/*
 * 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 com.intellij.debugger.streams.trace.TraceElement;
import com.intellij.debugger.streams.trace.TraceInfo;
import org.jetbrains.annotations.NotNull;

import java.util.*;

/**
 * @author Vitaliy.Bibaev
 */
public class MapResolver implements ValuesOrderResolver {
  @NotNull
  @Override
  public Result resolve(@NotNull TraceInfo info) {
    final Map<Integer, TraceElement> before = info.getValuesOrderBefore();
    final Map<Integer, TraceElement> after = info.getValuesOrderAfter();
    assert before.size() == after.size();
    final Iterator<TraceElement> leftIterator = before.values().iterator();
    final Iterator<TraceElement> rightIterator = after.values().iterator();

    final Map<TraceElement, List<TraceElement>> forward = new LinkedHashMap<>();
    final Map<TraceElement, List<TraceElement>> backward = new LinkedHashMap<>();
    while (leftIterator.hasNext()) {
      final TraceElement left = leftIterator.next();
      final TraceElement right = rightIterator.next();

      forward.put(left, Collections.singletonList(right));
      backward.put(right, Collections.singletonList(left));
    }

    return Result.of(forward, backward);
  }
}

/*
 * 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 com.intellij.debugger.streams.trace.TraceElement;
import com.intellij.debugger.streams.trace.TraceInfo;
import org.jetbrains.annotations.NotNull;

import java.util.*;

/**
 * @author Vitaliy.Bibaev
 */
public class MapResolver implements ValuesOrderResolver {
  @NotNull
  @Override
  public Result resolve(@NotNull TraceInfo info) {
    final Map<Integer, TraceElement> before = info.getValuesOrderBefore();
    final Map<Integer, TraceElement> after = info.getValuesOrderAfter();

    final Iterator<TraceElement> leftIterator = before.values().iterator();
    final Iterator<TraceElement> rightIterator = after.values().iterator();

    final Map<TraceElement, List<TraceElement>> forward = new LinkedHashMap<>();
    final Map<TraceElement, List<TraceElement>> backward = new LinkedHashMap<>();
    while (leftIterator.hasNext() && rightIterator.hasNext()) {
      final TraceElement left = leftIterator.next();
      final TraceElement right = rightIterator.next();

      forward.put(left, Collections.singletonList(right));
      backward.put(right, Collections.singletonList(left));
    }

    while (leftIterator.hasNext()) {
      forward.put(leftIterator.next(), Collections.emptyList());
    }

    return Result.of(forward, backward);
  }
}

Fix small bug when assertion failed if exception in user code happen