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Diffstat (limited to 'stlport/stlport/stl/_function.h')
| -rw-r--r-- | stlport/stlport/stl/_function.h | 433 |
1 files changed, 433 insertions, 0 deletions
diff --git a/stlport/stlport/stl/_function.h b/stlport/stlport/stl/_function.h new file mode 100644 index 0000000..bf4ad3e --- /dev/null +++ b/stlport/stlport/stl/_function.h @@ -0,0 +1,433 @@ +/* + * + * Copyright (c) 1994 + * Hewlett-Packard Company + * + * Copyright (c) 1996-1998 + * Silicon Graphics Computer Systems, Inc. + * + * Copyright (c) 1997 + * Moscow Center for SPARC Technology + * + * Copyright (c) 1999 + * Boris Fomitchev + * + * This material is provided "as is", with absolutely no warranty expressed + * or implied. Any use is at your own risk. + * + * Permission to use or copy this software for any purpose is hereby granted + * without fee, provided the above notices are retained on all copies. + * Permission to modify the code and to distribute modified code is granted, + * provided the above notices are retained, and a notice that the code was + * modified is included with the above copyright notice. + * + */ + +/* NOTE: This is an internal header file, included by other STL headers. + * You should not attempt to use it directly. + */ + +#ifndef _STLP_INTERNAL_FUNCTION_H +#define _STLP_INTERNAL_FUNCTION_H + +#ifndef _STLP_TYPE_TRAITS_H +# include <stl/type_traits.h> +#endif + +#ifndef _STLP_INTERNAL_FUNCTION_BASE_H +# include <stl/_function_base.h> +#endif + +_STLP_BEGIN_NAMESPACE + +template <class _Tp> +struct not_equal_to : public binary_function<_Tp, _Tp, bool> { + bool operator()(const _Tp& __x, const _Tp& __y) const { return __x != __y; } +}; + +template <class _Tp> +struct greater : public binary_function<_Tp, _Tp, bool> { + bool operator()(const _Tp& __x, const _Tp& __y) const { return __x > __y; } +}; + +template <class _Tp> +struct greater_equal : public binary_function<_Tp, _Tp, bool> { + bool operator()(const _Tp& __x, const _Tp& __y) const { return __x >= __y; } +}; + +template <class _Tp> +struct less_equal : public binary_function<_Tp, _Tp, bool> { + bool operator()(const _Tp& __x, const _Tp& __y) const { return __x <= __y; } +}; + +template <class _Tp> +struct divides : public binary_function<_Tp, _Tp, _Tp> { + _Tp operator()(const _Tp& __x, const _Tp& __y) const { return __x / __y; } +}; + +template <class _Tp> +struct modulus : public binary_function<_Tp, _Tp, _Tp> { + _Tp operator()(const _Tp& __x, const _Tp& __y) const { return __x % __y; } +}; + +template <class _Tp> +struct negate : public unary_function<_Tp, _Tp> { + _Tp operator()(const _Tp& __x) const { return -__x; } +}; + +template <class _Tp> +struct logical_and : public binary_function<_Tp, _Tp, bool> { + bool operator()(const _Tp& __x, const _Tp& __y) const { return __x && __y; } +}; + +template <class _Tp> +struct logical_or : public binary_function<_Tp, _Tp,bool> { + bool operator()(const _Tp& __x, const _Tp& __y) const { return __x || __y; } +}; + +template <class _Tp> +struct logical_not : public unary_function<_Tp, bool> { + bool operator()(const _Tp& __x) const { return !__x; } +}; + +#if !defined (_STLP_NO_EXTENSIONS) +// identity_element (not part of the C++ standard). +template <class _Tp> inline _Tp identity_element(plus<_Tp>) { return _Tp(0); } +template <class _Tp> inline _Tp identity_element(multiplies<_Tp>) { return _Tp(1); } +#endif + +#if defined (_STLP_BASE_TYPEDEF_BUG) +// this workaround is needed for SunPro 4.0.1 +// suggested by "Martin Abernethy" <gma@paston.co.uk>: + +// We have to introduce the XXary_predicate_aux structures in order to +// access the argument and return types of predicate functions supplied +// as type parameters. SUN C++ 4.0.1 compiler gives errors for template type parameters +// of the form 'name1::name2', where name1 is itself a type parameter. +template <class _Pair> +struct __pair_aux : private _Pair { + typedef typename _Pair::first_type first_type; + typedef typename _Pair::second_type second_type; +}; + +template <class _Operation> +struct __unary_fun_aux : private _Operation { + typedef typename _Operation::argument_type argument_type; + typedef typename _Operation::result_type result_type; +}; + +template <class _Operation> +struct __binary_fun_aux : private _Operation { + typedef typename _Operation::first_argument_type first_argument_type; + typedef typename _Operation::second_argument_type second_argument_type; + typedef typename _Operation::result_type result_type; +}; + +# define __UNARY_ARG(__Operation,__type) __unary_fun_aux<__Operation>::__type +# define __BINARY_ARG(__Operation,__type) __binary_fun_aux<__Operation>::__type +# define __PAIR_ARG(__Pair,__type) __pair_aux<__Pair>::__type +#else +# define __UNARY_ARG(__Operation,__type) __Operation::__type +# define __BINARY_ARG(__Operation,__type) __Operation::__type +# define __PAIR_ARG(__Pair,__type) __Pair::__type +#endif + +template <class _Predicate> +class unary_negate + : public unary_function<typename __UNARY_ARG(_Predicate, argument_type), bool> { + typedef unary_function<typename __UNARY_ARG(_Predicate, argument_type), bool> _Base; +public: + typedef typename _Base::argument_type argument_type; +private: + typedef typename __call_traits<argument_type>::const_param_type _ArgParamType; +protected: + _Predicate _M_pred; +public: + explicit unary_negate(const _Predicate& __x) : _M_pred(__x) {} + bool operator()(_ArgParamType __x) const { + return !_M_pred(__x); + } +}; + +template <class _Predicate> +inline unary_negate<_Predicate> +not1(const _Predicate& __pred) { + return unary_negate<_Predicate>(__pred); +} + +template <class _Predicate> +class binary_negate + : public binary_function<typename __BINARY_ARG(_Predicate, first_argument_type), + typename __BINARY_ARG(_Predicate, second_argument_type), + bool> { + typedef binary_function<typename __BINARY_ARG(_Predicate, first_argument_type), + typename __BINARY_ARG(_Predicate, second_argument_type), + bool> _Base; +public: + typedef typename _Base::first_argument_type first_argument_type; + typedef typename _Base::second_argument_type second_argument_type; +private: + typedef typename __call_traits<first_argument_type>::const_param_type _FstArgParamType; + typedef typename __call_traits<second_argument_type>::const_param_type _SndArgParamType; +protected: + _Predicate _M_pred; +public: + explicit binary_negate(const _Predicate& __x) : _M_pred(__x) {} + bool operator()(_FstArgParamType __x, _SndArgParamType __y) const { + return !_M_pred(__x, __y); + } +}; + +template <class _Predicate> +inline binary_negate<_Predicate> +not2(const _Predicate& __pred) { + return binary_negate<_Predicate>(__pred); +} + +template <class _Operation> +class binder1st : + public unary_function<typename __BINARY_ARG(_Operation, second_argument_type), + typename __BINARY_ARG(_Operation, result_type) > { + typedef unary_function<typename __BINARY_ARG(_Operation, second_argument_type), + typename __BINARY_ARG(_Operation, result_type) > _Base; +public: + typedef typename _Base::argument_type argument_type; + typedef typename _Base::result_type result_type; +private: + typedef typename __call_traits<argument_type>::param_type _ArgParamType; + typedef typename __call_traits<argument_type>::const_param_type _ConstArgParamType; + typedef typename __call_traits<typename _Operation::first_argument_type>::const_param_type _ValueParamType; +protected: + //op is a Standard name (20.3.6.1), do no make it STLport naming convention compliant. + _Operation op; + typename _Operation::first_argument_type _M_value; +public: + binder1st(const _Operation& __x, _ValueParamType __y) + : op(__x), _M_value(__y) {} + + result_type operator()(_ConstArgParamType __x) const + { return op(_M_value, __x); } + // DR 109 Missing binders for non-const sequence elements + result_type operator()(_ArgParamType __x) const + { return op(_M_value, __x); } +}; + +template <class _Operation, class _Tp> +inline binder1st<_Operation> +bind1st(const _Operation& __fn, const _Tp& __x) { + typedef typename _Operation::first_argument_type _Arg1_type; + return binder1st<_Operation>(__fn, _Arg1_type(__x)); +} + +template <class _Operation> +class binder2nd + : public unary_function<typename __BINARY_ARG(_Operation, first_argument_type), + typename __BINARY_ARG(_Operation, result_type)> { + typedef unary_function<typename __BINARY_ARG(_Operation, first_argument_type), + typename __BINARY_ARG(_Operation, result_type)> _Base; +public: + typedef typename _Base::argument_type argument_type; + typedef typename _Base::result_type result_type; +private: + typedef typename __call_traits<argument_type>::param_type _ArgParamType; + typedef typename __call_traits<argument_type>::const_param_type _ConstArgParamType; + typedef typename __call_traits<typename _Operation::second_argument_type>::const_param_type _ValueParamType; +protected: + //op is a Standard name (20.3.6.3), do no make it STLport naming convention compliant. + _Operation op; + typename _Operation::second_argument_type value; +public: + binder2nd(const _Operation& __x, _ValueParamType __y) + : op(__x), value(__y) {} + + result_type operator()(_ConstArgParamType __x) const + { return op(__x, value); } + // DR 109 Missing binders for non-const sequence elements + result_type operator()(_ArgParamType __x) const + { return op(__x, value); } +}; + +template <class _Operation, class _Tp> +inline binder2nd<_Operation> +bind2nd(const _Operation& __fn, const _Tp& __x) { + typedef typename _Operation::second_argument_type _Arg2_type; + return binder2nd<_Operation>(__fn, _Arg2_type(__x)); +} + +#if !defined (_STLP_NO_EXTENSIONS) +// unary_compose and binary_compose (extensions, not part of the standard). + +template <class _Operation1, class _Operation2> +class unary_compose : + public unary_function<typename __UNARY_ARG(_Operation2, argument_type), + typename __UNARY_ARG(_Operation1, result_type)> { + typedef unary_function<typename __UNARY_ARG(_Operation2, argument_type), + typename __UNARY_ARG(_Operation1, result_type)> _Base; +public: + typedef typename _Base::argument_type argument_type; + typedef typename _Base::result_type result_type; +private: + typedef typename __call_traits<argument_type>::const_param_type _ArgParamType; +protected: + _Operation1 _M_fn1; + _Operation2 _M_fn2; +public: + unary_compose(const _Operation1& __x, const _Operation2& __y) + : _M_fn1(__x), _M_fn2(__y) {} + + result_type operator()(_ArgParamType __x) const { + return _M_fn1(_M_fn2(__x)); + } +}; + +template <class _Operation1, class _Operation2> +inline unary_compose<_Operation1,_Operation2> +compose1(const _Operation1& __fn1, const _Operation2& __fn2) { + return unary_compose<_Operation1,_Operation2>(__fn1, __fn2); +} + +template <class _Operation1, class _Operation2, class _Operation3> +class binary_compose : + public unary_function<typename __UNARY_ARG(_Operation2, argument_type), + typename __BINARY_ARG(_Operation1, result_type)> { + typedef unary_function<typename __UNARY_ARG(_Operation2, argument_type), + typename __BINARY_ARG(_Operation1, result_type)> _Base; +public: + typedef typename _Base::argument_type argument_type; + typedef typename _Base::result_type result_type; +private: + typedef typename __call_traits<argument_type>::const_param_type _ArgParamType; +protected: + _Operation1 _M_fn1; + _Operation2 _M_fn2; + _Operation3 _M_fn3; +public: + binary_compose(const _Operation1& __x, const _Operation2& __y, + const _Operation3& __z) + : _M_fn1(__x), _M_fn2(__y), _M_fn3(__z) { } + + result_type operator()(_ArgParamType __x) const { + return _M_fn1(_M_fn2(__x), _M_fn3(__x)); + } +}; + +template <class _Operation1, class _Operation2, class _Operation3> +inline binary_compose<_Operation1, _Operation2, _Operation3> +compose2(const _Operation1& __fn1, const _Operation2& __fn2, + const _Operation3& __fn3) { + return binary_compose<_Operation1,_Operation2,_Operation3>(__fn1, __fn2, __fn3); +} + +// identity is an extension: it is not part of the standard. +template <class _Tp> struct identity : public _STLP_PRIV _Identity<_Tp> {}; +// select1st and select2nd are extensions: they are not part of the standard. +template <class _Pair> struct select1st : public _STLP_PRIV _Select1st<_Pair> {}; +template <class _Pair> struct select2nd : public _STLP_PRIV _Select2nd<_Pair> {}; + +template <class _Arg1, class _Arg2> +struct project1st : public _STLP_PRIV _Project1st<_Arg1, _Arg2> {}; + +template <class _Arg1, class _Arg2> +struct project2nd : public _STLP_PRIV _Project2nd<_Arg1, _Arg2> {}; + + +// constant_void_fun, constant_unary_fun, and constant_binary_fun are +// extensions: they are not part of the standard. (The same, of course, +// is true of the helper functions constant0, constant1, and constant2.) + +_STLP_MOVE_TO_PRIV_NAMESPACE + +template <class _Result> +struct _Constant_void_fun { + typedef _Result result_type; + result_type _M_val; + + _Constant_void_fun(const result_type& __v) : _M_val(__v) {} + const result_type& operator()() const { return _M_val; } +}; + +_STLP_MOVE_TO_STD_NAMESPACE + +template <class _Result> +struct constant_void_fun : public _STLP_PRIV _Constant_void_fun<_Result> { + constant_void_fun(const _Result& __v) + : _STLP_PRIV _Constant_void_fun<_Result>(__v) {} +}; + +template <class _Result, _STLP_DFL_TMPL_PARAM( _Argument , _Result) > +struct constant_unary_fun : public _STLP_PRIV _Constant_unary_fun<_Result, _Argument> { + constant_unary_fun(const _Result& __v) + : _STLP_PRIV _Constant_unary_fun<_Result, _Argument>(__v) {} +}; + +template <class _Result, _STLP_DFL_TMPL_PARAM( _Arg1 , _Result), _STLP_DFL_TMPL_PARAM( _Arg2 , _Arg1) > +struct constant_binary_fun + : public _STLP_PRIV _Constant_binary_fun<_Result, _Arg1, _Arg2> { + constant_binary_fun(const _Result& __v) + : _STLP_PRIV _Constant_binary_fun<_Result, _Arg1, _Arg2>(__v) {} +}; + +template <class _Result> +inline constant_void_fun<_Result> constant0(const _Result& __val) { + return constant_void_fun<_Result>(__val); +} + +template <class _Result> +inline constant_unary_fun<_Result,_Result> constant1(const _Result& __val) { + return constant_unary_fun<_Result,_Result>(__val); +} + +template <class _Result> +inline constant_binary_fun<_Result,_Result,_Result> +constant2(const _Result& __val) { + return constant_binary_fun<_Result,_Result,_Result>(__val); +} + +// subtractive_rng is an extension: it is not part of the standard. +// Note: this code assumes that int is 32 bits. +class subtractive_rng : public unary_function<_STLP_UINT32_T, _STLP_UINT32_T> { +private: + _STLP_UINT32_T _M_table[55]; + _STLP_UINT32_T _M_index1; + _STLP_UINT32_T _M_index2; +public: + _STLP_UINT32_T operator()(_STLP_UINT32_T __limit) { + _M_index1 = (_M_index1 + 1) % 55; + _M_index2 = (_M_index2 + 1) % 55; + _M_table[_M_index1] = _M_table[_M_index1] - _M_table[_M_index2]; + return _M_table[_M_index1] % __limit; + } + + void _M_initialize(_STLP_UINT32_T __seed) { + _STLP_UINT32_T __k = 1; + _M_table[54] = __seed; + _STLP_UINT32_T __i; + for (__i = 0; __i < 54; __i++) { + _STLP_UINT32_T __ii = (21 * (__i + 1) % 55) - 1; + _M_table[__ii] = __k; + __k = __seed - __k; + __seed = _M_table[__ii]; + } + for (int __loop = 0; __loop < 4; __loop++) { + for (__i = 0; __i < 55; __i++) + _M_table[__i] = _M_table[__i] - _M_table[(1 + __i + 30) % 55]; + } + _M_index1 = 0; + _M_index2 = 31; + } + + subtractive_rng(unsigned int __seed) { _M_initialize(__seed); } + subtractive_rng() { _M_initialize(161803398ul); } +}; + +#endif /* _STLP_NO_EXTENSIONS */ + +_STLP_END_NAMESPACE + +#include <stl/_function_adaptors.h> + +#endif /* _STLP_INTERNAL_FUNCTION_H */ + +// Local Variables: +// mode:C++ +// End: |