content: package net.sf.expectit.interact;
  
  /*
   * #%L
   * ExpectIt
   * %%
   * Copyright (C) 2014 - 2015 Alexey Gavrilov and contributors
   * %%
   * 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.
   * #L%
   */
  
  import java.io.IOException;
  import net.sf.expectit.Result;
  import net.sf.expectit.matcher.Matcher;
  
  /**
   * The interactive loop builder.
   */
  public interface InteractBuilder {
      /**
       * Sets the matching predicate for the action condition.
       *
       * @param matcher the matcher.
       * @param <R> the result type.
       * @return the ongoing result builder.
       */
      <R extends Result> OngoingResult<R> when(Matcher<R> matcher);
  
      /**
       * Enters the interact loop and sets the matching predicate for the exit condition.
       * If the exit condition is not satisfied, and no 'when' conditions match the method returns.
       *
       * @param matcher the matcher.
       * @param <R> the result type.
       * @return the matching result of the until expression.
       * @throws IOException if I/O error occurs during matching.
       */
      <R extends Result> R until(Matcher<R> matcher) throws IOException;
  }
  