ipc/param_traits_read_macros.h

   1 // Copyright (c) 2011 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 #pragma once
   8
   9 // Null out all the macros that need nulling.
  10 #include "ipc/ipc_message_null_macros.h"
  11
  12 // STRUCT declarations cause corresponding STRUCT_TRAITS declarations to occur.
  13 #undef IPC_STRUCT_BEGIN
  14 #undef IPC_STRUCT_BEGIN_WITH_PARENT
  15 #undef IPC_STRUCT_MEMBER
  16 #undef IPC_STRUCT_END
  17 #define IPC_STRUCT_BEGIN_WITH_PARENT(struct_name, parent) \
  18   IPC_STRUCT_BEGIN(struct_name)
  19 #define IPC_STRUCT_BEGIN(struct_name) IPC_STRUCT_TRAITS_BEGIN(struct_name)
  20 #define IPC_STRUCT_MEMBER(type, name) IPC_STRUCT_TRAITS_MEMBER(name)
  21 #define IPC_STRUCT_END() IPC_STRUCT_TRAITS_END()
  22
  23 // Set up so next include will generate read methods.
  24 #undef IPC_STRUCT_TRAITS_BEGIN
  25 #undef IPC_STRUCT_TRAITS_MEMBER
  26 #undef IPC_STRUCT_TRAITS_PARENT
  27 #undef IPC_STRUCT_TRAITS_END
  28 #define IPC_STRUCT_TRAITS_BEGIN(struct_name) \
  29   bool ParamTraits<struct_name>:: \
  30       Read(const Message* m, void** iter, param_type* p) { \
  31     return
  32 #define IPC_STRUCT_TRAITS_MEMBER(name) ReadParam(m, iter, &p->name) &&
  33 #define IPC_STRUCT_TRAITS_PARENT(type) ParamTraits<type>::Read(m, iter, p) &&
  34 #define IPC_STRUCT_TRAITS_END() 1; }
  35
  36 #undef IPC_ENUM_TRAITS
  37 #define IPC_ENUM_TRAITS(enum_name) \
  38   bool ParamTraits<enum_name>:: \
  39       Read(const Message* m, void** iter, param_type* p) { \
  40     int type; \
  41     if (!m->ReadInt(iter, &type)) \
  42       return false; \
  43     *p = static_cast<param_type>(type); \
  44     return true; \
  45   }
  46
  47 #endif  // IPC_PARAM_TRAITS_READ_MACROS_H_
  48