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rustc: Exclude stdin from codemap files when lookup_pos

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Fixes issue #1362
This commit is contained in:
Haitao Li 2011-12-21 19:50:45 +08:00
parent 085c813fe3
commit 1e4de33374
1 changed files with 5 additions and 3 deletions
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8
src/comp/syntax/codemap.rs
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@ -35,15 +35,17 @@ fn next_line(file: filemap, chpos: uint, byte_pos: uint) {
fn lookup_pos(map: codemap, pos: uint, lookup: lookup_fn) -> loc {
let len = vec::len(map.files);
if len > 1u && map.files[len - 1u].name == "-" {
// the trailing "-" must be the core_macros inserted by expand_crate,
// exclude it from the targets to lookup
len = len - 1u;
}
let a = 0u;
let b = len;
while b - a > 1u {
let m = (a + b) / 2u;
if lookup(map.files[m].start_pos) > pos { b = m; } else { a = m; }
}
if (a >= len) {
ret { filename: "-", line: 0u, col: 0u };
}
let f = map.files[a];
a = 0u;
b = vec::len(f.lines);