use crate::maybe_whole;
+use rustc_ast::ast::{self, AttrStyle, AttrVec, Attribute, Ident, DUMMY_NODE_ID};
+use rustc_ast::ast::{AssocItem, AssocItemKind, ForeignItemKind, Item, ItemKind};
+use rustc_ast::ast::{
+ Async, Const, Defaultness, IsAuto, PathSegment, Unsafe, UseTree, UseTreeKind,
+};
+use rustc_ast::ast::{
+ BindingMode, Block, FnDecl, FnSig, Mac, MacArgs, MacDelimiter, Param, SelfKind,
+};
+use rustc_ast::ast::{EnumDef, Generics, StructField, TraitRef, Ty, TyKind, Variant, VariantData};
+use rustc_ast::ast::{FnHeader, ForeignItem, Mutability, Visibility, VisibilityKind};
+use rustc_ast::ptr::P;
+use rustc_ast::token;
+use rustc_ast::tokenstream::{DelimSpan, TokenStream, TokenTree};
use rustc_ast_pretty::pprust;
use rustc_errors::{struct_span_err, Applicability, PResult, StashKey};
+use rustc_span::edition::Edition;
use rustc_span::source_map::{self, Span};
use rustc_span::symbol::{kw, sym, Symbol};
-use syntax::ast::{self, AttrStyle, AttrVec, Attribute, Ident, DUMMY_NODE_ID};
-use syntax::ast::{AssocItem, AssocItemKind, ForeignItemKind, Item, ItemKind};
-use syntax::ast::{Async, Const, Defaultness, IsAuto, PathSegment, Unsafe, UseTree, UseTreeKind};
-use syntax::ast::{BindingMode, Block, FnDecl, FnSig, Mac, MacArgs, MacDelimiter, Param, SelfKind};
-use syntax::ast::{EnumDef, Generics, StructField, TraitRef, Ty, TyKind, Variant, VariantData};
-use syntax::ast::{FnHeader, ForeignItem, Mutability, Visibility, VisibilityKind};
-use syntax::ptr::P;
-use syntax::token;
-use syntax::tokenstream::{DelimSpan, TokenStream, TokenTree};
use log::debug;
+use std::convert::TryFrom;
use std::mem;
pub(super) type ItemInfo = (Ident, ItemKind);
}
pub fn parse_trait_item(&mut self) -> PResult<'a, Option<Option<P<AssocItem>>>> {
- self.parse_assoc_item(|t| t.span.rust_2018())
+ self.parse_assoc_item(|edition| edition >= Edition::Edition2018)
}
/// Parses associated items.
fn parse_assoc_item(&mut self, req_name: ReqName) -> PResult<'a, Option<Option<P<AssocItem>>>> {
Ok(self.parse_item_(req_name)?.map(|Item { attrs, id, span, vis, ident, kind, tokens }| {
- let kind = match kind {
- ItemKind::Mac(a) => AssocItemKind::Macro(a),
- ItemKind::Fn(a, b, c, d) => AssocItemKind::Fn(a, b, c, d),
- ItemKind::TyAlias(a, b, c, d) => AssocItemKind::TyAlias(a, b, c, d),
- ItemKind::Const(a, b, c) => AssocItemKind::Const(a, b, c),
- ItemKind::Static(a, _, b) => {
- self.struct_span_err(span, "associated `static` items are not allowed").emit();
- AssocItemKind::Const(Defaultness::Final, a, b)
- }
- _ => return self.error_bad_item_kind(span, &kind, "`trait`s or `impl`s"),
+ let kind = match AssocItemKind::try_from(kind) {
+ Ok(kind) => kind,
+ Err(kind) => match kind {
+ ItemKind::Static(a, _, b) => {
+ self.struct_span_err(span, "associated `static` items are not allowed")
+ .emit();
+ AssocItemKind::Const(Defaultness::Final, a, b)
+ }
+ _ => return self.error_bad_item_kind(span, &kind, "`trait`s or `impl`s"),
+ },
};
Some(P(Item { attrs, id, span, vis, ident, kind, tokens }))
}))
}
fn parse_ident_or_underscore(&mut self) -> PResult<'a, ast::Ident> {
- match self.token.kind {
+ match self.normalized_token.kind {
token::Ident(name @ kw::Underscore, false) => {
- let span = self.token.span;
self.bump();
- Ok(Ident::new(name, span))
+ Ok(Ident::new(name, self.normalized_prev_token.span))
}
_ => self.parse_ident(),
}
/// Parses a foreign item (one in an `extern { ... }` block).
pub fn parse_foreign_item(&mut self) -> PResult<'a, Option<Option<P<ForeignItem>>>> {
Ok(self.parse_item_(|_| true)?.map(|Item { attrs, id, span, vis, ident, kind, tokens }| {
- let kind = match kind {
- ItemKind::Mac(a) => ForeignItemKind::Macro(a),
- ItemKind::Fn(a, b, c, d) => ForeignItemKind::Fn(a, b, c, d),
- ItemKind::TyAlias(a, b, c, d) => ForeignItemKind::TyAlias(a, b, c, d),
- ItemKind::Static(a, b, c) => ForeignItemKind::Static(a, b, c),
- ItemKind::Const(_, a, b) => {
- self.error_on_foreign_const(span, ident);
- ForeignItemKind::Static(a, Mutability::Not, b)
- }
- _ => return self.error_bad_item_kind(span, &kind, "`extern` blocks"),
+ let kind = match ForeignItemKind::try_from(kind) {
+ Ok(kind) => kind,
+ Err(kind) => match kind {
+ ItemKind::Const(_, a, b) => {
+ self.error_on_foreign_const(span, ident);
+ ForeignItemKind::Static(a, Mutability::Not, b)
+ }
+ _ => return self.error_bad_item_kind(span, &kind, "`extern` blocks"),
+ },
};
Some(P(Item { attrs, id, span, vis, ident, kind, tokens }))
}))
let comma_after_doc_seen = self.eat(&token::Comma);
// `seen_comma` is always false, because we are inside doc block
// condition is here to make code more readable
- if seen_comma == false && comma_after_doc_seen == true {
+ if !seen_comma && comma_after_doc_seen {
seen_comma = true;
}
if comma_after_doc_seen || self.token == token::CloseDelim(token::Brace) {
err.emit();
} else {
- if seen_comma == false {
+ if !seen_comma {
let sp = self.sess.source_map().next_point(previous_span);
err.span_suggestion(
sp,
/// The parsing configuration used to parse a parameter list (see `parse_fn_params`).
///
/// The function decides if, per-parameter `p`, `p` must have a pattern or just a type.
-type ReqName = fn(&token::Token) -> bool;
+type ReqName = fn(Edition) -> bool;
/// Parsing of functions and methods.
impl<'a> Parser<'a> {
let is_name_required = match self.token.kind {
token::DotDotDot => false,
- _ => req_name(&self.token),
+ _ => req_name(self.normalized_token.span.edition()),
};
let (pat, ty) = if is_name_required || self.is_named_param() {
debug!("parse_param_general parse_pat (is_name_required:{})", is_name_required);
fn parse_self_param(&mut self) -> PResult<'a, Option<Param>> {
// Extract an identifier *after* having confirmed that the token is one.
let expect_self_ident = |this: &mut Self| {
- match this.token.kind {
+ match this.normalized_token.kind {
// Preserve hygienic context.
token::Ident(name, _) => {
- let span = this.token.span;
this.bump();
- Ident::new(name, span)
+ Ident::new(name, this.normalized_prev_token.span)
}
_ => unreachable!(),
}
// Only a limited set of initial token sequences is considered `self` parameters; anything
// else is parsed as a normal function parameter list, so some lookahead is required.
let eself_lo = self.token.span;
- let (eself, eself_ident, eself_hi) = match self.token.kind {
+ let (eself, eself_ident, eself_hi) = match self.normalized_token.kind {
token::BinOp(token::And) => {
let eself = if is_isolated_self(self, 1) {
// `&self`
projects / rust.git / blobdiff