mirror of
https://github.com/GothenburgBitFactory/timewarrior.git
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77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright 2015, Paul Beckingham, Federico Hernandez.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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// http://www.opensource.org/licenses/mit-license.php
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//
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////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDED_LR0
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#define INCLUDED_LR0
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#include <Grammar.h>
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#include <map>
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#include <string>
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class LR0
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{
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public:
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LR0 ();
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void createParseTables (const Grammar&);
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void parse (const std::string&);
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void debug (bool);
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std::string dump () const;
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class Item
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{
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public:
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Item (const std::vector <std::string>&);
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bool advance ();
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private:
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std::vector <std::string> _rule;
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unsigned int _cursor;
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};
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class Closure : public std::vector <Item>
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{
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};
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class States : public std::vector <Closure>
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{
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};
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private:
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// bool expandNonTerminals (std::vector <std::vector <std::string>>&, States&, int);
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// std::string dump (std::vector <std::vector <std::string>>&, States&) const;
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private:
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// state column result
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// | | |
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std::map <int, std::map <std::string, std::string>> _actions;
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std::map <int, std::map <std::string, std::string>> _goto;
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bool _debug;
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};
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#endif
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////////////////////////////////////////////////////////////////////////////////
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