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83 lines
2.5 KiB
83 lines
2.5 KiB
/*
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* BinaryRelationExpression.h
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*
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* Created on: 03.01.2013
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* Author: chris
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*/
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#ifndef BINARYRELATIONEXPRESSION_H_
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#define BINARYRELATIONEXPRESSION_H_
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#include "src/ir/expressions/BinaryExpression.h"
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namespace storm {
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namespace ir {
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namespace expressions {
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class BinaryRelationExpression : public BinaryExpression {
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public:
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enum RelationType {EQUAL, NOT_EQUAL, LESS, LESS_OR_EQUAL, GREATER, GREATER_OR_EQUAL};
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BinaryRelationExpression(std::shared_ptr<BaseExpression> left, std::shared_ptr<BaseExpression> right, RelationType relationType) : BinaryExpression(bool_, left, right), relationType(relationType) {
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}
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virtual ~BinaryRelationExpression() {
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}
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virtual std::shared_ptr<BaseExpression> clone(const std::map<std::string, std::string>& renaming, const std::map<std::string, uint_fast64_t>& bools, const std::map<std::string, uint_fast64_t>& ints) {
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return std::shared_ptr<BaseExpression>(new BinaryRelationExpression(this->getLeft()->clone(renaming, bools, ints), this->getRight()->clone(renaming, bools, ints), this->relationType));
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}
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virtual bool getValueAsBool(std::pair<std::vector<bool>, std::vector<int_fast64_t>> const* variableValues) const {
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int_fast64_t resultLeft = this->getLeft()->getValueAsInt(variableValues);
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int_fast64_t resultRight = this->getRight()->getValueAsInt(variableValues);
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switch(relationType) {
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case EQUAL: return resultLeft == resultRight; break;
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case NOT_EQUAL: return resultLeft != resultRight; break;
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case LESS: return resultLeft < resultRight; break;
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case LESS_OR_EQUAL: return resultLeft <= resultRight; break;
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case GREATER: return resultLeft > resultRight; break;
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case GREATER_OR_EQUAL: return resultLeft >= resultRight; break;
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default: throw storm::exceptions::ExpressionEvaluationException() << "Cannot evaluate expression: "
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<< "Unknown boolean binary relation: '" << relationType << "'.";
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}
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}
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RelationType getRelationType() const {
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return relationType;
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}
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virtual void accept(ExpressionVisitor* visitor) {
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visitor->visit(this);
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}
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virtual std::string toString() const {
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std::string result = this->getLeft()->toString();
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switch (relationType) {
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case EQUAL: result += " = "; break;
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case NOT_EQUAL: result += " != "; break;
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case LESS: result += " < "; break;
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case LESS_OR_EQUAL: result += " <= "; break;
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case GREATER: result += " > "; break;
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case GREATER_OR_EQUAL: result += " >= "; break;
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}
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result += this->getRight()->toString();
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return result;
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}
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private:
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RelationType relationType;
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};
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}
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}
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}
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#endif /* BINARYRELATIONEXPRESSION_H_ */
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