e08d840ba1
- Broke out expression handling into two distinct flavors: filter and expression. Filters need lots of preparation and mapping, which includes implicit 'AND' operators, expansion of syntactic sugar like /pattern/ etc and evaluate to a Boolean. Expressions are simpler wiht less preparation, and evaluate to a Variant.
74 lines
2.1 KiB
C++
74 lines
2.1 KiB
C++
////////////////////////////////////////////////////////////////////////////////
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// taskwarrior - a command line task list manager.
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//
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// Copyright 2006 - 2011, Paul Beckingham, Federico Hernandez.
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// All rights reserved.
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//
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// This program is free software; you can redistribute it and/or modify it under
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// the terms of the GNU General Public License as published by the Free Software
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// Foundation; either version 2 of the License, or (at your option) any later
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// version.
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//
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// This program is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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// FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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// details.
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//
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// You should have received a copy of the GNU General Public License along with
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// this program; if not, write to the
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//
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// Free Software Foundation, Inc.,
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// 51 Franklin Street, Fifth Floor,
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// Boston, MA
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// 02110-1301
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// USA
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//
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////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDED_EXPRESSION
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#define INCLUDED_EXPRESSION
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#define L10N // Localization complete.
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#include <string>
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#include <stack>
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#include <Arguments.h>
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#include <Task.h>
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#include <RX.h>
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#include <Variant.h>
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class Expression
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{
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public:
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Expression (Arguments&);
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~Expression ();
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bool eval (const Task&);
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bool evalFilter (const Task&);
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std::string evalExpression (const Task&);
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void eval (const Task&, std::vector <Variant>&);
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private:
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void expand_sequence ();
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void implicit_and ();
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void expand_tag ();
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void expand_pattern ();
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void expand_attr ();
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void expand_attmod ();
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void expand_word ();
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void expand_tokens ();
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void postfix ();
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void tokenize (const std::string&, const std::string&, std::vector <std::string>&, Arguments&);
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void create_variant (Variant&, const std::string&, const std::string&);
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bool is_new_style ();
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private:
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bool eval_match (Variant&, Variant&, bool);
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private:
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Arguments _args;
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std::map <std::string, RX> _regexes;
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bool _prepared;
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};
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#endif
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////////////////////////////////////////////////////////////////////////////////
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