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      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 
     40