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60 lines
1.3 KiB
C++
60 lines
1.3 KiB
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 <stdexcept>
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#include <iostream>
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#include <boost/noncopyable.hpp>
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#include <boost/function.hpp>
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#include <boost/spirit/symbols.hpp>
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#include <unicode/uchar.h>
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#include "aftypes.h"
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#include "afstring.h"
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#include "affunctions.h"
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#include "fray.h"
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#include "parserdefs.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<u32datum (std::vector<u32datum>)> func_t;
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expressor();
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~expressor();
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u32datum evaluate(u32fray const &expr) const;
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void print_xml(std::ostream &strm, u32fray const &expr) const;
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void add_variable(u32fray const &name, u32datum const &value);
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void add_function(u32fray const &name, func_t value);
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void clear();
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void clear_functions();
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void clear_variables();
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private:
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parser_state state_;
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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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