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1 // Copyright 2012 the V8 project authors. All rights reserved. | 1 // Copyright 2012 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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75 VariableProxy* var_proxy = AsVariableProxy(); | 75 VariableProxy* var_proxy = AsVariableProxy(); |
76 if (var_proxy == NULL) return false; | 76 if (var_proxy == NULL) return false; |
77 Variable* var = var_proxy->var(); | 77 Variable* var = var_proxy->var(); |
78 // The global identifier "undefined" is immutable. Everything | 78 // The global identifier "undefined" is immutable. Everything |
79 // else could be reassigned. | 79 // else could be reassigned. |
80 return var != NULL && var->location() == Variable::UNALLOCATED && | 80 return var != NULL && var->location() == Variable::UNALLOCATED && |
81 var_proxy->name()->Equals(isolate->heap()->undefined_string()); | 81 var_proxy->name()->Equals(isolate->heap()->undefined_string()); |
82 } | 82 } |
83 | 83 |
84 | 84 |
85 bool Expression::IsIdentifier() { | |
86 return (AsVariableProxy() != NULL && !AsVariableProxy()->is_this()); | |
87 } | |
88 | |
89 | |
90 bool Expression::IsIdentifierNamed(String* name) { | |
91 return (AsVariableProxy() != NULL && AsVariableProxy()->name()->Equals(name)); | |
92 } | |
93 | |
94 | |
95 VariableProxy::VariableProxy(Zone* zone, Variable* var, int position) | 85 VariableProxy::VariableProxy(Zone* zone, Variable* var, int position) |
96 : Expression(zone, position), | 86 : Expression(zone, position), |
97 name_(var->name()), | 87 name_(var->name()), |
98 var_(NULL), // Will be set by the call to BindTo. | 88 var_(NULL), // Will be set by the call to BindTo. |
99 is_this_(var->is_this()), | 89 is_this_(var->is_this()), |
100 is_trivial_(false), | 90 is_trivial_(false), |
101 is_lvalue_(false), | 91 is_lvalue_(false), |
102 interface_(var->interface()) { | 92 interface_(var->interface()) { |
103 BindTo(var); | 93 BindTo(var); |
104 } | 94 } |
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1160 OS::SNPrintF(buffer, "%d", Smi::cast(*value_)->value()); | 1150 OS::SNPrintF(buffer, "%d", Smi::cast(*value_)->value()); |
1161 str = arr; | 1151 str = arr; |
1162 } else { | 1152 } else { |
1163 str = DoubleToCString(value_->Number(), buffer); | 1153 str = DoubleToCString(value_->Number(), buffer); |
1164 } | 1154 } |
1165 return isolate_->factory()->NewStringFromAscii(CStrVector(str)); | 1155 return isolate_->factory()->NewStringFromAscii(CStrVector(str)); |
1166 } | 1156 } |
1167 | 1157 |
1168 | 1158 |
1169 } } // namespace v8::internal | 1159 } } // namespace v8::internal |
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