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/*
* Copyright (c) 2002-2003 Jesper K. Pedersen <blackie@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License version 2 as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
**/
#include "concregexp.h"
#include "widgetfactory.h"
#include "compoundregexp.h"
ConcRegExp::ConcRegExp( bool selected ) :RegExp( selected )
{
}
void ConcRegExp::addRegExp( RegExp *regExp )
{
list.append(regExp);
addChild( regExp );
}
RegExpList ConcRegExp::children()
{
return list;
}
bool ConcRegExp::check( ErrorMap& map, bool first, bool last)
{
bool f = first;
bool possibleEmpty = true;
for ( RegExpListIt it(list); *it; ++it ) {
possibleEmpty = (*it)->check( map, f, last && it.atLast() ) && possibleEmpty;
if ( ! possibleEmpty )
f = false;
}
return possibleEmpty;
}
RegExp* ConcRegExp::lastRegExp()
{
if ( list.count() == 0)
return 0;
else
return list.at( list.count()-1);
}
QDomNode ConcRegExp::toXml( QDomDocument* doc ) const
{
QDomElement top = doc->createElement( QString::fromLocal8Bit("Concatenation") );
for ( RegExpListIt it(list); *it; ++it ) {
top.appendChild( (*it)->toXml( doc ) );
}
return top;
}
bool ConcRegExp::load( QDomElement top, const QString& version )
{
Q_ASSERT( top.tagName() == QString::fromLocal8Bit( "Concatenation" ) );
for ( QDomNode child = top.firstChild(); !child.isNull(); child = child.nextSibling() ) {
if ( ! child.isElement() )
continue; // User might have added a comment.
RegExp* regexp = WidgetFactory::createRegExp( child.toElement(), version );
if ( regexp == 0 )
return false;
addRegExp( regexp );
}
return true;
}
bool ConcRegExp::operator==( const RegExp& other ) const
{
// TODO: Merge with AltnRegExp::operator==
if ( list.count() == 1 )
return ( other == *(const_cast< QPtrList<RegExp>& >(list).at(0)) );
if ( other.type() != type() )
return false;
const ConcRegExp& theOther = dynamic_cast<const ConcRegExp&>( other );
if ( list.count() != theOther.list.count() )
return false;
RegExpListIt it1( list );
RegExpListIt it2( theOther.list );
for ( ; *it1 && *it2 ; ) {
if ( ! (**it1 == **it2) )
return false;
++it1;
++it2;
}
return true;
}
void ConcRegExp::replacePart( CompoundRegExp* replacement )
{
RegExp* otherChild = replacement->child();
ConcRegExp* otherConc = dynamic_cast<ConcRegExp*>( otherChild );
if ( ! otherConc ) {
// Watch out for garbage here!
otherConc = new ConcRegExp( false );
otherConc->addRegExp( otherChild );
}
RegExpList newList;
RegExpListIt it1( list );
while ( *it1 ) {
(*it1)->replacePart( replacement );
RegExpListIt it2 = it1;
RegExpListIt it3( otherConc->list );
bool match = true;
int count = 0;
// See if replacement is a sublist of list starting from what it1 points at
for ( ; *it2 && * it3 && match ; ) {
if (! ( **it2 == **it3 ) )
match = false;
++it2;
++it3;
++count;
}
if ( match && ! *it3) {
// I found a match, delete the element in it1, which is common with it3
while ( *it1 != *it2 ) {
RegExp* item = *it1;
++it1;
delete item;
}
RegExp* theClone = replacement->clone();
newList.append( theClone );
addChild( theClone );
}
else {
newList.append( *it1 );
++it1;
}
}
list = newList;
}
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