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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 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/ast.h" | 5 #include "src/ast.h" |
6 | 6 |
7 #include <cmath> // For isfinite. | 7 #include <cmath> // For isfinite. |
8 #include "src/builtins.h" | 8 #include "src/builtins.h" |
9 #include "src/code-stubs.h" | 9 #include "src/code-stubs.h" |
10 #include "src/contexts.h" | 10 #include "src/contexts.h" |
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52 const VariableProxy* var_proxy = AsVariableProxy(); | 52 const VariableProxy* var_proxy = AsVariableProxy(); |
53 if (var_proxy == NULL) return false; | 53 if (var_proxy == NULL) return false; |
54 Variable* var = var_proxy->var(); | 54 Variable* var = var_proxy->var(); |
55 // The global identifier "undefined" is immutable. Everything | 55 // The global identifier "undefined" is immutable. Everything |
56 // else could be reassigned. | 56 // else could be reassigned. |
57 return var != NULL && var->location() == Variable::UNALLOCATED && | 57 return var != NULL && var->location() == Variable::UNALLOCATED && |
58 var_proxy->raw_name()->IsOneByteEqualTo("undefined"); | 58 var_proxy->raw_name()->IsOneByteEqualTo("undefined"); |
59 } | 59 } |
60 | 60 |
61 | 61 |
62 VariableProxy::VariableProxy(Zone* zone, Variable* var, int position) | 62 VariableProxy::VariableProxy(Zone* zone, Variable* var, int position, |
63 : Expression(zone, position), | 63 int* id_counter) |
| 64 : Expression(zone, position, id_counter), |
64 name_(var->raw_name()), | 65 name_(var->raw_name()), |
65 var_(NULL), // Will be set by the call to BindTo. | 66 var_(NULL), // Will be set by the call to BindTo. |
66 is_this_(var->is_this()), | 67 is_this_(var->is_this()), |
67 is_assigned_(false), | 68 is_assigned_(false), |
68 interface_(var->interface()), | 69 interface_(var->interface()), |
69 variable_feedback_slot_(kInvalidFeedbackSlot) { | 70 variable_feedback_slot_(kInvalidFeedbackSlot) { |
70 BindTo(var); | 71 BindTo(var); |
71 } | 72 } |
72 | 73 |
73 | 74 |
74 VariableProxy::VariableProxy(Zone* zone, | 75 VariableProxy::VariableProxy(Zone* zone, const AstRawString* name, bool is_this, |
75 const AstRawString* name, | 76 Interface* interface, int position, |
76 bool is_this, | 77 int* id_counter) |
77 Interface* interface, | 78 : Expression(zone, position, id_counter), |
78 int position) | |
79 : Expression(zone, position), | |
80 name_(name), | 79 name_(name), |
81 var_(NULL), | 80 var_(NULL), |
82 is_this_(is_this), | 81 is_this_(is_this), |
83 is_assigned_(false), | 82 is_assigned_(false), |
84 interface_(interface), | 83 interface_(interface), |
85 variable_feedback_slot_(kInvalidFeedbackSlot) { | 84 variable_feedback_slot_(kInvalidFeedbackSlot) {} |
86 } | |
87 | 85 |
88 | 86 |
89 void VariableProxy::BindTo(Variable* var) { | 87 void VariableProxy::BindTo(Variable* var) { |
90 DCHECK(var_ == NULL); // must be bound only once | 88 DCHECK(var_ == NULL); // must be bound only once |
91 DCHECK(var != NULL); // must bind | 89 DCHECK(var != NULL); // must bind |
92 DCHECK(!FLAG_harmony_modules || interface_->IsUnified(var->interface())); | 90 DCHECK(!FLAG_harmony_modules || interface_->IsUnified(var->interface())); |
93 DCHECK((is_this() && var->is_this()) || name_ == var->raw_name()); | 91 DCHECK((is_this() && var->is_this()) || name_ == var->raw_name()); |
94 // Ideally CONST-ness should match. However, this is very hard to achieve | 92 // Ideally CONST-ness should match. However, this is very hard to achieve |
95 // because we don't know the exact semantics of conflicting (const and | 93 // because we don't know the exact semantics of conflicting (const and |
96 // non-const) multiple variable declarations, const vars introduced via | 94 // non-const) multiple variable declarations, const vars introduced via |
97 // eval() etc. Const-ness and variable declarations are a complete mess | 95 // eval() etc. Const-ness and variable declarations are a complete mess |
98 // in JS. Sigh... | 96 // in JS. Sigh... |
99 var_ = var; | 97 var_ = var; |
100 var->set_is_used(); | 98 var->set_is_used(); |
101 } | 99 } |
102 | 100 |
103 | 101 |
104 Assignment::Assignment(Zone* zone, | 102 Assignment::Assignment(Zone* zone, Token::Value op, Expression* target, |
105 Token::Value op, | 103 Expression* value, int pos, int* id_counter) |
106 Expression* target, | 104 : Expression(zone, pos, id_counter), |
107 Expression* value, | |
108 int pos) | |
109 : Expression(zone, pos), | |
110 op_(op), | 105 op_(op), |
111 target_(target), | 106 target_(target), |
112 value_(value), | 107 value_(value), |
113 binary_operation_(NULL), | 108 binary_operation_(NULL), |
114 assignment_id_(GetNextId(zone)), | 109 assignment_id_(GetNextId(id_counter)), |
115 is_uninitialized_(false), | 110 is_uninitialized_(false), |
116 store_mode_(STANDARD_STORE) { } | 111 store_mode_(STANDARD_STORE) {} |
117 | 112 |
118 | 113 |
119 Token::Value Assignment::binary_op() const { | 114 Token::Value Assignment::binary_op() const { |
120 switch (op_) { | 115 switch (op_) { |
121 case Token::ASSIGN_BIT_OR: return Token::BIT_OR; | 116 case Token::ASSIGN_BIT_OR: return Token::BIT_OR; |
122 case Token::ASSIGN_BIT_XOR: return Token::BIT_XOR; | 117 case Token::ASSIGN_BIT_XOR: return Token::BIT_XOR; |
123 case Token::ASSIGN_BIT_AND: return Token::BIT_AND; | 118 case Token::ASSIGN_BIT_AND: return Token::BIT_AND; |
124 case Token::ASSIGN_SHL: return Token::SHL; | 119 case Token::ASSIGN_SHL: return Token::SHL; |
125 case Token::ASSIGN_SAR: return Token::SAR; | 120 case Token::ASSIGN_SAR: return Token::SAR; |
126 case Token::ASSIGN_SHR: return Token::SHR; | 121 case Token::ASSIGN_SHR: return Token::SHR; |
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986 for (int i = 0; i < nodes->length(); i++) { | 981 for (int i = 0; i < nodes->length(); i++) { |
987 RegExpTree* node = nodes->at(i); | 982 RegExpTree* node = nodes->at(i); |
988 int node_min_match = node->min_match(); | 983 int node_min_match = node->min_match(); |
989 min_match_ = IncreaseBy(min_match_, node_min_match); | 984 min_match_ = IncreaseBy(min_match_, node_min_match); |
990 int node_max_match = node->max_match(); | 985 int node_max_match = node->max_match(); |
991 max_match_ = IncreaseBy(max_match_, node_max_match); | 986 max_match_ = IncreaseBy(max_match_, node_max_match); |
992 } | 987 } |
993 } | 988 } |
994 | 989 |
995 | 990 |
996 CaseClause::CaseClause(Zone* zone, | 991 CaseClause::CaseClause(Zone* zone, Expression* label, |
997 Expression* label, | 992 ZoneList<Statement*>* statements, int pos, |
998 ZoneList<Statement*>* statements, | 993 int* id_counter) |
999 int pos) | 994 : Expression(zone, pos, id_counter), |
1000 : Expression(zone, pos), | |
1001 label_(label), | 995 label_(label), |
1002 statements_(statements), | 996 statements_(statements), |
1003 compare_type_(Type::None(zone)), | 997 compare_type_(Type::None(zone)), |
1004 compare_id_(AstNode::GetNextId(zone)), | 998 compare_id_(AstNode::GetNextId(id_counter)), |
1005 entry_id_(AstNode::GetNextId(zone)) { | 999 entry_id_(AstNode::GetNextId(id_counter)) {} |
1006 } | |
1007 | 1000 |
1008 | 1001 |
1009 #define REGULAR_NODE(NodeType) \ | 1002 #define REGULAR_NODE(NodeType) \ |
1010 void AstConstructionVisitor::Visit##NodeType(NodeType* node) { \ | 1003 void AstConstructionVisitor::Visit##NodeType(NodeType* node) { \ |
1011 increase_node_count(); \ | 1004 increase_node_count(); \ |
1012 } | 1005 } |
1013 #define REGULAR_NODE_WITH_FEEDBACK_SLOTS(NodeType) \ | 1006 #define REGULAR_NODE_WITH_FEEDBACK_SLOTS(NodeType) \ |
1014 void AstConstructionVisitor::Visit##NodeType(NodeType* node) { \ | 1007 void AstConstructionVisitor::Visit##NodeType(NodeType* node) { \ |
1015 increase_node_count(); \ | 1008 increase_node_count(); \ |
1016 add_slot_node(node); \ | 1009 add_slot_node(node); \ |
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1135 SNPrintF(buffer, "%d", Smi::cast(*value())->value()); | 1128 SNPrintF(buffer, "%d", Smi::cast(*value())->value()); |
1136 str = arr; | 1129 str = arr; |
1137 } else { | 1130 } else { |
1138 str = DoubleToCString(value()->Number(), buffer); | 1131 str = DoubleToCString(value()->Number(), buffer); |
1139 } | 1132 } |
1140 return isolate_->factory()->NewStringFromAsciiChecked(str); | 1133 return isolate_->factory()->NewStringFromAsciiChecked(str); |
1141 } | 1134 } |
1142 | 1135 |
1143 | 1136 |
1144 } } // namespace v8::internal | 1137 } } // namespace v8::internal |
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