/*
 * 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<AstNode> nodes;

    public AstParameters(List<AstNode> 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(")");
    }

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

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