2109 lines
95 KiB
C++
2109 lines
95 KiB
C++
// FastDelegate.h
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// Efficient delegates in C++ that generate only two lines of asm code!
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// Documentation is found at http://www.codeproject.com/cpp/FastDelegate.asp
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//
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// - Don Clugston, Mar 2004.
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// Major contributions were made by Jody Hagins.
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// History:
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// 24-Apr-04 1.0 * Submitted to CodeProject.
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// 28-Apr-04 1.1 * Prevent most unsafe uses of evil static function hack.
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// * Improved syntax for horrible_cast (thanks Paul Bludov).
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// * Tested on Metrowerks MWCC and Intel ICL (IA32)
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// * Compiled, but not run, on Comeau C++ and Intel Itanium ICL.
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// 27-Jun-04 1.2 * Now works on Borland C++ Builder 5.5
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// * Now works on /clr "managed C++" code on VC7, VC7.1
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// * Comeau C++ now compiles without warnings.
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// * Prevent the virtual inheritance case from being used on
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// VC6 and earlier, which generate incorrect code.
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// * Improved warning and error messages. Non-standard hacks
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// now have compile-time checks to make them safer.
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// * implicit_cast used instead of static_cast in many cases.
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// * If calling a const member function, a const class pointer can be used.
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// * MakeDelegate() global helper function added to simplify pass-by-value.
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// * Added fastdelegate.clear()
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// 16-Jul-04 1.2.1* Workaround for gcc bug (const member function pointers in templates)
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// 30-Oct-04 1.3 * Support for (non-void) return values.
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// * No more workarounds in client code!
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// MSVC and Intel now use a clever hack invented by John Dlugosz:
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// - The FASTDELEGATEDECLARE workaround is no longer necessary.
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// - No more warning messages for VC6
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// * Less use of macros. Error messages should be more comprehensible.
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// * Added include guards
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// * Added FastDelegate::empty() to test if invocation is safe (Thanks Neville Franks).
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// * Now tested on VS 2005 Express Beta, PGI C++
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// 24-Dec-04 1.4 * Added DelegateMemento, to allow collections of disparate delegates.
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// * <,>,<=,>= comparison operators to allow storage in ordered containers.
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// * Substantial reduction of code size, especially the 'Closure' class.
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// * Standardised all the compiler-specific workarounds.
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// * MFP conversion now works for CodePlay (but not yet supported in the full code).
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// * Now compiles without warnings on _any_ supported compiler, including BCC 5.5.1
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// * New syntax: FastDelegate< int (char *, double) >.
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// 14-Feb-05 1.4.1* Now treats =0 as equivalent to .clear(), ==0 as equivalent to .empty(). (Thanks elfric).
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// * Now tested on Intel ICL for AMD64, VS2005 Beta for AMD64 and Itanium.
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// 30-Mar-05 1.5 * Safebool idiom: "if (dg)" is now equivalent to "if (!dg.empty())"
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// * Fully supported by CodePlay VectorC
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// * Bugfix for Metrowerks: empty() was buggy because a valid MFP can be 0 on MWCC!
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// * More optimal assignment,== and != operators for static function pointers.
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#ifndef FASTDELEGATE_H
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#define FASTDELEGATE_H
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#if _MSC_VER > 1000
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#pragma once
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#endif // _MSC_VER > 1000
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#include <memory.h> // to allow <,> comparisons
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////////////////////////////////////////////////////////////////////////////////
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// Configuration options
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//
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////////////////////////////////////////////////////////////////////////////////
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// Uncomment the following #define for optimally-sized delegates.
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// In this case, the generated asm code is almost identical to the code you'd get
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// if the compiler had native support for delegates.
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// It will not work on systems where sizeof(dataptr) < sizeof(codeptr).
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// Thus, it will not work for DOS compilers using the medium model.
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// It will also probably fail on some DSP systems.
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#define FASTDELEGATE_USESTATICFUNCTIONHACK
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// Uncomment the next line to allow function declarator syntax.
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// It is automatically enabled for those compilers where it is known to work.
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//#define FASTDELEGATE_ALLOW_FUNCTION_TYPE_SYNTAX
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////////////////////////////////////////////////////////////////////////////////
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// Compiler identification for workarounds
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//
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////////////////////////////////////////////////////////////////////////////////
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// Compiler identification. It's not easy to identify Visual C++ because
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// many vendors fraudulently define Microsoft's identifiers.
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#if defined(_MSC_VER) && !defined(__MWERKS__) && !defined(__VECTOR_C) && !defined(__ICL) && !defined(__BORLANDC__)
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#define FASTDLGT_ISMSVC
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#if (_MSC_VER <1300) // Many workarounds are required for VC6.
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#define FASTDLGT_VC6
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#pragma warning(disable:4786) // disable this ridiculous warning
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#endif
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#endif
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// Does the compiler uses Microsoft's member function pointer structure?
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// If so, it needs special treatment.
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// Metrowerks CodeWarrior, Intel, and CodePlay fraudulently define Microsoft's
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// identifier, _MSC_VER. We need to filter Metrowerks out.
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#if defined(_MSC_VER) && !defined(__MWERKS__)
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#define FASTDLGT_MICROSOFT_MFP
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#if !defined(__VECTOR_C)
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// CodePlay doesn't have the __single/multi/virtual_inheritance keywords
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#define FASTDLGT_HASINHERITANCE_KEYWORDS
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#endif
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#endif
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// Does it allow function declarator syntax? The following compilers are known to work:
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#if defined(FASTDLGT_ISMSVC) && (_MSC_VER >=1310) // VC 7.1
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#define FASTDELEGATE_ALLOW_FUNCTION_TYPE_SYNTAX
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#endif
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// Gcc(2.95+), and versions of Digital Mars, Intel and Comeau in common use.
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#if defined (__DMC__) || defined(__GNUC__) || defined(__ICL) || defined(__COMO__)
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#define FASTDELEGATE_ALLOW_FUNCTION_TYPE_SYNTAX
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#endif
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// It works on Metrowerks MWCC 3.2.2. From boost.Config it should work on earlier ones too.
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#if defined (__MWERKS__)
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#define FASTDELEGATE_ALLOW_FUNCTION_TYPE_SYNTAX
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#endif
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#ifdef __GNUC__ // Workaround GCC bug #8271
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// At present, GCC doesn't recognize constness of MFPs in templates
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#define FASTDELEGATE_GCC_BUG_8271
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#endif
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////////////////////////////////////////////////////////////////////////////////
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// General tricks used in this code
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//
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// (a) Error messages are generated by typdefing an array of negative size to
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// generate compile-time errors.
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// (b) Warning messages on MSVC are generated by declaring unused variables, and
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// enabling the "variable XXX is never used" warning.
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// (c) Unions are used in a few compiler-specific cases to perform illegal casts.
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// (d) For Microsoft and Intel, when adjusting the 'this' pointer, it's cast to
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// (char *) first to ensure that the correct number of *bytes* are added.
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//
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////////////////////////////////////////////////////////////////////////////////
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// Helper templates
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//
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////////////////////////////////////////////////////////////////////////////////
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namespace fastdelegate {
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namespace detail { // we'll hide the implementation details in a nested namespace.
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// implicit_cast< >
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// I believe this was originally going to be in the C++ standard but
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// was left out by accident. It's even milder than static_cast.
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// I use it instead of static_cast<> to emphasize that I'm not doing
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// anything nasty.
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// Usage is identical to static_cast<>
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template <class OutputClass, class InputClass>
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inline OutputClass implicit_cast(InputClass input){
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return input;
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}
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// horrible_cast< >
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// This is truly evil. It completely subverts C++'s type system, allowing you
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// to cast from any class to any other class. Technically, using a union
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// to perform the cast is undefined behaviour (even in C). But we can see if
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// it is OK by checking that the union is the same size as each of its members.
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// horrible_cast<> should only be used for compiler-specific workarounds.
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// Usage is identical to reinterpret_cast<>.
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// This union is declared outside the horrible_cast because BCC 5.5.1
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// can't inline a function with a nested class, and gives a warning.
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template <class OutputClass, class InputClass>
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union horrible_union{
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OutputClass out;
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InputClass in;
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};
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template <class OutputClass, class InputClass>
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inline OutputClass horrible_cast(const InputClass input){
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horrible_union<OutputClass, InputClass> u;
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// Cause a compile-time error if in, out and u are not the same size.
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// If the compile fails here, it means the compiler has peculiar
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// unions which would prevent the cast from working.
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typedef int ERROR_CantUseHorrible_cast[sizeof(InputClass)==sizeof(u)
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&& sizeof(InputClass)==sizeof(OutputClass) ? 1 : -1];
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u.in = input;
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return u.out;
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}
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////////////////////////////////////////////////////////////////////////////////
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// Workarounds
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//
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////////////////////////////////////////////////////////////////////////////////
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// Backwards compatibility: This macro used to be necessary in the virtual inheritance
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// case for Intel and Microsoft. Now it just forward-declares the class.
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#define FASTDELEGATEDECLARE(CLASSNAME) class CLASSNAME;
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// Prevent use of the static function hack with the DOS medium model.
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#ifdef __MEDIUM__
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#undef FASTDELEGATE_USESTATICFUNCTIONHACK
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#endif
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// DefaultVoid - a workaround for 'void' templates in VC6.
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//
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// (1) VC6 and earlier do not allow 'void' as a default template argument.
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// (2) They also doesn't allow you to return 'void' from a function.
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//
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// Workaround for (1): Declare a dummy type 'DefaultVoid' which we use
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// when we'd like to use 'void'. We convert it into 'void' and back
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// using the templates DefaultVoidToVoid<> and VoidToDefaultVoid<>.
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// Workaround for (2): On VC6, the code for calling a void function is
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// identical to the code for calling a non-void function in which the
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// return value is never used, provided the return value is returned
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// in the EAX register, rather than on the stack.
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// This is true for most fundamental types such as int, enum, void *.
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// Const void * is the safest option since it doesn't participate
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// in any automatic conversions. But on a 16-bit compiler it might
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// cause extra code to be generated, so we disable it for all compilers
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// except for VC6 (and VC5).
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#ifdef FASTDLGT_VC6
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// VC6 workaround
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typedef const void * DefaultVoid;
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#else
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// On any other compiler, just use a normal void.
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typedef void DefaultVoid;
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#endif
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// Translate from 'DefaultVoid' to 'void'.
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// Everything else is unchanged
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template <class T>
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struct DefaultVoidToVoid { typedef T type; };
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template <>
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struct DefaultVoidToVoid<DefaultVoid> { typedef void type; };
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// Translate from 'void' into 'DefaultVoid'
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// Everything else is unchanged
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template <class T>
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struct VoidToDefaultVoid { typedef T type; };
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template <>
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struct VoidToDefaultVoid<void> { typedef DefaultVoid type; };
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////////////////////////////////////////////////////////////////////////////////
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// Fast Delegates, part 1:
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//
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// Conversion of member function pointer to a standard form
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//
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////////////////////////////////////////////////////////////////////////////////
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// GenericClass is a fake class, ONLY used to provide a type.
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// It is vitally important that it is never defined, so that the compiler doesn't
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// think it can optimize the invocation. For example, Borland generates simpler
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// code if it knows the class only uses single inheritance.
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// Compilers using Microsoft's structure need to be treated as a special case.
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#ifdef FASTDLGT_MICROSOFT_MFP
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#ifdef FASTDLGT_HASINHERITANCE_KEYWORDS
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// For Microsoft and Intel, we want to ensure that it's the most efficient type of MFP
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// (4 bytes), even when the /vmg option is used. Declaring an empty class
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// would give 16 byte pointers in this case....
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class __single_inheritance GenericClass;
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#endif
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// ...but for Codeplay, an empty class *always* gives 4 byte pointers.
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// If compiled with the /clr option ("managed C++"), the JIT compiler thinks
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// it needs to load GenericClass before it can call any of its functions,
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// (compiles OK but crashes at runtime!), so we need to declare an
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// empty class to make it happy.
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// Codeplay and VC4 can't cope with the unknown_inheritance case either.
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class GenericClass {};
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#else
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class GenericClass;
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#endif
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// The size of a single inheritance member function pointer.
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const int SINGLE_MEMFUNCPTR_SIZE = sizeof(void (GenericClass::*)());
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// SimplifyMemFunc< >::Convert()
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//
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// A template function that converts an arbitrary member function pointer into the
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// simplest possible form of member function pointer, using a supplied 'this' pointer.
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// According to the standard, this can be done legally with reinterpret_cast<>.
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// For (non-standard) compilers which use member function pointers which vary in size
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// depending on the class, we need to use knowledge of the internal structure of a
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// member function pointer, as used by the compiler. Template specialization is used
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// to distinguish between the sizes. Because some compilers don't support partial
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// template specialisation, I use full specialisation of a wrapper struct.
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// general case -- don't know how to convert it. Force a compile failure
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template <int N>
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struct SimplifyMemFunc {
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template <class X, class XFuncType, class GenericMemFuncType>
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inline static GenericClass *Convert(X *pthis, XFuncType function_to_bind,
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GenericMemFuncType &bound_func) {
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// Unsupported member function type -- force a compile failure.
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// (it's illegal to have a array with negative size).
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typedef char ERROR_Unsupported_member_function_pointer_on_this_compiler[N-100];
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return 0;
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}
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};
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// For compilers where all member func ptrs are the same size, everything goes here.
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// For non-standard compilers, only single_inheritance classes go here.
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template <>
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struct SimplifyMemFunc<SINGLE_MEMFUNCPTR_SIZE> {
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template <class X, class XFuncType, class GenericMemFuncType>
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inline static GenericClass *Convert(X *pthis, XFuncType function_to_bind,
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GenericMemFuncType &bound_func) {
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#if defined __DMC__
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// Digital Mars doesn't allow you to cast between abitrary PMF's,
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// even though the standard says you can. The 32-bit compiler lets you
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// static_cast through an int, but the DOS compiler doesn't.
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bound_func = horrible_cast<GenericMemFuncType>(function_to_bind);
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#else
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bound_func = reinterpret_cast<GenericMemFuncType>(function_to_bind);
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#endif
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return reinterpret_cast<GenericClass *>(pthis);
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}
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};
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////////////////////////////////////////////////////////////////////////////////
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// Fast Delegates, part 1b:
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//
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// Workarounds for Microsoft and Intel
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//
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////////////////////////////////////////////////////////////////////////////////
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// Compilers with member function pointers which violate the standard (MSVC, Intel, Codeplay),
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// need to be treated as a special case.
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#ifdef FASTDLGT_MICROSOFT_MFP
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// We use unions to perform horrible_casts. I would like to use #pragma pack(push, 1)
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// at the start of each function for extra safety, but VC6 seems to ICE
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// intermittently if you do this inside a template.
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// __multiple_inheritance classes go here
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// Nasty hack for Microsoft and Intel (IA32 and Itanium)
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template<>
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struct SimplifyMemFunc< SINGLE_MEMFUNCPTR_SIZE + sizeof(int) > {
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template <class X, class XFuncType, class GenericMemFuncType>
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inline static GenericClass *Convert(X *pthis, XFuncType function_to_bind,
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GenericMemFuncType &bound_func) {
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// We need to use a horrible_cast to do this conversion.
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// In MSVC, a multiple inheritance member pointer is internally defined as:
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union {
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XFuncType func;
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struct {
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GenericMemFuncType funcaddress; // points to the actual member function
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int delta; // #BYTES to be added to the 'this' pointer
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}s;
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} u;
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// Check that the horrible_cast will work
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typedef int ERROR_CantUsehorrible_cast[sizeof(function_to_bind)==sizeof(u.s)? 1 : -1];
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u.func = function_to_bind;
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bound_func = u.s.funcaddress;
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return reinterpret_cast<GenericClass *>(reinterpret_cast<char *>(pthis) + u.s.delta);
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}
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};
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// virtual inheritance is a real nuisance. It's inefficient and complicated.
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// On MSVC and Intel, there isn't enough information in the pointer itself to
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// enable conversion to a closure pointer. Earlier versions of this code didn't
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// work for all cases, and generated a compile-time error instead.
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// But a very clever hack invented by John M. Dlugosz solves this problem.
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// My code is somewhat different to his: I have no asm code, and I make no
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// assumptions about the calling convention that is used.
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// In VC++ and ICL, a virtual_inheritance member pointer
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// is internally defined as:
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struct MicrosoftVirtualMFP {
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void (GenericClass::*codeptr)(); // points to the actual member function
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int delta; // #bytes to be added to the 'this' pointer
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int vtable_index; // or 0 if no virtual inheritance
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};
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// The CRUCIAL feature of Microsoft/Intel MFPs which we exploit is that the
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// m_codeptr member is *always* called, regardless of the values of the other
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// members. (This is *not* true for other compilers, eg GCC, which obtain the
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// function address from the vtable if a virtual function is being called).
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// Dlugosz's trick is to make the codeptr point to a probe function which
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// returns the 'this' pointer that was used.
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// Define a generic class that uses virtual inheritance.
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// It has a trival member function that returns the value of the 'this' pointer.
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struct GenericVirtualClass : virtual public GenericClass
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{
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typedef GenericVirtualClass * (GenericVirtualClass::*ProbePtrType)();
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GenericVirtualClass * GetThis() { return this; }
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};
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// __virtual_inheritance classes go here
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template <>
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struct SimplifyMemFunc<SINGLE_MEMFUNCPTR_SIZE + 2*sizeof(int) >
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{
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template <class X, class XFuncType, class GenericMemFuncType>
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inline static GenericClass *Convert(X *pthis, XFuncType function_to_bind,
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GenericMemFuncType &bound_func) {
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union {
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XFuncType func;
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GenericClass* (X::*ProbeFunc)();
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MicrosoftVirtualMFP s;
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} u;
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u.func = function_to_bind;
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bound_func = reinterpret_cast<GenericMemFuncType>(u.s.codeptr);
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union {
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GenericVirtualClass::ProbePtrType virtfunc;
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MicrosoftVirtualMFP s;
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} u2;
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// Check that the horrible_cast<>s will work
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typedef int ERROR_CantUsehorrible_cast[sizeof(function_to_bind)==sizeof(u.s)
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&& sizeof(function_to_bind)==sizeof(u.ProbeFunc)
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&& sizeof(u2.virtfunc)==sizeof(u2.s) ? 1 : -1];
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// Unfortunately, taking the address of a MF prevents it from being inlined, so
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// this next line can't be completely optimised away by the compiler.
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u2.virtfunc = &GenericVirtualClass::GetThis;
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u.s.codeptr = u2.s.codeptr;
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return (pthis->*u.ProbeFunc)();
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}
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};
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#if (_MSC_VER <1300)
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// Nasty hack for Microsoft Visual C++ 6.0
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// unknown_inheritance classes go here
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// There is a compiler bug in MSVC6 which generates incorrect code in this case!!
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template <>
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struct SimplifyMemFunc<SINGLE_MEMFUNCPTR_SIZE + 3*sizeof(int) >
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{
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template <class X, class XFuncType, class GenericMemFuncType>
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inline static GenericClass *Convert(X *pthis, XFuncType function_to_bind,
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GenericMemFuncType &bound_func) {
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// There is an apalling but obscure compiler bug in MSVC6 and earlier:
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// vtable_index and 'vtordisp' are always set to 0 in the
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// unknown_inheritance case!
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// This means that an incorrect function could be called!!!
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// Compiling with the /vmg option leads to potentially incorrect code.
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// This is probably the reason that the IDE has a user interface for specifying
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// the /vmg option, but it is disabled - you can only specify /vmg on
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// the command line. In VC1.5 and earlier, the compiler would ICE if it ever
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// encountered this situation.
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// It is OK to use the /vmg option if /vmm or /vms is specified.
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// Fortunately, the wrong function is only called in very obscure cases.
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// It only occurs when a derived class overrides a virtual function declared
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// in a virtual base class, and the member function
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// points to the *Derived* version of that function. The problem can be
|
|
// completely averted in 100% of cases by using the *Base class* for the
|
|
// member fpointer. Ie, if you use the base class as an interface, you'll
|
|
// stay out of trouble.
|
|
// Occasionally, you might want to point directly to a derived class function
|
|
// that isn't an override of a base class. In this case, both vtable_index
|
|
// and 'vtordisp' are zero, but a virtual_inheritance pointer will be generated.
|
|
// We can generate correct code in this case. To prevent an incorrect call from
|
|
// ever being made, on MSVC6 we generate a warning, and call a function to
|
|
// make the program crash instantly.
|
|
typedef char ERROR_VC6CompilerBug[-100];
|
|
return 0;
|
|
}
|
|
};
|
|
|
|
|
|
#else
|
|
|
|
// Nasty hack for Microsoft and Intel (IA32 and Itanium)
|
|
// unknown_inheritance classes go here
|
|
// This is probably the ugliest bit of code I've ever written. Look at the casts!
|
|
// There is a compiler bug in MSVC6 which prevents it from using this code.
|
|
template <>
|
|
struct SimplifyMemFunc<SINGLE_MEMFUNCPTR_SIZE + 3*sizeof(int) >
|
|
{
|
|
template <class X, class XFuncType, class GenericMemFuncType>
|
|
inline static GenericClass *Convert(X *pthis, XFuncType function_to_bind,
|
|
GenericMemFuncType &bound_func) {
|
|
// The member function pointer is 16 bytes long. We can't use a normal cast, but
|
|
// we can use a union to do the conversion.
|
|
union {
|
|
XFuncType func;
|
|
// In VC++ and ICL, an unknown_inheritance member pointer
|
|
// is internally defined as:
|
|
struct {
|
|
GenericMemFuncType m_funcaddress; // points to the actual member function
|
|
int delta; // #bytes to be added to the 'this' pointer
|
|
int vtordisp; // #bytes to add to 'this' to find the vtable
|
|
int vtable_index; // or 0 if no virtual inheritance
|
|
} s;
|
|
} u;
|
|
// Check that the horrible_cast will work
|
|
typedef int ERROR_CantUsehorrible_cast[sizeof(XFuncType)==sizeof(u.s)? 1 : -1];
|
|
u.func = function_to_bind;
|
|
bound_func = u.s.funcaddress;
|
|
int virtual_delta = 0;
|
|
if (u.s.vtable_index) { // Virtual inheritance is used
|
|
// First, get to the vtable.
|
|
// It is 'vtordisp' bytes from the start of the class.
|
|
const int * vtable = *reinterpret_cast<const int *const*>(
|
|
reinterpret_cast<const char *>(pthis) + u.s.vtordisp );
|
|
|
|
// 'vtable_index' tells us where in the table we should be looking.
|
|
virtual_delta = u.s.vtordisp + *reinterpret_cast<const int *>(
|
|
reinterpret_cast<const char *>(vtable) + u.s.vtable_index);
|
|
}
|
|
// The int at 'virtual_delta' gives us the amount to add to 'this'.
|
|
// Finally we can add the three components together. Phew!
|
|
return reinterpret_cast<GenericClass *>(
|
|
reinterpret_cast<char *>(pthis) + u.s.delta + virtual_delta);
|
|
};
|
|
};
|
|
#endif // MSVC 7 and greater
|
|
|
|
#endif // MS/Intel hacks
|
|
|
|
} // namespace detail
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Fast Delegates, part 2:
|
|
//
|
|
// Define the delegate storage, and cope with static functions
|
|
//
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// DelegateMemento -- an opaque structure which can hold an arbitary delegate.
|
|
// It knows nothing about the calling convention or number of arguments used by
|
|
// the function pointed to.
|
|
// It supplies comparison operators so that it can be stored in STL collections.
|
|
// It cannot be set to anything other than null, nor invoked directly:
|
|
// it must be converted to a specific delegate.
|
|
|
|
// Implementation:
|
|
// There are two possible implementations: the Safe method and the Evil method.
|
|
// DelegateMemento - Safe version
|
|
//
|
|
// This implementation is standard-compliant, but a bit tricky.
|
|
// A static function pointer is stored inside the class.
|
|
// Here are the valid values:
|
|
// +-- Static pointer --+--pThis --+-- pMemFunc-+-- Meaning------+
|
|
// | 0 | 0 | 0 | Empty |
|
|
// | !=0 |(dontcare)| Invoker | Static function|
|
|
// | 0 | !=0 | !=0* | Method call |
|
|
// +--------------------+----------+------------+----------------+
|
|
// * For Metrowerks, this can be 0. (first virtual function in a
|
|
// single_inheritance class).
|
|
// When stored stored inside a specific delegate, the 'dontcare' entries are replaced
|
|
// with a reference to the delegate itself. This complicates the = and == operators
|
|
// for the delegate class.
|
|
|
|
// DelegateMemento - Evil version
|
|
//
|
|
// For compilers where data pointers are at least as big as code pointers, it is
|
|
// possible to store the function pointer in the this pointer, using another
|
|
// horrible_cast. In this case the DelegateMemento implementation is simple:
|
|
// +--pThis --+-- pMemFunc-+-- Meaning---------------------+
|
|
// | 0 | 0 | Empty |
|
|
// | !=0 | !=0* | Static function or method call|
|
|
// +----------+------------+-------------------------------+
|
|
// * For Metrowerks, this can be 0. (first virtual function in a
|
|
// single_inheritance class).
|
|
// Note that the Sun C++ and MSVC documentation explicitly state that they
|
|
// support static_cast between void * and function pointers.
|
|
|
|
class DelegateMemento {
|
|
protected:
|
|
// the data is protected, not private, because many
|
|
// compilers have problems with template friends.
|
|
typedef void (detail::GenericClass::*GenericMemFuncType)(); // arbitrary MFP.
|
|
detail::GenericClass *m_pthis;
|
|
GenericMemFuncType m_pFunction;
|
|
|
|
#if !defined(FASTDELEGATE_USESTATICFUNCTIONHACK)
|
|
typedef void (*GenericFuncPtr)(); // arbitrary code pointer
|
|
GenericFuncPtr m_pStaticFunction;
|
|
#endif
|
|
|
|
public:
|
|
#if !defined(FASTDELEGATE_USESTATICFUNCTIONHACK)
|
|
DelegateMemento() : m_pthis(0), m_pFunction(0), m_pStaticFunction(0) {};
|
|
void clear() {
|
|
m_pthis=0; m_pFunction=0; m_pStaticFunction=0;
|
|
}
|
|
#else
|
|
DelegateMemento() : m_pthis(0), m_pFunction(0) {};
|
|
void clear() { m_pthis=0; m_pFunction=0; }
|
|
#endif
|
|
public:
|
|
#if !defined(FASTDELEGATE_USESTATICFUNCTIONHACK)
|
|
inline bool IsEqual (const DelegateMemento &x) const{
|
|
// We have to cope with the static function pointers as a special case
|
|
if (m_pFunction!=x.m_pFunction) return false;
|
|
// the static function ptrs must either both be equal, or both be 0.
|
|
if (m_pStaticFunction!=x.m_pStaticFunction) return false;
|
|
if (m_pStaticFunction!=0) return m_pthis==x.m_pthis;
|
|
else return true;
|
|
}
|
|
#else // Evil Method
|
|
inline bool IsEqual (const DelegateMemento &x) const{
|
|
return m_pthis==x.m_pthis && m_pFunction==x.m_pFunction;
|
|
}
|
|
#endif
|
|
// Provide a strict weak ordering for DelegateMementos.
|
|
inline bool IsLess(const DelegateMemento &right) const {
|
|
// deal with static function pointers first
|
|
#if !defined(FASTDELEGATE_USESTATICFUNCTIONHACK)
|
|
if (m_pStaticFunction !=0 || right.m_pStaticFunction!=0)
|
|
return m_pStaticFunction < right.m_pStaticFunction;
|
|
#endif
|
|
if (m_pthis !=right.m_pthis) return m_pthis < right.m_pthis;
|
|
// There are no ordering operators for member function pointers,
|
|
// but we can fake one by comparing each byte. The resulting ordering is
|
|
// arbitrary (and compiler-dependent), but it permits storage in ordered STL containers.
|
|
return memcmp(&m_pFunction, &right.m_pFunction, sizeof(m_pFunction)) < 0;
|
|
|
|
}
|
|
// BUGFIX (Mar 2005):
|
|
// We can't just compare m_pFunction because on Metrowerks,
|
|
// m_pFunction can be zero even if the delegate is not empty!
|
|
inline bool operator ! () const // Is it bound to anything?
|
|
{ return m_pthis==0 && m_pFunction==0; }
|
|
inline bool empty() const // Is it bound to anything?
|
|
{ return m_pthis==0 && m_pFunction==0; }
|
|
public:
|
|
DelegateMemento & operator = (const DelegateMemento &right) {
|
|
SetMementoFrom(right);
|
|
return *this;
|
|
}
|
|
inline bool operator <(const DelegateMemento &right) {
|
|
return IsLess(right);
|
|
}
|
|
inline bool operator >(const DelegateMemento &right) {
|
|
return right.IsLess(*this);
|
|
}
|
|
DelegateMemento (const DelegateMemento &right) :
|
|
m_pthis(right.m_pthis), m_pFunction(right.m_pFunction)
|
|
#if !defined(FASTDELEGATE_USESTATICFUNCTIONHACK)
|
|
, m_pStaticFunction (right.m_pStaticFunction)
|
|
#endif
|
|
{}
|
|
protected:
|
|
void SetMementoFrom(const DelegateMemento &right) {
|
|
m_pFunction = right.m_pFunction;
|
|
m_pthis = right.m_pthis;
|
|
#if !defined(FASTDELEGATE_USESTATICFUNCTIONHACK)
|
|
m_pStaticFunction = right.m_pStaticFunction;
|
|
#endif
|
|
}
|
|
};
|
|
|
|
|
|
// ClosurePtr<>
|
|
//
|
|
// A private wrapper class that adds function signatures to DelegateMemento.
|
|
// It's the class that does most of the actual work.
|
|
// The signatures are specified by:
|
|
// GenericMemFunc: must be a type of GenericClass member function pointer.
|
|
// StaticFuncPtr: must be a type of function pointer with the same signature
|
|
// as GenericMemFunc.
|
|
// UnvoidStaticFuncPtr: is the same as StaticFuncPtr, except on VC6
|
|
// where it never returns void (returns DefaultVoid instead).
|
|
|
|
// An outer class, FastDelegateN<>, handles the invoking and creates the
|
|
// necessary typedefs.
|
|
// This class does everything else.
|
|
|
|
namespace detail {
|
|
|
|
template < class GenericMemFunc, class StaticFuncPtr, class UnvoidStaticFuncPtr>
|
|
class ClosurePtr : public DelegateMemento {
|
|
public:
|
|
// These functions are for setting the delegate to a member function.
|
|
|
|
// Here's the clever bit: we convert an arbitrary member function into a
|
|
// standard form. XMemFunc should be a member function of class X, but I can't
|
|
// enforce that here. It needs to be enforced by the wrapper class.
|
|
template < class X, class XMemFunc >
|
|
inline void bindmemfunc(X *pthis, XMemFunc function_to_bind ) {
|
|
m_pthis = SimplifyMemFunc< sizeof(function_to_bind) >
|
|
::Convert(pthis, function_to_bind, m_pFunction);
|
|
#if !defined(FASTDELEGATE_USESTATICFUNCTIONHACK)
|
|
m_pStaticFunction = 0;
|
|
#endif
|
|
}
|
|
// For const member functions, we only need a const class pointer.
|
|
// Since we know that the member function is const, it's safe to
|
|
// remove the const qualifier from the 'this' pointer with a const_cast.
|
|
// VC6 has problems if we just overload 'bindmemfunc', so we give it a different name.
|
|
template < class X, class XMemFunc>
|
|
inline void bindconstmemfunc(const X *pthis, XMemFunc function_to_bind) {
|
|
m_pthis= SimplifyMemFunc< sizeof(function_to_bind) >
|
|
::Convert(const_cast<X*>(pthis), function_to_bind, m_pFunction);
|
|
#if !defined(FASTDELEGATE_USESTATICFUNCTIONHACK)
|
|
m_pStaticFunction = 0;
|
|
#endif
|
|
}
|
|
#ifdef FASTDELEGATE_GCC_BUG_8271 // At present, GCC doesn't recognize constness of MFPs in templates
|
|
template < class X, class XMemFunc>
|
|
inline void bindmemfunc(const X *pthis, XMemFunc function_to_bind) {
|
|
bindconstmemfunc(pthis, function_to_bind);
|
|
#if !defined(FASTDELEGATE_USESTATICFUNCTIONHACK)
|
|
m_pStaticFunction = 0;
|
|
#endif
|
|
}
|
|
#endif
|
|
// These functions are required for invoking the stored function
|
|
inline GenericClass *GetClosureThis() const { return m_pthis; }
|
|
inline GenericMemFunc GetClosureMemPtr() const { return reinterpret_cast<GenericMemFunc>(m_pFunction); }
|
|
|
|
// There are a few ways of dealing with static function pointers.
|
|
// There's a standard-compliant, but tricky method.
|
|
// There's also a straightforward hack, that won't work on DOS compilers using the
|
|
// medium memory model. It's so evil that I can't recommend it, but I've
|
|
// implemented it anyway because it produces very nice asm code.
|
|
|
|
#if !defined(FASTDELEGATE_USESTATICFUNCTIONHACK)
|
|
|
|
// ClosurePtr<> - Safe version
|
|
//
|
|
// This implementation is standard-compliant, but a bit tricky.
|
|
// I store the function pointer inside the class, and the delegate then
|
|
// points to itself. Whenever the delegate is copied, these self-references
|
|
// must be transformed, and this complicates the = and == operators.
|
|
public:
|
|
// The next two functions are for operator ==, =, and the copy constructor.
|
|
// We may need to convert the m_pthis pointers, so that
|
|
// they remain as self-references.
|
|
template< class DerivedClass >
|
|
inline void CopyFrom (DerivedClass *pParent, const DelegateMemento &x) {
|
|
SetMementoFrom(x);
|
|
if (m_pStaticFunction!=0) {
|
|
// transform self references...
|
|
m_pthis=reinterpret_cast<GenericClass *>(pParent);
|
|
}
|
|
}
|
|
// For static functions, the 'static_function_invoker' class in the parent
|
|
// will be called. The parent then needs to call GetStaticFunction() to find out
|
|
// the actual function to invoke.
|
|
template < class DerivedClass, class ParentInvokerSig >
|
|
inline void bindstaticfunc(DerivedClass *pParent, ParentInvokerSig static_function_invoker,
|
|
StaticFuncPtr function_to_bind ) {
|
|
if (function_to_bind==0) { // cope with assignment to 0
|
|
m_pFunction=0;
|
|
} else {
|
|
bindmemfunc(pParent, static_function_invoker);
|
|
}
|
|
m_pStaticFunction=reinterpret_cast<GenericFuncPtr>(function_to_bind);
|
|
}
|
|
inline UnvoidStaticFuncPtr GetStaticFunction() const {
|
|
return reinterpret_cast<UnvoidStaticFuncPtr>(m_pStaticFunction);
|
|
}
|
|
#else
|
|
|
|
// ClosurePtr<> - Evil version
|
|
//
|
|
// For compilers where data pointers are at least as big as code pointers, it is
|
|
// possible to store the function pointer in the this pointer, using another
|
|
// horrible_cast. Invocation isn't any faster, but it saves 4 bytes, and
|
|
// speeds up comparison and assignment. If C++ provided direct language support
|
|
// for delegates, they would produce asm code that was almost identical to this.
|
|
// Note that the Sun C++ and MSVC documentation explicitly state that they
|
|
// support static_cast between void * and function pointers.
|
|
|
|
template< class DerivedClass >
|
|
inline void CopyFrom (DerivedClass *pParent, const DelegateMemento &right) {
|
|
SetMementoFrom(right);
|
|
}
|
|
// For static functions, the 'static_function_invoker' class in the parent
|
|
// will be called. The parent then needs to call GetStaticFunction() to find out
|
|
// the actual function to invoke.
|
|
// ******** EVIL, EVIL CODE! *******
|
|
template < class DerivedClass, class ParentInvokerSig>
|
|
inline void bindstaticfunc(DerivedClass *pParent, ParentInvokerSig static_function_invoker,
|
|
StaticFuncPtr function_to_bind) {
|
|
if (function_to_bind==0) { // cope with assignment to 0
|
|
m_pFunction=0;
|
|
} else {
|
|
// We'll be ignoring the 'this' pointer, but we need to make sure we pass
|
|
// a valid value to bindmemfunc().
|
|
bindmemfunc(pParent, static_function_invoker);
|
|
}
|
|
|
|
// WARNING! Evil hack. We store the function in the 'this' pointer!
|
|
// Ensure that there's a compilation failure if function pointers
|
|
// and data pointers have different sizes.
|
|
// If you get this error, you need to #undef FASTDELEGATE_USESTATICFUNCTIONHACK.
|
|
typedef int ERROR_CantUseEvilMethod[sizeof(GenericClass *)==sizeof(function_to_bind) ? 1 : -1];
|
|
m_pthis = horrible_cast<GenericClass *>(function_to_bind);
|
|
// MSVC, SunC++ and DMC accept the following (non-standard) code:
|
|
// m_pthis = static_cast<GenericClass *>(static_cast<void *>(function_to_bind));
|
|
// BCC32, Comeau and DMC accept this method. MSVC7.1 needs __int64 instead of long
|
|
// m_pthis = reinterpret_cast<GenericClass *>(reinterpret_cast<long>(function_to_bind));
|
|
}
|
|
// ******** EVIL, EVIL CODE! *******
|
|
// This function will be called with an invalid 'this' pointer!!
|
|
// We're just returning the 'this' pointer, converted into
|
|
// a function pointer!
|
|
inline UnvoidStaticFuncPtr GetStaticFunction() const {
|
|
// Ensure that there's a compilation failure if function pointers
|
|
// and data pointers have different sizes.
|
|
// If you get this error, you need to #undef FASTDELEGATE_USESTATICFUNCTIONHACK.
|
|
typedef int ERROR_CantUseEvilMethod[sizeof(UnvoidStaticFuncPtr)==sizeof(this) ? 1 : -1];
|
|
return horrible_cast<UnvoidStaticFuncPtr>(this);
|
|
}
|
|
#endif // !defined(FASTDELEGATE_USESTATICFUNCTIONHACK)
|
|
|
|
// Does the closure contain this static function?
|
|
inline bool IsEqualToStaticFuncPtr(StaticFuncPtr funcptr){
|
|
if (funcptr==0) return empty();
|
|
// For the Evil method, if it doesn't actually contain a static function, this will return an arbitrary
|
|
// value that is not equal to any valid function pointer.
|
|
else return funcptr==reinterpret_cast<StaticFuncPtr>(GetStaticFunction());
|
|
}
|
|
};
|
|
|
|
|
|
} // namespace detail
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Fast Delegates, part 3:
|
|
//
|
|
// Wrapper classes to ensure type safety
|
|
//
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
// Once we have the member function conversion templates, it's easy to make the
|
|
// wrapper classes. So that they will work with as many compilers as possible,
|
|
// the classes are of the form
|
|
// FastDelegate3<int, char *, double>
|
|
// They can cope with any combination of parameters. The max number of parameters
|
|
// allowed is 8, but it is trivial to increase this limit.
|
|
// Note that we need to treat const member functions seperately.
|
|
// All this class does is to enforce type safety, and invoke the delegate with
|
|
// the correct list of parameters.
|
|
|
|
// Because of the weird rule about the class of derived member function pointers,
|
|
// you sometimes need to apply a downcast to the 'this' pointer.
|
|
// This is the reason for the use of "implicit_cast<X*>(pthis)" in the code below.
|
|
// If CDerivedClass is derived from CBaseClass, but doesn't override SimpleVirtualFunction,
|
|
// without this trick you'd need to write:
|
|
// MyDelegate(static_cast<CBaseClass *>(&d), &CDerivedClass::SimpleVirtualFunction);
|
|
// but with the trick you can write
|
|
// MyDelegate(&d, &CDerivedClass::SimpleVirtualFunction);
|
|
|
|
// RetType is the type the compiler uses in compiling the template. For VC6,
|
|
// it cannot be void. DesiredRetType is the real type which is returned from
|
|
// all of the functions. It can be void.
|
|
|
|
// Implicit conversion to "bool" is achieved using the safe_bool idiom,
|
|
// using member data pointers (MDP). This allows "if (dg)..." syntax
|
|
// Because some compilers (eg codeplay) don't have a unique value for a zero
|
|
// MDP, an extra padding member is added to the SafeBool struct.
|
|
// Some compilers (eg VC6) won't implicitly convert from 0 to an MDP, so
|
|
// in that case the static function constructor is not made explicit; this
|
|
// allows "if (dg==0) ..." to compile.
|
|
|
|
//N=0
|
|
template<class RetType=detail::DefaultVoid>
|
|
class FastDelegate0 {
|
|
private:
|
|
typedef typename detail::DefaultVoidToVoid<RetType>::type DesiredRetType;
|
|
typedef DesiredRetType (*StaticFunctionPtr)();
|
|
typedef RetType (*UnvoidStaticFunctionPtr)();
|
|
typedef RetType (detail::GenericClass::*GenericMemFn)();
|
|
typedef detail::ClosurePtr<GenericMemFn, StaticFunctionPtr, UnvoidStaticFunctionPtr> ClosureType;
|
|
ClosureType m_Closure;
|
|
public:
|
|
// Typedefs to aid generic programming
|
|
typedef FastDelegate0 type;
|
|
|
|
// Construction and comparison functions
|
|
FastDelegate0() { clear(); }
|
|
FastDelegate0(const FastDelegate0 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
void operator = (const FastDelegate0 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
bool operator ==(const FastDelegate0 &x) const {
|
|
return m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator !=(const FastDelegate0 &x) const {
|
|
return !m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator <(const FastDelegate0 &x) const {
|
|
return m_Closure.IsLess(x.m_Closure); }
|
|
bool operator >(const FastDelegate0 &x) const {
|
|
return x.m_Closure.IsLess(m_Closure); }
|
|
// Binding to non-const member functions
|
|
template < class X, class Y >
|
|
FastDelegate0(Y *pthis, DesiredRetType (X::* function_to_bind)() ) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(Y *pthis, DesiredRetType (X::* function_to_bind)()) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
// Binding to const member functions.
|
|
template < class X, class Y >
|
|
FastDelegate0(const Y *pthis, DesiredRetType (X::* function_to_bind)() const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(const Y *pthis, DesiredRetType (X::* function_to_bind)() const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X *>(pthis), function_to_bind); }
|
|
// Static functions. We convert them into a member function call.
|
|
// This constructor also provides implicit conversion
|
|
FastDelegate0(DesiredRetType (*function_to_bind)() ) {
|
|
bind(function_to_bind); }
|
|
// for efficiency, prevent creation of a temporary
|
|
void operator = (DesiredRetType (*function_to_bind)() ) {
|
|
bind(function_to_bind); }
|
|
inline void bind(DesiredRetType (*function_to_bind)()) {
|
|
m_Closure.bindstaticfunc(this, &FastDelegate0::InvokeStaticFunction,
|
|
function_to_bind); }
|
|
// Invoke the delegate
|
|
RetType operator() () const {
|
|
return (m_Closure.GetClosureThis()->*(m_Closure.GetClosureMemPtr()))(); }
|
|
// Implicit conversion to "bool" using the safe_bool idiom
|
|
private:
|
|
typedef struct SafeBoolStruct {
|
|
int a_data_pointer_to_this_is_0_on_buggy_compilers;
|
|
StaticFunctionPtr m_nonzero;
|
|
} UselessTypedef;
|
|
typedef StaticFunctionPtr SafeBoolStruct::*unspecified_bool_type;
|
|
public:
|
|
operator unspecified_bool_type() const {
|
|
return empty()? 0: &SafeBoolStruct::m_nonzero;
|
|
}
|
|
// necessary to allow ==0 to work despite the safe_bool idiom
|
|
inline bool operator==(StaticFunctionPtr funcptr) {
|
|
return m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator!=(StaticFunctionPtr funcptr) {
|
|
return !m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator ! () const { // Is it bound to anything?
|
|
return !m_Closure; }
|
|
inline bool empty() const {
|
|
return !m_Closure; }
|
|
void clear() { m_Closure.clear();}
|
|
// Conversion to and from the DelegateMemento storage class
|
|
const DelegateMemento & GetMemento() { return m_Closure; }
|
|
void SetMemento(const DelegateMemento &any) { m_Closure.CopyFrom(this, any); }
|
|
|
|
private: // Invoker for static functions
|
|
RetType InvokeStaticFunction() const {
|
|
return (*(m_Closure.GetStaticFunction()))(); }
|
|
};
|
|
|
|
//N=1
|
|
template<class Param1, class RetType=detail::DefaultVoid>
|
|
class FastDelegate1 {
|
|
private:
|
|
typedef typename detail::DefaultVoidToVoid<RetType>::type DesiredRetType;
|
|
typedef DesiredRetType (*StaticFunctionPtr)(Param1 p1);
|
|
typedef RetType (*UnvoidStaticFunctionPtr)(Param1 p1);
|
|
typedef RetType (detail::GenericClass::*GenericMemFn)(Param1 p1);
|
|
typedef detail::ClosurePtr<GenericMemFn, StaticFunctionPtr, UnvoidStaticFunctionPtr> ClosureType;
|
|
ClosureType m_Closure;
|
|
public:
|
|
// Typedefs to aid generic programming
|
|
typedef FastDelegate1 type;
|
|
|
|
// Construction and comparison functions
|
|
FastDelegate1() { clear(); }
|
|
FastDelegate1(const FastDelegate1 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
void operator = (const FastDelegate1 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
bool operator ==(const FastDelegate1 &x) const {
|
|
return m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator !=(const FastDelegate1 &x) const {
|
|
return !m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator <(const FastDelegate1 &x) const {
|
|
return m_Closure.IsLess(x.m_Closure); }
|
|
bool operator >(const FastDelegate1 &x) const {
|
|
return x.m_Closure.IsLess(m_Closure); }
|
|
// Binding to non-const member functions
|
|
template < class X, class Y >
|
|
FastDelegate1(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1) ) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1)) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
// Binding to const member functions.
|
|
template < class X, class Y >
|
|
FastDelegate1(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X *>(pthis), function_to_bind); }
|
|
// Static functions. We convert them into a member function call.
|
|
// This constructor also provides implicit conversion
|
|
FastDelegate1(DesiredRetType (*function_to_bind)(Param1 p1) ) {
|
|
bind(function_to_bind); }
|
|
// for efficiency, prevent creation of a temporary
|
|
void operator = (DesiredRetType (*function_to_bind)(Param1 p1) ) {
|
|
bind(function_to_bind); }
|
|
inline void bind(DesiredRetType (*function_to_bind)(Param1 p1)) {
|
|
m_Closure.bindstaticfunc(this, &FastDelegate1::InvokeStaticFunction,
|
|
function_to_bind); }
|
|
// Invoke the delegate
|
|
RetType operator() (Param1 p1) const {
|
|
return (m_Closure.GetClosureThis()->*(m_Closure.GetClosureMemPtr()))(p1); }
|
|
// Implicit conversion to "bool" using the safe_bool idiom
|
|
private:
|
|
typedef struct SafeBoolStruct {
|
|
int a_data_pointer_to_this_is_0_on_buggy_compilers;
|
|
StaticFunctionPtr m_nonzero;
|
|
} UselessTypedef;
|
|
typedef StaticFunctionPtr SafeBoolStruct::*unspecified_bool_type;
|
|
public:
|
|
operator unspecified_bool_type() const {
|
|
return empty()? 0: &SafeBoolStruct::m_nonzero;
|
|
}
|
|
// necessary to allow ==0 to work despite the safe_bool idiom
|
|
inline bool operator==(StaticFunctionPtr funcptr) {
|
|
return m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator!=(StaticFunctionPtr funcptr) {
|
|
return !m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator ! () const { // Is it bound to anything?
|
|
return !m_Closure; }
|
|
inline bool empty() const {
|
|
return !m_Closure; }
|
|
void clear() { m_Closure.clear();}
|
|
// Conversion to and from the DelegateMemento storage class
|
|
const DelegateMemento & GetMemento() { return m_Closure; }
|
|
void SetMemento(const DelegateMemento &any) { m_Closure.CopyFrom(this, any); }
|
|
|
|
private: // Invoker for static functions
|
|
RetType InvokeStaticFunction(Param1 p1) const {
|
|
return (*(m_Closure.GetStaticFunction()))(p1); }
|
|
};
|
|
|
|
//N=2
|
|
template<class Param1, class Param2, class RetType=detail::DefaultVoid>
|
|
class FastDelegate2 {
|
|
private:
|
|
typedef typename detail::DefaultVoidToVoid<RetType>::type DesiredRetType;
|
|
typedef DesiredRetType (*StaticFunctionPtr)(Param1 p1, Param2 p2);
|
|
typedef RetType (*UnvoidStaticFunctionPtr)(Param1 p1, Param2 p2);
|
|
typedef RetType (detail::GenericClass::*GenericMemFn)(Param1 p1, Param2 p2);
|
|
typedef detail::ClosurePtr<GenericMemFn, StaticFunctionPtr, UnvoidStaticFunctionPtr> ClosureType;
|
|
ClosureType m_Closure;
|
|
public:
|
|
// Typedefs to aid generic programming
|
|
typedef FastDelegate2 type;
|
|
|
|
// Construction and comparison functions
|
|
FastDelegate2() { clear(); }
|
|
FastDelegate2(const FastDelegate2 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
void operator = (const FastDelegate2 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
bool operator ==(const FastDelegate2 &x) const {
|
|
return m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator !=(const FastDelegate2 &x) const {
|
|
return !m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator <(const FastDelegate2 &x) const {
|
|
return m_Closure.IsLess(x.m_Closure); }
|
|
bool operator >(const FastDelegate2 &x) const {
|
|
return x.m_Closure.IsLess(m_Closure); }
|
|
// Binding to non-const member functions
|
|
template < class X, class Y >
|
|
FastDelegate2(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2) ) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2)) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
// Binding to const member functions.
|
|
template < class X, class Y >
|
|
FastDelegate2(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X *>(pthis), function_to_bind); }
|
|
// Static functions. We convert them into a member function call.
|
|
// This constructor also provides implicit conversion
|
|
FastDelegate2(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2) ) {
|
|
bind(function_to_bind); }
|
|
// for efficiency, prevent creation of a temporary
|
|
void operator = (DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2) ) {
|
|
bind(function_to_bind); }
|
|
inline void bind(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2)) {
|
|
m_Closure.bindstaticfunc(this, &FastDelegate2::InvokeStaticFunction,
|
|
function_to_bind); }
|
|
// Invoke the delegate
|
|
RetType operator() (Param1 p1, Param2 p2) const {
|
|
return (m_Closure.GetClosureThis()->*(m_Closure.GetClosureMemPtr()))(p1, p2); }
|
|
// Implicit conversion to "bool" using the safe_bool idiom
|
|
private:
|
|
typedef struct SafeBoolStruct {
|
|
int a_data_pointer_to_this_is_0_on_buggy_compilers;
|
|
StaticFunctionPtr m_nonzero;
|
|
} UselessTypedef;
|
|
typedef StaticFunctionPtr SafeBoolStruct::*unspecified_bool_type;
|
|
public:
|
|
operator unspecified_bool_type() const {
|
|
return empty()? 0: &SafeBoolStruct::m_nonzero;
|
|
}
|
|
// necessary to allow ==0 to work despite the safe_bool idiom
|
|
inline bool operator==(StaticFunctionPtr funcptr) {
|
|
return m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator!=(StaticFunctionPtr funcptr) {
|
|
return !m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator ! () const { // Is it bound to anything?
|
|
return !m_Closure; }
|
|
inline bool empty() const {
|
|
return !m_Closure; }
|
|
void clear() { m_Closure.clear();}
|
|
// Conversion to and from the DelegateMemento storage class
|
|
const DelegateMemento & GetMemento() { return m_Closure; }
|
|
void SetMemento(const DelegateMemento &any) { m_Closure.CopyFrom(this, any); }
|
|
|
|
private: // Invoker for static functions
|
|
RetType InvokeStaticFunction(Param1 p1, Param2 p2) const {
|
|
return (*(m_Closure.GetStaticFunction()))(p1, p2); }
|
|
};
|
|
|
|
//N=3
|
|
template<class Param1, class Param2, class Param3, class RetType=detail::DefaultVoid>
|
|
class FastDelegate3 {
|
|
private:
|
|
typedef typename detail::DefaultVoidToVoid<RetType>::type DesiredRetType;
|
|
typedef DesiredRetType (*StaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3);
|
|
typedef RetType (*UnvoidStaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3);
|
|
typedef RetType (detail::GenericClass::*GenericMemFn)(Param1 p1, Param2 p2, Param3 p3);
|
|
typedef detail::ClosurePtr<GenericMemFn, StaticFunctionPtr, UnvoidStaticFunctionPtr> ClosureType;
|
|
ClosureType m_Closure;
|
|
public:
|
|
// Typedefs to aid generic programming
|
|
typedef FastDelegate3 type;
|
|
|
|
// Construction and comparison functions
|
|
FastDelegate3() { clear(); }
|
|
FastDelegate3(const FastDelegate3 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
void operator = (const FastDelegate3 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
bool operator ==(const FastDelegate3 &x) const {
|
|
return m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator !=(const FastDelegate3 &x) const {
|
|
return !m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator <(const FastDelegate3 &x) const {
|
|
return m_Closure.IsLess(x.m_Closure); }
|
|
bool operator >(const FastDelegate3 &x) const {
|
|
return x.m_Closure.IsLess(m_Closure); }
|
|
// Binding to non-const member functions
|
|
template < class X, class Y >
|
|
FastDelegate3(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3) ) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3)) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
// Binding to const member functions.
|
|
template < class X, class Y >
|
|
FastDelegate3(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X *>(pthis), function_to_bind); }
|
|
// Static functions. We convert them into a member function call.
|
|
// This constructor also provides implicit conversion
|
|
FastDelegate3(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3) ) {
|
|
bind(function_to_bind); }
|
|
// for efficiency, prevent creation of a temporary
|
|
void operator = (DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3) ) {
|
|
bind(function_to_bind); }
|
|
inline void bind(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3)) {
|
|
m_Closure.bindstaticfunc(this, &FastDelegate3::InvokeStaticFunction,
|
|
function_to_bind); }
|
|
// Invoke the delegate
|
|
RetType operator() (Param1 p1, Param2 p2, Param3 p3) const {
|
|
return (m_Closure.GetClosureThis()->*(m_Closure.GetClosureMemPtr()))(p1, p2, p3); }
|
|
// Implicit conversion to "bool" using the safe_bool idiom
|
|
private:
|
|
typedef struct SafeBoolStruct {
|
|
int a_data_pointer_to_this_is_0_on_buggy_compilers;
|
|
StaticFunctionPtr m_nonzero;
|
|
} UselessTypedef;
|
|
typedef StaticFunctionPtr SafeBoolStruct::*unspecified_bool_type;
|
|
public:
|
|
operator unspecified_bool_type() const {
|
|
return empty()? 0: &SafeBoolStruct::m_nonzero;
|
|
}
|
|
// necessary to allow ==0 to work despite the safe_bool idiom
|
|
inline bool operator==(StaticFunctionPtr funcptr) {
|
|
return m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator!=(StaticFunctionPtr funcptr) {
|
|
return !m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator ! () const { // Is it bound to anything?
|
|
return !m_Closure; }
|
|
inline bool empty() const {
|
|
return !m_Closure; }
|
|
void clear() { m_Closure.clear();}
|
|
// Conversion to and from the DelegateMemento storage class
|
|
const DelegateMemento & GetMemento() { return m_Closure; }
|
|
void SetMemento(const DelegateMemento &any) { m_Closure.CopyFrom(this, any); }
|
|
|
|
private: // Invoker for static functions
|
|
RetType InvokeStaticFunction(Param1 p1, Param2 p2, Param3 p3) const {
|
|
return (*(m_Closure.GetStaticFunction()))(p1, p2, p3); }
|
|
};
|
|
|
|
//N=4
|
|
template<class Param1, class Param2, class Param3, class Param4, class RetType=detail::DefaultVoid>
|
|
class FastDelegate4 {
|
|
private:
|
|
typedef typename detail::DefaultVoidToVoid<RetType>::type DesiredRetType;
|
|
typedef DesiredRetType (*StaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3, Param4 p4);
|
|
typedef RetType (*UnvoidStaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3, Param4 p4);
|
|
typedef RetType (detail::GenericClass::*GenericMemFn)(Param1 p1, Param2 p2, Param3 p3, Param4 p4);
|
|
typedef detail::ClosurePtr<GenericMemFn, StaticFunctionPtr, UnvoidStaticFunctionPtr> ClosureType;
|
|
ClosureType m_Closure;
|
|
public:
|
|
// Typedefs to aid generic programming
|
|
typedef FastDelegate4 type;
|
|
|
|
// Construction and comparison functions
|
|
FastDelegate4() { clear(); }
|
|
FastDelegate4(const FastDelegate4 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
void operator = (const FastDelegate4 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
bool operator ==(const FastDelegate4 &x) const {
|
|
return m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator !=(const FastDelegate4 &x) const {
|
|
return !m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator <(const FastDelegate4 &x) const {
|
|
return m_Closure.IsLess(x.m_Closure); }
|
|
bool operator >(const FastDelegate4 &x) const {
|
|
return x.m_Closure.IsLess(m_Closure); }
|
|
// Binding to non-const member functions
|
|
template < class X, class Y >
|
|
FastDelegate4(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4) ) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4)) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
// Binding to const member functions.
|
|
template < class X, class Y >
|
|
FastDelegate4(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X *>(pthis), function_to_bind); }
|
|
// Static functions. We convert them into a member function call.
|
|
// This constructor also provides implicit conversion
|
|
FastDelegate4(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4) ) {
|
|
bind(function_to_bind); }
|
|
// for efficiency, prevent creation of a temporary
|
|
void operator = (DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4) ) {
|
|
bind(function_to_bind); }
|
|
inline void bind(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4)) {
|
|
m_Closure.bindstaticfunc(this, &FastDelegate4::InvokeStaticFunction,
|
|
function_to_bind); }
|
|
// Invoke the delegate
|
|
RetType operator() (Param1 p1, Param2 p2, Param3 p3, Param4 p4) const {
|
|
return (m_Closure.GetClosureThis()->*(m_Closure.GetClosureMemPtr()))(p1, p2, p3, p4); }
|
|
// Implicit conversion to "bool" using the safe_bool idiom
|
|
private:
|
|
typedef struct SafeBoolStruct {
|
|
int a_data_pointer_to_this_is_0_on_buggy_compilers;
|
|
StaticFunctionPtr m_nonzero;
|
|
} UselessTypedef;
|
|
typedef StaticFunctionPtr SafeBoolStruct::*unspecified_bool_type;
|
|
public:
|
|
operator unspecified_bool_type() const {
|
|
return empty()? 0: &SafeBoolStruct::m_nonzero;
|
|
}
|
|
// necessary to allow ==0 to work despite the safe_bool idiom
|
|
inline bool operator==(StaticFunctionPtr funcptr) {
|
|
return m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator!=(StaticFunctionPtr funcptr) {
|
|
return !m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator ! () const { // Is it bound to anything?
|
|
return !m_Closure; }
|
|
inline bool empty() const {
|
|
return !m_Closure; }
|
|
void clear() { m_Closure.clear();}
|
|
// Conversion to and from the DelegateMemento storage class
|
|
const DelegateMemento & GetMemento() { return m_Closure; }
|
|
void SetMemento(const DelegateMemento &any) { m_Closure.CopyFrom(this, any); }
|
|
|
|
private: // Invoker for static functions
|
|
RetType InvokeStaticFunction(Param1 p1, Param2 p2, Param3 p3, Param4 p4) const {
|
|
return (*(m_Closure.GetStaticFunction()))(p1, p2, p3, p4); }
|
|
};
|
|
|
|
//N=5
|
|
template<class Param1, class Param2, class Param3, class Param4, class Param5, class RetType=detail::DefaultVoid>
|
|
class FastDelegate5 {
|
|
private:
|
|
typedef typename detail::DefaultVoidToVoid<RetType>::type DesiredRetType;
|
|
typedef DesiredRetType (*StaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5);
|
|
typedef RetType (*UnvoidStaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5);
|
|
typedef RetType (detail::GenericClass::*GenericMemFn)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5);
|
|
typedef detail::ClosurePtr<GenericMemFn, StaticFunctionPtr, UnvoidStaticFunctionPtr> ClosureType;
|
|
ClosureType m_Closure;
|
|
public:
|
|
// Typedefs to aid generic programming
|
|
typedef FastDelegate5 type;
|
|
|
|
// Construction and comparison functions
|
|
FastDelegate5() { clear(); }
|
|
FastDelegate5(const FastDelegate5 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
void operator = (const FastDelegate5 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
bool operator ==(const FastDelegate5 &x) const {
|
|
return m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator !=(const FastDelegate5 &x) const {
|
|
return !m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator <(const FastDelegate5 &x) const {
|
|
return m_Closure.IsLess(x.m_Closure); }
|
|
bool operator >(const FastDelegate5 &x) const {
|
|
return x.m_Closure.IsLess(m_Closure); }
|
|
// Binding to non-const member functions
|
|
template < class X, class Y >
|
|
FastDelegate5(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5) ) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5)) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
// Binding to const member functions.
|
|
template < class X, class Y >
|
|
FastDelegate5(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X *>(pthis), function_to_bind); }
|
|
// Static functions. We convert them into a member function call.
|
|
// This constructor also provides implicit conversion
|
|
FastDelegate5(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5) ) {
|
|
bind(function_to_bind); }
|
|
// for efficiency, prevent creation of a temporary
|
|
void operator = (DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5) ) {
|
|
bind(function_to_bind); }
|
|
inline void bind(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5)) {
|
|
m_Closure.bindstaticfunc(this, &FastDelegate5::InvokeStaticFunction,
|
|
function_to_bind); }
|
|
// Invoke the delegate
|
|
RetType operator() (Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5) const {
|
|
return (m_Closure.GetClosureThis()->*(m_Closure.GetClosureMemPtr()))(p1, p2, p3, p4, p5); }
|
|
// Implicit conversion to "bool" using the safe_bool idiom
|
|
private:
|
|
typedef struct SafeBoolStruct {
|
|
int a_data_pointer_to_this_is_0_on_buggy_compilers;
|
|
StaticFunctionPtr m_nonzero;
|
|
} UselessTypedef;
|
|
typedef StaticFunctionPtr SafeBoolStruct::*unspecified_bool_type;
|
|
public:
|
|
operator unspecified_bool_type() const {
|
|
return empty()? 0: &SafeBoolStruct::m_nonzero;
|
|
}
|
|
// necessary to allow ==0 to work despite the safe_bool idiom
|
|
inline bool operator==(StaticFunctionPtr funcptr) {
|
|
return m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator!=(StaticFunctionPtr funcptr) {
|
|
return !m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator ! () const { // Is it bound to anything?
|
|
return !m_Closure; }
|
|
inline bool empty() const {
|
|
return !m_Closure; }
|
|
void clear() { m_Closure.clear();}
|
|
// Conversion to and from the DelegateMemento storage class
|
|
const DelegateMemento & GetMemento() { return m_Closure; }
|
|
void SetMemento(const DelegateMemento &any) { m_Closure.CopyFrom(this, any); }
|
|
|
|
private: // Invoker for static functions
|
|
RetType InvokeStaticFunction(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5) const {
|
|
return (*(m_Closure.GetStaticFunction()))(p1, p2, p3, p4, p5); }
|
|
};
|
|
|
|
//N=6
|
|
template<class Param1, class Param2, class Param3, class Param4, class Param5, class Param6, class RetType=detail::DefaultVoid>
|
|
class FastDelegate6 {
|
|
private:
|
|
typedef typename detail::DefaultVoidToVoid<RetType>::type DesiredRetType;
|
|
typedef DesiredRetType (*StaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6);
|
|
typedef RetType (*UnvoidStaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6);
|
|
typedef RetType (detail::GenericClass::*GenericMemFn)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6);
|
|
typedef detail::ClosurePtr<GenericMemFn, StaticFunctionPtr, UnvoidStaticFunctionPtr> ClosureType;
|
|
ClosureType m_Closure;
|
|
public:
|
|
// Typedefs to aid generic programming
|
|
typedef FastDelegate6 type;
|
|
|
|
// Construction and comparison functions
|
|
FastDelegate6() { clear(); }
|
|
FastDelegate6(const FastDelegate6 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
void operator = (const FastDelegate6 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
bool operator ==(const FastDelegate6 &x) const {
|
|
return m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator !=(const FastDelegate6 &x) const {
|
|
return !m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator <(const FastDelegate6 &x) const {
|
|
return m_Closure.IsLess(x.m_Closure); }
|
|
bool operator >(const FastDelegate6 &x) const {
|
|
return x.m_Closure.IsLess(m_Closure); }
|
|
// Binding to non-const member functions
|
|
template < class X, class Y >
|
|
FastDelegate6(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6) ) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6)) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
// Binding to const member functions.
|
|
template < class X, class Y >
|
|
FastDelegate6(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X *>(pthis), function_to_bind); }
|
|
// Static functions. We convert them into a member function call.
|
|
// This constructor also provides implicit conversion
|
|
FastDelegate6(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6) ) {
|
|
bind(function_to_bind); }
|
|
// for efficiency, prevent creation of a temporary
|
|
void operator = (DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6) ) {
|
|
bind(function_to_bind); }
|
|
inline void bind(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6)) {
|
|
m_Closure.bindstaticfunc(this, &FastDelegate6::InvokeStaticFunction,
|
|
function_to_bind); }
|
|
// Invoke the delegate
|
|
RetType operator() (Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6) const {
|
|
return (m_Closure.GetClosureThis()->*(m_Closure.GetClosureMemPtr()))(p1, p2, p3, p4, p5, p6); }
|
|
// Implicit conversion to "bool" using the safe_bool idiom
|
|
private:
|
|
typedef struct SafeBoolStruct {
|
|
int a_data_pointer_to_this_is_0_on_buggy_compilers;
|
|
StaticFunctionPtr m_nonzero;
|
|
} UselessTypedef;
|
|
typedef StaticFunctionPtr SafeBoolStruct::*unspecified_bool_type;
|
|
public:
|
|
operator unspecified_bool_type() const {
|
|
return empty()? 0: &SafeBoolStruct::m_nonzero;
|
|
}
|
|
// necessary to allow ==0 to work despite the safe_bool idiom
|
|
inline bool operator==(StaticFunctionPtr funcptr) {
|
|
return m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator!=(StaticFunctionPtr funcptr) {
|
|
return !m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator ! () const { // Is it bound to anything?
|
|
return !m_Closure; }
|
|
inline bool empty() const {
|
|
return !m_Closure; }
|
|
void clear() { m_Closure.clear();}
|
|
// Conversion to and from the DelegateMemento storage class
|
|
const DelegateMemento & GetMemento() { return m_Closure; }
|
|
void SetMemento(const DelegateMemento &any) { m_Closure.CopyFrom(this, any); }
|
|
|
|
private: // Invoker for static functions
|
|
RetType InvokeStaticFunction(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6) const {
|
|
return (*(m_Closure.GetStaticFunction()))(p1, p2, p3, p4, p5, p6); }
|
|
};
|
|
|
|
//N=7
|
|
template<class Param1, class Param2, class Param3, class Param4, class Param5, class Param6, class Param7, class RetType=detail::DefaultVoid>
|
|
class FastDelegate7 {
|
|
private:
|
|
typedef typename detail::DefaultVoidToVoid<RetType>::type DesiredRetType;
|
|
typedef DesiredRetType (*StaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7);
|
|
typedef RetType (*UnvoidStaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7);
|
|
typedef RetType (detail::GenericClass::*GenericMemFn)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7);
|
|
typedef detail::ClosurePtr<GenericMemFn, StaticFunctionPtr, UnvoidStaticFunctionPtr> ClosureType;
|
|
ClosureType m_Closure;
|
|
public:
|
|
// Typedefs to aid generic programming
|
|
typedef FastDelegate7 type;
|
|
|
|
// Construction and comparison functions
|
|
FastDelegate7() { clear(); }
|
|
FastDelegate7(const FastDelegate7 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
void operator = (const FastDelegate7 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
bool operator ==(const FastDelegate7 &x) const {
|
|
return m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator !=(const FastDelegate7 &x) const {
|
|
return !m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator <(const FastDelegate7 &x) const {
|
|
return m_Closure.IsLess(x.m_Closure); }
|
|
bool operator >(const FastDelegate7 &x) const {
|
|
return x.m_Closure.IsLess(m_Closure); }
|
|
// Binding to non-const member functions
|
|
template < class X, class Y >
|
|
FastDelegate7(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7) ) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7)) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
// Binding to const member functions.
|
|
template < class X, class Y >
|
|
FastDelegate7(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X *>(pthis), function_to_bind); }
|
|
// Static functions. We convert them into a member function call.
|
|
// This constructor also provides implicit conversion
|
|
FastDelegate7(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7) ) {
|
|
bind(function_to_bind); }
|
|
// for efficiency, prevent creation of a temporary
|
|
void operator = (DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7) ) {
|
|
bind(function_to_bind); }
|
|
inline void bind(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7)) {
|
|
m_Closure.bindstaticfunc(this, &FastDelegate7::InvokeStaticFunction,
|
|
function_to_bind); }
|
|
// Invoke the delegate
|
|
RetType operator() (Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7) const {
|
|
return (m_Closure.GetClosureThis()->*(m_Closure.GetClosureMemPtr()))(p1, p2, p3, p4, p5, p6, p7); }
|
|
// Implicit conversion to "bool" using the safe_bool idiom
|
|
private:
|
|
typedef struct SafeBoolStruct {
|
|
int a_data_pointer_to_this_is_0_on_buggy_compilers;
|
|
StaticFunctionPtr m_nonzero;
|
|
} UselessTypedef;
|
|
typedef StaticFunctionPtr SafeBoolStruct::*unspecified_bool_type;
|
|
public:
|
|
operator unspecified_bool_type() const {
|
|
return empty()? 0: &SafeBoolStruct::m_nonzero;
|
|
}
|
|
// necessary to allow ==0 to work despite the safe_bool idiom
|
|
inline bool operator==(StaticFunctionPtr funcptr) {
|
|
return m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator!=(StaticFunctionPtr funcptr) {
|
|
return !m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator ! () const { // Is it bound to anything?
|
|
return !m_Closure; }
|
|
inline bool empty() const {
|
|
return !m_Closure; }
|
|
void clear() { m_Closure.clear();}
|
|
// Conversion to and from the DelegateMemento storage class
|
|
const DelegateMemento & GetMemento() { return m_Closure; }
|
|
void SetMemento(const DelegateMemento &any) { m_Closure.CopyFrom(this, any); }
|
|
|
|
private: // Invoker for static functions
|
|
RetType InvokeStaticFunction(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7) const {
|
|
return (*(m_Closure.GetStaticFunction()))(p1, p2, p3, p4, p5, p6, p7); }
|
|
};
|
|
|
|
//N=8
|
|
template<class Param1, class Param2, class Param3, class Param4, class Param5, class Param6, class Param7, class Param8, class RetType=detail::DefaultVoid>
|
|
class FastDelegate8 {
|
|
private:
|
|
typedef typename detail::DefaultVoidToVoid<RetType>::type DesiredRetType;
|
|
typedef DesiredRetType (*StaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8);
|
|
typedef RetType (*UnvoidStaticFunctionPtr)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8);
|
|
typedef RetType (detail::GenericClass::*GenericMemFn)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8);
|
|
typedef detail::ClosurePtr<GenericMemFn, StaticFunctionPtr, UnvoidStaticFunctionPtr> ClosureType;
|
|
ClosureType m_Closure;
|
|
public:
|
|
// Typedefs to aid generic programming
|
|
typedef FastDelegate8 type;
|
|
|
|
// Construction and comparison functions
|
|
FastDelegate8() { clear(); }
|
|
FastDelegate8(const FastDelegate8 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
void operator = (const FastDelegate8 &x) {
|
|
m_Closure.CopyFrom(this, x.m_Closure); }
|
|
bool operator ==(const FastDelegate8 &x) const {
|
|
return m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator !=(const FastDelegate8 &x) const {
|
|
return !m_Closure.IsEqual(x.m_Closure); }
|
|
bool operator <(const FastDelegate8 &x) const {
|
|
return m_Closure.IsLess(x.m_Closure); }
|
|
bool operator >(const FastDelegate8 &x) const {
|
|
return x.m_Closure.IsLess(m_Closure); }
|
|
// Binding to non-const member functions
|
|
template < class X, class Y >
|
|
FastDelegate8(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8) ) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8)) {
|
|
m_Closure.bindmemfunc(detail::implicit_cast<X*>(pthis), function_to_bind); }
|
|
// Binding to const member functions.
|
|
template < class X, class Y >
|
|
FastDelegate8(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X*>(pthis), function_to_bind); }
|
|
template < class X, class Y >
|
|
inline void bind(const Y *pthis, DesiredRetType (X::* function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8) const) {
|
|
m_Closure.bindconstmemfunc(detail::implicit_cast<const X *>(pthis), function_to_bind); }
|
|
// Static functions. We convert them into a member function call.
|
|
// This constructor also provides implicit conversion
|
|
FastDelegate8(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8) ) {
|
|
bind(function_to_bind); }
|
|
// for efficiency, prevent creation of a temporary
|
|
void operator = (DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8) ) {
|
|
bind(function_to_bind); }
|
|
inline void bind(DesiredRetType (*function_to_bind)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8)) {
|
|
m_Closure.bindstaticfunc(this, &FastDelegate8::InvokeStaticFunction,
|
|
function_to_bind); }
|
|
// Invoke the delegate
|
|
RetType operator() (Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8) const {
|
|
return (m_Closure.GetClosureThis()->*(m_Closure.GetClosureMemPtr()))(p1, p2, p3, p4, p5, p6, p7, p8); }
|
|
// Implicit conversion to "bool" using the safe_bool idiom
|
|
private:
|
|
typedef struct SafeBoolStruct {
|
|
int a_data_pointer_to_this_is_0_on_buggy_compilers;
|
|
StaticFunctionPtr m_nonzero;
|
|
} UselessTypedef;
|
|
typedef StaticFunctionPtr SafeBoolStruct::*unspecified_bool_type;
|
|
public:
|
|
operator unspecified_bool_type() const {
|
|
return empty()? 0: &SafeBoolStruct::m_nonzero;
|
|
}
|
|
// necessary to allow ==0 to work despite the safe_bool idiom
|
|
inline bool operator==(StaticFunctionPtr funcptr) {
|
|
return m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator!=(StaticFunctionPtr funcptr) {
|
|
return !m_Closure.IsEqualToStaticFuncPtr(funcptr); }
|
|
inline bool operator ! () const { // Is it bound to anything?
|
|
return !m_Closure; }
|
|
inline bool empty() const {
|
|
return !m_Closure; }
|
|
void clear() { m_Closure.clear();}
|
|
// Conversion to and from the DelegateMemento storage class
|
|
const DelegateMemento & GetMemento() { return m_Closure; }
|
|
void SetMemento(const DelegateMemento &any) { m_Closure.CopyFrom(this, any); }
|
|
|
|
private: // Invoker for static functions
|
|
RetType InvokeStaticFunction(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8) const {
|
|
return (*(m_Closure.GetStaticFunction()))(p1, p2, p3, p4, p5, p6, p7, p8); }
|
|
};
|
|
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Fast Delegates, part 4:
|
|
//
|
|
// FastDelegate<> class (Original author: Jody Hagins)
|
|
// Allows boost::function style syntax like:
|
|
// FastDelegate< double (int, long) >
|
|
// instead of:
|
|
// FastDelegate2< int, long, double >
|
|
//
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifdef FASTDELEGATE_ALLOW_FUNCTION_TYPE_SYNTAX
|
|
|
|
// Declare FastDelegate as a class template. It will be specialized
|
|
// later for all number of arguments.
|
|
template <typename Signature>
|
|
class FastDelegate;
|
|
|
|
//N=0
|
|
// Specialization to allow use of
|
|
// FastDelegate< R ( ) >
|
|
// instead of
|
|
// FastDelegate0 < R >
|
|
template<typename R>
|
|
class FastDelegate< R ( ) >
|
|
// Inherit from FastDelegate0 so that it can be treated just like a FastDelegate0
|
|
: public FastDelegate0 < R >
|
|
{
|
|
public:
|
|
// Make using the base type a bit easier via typedef.
|
|
typedef FastDelegate0 < R > BaseType;
|
|
|
|
// Allow users access to the specific type of this delegate.
|
|
typedef FastDelegate SelfType;
|
|
|
|
// Mimic the base class constructors.
|
|
FastDelegate() : BaseType() { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(Y * pthis,
|
|
R (X::* function_to_bind)( ))
|
|
: BaseType(pthis, function_to_bind) { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(const Y *pthis,
|
|
R (X::* function_to_bind)( ) const)
|
|
: BaseType(pthis, function_to_bind)
|
|
{ }
|
|
|
|
FastDelegate(R (*function_to_bind)( ))
|
|
: BaseType(function_to_bind) { }
|
|
void operator = (const BaseType &x) {
|
|
*static_cast<BaseType*>(this) = x; }
|
|
};
|
|
|
|
//N=1
|
|
// Specialization to allow use of
|
|
// FastDelegate< R ( Param1 ) >
|
|
// instead of
|
|
// FastDelegate1 < Param1, R >
|
|
template<typename R, class Param1>
|
|
class FastDelegate< R ( Param1 ) >
|
|
// Inherit from FastDelegate1 so that it can be treated just like a FastDelegate1
|
|
: public FastDelegate1 < Param1, R >
|
|
{
|
|
public:
|
|
// Make using the base type a bit easier via typedef.
|
|
typedef FastDelegate1 < Param1, R > BaseType;
|
|
|
|
// Allow users access to the specific type of this delegate.
|
|
typedef FastDelegate SelfType;
|
|
|
|
// Mimic the base class constructors.
|
|
FastDelegate() : BaseType() { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(Y * pthis,
|
|
R (X::* function_to_bind)( Param1 p1 ))
|
|
: BaseType(pthis, function_to_bind) { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(const Y *pthis,
|
|
R (X::* function_to_bind)( Param1 p1 ) const)
|
|
: BaseType(pthis, function_to_bind)
|
|
{ }
|
|
|
|
FastDelegate(R (*function_to_bind)( Param1 p1 ))
|
|
: BaseType(function_to_bind) { }
|
|
void operator = (const BaseType &x) {
|
|
*static_cast<BaseType*>(this) = x; }
|
|
};
|
|
|
|
//N=2
|
|
// Specialization to allow use of
|
|
// FastDelegate< R ( Param1, Param2 ) >
|
|
// instead of
|
|
// FastDelegate2 < Param1, Param2, R >
|
|
template<typename R, class Param1, class Param2>
|
|
class FastDelegate< R ( Param1, Param2 ) >
|
|
// Inherit from FastDelegate2 so that it can be treated just like a FastDelegate2
|
|
: public FastDelegate2 < Param1, Param2, R >
|
|
{
|
|
public:
|
|
// Make using the base type a bit easier via typedef.
|
|
typedef FastDelegate2 < Param1, Param2, R > BaseType;
|
|
|
|
// Allow users access to the specific type of this delegate.
|
|
typedef FastDelegate SelfType;
|
|
|
|
// Mimic the base class constructors.
|
|
FastDelegate() : BaseType() { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(Y * pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2 ))
|
|
: BaseType(pthis, function_to_bind) { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(const Y *pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2 ) const)
|
|
: BaseType(pthis, function_to_bind)
|
|
{ }
|
|
|
|
FastDelegate(R (*function_to_bind)( Param1 p1, Param2 p2 ))
|
|
: BaseType(function_to_bind) { }
|
|
void operator = (const BaseType &x) {
|
|
*static_cast<BaseType*>(this) = x; }
|
|
};
|
|
|
|
//N=3
|
|
// Specialization to allow use of
|
|
// FastDelegate< R ( Param1, Param2, Param3 ) >
|
|
// instead of
|
|
// FastDelegate3 < Param1, Param2, Param3, R >
|
|
template<typename R, class Param1, class Param2, class Param3>
|
|
class FastDelegate< R ( Param1, Param2, Param3 ) >
|
|
// Inherit from FastDelegate3 so that it can be treated just like a FastDelegate3
|
|
: public FastDelegate3 < Param1, Param2, Param3, R >
|
|
{
|
|
public:
|
|
// Make using the base type a bit easier via typedef.
|
|
typedef FastDelegate3 < Param1, Param2, Param3, R > BaseType;
|
|
|
|
// Allow users access to the specific type of this delegate.
|
|
typedef FastDelegate SelfType;
|
|
|
|
// Mimic the base class constructors.
|
|
FastDelegate() : BaseType() { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(Y * pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3 ))
|
|
: BaseType(pthis, function_to_bind) { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(const Y *pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3 ) const)
|
|
: BaseType(pthis, function_to_bind)
|
|
{ }
|
|
|
|
FastDelegate(R (*function_to_bind)( Param1 p1, Param2 p2, Param3 p3 ))
|
|
: BaseType(function_to_bind) { }
|
|
void operator = (const BaseType &x) {
|
|
*static_cast<BaseType*>(this) = x; }
|
|
};
|
|
|
|
//N=4
|
|
// Specialization to allow use of
|
|
// FastDelegate< R ( Param1, Param2, Param3, Param4 ) >
|
|
// instead of
|
|
// FastDelegate4 < Param1, Param2, Param3, Param4, R >
|
|
template<typename R, class Param1, class Param2, class Param3, class Param4>
|
|
class FastDelegate< R ( Param1, Param2, Param3, Param4 ) >
|
|
// Inherit from FastDelegate4 so that it can be treated just like a FastDelegate4
|
|
: public FastDelegate4 < Param1, Param2, Param3, Param4, R >
|
|
{
|
|
public:
|
|
// Make using the base type a bit easier via typedef.
|
|
typedef FastDelegate4 < Param1, Param2, Param3, Param4, R > BaseType;
|
|
|
|
// Allow users access to the specific type of this delegate.
|
|
typedef FastDelegate SelfType;
|
|
|
|
// Mimic the base class constructors.
|
|
FastDelegate() : BaseType() { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(Y * pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4 ))
|
|
: BaseType(pthis, function_to_bind) { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(const Y *pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4 ) const)
|
|
: BaseType(pthis, function_to_bind)
|
|
{ }
|
|
|
|
FastDelegate(R (*function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4 ))
|
|
: BaseType(function_to_bind) { }
|
|
void operator = (const BaseType &x) {
|
|
*static_cast<BaseType*>(this) = x; }
|
|
};
|
|
|
|
//N=5
|
|
// Specialization to allow use of
|
|
// FastDelegate< R ( Param1, Param2, Param3, Param4, Param5 ) >
|
|
// instead of
|
|
// FastDelegate5 < Param1, Param2, Param3, Param4, Param5, R >
|
|
template<typename R, class Param1, class Param2, class Param3, class Param4, class Param5>
|
|
class FastDelegate< R ( Param1, Param2, Param3, Param4, Param5 ) >
|
|
// Inherit from FastDelegate5 so that it can be treated just like a FastDelegate5
|
|
: public FastDelegate5 < Param1, Param2, Param3, Param4, Param5, R >
|
|
{
|
|
public:
|
|
// Make using the base type a bit easier via typedef.
|
|
typedef FastDelegate5 < Param1, Param2, Param3, Param4, Param5, R > BaseType;
|
|
|
|
// Allow users access to the specific type of this delegate.
|
|
typedef FastDelegate SelfType;
|
|
|
|
// Mimic the base class constructors.
|
|
FastDelegate() : BaseType() { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(Y * pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5 ))
|
|
: BaseType(pthis, function_to_bind) { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(const Y *pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5 ) const)
|
|
: BaseType(pthis, function_to_bind)
|
|
{ }
|
|
|
|
FastDelegate(R (*function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5 ))
|
|
: BaseType(function_to_bind) { }
|
|
void operator = (const BaseType &x) {
|
|
*static_cast<BaseType*>(this) = x; }
|
|
};
|
|
|
|
//N=6
|
|
// Specialization to allow use of
|
|
// FastDelegate< R ( Param1, Param2, Param3, Param4, Param5, Param6 ) >
|
|
// instead of
|
|
// FastDelegate6 < Param1, Param2, Param3, Param4, Param5, Param6, R >
|
|
template<typename R, class Param1, class Param2, class Param3, class Param4, class Param5, class Param6>
|
|
class FastDelegate< R ( Param1, Param2, Param3, Param4, Param5, Param6 ) >
|
|
// Inherit from FastDelegate6 so that it can be treated just like a FastDelegate6
|
|
: public FastDelegate6 < Param1, Param2, Param3, Param4, Param5, Param6, R >
|
|
{
|
|
public:
|
|
// Make using the base type a bit easier via typedef.
|
|
typedef FastDelegate6 < Param1, Param2, Param3, Param4, Param5, Param6, R > BaseType;
|
|
|
|
// Allow users access to the specific type of this delegate.
|
|
typedef FastDelegate SelfType;
|
|
|
|
// Mimic the base class constructors.
|
|
FastDelegate() : BaseType() { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(Y * pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6 ))
|
|
: BaseType(pthis, function_to_bind) { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(const Y *pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6 ) const)
|
|
: BaseType(pthis, function_to_bind)
|
|
{ }
|
|
|
|
FastDelegate(R (*function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6 ))
|
|
: BaseType(function_to_bind) { }
|
|
void operator = (const BaseType &x) {
|
|
*static_cast<BaseType*>(this) = x; }
|
|
};
|
|
|
|
//N=7
|
|
// Specialization to allow use of
|
|
// FastDelegate< R ( Param1, Param2, Param3, Param4, Param5, Param6, Param7 ) >
|
|
// instead of
|
|
// FastDelegate7 < Param1, Param2, Param3, Param4, Param5, Param6, Param7, R >
|
|
template<typename R, class Param1, class Param2, class Param3, class Param4, class Param5, class Param6, class Param7>
|
|
class FastDelegate< R ( Param1, Param2, Param3, Param4, Param5, Param6, Param7 ) >
|
|
// Inherit from FastDelegate7 so that it can be treated just like a FastDelegate7
|
|
: public FastDelegate7 < Param1, Param2, Param3, Param4, Param5, Param6, Param7, R >
|
|
{
|
|
public:
|
|
// Make using the base type a bit easier via typedef.
|
|
typedef FastDelegate7 < Param1, Param2, Param3, Param4, Param5, Param6, Param7, R > BaseType;
|
|
|
|
// Allow users access to the specific type of this delegate.
|
|
typedef FastDelegate SelfType;
|
|
|
|
// Mimic the base class constructors.
|
|
FastDelegate() : BaseType() { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(Y * pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7 ))
|
|
: BaseType(pthis, function_to_bind) { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(const Y *pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7 ) const)
|
|
: BaseType(pthis, function_to_bind)
|
|
{ }
|
|
|
|
FastDelegate(R (*function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7 ))
|
|
: BaseType(function_to_bind) { }
|
|
void operator = (const BaseType &x) {
|
|
*static_cast<BaseType*>(this) = x; }
|
|
};
|
|
|
|
//N=8
|
|
// Specialization to allow use of
|
|
// FastDelegate< R ( Param1, Param2, Param3, Param4, Param5, Param6, Param7, Param8 ) >
|
|
// instead of
|
|
// FastDelegate8 < Param1, Param2, Param3, Param4, Param5, Param6, Param7, Param8, R >
|
|
template<typename R, class Param1, class Param2, class Param3, class Param4, class Param5, class Param6, class Param7, class Param8>
|
|
class FastDelegate< R ( Param1, Param2, Param3, Param4, Param5, Param6, Param7, Param8 ) >
|
|
// Inherit from FastDelegate8 so that it can be treated just like a FastDelegate8
|
|
: public FastDelegate8 < Param1, Param2, Param3, Param4, Param5, Param6, Param7, Param8, R >
|
|
{
|
|
public:
|
|
// Make using the base type a bit easier via typedef.
|
|
typedef FastDelegate8 < Param1, Param2, Param3, Param4, Param5, Param6, Param7, Param8, R > BaseType;
|
|
|
|
// Allow users access to the specific type of this delegate.
|
|
typedef FastDelegate SelfType;
|
|
|
|
// Mimic the base class constructors.
|
|
FastDelegate() : BaseType() { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(Y * pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8 ))
|
|
: BaseType(pthis, function_to_bind) { }
|
|
|
|
template < class X, class Y >
|
|
FastDelegate(const Y *pthis,
|
|
R (X::* function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8 ) const)
|
|
: BaseType(pthis, function_to_bind)
|
|
{ }
|
|
|
|
FastDelegate(R (*function_to_bind)( Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8 ))
|
|
: BaseType(function_to_bind) { }
|
|
void operator = (const BaseType &x) {
|
|
*static_cast<BaseType*>(this) = x; }
|
|
};
|
|
|
|
|
|
#endif //FASTDELEGATE_ALLOW_FUNCTION_TYPE_SYNTAX
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
// Fast Delegates, part 5:
|
|
//
|
|
// MakeDelegate() helper function
|
|
//
|
|
// MakeDelegate(&x, &X::func) returns a fastdelegate of the type
|
|
// necessary for calling x.func() with the correct number of arguments.
|
|
// This makes it possible to eliminate many typedefs from user code.
|
|
//
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
// Also declare overloads of a MakeDelegate() global function to
|
|
// reduce the need for typedefs.
|
|
// We need seperate overloads for const and non-const member functions.
|
|
// Also, because of the weird rule about the class of derived member function pointers,
|
|
// implicit downcasts may need to be applied later to the 'this' pointer.
|
|
// That's why two classes (X and Y) appear in the definitions. Y must be implicitly
|
|
// castable to X.
|
|
|
|
// Workaround for VC6. VC6 needs void return types converted into DefaultVoid.
|
|
// GCC 3.2 and later won't compile this unless it's preceded by 'typename',
|
|
// but VC6 doesn't allow 'typename' in this context.
|
|
// So, I have to use a macro.
|
|
|
|
#ifdef FASTDLGT_VC6
|
|
#define FASTDLGT_RETTYPE detail::VoidToDefaultVoid<RetType>::type
|
|
#else
|
|
#define FASTDLGT_RETTYPE RetType
|
|
#endif
|
|
|
|
//N=0
|
|
template <class X, class Y, class RetType>
|
|
FastDelegate0<FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)()) {
|
|
return FastDelegate0<FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
template <class X, class Y, class RetType>
|
|
FastDelegate0<FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)() const) {
|
|
return FastDelegate0<FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
//N=1
|
|
template <class X, class Y, class Param1, class RetType>
|
|
FastDelegate1<Param1, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1)) {
|
|
return FastDelegate1<Param1, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
template <class X, class Y, class Param1, class RetType>
|
|
FastDelegate1<Param1, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1) const) {
|
|
return FastDelegate1<Param1, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
//N=2
|
|
template <class X, class Y, class Param1, class Param2, class RetType>
|
|
FastDelegate2<Param1, Param2, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2)) {
|
|
return FastDelegate2<Param1, Param2, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
template <class X, class Y, class Param1, class Param2, class RetType>
|
|
FastDelegate2<Param1, Param2, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2) const) {
|
|
return FastDelegate2<Param1, Param2, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
//N=3
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class RetType>
|
|
FastDelegate3<Param1, Param2, Param3, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3)) {
|
|
return FastDelegate3<Param1, Param2, Param3, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class RetType>
|
|
FastDelegate3<Param1, Param2, Param3, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3) const) {
|
|
return FastDelegate3<Param1, Param2, Param3, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
//N=4
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class Param4, class RetType>
|
|
FastDelegate4<Param1, Param2, Param3, Param4, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3, Param4 p4)) {
|
|
return FastDelegate4<Param1, Param2, Param3, Param4, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class Param4, class RetType>
|
|
FastDelegate4<Param1, Param2, Param3, Param4, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3, Param4 p4) const) {
|
|
return FastDelegate4<Param1, Param2, Param3, Param4, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
//N=5
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class Param4, class Param5, class RetType>
|
|
FastDelegate5<Param1, Param2, Param3, Param4, Param5, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5)) {
|
|
return FastDelegate5<Param1, Param2, Param3, Param4, Param5, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class Param4, class Param5, class RetType>
|
|
FastDelegate5<Param1, Param2, Param3, Param4, Param5, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5) const) {
|
|
return FastDelegate5<Param1, Param2, Param3, Param4, Param5, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
//N=6
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class Param4, class Param5, class Param6, class RetType>
|
|
FastDelegate6<Param1, Param2, Param3, Param4, Param5, Param6, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6)) {
|
|
return FastDelegate6<Param1, Param2, Param3, Param4, Param5, Param6, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class Param4, class Param5, class Param6, class RetType>
|
|
FastDelegate6<Param1, Param2, Param3, Param4, Param5, Param6, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6) const) {
|
|
return FastDelegate6<Param1, Param2, Param3, Param4, Param5, Param6, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
//N=7
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class Param4, class Param5, class Param6, class Param7, class RetType>
|
|
FastDelegate7<Param1, Param2, Param3, Param4, Param5, Param6, Param7, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7)) {
|
|
return FastDelegate7<Param1, Param2, Param3, Param4, Param5, Param6, Param7, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class Param4, class Param5, class Param6, class Param7, class RetType>
|
|
FastDelegate7<Param1, Param2, Param3, Param4, Param5, Param6, Param7, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7) const) {
|
|
return FastDelegate7<Param1, Param2, Param3, Param4, Param5, Param6, Param7, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
//N=8
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class Param4, class Param5, class Param6, class Param7, class Param8, class RetType>
|
|
FastDelegate8<Param1, Param2, Param3, Param4, Param5, Param6, Param7, Param8, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8)) {
|
|
return FastDelegate8<Param1, Param2, Param3, Param4, Param5, Param6, Param7, Param8, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
template <class X, class Y, class Param1, class Param2, class Param3, class Param4, class Param5, class Param6, class Param7, class Param8, class RetType>
|
|
FastDelegate8<Param1, Param2, Param3, Param4, Param5, Param6, Param7, Param8, FASTDLGT_RETTYPE> MakeDelegate(Y* x, RetType (X::*func)(Param1 p1, Param2 p2, Param3 p3, Param4 p4, Param5 p5, Param6 p6, Param7 p7, Param8 p8) const) {
|
|
return FastDelegate8<Param1, Param2, Param3, Param4, Param5, Param6, Param7, Param8, FASTDLGT_RETTYPE>(x, func);
|
|
}
|
|
|
|
|
|
// clean up after ourselves...
|
|
#undef FASTDLGT_RETTYPE
|
|
|
|
} // namespace fastdelegate
|
|
|
|
#endif // !defined(FASTDELEGATE_H)
|
|
|