61 lines
1.6 KiB
C++
61 lines
1.6 KiB
C++
// This file is distributed under the BSD License.
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// See "license.txt" for details.
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// Copyright 2009-2011, Jonathan Turner (jonathan@emptycrate.com)
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// and Jason Turner (jason@emptycrate.com)
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// http://www.chaiscript.com
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#ifndef CHAISCRIPT_BAD_BOXED_CAST_HPP_
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#define CHAISCRIPT_BAD_BOXED_CAST_HPP_
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#include "type_info.hpp"
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namespace chaiscript
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{
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namespace exception
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{
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/// \brief Thrown in the event that a Boxed_Value cannot be cast to the desired type
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///
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/// It is used internally during function dispatch and may be used by the end user.
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///
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/// \sa chaiscript::boxed_cast
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class bad_boxed_cast : public std::bad_cast
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{
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public:
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bad_boxed_cast(const Type_Info &t_from, const std::type_info &t_to,
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const std::string &t_what) throw()
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: from(t_from), to(&t_to), m_what(t_what)
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{
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}
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bad_boxed_cast(const Type_Info &t_from, const std::type_info &t_to) throw()
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: from(t_from), to(&t_to), m_what("Cannot perform boxed_cast")
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{
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}
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bad_boxed_cast(const std::string &t_what) throw()
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: m_what(t_what)
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{
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}
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virtual ~bad_boxed_cast() throw() {}
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/// \brief Description of what error occured
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virtual const char * what() const throw()
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{
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return m_what.c_str();
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}
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Type_Info from; ///< Type_Info contained in the Boxed_Value
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const std::type_info *to; ///< std::type_info of the desired (but failed) result type
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private:
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std::string m_what;
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};
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}
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}
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#endif
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