ipc/param_traits_write_macros.h

   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_WRITE_MACROS_H_
   6 #define IPC_PARAM_TRAITS_WRITE_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 write 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   void ParamTraits<struct_name>::Write(Message* m, const param_type& p) {
  27 #define IPC_STRUCT_TRAITS_MEMBER(name) WriteParam(m, p.name);
  28 #define IPC_STRUCT_TRAITS_PARENT(type) ParamTraits<type>::Write(m, p);
  29 #define IPC_STRUCT_TRAITS_END() }
  30
  31 #undef IPC_ENUM_TRAITS_VALIDATE
  32 #define IPC_ENUM_TRAITS_VALIDATE(enum_name, validation_expression) \
  33   void ParamTraits<enum_name>::Write(Message* m, const param_type& value) { \
  34     DCHECK(validation_expression); \
  35     m->WriteInt(static_cast<int>(value)); \
  36   }
  37
  38 #endif  // IPC_PARAM_TRAITS_WRITE_MACROS_H_
  39