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1 // Copyright 2010 the V8 project authors. All rights reserved. | 1 // Copyright 2010 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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405 | 405 |
406 int Scope::ContextChainLength(Scope* scope) { | 406 int Scope::ContextChainLength(Scope* scope) { |
407 int n = 0; | 407 int n = 0; |
408 for (Scope* s = this; s != scope; s = s->outer_scope_) { | 408 for (Scope* s = this; s != scope; s = s->outer_scope_) { |
409 ASSERT(s != NULL); // scope must be in the scope chain | 409 ASSERT(s != NULL); // scope must be in the scope chain |
410 if (s->num_heap_slots() > 0) n++; | 410 if (s->num_heap_slots() > 0) n++; |
411 } | 411 } |
412 return n; | 412 return n; |
413 } | 413 } |
414 | 414 |
415 bool Scope::HasDuplicateParameterName() { | |
416 int length = params_.length(); | |
417 HashMap map(Match, &HashMap::DefaultAllocator, length * 2); | |
Lasse Reichstein
2011/01/13 07:18:40
If the length is short (e.g., five or less), just
Martin Maly
2011/01/14 00:06:28
Done.
Lasse Reichstein
2011/01/14 11:42:05
And thinking more about it, just do the simple thi
Martin Maly
2011/01/14 16:30:43
Done.
| |
418 for (int i = 0; i < length; i ++) { | |
419 Handle<String> name = params_[i]->name(); | |
420 HashMap::Entry* p = map.Lookup(name.location(), name->Hash(), true); | |
421 if (p->value == NULL) { | |
422 p->value = name.location(); | |
423 } else { | |
424 // Duplicate found! | |
425 return true; | |
426 } | |
427 } | |
428 return false; | |
429 } | |
430 | |
431 bool Scope::HasEvalOrArgumentsParameter() { | |
432 for (int i = 0, length = params_.length(); i < length; i++) { | |
433 Handle<String> name = params_[i]->name(); | |
434 if (name.is_identical_to(Factory::arguments_symbol()) || | |
435 name.is_identical_to(Factory::eval_symbol())) | |
436 return true; | |
437 } | |
438 return false; | |
439 } | |
415 | 440 |
416 #ifdef DEBUG | 441 #ifdef DEBUG |
417 static const char* Header(Scope::Type type) { | 442 static const char* Header(Scope::Type type) { |
418 switch (type) { | 443 switch (type) { |
419 case Scope::EVAL_SCOPE: return "eval"; | 444 case Scope::EVAL_SCOPE: return "eval"; |
420 case Scope::FUNCTION_SCOPE: return "function"; | 445 case Scope::FUNCTION_SCOPE: return "function"; |
421 case Scope::GLOBAL_SCOPE: return "global"; | 446 case Scope::GLOBAL_SCOPE: return "global"; |
422 } | 447 } |
423 UNREACHABLE(); | 448 UNREACHABLE(); |
424 return NULL; | 449 return NULL; |
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973 if (num_heap_slots_ == Context::MIN_CONTEXT_SLOTS && | 998 if (num_heap_slots_ == Context::MIN_CONTEXT_SLOTS && |
974 !must_have_local_context) { | 999 !must_have_local_context) { |
975 num_heap_slots_ = 0; | 1000 num_heap_slots_ = 0; |
976 } | 1001 } |
977 | 1002 |
978 // Allocation done. | 1003 // Allocation done. |
979 ASSERT(num_heap_slots_ == 0 || num_heap_slots_ >= Context::MIN_CONTEXT_SLOTS); | 1004 ASSERT(num_heap_slots_ == 0 || num_heap_slots_ >= Context::MIN_CONTEXT_SLOTS); |
980 } | 1005 } |
981 | 1006 |
982 } } // namespace v8::internal | 1007 } } // namespace v8::internal |
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