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Issue 7187007: Merge arguments branch to bleeding edge (second try). (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Undelete external-array test. Created 9 years, 6 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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74 74
75 Variable(Scope* scope, 75 Variable(Scope* scope,
76 Handle<String> name, 76 Handle<String> name,
77 Mode mode, 77 Mode mode,
78 bool is_valid_lhs, 78 bool is_valid_lhs,
79 Kind kind); 79 Kind kind);
80 80
81 // Printing support 81 // Printing support
82 static const char* Mode2String(Mode mode); 82 static const char* Mode2String(Mode mode);
83 83
84 // Type testing & conversion 84 // Type testing & conversion. Global variables are not slots.
85 Property* AsProperty() const; 85 Property* AsProperty() const;
86 Slot* AsSlot() const; 86 Slot* AsSlot() const;
87 87
88 bool IsValidLeftHandSide() { return is_valid_LHS_; } 88 bool IsValidLeftHandSide() { return is_valid_LHS_; }
89 89
90 // The source code for an eval() call may refer to a variable that is 90 // The source code for an eval() call may refer to a variable that is
91 // in an outer scope about which we don't know anything (it may not 91 // in an outer scope about which we don't know anything (it may not
92 // be the global scope). scope() is NULL in that case. Currently the 92 // be the global scope). scope() is NULL in that case. Currently the
93 // scope is only used to follow the context chain length. 93 // scope is only used to follow the context chain length.
94 Scope* scope() const { return scope_; } 94 Scope* scope() const { return scope_; }
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131 131
132 Variable* local_if_not_shadowed() const { 132 Variable* local_if_not_shadowed() const {
133 ASSERT(mode_ == DYNAMIC_LOCAL && local_if_not_shadowed_ != NULL); 133 ASSERT(mode_ == DYNAMIC_LOCAL && local_if_not_shadowed_ != NULL);
134 return local_if_not_shadowed_; 134 return local_if_not_shadowed_;
135 } 135 }
136 136
137 void set_local_if_not_shadowed(Variable* local) { 137 void set_local_if_not_shadowed(Variable* local) {
138 local_if_not_shadowed_ = local; 138 local_if_not_shadowed_ = local;
139 } 139 }
140 140
141 Expression* rewrite() const { return rewrite_; } 141 Slot* rewrite() const { return rewrite_; }
142 void set_rewrite(Expression* expr) { rewrite_ = expr; } 142 void set_rewrite(Slot* slot) { rewrite_ = slot; }
143 143
144 private: 144 private:
145 Scope* scope_; 145 Scope* scope_;
146 Handle<String> name_; 146 Handle<String> name_;
147 Mode mode_; 147 Mode mode_;
148 Kind kind_; 148 Kind kind_;
149 149
150 Variable* local_if_not_shadowed_; 150 Variable* local_if_not_shadowed_;
151 151
152 // Code generation. 152 // Code generation.
153 // rewrite_ is usually a Slot or a Property, but may be any expression. 153 Slot* rewrite_;
154 Expression* rewrite_;
155 154
156 // Valid as a LHS? (const and this are not valid LHS, for example) 155 // Valid as a LHS? (const and this are not valid LHS, for example)
157 bool is_valid_LHS_; 156 bool is_valid_LHS_;
158 157
159 // Usage info. 158 // Usage info.
160 bool is_accessed_from_inner_scope_; // set by variable resolver 159 bool is_accessed_from_inner_scope_; // set by variable resolver
161 bool is_used_; 160 bool is_used_;
162 }; 161 };
163 162
164 163
165 } } // namespace v8::internal 164 } } // namespace v8::internal
166 165
167 #endif // V8_VARIABLES_H_ 166 #endif // V8_VARIABLES_H_
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