| // Copyright (c) 2017 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. |
| |
| #ifndef THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_IDL_TYPES_BASE_H_ |
| #define THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_IDL_TYPES_BASE_H_ |
| |
| namespace blink { |
| |
| // This is the base type for all Web IDL types, such as the ones defined in |
| // idl_types.h. It is defined in a separate location to avoid circular header |
| // inclusions when one only needs to check if a type inherits from IDLBase. |
| struct IDLBase { |
| using ImplType = void; |
| }; |
| |
| // If a child class returns a simple type known at the time it is declared, it |
| // can inherit from IDLBaseHelper to avoid having to set ImplType on its own. |
| // |
| // Example: |
| // struct IDLDouble final : public IDLBaseHelper<double> {}; |
| template <typename T> |
| struct IDLBaseHelper : public IDLBase { |
| using ImplType = T; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_RENDERER_BINDINGS_CORE_V8_IDL_TYPES_BASE_H_ |
