text: /****************************************************************************
  **
  ** Copyright (C) 2016 The Qt Company Ltd.
  ** Contact: https://www.qt.io/licensing/
  **
  ** This file is part of Qt Creator.
  **
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and The Qt Company. For licensing terms
  ** and conditions see https://www.qt.io/terms-conditions. For further
  ** information use the contact form at https://www.qt.io/contact-us.
  **
  ** GNU General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU
  ** General Public License version 3 as published by the Free Software
  ** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
  ** included in the packaging of this file. Please review the following
  ** information to ensure the GNU General Public License requirements will
  ** be met: https://www.gnu.org/licenses/gpl-3.0.html.
  **
  ****************************************************************************/
  
  #include "astobjecttextextractor.h"
  
  #include <qmljs/parser/qmljsast_p.h>
  
  using namespace QmlDesigner;
  
  ASTObjectTextExtractor::ASTObjectTextExtractor(const QString &text):
          m_document(QmlJS::Document::create(QLatin1String("<ASTObjectTextExtractor>"), QmlJS::Dialect::Qml))
  {
      m_document->setSource(text);
      m_document->parseQml();
  }
  
  QString ASTObjectTextExtractor::operator ()(int location)
  {
      Q_ASSERT(location >= 0);
  
      m_location = location;
      m_text.clear();
  
      QmlJS::AST::Node::accept(m_document->qmlProgram(), this);
  
      return m_text;
  }
  
  bool ASTObjectTextExtractor::visit(QmlJS::AST::UiObjectBinding *ast)
  {
      if (!m_text.isEmpty())
          return false;
  
      if (ast->qualifiedTypeNameId->identifierToken.offset == m_location)
          m_text = m_document->source().mid(m_location, ast->lastSourceLocation().end() - m_location);
  
      return m_text.isEmpty();
  }
  
  bool ASTObjectTextExtractor::visit(QmlJS::AST::UiObjectDefinition *ast)
  {
      if (!m_text.isEmpty())
          return false;
  
      if (ast->firstSourceLocation().offset == m_location)
          m_text = m_document->source().mid(m_location, ast->lastSourceLocation().end() - m_location);
  
      return m_text.isEmpty();
  }
  