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librustc: Optimize metadata::decoder::item_name.

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This commit is contained in:
Patrick Walton 2013-04-02 16:20:02 -07:00
parent 53f54dda60
commit 4c29b4cb93
4 changed files with 48 additions and 2 deletions
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10
src/librustc/metadata/decoder.rs
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@ -37,7 +37,7 @@ use std::serialize::Decodable;
use syntax::ast_map;
use syntax::attr;
use syntax::diagnostic::span_handler;
use syntax::parse::token::{ident_interner, special_idents};
use syntax::parse::token::{StringRef, ident_interner, special_idents};
use syntax::print::pprust;
use syntax::{ast, ast_util};
use syntax::codemap;
@ -322,7 +322,13 @@ fn item_path(intr: @ident_interner, item_doc: ebml::Doc) -> ast_map::path {
fn item_name(intr: @ident_interner, item: ebml::Doc) -> ast::ident {
let name = reader::get_doc(item, tag_paths_data_name);
intr.intern(@str::from_bytes(reader::doc_data(name)))
do reader::with_doc_data(name) |data| {
let string = str::from_bytes_slice(data);
match intr.find_equiv(&StringRef(string)) {
None => intr.intern(@(string.to_owned())),
Some(val) => val,
}
}
}
fn item_to_def_like(item: ebml::Doc, did: ast::def_id, cnum: ast::crate_num)