bundles/org.eclipse.rap.themeeditor/src/org/eclipse/rap/themeeditor/editor/source/region/CommentRegion.java

/*******************************************************************************
 * Copyright (c) 2008 Mathias Schaeffner and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Mathias Schaeffner - initial API and implementation
 *******************************************************************************/
package org.eclipse.rap.themeeditor.editor.source.region;

import org.eclipse.rap.themeeditor.SupportedKeywords;
import org.eclipse.rap.themeeditor.editor.source.CSSTokenProvider;

/**
 * A region in the text file representing a comment section.
 */
public class CommentRegion extends AbstractRegion {

  private IRegionExt lastState;

  public CommentRegion( final int offset, final IRegionExt lastState ) {
    super( offset - 1 );
    length = 1;
    this.lastState = lastState;
  }

  public IRegionExt getNextState( final char character ) {
    IRegionExt result = this;
    if( character == '/' && lastCharacter == '*' ) {
      length++;
      result = lastState.getCopy( offset + length );
      length++;
    }
    lastCharacter = character;
    length++;
    return result;
  }

  public int getTokenType() {
    return CSSTokenProvider.COMMENT_TOKEN;
  }

  /* never called */
  public IRegionExt getCopy( final int offset ) {
    return null;
  }

  public int getKeywordType() {
    return SupportedKeywords.UNDEFINED;
  }
}