Class: String

Inherits:
Object
  • Object
show all
Defined in:
(unknown)

Instance Method Summary collapse

Instance Method Details

#ascii_blank? ⇒ Boolean

Returns:



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# File 'ext/sin_fast_blank/sin_fast_blank.c', line 298

static VALUE rb_str_ascii_blank(VALUE str) {
  long len = RSTRING_LEN(str);
  if (len == 0) return Qtrue;

  const unsigned char* ptr = (const unsigned char*)RSTRING_PTR(str);
  const unsigned char* end = ptr + len;
  rb_encoding* enc = STR_ENC_GET(str);

  if (rb_enc_asciicompat(enc)) {
    const unsigned char* non_ascii_pos = NULL;
    bool is_blank = false;

#ifdef __AVX2__
    is_blank = check_ascii_blank_avx2(ptr, (size_t)len, &non_ascii_pos);
#elif defined(__SSE2__)
    is_blank = check_ascii_blank_sse2(ptr, (size_t)len, &non_ascii_pos);
#elif defined(__ARM_NEON) && defined(__aarch64__)
    is_blank = check_ascii_blank_neon(ptr, (size_t)len, &non_ascii_pos);
#else
    is_blank = check_ascii_blank_scalar(ptr, (size_t)len, &non_ascii_pos);
#endif

    if (is_blank) return Qtrue;
    if (non_ascii_pos == NULL) return Qfalse;

    ptr = non_ascii_pos;
  }

  while (ptr < end) {
    int clen;
    unsigned int codepoint = rb_enc_codepoint_len((const char*)ptr, (const char*)end, &clen, enc);
    if (codepoint != 0 && !rb_isspace(codepoint)) return Qfalse;
    ptr += clen;
  }

  return Qtrue;
}

#blank? ⇒ Boolean

Returns:



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# File 'ext/sin_fast_blank/sin_fast_blank.c', line 260

static VALUE rb_str_blank(VALUE str) {
  long len = RSTRING_LEN(str);
  if (len == 0) return Qtrue;

  const unsigned char* ptr = (const unsigned char*)RSTRING_PTR(str);
  const unsigned char* end = ptr + len;
  rb_encoding* enc = STR_ENC_GET(str);

  if (rb_enc_asciicompat(enc)) {
    const unsigned char* non_ascii_pos = NULL;
    bool is_blank = false;

#ifdef __AVX2__
    is_blank = check_blank_avx2(ptr, (size_t)len, &non_ascii_pos);
#elif defined(__SSE2__)
    is_blank = check_blank_sse2(ptr, (size_t)len, &non_ascii_pos);
#elif defined(__ARM_NEON) && defined(__aarch64__)
    is_blank = check_blank_neon(ptr, (size_t)len, &non_ascii_pos);
#else
    is_blank = check_blank_scalar(ptr, (size_t)len, &non_ascii_pos);
#endif

    if (is_blank) return Qtrue;
    if (non_ascii_pos == NULL) return Qfalse;

    ptr = non_ascii_pos;
  }

  while (ptr < end) {
    int clen;
    unsigned int codepoint = rb_enc_codepoint_len((const char*)ptr, (const char*)end, &clen, enc);
    if (!is_unicode_blank(codepoint)) return Qfalse;
    ptr += clen;
  }

  return Qtrue;
}