Rollup merge of #71555 - cjgillot:nameless, r=matthewjasper

Remove ast::{Ident, Name} reexports.

The reexport of `Symbol` into `Name` confused me.

Author: RalfJung

Cargo.lock

@@ -4226,7 +4226,6 @@ name = "rustc_privacy"
 version = "0.0.0"
 dependencies = [
  "log",
- "rustc_ast",
  "rustc_attr",
  "rustc_data_structures",
  "rustc_errors",

src/librustc_ast/ast.rs

@@ -22,8 +22,6 @@ pub use crate::util::parser::ExprPrecedence;
 pub use GenericArgs::*;
 pub use UnsafeSource::*;
 
-pub use rustc_span::symbol::{Ident, Symbol as Name};
-
 use crate::ptr::P;
 use crate::token::{self, DelimToken};
 use crate::tokenstream::{DelimSpan, TokenStream, TokenTree};
@@ -34,7 +32,7 @@ use rustc_data_structures::thin_vec::ThinVec;
 use rustc_macros::HashStable_Generic;
 use rustc_serialize::{self, Decoder, Encoder};
 use rustc_span::source_map::{respan, Spanned};
-use rustc_span::symbol::{kw, sym, Symbol};
+use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::{Span, DUMMY_SP};
 
 use std::convert::TryFrom;
@@ -2451,7 +2449,7 @@ pub enum ItemKind {
     /// An `extern crate` item, with the optional *original* crate name if the crate was renamed.
     ///
     /// E.g., `extern crate foo` or `extern crate foo_bar as foo`.
-    ExternCrate(Option<Name>),
+    ExternCrate(Option<Symbol>),
     /// A use declaration item (`use`).
     ///
     /// E.g., `use foo;`, `use foo::bar;` or `use foo::bar as FooBar;`.

src/librustc_ast/attr/mod.rs

@@ -3,8 +3,8 @@
 use crate::ast;
 use crate::ast::{AttrId, AttrItem, AttrKind, AttrStyle, AttrVec, Attribute};
 use crate::ast::{Expr, GenericParam, Item, Lit, LitKind, Local, Stmt, StmtKind};
-use crate::ast::{Ident, Name, Path, PathSegment};
 use crate::ast::{MacArgs, MacDelimiter, MetaItem, MetaItemKind, NestedMetaItem};
+use crate::ast::{Path, PathSegment};
 use crate::mut_visit::visit_clobber;
 use crate::ptr::P;
 use crate::token::{self, Token};
@@ -14,7 +14,7 @@ use rustc_data_structures::sync::Lock;
 use rustc_index::bit_set::GrowableBitSet;
 use rustc_span::edition::{Edition, DEFAULT_EDITION};
 use rustc_span::source_map::{BytePos, Spanned};
-use rustc_span::symbol::{sym, Symbol};
+use rustc_span::symbol::{sym, Ident, Symbol};
 use rustc_span::Span;
 
 use log::debug;
@@ -113,7 +113,7 @@ impl NestedMetaItem {
     }
 
     /// Returns a name and single literal value tuple of the `MetaItem`.
-    pub fn name_value_literal(&self) -> Option<(Name, &Lit)> {
+    pub fn name_value_literal(&self) -> Option<(Symbol, &Lit)> {
         self.meta_item().and_then(|meta_item| {
             meta_item.meta_item_list().and_then(|meta_item_list| {
                 if meta_item_list.len() == 1 {

src/librustc_ast/mut_visit.rs

@@ -15,6 +15,7 @@ use crate::tokenstream::*;
 use rustc_data_structures::map_in_place::MapInPlace;
 use rustc_data_structures::sync::Lrc;
 use rustc_span::source_map::{respan, Spanned};
+use rustc_span::symbol::Ident;
 use rustc_span::Span;
 
 use smallvec::{smallvec, Array, SmallVec};

src/librustc_ast/token.rs

@@ -12,7 +12,7 @@ use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
 use rustc_data_structures::sync::Lrc;
 use rustc_macros::HashStable_Generic;
 use rustc_span::symbol::kw;
-use rustc_span::symbol::Symbol;
+use rustc_span::symbol::{Ident, Symbol};
 use rustc_span::{self, Span, DUMMY_SP};
 use std::borrow::Cow;
 use std::{fmt, mem};
@@ -145,7 +145,7 @@ impl Lit {
     }
 }
 
-pub fn ident_can_begin_expr(name: ast::Name, span: Span, is_raw: bool) -> bool {
+pub fn ident_can_begin_expr(name: Symbol, span: Span, is_raw: bool) -> bool {
     let ident_token = Token::new(Ident(name, is_raw), span);
 
     !ident_token.is_reserved_ident()
@@ -173,7 +173,7 @@ pub fn ident_can_begin_expr(name: ast::Name, span: Span, is_raw: bool) -> bool {
         .contains(&name)
 }
 
-fn ident_can_begin_type(name: ast::Name, span: Span, is_raw: bool) -> bool {
+fn ident_can_begin_type(name: Symbol, span: Span, is_raw: bool) -> bool {
     let ident_token = Token::new(Ident(name, is_raw), span);
 
     !ident_token.is_reserved_ident()
@@ -229,18 +229,18 @@ pub enum TokenKind {
     /// Do not forget about `NtIdent` when you want to match on identifiers.
     /// It's recommended to use `Token::(ident,uninterpolate,uninterpolated_span)` to
     /// treat regular and interpolated identifiers in the same way.
-    Ident(ast::Name, /* is_raw */ bool),
+    Ident(Symbol, /* is_raw */ bool),
     /// Lifetime identifier token.
     /// Do not forget about `NtLifetime` when you want to match on lifetime identifiers.
     /// It's recommended to use `Token::(lifetime,uninterpolate,uninterpolated_span)` to
     /// treat regular and interpolated lifetime identifiers in the same way.
-    Lifetime(ast::Name),
+    Lifetime(Symbol),
 
     Interpolated(Lrc<Nonterminal>),
 
     // Can be expanded into several tokens.
     /// A doc comment.
-    DocComment(ast::Name),
+    DocComment(Symbol),
 
     // Junk. These carry no data because we don't really care about the data
     // they *would* carry, and don't really want to allocate a new ident for
@@ -249,9 +249,9 @@ pub enum TokenKind {
     Whitespace,
     /// A comment.
     Comment,
-    Shebang(ast::Name),
+    Shebang(Symbol),
     /// A completely invalid token which should be skipped.
-    Unknown(ast::Name),
+    Unknown(Symbol),
 
     Eof,
 }
@@ -325,8 +325,8 @@ impl Token {
         Token::new(TokenKind::Whitespace, DUMMY_SP)
     }
 
-    /// Recovers a `Token` from an `ast::Ident`. This creates a raw identifier if necessary.
-    pub fn from_ast_ident(ident: ast::Ident) -> Self {
+    /// Recovers a `Token` from an `Ident`. This creates a raw identifier if necessary.
+    pub fn from_ast_ident(ident: Ident) -> Self {
         Token::new(Ident(ident.name, ident.is_raw_guess()), ident.span)
     }
 
@@ -488,19 +488,19 @@ impl Token {
     }
 
     /// Returns an identifier if this token is an identifier.
-    pub fn ident(&self) -> Option<(ast::Ident, /* is_raw */ bool)> {
+    pub fn ident(&self) -> Option<(Ident, /* is_raw */ bool)> {
         let token = self.uninterpolate();
         match token.kind {
-            Ident(name, is_raw) => Some((ast::Ident::new(name, token.span), is_raw)),
+            Ident(name, is_raw) => Some((Ident::new(name, token.span), is_raw)),
             _ => None,
         }
     }
 
     /// Returns a lifetime identifier if this token is a lifetime.
-    pub fn lifetime(&self) -> Option<ast::Ident> {
+    pub fn lifetime(&self) -> Option<Ident> {
         let token = self.uninterpolate();
         match token.kind {
-            Lifetime(name) => Some(ast::Ident::new(name, token.span)),
+            Lifetime(name) => Some(Ident::new(name, token.span)),
             _ => None,
         }
     }
@@ -577,28 +577,28 @@ impl Token {
     }
 
     pub fn is_path_segment_keyword(&self) -> bool {
-        self.is_non_raw_ident_where(ast::Ident::is_path_segment_keyword)
+        self.is_non_raw_ident_where(Ident::is_path_segment_keyword)
     }
 
     // Returns true for reserved identifiers used internally for elided lifetimes,
     // unnamed method parameters, crate root module, error recovery etc.
     pub fn is_special_ident(&self) -> bool {
-        self.is_non_raw_ident_where(ast::Ident::is_special)
+        self.is_non_raw_ident_where(Ident::is_special)
     }
 
     /// Returns `true` if the token is a keyword used in the language.
     pub fn is_used_keyword(&self) -> bool {
-        self.is_non_raw_ident_where(ast::Ident::is_used_keyword)
+        self.is_non_raw_ident_where(Ident::is_used_keyword)
     }
 
     /// Returns `true` if the token is a keyword reserved for possible future use.
     pub fn is_unused_keyword(&self) -> bool {
-        self.is_non_raw_ident_where(ast::Ident::is_unused_keyword)
+        self.is_non_raw_ident_where(Ident::is_unused_keyword)
     }
 
     /// Returns `true` if the token is either a special identifier or a keyword.
     pub fn is_reserved_ident(&self) -> bool {
-        self.is_non_raw_ident_where(ast::Ident::is_reserved)
+        self.is_non_raw_ident_where(Ident::is_reserved)
     }
 
     /// Returns `true` if the token is the identifier `true` or `false`.
@@ -607,7 +607,7 @@ impl Token {
     }
 
     /// Returns `true` if the token is a non-raw identifier for which `pred` holds.
-    pub fn is_non_raw_ident_where(&self, pred: impl FnOnce(ast::Ident) -> bool) -> bool {
+    pub fn is_non_raw_ident_where(&self, pred: impl FnOnce(Ident) -> bool) -> bool {
         match self.ident() {
             Some((id, false)) => pred(id),
             _ => false,
@@ -746,8 +746,8 @@ pub enum Nonterminal {
     NtPat(P<ast::Pat>),
     NtExpr(P<ast::Expr>),
     NtTy(P<ast::Ty>),
-    NtIdent(ast::Ident, /* is_raw */ bool),
-    NtLifetime(ast::Ident),
+    NtIdent(Ident, /* is_raw */ bool),
+    NtLifetime(Ident),
     NtLiteral(P<ast::Expr>),
     /// Stuff inside brackets for attributes
     NtMeta(P<ast::AttrItem>),

src/librustc_ast/visit.rs

@@ -17,6 +17,7 @@ use crate::ast::*;
 use crate::token::Token;
 use crate::tokenstream::{TokenStream, TokenTree};
 
+use rustc_span::symbol::{Ident, Symbol};
 use rustc_span::Span;
 
 #[derive(Copy, Clone, PartialEq)]
@@ -74,7 +75,7 @@ impl<'a> FnKind<'a> {
 /// to monitor future changes to `Visitor` in case a new method with a
 /// new default implementation gets introduced.)
 pub trait Visitor<'ast>: Sized {
-    fn visit_name(&mut self, _span: Span, _name: Name) {
+    fn visit_name(&mut self, _span: Span, _name: Symbol) {
         // Nothing to do.
     }
     fn visit_ident(&mut self, ident: Ident) {

src/librustc_ast_lowering/expr.rs

@@ -9,7 +9,7 @@ use rustc_errors::struct_span_err;
 use rustc_hir as hir;
 use rustc_hir::def::Res;
 use rustc_span::source_map::{respan, DesugaringKind, Span, Spanned};
-use rustc_span::symbol::{sym, Symbol};
+use rustc_span::symbol::{sym, Ident, Symbol};
 
 impl<'hir> LoweringContext<'_, 'hir> {
     fn lower_exprs(&mut self, exprs: &[AstP<Expr>]) -> &'hir [hir::Expr<'hir>] {

src/librustc_ast_lowering/item.rs

@@ -12,7 +12,7 @@ use rustc_hir as hir;
 use rustc_hir::def::{DefKind, Res};
 use rustc_hir::def_id::LocalDefId;
 use rustc_span::source_map::{respan, DesugaringKind};
-use rustc_span::symbol::{kw, sym};
+use rustc_span::symbol::{kw, sym, Ident};
 use rustc_span::Span;
 use rustc_target::spec::abi;
 

src/librustc_ast_lowering/lib.rs

@@ -63,7 +63,7 @@ use rustc_session::parse::ParseSess;
 use rustc_session::Session;
 use rustc_span::hygiene::ExpnId;
 use rustc_span::source_map::{respan, DesugaringKind, ExpnData, ExpnKind};
-use rustc_span::symbol::{kw, sym, Symbol};
+use rustc_span::symbol::{kw, sym, Ident, Symbol};
 use rustc_span::Span;
 
 use log::{debug, trace};

src/librustc_ast_lowering/pat.rs

@@ -5,6 +5,7 @@ use rustc_ast::ptr::P;
 use rustc_data_structures::stack::ensure_sufficient_stack;
 use rustc_hir as hir;
 use rustc_hir::def::Res;
+use rustc_span::symbol::Ident;
 use rustc_span::{source_map::Spanned, Span};
 
 impl<'a, 'hir> LoweringContext<'a, 'hir> {

src/librustc_ast_lowering/path.rs

@@ -9,6 +9,7 @@ use rustc_hir::def_id::DefId;
 use rustc_hir::GenericArg;
 use rustc_session::lint::builtin::ELIDED_LIFETIMES_IN_PATHS;
 use rustc_session::lint::BuiltinLintDiagnostics;
+use rustc_span::symbol::Ident;
 use rustc_span::Span;
 
 use log::debug;

src/librustc_ast_passes/ast_validation.rs

@@ -20,7 +20,7 @@ use rustc_parse::validate_attr;
 use rustc_session::lint::builtin::PATTERNS_IN_FNS_WITHOUT_BODY;
 use rustc_session::lint::LintBuffer;
 use rustc_session::Session;
-use rustc_span::symbol::{kw, sym};
+use rustc_span::symbol::{kw, sym, Ident};
 use rustc_span::Span;
 use std::mem;
 use std::ops::DerefMut;

src/librustc_ast_passes/feature_gate.rs

@@ -7,7 +7,7 @@ use rustc_feature::{AttributeGate, BUILTIN_ATTRIBUTE_MAP};
 use rustc_feature::{Features, GateIssue, UnstableFeatures};
 use rustc_session::parse::{feature_err, feature_err_issue, ParseSess};
 use rustc_span::source_map::Spanned;
-use rustc_span::symbol::sym;
+use rustc_span::symbol::{sym, Symbol};
 use rustc_span::Span;
 
 use log::debug;
@@ -252,7 +252,7 @@ impl<'a> Visitor<'a> for PostExpansionVisitor<'a> {
         }
     }
 
-    fn visit_name(&mut self, sp: Span, name: ast::Name) {
+    fn visit_name(&mut self, sp: Span, name: Symbol) {
         if !name.as_str().is_ascii() {
             gate_feature_post!(
                 &self,

src/librustc_ast_passes/node_count.rs

@@ -2,6 +2,7 @@
 
 use rustc_ast::ast::*;
 use rustc_ast::visit::*;
+use rustc_span::symbol::Ident;
 use rustc_span::Span;
 
 pub struct NodeCounter {