79 lines
2.3 KiB
C++
79 lines
2.3 KiB
C++
/*
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Copyright (c) 2015, Matthias Schiffer <mschiffer@universe-factory.net>
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All rights reserved.
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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 met:
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1. 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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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include <string>
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#include <unordered_set>
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#include <unordered_map>
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#include <utility>
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#include <vector>
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namespace solar {
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class state_t {
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private:
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struct sym_t {
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virtual ~sym_t() {}
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};
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struct nonterm_sym_t : public sym_t {
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std::string value;
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nonterm_sym_t(const std::string &value0) : value(value0) {}
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};
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struct term_sym_t : public sym_t {
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std::string value;
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term_sym_t(const std::string &value0) : value(value0) {}
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};
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struct char_sym_t : public sym_t {
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unsigned char value;
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char_sym_t(unsigned char value0) : value(value0) {}
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};
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typedef std::vector<sym_t> rhs_t;
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std::unordered_set<std::string> terminals;
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std::unordered_multimap<std::string, rhs_t> rules;
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std::string current_nonterm;
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rhs_t current_rule;
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public:
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void openRule(const std::string &nonterm);
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void addRuleTerminal(const std::string &term);
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void addRuleTerminal(unsigned char term);
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void addRuleNonterminal(const std::string &nonterm);
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void closeRule();
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};
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}
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