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Issue 6794050: Revert "[Arguments] Merge (7442,7496] from bleeding_edge." (Closed) Base URL: https://v8.googlecode.com/svn/branches/experimental/arguments
Patch Set: Created 9 years, 8 months ago
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1 // Copyright 2011 the V8 project authors. All rights reserved. 1 // Copyright 2011 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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142 // with statements or eval calls. 142 // with statements or eval calls.
143 Variable* DeclareGlobal(Handle<String> name); 143 Variable* DeclareGlobal(Handle<String> name);
144 144
145 // Add a parameter to the parameter list. The parameter must have been 145 // Add a parameter to the parameter list. The parameter must have been
146 // declared via Declare. The same parameter may occur more than once in 146 // declared via Declare. The same parameter may occur more than once in
147 // the parameter list; they must be added in source order, from left to 147 // the parameter list; they must be added in source order, from left to
148 // right. 148 // right.
149 void AddParameter(Variable* var); 149 void AddParameter(Variable* var);
150 150
151 // Create a new unresolved variable. 151 // Create a new unresolved variable.
152 virtual VariableProxy* NewUnresolved(Handle<String> name, 152 virtual VariableProxy* NewUnresolved(Handle<String> name, bool inside_with);
153 bool inside_with,
154 int position = RelocInfo::kNoPosition);
155 153
156 // Remove a unresolved variable. During parsing, an unresolved variable 154 // Remove a unresolved variable. During parsing, an unresolved variable
157 // may have been added optimistically, but then only the variable name 155 // may have been added optimistically, but then only the variable name
158 // was used (typically for labels). If the variable was not declared, the 156 // was used (typically for labels). If the variable was not declared, the
159 // addition introduced a new unresolved variable which may end up being 157 // addition introduced a new unresolved variable which may end up being
160 // allocated globally as a "ghost" variable. RemoveUnresolved removes 158 // allocated globally as a "ghost" variable. RemoveUnresolved removes
161 // such a variable again if it was added; otherwise this is a no-op. 159 // such a variable again if it was added; otherwise this is a no-op.
162 void RemoveUnresolved(VariableProxy* var); 160 void RemoveUnresolved(VariableProxy* var);
163 161
164 // Creates a new temporary variable in this scope. The name is only used 162 // Creates a new temporary variable in this scope. The name is only used
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466 nesting_level_--; 464 nesting_level_--;
467 ASSERT(nesting_level_ >= 0); 465 ASSERT(nesting_level_ >= 0);
468 if (nesting_level_ < inside_with_level_) { 466 if (nesting_level_ < inside_with_level_) {
469 inside_with_level_ = kNotInsideWith; 467 inside_with_level_ = kNotInsideWith;
470 } 468 }
471 ASSERT(inside_with_level_ <= nesting_level_); 469 ASSERT(inside_with_level_ <= nesting_level_);
472 } 470 }
473 471
474 virtual Variable* Lookup(Handle<String> name) { return NULL; } 472 virtual Variable* Lookup(Handle<String> name) { return NULL; }
475 473
476 virtual VariableProxy* NewUnresolved(Handle<String> name, 474 virtual VariableProxy* NewUnresolved(Handle<String> name, bool inside_with) {
477 bool inside_with,
478 int position = RelocInfo::kNoPosition) {
479 return NULL; 475 return NULL;
480 } 476 }
481 477
482 virtual Variable* NewTemporary(Handle<String> name) { return NULL; } 478 virtual Variable* NewTemporary(Handle<String> name) { return NULL; }
483 479
484 virtual bool HasTrivialOuterContext() const { 480 virtual bool HasTrivialOuterContext() const {
485 return (nesting_level_ == 0 || inside_with_level_ <= 0); 481 return (nesting_level_ == 0 || inside_with_level_ <= 0);
486 } 482 }
487 483
488 private: 484 private:
489 static const int kNotInsideWith = -1; 485 static const int kNotInsideWith = -1;
490 // Number of surrounding scopes of the current scope. 486 // Number of surrounding scopes of the current scope.
491 int nesting_level_; 487 int nesting_level_;
492 // Nesting level of outermost scope that is contained in a with statement, 488 // Nesting level of outermost scope that is contained in a with statement,
493 // or kNotInsideWith if there are no with's around the current scope. 489 // or kNotInsideWith if there are no with's around the current scope.
494 int inside_with_level_; 490 int inside_with_level_;
495 }; 491 };
496 492
497 493
498 } } // namespace v8::internal 494 } } // namespace v8::internal
499 495
500 #endif // V8_SCOPES_H_ 496 #endif // V8_SCOPES_H_
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