1af3174fe3
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.
This is a compiler and suite of associated libraries and documentation for the Rust programming language. See LICENSE.txt for terms of copyright and redistribution. See http://github.com/graydon/rust for current development page.