Removed the dependency of compiler on common. This is done to make compiler self-sufficient so that it is easier to consume by external developers. I tried to replace all instances of assert by simply redefining assert(x) to ASSERT(x), but was getting a lot of compile errors. I still need to investigate that.
Review URL: http://codereview.appspot.com/1461041

git-svn-id: https://angleproject.googlecode.com/svn/trunk@323 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/compiler/debug.cpp b/src/compiler/debug.cpp
new file mode 100644
index 0000000..f3a7785
--- /dev/null
+++ b/src/compiler/debug.cpp
@@ -0,0 +1,35 @@
+//
+// Copyright (c) 2002-2010 The ANGLE Project Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+//
+
+// debug.cpp: Debugging utilities.
+
+#include "compiler/debug.h"
+
+#include <stdarg.h>
+
+#include "compiler/ParseHelper.h"
+
+static const int kTraceBufferLen = 1024;
+
+#ifdef TRACE_ENABLED
+extern "C" {
+void Trace(const char *format, ...) {
+    if (!format) return;
+
+    TParseContext* parseContext = GetGlobalParseContext();
+    if (parseContext) {
+        char buf[kTraceBufferLen];
+        va_list args;
+        va_start(args, format);
+        vsnprintf(buf, kTraceBufferLen, format, args);
+        va_end(args);
+
+        parseContext->infoSink.debug << buf;
+    }
+}
+}  // extern "C"
+#endif  // TRACE_ENABLED
+