Move to single-uint file-position representation.

This makes passing them around cheaper. There is now a table (see
front/codemap.rs) that is needed to transform such an uint into an
actual filename/line/col location.

Also cleans up the span building in the parser a bit.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/comp/rustc.rc b/src/comp/rustc.rc
index 14efb667..981577ab 100644
--- a/src/comp/rustc.rc
+++ b/src/comp/rustc.rc
@@ -7,6 +7,7 @@ mod front {
     mod ast;
     mod creader;
     mod extfmt;
+    mod codemap;
     mod lexer;
     mod parser;
     mod token;