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/*
 * Based on JUEL 2.2.1 code, 2006-2009 Odysseus Software GmbH
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.activiti.engine.impl.juel;

import org.activiti.engine.impl.javax.el.ELContext;
import org.activiti.engine.impl.javax.el.ELException;

public class AstBracket extends AstProperty {
  protected final AstNode property;

  public AstBracket(AstNode base, AstNode property, boolean lvalue, boolean strict) {
    super(base, lvalue, strict);
    this.property = property;
  }

  @Override
  protected Object getProperty(Bindings bindings, ELContext context) throws ELException {
    return property.eval(bindings, context);
  }

  @Override
  public String toString() {
    return "[...]";
  }

  @Override
  public void appendStructure(StringBuilder b, Bindings bindings) {
    getChild(0).appendStructure(b, bindings);
    b.append("[");
    getChild(1).appendStructure(b, bindings);
    b.append("]");
  }

  public int getCardinality() {
    return 2;
  }

  @Override
  public AstNode getChild(int i) {
    return i == 1 ? property : super.getChild(i);
  }
}