1  /*
 2   * Copyright (C) 2018 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  #pragma once
27  
28  #include "CodeOrigin.h"
29  
30  namespace JSC {
31  
32  struct InlineCallFrame;
33  
34  struct TerminatedCodeOrigin {
35      TerminatedCodeOrigin() { }
36      
37      TerminatedCodeOrigin(const CodeOrigin& codeOrigin, InlineCallFrame* terminal)
38          : codeOrigin(codeOrigin)
39          , terminal(terminal)
40      {
41      }
42      
43      CodeOrigin codeOrigin;
44      InlineCallFrame* terminal { nullptr };
45  };
46  
47  struct TerminatedCodeOriginHashTranslator {
48      static unsigned hash(const TerminatedCodeOrigin& value)
49      {
50          return value.codeOrigin.approximateHash(value.terminal);
51      }
52      
53      static bool equal(const CodeOrigin& a, const TerminatedCodeOrigin& b)
54      {
55          return b.codeOrigin.isApproximatelyEqualTo(a, b.terminal);
56      }
57  };
58  
59  } // namespace JSC
60