From 32e437161da5e60c660b86da9003b7f73ebb5676 Mon Sep 17 00:00:00 2001 From: Huon Wilson Date: Mon, 11 Aug 2014 22:01:37 +1000 Subject: rustc: implement a pretty mode to print ident/name's ctxt & gensyms. `--pretty expanded,hygiene` is helpful with debugging macro issues, since two identifiers/names can be textually the same, but different internally (resulting in weird "undefined variable" errors). --- src/libsyntax/print/pprust.rs | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'src/libsyntax') diff --git a/src/libsyntax/print/pprust.rs b/src/libsyntax/print/pprust.rs index da265d81250..14ba4d73a4e 100644 --- a/src/libsyntax/print/pprust.rs +++ b/src/libsyntax/print/pprust.rs @@ -33,6 +33,8 @@ use std::io; use std::mem; pub enum AnnNode<'a> { + NodeIdent(&'a ast::Ident), + NodeName(&'a ast::Name), NodeBlock(&'a ast::Block), NodeItem(&'a ast::Item), NodeExpr(&'a ast::Expr), @@ -1725,14 +1727,16 @@ impl<'a> State<'a> { pub fn print_ident(&mut self, ident: ast::Ident) -> IoResult<()> { if self.encode_idents_with_hygiene { let encoded = ident.encode_with_hygiene(); - word(&mut self.s, encoded.as_slice()) + try!(word(&mut self.s, encoded.as_slice())) } else { - word(&mut self.s, token::get_ident(ident).get()) + try!(word(&mut self.s, token::get_ident(ident).get())) } + self.ann.post(self, NodeIdent(&ident)) } pub fn print_name(&mut self, name: ast::Name) -> IoResult<()> { - word(&mut self.s, token::get_name(name).get()) + try!(word(&mut self.s, token::get_name(name).get())); + self.ann.post(self, NodeName(&name)) } pub fn print_for_decl(&mut self, loc: &ast::Local, -- cgit 1.4.1-3-g733a5