bjoernager/rust
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parser: {check,expect}_lifetime into ty.rs

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This commit is contained in:
Mazdak Farrokhzad 2019-08-11 20:46:34 +02:00
parent 385d07f359
commit bcfcbfc923
2 changed files with 19 additions and 19 deletions
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20
src/libsyntax/parse/parser/ty.rs
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@ -1,8 +1,8 @@
use super::{Parser, PResult, PathStyle, PrevTokenKind};
use super::{Parser, PResult, PathStyle, PrevTokenKind, TokenType};
use crate::{maybe_whole, maybe_recover_from_interpolated_ty_qpath};
use crate::ptr::P;
use crate::ast::{self, Ty, TyKind, MutTy, BareFnTy, FunctionRetTy, GenericParam};
use crate::ast::{self, Ty, TyKind, MutTy, BareFnTy, FunctionRetTy, GenericParam, Lifetime, Ident};
use crate::ast::{TraitBoundModifier, TraitObjectSyntax, GenericBound, GenericBounds, PolyTraitRef};
use crate::ast::{Mutability, AnonConst, FnDecl, Mac_};
use crate::parse::token::{self, Token};
@ -442,4 +442,20 @@ impl<'a> Parser<'a> {
Ok(Vec::new())
}
}
crate fn check_lifetime(&mut self) -> bool {
self.expected_tokens.push(TokenType::Lifetime);
self.token.is_lifetime()
}
/// Parses a single lifetime `'a` or panics.
crate fn expect_lifetime(&mut self) -> Lifetime {
if let Some(ident) = self.token.lifetime() {
let span = self.token.span;
self.bump();
Lifetime { ident: Ident::new(ident.name, span), id: ast::DUMMY_NODE_ID }
} else {
self.span_bug(self.token.span, "not a lifetime")
}
}
}