OLD | NEW |
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_SCOPES_H_ | 5 #ifndef V8_SCOPES_H_ |
6 #define V8_SCOPES_H_ | 6 #define V8_SCOPES_H_ |
7 | 7 |
8 #include "src/ast.h" | 8 #include "src/ast.h" |
9 #include "src/pending-compilation-error-handler.h" | 9 #include "src/pending-compilation-error-handler.h" |
10 #include "src/zone.h" | 10 #include "src/zone.h" |
(...skipping 160 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
171 // Note that we must not share the unresolved variables with | 171 // Note that we must not share the unresolved variables with |
172 // the same name because they may be removed selectively via | 172 // the same name because they may be removed selectively via |
173 // RemoveUnresolved(). | 173 // RemoveUnresolved(). |
174 DCHECK(!already_resolved()); | 174 DCHECK(!already_resolved()); |
175 VariableProxy* proxy = | 175 VariableProxy* proxy = |
176 factory->NewVariableProxy(name, kind, start_position, end_position); | 176 factory->NewVariableProxy(name, kind, start_position, end_position); |
177 unresolved_.Add(proxy, zone_); | 177 unresolved_.Add(proxy, zone_); |
178 return proxy; | 178 return proxy; |
179 } | 179 } |
180 | 180 |
| 181 void AddUnresolved(VariableProxy* proxy) { |
| 182 DCHECK(!already_resolved()); |
| 183 DCHECK(!proxy->is_resolved()); |
| 184 unresolved_.Add(proxy, zone_); |
| 185 } |
| 186 |
181 // Remove a unresolved variable. During parsing, an unresolved variable | 187 // Remove a unresolved variable. During parsing, an unresolved variable |
182 // may have been added optimistically, but then only the variable name | 188 // may have been added optimistically, but then only the variable name |
183 // was used (typically for labels). If the variable was not declared, the | 189 // was used (typically for labels). If the variable was not declared, the |
184 // addition introduced a new unresolved variable which may end up being | 190 // addition introduced a new unresolved variable which may end up being |
185 // allocated globally as a "ghost" variable. RemoveUnresolved removes | 191 // allocated globally as a "ghost" variable. RemoveUnresolved removes |
186 // such a variable again if it was added; otherwise this is a no-op. | 192 // such a variable again if it was added; otherwise this is a no-op. |
187 void RemoveUnresolved(VariableProxy* var); | 193 bool RemoveUnresolved(VariableProxy* var); |
188 | 194 |
189 // Creates a new temporary variable in this scope's TemporaryScope. The | 195 // Creates a new temporary variable in this scope's TemporaryScope. The |
190 // name is only used for printing and cannot be used to find the variable. | 196 // name is only used for printing and cannot be used to find the variable. |
191 // In particular, the only way to get hold of the temporary is by keeping the | 197 // In particular, the only way to get hold of the temporary is by keeping the |
192 // Variable* around. The name should not clash with a legitimate variable | 198 // Variable* around. The name should not clash with a legitimate variable |
193 // names. | 199 // names. |
194 Variable* NewTemporary(const AstRawString* name); | 200 Variable* NewTemporary(const AstRawString* name); |
195 | 201 |
196 // Adds the specific declaration node to the list of declarations in | 202 // Adds the specific declaration node to the list of declarations in |
197 // this scope. The declarations are processed as part of entering | 203 // this scope. The declarations are processed as part of entering |
(...skipping 259 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
457 } | 463 } |
458 | 464 |
459 // Declarations list. | 465 // Declarations list. |
460 ZoneList<Declaration*>* declarations() { return &decls_; } | 466 ZoneList<Declaration*>* declarations() { return &decls_; } |
461 | 467 |
462 // Inner scope list. | 468 // Inner scope list. |
463 ZoneList<Scope*>* inner_scopes() { return &inner_scopes_; } | 469 ZoneList<Scope*>* inner_scopes() { return &inner_scopes_; } |
464 | 470 |
465 // The scope immediately surrounding this scope, or NULL. | 471 // The scope immediately surrounding this scope, or NULL. |
466 Scope* outer_scope() const { return outer_scope_; } | 472 Scope* outer_scope() const { return outer_scope_; } |
| 473 void set_outer_scope(Scope* outer_scope) { outer_scope_ = outer_scope; } |
467 | 474 |
468 // The ModuleDescriptor for this scope; only for module scopes. | 475 // The ModuleDescriptor for this scope; only for module scopes. |
469 ModuleDescriptor* module() const { return module_descriptor_; } | 476 ModuleDescriptor* module() const { return module_descriptor_; } |
470 | 477 |
471 | 478 |
472 void set_class_declaration_group_start(int position) { | 479 void set_class_declaration_group_start(int position) { |
473 class_declaration_group_start_ = position; | 480 class_declaration_group_start_ = position; |
474 } | 481 } |
475 | 482 |
476 int class_declaration_group_start() const { | 483 int class_declaration_group_start() const { |
(...skipping 347 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
824 | 831 |
825 // For tracking which classes are declared consecutively. Needed for strong | 832 // For tracking which classes are declared consecutively. Needed for strong |
826 // mode. | 833 // mode. |
827 int class_declaration_group_start_; | 834 int class_declaration_group_start_; |
828 }; | 835 }; |
829 | 836 |
830 } // namespace internal | 837 } // namespace internal |
831 } // namespace v8 | 838 } // namespace v8 |
832 | 839 |
833 #endif // V8_SCOPES_H_ | 840 #endif // V8_SCOPES_H_ |
OLD | NEW |