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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 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_OBJECTS_H_ | 5 #ifndef V8_OBJECTS_H_ |
6 #define V8_OBJECTS_H_ | 6 #define V8_OBJECTS_H_ |
7 | 7 |
8 #include <iosfwd> | 8 #include <iosfwd> |
9 | 9 |
10 #include "src/assert-scope.h" | 10 #include "src/assert-scope.h" |
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7935 // - a reference to code for UC16 inputs (bytecode or compiled), or a smi | 7935 // - a reference to code for UC16 inputs (bytecode or compiled), or a smi |
7936 // used for tracking the last usage (used for code flushing).. | 7936 // used for tracking the last usage (used for code flushing).. |
7937 // - max number of registers used by irregexp implementations. | 7937 // - max number of registers used by irregexp implementations. |
7938 // - number of capture registers (output values) of the regexp. | 7938 // - number of capture registers (output values) of the regexp. |
7939 class JSRegExp: public JSObject { | 7939 class JSRegExp: public JSObject { |
7940 public: | 7940 public: |
7941 // Meaning of Type: | 7941 // Meaning of Type: |
7942 // NOT_COMPILED: Initial value. No data has been stored in the JSRegExp yet. | 7942 // NOT_COMPILED: Initial value. No data has been stored in the JSRegExp yet. |
7943 // ATOM: A simple string to match against using an indexOf operation. | 7943 // ATOM: A simple string to match against using an indexOf operation. |
7944 // IRREGEXP: Compiled with Irregexp. | 7944 // IRREGEXP: Compiled with Irregexp. |
7945 // IRREGEXP_NATIVE: Compiled to native code with Irregexp. | |
7946 enum Type { NOT_COMPILED, ATOM, IRREGEXP }; | 7945 enum Type { NOT_COMPILED, ATOM, IRREGEXP }; |
7947 enum Flag { | 7946 enum Flag { |
7948 kNone = 0, | 7947 kNone = 0, |
7949 kGlobal = 1 << 0, | 7948 kGlobal = 1 << 0, |
7950 kIgnoreCase = 1 << 1, | 7949 kIgnoreCase = 1 << 1, |
7951 kMultiline = 1 << 2, | 7950 kMultiline = 1 << 2, |
7952 kSticky = 1 << 3, | 7951 kSticky = 1 << 3, |
7953 kUnicode = 1 << 4, | 7952 kUnicode = 1 << 4, |
7954 }; | 7953 }; |
7955 typedef base::Flags<Flag> Flags; | 7954 typedef base::Flags<Flag> Flags; |
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8028 static const int kIrregexpLatin1CodeSavedIndex = kDataIndex + 2; | 8027 static const int kIrregexpLatin1CodeSavedIndex = kDataIndex + 2; |
8029 // Saved instance of Irregexp compiled code or bytecode for UC16 that is | 8028 // Saved instance of Irregexp compiled code or bytecode for UC16 that is |
8030 // a potential candidate for flushing. | 8029 // a potential candidate for flushing. |
8031 static const int kIrregexpUC16CodeSavedIndex = kDataIndex + 3; | 8030 static const int kIrregexpUC16CodeSavedIndex = kDataIndex + 3; |
8032 | 8031 |
8033 // Maximal number of registers used by either Latin1 or UC16. | 8032 // Maximal number of registers used by either Latin1 or UC16. |
8034 // Only used to check that there is enough stack space | 8033 // Only used to check that there is enough stack space |
8035 static const int kIrregexpMaxRegisterCountIndex = kDataIndex + 4; | 8034 static const int kIrregexpMaxRegisterCountIndex = kDataIndex + 4; |
8036 // Number of captures in the compiled regexp. | 8035 // Number of captures in the compiled regexp. |
8037 static const int kIrregexpCaptureCountIndex = kDataIndex + 5; | 8036 static const int kIrregexpCaptureCountIndex = kDataIndex + 5; |
| 8037 // Maps names of named capture groups (at indices 2i) to their corresponding |
| 8038 // capture group indices (at indices 2i + 1). |
| 8039 static const int kIrregexpCaptureNameMapIndex = kDataIndex + 6; |
8038 | 8040 |
8039 static const int kIrregexpDataSize = kIrregexpCaptureCountIndex + 1; | 8041 static const int kIrregexpDataSize = kIrregexpCaptureNameMapIndex + 1; |
8040 | 8042 |
8041 // Offsets directly into the data fixed array. | 8043 // Offsets directly into the data fixed array. |
8042 static const int kDataTagOffset = | 8044 static const int kDataTagOffset = |
8043 FixedArray::kHeaderSize + kTagIndex * kPointerSize; | 8045 FixedArray::kHeaderSize + kTagIndex * kPointerSize; |
8044 static const int kDataOneByteCodeOffset = | 8046 static const int kDataOneByteCodeOffset = |
8045 FixedArray::kHeaderSize + kIrregexpLatin1CodeIndex * kPointerSize; | 8047 FixedArray::kHeaderSize + kIrregexpLatin1CodeIndex * kPointerSize; |
8046 static const int kDataUC16CodeOffset = | 8048 static const int kDataUC16CodeOffset = |
8047 FixedArray::kHeaderSize + kIrregexpUC16CodeIndex * kPointerSize; | 8049 FixedArray::kHeaderSize + kIrregexpUC16CodeIndex * kPointerSize; |
8048 static const int kIrregexpCaptureCountOffset = | 8050 static const int kIrregexpCaptureCountOffset = |
8049 FixedArray::kHeaderSize + kIrregexpCaptureCountIndex * kPointerSize; | 8051 FixedArray::kHeaderSize + kIrregexpCaptureCountIndex * kPointerSize; |
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10806 } | 10808 } |
10807 return value; | 10809 return value; |
10808 } | 10810 } |
10809 }; | 10811 }; |
10810 | 10812 |
10811 | 10813 |
10812 } // NOLINT, false-positive due to second-order macros. | 10814 } // NOLINT, false-positive due to second-order macros. |
10813 } // NOLINT, false-positive due to second-order macros. | 10815 } // NOLINT, false-positive due to second-order macros. |
10814 | 10816 |
10815 #endif // V8_OBJECTS_H_ | 10817 #endif // V8_OBJECTS_H_ |
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