syntax: Remove usage of io_error in tests

Author: alexcrichton

src/libsyntax/ext/expand.rs

@@ -957,14 +957,13 @@ mod test {
     use ast_util;
     use codemap;
     use codemap::Spanned;
-    use fold;
     use fold::*;
     use ext::base::{CrateLoader, MacroCrate};
     use parse;
     use parse::token::{fresh_mark, gensym, intern};
     use parse::token;
     use util::parser_testing::{string_to_crate, string_to_crate_and_sess};
-    use util::parser_testing::{string_to_pat, string_to_tts, strs_to_idents};
+    use util::parser_testing::{string_to_pat, strs_to_idents};
     use visit;
     use visit::Visitor;
 
@@ -1253,14 +1252,14 @@ mod test {
                     let varref_name = mtwt_resolve(varref.segments[0].identifier);
                     let varref_marks = mtwt_marksof(varref.segments[0].identifier.ctxt,
                                                     invalid_name);
-                    if (!(varref_name==binding_name)){
+                    if !(varref_name==binding_name) {
                         println!("uh oh, should match but doesn't:");
                         println!("varref: {:?}",varref);
                         println!("binding: {:?}", bindings[binding_idx]);
                         ast_util::display_sctable(get_sctable());
                     }
                     assert_eq!(varref_name,binding_name);
-                    if (bound_ident_check) {
+                    if bound_ident_check {
                         // we're checking bound-identifier=?, and the marks
                         // should be the same, too:
                         assert_eq!(varref_marks,binding_marks.clone());
@@ -1269,7 +1268,7 @@ mod test {
                     let fail = (varref.segments.len() == 1)
                         && (mtwt_resolve(varref.segments[0].identifier) == binding_name);
                     // temp debugging:
-                    if (fail) {
+                    if fail {
                         println!("failure on test {}",test_idx);
                         println!("text of test case: \"{}\"", teststr);
                         println!("");

src/libsyntax/fold.rs

@@ -861,15 +861,17 @@ pub fn noop_fold_stmt<T: Folder>(s: &Stmt, folder: &mut T) -> SmallVector<@Stmt>
 
 #[cfg(test)]
 mod test {
+    use std::io;
     use ast;
     use util::parser_testing::{string_to_crate, matches_codepattern};
     use parse::token;
     use print::pprust;
     use super::*;
 
     // this version doesn't care about getting comments or docstrings in.
-    fn fake_print_crate(s: &mut pprust::State, crate: &ast::Crate) {
-        pprust::print_mod(s, &crate.module, crate.attrs);
+    fn fake_print_crate(s: &mut pprust::State,
+                        crate: &ast::Crate) -> io::IoResult<()> {
+        pprust::print_mod(s, &crate.module, crate.attrs)
     }
 
     // change every identifier to "zz"

src/libsyntax/util/parser_testing.rs

@@ -101,30 +101,30 @@ pub fn matches_codepattern(a : &str, b : &str) -> bool {
     let mut idx_a = 0;
     let mut idx_b = 0;
     loop {
-        if (idx_a == a.len() && idx_b == b.len()) {
+        if idx_a == a.len() && idx_b == b.len() {
             return true;
         }
-        else if (idx_a == a.len()) {return false;}
-        else if (idx_b == b.len()) {
+        else if idx_a == a.len() {return false;}
+        else if idx_b == b.len() {
             // maybe the stuff left in a is all ws?
-            if (is_whitespace(a.char_at(idx_a))) {
-                return (scan_for_non_ws_or_end(a,idx_a) == a.len());
+            if is_whitespace(a.char_at(idx_a)) {
+                return scan_for_non_ws_or_end(a,idx_a) == a.len();
             } else {
                 return false;
             }
         }
         // ws in both given and pattern:
-        else if (is_whitespace(a.char_at(idx_a))
-           && is_whitespace(b.char_at(idx_b))) {
+        else if is_whitespace(a.char_at(idx_a))
+           && is_whitespace(b.char_at(idx_b)) {
             idx_a = scan_for_non_ws_or_end(a,idx_a);
             idx_b = scan_for_non_ws_or_end(b,idx_b);
         }
         // ws in given only:
-        else if (is_whitespace(a.char_at(idx_a))) {
+        else if is_whitespace(a.char_at(idx_a)) {
             idx_a = scan_for_non_ws_or_end(a,idx_a);
         }
         // *don't* silently eat ws in expected only.
-        else if (a.char_at(idx_a) == b.char_at(idx_b)) {
+        else if a.char_at(idx_a) == b.char_at(idx_b) {
             idx_a += 1;
             idx_b += 1;
         }