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//=============================================================================
//
// File : kvi_kvs_treenode_arrayelement.cpp
// Creation date : Tue 07 Oct 2003 02:58:41 by Szymon Stefanek
//
// This file is part of the KVIrc IRC client distribution
// Copyright (C) 2003-2010 Szymon Stefanek <pragma at kvirc dot net>
//
// This program is FREE software. You can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your opinion) any later version.
//
// This program is distributed in the HOPE that it will be USEFUL,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
// See the GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, write to the Free Software Foundation,
// Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
//=============================================================================
#include "kvi_kvs_treenode_arrayelement.h"
#include "kvi_kvs_runtimecontext.h"
#include "KviLocale.h"
#include "kvi_kvs_array.h"
#include "kvi_kvs_object.h"
KviKvsTreeNodeArrayElement::KviKvsTreeNodeArrayElement(const QChar * pLocation, KviKvsTreeNodeData * pSource, KviKvsTreeNodeExpression * pIndex)
: KviKvsTreeNodeArrayOrHashElement(pLocation,pSource)
{
m_pIndex = pIndex;
m_pIndex->setParent(this);
}
KviKvsTreeNodeArrayElement::~KviKvsTreeNodeArrayElement()
{
delete m_pIndex;
}
void KviKvsTreeNodeArrayElement::contextDescription(QString & szBuffer)
{
szBuffer = "Array Element Evaluation";
}
void KviKvsTreeNodeArrayElement::dump(const char * prefix)
{
qDebug("%s ArrayElement",prefix);
QString szTmp = prefix;
szTmp.append(" ");
m_pSource->dump(szTmp.toUtf8().data());
m_pIndex->dump(szTmp.toUtf8().data());
}
bool KviKvsTreeNodeArrayElement::evaluateIndex(KviKvsRunTimeContext * c, kvs_int_t & iVal)
{
KviKvsVariant idx;
if(!m_pIndex->evaluateReadOnly(c,&idx))
return false;
if(!idx.asInteger(iVal))
{
c->error(this,__tr2qs_ctx("Array index didn't evaluate to an integer","kvs"));
return false;
}
if(iVal < 0)
{
c->error(this,__tr2qs_ctx("Array index evaluated to a negative integer (non negative integer expected)","kvs"));
return false;
}
return true;
}
bool KviKvsTreeNodeArrayElement::evaluateReadOnlyInObjectScope(KviKvsObject * o, KviKvsRunTimeContext * c, KviKvsVariant * pBuffer)
{
kvs_int_t iVal;
if(!evaluateIndex(c,iVal))
return false;
KviKvsVariant val;
if(o)
{
if(!m_pSource->evaluateReadOnlyInObjectScope(o,c,&val))
return false;
} else {
if(!m_pSource->evaluateReadOnly(c,&val))
return false;
}
if(!val.isArray())
{
if(!val.isNothing())
{
QString szType;
val.getTypeName(szType);
c->warning(this,__tr2qs_ctx("The argument of the [] subscript didn't evaluate to an array: automatic conversion from %Q supplied","kvs"),&szType);
}
pBuffer->setNothing();
return true;
}
KviKvsVariant * v = val.array()->at(iVal);
if(!v)
{
pBuffer->setNothing();
return true;
}
pBuffer->copyFrom(v);
return true;
}
KviKvsRWEvaluationResult * KviKvsTreeNodeArrayElement::evaluateReadWriteInObjectScope(KviKvsObject * o, KviKvsRunTimeContext * c)
{
kvs_int_t iVal;
if(!evaluateIndex(c,iVal))
return false;
KviKvsRWEvaluationResult * result;
if(o)
result = m_pSource->evaluateReadWriteInObjectScope(o,c);
else result = m_pSource->evaluateReadWrite(c);
if(!result)
return 0;
if(!result->result()->isArray())
{
// convert to hash in some way
if(!result->result()->isNothing())
{
QString szType;
result->result()->getTypeName(szType);
c->warning(this,__tr2qs_ctx("The argument of the [] subscript didn't evaluate to an array: automatic conversion from type '%Q' supplied","kvs"),&szType);
}
result->result()->setArray(new KviKvsArray());
}
return new KviKvsArrayElement(result,result->result()->array()->getAt(iVal),result->result()->array(),iVal);
}
bool KviKvsTreeNodeArrayElement::evaluateReadOnly(KviKvsRunTimeContext * c, KviKvsVariant * pBuffer)
{
return evaluateReadOnlyInObjectScope(0,c,pBuffer);
}
KviKvsRWEvaluationResult * KviKvsTreeNodeArrayElement::evaluateReadWrite(KviKvsRunTimeContext * c)
{
return evaluateReadWriteInObjectScope(0,c);
}
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