author | Shabe Razvi <shaber@symbian.org> |
Thu, 02 Sep 2010 17:14:31 +0100 | |
branch | RCL_3 |
changeset 58 | 104bd6aeae10 |
parent 0 | e4d67989cc36 |
child 18 | 47c74d1534e1 |
permissions | -rw-r--r-- |
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#ifndef _fadapter_h_ |
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#define _fadapter_h_ |
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#include <functional> |
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// used as adaptor's return/argument type, |
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// to allow binders/composers usage |
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struct __void_tag {}; |
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#if !defined (STLPORT) || defined (_STLP_USE_NAMESPACES) |
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using std::unary_function; |
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#endif |
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template <class Result> |
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class pointer_to_void_function { |
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protected: |
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Result (*ptr)(); |
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public: |
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explicit pointer_to_void_function(Result (*x)()) : ptr(x) {} |
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Result operator()() const { return ptr(); } |
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Result operator()(__void_tag) const { return ptr(); } |
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}; |
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// to feed composers |
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template <class Arg1> |
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struct projectvoid : public unary_function<Arg1,__void_tag> { |
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__void_tag operator()(const Arg1& x) const { return __void_tag(); } |
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}; |
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#if !defined (_STLP_MEMBER_POINTER_PARAM_BUG) |
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template <class Result> |
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pointer_to_void_function<Result> ptr_fun(Result (*x)()) { |
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return pointer_to_void_function<Result>(x); |
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} |
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// alternate name |
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template <class Result> |
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pointer_to_void_function<Result> ptr_gen(Result (*x)()) { |
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return pointer_to_void_function<Result>(x); |
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} |
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#endif /* !defined (_STLP_MEMBER_POINTER_PARAM_BUG) */ |
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template <class Arg> |
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class pointer_to_unary_procedure /* :public unary_function<Arg, __void_tag> */ { |
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protected: |
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typedef void (*fun_type)(Arg); |
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fun_type ptr; |
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public: |
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typedef Arg argument_type; |
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pointer_to_unary_procedure() {} |
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pointer_to_unary_procedure(fun_type x) : ptr(x) {} |
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void operator() (Arg x) const { ptr(x); } |
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}; |
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template <class Arg> |
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inline pointer_to_unary_procedure<Arg> ptr_proc(void (*x)(Arg)) { |
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return pointer_to_unary_procedure<Arg>(x); |
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} |
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template <class Arg1, class Arg2> |
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class pointer_to_binary_procedure /* : public unary_function<Arg1, Arg2, __void_tag> */ { |
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protected: |
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typedef void (*fun_type)(Arg1, Arg2); |
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fun_type ptr; |
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public: |
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typedef Arg1 first_argument_type; |
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typedef Arg2 second_argument_type; |
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pointer_to_binary_procedure() {} |
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pointer_to_binary_procedure(fun_type x) : ptr(x) {} |
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void operator() (Arg1 x, Arg2 y) const { ptr(x, y); } |
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}; |
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template <class Arg1, class Arg2> |
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inline pointer_to_binary_procedure<Arg1, Arg2> ptr_proc(void (*x)(Arg1, Arg2)) { |
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return pointer_to_binary_procedure<Arg1, Arg2>(x); |
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} |
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#endif |