//------------------------------------------------------------------------
// Project : SDK Base
// Version : 1.0
//
// Category : Helpers
// Filename : base/source/fstdmethods.h
// Created by : Steinberg, 2007
// Description : Convenient macros to create setter and getter methods.
//
//-----------------------------------------------------------------------------
// LICENSE
// (c) 2018, Steinberg Media Technologies GmbH, All Rights Reserved
//-----------------------------------------------------------------------------
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
// * Redistributions of source code must retain the above copyright notice,
// this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright notice,
// this list of conditions and the following disclaimer in the documentation
// and/or other materials provided with the distribution.
// * Neither the name of the Steinberg Media Technologies nor the names of its
// contributors may be used to endorse or promote products derived from this
// software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
// LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
// OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
// OF THE POSSIBILITY OF SUCH DAMAGE.
//-----------------------------------------------------------------------------
//------------------------------------------------------------------------
/** @file base/source/fstdmethods.h
Convenient macros to create setter and getter methods. */
//------------------------------------------------------------------------
#pragma once
//----------------------------------------------------------------------------------
/** @name Methods for flags.
Macros to create setter and getter methods for flags.
Usage example with DEFINE_STATE:
\code
class MyClass
{
public:
MyClass () : flags (0) {}
DEFINE_FLAG (flags, isFlagged, 1<<0)
DEFINE_FLAG (flags, isMine, 1<<1)
private:
uint32 flags;
};
void someFunction ()
{
MyClass c;
if (c.isFlagged ()) // check the flag
c.isFlagged (false); // set the flag
}
\endcode
*/
//----------------------------------------------------------------------------------
///@{
/** Create Methods with @c get and @c set prefix. */
#define DEFINE_STATE(flagVar,methodName,value)\
void set##methodName (bool state) { if (state) flagVar |= (value); else flagVar &= ~(value); }\
bool get##methodName ()const { return (flagVar & (value)) != 0; }
/** Create Methods with @c get prefix.
There is only a 'get' method. */
#define DEFINE_GETSTATE(flagVar,methodName,value)\
bool get##methodName ()const { return (flagVar & (value)) != 0; }
/** Create Methods.
Same name for the getter and setter. */
#define DEFINE_FLAG(flagVar,methodName,value)\
void methodName (bool state) { if (state) flagVar |= (value); else flagVar &= ~(value); }\
bool methodName ()const { return (flagVar & (value)) != 0; }
/** Create Methods.
There is only a 'get' method. */
#define DEFINE_GETFLAG(flagVar,methodName,value)\
bool methodName ()const { return (flagVar & (value)) != 0; }
/** Create @c static Methods.
Same name for the getter and setter. */
#define DEFINE_FLAG_STATIC(flagVar,methodName,value)\
static void methodName (bool __state) { if (__state) flagVar |= (value); else flagVar &= ~(value); }\
static bool methodName () { return (flagVar & (value)) != 0; }
///@}
//----------------------------------------------------------------------------------
/** @name Methods for data members.
Macros to create setter and getter methods for class members.
Examples:
\code
class MyClass
{
public:
DATA_MEMBER (double, distance, Distance)
STRING_MEMBER (Steinberg::String, name, Name)
SHARED_MEMBER (FUnknown, userData, UserData)
CLASS_MEMBER (Steinberg::Buffer, bufferData, BufferData)
POINTER_MEMBER (Steinberg::FObject, refOnly, RefOnly)
};
\endcode
*/
//--------------------------------------------------------------------------------------
///@{
/** Build-in member (pass by value). */
#define DATA_MEMBER(type,varName,methodName)\
public:void set##methodName (type v) { varName = v;}\
type get##methodName ()const { return varName; }\
protected: type varName; public:
//** Object member (pass by reference). */
#define CLASS_MEMBER(type,varName,methodName)\
public:void set##methodName (const type& v){ varName = v;}\
const type& get##methodName () const { return varName; }\
protected: type varName; public:
//** Simple pointer. */
#define POINTER_MEMBER(type,varName,methodName)\
public:void set##methodName (type* ptr){ varName = ptr;}\
type* get##methodName ()const { return varName; }\
private: type* varName; public:
//** Shared member - FUnknown / FObject / etc */
#define SHARED_MEMBER(type,varName,methodName)\
public:void set##methodName (type* v){ varName = v;}\
type* get##methodName ()const { return varName; }\
private: IPtr varName; public:
//** Owned member - FUnknown / FObject / CmObject etc */
#define OWNED_MEMBER(type,varName,methodName)\
public:void set##methodName (type* v){ varName = v;}\
type* get##methodName ()const { return varName; }\
private: OPtr varName; public:
//** tchar* / String class member - set by const tchar*, return by reference */
#define STRING_MEMBER(type,varName,methodName)\
public:void set##methodName (const tchar* v){ varName = v;}\
const type& get##methodName () const { return varName; }\
protected: type varName; public:
//** char8* / String class member - set by const char8*, return by reference */
#define STRING8_MEMBER(type,varName,methodName)\
public:void set##methodName (const char8* v){ varName = v;}\
const type& get##methodName () const { return varName; }\
protected: type varName; public:
//** Standard String Member Steinberg::String */
#define STRING_MEMBER_STD(varName,methodName) STRING_MEMBER(Steinberg::String,varName,methodName)
#define STRING8_MEMBER_STD(varName,methodName) STRING8_MEMBER(Steinberg::String,varName,methodName)
///@}
// obsolete names
#define DEFINE_VARIABLE(type,varName,methodName) DATA_MEMBER(type,varName,methodName)
#define DEFINE_POINTER(type,varName,methodName) POINTER_MEMBER(type,varName,methodName)
#define DEFINE_MEMBER(type,varName,methodName) CLASS_MEMBER(type,varName,methodName)
//------------------------------------------------------------------------
// for implementing comparison operators using a class member or a compare method:
//------------------------------------------------------------------------
#define COMPARE_BY_MEMBER_METHODS(className,memberName) \
bool operator == (const className& other) const {return (memberName == other.memberName);} \
bool operator != (const className& other) const {return (memberName != other.memberName);} \
bool operator < (const className& other) const {return (memberName < other.memberName);} \
bool operator > (const className& other) const {return (memberName > other.memberName);} \
bool operator <= (const className& other) const {return (memberName <= other.memberName);} \
bool operator >= (const className& other) const {return (memberName >= other.memberName);}
#define COMPARE_BY_MEMORY_METHODS(className) \
bool operator == (const className& other) const {return memcmp (this, &other, sizeof (className)) == 0;} \
bool operator != (const className& other) const {return memcmp (this, &other, sizeof (className)) != 0;} \
bool operator < (const className& other) const {return memcmp (this, &other, sizeof (className)) < 0;} \
bool operator > (const className& other) const {return memcmp (this, &other, sizeof (className)) > 0;} \
bool operator <= (const className& other) const {return memcmp (this, &other, sizeof (className)) <= 0;} \
bool operator >= (const className& other) const {return memcmp (this, &other, sizeof (className)) >= 0;}
#define COMPARE_BY_COMPARE_METHOD(className,methodName) \
bool operator == (const className& other) const {return methodName (other) == 0;} \
bool operator != (const className& other) const {return methodName (other) != 0;} \
bool operator < (const className& other) const {return methodName (other) < 0;} \
bool operator > (const className& other) const {return methodName (other) > 0;} \
bool operator <= (const className& other) const {return methodName (other) <= 0; } \
bool operator >= (const className& other) const {return methodName (other) >= 0; }