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/**********************************************************************
** Copyright (C) 2000 Trolltech AS. All rights reserved.
**
** This file is part of Qt Designer.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file COPYING included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/
// porting for klint by Roberto Raggi (roberto@kdevelop.org)
#include "parenmatcher.h"
#include "paragdata.h"
#include <private/qrichtext_p.h>
#include <qtextedit.h>
#include <qapplication.h>
ParenMatcher::ParenMatcher()
{
enabled = TRUE;
}
bool ParenMatcher::match( QTextCursor *cursor )
{
if ( !enabled )
return FALSE;
bool ret = FALSE;
QChar c( cursor->paragraph()->at( cursor->index() )->c );
bool ok1 = FALSE;
bool ok2 = FALSE;
if ( c == '{' || c == '(' || c == '[' ) {
ok1 = checkOpenParen( cursor );
ret = ok1 || ret;
} else if ( cursor->index() > 0 ) {
c = cursor->paragraph()->at( cursor->index() - 1 )->c;
if ( c == '}' || c == ')' || c == ']' ) {
ok2 = checkClosedParen( cursor );
ret = ok2 || ret;
}
}
return ret;
}
bool ParenMatcher::checkOpenParen( QTextCursor *cursor )
{
if ( !cursor->paragraph()->extraData() )
return FALSE;
QValueList<Symbol> parenList = ( (ParagData*)cursor->paragraph()->extraData() )->symbolList();
Symbol openParen, closedParen;
QTextParagraph *closedParenParag = cursor->paragraph();
int i = 0;
int ignore = 0;
bool foundOpen = FALSE;
QChar c = cursor->paragraph()->at( cursor->index() )->c;
for (;;) {
if ( !foundOpen ) {
if ( i >= (int)parenList.count() )
goto bye;
openParen = parenList[ i ];
if ( openParen.pos() != cursor->index() ) {
++i;
continue;
} else {
foundOpen = TRUE;
++i;
}
}
if ( i >= (int)parenList.count() ) {
for (;;) {
closedParenParag = closedParenParag->next();
if ( !closedParenParag )
goto bye;
if ( closedParenParag->extraData() &&
( (ParagData*)closedParenParag->extraData() )->symbolList().count() > 0 ) {
parenList = ( (ParagData*)closedParenParag->extraData() )->symbolList();
break;
}
}
i = 0;
}
closedParen = parenList[ i ];
if ( closedParen.type() == Symbol::Left ) {
ignore++;
++i;
continue;
} else {
if ( ignore > 0 ) {
ignore--;
++i;
continue;
}
int id = Match;
if ( c == '{' && closedParen.ch() != '}' ||
c == '(' && closedParen.ch() != ')' ||
c == '[' && closedParen.ch() != ']' )
id = Mismatch;
cursor->document()->setSelectionStart( id, *cursor );
int tidx = cursor->index();
QTextParagraph *tstring = cursor->paragraph();
cursor->setParagraph( closedParenParag );
cursor->setIndex( closedParen.pos() + 1 );
cursor->document()->setSelectionEnd( id, *cursor );
cursor->setParagraph( tstring );
cursor->setIndex( tidx );
return TRUE;
}
}
bye:
return FALSE;
}
bool ParenMatcher::checkClosedParen( QTextCursor *cursor )
{
if ( !cursor->paragraph()->extraData() )
return FALSE;
QValueList<Symbol> parenList = ( (ParagData*)cursor->paragraph()->extraData() )->symbolList();
Symbol openParen, closedParen;
QTextParagraph *openParenParag = cursor->paragraph();
int i = parenList.count() - 1;
int ignore = 0;
bool foundClosed = FALSE;
QChar c = cursor->paragraph()->at( cursor->index() - 1 )->c;
for (;;) {
if ( !foundClosed ) {
if ( i < 0 )
goto bye;
closedParen = parenList[ i ];
if ( closedParen.pos() != cursor->index() - 1 ) {
--i;
continue;
} else {
foundClosed = TRUE;
--i;
}
}
if ( i < 0 ) {
for (;;) {
openParenParag = openParenParag->prev();
if ( !openParenParag )
goto bye;
if ( openParenParag->extraData() &&
( (ParagData*)openParenParag->extraData() )->symbolList().count() > 0 ) {
parenList = ( (ParagData*)openParenParag->extraData() )->symbolList();
break;
}
}
i = parenList.count() - 1;
}
openParen = parenList[ i ];
if ( openParen.type() == Symbol::Right ) {
ignore++;
--i;
continue;
} else {
if ( ignore > 0 ) {
ignore--;
--i;
continue;
}
int id = Match;
if ( c == '}' && openParen.ch() != '{' ||
c == ')' && openParen.ch() != '(' ||
c == ']' && openParen.ch() != '[' )
id = Mismatch;
cursor->document()->setSelectionStart( id, *cursor );
int tidx = cursor->index();
QTextParagraph *tstring = cursor->paragraph();
cursor->setParagraph( openParenParag );
cursor->setIndex( openParen.pos() );
cursor->document()->setSelectionEnd( id, *cursor );
cursor->setParagraph( tstring );
cursor->setIndex( tidx );
return TRUE;
}
}
bye:
return FALSE;
}
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