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#ifndef _QMF_EXPRESSION_H_
#define _QMF_EXPRESSION_H_
/*
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
#include "qpid/types/Variant.h"
#include <string>
#include <list>
#include <boost/shared_ptr.hpp>
namespace qmf {
enum LogicalOp {
LOGICAL_ID = 1,
LOGICAL_NOT = 2,
LOGICAL_AND = 3,
LOGICAL_OR = 4
};
enum BooleanOp {
BOOL_EQ = 1,
BOOL_NE = 2,
BOOL_LT = 3,
BOOL_LE = 4,
BOOL_GT = 5,
BOOL_GE = 6,
BOOL_RE_MATCH = 7,
BOOL_EXISTS = 8,
BOOL_TRUE = 9,
BOOL_FALSE = 10
};
class Expression {
public:
Expression(const qpid::types::Variant::List& expr);
bool evaluate(const qpid::types::Variant::Map& data) const;
private:
LogicalOp logicalOp;
BooleanOp boolOp;
int operandCount;
qpid::types::Variant operands[2];
bool quoted[2];
std::list<boost::shared_ptr<Expression> > expressionList;
bool boolEval(const qpid::types::Variant::Map& data) const;
bool lessThan(const qpid::types::Variant& left, const qpid::types::Variant& right) const;
bool lessEqual(const qpid::types::Variant& left, const qpid::types::Variant& right) const;
bool greaterThan(const qpid::types::Variant& left, const qpid::types::Variant& right) const;
bool greaterEqual(const qpid::types::Variant& left, const qpid::types::Variant& right) const;
};
}
#endif
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