diff options
Diffstat (limited to 'src/libsyntax/ext')
| -rw-r--r-- | src/libsyntax/ext/tt/transcribe.rs | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/libsyntax/ext/tt/transcribe.rs b/src/libsyntax/ext/tt/transcribe.rs index 38a926b6e87..8a6a8e53a3e 100644 --- a/src/libsyntax/ext/tt/transcribe.rs +++ b/src/libsyntax/ext/tt/transcribe.rs @@ -10,14 +10,15 @@ use self::LockstepIterSize::*; use ast::Ident; -use syntax_pos::{Span, DUMMY_SP}; use errors::{Handler, DiagnosticBuilder}; use ext::tt::macro_parser::{NamedMatch, MatchedSeq, MatchedNonterminal}; use parse::token::{DocComment, MatchNt, SubstNt}; use parse::token::{Token, Interpolated, NtIdent, NtTT}; use parse::token; use parse::lexer::TokenAndSpan; +use syntax_pos::{Span, DUMMY_SP}; use tokenstream::{self, TokenTree}; +use util::small_vector::SmallVector; use std::rc::Rc; use std::ops::Add; @@ -36,7 +37,7 @@ struct TtFrame { pub struct TtReader<'a> { pub sp_diag: &'a Handler, /// the unzipped tree: - stack: Vec<TtFrame>, + stack: SmallVector<TtFrame>, /* for MBE-style macro transcription */ interpolations: HashMap<Ident, Rc<NamedMatch>>, @@ -74,7 +75,7 @@ pub fn new_tt_reader_with_doc_flag(sp_diag: &Handler, -> TtReader { let mut r = TtReader { sp_diag: sp_diag, - stack: vec!(TtFrame { + stack: SmallVector::one(TtFrame { forest: TokenTree::Sequence(DUMMY_SP, Rc::new(tokenstream::SequenceRepetition { tts: src, // doesn't matter. This merely holds the root unzipping. |