// Copyright (c) 2010 The Chromium Authors. All rights reserved.

// Use of this source code is governed by a BSD-style license that can be

// found in the LICENSE file.

package org.chromium.debug.core.model;

import java.util.HashMap;

import java.util.Map;

import org.chromium.sdk.Breakpoint;

/**

 * TODO(peter.rybin): this class is obsolete, it only holds useful inner class;

 * consider removing this class.

 */

public class BreakpointMap {

  /**

   * A one-to-one map between SDK and UI breakpoints inside one debug target.

   */

  public static class InTargetMap {

    private final Map<Breakpoint, ChromiumLineBreakpoint> sdkToUiMap =

        new HashMap<Breakpoint, ChromiumLineBreakpoint>();

    private final Map<ChromiumLineBreakpoint, Breakpoint> uiToSdkMap =

      new HashMap<ChromiumLineBreakpoint, Breakpoint>();

    public InTargetMap() {

    }

    public synchronized Breakpoint getSdkBreakpoint(ChromiumLineBreakpoint chromiumLineBreakpoint) {

      return uiToSdkMap.get(chromiumLineBreakpoint);

    }

    public synchronized ChromiumLineBreakpoint getUiBreakpoint(Breakpoint sdkBreakpoint) {

      return sdkToUiMap.get(sdkBreakpoint);

    }

    public synchronized void add(Breakpoint sdkBreakpoint, ChromiumLineBreakpoint uiBreakpoint) {

      Object conflict1 = uiToSdkMap.put(uiBreakpoint, sdkBreakpoint);

      Object conflict2 = sdkToUiMap.put(sdkBreakpoint, uiBreakpoint);

      if (conflict1 != null || conflict2 != null) {

        throw new RuntimeException();

      }

    }

    public synchronized void remove(ChromiumLineBreakpoint lineBreakpoint) {

      Breakpoint sdkBreakpoint = uiToSdkMap.remove(lineBreakpoint);

      if (sdkBreakpoint == null) {

        throw new RuntimeException();

      }

      sdkToUiMap.remove(sdkBreakpoint);

    }

    public synchronized void clear() {

      sdkToUiMap.clear();

      uiToSdkMap.clear();

    }

  }

}