1 // Copyright 2012 The Chromium Authors 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 #include <type_traits> 10 11 // Traits generation for structs. 12 #define IPC_STRUCT_TRAITS_BEGIN(struct_name) \ 13 namespace IPC { \ 14 template <> \ 15 struct IPC_MESSAGE_EXPORT ParamTraits<struct_name> { \ 16 typedef struct_name param_type; \ 17 static void Write(base::Pickle* m, const param_type& p); \ 18 static bool Read(const base::Pickle* m, \ 19 base::PickleIterator* iter, \ 20 param_type* p); \ 21 static void Log(const param_type& p, std::string* l); \ 22 }; \ 23 } 24 25 #define IPC_STRUCT_TRAITS_MEMBER(name) 26 #define IPC_STRUCT_TRAITS_PARENT(type) 27 #define IPC_STRUCT_TRAITS_END() 28 29 // Convenience macro for defining enumerated type traits for types which are 30 // not range-checked by the IPC system. The author of the message handlers 31 // is responsible for all validation. This macro should not need to be 32 // subsequently redefined. 33 #define IPC_ENUM_TRAITS(type) \ 34 IPC_ENUM_TRAITS_VALIDATE(type, true) 35 36 // Convenience macro for defining enumerated type traits for types which are 37 // range-checked by the IPC system to be in the range of 0..maxvalue inclusive. 38 // This macro should not need to be subsequently redefined. 39 #define IPC_ENUM_TRAITS_MAX_VALUE(type, maxvalue) \ 40 IPC_ENUM_TRAITS_MIN_MAX_VALUE(type, 0, maxvalue) 41 42 // Convenience macro for defining enumerated type traits for types which are 43 // range-checked by the IPC system to be in the range of minvalue..maxvalue 44 // inclusive. This macro should not need to be subsequently redefined. 45 #define IPC_ENUM_TRAITS_MIN_MAX_VALUE(typ, minvalue, maxvalue) \ 46 IPC_ENUM_TRAITS_VALIDATE( \ 47 typ, (static_cast<std::underlying_type<typ>::type>(value) >= \ 48 static_cast<std::underlying_type<typ>::type>(minvalue) && \ 49 static_cast<std::underlying_type<typ>::type>(value) <= \ 50 static_cast<std::underlying_type<typ>::type>(maxvalue))) 51 52 // Traits generation for enums. This macro may be redefined later. 53 #define IPC_ENUM_TRAITS_VALIDATE(enum_name, validation_expression) \ 54 namespace IPC { \ 55 template <> \ 56 struct IPC_MESSAGE_EXPORT ParamTraits<enum_name> { \ 57 typedef enum_name param_type; \ 58 static void Write(base::Pickle* m, const param_type& p); \ 59 static bool Read(const base::Pickle* m, \ 60 base::PickleIterator* iter, \ 61 param_type* p); \ 62 static void Log(const param_type& p, std::string* l); \ 63 }; \ 64 } 65 66 #endif // IPC_PARAM_TRAITS_MACROS_H_ 67 68