mirror of https://github.com/Icinga/icinga2.git
73 lines
2.8 KiB
C++
73 lines
2.8 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012-2013 Icinga Development Team (http://www.icinga.org/) *
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* *
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* This program is free software; you can redistribute it and/or *
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* modify it under the terms of the GNU General Public License *
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* as published by the Free Software Foundation; either version 2 *
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* of the License, or (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software Foundation *
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
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******************************************************************************/
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#include "config/aexpression.h"
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using namespace icinga;
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AExpression::AExpression(AOperator op, const AValue& operand1)
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: m_Operator(op), m_Operand1(operand1)
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{
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ASSERT(op == AEReturn);
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}
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AExpression::AExpression(AOperator op, const AValue& operand1, const AValue& operand2)
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: m_Operator(op), m_Operand1(operand1), m_Operand2(operand2)
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{
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ASSERT(op == AEAdd || op == AENegate || op == AESubtract || op == AEMultiply || op == AEDivide ||
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op == AEBinaryAnd || op == AEBinaryOr || op == AEShiftLeft || op == AEShiftRight);
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}
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Value AExpression::Evaluate(const Object::Ptr& thisRef) const
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{
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Value left, right;
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left = m_Operand1.Evaluate(thisRef);
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right = m_Operand2.Evaluate(thisRef);
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switch (m_Operator) {
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case AEReturn:
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return left;
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case AENegate:
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return ~(long)left;
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case AEAdd:
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if (left.GetType() == ValueString || right.GetType() == ValueString)
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return (String)left + (String)right;
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else
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return (double)left + (double)right;
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case AESubtract:
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return (double)left + (double)right;
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case AEMultiply:
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return (double)left * (double)right;
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case AEDivide:
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return (double)left / (double)right;
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case AEBinaryAnd:
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return (long)left & (long)right;
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case AEBinaryOr:
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return (long)left | (long)right;
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case AEShiftLeft:
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return (long)left << (long)right;
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case AEShiftRight:
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return (long)left >> (long)right;
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default:
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ASSERT(!"Invalid operator.");
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}
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}
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