1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef IPC_PARAM_TRAITS_READ_MACROS_H_
6#define IPC_PARAM_TRAITS_READ_MACROS_H_
7
8// Null out all the macros that need nulling.
9#include "ipc/ipc_message_null_macros.h"
10
11// STRUCT declarations cause corresponding STRUCT_TRAITS declarations to occur.
12#undef IPC_STRUCT_BEGIN_WITH_PARENT
13#undef IPC_STRUCT_MEMBER
14#undef IPC_STRUCT_END
15#define IPC_STRUCT_BEGIN_WITH_PARENT(struct_name, parent) \
16  IPC_STRUCT_TRAITS_BEGIN(struct_name)
17#define IPC_STRUCT_MEMBER(type, name, ...) IPC_STRUCT_TRAITS_MEMBER(name)
18#define IPC_STRUCT_END() IPC_STRUCT_TRAITS_END()
19
20// Set up so next include will generate read methods.
21#undef IPC_STRUCT_TRAITS_BEGIN
22#undef IPC_STRUCT_TRAITS_MEMBER
23#undef IPC_STRUCT_TRAITS_PARENT
24#undef IPC_STRUCT_TRAITS_END
25#define IPC_STRUCT_TRAITS_BEGIN(struct_name) \
26  bool ParamTraits<struct_name>:: \
27      Read(const Message* m, PickleIterator* iter, param_type* p) { \
28    return
29#define IPC_STRUCT_TRAITS_MEMBER(name) ReadParam(m, iter, &p->name) &&
30#define IPC_STRUCT_TRAITS_PARENT(type) ParamTraits<type>::Read(m, iter, p) &&
31#define IPC_STRUCT_TRAITS_END() 1; }
32
33#undef IPC_ENUM_TRAITS_VALIDATE
34#define IPC_ENUM_TRAITS_VALIDATE(enum_name, validation_expression)    \
35  bool ParamTraits<enum_name>:: \
36      Read(const Message* m, PickleIterator* iter, param_type* p) { \
37    int value; \
38    if (!m->ReadInt(iter, &value)) \
39      return false; \
40    if (!(validation_expression)) \
41      return false; \
42    *p = static_cast<param_type>(value); \
43    return true; \
44  }
45
46#endif  // IPC_PARAM_TRAITS_READ_MACROS_H_
47
48