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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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