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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 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 #ifndef V8_COMPILER_SOURCE_POSITION_H_ | 5 #ifndef V8_COMPILER_SOURCE_POSITION_H_ |
6 #define V8_COMPILER_SOURCE_POSITION_H_ | 6 #define V8_COMPILER_SOURCE_POSITION_H_ |
7 | 7 |
8 #include "src/assembler.h" | 8 #include "src/assembler.h" |
9 #include "src/compiler/node-aux-data.h" | 9 #include "src/compiler/node-aux-data.h" |
10 | 10 |
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38 return lhs.raw() == rhs.raw(); | 38 return lhs.raw() == rhs.raw(); |
39 } | 39 } |
40 | 40 |
41 inline bool operator!=(const SourcePosition& lhs, const SourcePosition& rhs) { | 41 inline bool operator!=(const SourcePosition& lhs, const SourcePosition& rhs) { |
42 return !(lhs == rhs); | 42 return !(lhs == rhs); |
43 } | 43 } |
44 | 44 |
45 | 45 |
46 class SourcePositionTable final { | 46 class SourcePositionTable final { |
47 public: | 47 public: |
48 class Scope { | 48 class Scope final { |
49 public: | 49 public: |
50 Scope(SourcePositionTable* source_positions, SourcePosition position) | 50 Scope(SourcePositionTable* source_positions, SourcePosition position) |
51 : source_positions_(source_positions), | 51 : source_positions_(source_positions), |
52 prev_position_(source_positions->current_position_) { | 52 prev_position_(source_positions->current_position_) { |
53 Init(position); | 53 Init(position); |
54 } | 54 } |
55 Scope(SourcePositionTable* source_positions, Node* node) | 55 Scope(SourcePositionTable* source_positions, Node* node) |
56 : source_positions_(source_positions), | 56 : source_positions_(source_positions), |
57 prev_position_(source_positions->current_position_) { | 57 prev_position_(source_positions->current_position_) { |
58 Init(source_positions_->GetSourcePosition(node)); | 58 Init(source_positions_->GetSourcePosition(node)); |
59 } | 59 } |
60 ~Scope() { source_positions_->current_position_ = prev_position_; } | 60 ~Scope() { source_positions_->current_position_ = prev_position_; } |
61 | 61 |
62 private: | 62 private: |
63 void Init(SourcePosition position) { | 63 void Init(SourcePosition position) { |
64 if (!position.IsUnknown() || prev_position_.IsInvalid()) { | 64 if (!position.IsUnknown() || prev_position_.IsInvalid()) { |
65 source_positions_->current_position_ = position; | 65 source_positions_->current_position_ = position; |
66 } | 66 } |
67 } | 67 } |
68 | 68 |
69 SourcePositionTable* source_positions_; | 69 SourcePositionTable* const source_positions_; |
70 SourcePosition prev_position_; | 70 SourcePosition const prev_position_; |
71 DISALLOW_COPY_AND_ASSIGN(Scope); | 71 DISALLOW_COPY_AND_ASSIGN(Scope); |
72 }; | 72 }; |
73 | 73 |
74 explicit SourcePositionTable(Graph* graph); | 74 explicit SourcePositionTable(Graph* graph); |
75 ~SourcePositionTable() { | 75 ~SourcePositionTable() { |
76 if (decorator_ != NULL) RemoveDecorator(); | 76 if (decorator_) RemoveDecorator(); |
77 } | 77 } |
78 | 78 |
79 void AddDecorator(); | 79 void AddDecorator(); |
80 void RemoveDecorator(); | 80 void RemoveDecorator(); |
81 | 81 |
82 SourcePosition GetSourcePosition(Node* node) const; | 82 SourcePosition GetSourcePosition(Node* node) const; |
83 | 83 |
84 void Print(std::ostream& os) const; | 84 void Print(std::ostream& os) const; |
85 | 85 |
86 private: | 86 private: |
87 class Decorator; | 87 class Decorator; |
88 | 88 |
89 Graph* graph_; | 89 Graph* const graph_; |
90 Decorator* decorator_; | 90 Decorator* decorator_; |
91 SourcePosition current_position_; | 91 SourcePosition current_position_; |
92 NodeAuxData<SourcePosition> table_; | 92 NodeAuxData<SourcePosition> table_; |
93 | 93 |
94 DISALLOW_COPY_AND_ASSIGN(SourcePositionTable); | 94 DISALLOW_COPY_AND_ASSIGN(SourcePositionTable); |
95 }; | 95 }; |
96 | 96 |
97 } // namespace compiler | 97 } // namespace compiler |
98 } // namespace internal | 98 } // namespace internal |
99 } // namespace v8 | 99 } // namespace v8 |
100 | 100 |
101 #endif | 101 #endif // V8_COMPILER_SOURCE_POSITION_H_ |
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