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/*
 * Copyright 2015 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.rio.core.main;

import br.com.objectos.way.core.team.CodeReview;

import com.google.common.base.Optional;

/**
 * @author [email protected] (Marcio Endo)
 */
class VariableReferenceParser extends ForwardingExpressionParser {

  private final ScriptRio rio;
  private final String name;

  public VariableReferenceParser(ReferenceParser referenceParser, ScriptRio rio, String name) {
    super(referenceParser);
    this.rio = rio;
    this.name = name;
  }

  @Override
  public void exitExpression() {
    super.exitExpression();

    Optional maybeLast = rio.popExpression();
    @CodeReview("Optional.get safe because of super.exitExpression()")
    Expression expression = maybeLast.get();
    MethodInvocation methodInvocation = MethodInvocation.class.cast(expression);

    VariableMethodInvocation variable = VariableMethodInvocation.builder()
        .type(methodInvocation.getReturnType())
        .name(name)
        .methodInvocation(methodInvocation)
        .build();
    rio.add(variable);
  }

}