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1 // Copyright 2006-2008 the V8 project authors. All rights reserved. | 1 // Copyright 2006-2008 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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68 // This code is in ScopeInfo because only here we should have to know | 68 // This code is in ScopeInfo because only here we should have to know |
69 // about the encoding. | 69 // about the encoding. |
70 static void IterateScopeInfo(Code* code, ObjectVisitor* v); | 70 static void IterateScopeInfo(Code* code, ObjectVisitor* v); |
71 | 71 |
72 | 72 |
73 // -------------------------------------------------------------------------- | 73 // -------------------------------------------------------------------------- |
74 // Lookup | 74 // Lookup |
75 | 75 |
76 Handle<String> function_name() const { return function_name_; } | 76 Handle<String> function_name() const { return function_name_; } |
77 | 77 |
78 bool supports_eval() const { return supports_eval_; } | |
79 | |
80 Handle<String> parameter_name(int i) const { return parameters_[i]; } | 78 Handle<String> parameter_name(int i) const { return parameters_[i]; } |
81 int number_of_parameters() const { return parameters_.length(); } | 79 int number_of_parameters() const { return parameters_.length(); } |
82 | 80 |
83 Handle<String> stack_slot_name(int i) const { return stack_slots_[i]; } | 81 Handle<String> stack_slot_name(int i) const { return stack_slots_[i]; } |
84 int number_of_stack_slots() const { return stack_slots_.length(); } | 82 int number_of_stack_slots() const { return stack_slots_.length(); } |
85 | 83 |
86 Handle<String> context_slot_name(int i) const { | 84 Handle<String> context_slot_name(int i) const { |
87 return context_slots_[i - Context::MIN_CONTEXT_SLOTS]; | 85 return context_slots_[i - Context::MIN_CONTEXT_SLOTS]; |
88 } | 86 } |
89 int number_of_context_slots() const { | 87 int number_of_context_slots() const { |
90 int l = context_slots_.length(); | 88 int l = context_slots_.length(); |
91 return l == 0 ? 0 : l + Context::MIN_CONTEXT_SLOTS; | 89 return l == 0 ? 0 : l + Context::MIN_CONTEXT_SLOTS; |
92 } | 90 } |
93 | 91 |
94 Handle<String> LocalName(int i) const; | 92 Handle<String> LocalName(int i) const; |
95 int NumberOfLocals() const; | 93 int NumberOfLocals() const; |
96 | 94 |
97 | 95 |
98 // -------------------------------------------------------------------------- | 96 // -------------------------------------------------------------------------- |
99 // The following functions provide quick access to scope info details | 97 // The following functions provide quick access to scope info details |
100 // for runtime routines w/o the need to explicitly create a ScopeInfo | 98 // for runtime routines w/o the need to explicitly create a ScopeInfo |
101 // object. | 99 // object. |
102 // | 100 // |
103 // ScopeInfo is the only class which should have to know about the | 101 // ScopeInfo is the only class which should have to know about the |
104 // encoding of it's information in a Code object, which is why these | 102 // encoding of it's information in a Code object, which is why these |
105 // functions are in this class. | 103 // functions are in this class. |
106 | 104 |
107 static bool SupportsEval(Code* code); | |
108 | |
109 // Return the number of stack slots for code. | 105 // Return the number of stack slots for code. |
110 static int NumberOfStackSlots(Code* code); | 106 static int NumberOfStackSlots(Code* code); |
111 | 107 |
112 // Return the number of context slots for code. | 108 // Return the number of context slots for code. |
113 static int NumberOfContextSlots(Code* code); | 109 static int NumberOfContextSlots(Code* code); |
114 | 110 |
115 // Lookup support for scope info embedded in Code objects. Returns | 111 // Lookup support for scope info embedded in Code objects. Returns |
116 // the stack slot index for a given slot name if the slot is | 112 // the stack slot index for a given slot name if the slot is |
117 // present; otherwise returns a value < 0. The name must be a symbol | 113 // present; otherwise returns a value < 0. The name must be a symbol |
118 // (canonicalized). | 114 // (canonicalized). |
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139 | 135 |
140 // -------------------------------------------------------------------------- | 136 // -------------------------------------------------------------------------- |
141 // Debugging support | 137 // Debugging support |
142 | 138 |
143 #ifdef DEBUG | 139 #ifdef DEBUG |
144 void Print(); | 140 void Print(); |
145 #endif | 141 #endif |
146 | 142 |
147 private: | 143 private: |
148 Handle<String> function_name_; | 144 Handle<String> function_name_; |
149 bool supports_eval_; | |
150 List<Handle<String>, Allocator > parameters_; | 145 List<Handle<String>, Allocator > parameters_; |
151 List<Handle<String>, Allocator > stack_slots_; | 146 List<Handle<String>, Allocator > stack_slots_; |
152 List<Handle<String>, Allocator > context_slots_; | 147 List<Handle<String>, Allocator > context_slots_; |
153 List<Variable::Mode, Allocator > context_modes_; | 148 List<Variable::Mode, Allocator > context_modes_; |
154 }; | 149 }; |
155 | 150 |
156 } } // namespace v8::internal | 151 } } // namespace v8::internal |
157 | 152 |
158 #endif // V8_SCOPEINFO_H_ | 153 #endif // V8_SCOPEINFO_H_ |
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