1 files changed, 72 insertions, 0 deletions
diff --git a/js/src/jit/JSONSpewer.h b/js/src/jit/JSONSpewer.h
new file mode 100644
index 000000000..02f449c7a
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+++ b/js/src/jit/JSONSpewer.h
@@ -0,0 +1,72 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef jit_JSONSpewer_h
+#define jit_JSONSpewer_h
+
+#ifdef JS_JITSPEW
+
+#include <stdio.h>
+
+#include "js/TypeDecls.h"
+#include "vm/Printer.h"
+
+namespace js {
+namespace jit {
+
+class BacktrackingAllocator;
+class MDefinition;
+class MIRGraph;
+class MResumePoint;
+class LNode;
+
+class JSONSpewer
+{
+  private:
+    int indentLevel_;
+    bool first_;
+    GenericPrinter& out_;
+
+    void indent();
+
+    void property(const char* name);
+    void beginObject();
+    void beginObjectProperty(const char* name);
+    void beginListProperty(const char* name);
+    void stringValue(const char* format, ...) MOZ_FORMAT_PRINTF(2, 3);
+    void stringProperty(const char* name, const char* format, ...) MOZ_FORMAT_PRINTF(3, 4);
+    void beginStringProperty(const char* name);
+    void endStringProperty();
+    void integerValue(int value);
+    void integerProperty(const char* name, int value);
+    void endObject();
+    void endList();
+
+  public:
+    explicit JSONSpewer(GenericPrinter& out)
+      : indentLevel_(0),
+        first_(true),
+        out_(out)
+    { }
+
+    void beginFunction(JSScript* script);
+    void beginPass(const char * pass);
+    void spewMDef(MDefinition* def);
+    void spewMResumePoint(MResumePoint* rp);
+    void spewMIR(MIRGraph* mir);
+    void spewLIns(LNode* ins);
+    void spewLIR(MIRGraph* mir);
+    void spewRanges(BacktrackingAllocator* regalloc);
+    void endPass();
+    void endFunction();
+};
+
+} // namespace jit
+} // namespace js
+
+#endif /* JS_JITSPEW */
+
+#endif /* jit_JSONSpewer_h */