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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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| 90 bool IsValidLeftHandSide() { return is_valid_LHS_; } | 90 bool IsValidLeftHandSide() { return is_valid_LHS_; } |
| 91 | 91 |
| 92 // The source code for an eval() call may refer to a variable that is | 92 // The source code for an eval() call may refer to a variable that is |
| 93 // in an outer scope about which we don't know anything (it may not | 93 // in an outer scope about which we don't know anything (it may not |
| 94 // be the global scope). scope() is NULL in that case. Currently the | 94 // be the global scope). scope() is NULL in that case. Currently the |
| 95 // scope is only used to follow the context chain length. | 95 // scope is only used to follow the context chain length. |
| 96 Scope* scope() const { return scope_; } | 96 Scope* scope() const { return scope_; } |
| 97 | 97 |
| 98 Handle<String> name() const { return name_; } | 98 Handle<String> name() const { return name_; } |
| 99 Mode mode() const { return mode_; } | 99 Mode mode() const { return mode_; } |
| 100 bool is_accessed_from_inner_function_scope() const { | 100 bool is_accessed_from_inner_scope() const { |
| 101 return is_accessed_from_inner_function_scope_; | 101 return is_accessed_from_inner_scope_; |
| 102 } | 102 } |
| 103 void MarkAsAccessedFromInnerFunctionScope() { | 103 void MarkAsAccessedFromInnerScope() { |
| 104 ASSERT(mode_ != TEMPORARY); | 104 ASSERT(mode_ != TEMPORARY); |
| 105 is_accessed_from_inner_function_scope_ = true; | 105 is_accessed_from_inner_scope_ = true; |
| 106 } | 106 } |
| 107 bool is_used() { return is_used_; } | 107 bool is_used() { return is_used_; } |
| 108 void set_is_used(bool flag) { is_used_ = flag; } | 108 void set_is_used(bool flag) { is_used_ = flag; } |
| 109 | 109 |
| 110 bool IsVariable(Handle<String> n) const { | 110 bool IsVariable(Handle<String> n) const { |
| 111 return !is_this() && name().is_identical_to(n); | 111 return !is_this() && name().is_identical_to(n); |
| 112 } | 112 } |
| 113 | 113 |
| 114 bool IsStackAllocated() const; | 114 bool IsStackAllocated() const; |
| 115 bool IsParameter() const; // Includes 'this'. | 115 bool IsParameter() const; // Includes 'this'. |
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| 152 | 152 |
| 153 Variable* local_if_not_shadowed_; | 153 Variable* local_if_not_shadowed_; |
| 154 | 154 |
| 155 // Code generation. | 155 // Code generation. |
| 156 Slot* rewrite_; | 156 Slot* rewrite_; |
| 157 | 157 |
| 158 // Valid as a LHS? (const and this are not valid LHS, for example) | 158 // Valid as a LHS? (const and this are not valid LHS, for example) |
| 159 bool is_valid_LHS_; | 159 bool is_valid_LHS_; |
| 160 | 160 |
| 161 // Usage info. | 161 // Usage info. |
| 162 bool is_accessed_from_inner_function_scope_; // set by variable resolver | 162 bool is_accessed_from_inner_scope_; // set by variable resolver |
| 163 bool is_used_; | 163 bool is_used_; |
| 164 }; | 164 }; |
| 165 | 165 |
| 166 | 166 |
| 167 } } // namespace v8::internal | 167 } } // namespace v8::internal |
| 168 | 168 |
| 169 #endif // V8_VARIABLES_H_ | 169 #endif // V8_VARIABLES_H_ |
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