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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef IPC_PARAM_TRAITS_MACROS_H_
#define IPC_PARAM_TRAITS_MACROS_H_
#include <string>
#include <type_traits>
// Traits generation for structs.
#define IPC_STRUCT_TRAITS_BEGIN(struct_name) \
namespace IPC { \
template <> \
struct IPC_MESSAGE_EXPORT ParamTraits<struct_name> { \
typedef struct_name param_type; \
static void Write(base::Pickle* m, const param_type& p); \
static bool Read(const base::Pickle* m, \
base::PickleIterator* iter, \
param_type* p); \
static void Log(const param_type& p, std::string* l); \
}; \
}
#define IPC_STRUCT_TRAITS_MEMBER(name)
#define IPC_STRUCT_TRAITS_PARENT(type)
#define IPC_STRUCT_TRAITS_END()
// Convenience macro for defining enumerated type traits for types which are
// not range-checked by the IPC system. The author of the message handlers
// is responsible for all validation. This macro should not need to be
// subsequently redefined.
#define IPC_ENUM_TRAITS(type) \
IPC_ENUM_TRAITS_VALIDATE(type, true)
// Convenience macro for defining enumerated type traits for types which are
// range-checked by the IPC system to be in the range of 0..maxvalue inclusive.
// This macro should not need to be subsequently redefined.
#define IPC_ENUM_TRAITS_MAX_VALUE(type, maxvalue) \
IPC_ENUM_TRAITS_MIN_MAX_VALUE(type, 0, maxvalue)
// Convenience macro for defining enumerated type traits for types which are
// range-checked by the IPC system to be in the range of minvalue..maxvalue
// inclusive. This macro should not need to be subsequently redefined.
#define IPC_ENUM_TRAITS_MIN_MAX_VALUE(typ, minvalue, maxvalue) \
IPC_ENUM_TRAITS_VALIDATE( \
typ, (static_cast<std::underlying_type<typ>::type>(value) >= \
static_cast<std::underlying_type<typ>::type>(minvalue) && \
static_cast<std::underlying_type<typ>::type>(value) <= \
static_cast<std::underlying_type<typ>::type>(maxvalue)))
// Traits generation for enums. This macro may be redefined later.
#define IPC_ENUM_TRAITS_VALIDATE(enum_name, validation_expression) \
namespace IPC { \
template <> \
struct IPC_MESSAGE_EXPORT ParamTraits<enum_name> { \
typedef enum_name param_type; \
static void Write(base::Pickle* m, const param_type& p); \
static bool Read(const base::Pickle* m, \
base::PickleIterator* iter, \
param_type* p); \
static void Log(const param_type& p, std::string* l); \
}; \
}
#endif // IPC_PARAM_TRAITS_MACROS_H_
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