1 // Copyright 2011 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef V8_SNAPSHOT_NATIVES_H_
6 #define V8_SNAPSHOT_NATIVES_H_
7 
8 #include "src/objects.h"
9 #include "src/vector.h"
10 
11 namespace v8 { class StartupData; }  // Forward declaration.
12 
13 namespace v8 {
14 namespace internal {
15 
16 enum NativeType {
17   CORE,
18   EXPERIMENTAL,
19   EXTRAS,
20   EXPERIMENTAL_EXTRAS,
21   D8,
22   TEST
23 };
24 
25 // Extra handling for V8_EXPORT_PRIVATE in combination with USING_V8_SHARED
26 // since definition of methods of classes marked as dllimport is not allowed.
27 template <NativeType type>
28 #ifdef USING_V8_SHARED
29 class NativesCollection {
30 #else
31 class V8_EXPORT_PRIVATE NativesCollection {
32 #endif  // USING_V8_SHARED
33 
34  public:
35   // The following methods are implemented in js2c-generated code:
36 
37   // Number of built-in scripts.
38   static int GetBuiltinsCount();
39   // Number of debugger implementation scripts.
40   static int GetDebuggerCount();
41 
42   // These are used to access built-in scripts.  The debugger implementation
43   // scripts have an index in the interval [0, GetDebuggerCount()).  The
44   // non-debugger scripts have an index in the interval [GetDebuggerCount(),
45   // GetNativesCount()).
46   static int GetIndex(const char* name);
47   static Vector<const char> GetScriptSource(int index);
48   static Vector<const char> GetScriptName(int index);
49   static Vector<const char> GetScriptsSource();
50 
51   // The following methods are implemented in natives-common.cc:
52 
53   static FixedArray* GetSourceCache(Heap* heap);
54 };
55 
56 typedef NativesCollection<CORE> Natives;
57 typedef NativesCollection<EXPERIMENTAL> ExperimentalNatives;
58 typedef NativesCollection<EXTRAS> ExtraNatives;
59 typedef NativesCollection<EXPERIMENTAL_EXTRAS> ExperimentalExtraNatives;
60 
61 
62 #ifdef V8_USE_EXTERNAL_STARTUP_DATA
63 // Used for reading the natives at runtime. Implementation in natives-empty.cc
64 void SetNativesFromFile(StartupData* natives_blob);
65 void ReadNatives();
66 void DisposeNatives();
67 #endif
68 
69 }  // namespace internal
70 }  // namespace v8
71 
72 #endif  // V8_SNAPSHOT_NATIVES_H_
73