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282 lines
7.9 KiB
282 lines
7.9 KiB
/* /////////////////////////////////////////////////////////////////////////
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* File: pantheios/inserters/adaptor.hpp
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*
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* Purpose: Inserter adaptors for the Pantheios application layer.
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*
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* Created: 29th July 2006
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* Updated: 18th June 2012
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*
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* Home: http://www.pantheios.org/
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*
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* Copyright (c) 2006-2012, Matthew Wilson and Synesis Software
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* - Neither the name(s) of Matthew Wilson and Synesis Software nor the
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* names of any contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* ////////////////////////////////////////////////////////////////////// */
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/** \file pantheios/inserters/adaptor.hpp
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*
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* [C++ only] Inserter adaptors for the Pantheios application layer.
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*/
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#ifndef PANTHEIOS_INCL_PANTHEIOS_INSERTERS_HPP_INSERTER
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#define PANTHEIOS_INCL_PANTHEIOS_INSERTERS_HPP_INSERTER
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/* /////////////////////////////////////////////////////////////////////////
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* Version information
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*/
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#ifndef PANTHEIOS_DOCUMENTATION_SKIP_SECTION
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# define PANTHEIOS_VER_PANTHEIOS_INSERTERS_HPP_INSERTER_MAJOR 1
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# define PANTHEIOS_VER_PANTHEIOS_INSERTERS_HPP_INSERTER_MINOR 2
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# define PANTHEIOS_VER_PANTHEIOS_INSERTERS_HPP_INSERTER_REVISION 4
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# define PANTHEIOS_VER_PANTHEIOS_INSERTERS_HPP_INSERTER_EDIT 17
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#endif /* !PANTHEIOS_DOCUMENTATION_SKIP_SECTION */
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/* /////////////////////////////////////////////////////////////////////////
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* Includes
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*/
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#ifndef PANTHEIOS_INCL_PANTHEIOS_H_PANTHEIOS
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# include <pantheios/pantheios.h>
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#endif /* !PANTHEIOS_INCL_PANTHEIOS_H_PANTHEIOS */
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/* /////////////////////////////////////////////////////////////////////////
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* Namespace
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*/
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#if !defined(PANTHEIOS_NO_NAMESPACE)
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namespace pantheios
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{
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#endif /* !PANTHEIOS_NO_NAMESPACE */
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/* /////////////////////////////////////////////////////////////////////////
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* Classes
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*/
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/**
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*
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* \ingroup group__application_layer_interface__inserters
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*
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*/
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template< ss_typename_param_k T
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, ss_typename_param_k S
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>
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class inserter
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{
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public:
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typedef T value_type;
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typedef S string_type;
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typedef inserter<T, S> class_type;
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public:
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inserter(T value, S (*pfn)(T))
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: m_sourceValue(value)
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, m_convertedValue()
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, m_pfn(pfn)
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, m_bInitialised(false)
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{}
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public:
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pan_char_t const* data() const
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{
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if(!m_bInitialised)
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{
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convert_();
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}
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return m_convertedValue.data();
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}
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size_t length() const
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{
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if(!m_bInitialised)
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{
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convert_();
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}
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return m_convertedValue.length();
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}
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private:
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void convert_() const
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{
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const_cast<class_type*>(this)->convert_();
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}
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void convert_()
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{
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m_convertedValue = m_pfn(m_sourceValue);
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m_bInitialised = true;
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}
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private:
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T m_sourceValue;
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S m_convertedValue;
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S (*m_pfn)(T);
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bool m_bInitialised;
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private:
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class_type& operator =(class_type const&);
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};
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/* /////////////////////////////////////////////////////////////////////////
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* Inserter functions
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*/
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template< ss_typename_param_k T
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, ss_typename_param_k S
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>
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inline inserter<T, S> insert(T &value, S (*pfn)(T))
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{
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return inserter<T, S>(value, pfn);
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}
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#if 0
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template< ss_typename_param_k T
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, ss_typename_param_k S
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>
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inline inserter<T const&, S> insert(T const& value, S (*pfn)(T const&))
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{
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return inserter<T const&, S>(value, pfn);
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}
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template< ss_typename_param_k T
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, ss_typename_param_k S
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>
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inline inserter<T const*, S> insert(T const* value, S (*pfn)(T const*))
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{
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return inserter<T const*, S>(value, pfn);
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}
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template< ss_typename_param_k T
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, ss_typename_param_k S
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>
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inline inserter<T*, S> insert(T *value, S (*pfn)(T*))
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{
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return inserter<T*, S>(value, pfn);
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}
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#endif /* 0 */
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/* /////////////////////////////////////////////////////////////////////////
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* Shim functions
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*/
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# if !defined(PANTHEIOS_NO_NAMESPACE)
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namespace shims
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{
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# endif /* !PANTHEIOS_NO_NAMESPACE */
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template< ss_typename_param_k T
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, ss_typename_param_k S
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>
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inline
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# ifdef PANTHEIOS_USE_WIDE_STRINGS
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wchar_t const*
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c_str_data_w(inserter<T, S> const& i)
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# else /* ? PANTHEIOS_USE_WIDE_STRINGS */
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char const*
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c_str_data_a(inserter<T, S> const& i)
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# endif /* PANTHEIOS_USE_WIDE_STRINGS */
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{
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return i.data();
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}
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template< ss_typename_param_k T
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, ss_typename_param_k S
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>
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inline
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size_t
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# ifdef PANTHEIOS_USE_WIDE_STRINGS
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c_str_len_w(inserter<T, S> const& i)
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# else /* ? PANTHEIOS_USE_WIDE_STRINGS */
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c_str_len_a(inserter<T, S> const& i)
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# endif /* PANTHEIOS_USE_WIDE_STRINGS */
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{
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return i.length();
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}
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# if !defined(PANTHEIOS_NO_NAMESPACE)
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} /* namespace shims */
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# if defined(STLSOFT_COMPILER_IS_GCC)
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/* GCC does not seem to correctly handle the phases of
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* processing of C++ templates, so we need to 'use' the
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* shims into the same namespace as the inserter class
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* in order that ADL can suffice instead.
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*/
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# ifdef PANTHEIOS_USE_WIDE_STRINGS
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using ::pantheios::shims::c_str_data_w;
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using ::pantheios::shims::c_str_len_w;
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# else /* ? PANTHEIOS_USE_WIDE_STRINGS */
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using ::pantheios::shims::c_str_data_a;
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using ::pantheios::shims::c_str_len_a;
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# endif /* PANTHEIOS_USE_WIDE_STRINGS */
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# endif /* compiler */
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# endif /* !PANTHEIOS_NO_NAMESPACE */
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/* /////////////////////////////////////////////////////////////////////////
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* Namespace
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*/
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#if !defined(PANTHEIOS_NO_NAMESPACE)
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} /* namespace pantheios */
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namespace stlsoft
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{
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// 'Export' the string access shims into the STLSoft namespace
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//
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// c_str_ptr(_a) is not necessary for version 1.0 of Pantheios, but it's
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// defined and exported in order to allow for the case where someone
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// may find a legitimate use for the conversion classes additional to
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// the type-tunneling of the Pantheios API.
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# ifdef PANTHEIOS_USE_WIDE_STRINGS
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using ::pantheios::shims::c_str_data_w;
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using ::pantheios::shims::c_str_len_w;
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# else /* ? PANTHEIOS_USE_WIDE_STRINGS */
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using ::pantheios::shims::c_str_data_a;
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using ::pantheios::shims::c_str_len_a;
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# endif /* PANTHEIOS_USE_WIDE_STRINGS */
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}
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#endif /* !PANTHEIOS_NO_NAMESPACE */
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/* /////////////////////////////////////////////////////////////////////////
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* Inclusion
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*/
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#ifdef STLSOFT_PPF_pragma_once_SUPPORT
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# pragma once
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#endif /* STLSOFT_PPF_pragma_once_SUPPORT */
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/* ////////////////////////////////////////////////////////////////////// */
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#endif /* !PANTHEIOS_INCL_PANTHEIOS_INSERTERS_HPP_INSERTER */
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/* ///////////////////////////// end of file //////////////////////////// */
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