Introduce gin_shell

gin/try_catch.cc

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "gin/try_catch.h"
+
+#include "gin/converter.h"
+
+namespace gin {
+
+TryCatch::TryCatch() {
+}
+
+TryCatch::~TryCatch() {
+}
+
+bool TryCatch::HasCaught() {
+  return try_catch_.HasCaught();
+}
+
+std::string TryCatch::GetPrettyMessage() {
+  std::string info;
+  ConvertFromV8(try_catch_.Message()->Get(), &info);
+
+  std::string sounce_line;
+  if (ConvertFromV8(try_catch_.Message()->GetSourceLine(), &sounce_line))
+    info += "\n" + sounce_line;
+
+  return info;
+}
+
+}  // namespace gin