_bindings.contains_key(&ident) {
+ let span = seen_bindings.get(&ident).unwrap();
+ let err =
+ ResolutionError::NameAlreadyUsedInTypeParameterList(ident.name, span);
+ resolve_error(self, type_parameter.span, err);
}
- seen_bindings.entry(name).or_insert(type_parameter.span);
+ seen_bindings.entry(ident).or_insert(type_parameter.span);
// plain insert (no renaming)
let def_id = self.definitions.local_def_id(type_parameter.id);
let def = Def::TyParam(def_id);
- function_type_rib.bindings.insert(Ident::with_empty_ctxt(name), def);
+ function_type_rib.bindings.insert(ident, def);
self.record_def(type_parameter.id, PathResolution::new(def));
}
self.ribs[TypeNS].push(function_type_rib);
self.label_ribs.pop();
}
+ fn with_item_rib<F>(&mut self, f: F)
+ where F: FnOnce(&mut Resolver)
+ {
+ self.ribs[ValueNS].push(Rib::new(ItemRibKind));
+ self.ribs[TypeNS].push(Rib::new(ItemRibKind));
+ f(self);
+ self.ribs[TypeNS].pop();
+ self.ribs[ValueNS].pop();
+ }
+
fn with_constant_rib<F>(&mut self, f: F)
where F: FnOnce(&mut Resolver)
{
self.ribs[ValueNS].push(Rib::new(ConstantItemRibKind));
- self.ribs[TypeNS].push(Rib::new(ConstantItemRibKind));
f(self);
- self.ribs[TypeNS].pop();
self.ribs[ValueNS].pop();
}
let mut new_val = None;
let mut new_id = None;
if let Some(trait_ref) = opt_trait_ref {
- let def = self.smart_resolve_path(trait_ref.ref_id, None,
- &trait_ref.path, PathSource::Trait).base_def();
+ let path: Vec<_> = trait_ref.path.segments.iter().map(|seg| seg.identifier).collect();
+ let def = self.smart_resolve_path_fragment(trait_ref.ref_id,
+ None,
+ &path,
+ trait_ref.path.span,
+ trait_ref.path.segments.last().unwrap().span,
+ PathSource::Trait)
+ .base_def();
if def != Def::Err {
- new_val = Some((def.def_id(), trait_ref.clone()));
new_id = Some(def.def_id());
+ let span = trait_ref.path.span;
+ if let PathResult::Module(module) = self.resolve_path(&path, None, false, span) {
+ new_val = Some((module, trait_ref.clone()));
+ }
}
}
let original_trait_ref = replace(&mut self.current_trait_ref, new_val);
ImplItemKind::Const(..) => {
// If this is a trait impl, ensure the const
// exists in trait
- this.check_trait_item(impl_item.ident.name,
+ this.check_trait_item(impl_item.ident,
ValueNS,
impl_item.span,
|n, s| ResolutionError::ConstNotMemberOfTrait(n, s));
ImplItemKind::Method(ref sig, _) => {
// If this is a trait impl, ensure the method
// exists in trait
- this.check_trait_item(impl_item.ident.name,
+ this.check_trait_item(impl_item.ident,
ValueNS,
impl_item.span,
|n, s| ResolutionError::MethodNotMemberOfTrait(n, s));
ImplItemKind::Type(ref ty) => {
// If this is a trait impl, ensure the type
// exists in trait
- this.check_trait_item(impl_item.ident.name,
+ this.check_trait_item(impl_item.ident,
TypeNS,
impl_item.span,
|n, s| ResolutionError::TypeNotMemberOfTrait(n, s));
});
}
- fn check_trait_item<F>(&self, name: Name, ns: Namespace, span: Span, err: F)
+ fn check_trait_item<F>(&mut self, ident: Ident, ns: Namespace, span: Span, err: F)
where F: FnOnce(Name, &str) -> ResolutionError
{
// If there is a TraitRef in scope for an impl, then the method must be in the
// trait.
- if let Some((did, ref trait_ref)) = self.current_trait_ref {
- if !self.trait_item_map.contains_key(&(did, name, ns)) {
- let path_str = path_names_to_string(&trait_ref.path);
- resolve_error(self, span, err(name, &path_str));
+ if let Some((module, _)) = self.current_trait_ref {
+ if self.resolve_ident_in_module(module, ident, ns, false, false, span).is_err() {
+ let path = &self.current_trait_ref.as_ref().unwrap().1.path;
+ resolve_error(self, span, err(ident.name, &path_names_to_string(path)));
}
}
}
}
// Try to lookup the name in more relaxed fashion for better error reporting.
- let name = path.last().unwrap().name;
- let candidates = this.lookup_import_candidates(name, ns, is_expected);
+ let ident = *path.last().unwrap();
+ let candidates = this.lookup_import_candidates(ident.name, ns, is_expected);
if !candidates.is_empty() {
let mut module_span = this.current_module.span;
module_span.hi = module_span.lo;
// Report import candidates as help and proceed searching for labels.
show_candidates(&mut err, module_span, &candidates, def.is_some());
} else if is_expected(Def::Enum(DefId::local(CRATE_DEF_INDEX))) {
- let enum_candidates = this.lookup_import_candidates(name, ns, is_enum_variant);
+ let enum_candidates =
+ this.lookup_import_candidates(ident.name, ns, is_enum_variant);
let mut enum_candidates = enum_candidates.iter()
.map(|suggestion| import_candidate_to_paths(&suggestion)).collect::<Vec<_>>();
enum_candidates.sort();
}
}
if path.len() == 1 && this.self_type_is_available(span) {
- if let Some(candidate) = this.lookup_assoc_candidate(name, ns, is_expected) {
+ if let Some(candidate) = this.lookup_assoc_candidate(ident, ns, is_expected) {
let self_is_available = this.self_value_is_available(path[0].ctxt, span);
match candidate {
AssocSuggestion::Field => {
// or `<T>::A::B`. If `B` should be resolved in value namespace then
// it needs to be added to the trait map.
if ns == ValueNS {
- let item_name = path.last().unwrap().name;
+ let item_name = *path.last().unwrap();
let traits = self.get_traits_containing_item(item_name, ns);
self.trait_map.insert(id, traits);
}
}
let is_global = self.global_macros.get(&path[0].name).cloned()
.map(|binding| binding.get_macro(self).kind() == MacroKind::Bang).unwrap_or(false);
- if primary_ns != MacroNS && (is_global || self.macro_names.contains(&path[0].name)) {
+ if primary_ns != MacroNS && (is_global || self.macro_names.contains(&path[0].modern())) {
// Return some dummy definition, it's enough for error reporting.
return Some(
PathResolution::new(Def::Macro(DefId::local(CRATE_DEF_INDEX), MacroKind::Bang))
let ns = if is_last { opt_ns.unwrap_or(TypeNS) } else { TypeNS };
if i == 0 && ns == TypeNS && ident.name == keywords::SelfValue.name() {
- module = Some(self.module_map[&self.current_module.normal_ancestor_id]);
+ let mut ctxt = ident.ctxt.modern();
+ module = Some(self.resolve_self(&mut ctxt, self.current_module));
continue
} else if allow_super && ns == TypeNS && ident.name == keywords::Super.name() {
- let current_module = if i == 0 { self.current_module } else { module.unwrap() };
- let self_module = self.module_map[¤t_module.normal_ancestor_id];
+ let mut ctxt = ident.ctxt.modern();
+ let self_module = match i {
+ 0 => self.resolve_self(&mut ctxt, self.current_module),
+ _ => module.unwrap(),
+ };
if let Some(parent) = self_module.parent {
- module = Some(self.module_map[&parent.normal_ancestor_id]);
+ module = Some(self.resolve_self(&mut ctxt, parent));
continue
} else {
let msg = "There are too many initial `super`s.".to_string();
allow_super = false;
if i == 0 && ns == TypeNS && ident.name == keywords::CrateRoot.name() {
- module = Some(self.graph_root);
+ module = Some(self.resolve_crate_root(ident.ctxt.modern()));
continue
} else if i == 0 && ns == TypeNS && ident.name == "$crate" {
- module = Some(self.resolve_crate_var(ident.ctxt, path_span));
+ module = Some(self.resolve_crate_root(ident.ctxt));
continue
}
for rib in ribs {
match rib.kind {
NormalRibKind | MethodRibKind(_) | ClosureRibKind(..) |
- ModuleRibKind(..) | MacroDefinition(..) | ForwardTyParamBanRibKind => {
+ ModuleRibKind(..) | MacroDefinition(..) | ForwardTyParamBanRibKind |
+ ConstantItemRibKind => {
// Nothing to do. Continue.
}
ItemRibKind => {
}
return Def::Err;
}
- ConstantItemRibKind => {
- // see #9186
- if record_used {
- resolve_error(self, span,
- ResolutionError::OuterTypeParameterContext);
- }
- return Def::Err;
- }
}
}
}
}
fn lookup_assoc_candidate<FilterFn>(&mut self,
- name: Name,
+ ident: Ident,
ns: Namespace,
filter_fn: FilterFn)
-> Option<AssocSuggestion>
Def::Struct(did) | Def::Union(did)
if resolution.unresolved_segments() == 0 => {
if let Some(field_names) = self.field_names.get(&did) {
- if field_names.iter().any(|&field_name| name == field_name) {
+ if field_names.iter().any(|&field_name| ident.name == field_name) {
return Some(AssocSuggestion::Field);
}
}
}
// Look for associated items in the current trait.
- if let Some((trait_did, _)) = self.current_trait_ref {
- if let Some(&(def, has_self)) = self.trait_item_map.get(&(trait_did, name, ns)) {
+ if let Some((module, _)) = self.current_trait_ref {
+ if let Ok(binding) =
+ self.resolve_ident_in_module(module, ident, ns, false, false, module.span) {
+ let def = binding.def();
if filter_fn(def) {
- return Some(if has_self {
+ return Some(if self.has_self.contains(&def.def_id()) {
AssocSuggestion::MethodWithSelf
} else {
AssocSuggestion::AssocItem
// field, we need to add any trait methods we find that match
// the field name so that we can do some nice error reporting
// later on in typeck.
- let traits = self.get_traits_containing_item(name.node.name, ValueNS);
+ let traits = self.get_traits_containing_item(name.node, ValueNS);
self.trait_map.insert(expr.id, traits);
}
ExprKind::MethodCall(name, ..) => {
debug!("(recording candidate traits for expr) recording traits for {}",
expr.id);
- let traits = self.get_traits_containing_item(name.node.name, ValueNS);
+ let traits = self.get_traits_containing_item(name.node, ValueNS);
self.trait_map.insert(expr.id, traits);
}
_ => {
}
}
- fn get_traits_containing_item(&mut self, name: Name, ns: Namespace) -> Vec<TraitCandidate> {
- debug!("(getting traits containing item) looking for '{}'", name);
+ fn get_traits_containing_item(&mut self, mut ident: Ident, ns: Namespace)
+ -> Vec<TraitCandidate> {
+ debug!("(getting traits containing item) looking for '{}'", ident.name);
let mut found_traits = Vec::new();
// Look for the current trait.
- if let Some((trait_def_id, _)) = self.current_trait_ref {
- if self.trait_item_map.contains_key(&(trait_def_id, name, ns)) {
- found_traits.push(TraitCandidate { def_id: trait_def_id, import_id: None });
+ if let Some((module, _)) = self.current_trait_ref {
+ if self.resolve_ident_in_module(module, ident, ns, false, false, module.span).is_ok() {
+ let def_id = module.def_id().unwrap();
+ found_traits.push(TraitCandidate { def_id: def_id, import_id: None });
}
}
+ ident.ctxt = ident.ctxt.modern();
let mut search_module = self.current_module;
loop {
- self.get_traits_in_module_containing_item(name, ns, search_module, &mut found_traits);
- match search_module.kind {
- ModuleKind::Block(..) => search_module = search_module.parent.unwrap(),
- _ => break,
- }
+ self.get_traits_in_module_containing_item(ident, ns, search_module, &mut found_traits);
+ search_module =
+ unwrap_or!(self.hygienic_lexical_parent(search_module, &mut ident.ctxt), break);
}
if let Some(prelude) = self.prelude {
if !search_module.no_implicit_prelude {
- self.get_traits_in_module_containing_item(name, ns, prelude, &mut found_traits);
+ self.get_traits_in_module_containing_item(ident, ns, prelude, &mut found_traits);
}
}
}
fn get_traits_in_module_containing_item(&mut self,
- name: Name,
+ ident: Ident,
ns: Namespace,
- module: Module,
+ module: Module<'a>,
found_traits: &mut Vec<TraitCandidate>) {
let mut traits = module.traits.borrow_mut();
if traits.is_none() {
}
for &(trait_name, binding) in traits.as_ref().unwrap().iter() {
- let trait_def_id = binding.def().def_id();
- if self.trait_item_map.contains_key(&(trait_def_id, name, ns)) {
+ let module = binding.module().unwrap();
+ let mut ident = ident;
+ if ident.ctxt.glob_adjust(module.expansion, binding.span.ctxt.modern()).is_none() {
+ continue
+ }
+ if self.resolve_ident_in_module_unadjusted(module, ident, ns, false, false, module.span)
+ .is_ok() {
let import_id = match binding.kind {
NameBindingKind::Import { directive, .. } => {
self.maybe_unused_trait_imports.insert(directive.id);
}
_ => None,
};
+ let trait_def_id = module.def_id().unwrap();
found_traits.push(TraitCandidate { def_id: trait_def_id, import_id: import_id });
}
}
for &PrivacyError(span, name, binding) in &self.privacy_errors {
if !reported_spans.insert(span) { continue }
- if binding.is_extern_crate() {
- // Warn when using an inaccessible extern crate.
- let node_id = match binding.kind {
- NameBindingKind::Import { directive, .. } => directive.id,
- _ => unreachable!(),
- };
- let msg = format!("extern crate `{}` is private", name);
- self.session.add_lint(lint::builtin::INACCESSIBLE_EXTERN_CRATE, node_id, span, msg);
- } else {
- let def = binding.def();
- self.session.span_err(span, &format!("{} `{}` is private", def.kind_name(), name));
- }
+ span_err!(self.session, span, E0603, "{} `{}` is private", binding.descr(), name);
}
}
fn report_shadowing_errors(&mut self) {
- for (name, scope) in replace(&mut self.lexical_macro_resolutions, Vec::new()) {
- self.resolve_legacy_scope(scope, name, true);
+ for (ident, scope) in replace(&mut self.lexical_macro_resolutions, Vec::new()) {
+ self.resolve_legacy_scope(scope, ident, true);
}
let mut reported_errors = FxHashSet();
for binding in replace(&mut self.disallowed_shadowing, Vec::new()) {
- if self.resolve_legacy_scope(&binding.parent, binding.name, false).is_some() &&
- reported_errors.insert((binding.name, binding.span)) {
- let msg = format!("`{}` is already in scope", binding.name);
+ if self.resolve_legacy_scope(&binding.parent, binding.ident, false).is_some() &&
+ reported_errors.insert((binding.ident, binding.span)) {
+ let msg = format!("`{}` is already in scope", binding.ident);
self.session.struct_span_err(binding.span, &msg)
.note("macro-expanded `macro_rules!`s may not shadow \
existing macros (see RFC 1560)")
projects / rust.git / blobdiff