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45 lines
1,001 B
C++
45 lines
1,001 B
C++
/*
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* Copyright (c) 2008 Andrew Garrett.
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* Copyright (c) 2008 River Tarnell <river@wikimedia.org>
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* Derived from public domain code contributed by Victor Vasiliev.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely. This software is provided 'as-is', without any express or
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* implied warranty.
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*/
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#ifndef EXPRESSOR_H
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#define EXPRESSOR_H
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#include <string>
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#include <vector>
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#include <boost/noncopyable.hpp>
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#include <boost/function.hpp>
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#include "aftypes.h"
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namespace afp {
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struct parser_grammar;
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struct expressor : boost::noncopyable {
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typedef boost::function<datum (std::vector<datum>)> func_t;
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expressor();
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~expressor();
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datum evaluate(std::string const &expr) const;
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void add_variable(std::string const &name, datum value);
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void add_function(std::string const &name, func_t value);
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private:
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parser_grammar *grammar_;
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};
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} // namespace afp
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#endif /* !EXPRESSOR_H */
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