projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /* |
| 2 | * Misc support functions | |
| 3 | */ | |
| 4 | ||
| 5 | #include "duk_internal.h" | |
| 6 | ||
| 7 | DUK_INTERNAL duk_ucodepoint_t duk_hstring_char_code_at_raw(duk_hthread *thr, duk_hstring *h, duk_uint_t pos) { | |
| 8 | duk_uint32_t boff; | |
| 9 | const duk_uint8_t *p, *p_start, *p_end; | |
| 10 | duk_ucodepoint_t cp; | |
| 11 | ||
| 12 | /* Caller must check character offset to be inside the string. */ | |
| 13 | DUK_ASSERT(thr != NULL); | |
| 14 | DUK_ASSERT(h != NULL); | |
| 15 | DUK_ASSERT_DISABLE(pos >= 0); /* unsigned */ | |
| 16 | DUK_ASSERT(pos < (duk_uint_t) DUK_HSTRING_GET_CHARLEN(h)); | |
| 17 | ||
| 18 | boff = duk_heap_strcache_offset_char2byte(thr, h, (duk_uint32_t) pos); | |
| 19 | DUK_DDD(DUK_DDDPRINT("charCodeAt: pos=%ld -> boff=%ld, str=%!O", | |
| 20 | (long) pos, (long) boff, (duk_heaphdr *) h)); | |
| 21 | DUK_ASSERT_DISABLE(boff >= 0); | |
| 22 | DUK_ASSERT(boff < DUK_HSTRING_GET_BYTELEN(h)); | |
| 23 | ||
| 24 | p_start = DUK_HSTRING_GET_DATA(h); | |
| 25 | p_end = p_start + DUK_HSTRING_GET_BYTELEN(h); | |
| 26 | p = p_start + boff; | |
| 27 | DUK_DDD(DUK_DDDPRINT("p_start=%p, p_end=%p, p=%p", | |
| 11fdf7f2 TL |
28 | (const void *) p_start, (const void *) p_end, |
| 29 | (const void *) p)); | |
| 7c673cae FG |
30 | |
| 31 | /* This may throw an error though not for valid E5 strings. */ | |
| 32 | cp = duk_unicode_decode_xutf8_checked(thr, &p, p_start, p_end); | |
| 33 | return cp; | |
| 34 | } | |
| 11fdf7f2 TL |
35 | |
| 36 | #if !defined(DUK_USE_HSTRING_CLEN) | |
| 37 | DUK_INTERNAL duk_size_t duk_hstring_get_charlen(duk_hstring *h) { | |
| 38 | if (DUK_HSTRING_HAS_ASCII(h)) { | |
| 39 | /* Most practical strings will go here. */ | |
| 40 | return DUK_HSTRING_GET_BYTELEN(h); | |
| 41 | } else { | |
| 42 | return duk_unicode_unvalidated_utf8_length(DUK_HSTRING_GET_DATA(h), DUK_HSTRING_GET_BYTELEN(h)); | |
| 43 | } | |
| 44 | } | |
| 45 | #endif /* !DUK_USE_HSTRING_CLEN */ |