/*
 * 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.trace.impl;

import com.intellij.debugger.streams.trace.IntermediateState;
import com.intellij.debugger.streams.trace.TraceElement;
import org.jetbrains.annotations.NotNull;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * @author Vitaliy.Bibaev
 */
public class StateBase implements IntermediateState {
  private final List<TraceElement> myElements;

  StateBase(@NotNull List<TraceElement> elements) {
    myElements = Collections.unmodifiableList(new ArrayList<>(elements));
  }

  @NotNull
  @Override
  public List<TraceElement> getTrace() {
    return myElements;
  }
}

/*
 * 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.trace.impl;

import com.intellij.debugger.streams.trace.IntermediateState;
import com.intellij.debugger.streams.trace.TraceElement;
import org.jetbrains.annotations.NotNull;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
 * @author Vitaliy.Bibaev
 */
abstract class StateBase implements IntermediateState {
  private final List<TraceElement> myElements;

  StateBase(@NotNull List<TraceElement> elements) {
    myElements = Collections.unmodifiableList(new ArrayList<>(elements));
  }

  @NotNull
  @Override
  public List<TraceElement> getTrace() {
    return myElements;
  }
}

make class abstract