Line data    Source code

       1             : // Copyright (C) 2013 The Android Open Source Project
       2             : //
       3             : // Licensed under the Apache License, Version 2.0 (the "License");
       4             : // you may not use this file except in compliance with the License.
       5             : // You may obtain a copy of the License at
       6             : //
       7             : // http://www.apache.org/licenses/LICENSE-2.0
       8             : //
       9             : // Unless required by applicable law or agreed to in writing, software
      10             : // distributed under the License is distributed on an "AS IS" BASIS,
      11             : // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
      12             : // See the License for the specific language governing permissions and
      13             : // limitations under the License.
      14             : 
      15             : package com.google.gerrit.extensions.client;
      16             : 
      17             : /** Operation performed by a change relative to its parent. */
      18         153 : public enum ChangeKind {
      19             :   /** Nontrivial content changes. */
      20         153 :   REWORK,
      21             : 
      22             :   /** Conflict-free merge between the new parent and the prior patch set. */
      23         153 :   TRIVIAL_REBASE,
      24             : 
      25             :   /** Conflict-free change of first (left) parent of a merge commit. */
      26         153 :   MERGE_FIRST_PARENT_UPDATE,
      27             : 
      28             :   /** Same tree and same parent tree. */
      29         153 :   NO_CODE_CHANGE,
      30             : 
      31             :   /** Same tree, parent tree, same commit message. */
      32         153 :   NO_CHANGE;
      33             : 
      34             :   public boolean matches(ChangeKind changeKind, boolean isMerge) {
      35          12 :     switch (changeKind) {
      36             :       case REWORK:
      37             :         // REWORK inlcudes all other change kinds, since those are just more trivial cases of a
      38             :         // rework
      39           2 :         return true;
      40             :       case TRIVIAL_REBASE:
      41          11 :         return isTrivialRebase();
      42             :       case MERGE_FIRST_PARENT_UPDATE:
      43           1 :         return isMergeFirstParentUpdate(isMerge);
      44             :       case NO_CHANGE:
      45          11 :         return this == NO_CHANGE;
      46             :       case NO_CODE_CHANGE:
      47           3 :         return isNoCodeChange();
      48             :     }
      49           0 :     throw new IllegalStateException("unexpected change kind: " + changeKind);
      50             :   }
      51             : 
      52             :   public boolean isNoCodeChange() {
      53             :     // NO_CHANGE is a more trivial case of NO_CODE_CHANGE and hence matched as well
      54           3 :     return this == NO_CHANGE || this == NO_CODE_CHANGE;
      55             :   }
      56             : 
      57             :   public boolean isTrivialRebase() {
      58             :     // NO_CHANGE is a more trivial case of TRIVIAL_REBASE and hence matched as well
      59          50 :     return this == NO_CHANGE || this == TRIVIAL_REBASE;
      60             :   }
      61             : 
      62             :   public boolean isMergeFirstParentUpdate(boolean isMerge) {
      63           1 :     if (!isMerge) {
      64           1 :       return false;
      65             :     }
      66             : 
      67             :     // NO_CHANGE is a more trivial case of MERGE_FIRST_PARENT_UPDATE and hence matched as well
      68           1 :     return this == NO_CHANGE || this == MERGE_FIRST_PARENT_UPDATE;
      69             :   }
      70             : }