Change spans to use byte offsets instead of char offsets

src/libsyntax/ext/tt/macro_parser.rs

@@ -11,7 +11,7 @@ use dvec::DVec;
 use ast::{matcher, match_tok, match_seq, match_nonterminal, ident};
 use ast_util::mk_sp;
 use std::map::HashMap;
-use codemap::CharPos;
+use codemap::BytePos;
 
 /* This is an Earley-like parser, without support for in-grammar nonterminals,
 only by calling out to the main rust parser for named nonterminals (which it
@@ -103,7 +103,7 @@ type matcher_pos = ~{
     mut up: matcher_pos_up, // mutable for swapping only
     matches: ~[DVec<@named_match>],
     match_lo: uint, match_hi: uint,
-    sp_lo: CharPos,
+    sp_lo: BytePos,
 };
 
 fn copy_up(&& mpu: matcher_pos_up) -> matcher_pos {
@@ -123,7 +123,7 @@ fn count_names(ms: &[matcher]) -> uint {
 }
 
 #[allow(non_implicitly_copyable_typarams)]
-fn initial_matcher_pos(ms: ~[matcher], sep: Option<Token>, lo: CharPos)
+fn initial_matcher_pos(ms: ~[matcher], sep: Option<Token>, lo: BytePos)
     -> matcher_pos {
     let mut match_idx_hi = 0u;
     for ms.each() |elt| {