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Side by Side Diff: src/ast/scopes.h

Issue 2373443003: Revert of Preparse inner functions (new try) (Closed)
Patch Set: Created 4 years, 2 months ago
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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/base/hashmap.h" 8 #include "src/base/hashmap.h"
9 #include "src/globals.h" 9 #include "src/globals.h"
10 #include "src/objects.h" 10 #include "src/objects.h"
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335 // --------------------------------------------------------------------------- 335 // ---------------------------------------------------------------------------
336 // Variable allocation. 336 // Variable allocation.
337 337
338 // Result of variable allocation. 338 // Result of variable allocation.
339 int num_stack_slots() const { return num_stack_slots_; } 339 int num_stack_slots() const { return num_stack_slots_; }
340 int num_heap_slots() const { return num_heap_slots_; } 340 int num_heap_slots() const { return num_heap_slots_; }
341 341
342 int StackLocalCount() const; 342 int StackLocalCount() const;
343 int ContextLocalCount() const; 343 int ContextLocalCount() const;
344 344
345 // Determine if we can parse a function literal in this scope lazily without 345 // Determine if we can parse a function literal in this scope lazily.
346 // caring about the unresolved variables within. 346 bool AllowsLazyParsing() const;
347 bool AllowsLazyParsingWithoutUnresolvedVariables() const;
348 347
349 // The number of contexts between this and scope; zero if this == scope. 348 // The number of contexts between this and scope; zero if this == scope.
350 int ContextChainLength(Scope* scope) const; 349 int ContextChainLength(Scope* scope) const;
351 350
352 // The number of contexts between this and the outermost context that has a 351 // The number of contexts between this and the outermost context that has a
353 // sloppy eval call. One if this->calls_sloppy_eval(). 352 // sloppy eval call. One if this->calls_sloppy_eval().
354 int ContextChainLengthUntilOutermostSloppyEval() const; 353 int ContextChainLengthUntilOutermostSloppyEval() const;
355 354
356 // The maximum number of nested contexts required for this scope and any inner 355 // The maximum number of nested contexts required for this scope and any inner
357 // scopes. 356 // scopes.
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532 // to the calling context of 'eval'. 531 // to the calling context of 'eval'.
533 Variable* LookupRecursive(VariableProxy* proxy, Scope* outer_scope_end); 532 Variable* LookupRecursive(VariableProxy* proxy, Scope* outer_scope_end);
534 void ResolveTo(ParseInfo* info, VariableProxy* proxy, Variable* var); 533 void ResolveTo(ParseInfo* info, VariableProxy* proxy, Variable* var);
535 void ResolveVariable(ParseInfo* info, VariableProxy* proxy); 534 void ResolveVariable(ParseInfo* info, VariableProxy* proxy);
536 void ResolveVariablesRecursively(ParseInfo* info); 535 void ResolveVariablesRecursively(ParseInfo* info);
537 536
538 // Finds free variables of this scope. This mutates the unresolved variables 537 // Finds free variables of this scope. This mutates the unresolved variables
539 // list along the way, so full resolution cannot be done afterwards. 538 // list along the way, so full resolution cannot be done afterwards.
540 // If a ParseInfo* is passed, non-free variables will be resolved. 539 // If a ParseInfo* is passed, non-free variables will be resolved.
541 VariableProxy* FetchFreeVariables(DeclarationScope* max_outer_scope, 540 VariableProxy* FetchFreeVariables(DeclarationScope* max_outer_scope,
542 bool try_to_resolve = true,
543 ParseInfo* info = nullptr, 541 ParseInfo* info = nullptr,
544 VariableProxy* stack = nullptr); 542 VariableProxy* stack = nullptr);
545 543
546 // Predicates. 544 // Predicates.
547 bool MustAllocate(Variable* var); 545 bool MustAllocate(Variable* var);
548 bool MustAllocateInContext(Variable* var); 546 bool MustAllocateInContext(Variable* var);
549 547
550 // Variable allocation. 548 // Variable allocation.
551 void AllocateStackSlot(Variable* var); 549 void AllocateStackSlot(Variable* var);
552 void AllocateHeapSlot(Variable* var); 550 void AllocateHeapSlot(Variable* var);
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879 void AllocateModuleVariables(); 877 void AllocateModuleVariables();
880 878
881 private: 879 private:
882 ModuleDescriptor* module_descriptor_; 880 ModuleDescriptor* module_descriptor_;
883 }; 881 };
884 882
885 } // namespace internal 883 } // namespace internal
886 } // namespace v8 884 } // namespace v8
887 885
888 #endif // V8_AST_SCOPES_H_ 886 #endif // V8_AST_SCOPES_H_
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