ipc/param_traits_log_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_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_BEGIN_WITH_PARENT
  17 #undef IPC_STRUCT_MEMBER
  18 #undef IPC_STRUCT_END
  19 #define IPC_STRUCT_BEGIN_WITH_PARENT(struct_name, parent) \
  20   IPC_STRUCT_BEGIN(struct_name)
  21 #define IPC_STRUCT_BEGIN(struct_name) IPC_STRUCT_TRAITS_BEGIN(struct_name)
  22 #define IPC_STRUCT_MEMBER(type, name, ...) IPC_STRUCT_TRAITS_MEMBER(name)
  23 #define IPC_STRUCT_END() IPC_STRUCT_TRAITS_END()
  24
  25 // Set up so next include will generate log methods.
  26 #undef IPC_STRUCT_TRAITS_BEGIN
  27 #undef IPC_STRUCT_TRAITS_MEMBER
  28 #undef IPC_STRUCT_TRAITS_PARENT
  29 #undef IPC_STRUCT_TRAITS_END
  30 #define IPC_STRUCT_TRAITS_BEGIN(struct_name) \
  31   void ParamTraits<struct_name>::Log(const param_type& p, std::string* l) { \
  32     bool needs_comma = false; \
  33     l->append("(");
  34 #define IPC_STRUCT_TRAITS_MEMBER(name) \
  35     if (needs_comma) \
  36       l->append(", "); \
  37     LogParam(p.name, l); \
  38     needs_comma = true;
  39 #define IPC_STRUCT_TRAITS_PARENT(type) \
  40     if (needs_comma) \
  41       l->append(", "); \
  42       ParamTraits<type>::Log(p, l); \
  43       needs_comma = true;
  44 #define IPC_STRUCT_TRAITS_END() \
  45     l->append(")"); \
  46   }
  47
  48 #undef IPC_ENUM_TRAITS
  49 #define IPC_ENUM_TRAITS(enum_name) \
  50   void ParamTraits<enum_name>::Log(const param_type& p, std::string* l) { \
  51     LogParam(static_cast<int>(p), l); \
  52   }
  53
  54 #endif  // IPC_PARAM_TRAITS_LOG_MACROS_H_
  55