Initial commit.

native_mate/arguments.cc

@@ -0,0 +1,48 @@
+// 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.chromium file.
+
+#include "native_mate/arguments.h"
+
+#include "base/strings/stringprintf.h"
+#include "native_mate/converter.h"
+
+namespace mate {
+
+Arguments::Arguments()
+    : isolate_(NULL),
+      info_(NULL),
+      next_(0),
+      insufficient_arguments_(false) {
+}
+
+Arguments::Arguments(const MATE_METHOD_ARGS_TYPE& info)
+    : isolate_(info.GetIsolate()),
+      info_(&info),
+      next_(0),
+      insufficient_arguments_(false) {
+}
+
+Arguments::~Arguments() {
+}
+
+v8::Handle<v8::Value> Arguments::PeekNext() const {
+  if (next_ >= info_->Length())
+    return v8::Handle<v8::Value>();
+  return (*info_)[next_];
+}
+
+void Arguments::ThrowError() const {
+  if (insufficient_arguments_)
+    return ThrowTypeError("Insufficient number of arguments.");
+
+  ThrowTypeError(base::StringPrintf(
+      "Error processing argument %d.", next_ - 1));
+}
+
+void Arguments::ThrowTypeError(const std::string& message) const {
+  MATE_THROW_EXCEPTION(isolate_, v8::Exception::TypeError(
+      StringToV8(isolate_, message)));
+}
+
+}  // namespace mate