org.eclipse.jdt.core.dom.ASTNode#ENHANCED_FOR_STATEMENT源码实例Demo

@Override
public boolean preNext(Statement curElement) {
	switch (curElement.getNodeType()) {
	case ASTNode.WHILE_STATEMENT:
		exportWhile((WhileStatement) curElement);
		break;
	case ASTNode.FOR_STATEMENT:
		exportFor((ForStatement) curElement);
		break;
	case ASTNode.ENHANCED_FOR_STATEMENT:
		exportForEach((EnhancedForStatement) curElement);
		break;
	case ASTNode.DO_STATEMENT:
		exportDoWhileStatement((DoStatement) curElement);
		break;
	}

	return true;
}
 

/**
 * Creates the appropriate exporter implementation based on the type of the
 * given node.
 * 
 * @param <T>
 *            The node type which is parsed by the exporter.
 */
@SuppressWarnings("unchecked")
public static <T extends ASTNode> ExporterBase<T> createExporter(T curElement, PlantUmlCompiler compiler) {
	switch (curElement.getNodeType()) {
	case ASTNode.TYPE_DECLARATION:
		return (ExporterBase<T>) new InteractionExporter(compiler);
	case ASTNode.METHOD_INVOCATION:
		return (ExporterBase<T>) MethodInvocationExporter.createExporter(curElement, compiler);
	case ASTNode.WHILE_STATEMENT:
	case ASTNode.FOR_STATEMENT:
	case ASTNode.ENHANCED_FOR_STATEMENT:
	case ASTNode.DO_STATEMENT:
		return (ExporterBase<T>) new LoopFragmentExporter(compiler);
	case ASTNode.IF_STATEMENT:
		return (ExporterBase<T>) new OptAltFragmentExporter(compiler);
	}
	return null;
}
 

@Override
public boolean validElement(ASTNode curElement) {
	int nodeType = curElement.getNodeType();
	return nodeType == ASTNode.DO_STATEMENT || nodeType == ASTNode.ENHANCED_FOR_STATEMENT
			|| nodeType == ASTNode.WHILE_STATEMENT || nodeType == ASTNode.FOR_STATEMENT
			|| nodeType == ASTNode.IF_STATEMENT || nodeType == ASTNode.METHOD_INVOCATION;
}
 

private static boolean isControlStatementWithBlock(ASTNode node) {
	switch (node.getNodeType()) {
		case ASTNode.IF_STATEMENT:
		case ASTNode.WHILE_STATEMENT:
		case ASTNode.FOR_STATEMENT:
		case ASTNode.ENHANCED_FOR_STATEMENT:
		case ASTNode.DO_STATEMENT:
			return true;
		default:
			return false;
	}
}
 

private Statement convertStatement(org.eclipse.jdt.core.dom.Statement statement) {
  switch (statement.getNodeType()) {
    case ASTNode.ASSERT_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.AssertStatement) statement);
    case ASTNode.BLOCK:
      return convert((org.eclipse.jdt.core.dom.Block) statement);
    case ASTNode.BREAK_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.BreakStatement) statement);
    case ASTNode.CONSTRUCTOR_INVOCATION:
      return convert((org.eclipse.jdt.core.dom.ConstructorInvocation) statement);
    case ASTNode.CONTINUE_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.ContinueStatement) statement);
    case ASTNode.DO_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.DoStatement) statement);
    case ASTNode.EMPTY_STATEMENT:
      return new EmptyStatement(getSourcePosition(statement));
    case ASTNode.EXPRESSION_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.ExpressionStatement) statement);
    case ASTNode.FOR_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.ForStatement) statement);
    case ASTNode.ENHANCED_FOR_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.EnhancedForStatement) statement);
    case ASTNode.IF_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.IfStatement) statement);
    case ASTNode.LABELED_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.LabeledStatement) statement);
    case ASTNode.RETURN_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.ReturnStatement) statement);
    case ASTNode.SUPER_CONSTRUCTOR_INVOCATION:
      return convert((org.eclipse.jdt.core.dom.SuperConstructorInvocation) statement);
    case ASTNode.SWITCH_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.SwitchStatement) statement);
    case ASTNode.SYNCHRONIZED_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.SynchronizedStatement) statement);
    case ASTNode.THROW_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.ThrowStatement) statement);
    case ASTNode.TRY_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.TryStatement) statement);
    case ASTNode.TYPE_DECLARATION_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.TypeDeclarationStatement) statement);
    case ASTNode.VARIABLE_DECLARATION_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.VariableDeclarationStatement) statement);
    case ASTNode.WHILE_STATEMENT:
      return convert((org.eclipse.jdt.core.dom.WhileStatement) statement);
    default:
      throw internalCompilerError(
          "Unexpected type for Statement: %s", statement.getClass().getName());
  }
}
 

private boolean isControlStatement(ASTNode node) {
	int type= node.getNodeType();
	return type == ASTNode.IF_STATEMENT || type == ASTNode.FOR_STATEMENT || type == ASTNode.ENHANCED_FOR_STATEMENT ||
	        type == ASTNode.WHILE_STATEMENT || type == ASTNode.DO_STATEMENT;
}