mirror of https://github.com/Icinga/icinga2.git
103 lines
3.2 KiB
C++
103 lines
3.2 KiB
C++
/******************************************************************************
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* Icinga 2 *
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* Copyright (C) 2012 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 "i2-config.h"
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using namespace icinga;
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Expression::Expression(const String& key, ExpressionOperator op, const Value& value, const DebugInfo& debuginfo)
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: m_Key(key), m_Operator(op), m_Value(value), m_DebugInfo(debuginfo)
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{
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}
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void Expression::Execute(const Dictionary::Ptr& dictionary) const
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{
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Value oldValue, newValue;
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ExpressionList::Ptr valueExprl;
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Dictionary::Ptr valueDict;
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if (m_Value.IsObjectType<ExpressionList>())
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valueExprl = m_Value;
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if (m_Value.IsObjectType<Dictionary>())
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valueDict = m_Value;
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newValue = m_Value;
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Dictionary::Ptr dict;
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switch (m_Operator) {
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case OperatorExecute:
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if (!valueExprl)
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throw_exception(invalid_argument("Operand for OperatorExecute must be an ExpressionList."));
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valueExprl->Execute(dictionary);
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return;
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case OperatorSet:
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if (valueExprl) {
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dict = boost::make_shared<Dictionary>();
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valueExprl->Execute(dict);
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newValue = dict;
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}
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break;
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case OperatorPlus:
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oldValue = dictionary->Get(m_Key);
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if (oldValue.IsObjectType<Dictionary>())
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dict = oldValue;
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if (!dict) {
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if (!oldValue.IsEmpty()) {
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stringstream message;
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message << "Wrong argument types for += (non-dictionary and dictionary) (" << m_DebugInfo << ")";
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throw_exception(domain_error(message.str()));
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}
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dict = boost::make_shared<Dictionary>();
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}
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newValue = dict;
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if (valueExprl) {
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valueExprl->Execute(dict);
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} else if (valueDict) {
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String key;
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Value value;
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BOOST_FOREACH(tie(key, value), valueDict) {
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dict->Set(key, value);
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}
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} else {
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stringstream message;
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message << "+= only works for dictionaries (" << m_DebugInfo << ")";
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throw_exception(domain_error(message.str()));
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}
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break;
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default:
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throw_exception(runtime_error("Not yet implemented."));
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}
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dictionary->Set(m_Key, newValue);
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}
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