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
   8 #include <string>
   9
  10 // Null out all the macros that need nulling.
  11 #include "ipc/ipc_message_null_macros.h"
  12
  13 // STRUCT declarations cause corresponding STRUCT_TRAITS declarations to occur.
  14 #undef IPC_STRUCT_BEGIN
  15 #undef IPC_STRUCT_BEGIN_WITH_PARENT
  16 #undef IPC_STRUCT_MEMBER
  17 #undef IPC_STRUCT_END
  18 #define IPC_STRUCT_BEGIN_WITH_PARENT(struct_name, parent) \
  19   IPC_STRUCT_BEGIN(struct_name)
  20 #define IPC_STRUCT_BEGIN(struct_name) IPC_STRUCT_TRAITS_BEGIN(struct_name)
  21 #define IPC_STRUCT_MEMBER(type, name, ...) IPC_STRUCT_TRAITS_MEMBER(name)
  22 #define IPC_STRUCT_END() IPC_STRUCT_TRAITS_END()
  23
  24 // Set up so next include will generate log methods.
  25 #undef IPC_STRUCT_TRAITS_BEGIN
  26 #undef IPC_STRUCT_TRAITS_MEMBER
  27 #undef IPC_STRUCT_TRAITS_PARENT
  28 #undef IPC_STRUCT_TRAITS_END
  29 #define IPC_STRUCT_TRAITS_BEGIN(struct_name) \
  30   void ParamTraits<struct_name>::Log(const param_type& p, std::string* l) { \
  31     bool needs_comma = false; \
  32     l->append("(");
  33 #define IPC_STRUCT_TRAITS_MEMBER(name) \
  34     if (needs_comma) \
  35       l->append(", "); \
  36     LogParam(p.name, l); \
  37     needs_comma = true;
  38 #define IPC_STRUCT_TRAITS_PARENT(type) \
  39     if (needs_comma) \
  40       l->append(", "); \
  41       ParamTraits<type>::Log(p, l); \
  42       needs_comma = true;
  43 #define IPC_STRUCT_TRAITS_END() \
  44     l->append(")"); \
  45   }
  46
  47 #undef IPC_ENUM_TRAITS
  48 #define IPC_ENUM_TRAITS(enum_name) \
  49   void ParamTraits<enum_name>::Log(const param_type& p, std::string* l) { \
  50     LogParam(static_cast<int>(p), l); \
  51   }
  52
  53 #endif  // IPC_PARAM_TRAITS_LOG_MACROS_H_
  54