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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 the V8 project authors. All rights reserved. |
2 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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3032 | 3032 |
3033 // This object provides quick access to scope info details for runtime | 3033 // This object provides quick access to scope info details for runtime |
3034 // routines w/o the need to explicitly create a ScopeInfo object. | 3034 // routines w/o the need to explicitly create a ScopeInfo object. |
3035 class SerializedScopeInfo : public FixedArray { | 3035 class SerializedScopeInfo : public FixedArray { |
3036 public : | 3036 public : |
3037 static SerializedScopeInfo* cast(Object* object) { | 3037 static SerializedScopeInfo* cast(Object* object) { |
3038 ASSERT(object->IsSerializedScopeInfo()); | 3038 ASSERT(object->IsSerializedScopeInfo()); |
3039 return reinterpret_cast<SerializedScopeInfo*>(object); | 3039 return reinterpret_cast<SerializedScopeInfo*>(object); |
3040 } | 3040 } |
3041 | 3041 |
| 3042 // Return the type of this scope. |
| 3043 ScopeType Type(); |
| 3044 |
3042 // Does this scope call eval? | 3045 // Does this scope call eval? |
3043 bool CallsEval(); | 3046 bool CallsEval(); |
3044 | 3047 |
3045 // Is this scope a strict mode scope? | 3048 // Is this scope a strict mode scope? |
3046 bool IsStrictMode(); | 3049 bool IsStrictMode(); |
3047 | 3050 |
3048 // Return the number of stack slots for code. | 3051 // Return the number of stack slots for code. |
3049 int NumberOfStackSlots(); | 3052 int NumberOfStackSlots(); |
3050 | 3053 |
3051 // Return the number of context slots for code. | 3054 // Return the number of context slots for code. |
3052 int NumberOfContextSlots(); | 3055 int NumberOfContextSlots(); |
3053 | 3056 |
3054 // Return if this has context slots besides MIN_CONTEXT_SLOTS; | 3057 // Return if this has context slots besides MIN_CONTEXT_SLOTS; |
3055 bool HasHeapAllocatedLocals(); | 3058 bool HasHeapAllocatedLocals(); |
3056 | 3059 |
| 3060 // Return if contexts are allocated for this scope. |
| 3061 bool HasContext(); |
| 3062 |
3057 // Lookup support for serialized scope info. Returns the | 3063 // Lookup support for serialized scope info. Returns the |
3058 // the stack slot index for a given slot name if the slot is | 3064 // the stack slot index for a given slot name if the slot is |
3059 // present; otherwise returns a value < 0. The name must be a symbol | 3065 // present; otherwise returns a value < 0. The name must be a symbol |
3060 // (canonicalized). | 3066 // (canonicalized). |
3061 int StackSlotIndex(String* name); | 3067 int StackSlotIndex(String* name); |
3062 | 3068 |
3063 // Lookup support for serialized scope info. Returns the | 3069 // Lookup support for serialized scope info. Returns the |
3064 // context slot index for a given slot name if the slot is present; otherwise | 3070 // context slot index for a given slot name if the slot is present; otherwise |
3065 // returns a value < 0. The name must be a symbol (canonicalized). | 3071 // returns a value < 0. The name must be a symbol (canonicalized). |
3066 // If the slot is present and mode != NULL, sets *mode to the corresponding | 3072 // If the slot is present and mode != NULL, sets *mode to the corresponding |
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7654 } else { | 7660 } else { |
7655 value &= ~(1 << bit_position); | 7661 value &= ~(1 << bit_position); |
7656 } | 7662 } |
7657 return value; | 7663 return value; |
7658 } | 7664 } |
7659 }; | 7665 }; |
7660 | 7666 |
7661 } } // namespace v8::internal | 7667 } } // namespace v8::internal |
7662 | 7668 |
7663 #endif // V8_OBJECTS_H_ | 7669 #endif // V8_OBJECTS_H_ |
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