1  /*
 2   * Copyright (C) 2014 Apple Inc. All rights reserved.
 3   *
 4   * Redistribution and use in source and binary forms, with or without
 5   * modification, are permitted provided that the following conditions
 6   * are met:
 7   * 1. Redistributions of source code must retain the above copyright
 8   *    notice, this list of conditions and the following disclaimer.
 9   * 2. Redistributions in binary form must reproduce the above copyright
10   *    notice, this list of conditions and the following disclaimer in the
11   *    documentation and/or other materials provided with the distribution.
12   *
13   * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14   * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17   * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18   * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19   * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20   * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21   * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
24   */
25  
26  #include "config.h"
27  #include "ToThisStatus.h"
28  
29  namespace JSC {
30  
31  ToThisStatus merge(ToThisStatus a, ToThisStatus b)
32  {
33      switch (a) {
34      case ToThisOK:
35          return b;
36      case ToThisConflicted:
37          return ToThisConflicted;
38      case ToThisClearedByGC:
39          if (b == ToThisConflicted)
40              return ToThisConflicted;
41          return ToThisClearedByGC;
42      }
43      
44      RELEASE_ASSERT_NOT_REACHED();
45      return ToThisConflicted;
46  }
47  
48  } // namespace JSC
49  
50  namespace WTF {
51  
52  using namespace JSC;
53  
54  void printInternal(PrintStream& out, ToThisStatus status)
55  {
56      switch (status) {
57      case ToThisOK:
58          out.print("OK");
59          return;
60      case ToThisConflicted:
61          out.print("Conflicted");
62          return;
63      case ToThisClearedByGC:
64          out.print("ClearedByGC");
65          return;
66      }
67      
68      RELEASE_ASSERT_NOT_REACHED();
69  }
70  
71  } // namespace WTF
72