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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 |
11 namespace v8 { | 11 namespace v8 { |
12 namespace internal { | 12 namespace internal { |
13 namespace compiler { | 13 namespace compiler { |
14 | 14 |
15 // Encapsulates encoding and decoding of sources positions from which Nodes | 15 // Encapsulates encoding and decoding of sources positions from which Nodes |
16 // originated. | 16 // originated. |
17 class SourcePosition V8_FINAL { | 17 class SourcePosition FINAL { |
18 public: | 18 public: |
19 explicit SourcePosition(int raw = kUnknownPosition) : raw_(raw) {} | 19 explicit SourcePosition(int raw = kUnknownPosition) : raw_(raw) {} |
20 | 20 |
21 static SourcePosition Unknown() { return SourcePosition(kUnknownPosition); } | 21 static SourcePosition Unknown() { return SourcePosition(kUnknownPosition); } |
22 bool IsUnknown() const { return raw() == kUnknownPosition; } | 22 bool IsUnknown() const { return raw() == kUnknownPosition; } |
23 | 23 |
24 static SourcePosition Invalid() { return SourcePosition(kInvalidPosition); } | 24 static SourcePosition Invalid() { return SourcePosition(kInvalidPosition); } |
25 bool IsInvalid() const { return raw() == kInvalidPosition; } | 25 bool IsInvalid() const { return raw() == kInvalidPosition; } |
26 | 26 |
27 int raw() const { return raw_; } | 27 int raw() const { return raw_; } |
28 | 28 |
29 private: | 29 private: |
30 static const int kInvalidPosition = -2; | 30 static const int kInvalidPosition = -2; |
31 static const int kUnknownPosition = RelocInfo::kNoPosition; | 31 static const int kUnknownPosition = RelocInfo::kNoPosition; |
32 STATIC_ASSERT(kInvalidPosition != kUnknownPosition); | 32 STATIC_ASSERT(kInvalidPosition != kUnknownPosition); |
33 int raw_; | 33 int raw_; |
34 }; | 34 }; |
35 | 35 |
36 | 36 |
37 inline bool operator==(const SourcePosition& lhs, const SourcePosition& rhs) { | 37 inline bool operator==(const SourcePosition& lhs, const SourcePosition& rhs) { |
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 V8_FINAL { | 46 class SourcePositionTable FINAL { |
47 public: | 47 public: |
48 class Scope { | 48 class Scope { |
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), |
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90 NodeAuxData<SourcePosition> table_; | 90 NodeAuxData<SourcePosition> table_; |
91 | 91 |
92 DISALLOW_COPY_AND_ASSIGN(SourcePositionTable); | 92 DISALLOW_COPY_AND_ASSIGN(SourcePositionTable); |
93 }; | 93 }; |
94 | 94 |
95 } // namespace compiler | 95 } // namespace compiler |
96 } // namespace internal | 96 } // namespace internal |
97 } // namespace v8 | 97 } // namespace v8 |
98 | 98 |
99 #endif | 99 #endif |
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