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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 java.util.List;

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

public class AstParameters extends AstRightValue {
  private final List nodes;

  public AstParameters(List nodes) {
    this.nodes = nodes;
  }

  @Override
  public Object[] eval(Bindings bindings, ELContext context) {
    Object[] result = new Object[nodes.size()];
    for (int i = 0; i < nodes.size(); i++) {
      result[i] = nodes.get(i).eval(bindings, context);
    }
    return result;
  }

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

  @Override
  public void appendStructure(StringBuilder builder, Bindings bindings) {
    builder.append("(");
    for (int i = 0; i < nodes.size(); i++) {
      if (i > 0) {
        builder.append(", ");
      }
      nodes.get(i).appendStructure(builder, bindings);
    }
    builder.append(")");
  }

  public int getCardinality() {
    return nodes.size();
  }

  public AstNode getChild(int i) {
    return nodes.get(i);
  }
}