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_MACROS_H_ 6 #define IPC_PARAM_TRAITS_MACROS_H_ 7 8 #include <string> 9 10 // Traits generation for structs. 11 #define IPC_STRUCT_TRAITS_BEGIN(struct_name) \ 12 namespace IPC { \ 13 template <> \ 14 struct IPC_MESSAGE_EXPORT ParamTraits<struct_name> { \ 15 typedef struct_name param_type; \ 16 static void Write(Message* m, const param_type& p); \ 17 static bool Read(const Message* m, PickleIterator* iter, param_type* p); \ 18 static void Log(const param_type& p, std::string* l); \ 19 }; \ 20 } 21 22 #define IPC_STRUCT_TRAITS_MEMBER(name) 23 #define IPC_STRUCT_TRAITS_PARENT(type) 24 #define IPC_STRUCT_TRAITS_END() 25 26 // Convenience macro for defining enumerated type traits for types which are 27 // not range-checked by the IPC system. The author of the message handlers 28 // is responsible for all validation. This macro should not need to be 29 // subsequently redefined. 30 #define IPC_ENUM_TRAITS(type) \ 31 IPC_ENUM_TRAITS_VALIDATE(type, true) 32 33 // Convenience macro for defining enumerated type traits for types which are 34 // range-checked by the IPC system to be in the range of 0..maxvalue inclusive. 35 // This macro should not need to be subsequently redefined. 36 #define IPC_ENUM_TRAITS_MAX_VALUE(type, maxvalue) \ 37 IPC_ENUM_TRAITS_MIN_MAX_VALUE(type, 0, maxvalue) 38 39 // Convenience macro for defining enumerated type traits for types which are 40 // range-checked by the IPC system to be in the range of minvalue..maxvalue 41 // inclusive. This macro should not need to be subsequently redefined. 42 #define IPC_ENUM_TRAITS_MIN_MAX_VALUE(type, minvalue, maxvalue) \ 43 IPC_ENUM_TRAITS_VALIDATE(type, (value >= (minvalue) && value <= (maxvalue))) 44 45 // Traits generation for enums. This macro may be redefined later. 46 #define IPC_ENUM_TRAITS_VALIDATE(enum_name, validation_expression) \ 47 namespace IPC { \ 48 template <> \ 49 struct IPC_MESSAGE_EXPORT ParamTraits<enum_name> { \ 50 typedef enum_name param_type; \ 51 static void Write(Message* m, const param_type& p); \ 52 static bool Read(const Message* m, PickleIterator* iter, param_type* p); \ 53 static void Log(const param_type& p, std::string* l); \ 54 }; \ 55 } 56 57 #endif // IPC_PARAM_TRAITS_MACROS_H_ 58 59