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/*
 * Licensed to Laurent Broudoux (the "Author") under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Author licenses this
 * file to you 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 io.github.microcks.util.el;

import io.github.microcks.util.el.function.ELFunction;
/**
 * An implementation of {@code Expression} that invokes an {@code ELFunction}
 * @author laurent
 */
public class FunctionExpression implements Expression {

   private final ELFunction function;
   private final String[] functionArgs;

   /**
    * Build a new function expression with a function and its invocation arguments.
    * @param function The ELFunction associated to this expression
    * @param functionArgs The invocation arguments of this function
    */
   public FunctionExpression(ELFunction function, String[] functionArgs) {
      this.function = function;
      this.functionArgs = functionArgs;
   }

   @Override
   public String getValue(EvaluationContext context) {
      return function.evaluate(context, functionArgs);
   }
}