1 
2 /*
3  * Copyright 2011 Google Inc.
4  *
5  * Use of this source code is governed by a BSD-style license that can be
6  * found in the LICENSE file.
7  */
8 #ifndef SkScriptRuntime_DEFINED
9 #define SkScriptRuntime_DEFINED
10 
11 #include "SkOperand2.h"
12 #include "SkTDArray_Experimental.h"
13 #include "SkTDStack.h"
14 
15 class SkScriptCallBack;
16 
17 typedef SkLongArray(SkString*) SkTDStringArray;
18 typedef SkLongArray(SkScriptCallBack*) SkTDScriptCallBackArray;
19 
20 class SkScriptRuntime {
21 public:
22     enum SkError {
23         kNoError,
24         kArrayIndexOutOfBounds,
25         kCouldNotFindReferencedID,
26         kFunctionCallFailed,
27         kMemberOpFailed,
28         kPropertyOpFailed
29     };
30 
SkScriptRuntime(SkTDScriptCallBackArray & callBackArray)31     SkScriptRuntime(SkTDScriptCallBackArray& callBackArray) : fCallBackArray(callBackArray)
32         {  }
33     ~SkScriptRuntime();
34     bool executeTokens(unsigned char* opCode);
35     bool getResult(SkOperand2* result);
36     void untrack(SkOpArray* array);
37     void untrack(SkString* string);
38 private:
39     void track(SkOpArray* array);
40     void track(SkString* string);
41     SkTDScriptCallBackArray& fCallBackArray;
42     SkError fError;
43     SkTDStack<SkOperand2> fRunStack;
44     SkLongArray(SkOpArray*) fTrackArray;
45     SkTDStringArray fTrackString;
46     // illegal
47     SkScriptRuntime& operator=(const SkScriptRuntime&);
48 };
49 
50 #endif // SkScriptRuntime_DEFINED
51