Migrate DevToolsWindow from specific to opaque frontend host messages

chrome/browser/devtools/list_value_parser.h

+// Copyright (c) 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 "base/bind.h"
+#include "base/callback.h"
+#include "base/values.h"
+
+#ifndef CHROME_BROWSER_DEVTOOLS_LIST_VALUE_PARSER_H_
+#define CHROME_BROWSER_DEVTOOLS_LIST_VALUE_PARSER_H_
+
+namespace internal {

[pfeldman, 2013/08/23 11:29:43]

Use anonymous namespace

[Vladislav Kaznacheev, 2013/08/23 13:44:17]

Done.

+
+bool GetValue(const base::ListValue& list, int pos, std::string& value) {
+  return list.GetString(pos, &value);
+}
+
+bool GetValue(const base::ListValue& list, int pos, int& value) {
+  return list.GetInteger(pos, &value);
+}
+
+bool GetValue(const base::ListValue& list, int pos, bool& value) {
+  return list.GetBoolean(pos, &value);
+}
+
+template <typename T>
+struct StorageTraits {
+  typedef T StorageType;
+};
+
+template <typename T>
+struct StorageTraits<const T&> {
+  typedef T StorageType;
+};
+
+template <class A>
+class Argument {
+ public:
+  typedef typename StorageTraits<A>::StorageType ValueType;
+
+  Argument(const base::ListValue& list, int pos) {
+    valid_ = GetValue(list, pos, value_);
+  }
+
+  ValueType value() const { return value_; }
+  bool valid() const { return valid_; }
+
+ private:
+  ValueType value_;
+  bool valid_;
+};
+
+bool ParseAndHandle0(const base::Callback<void(void)>& handler,
+                     const base::ListValue& list) {
+  handler.Run();
+  return true;
+}
+
+template <class A1>
+bool ParseAndHandle1(const base::Callback<void(A1)>& handler,
+                     const base::ListValue& list) {
+  if (list.GetSize() != 1)
+    return false;
+  Argument<A1> arg1(list, 0);
+  if (!arg1.valid())
+    return false;
+  handler.Run(arg1.value());
+  return true;
+}
+
+template <class A1, class A2>
+bool ParseAndHandle2(const base::Callback<void(A1, A2)>& handler,
+                     const base::ListValue& list) {
+  if (list.GetSize() != 2)
+    return false;
+  Argument<A1> arg1(list, 0);
+  if (!arg1.valid())
+    return false;
+  Argument<A2> arg2(list, 1);
+  if (!arg2.valid())
+    return false;
+  handler.Run(arg1.value(), arg2.value());
+  return true;
+}
+
+template <class A1, class A2, class A3>
+bool ParseAndHandle3(const base::Callback<void(A1, A2, A3)>& handler,
+                     const base::ListValue& list) {
+  if (list.GetSize() != 3)
+    return false;
+  Argument<A1> arg1(list, 0);
+  if (!arg1.valid())
+    return false;
+  Argument<A2> arg2(list, 1);
+  if (!arg2.valid())
+    return false;
+  Argument<A3> arg3(list, 2);
+  if (!arg3.valid())
+    return false;
+  handler.Run(arg1.value(), arg2.value(), arg3.value());
+  return true;
+}
+
+}  // namespace internal
+
+typedef base::Callback<bool(const base::ListValue&)> ListValueParser;
+
+ListValueParser BindToListParser(const base::Callback<void()>& handler) {
+  return base::Bind(&internal::ParseAndHandle0, handler);
+}
+
+template <class A1>
+ListValueParser BindToListParser(const base::Callback<void(A1)>& handler) {
+  return base::Bind(&internal::ParseAndHandle1<A1>, handler);
+}
+
+template <class A1, class A2>
+ListValueParser BindToListParser(const base::Callback<void(A1,A2)>& handler) {
+  return base::Bind(&internal::ParseAndHandle2<A1, A2>, handler);
+}
+
+template <class A1, class A2, class A3>
+ListValueParser BindToListParser(
+    const base::Callback<void(A1,A2,A3)>& handler) {
+  return base::Bind(&internal::ParseAndHandle3<A1, A2, A3>, handler);
+}
+
+#endif  // CHROME_BROWSER_DEVTOOLS_LIST_VALUE_PARSER_H_