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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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| 113 bool IsValidLeftHandSide() { return is_valid_LHS_; } | 113 bool IsValidLeftHandSide() { return is_valid_LHS_; } |
| 114 | 114 |
| 115 // The source code for an eval() call may refer to a variable that is | 115 // The source code for an eval() call may refer to a variable that is |
| 116 // in an outer scope about which we don't know anything (it may not | 116 // in an outer scope about which we don't know anything (it may not |
| 117 // be the global scope). scope() is NULL in that case. Currently the | 117 // be the global scope). scope() is NULL in that case. Currently the |
| 118 // scope is only used to follow the context chain length. | 118 // scope is only used to follow the context chain length. |
| 119 Scope* scope() const { return scope_; } | 119 Scope* scope() const { return scope_; } |
| 120 | 120 |
| 121 Handle<String> name() const { return name_; } | 121 Handle<String> name() const { return name_; } |
| 122 Mode mode() const { return mode_; } | 122 Mode mode() const { return mode_; } |
| 123 bool is_accessed_from_inner_function_scope() const { | 123 bool is_accessed_from_inner_scope() const { |
| 124 return is_accessed_from_inner_function_scope_; | 124 return is_accessed_from_inner_scope_; |
| 125 } | 125 } |
| 126 void MarkAsAccessedFromInnerFunctionScope() { | 126 void MarkAsAccessedFromInnerScope() { |
| 127 ASSERT(mode_ != TEMPORARY); | 127 ASSERT(mode_ != TEMPORARY); |
| 128 is_accessed_from_inner_function_scope_ = true; | 128 is_accessed_from_inner_scope_ = true; |
| 129 } | 129 } |
| 130 bool is_used() { return is_used_; } | 130 bool is_used() { return is_used_; } |
| 131 void set_is_used(bool flag) { is_used_ = flag; } | 131 void set_is_used(bool flag) { is_used_ = flag; } |
| 132 | 132 |
| 133 bool IsVariable(Handle<String> n) const { | 133 bool IsVariable(Handle<String> n) const { |
| 134 return !is_this() && name().is_identical_to(n); | 134 return !is_this() && name().is_identical_to(n); |
| 135 } | 135 } |
| 136 | 136 |
| 137 bool IsUnallocated() const { return location_ == UNALLOCATED; } | 137 bool IsUnallocated() const { return location_ == UNALLOCATED; } |
| 138 bool IsParameter() const { return location_ == PARAMETER; } | 138 bool IsParameter() const { return location_ == PARAMETER; } |
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| 181 Kind kind_; | 181 Kind kind_; |
| 182 Location location_; | 182 Location location_; |
| 183 int index_; | 183 int index_; |
| 184 | 184 |
| 185 Variable* local_if_not_shadowed_; | 185 Variable* local_if_not_shadowed_; |
| 186 | 186 |
| 187 // Valid as a LHS? (const and this are not valid LHS, for example) | 187 // Valid as a LHS? (const and this are not valid LHS, for example) |
| 188 bool is_valid_LHS_; | 188 bool is_valid_LHS_; |
| 189 | 189 |
| 190 // Usage info. | 190 // Usage info. |
| 191 bool is_accessed_from_inner_function_scope_; // set by variable resolver | 191 bool is_accessed_from_inner_scope_; // set by variable resolver |
| 192 bool is_used_; | 192 bool is_used_; |
| 193 }; | 193 }; |
| 194 | 194 |
| 195 | 195 |
| 196 } } // namespace v8::internal | 196 } } // namespace v8::internal |
| 197 | 197 |
| 198 #endif // V8_VARIABLES_H_ | 198 #endif // V8_VARIABLES_H_ |
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