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char-predicates.h
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27 
28 #ifndef V8_CHAR_PREDICATES_H_
29 #define V8_CHAR_PREDICATES_H_
30 
31 #include "unicode.h"
32 
33 namespace v8 {
34 namespace internal {
35 
36 // Unicode character predicates as defined by ECMA-262, 3rd,
37 // used for lexical analysis.
38 
39 inline bool IsCarriageReturn(uc32 c);
40 inline bool IsLineFeed(uc32 c);
41 inline bool IsDecimalDigit(uc32 c);
42 inline bool IsHexDigit(uc32 c);
43 inline bool IsRegExpWord(uc32 c);
44 inline bool IsRegExpNewline(uc32 c);
45 
47  static inline bool Is(uc32 c) {
48  switch (c) {
49  case '$': case '_': case '\\': return true;
50  default: return unibrow::Letter::Is(c);
51  }
52  }
53 };
54 
55 
57  static inline bool Is(uc32 c) {
58  return IdentifierStart::Is(c)
60  || c == 0x200C // U+200C is Zero-Width Non-Joiner.
61  || c == 0x200D // U+200D is Zero-Width Joiner.
64  }
65 };
66 
67 } } // namespace v8::internal
68 
69 #endif // V8_CHAR_PREDICATES_H_
static bool Is(uchar c)
Definition: unicode.cc:895
bool IsRegExpWord(uc16 c)
int32_t uc32
Definition: globals.h:260
static bool Is(uchar c)
Definition: unicode.cc:685
static bool Is(uchar c)
Definition: unicode.cc:755
bool IsRegExpNewline(uc16 c)
bool IsCarriageReturn(uc32 c)
static bool Is(uchar c)
Definition: unicode.cc:865
bool IsHexDigit(uc32 c)
bool IsDecimalDigit(uc32 c)
bool IsLineFeed(uc32 c)