plugins/org.eclipse.dltk.python.core/src/org/eclipse/dltk/python/parser/ast/expressions/IndexHolder.java

/*******************************************************************************
 * Copyright (c) 2005, 2016 IBM Corporation and others.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0.
 * 
 * SPDX-License-Identifier: EPL-2.0
 *
 *******************************************************************************/
package org.eclipse.dltk.python.parser.ast.expressions;

import org.eclipse.dltk.ast.ASTVisitor;
import org.eclipse.dltk.ast.DLTKToken;
import org.eclipse.dltk.ast.expressions.Expression;
import org.eclipse.dltk.utils.CorePrinter;

/**
 * Used to hold index expression in ExtendedVariables.
 *
 * @author haiodo
 *
 */
public class IndexHolder extends Expression {
	private Expression fIndex;

	public IndexHolder(int start, int end, Expression indexExpression) {
		super(start, end);
		this.fIndex = indexExpression;
	}

	public IndexHolder(DLTKToken dltk, DLTKToken dltk2, Expression k) {
		super(dltk.getColumn(), dltk2.getColumn() + 1);
		this.fIndex = k;
	}

	@Override
	public int getKind() {
		return Expression.E_INDEX;
	}

	@Override
	public void traverse(ASTVisitor pVisitor) throws Exception {
		if (pVisitor.visit(this)) {
			if (this.fIndex != null) {
				this.fIndex.traverse(pVisitor);
			}
			pVisitor.endvisit(this);
		}
	}

	@Override
	public void printNode(CorePrinter output) {
		output.formatPrintLn("[");
		if (this.fIndex != null) {
			this.fIndex.printNode(output);
		}
		output.formatPrintLn("]");
	}
}