From bd4aed25da30995abcc5969ad7d14d9c6dd869a5 Mon Sep 17 00:00:00 2001
From: Cyrus Najmabadi <cyrusn@microsoft.com>
Date: Sun, 14 Dec 2014 11:16:50 -0800
Subject: [PATCH] Don't convert the tree to JSON before checking it.  Just
 check it directly.

---
 src/harness/fourslash.ts | 7 +------
 1 file changed, 1 insertion(+), 6 deletions(-)

diff --git a/src/harness/fourslash.ts b/src/harness/fourslash.ts
index 18d34e94b03..69bc2962625 100644
--- a/src/harness/fourslash.ts
+++ b/src/harness/fourslash.ts
@@ -1434,12 +1434,7 @@ module FourSlash {
                 this.raiseError('Mismatched incremental/reference syntactic diagnostics for file ' + this.activeFile.fileName + '.\n=== Incremental diagnostics ===\n' + incrementalSyntaxDiagnostics + '\n=== Reference Diagnostics ===\n' + referenceSyntaxDiagnostics);
             }
 
-            var incrementalSourceFileJSON = Utils.sourceFileToJSON(incrementalSourceFile);
-            var referenceSourceFileJSON = Utils.sourceFileToJSON(referenceSourceFile);
-
-            if (incrementalSyntaxDiagnostics !== referenceSyntaxDiagnostics) {
-                this.raiseError('Mismatched incremental/reference ast for file ' + this.activeFile.fileName + '.\n=== Incremental AST ===\n' + incrementalSourceFileJSON + '\n=== Reference AST ===\n' + referenceSourceFileJSON);
-            }
+            Utils.assertStructuralEquals(incrementalSourceFile, referenceSourceFile);
 
              //if (this.editValidation !== IncrementalEditValidation.SyntacticOnly) {
              //   var compiler = new TypeScript.TypeScriptCompiler();