syntax: fix fallout from using ptr::P.

src/libsyntax/util/parser_testing.rs

@@ -9,6 +9,7 @@
 // except according to those terms.
 
 use ast;
+use ast::P;
 use parse::{new_parse_sess};
 use parse::{ParseSess,string_to_filemap,filemap_to_tts};
 use parse::{new_parser_from_source_str};
@@ -48,21 +49,21 @@ pub fn string_to_crate (source_str : String) -> ast::Crate {
 }
 
 /// Parse a string, return an expr
-pub fn string_to_expr (source_str : String) -> Gc<ast::Expr> {
+pub fn string_to_expr (source_str : String) -> P<ast::Expr> {
     with_error_checking_parse(source_str, |p| {
         p.parse_expr()
     })
 }
 
 /// Parse a string, return an item
-pub fn string_to_item (source_str : String) -> Option<Gc<ast::Item>> {
+pub fn string_to_item (source_str : String) -> Option<P<ast::Item>> {
     with_error_checking_parse(source_str, |p| {
         p.parse_item(Vec::new())
     })
 }
 
 /// Parse a string, return a stmt
-pub fn string_to_stmt(source_str : String) -> Gc<ast::Stmt> {
+pub fn string_to_stmt(source_str : String) -> P<ast::Stmt> {
     with_error_checking_parse(source_str, |p| {
         p.parse_stmt(Vec::new())
     })
@@ -70,7 +71,7 @@ pub fn string_to_stmt(source_str : String) -> Gc<ast::Stmt> {
 
 /// Parse a string, return a pat. Uses "irrefutable"... which doesn't
 /// (currently) affect parsing.
-pub fn string_to_pat(source_str: String) -> Gc<ast::Pat> {
+pub fn string_to_pat(source_str: String) -> P<ast::Pat> {
     string_to_parser(&new_parse_sess(), source_str).parse_pat()
 }