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Diffstat (limited to 'js/src/vm/Unicode.h')
| -rw-r--r-- | js/src/vm/Unicode.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/js/src/vm/Unicode.h b/js/src/vm/Unicode.h index e470f4341..d8807a4de 100644 --- a/js/src/vm/Unicode.h +++ b/js/src/vm/Unicode.h @@ -466,6 +466,19 @@ IsTrailSurrogate(uint32_t codePoint) return codePoint >= TrailSurrogateMin && codePoint <= TrailSurrogateMax; } +/** + * Returns true if the given value is a UTF-16 surrogate. + * + * This function is intended to be used in contexts where 32-bit values may + * need to be tested to see if they reside in the surrogate range, so it + * doesn't just take char16_t. + */ +inline bool +IsSurrogate(uint32_t codePoint) +{ + return LeadSurrogateMin <= codePoint && codePoint <= TrailSurrogateMax; +} + inline char16_t LeadSurrogate(uint32_t codePoint) { |