ipc/param_traits_log_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_LOG_MACROS_H_
   6 #define IPC_PARAM_TRAITS_LOG_MACROS_H_
   7 #pragma once
   8
   9 #include <string>
  10
  11 // Null out all the macros that need nulling.
  12 #include "ipc/ipc_message_null_macros.h"
  13
  14 // STRUCT declarations cause corresponding STRUCT_TRAITS declarations to occur.
  15 #undef IPC_STRUCT_BEGIN
  16 #undef IPC_STRUCT_MEMBER
  17 #undef IPC_STRUCT_END
  18 #define IPC_STRUCT_BEGIN(struct_name) IPC_STRUCT_TRAITS_BEGIN(struct_name)
  19 #define IPC_STRUCT_MEMBER(type, name) IPC_STRUCT_TRAITS_MEMBER(name)
  20 #define IPC_STRUCT_END() IPC_STRUCT_TRAITS_END()
  21
  22 // Set up so next include will generate log methods.
  23 #undef IPC_STRUCT_TRAITS_BEGIN
  24 #undef IPC_STRUCT_TRAITS_MEMBER
  25 #undef IPC_STRUCT_TRAITS_PARENT
  26 #undef IPC_STRUCT_TRAITS_END
  27 #define IPC_STRUCT_TRAITS_BEGIN(struct_name) \
  28   void ParamTraits<struct_name>::Log(const param_type& p, std::string* l) { \
  29     bool needs_comma = false; \
  30     l->append("(");
  31 #define IPC_STRUCT_TRAITS_MEMBER(name) \
  32     if (needs_comma) \
  33       l->append(", "); \
  34     LogParam(p.name, l); \
  35     needs_comma = true;
  36 #define IPC_STRUCT_TRAITS_PARENT(type) \
  37     if (needs_comma) \
  38       l->append(", "); \
  39       ParamTraits<type>::Log(p, l); \
  40       needs_comma = true;
  41 #define IPC_STRUCT_TRAITS_END() \
  42     l->append(")"); \
  43   }
  44
  45 #undef IPC_ENUM_TRAITS
  46 #define IPC_ENUM_TRAITS(enum_name) \
  47   void ParamTraits<enum_name>::Log(const param_type& p, std::string* l) { \
  48     LogParam(static_cast<int>(p), l); \
  49   }
  50
  51 #endif  // IPC_PARAM_TRAITS_LOG_MACROS_H_
  52