diff options
| -rw-r--r-- | compiler/rustc_ast/src/tokenstream.rs | 4 | ||||
| -rw-r--r-- | compiler/rustc_expand/src/mbe/metavar_expr.rs | 10 | ||||
| -rw-r--r-- | src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs | 2 | ||||
| -rw-r--r-- | src/tools/rustfmt/src/macros.rs | 4 |
4 files changed, 10 insertions, 10 deletions
diff --git a/compiler/rustc_ast/src/tokenstream.rs b/compiler/rustc_ast/src/tokenstream.rs index c6b6addc946..59e5ff9f7a5 100644 --- a/compiler/rustc_ast/src/tokenstream.rs +++ b/compiler/rustc_ast/src/tokenstream.rs @@ -678,8 +678,8 @@ impl<'t> RefTokenTreeCursor<'t> { RefTokenTreeCursor { stream, index: 0 } } - pub fn look_ahead(&self, n: usize) -> Option<&TokenTree> { - self.stream.0.get(self.index + n) + pub fn peek(&self) -> Option<&TokenTree> { + self.stream.0.get(self.index) } } diff --git a/compiler/rustc_expand/src/mbe/metavar_expr.rs b/compiler/rustc_expand/src/mbe/metavar_expr.rs index 810a5d30c7e..105e59bcece 100644 --- a/compiler/rustc_expand/src/mbe/metavar_expr.rs +++ b/compiler/rustc_expand/src/mbe/metavar_expr.rs @@ -74,7 +74,7 @@ impl MetaVarExpr { } }; result.push(element); - if iter.look_ahead(0).is_none() { + if iter.peek().is_none() { break; } if !try_eat_comma(&mut iter) { @@ -166,7 +166,7 @@ fn parse_count<'psess>( eat_dollar(iter, psess, span)?; let ident = parse_ident(iter, psess, span)?; let depth = if try_eat_comma(iter) { - if iter.look_ahead(0).is_none() { + if iter.peek().is_none() { return Err(psess.dcx().struct_span_err( span, "`count` followed by a comma must have an associated index indicating its depth", @@ -252,7 +252,7 @@ fn parse_token<'psess, 't>( /// Tries to move the iterator forward returning `true` if there is a comma. If not, then the /// iterator is not modified and the result is `false`. fn try_eat_comma(iter: &mut RefTokenTreeCursor<'_>) -> bool { - if let Some(TokenTree::Token(Token { kind: token::Comma, .. }, _)) = iter.look_ahead(0) { + if let Some(TokenTree::Token(Token { kind: token::Comma, .. }, _)) = iter.peek() { let _ = iter.next(); return true; } @@ -262,7 +262,7 @@ fn try_eat_comma(iter: &mut RefTokenTreeCursor<'_>) -> bool { /// Tries to move the iterator forward returning `true` if there is a dollar sign. If not, then the /// iterator is not modified and the result is `false`. fn try_eat_dollar(iter: &mut RefTokenTreeCursor<'_>) -> bool { - if let Some(TokenTree::Token(Token { kind: token::Dollar, .. }, _)) = iter.look_ahead(0) { + if let Some(TokenTree::Token(Token { kind: token::Dollar, .. }, _)) = iter.peek() { let _ = iter.next(); return true; } @@ -275,7 +275,7 @@ fn eat_dollar<'psess>( psess: &'psess ParseSess, span: Span, ) -> PResult<'psess, ()> { - if let Some(TokenTree::Token(Token { kind: token::Dollar, .. }, _)) = iter.look_ahead(0) { + if let Some(TokenTree::Token(Token { kind: token::Dollar, .. }, _)) = iter.peek() { let _ = iter.next(); return Ok(()); } diff --git a/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs b/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs index c8f81413728..76b88b746cb 100644 --- a/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs +++ b/src/tools/clippy/clippy_lints/src/crate_in_macro_def.rs @@ -86,7 +86,7 @@ fn contains_unhygienic_crate_reference(tts: &TokenStream) -> Option<Span> { while let Some(curr) = cursor.next() { if !prev_is_dollar && let Some(span) = is_crate_keyword(curr) - && let Some(next) = cursor.look_ahead(0) + && let Some(next) = cursor.peek() && is_token(next, &TokenKind::PathSep) { return Some(span); diff --git a/src/tools/rustfmt/src/macros.rs b/src/tools/rustfmt/src/macros.rs index fa281cab724..dad074440b4 100644 --- a/src/tools/rustfmt/src/macros.rs +++ b/src/tools/rustfmt/src/macros.rs @@ -1190,7 +1190,7 @@ impl<'a> MacroParser<'a> { // (`(` ... `)` `=>` `{` ... `}`)* fn parse(&mut self) -> Option<Macro> { let mut branches = vec![]; - while self.toks.look_ahead(0).is_some() { + while self.toks.peek().is_some() { branches.push(self.parse_branch()?); } @@ -1237,7 +1237,7 @@ impl<'a> MacroParser<'a> { span, }, _, - )) = self.toks.look_ahead(0) + )) = self.toks.peek() { hi = span.hi(); self.toks.next(); |