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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef V8_SCOPEINFO_H_ | 5 #ifndef V8_SCOPEINFO_H_ |
| 6 #define V8_SCOPEINFO_H_ | 6 #define V8_SCOPEINFO_H_ |
| 7 | 7 |
| 8 #include "src/allocation.h" | 8 #include "src/allocation.h" |
| 9 #include "src/interface.h" | 9 #include "src/modules.h" |
| 10 #include "src/variables.h" | 10 #include "src/variables.h" |
| 11 | 11 |
| 12 namespace v8 { | 12 namespace v8 { |
| 13 namespace internal { | 13 namespace internal { |
| 14 | 14 |
| 15 // Cache for mapping (data, property name) into context slot index. | 15 // Cache for mapping (data, property name) into context slot index. |
| 16 // The cache contains both positive and negative results. | 16 // The cache contains both positive and negative results. |
| 17 // Slot index equals -1 means the property is absent. | 17 // Slot index equals -1 means the property is absent. |
| 18 // Cleared at startup and prior to mark sweep collection. | 18 // Cleared at startup and prior to mark sweep collection. |
| 19 class ContextSlotCache { | 19 class ContextSlotCache { |
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| 113 //--------------------------------------------------------------------------- | 113 //--------------------------------------------------------------------------- |
| 114 // Auxiliary class used for the description of module instances. | 114 // Auxiliary class used for the description of module instances. |
| 115 // Used by Runtime_DeclareModules. | 115 // Used by Runtime_DeclareModules. |
| 116 | 116 |
| 117 class ModuleInfo: public FixedArray { | 117 class ModuleInfo: public FixedArray { |
| 118 public: | 118 public: |
| 119 static ModuleInfo* cast(Object* description) { | 119 static ModuleInfo* cast(Object* description) { |
| 120 return static_cast<ModuleInfo*>(FixedArray::cast(description)); | 120 return static_cast<ModuleInfo*>(FixedArray::cast(description)); |
| 121 } | 121 } |
| 122 | 122 |
| 123 static Handle<ModuleInfo> Create( | 123 static Handle<ModuleInfo> Create(Isolate* isolate, |
| 124 Isolate* isolate, Interface* interface, Scope* scope); | 124 ModuleDescriptor* descriptor, Scope* scope); |
| 125 | 125 |
| 126 // Index of module's context in host context. | 126 // Index of module's context in host context. |
| 127 int host_index() { return Smi::cast(get(HOST_OFFSET))->value(); } | 127 int host_index() { return Smi::cast(get(HOST_OFFSET))->value(); } |
| 128 | 128 |
| 129 // Name, mode, and index of the i-th export, respectively. | 129 // Name, mode, and index of the i-th export, respectively. |
| 130 // For value exports, the index is the slot of the value in the module | 130 // For value exports, the index is the slot of the value in the module |
| 131 // context, for exported modules it is the slot index of the | 131 // context, for exported modules it is the slot index of the |
| 132 // referred module's context in the host context. | 132 // referred module's context in the host context. |
| 133 // TODO(rossberg): This format cannot yet handle exports of modules declared | 133 // TODO(rossberg): This format cannot yet handle exports of modules declared |
| 134 // in earlier scripts. | 134 // in earlier scripts. |
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| 165 } | 165 } |
| 166 void set_index(int i, int index) { | 166 void set_index(int i, int index) { |
| 167 set(index_offset(i), Smi::FromInt(index)); | 167 set(index_offset(i), Smi::FromInt(index)); |
| 168 } | 168 } |
| 169 }; | 169 }; |
| 170 | 170 |
| 171 | 171 |
| 172 } } // namespace v8::internal | 172 } } // namespace v8::internal |
| 173 | 173 |
| 174 #endif // V8_SCOPEINFO_H_ | 174 #endif // V8_SCOPEINFO_H_ |
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