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      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