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68 lines
2.1 KiB
C++
68 lines
2.1 KiB
C++
/* Copyright 2010 Juan Rada-Vilela
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/*
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* File: InfixToPostfix.h
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* Author: jcrada
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*
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* Created on March 6, 2010, 1:14 AM
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*/
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#ifndef _INFIXTOPOSTFIX_H
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#define _INFIXTOPOSTFIX_H
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#include <vector>
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#include <string>
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#include <map>
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#include "flScalar.h"
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namespace fl {
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class InfixToPostfix {
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private:
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std::vector<std::string> _operators;
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protected:
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virtual std::string preprocess(const std::string& infix) const;
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public:
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InfixToPostfix();
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virtual ~InfixToPostfix();
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virtual void addOperator(const std::string& op, int precedence = 0);
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virtual std::string removeOperator(int index);
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virtual std::string getOperator(int index) const;
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virtual int operatorPrecedence(const std::string& op) const;
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virtual int numberOfOperators() const;
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virtual bool isOperator(const std::string& op) const;
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virtual bool isUnaryOperator(const std::string op) const;
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virtual bool isOperand(const std::string& op) const;
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virtual bool isNumeric(const std::string& op) const;
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virtual void loadLogicalOperators();
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virtual void loadMathOperators();
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virtual std::string transform(const std::string& infix) const;
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virtual flScalar evaluate(const std::string postfix,
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const std::map<std::string, flScalar>* variables = NULL) const;
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virtual flScalar compute(const std::string& op, flScalar a, flScalar b) const;
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static void main(int args, char** argv);
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};
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}
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#endif /* _INFIXTOPOSTFIX_H */
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