/*
 * Copyright 2000-2017 JetBrains s.r.o.
 *
 * 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 com.intellij.debugger.streams.resolve;

import org.jetbrains.annotations.NotNull;

import java.util.List;

/**
 * @author Vitaliy.Bibaev
 */
public interface ResolvedStreamChain {
  @NotNull
  ResolvedStreamCall.Producer getProducer();

  @NotNull
  ResolvedStreamCall.Terminator getTerminator();

  @NotNull
  List<ResolvedStreamCall.Intermediate> getIntermediateCalls();
}

/*
 * Copyright 2000-2017 JetBrains s.r.o.
 *
 * 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 com.intellij.debugger.streams.resolve;

import org.jetbrains.annotations.NotNull;

import java.util.List;

/**
 * @author Vitaliy.Bibaev
 */
public interface ResolvedStreamChain {
  @NotNull
  ResolvedStreamCall.Producer getProducer();

  @NotNull
  ResolvedStreamCall.Terminator getTerminator();

  @NotNull
  List<ResolvedStreamCall.Intermediate> getIntermediateCalls();

  default int length() {
    return getIntermediateCalls().size() + 2;
  }
}

Add length method into ResolvedStreamChain interface