syntax: use a better Show impl for Ident

Rather than just dumping the id in the interner, which is useless, actually
print the interned string. Adjust the lexer logging to use Show instead of
Poly.

2 files changed, 8 insertions, 2 deletions

diff --git a/src/libsyntax/ast.rs b/src/libsyntax/ast.rs
index c5afc5067b6..d96f1393bc9 100644
--- a/src/libsyntax/ast.rs
+++ b/src/libsyntax/ast.rs
@@ -41,7 +41,7 @@ pub fn P<T: 'static>(value: T) -> P<T> {
 /// table) and a SyntaxContext to track renaming and
 /// macro expansion per Flatt et al., "Macros
 /// That Work Together"
-#[deriving(Clone, Hash, PartialOrd, Eq, Ord, Show)]
+#[deriving(Clone, Hash, PartialOrd, Eq, Ord)]
 pub struct Ident {
     pub name: Name,
     pub ctxt: SyntaxContext
@@ -52,6 +52,12 @@ impl Ident {
     pub fn new(name: Name) -> Ident { Ident {name: name, ctxt: EMPTY_CTXT}}
 }
 
+impl Show for Ident {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        write!(f, "\"{}\"#{}", token::get_ident(*self).get(), self.ctxt)
+    }
+}
+
 impl PartialEq for Ident {
     fn eq(&self, other: &Ident) -> bool {
         if self.ctxt == other.ctxt {
diff --git a/src/libsyntax/parse/lexer/mod.rs b/src/libsyntax/parse/lexer/mod.rs
index 43bbba85271..41035ffe89e 100644
--- a/src/libsyntax/parse/lexer/mod.rs
+++ b/src/libsyntax/parse/lexer/mod.rs
@@ -90,7 +90,7 @@ impl<'a> Reader for TtReader<'a> {
     }
     fn next_token(&mut self) -> TokenAndSpan {
         let r = tt_next_token(self);
-        debug!("TtReader: r={:?}", r);
+        debug!("TtReader: r={}", r);
         r
     }
     fn fatal(&self, m: &str) -> ! {