mirror of
https://github.com/GothenburgBitFactory/taskwarrior.git
synced 2025-09-09 00:30:36 +02:00
6ebee13fa4
- Added old (non-task) parsing code, as a basis for the new parser. - Added Tree object for parse trees. - Added top-level entry point for testing.
103 lines
2.8 KiB
C++
103 lines
2.8 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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// taskwarrior - a command line task list manager.
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//
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// Copyright 2006-2013, 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_PARSER
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#define INCLUDED_PARSER
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#include <algorithm>
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#include <map>
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#include <vector>
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#include <string>
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#include <Nibbler.h>
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#include <Tree.h>
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class Parser
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{
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public:
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Parser ();
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virtual ~Parser ();
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void grammar (const std::string&);
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virtual Tree* parse (const std::string&) = 0;
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void verbose ();
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void dump () const;
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protected:
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class Token
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{
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public:
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Token ();
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Token (const Token&);
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Token& operator= (const Token&);
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void clear ();
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std::string dump ();
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public:
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std::string value;
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char quantifier;
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};
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class Alternate : public std::vector <Token>
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{
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public:
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Alternate ();
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Alternate (const Alternate&);
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Alternate& operator= (const Alternate&);
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std::string dump ();
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};
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class Production : public std::vector <Alternate>
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{
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public:
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Production ();
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Production (const Production&);
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Production& operator= (const Production&);
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void tag (const std::string&);
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bool hasTag (const std::string&) const;
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void clear ();
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std::string dump ();
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private:
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std::vector <std::string> mTags;
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};
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private:
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bool bnfNibbleRule (Nibbler&, std::string&, Production&);
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bool bnfNibbleAlternate (Nibbler&, Alternate&);
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bool bnfNibbleToken (Nibbler&, Token&);
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void checkConsistency ();
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protected:
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std::string _primary;
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std::map <std::string, Production> _rules;
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bool _verbose;
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};
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#endif
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////////////////////////////////////////////////////////////////////////////////
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