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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 // 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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| 373 | 373 |
| 374 // Determine if we can use lazy compilation for this scope. | 374 // Determine if we can use lazy compilation for this scope. |
| 375 bool AllowsLazyCompilation() const; | 375 bool AllowsLazyCompilation() const; |
| 376 | 376 |
| 377 // Determine if we can use lazy compilation for this scope without a context. | 377 // Determine if we can use lazy compilation for this scope without a context. |
| 378 bool AllowsLazyCompilationWithoutContext() const; | 378 bool AllowsLazyCompilationWithoutContext() const; |
| 379 | 379 |
| 380 // True if the outer context of this scope is always the global context. | 380 // True if the outer context of this scope is always the global context. |
| 381 bool HasTrivialOuterContext() const; | 381 bool HasTrivialOuterContext() const; |
| 382 | 382 |
| 383 // True if this scope is inside a with scope and all declaration scopes | 383 // True if the outer context allows lazy compilation of this scope. |
| 384 // between them have empty contexts. Such declaration scopes become | 384 bool HasLazyCompilableOuterContext() const; |
| 385 // invisible during scope info deserialization. | |
| 386 bool TrivialDeclarationScopesBeforeWithScope() const; | |
| 387 | 385 |
| 388 // The number of contexts between this and scope; zero if this == scope. | 386 // The number of contexts between this and scope; zero if this == scope. |
| 389 int ContextChainLength(Scope* scope); | 387 int ContextChainLength(Scope* scope); |
| 390 | 388 |
| 391 // Find the first function, global, or eval scope. This is the scope | 389 // Find the first function, global, or eval scope. This is the scope |
| 392 // where var declarations will be hoisted to in the implementation. | 390 // where var declarations will be hoisted to in the implementation. |
| 393 Scope* DeclarationScope(); | 391 Scope* DeclarationScope(); |
| 394 | 392 |
| 395 Handle<ScopeInfo> GetScopeInfo(); | 393 Handle<ScopeInfo> GetScopeInfo(); |
| 396 | 394 |
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| 610 void SetDefaults(ScopeType type, | 608 void SetDefaults(ScopeType type, |
| 611 Scope* outer_scope, | 609 Scope* outer_scope, |
| 612 Handle<ScopeInfo> scope_info); | 610 Handle<ScopeInfo> scope_info); |
| 613 | 611 |
| 614 Zone* zone_; | 612 Zone* zone_; |
| 615 }; | 613 }; |
| 616 | 614 |
| 617 } } // namespace v8::internal | 615 } } // namespace v8::internal |
| 618 | 616 |
| 619 #endif // V8_SCOPES_H_ | 617 #endif // V8_SCOPES_H_ |
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