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| 1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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_AST_SCOPES_H_ | 5 #ifndef V8_AST_SCOPES_H_ |
| 6 #define V8_AST_SCOPES_H_ | 6 #define V8_AST_SCOPES_H_ |
| 7 | 7 |
| 8 #include "src/ast/ast.h" | 8 #include "src/ast/ast.h" |
| 9 #include "src/base/hashmap.h" | 9 #include "src/base/hashmap.h" |
| 10 #include "src/globals.h" | 10 #include "src/globals.h" |
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| 330 | 330 |
| 331 const AstRawString* catch_variable_name() const { | 331 const AstRawString* catch_variable_name() const { |
| 332 DCHECK(is_catch_scope()); | 332 DCHECK(is_catch_scope()); |
| 333 DCHECK_EQ(1, num_var()); | 333 DCHECK_EQ(1, num_var()); |
| 334 return static_cast<AstRawString*>(variables_.Start()->key); | 334 return static_cast<AstRawString*>(variables_.Start()->key); |
| 335 } | 335 } |
| 336 | 336 |
| 337 // --------------------------------------------------------------------------- | 337 // --------------------------------------------------------------------------- |
| 338 // Variable allocation. | 338 // Variable allocation. |
| 339 | 339 |
| 340 // Collect stack and context allocated local variables in this scope. Note | 340 // Collect variables in this scope. Note that the function variable - if |
| 341 // that the function variable - if present - is not collected and should be | 341 // present - is not collected and should be handled separately. |
| 342 // handled separately. | 342 void CollectVariables(ZoneList<Variable*>* stack_locals, |
| 343 void CollectStackAndContextLocals(ZoneList<Variable*>* stack_locals, | 343 ZoneList<Variable*>* context_locals, |
| 344 ZoneList<Variable*>* context_locals, | 344 ZoneList<Variable*>* context_globals); |
| 345 ZoneList<Variable*>* context_globals); | |
| 346 | 345 |
| 347 // Result of variable allocation. | 346 // Result of variable allocation. |
| 348 int num_stack_slots() const { return num_stack_slots_; } | 347 int num_stack_slots() const { return num_stack_slots_; } |
| 349 int num_heap_slots() const { return num_heap_slots_; } | 348 int num_heap_slots() const { return num_heap_slots_; } |
| 350 int num_global_slots() const { return num_global_slots_; } | 349 int num_global_slots() const { return num_global_slots_; } |
| 351 | 350 |
| 352 int StackLocalCount() const; | 351 int StackLocalCount() const; |
| 353 int ContextLocalCount() const; | 352 int ContextLocalCount() const; |
| 354 int ContextGlobalCount() const; | 353 int ContextGlobalCount() const; |
| 355 | 354 |
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| 830 // new.target variable, function scopes only. | 829 // new.target variable, function scopes only. |
| 831 Variable* new_target_; | 830 Variable* new_target_; |
| 832 // Convenience variable; function scopes only. | 831 // Convenience variable; function scopes only. |
| 833 Variable* arguments_; | 832 Variable* arguments_; |
| 834 // Convenience variable; Subclass constructor only | 833 // Convenience variable; Subclass constructor only |
| 835 Variable* this_function_; | 834 Variable* this_function_; |
| 836 }; | 835 }; |
| 837 | 836 |
| 838 class ModuleScope final : public DeclarationScope { | 837 class ModuleScope final : public DeclarationScope { |
| 839 public: | 838 public: |
| 840 ModuleScope(Zone* zone, DeclarationScope* script_scope, | 839 ModuleScope(DeclarationScope* script_scope, |
| 841 AstValueFactory* ast_value_factory); | 840 AstValueFactory* ast_value_factory); |
| 842 | 841 |
| 843 ModuleDescriptor* module() const { | 842 ModuleDescriptor* module() const { |
| 844 DCHECK_NOT_NULL(module_descriptor_); | 843 DCHECK_NOT_NULL(module_descriptor_); |
| 845 return module_descriptor_; | 844 return module_descriptor_; |
| 846 } | 845 } |
| 847 | 846 |
| 848 // Set MODULE as VariableLocation for all variables that will live in some | 847 // Set MODULE as VariableLocation for all variables that will live in some |
| 849 // module's export table. | 848 // module's export table. |
| 850 void AllocateModuleVariables(); | 849 void AllocateModuleVariables(); |
| 851 | 850 |
| 852 private: | 851 private: |
| 853 ModuleDescriptor* module_descriptor_; | 852 ModuleDescriptor* module_descriptor_; |
| 854 }; | 853 }; |
| 855 | 854 |
| 856 } // namespace internal | 855 } // namespace internal |
| 857 } // namespace v8 | 856 } // namespace v8 |
| 858 | 857 |
| 859 #endif // V8_AST_SCOPES_H_ | 858 #endif // V8_AST_SCOPES_H_ |
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