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Diffstat (limited to 'tools/designer/editor/parenmatcher.cpp')
| -rw-r--r-- | tools/designer/editor/parenmatcher.cpp | 215 |
1 files changed, 215 insertions, 0 deletions
diff --git a/tools/designer/editor/parenmatcher.cpp b/tools/designer/editor/parenmatcher.cpp new file mode 100644 index 000000000..5b16658db --- /dev/null +++ b/tools/designer/editor/parenmatcher.cpp @@ -0,0 +1,215 @@ +/********************************************************************** +** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved. +** +** This file is part of TQt Designer. +** +** This file may be used under the terms of the GNU General +** Public License versions 2.0 or 3.0 as published by the Free +** Software Foundation and appearing in the files LICENSE.GPL2 +** and LICENSE.GPL3 included in the packaging of this file. +** Alternatively you may (at your option) use any later version +** of the GNU General Public License if such license has been +** publicly approved by Trolltech ASA (or its successors, if any) +** and the KDE Free TQt Foundation. +** +** Please review the following information to ensure GNU General +** Public Licensing retquirements will be met: +** http://trolltech.com/products/qt/licenses/licensing/opensource/. +** If you are unsure which license is appropriate for your use, please +** review the following information: +** http://trolltech.com/products/qt/licenses/licensing/licensingoverview +** or contact the sales department at sales@trolltech.com. +** +** Licensees holding valid TQt Commercial licenses may use this file in +** accordance with the TQt Commercial License Agreement provided with +** the Software. +** +** This file is provided "AS IS" with NO WARRANTY OF ANY KIND, +** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE. Trolltech reserves all rights not granted +** herein. +** +**********************************************************************/ + +#include "parenmatcher.h" +#include "paragdata.h" + +#include "qtextedit.h" +#include <private/qrichtext_p.h> +#include <qapplication.h> + +ParenMatcher::ParenMatcher() +{ + enabled = TRUE; +} + +bool ParenMatcher::match( TQTextCursor *cursor ) +{ + if ( !enabled ) + return FALSE; + bool ret = FALSE; + + TQChar 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( TQTextCursor *cursor ) +{ + if ( !cursor->paragraph()->extraData() ) + return FALSE; + ParenList parenList = ( (ParagData*)cursor->paragraph()->extraData() )->parenList; + + Paren openParen, closedParen; + TQTextParagraph *closedParenParag = cursor->paragraph(); + + int i = 0; + int ignore = 0; + bool foundOpen = FALSE; + TQChar 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() )->parenList.count() > 0 ) { + parenList = ( (ParagData*)closedParenParag->extraData() )->parenList; + break; + } + } + i = 0; + } + + closedParen = parenList[ i ]; + if ( closedParen.type == Paren::Open ) { + ignore++; + ++i; + continue; + } else { + if ( ignore > 0 ) { + ignore--; + ++i; + continue; + } + + int id = Match; + if ( c == '{' && closedParen.chr != '}' || + c == '(' && closedParen.chr != ')' || + c == '[' && closedParen.chr != ']' ) + id = Mismatch; + cursor->document()->setSelectionStart( id, *cursor ); + int tidx = cursor->index(); + TQTextParagraph *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( TQTextCursor *cursor ) +{ + if ( !cursor->paragraph()->extraData() ) + return FALSE; + ParenList parenList = ( (ParagData*)cursor->paragraph()->extraData() )->parenList; + + Paren openParen, closedParen; + TQTextParagraph *openParenParag = cursor->paragraph(); + + int i = (int)parenList.count() - 1; + int ignore = 0; + bool foundClosed = FALSE; + TQChar 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() )->parenList.count() > 0 ) { + parenList = ( (ParagData*)openParenParag->extraData() )->parenList; + break; + } + } + i = (int)parenList.count() - 1; + } + + openParen = parenList[ i ]; + if ( openParen.type == Paren::Closed ) { + ignore++; + --i; + continue; + } else { + if ( ignore > 0 ) { + ignore--; + --i; + continue; + } + + int id = Match; + if ( c == '}' && openParen.chr != '{' || + c == ')' && openParen.chr != '(' || + c == ']' && openParen.chr != '[' ) + id = Mismatch; + cursor->document()->setSelectionStart( id, *cursor ); + int tidx = cursor->index(); + TQTextParagraph *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; +} |