Bug 1331034 - Introduce a JSONPrinter class. r=h4writer

--HG--
rename : js/src/jit/JSONSpewer.cpp => js/src/jit/JSONPrinter.cpp

js/src/jit/JSONPrinter.cpp

@@ -0,0 +1,140 @@
+/* -*- 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/. */
+
+#ifdef JS_JITSPEW
+
+#include "jit/JSONPrinter.h"
+
+#include "mozilla/SizePrintfMacros.h"
+
+#include <stdarg.h>
+
+using namespace js;
+using namespace js::jit;
+
+void
+JSONPrinter::indent()
+{
+    MOZ_ASSERT(indentLevel_ >= 0);
+    out_.printf("\n");
+    for (int i = 0; i < indentLevel_; i++)
+        out_.printf("  ");
+}
+
+void
+JSONPrinter::property(const char* name)
+{
+    if (!first_)
+        out_.printf(",");
+    indent();
+    out_.printf("\"%s\":", name);
+    first_ = false;
+}
+
+void
+JSONPrinter::beginObject()
+{
+    if (!first_) {
+        out_.printf(",");
+        indent();
+    }
+    out_.printf("{");
+    indentLevel_++;
+    first_ = true;
+}
+
+void
+JSONPrinter::beginObjectProperty(const char* name)
+{
+    property(name);
+    out_.printf("{");
+    indentLevel_++;
+    first_ = true;
+}
+
+void
+JSONPrinter::beginListProperty(const char* name)
+{
+    property(name);
+    out_.printf("[");
+    first_ = true;
+}
+
+void
+JSONPrinter::beginStringProperty(const char* name)
+{
+    property(name);
+    out_.printf("\"");
+}
+
+void
+JSONPrinter::endStringProperty()
+{
+    out_.printf("\"");
+}
+
+void
+JSONPrinter::stringProperty(const char* name, const char* format, ...)
+{
+    va_list ap;
+    va_start(ap, format);
+
+    beginStringProperty(name);
+    out_.vprintf(format, ap);
+    endStringProperty();
+
+    va_end(ap);
+}
+
+void
+JSONPrinter::stringValue(const char* format, ...)
+{
+    va_list ap;
+    va_start(ap, format);
+
+    if (!first_)
+        out_.printf(",");
+    out_.printf("\"");
+    out_.vprintf(format, ap);
+    out_.printf("\"");
+
+    va_end(ap);
+    first_ = false;
+}
+
+void
+JSONPrinter::integerProperty(const char* name, int value)
+{
+    property(name);
+    out_.printf("%d", value);
+}
+
+void
+JSONPrinter::integerValue(int value)
+{
+    if (!first_)
+        out_.printf(",");
+    out_.printf("%d", value);
+    first_ = false;
+}
+
+void
+JSONPrinter::endObject()
+{
+    indentLevel_--;
+    indent();
+    out_.printf("}");
+    first_ = false;
+}
+
+void
+JSONPrinter::endList()
+{
+    out_.printf("]");
+    first_ = false;
+}
+
+#endif /* JS_JITSPEW */