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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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48 }; | 48 }; |
49 | 49 |
50 enum Location { | 50 enum Location { |
51 // Before and during variable allocation, a variable whose location is | 51 // Before and during variable allocation, a variable whose location is |
52 // not yet determined. After allocation, a variable looked up as a | 52 // not yet determined. After allocation, a variable looked up as a |
53 // property on the global object (and possibly absent). name() is the | 53 // property on the global object (and possibly absent). name() is the |
54 // variable name, index() is invalid. | 54 // variable name, index() is invalid. |
55 UNALLOCATED, | 55 UNALLOCATED, |
56 | 56 |
57 // A slot in the parameter section on the stack. index() is the | 57 // A slot in the parameter section on the stack. index() is the |
58 // parameter index, counting left-to-right. The reciever is index -1; | 58 // parameter index, counting left-to-right. The receiver is index -1; |
59 // the first parameter is index 0. | 59 // the first parameter is index 0. |
60 PARAMETER, | 60 PARAMETER, |
61 | 61 |
62 // A slot in the local section on the stack. index() is the variable | 62 // A slot in the local section on the stack. index() is the variable |
63 // index in the stack frame, starting at 0. | 63 // index in the stack frame, starting at 0. |
64 LOCAL, | 64 LOCAL, |
65 | 65 |
66 // An indexed slot in a heap context. index() is the variable index in | 66 // An indexed slot in a heap context. index() is the variable index in |
67 // the context object on the heap, starting at 0. scope() is the | 67 // the context object on the heap, starting at 0. scope() is the |
68 // corresponding scope. | 68 // corresponding scope. |
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188 InitializationFlag initialization_flag_; | 188 InitializationFlag initialization_flag_; |
189 | 189 |
190 // Module type info. | 190 // Module type info. |
191 Interface* interface_; | 191 Interface* interface_; |
192 }; | 192 }; |
193 | 193 |
194 | 194 |
195 } } // namespace v8::internal | 195 } } // namespace v8::internal |
196 | 196 |
197 #endif // V8_VARIABLES_H_ | 197 #endif // V8_VARIABLES_H_ |
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