Class: String

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

Instance Method Summary collapse

Instance Method Details

#ascii_blank? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/sin_fast_blank/sin_fast_blank.c', line 86

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

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

  if (rb_enc_asciicompat(enc)) {
    for (; ptr < end; ptr++) {
      unsigned char c = (unsigned char)*ptr;

      if (c >= 0x80) {
        goto FULL_CHECK;
      }

      if (!rb_isspace(c) && c != 0) {
        return Qfalse;
      }
    }

    return Qtrue;
  }

FULL_CHECK:;
  while (ptr < end) {
    int clen;
    unsigned int codepoint = rb_enc_codepoint_len(ptr, end, &clen, enc);

    if (codepoint != 0 && !rb_isspace(codepoint)) {
      return Qfalse;
    }

    ptr += clen;
  }

  return Qtrue;
}

#blank? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'ext/sin_fast_blank/sin_fast_blank.c', line 39

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

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

  if (rb_enc_asciicompat(enc)) {
    for (const unsigned char *p = (const unsigned char *)ptr; p < (const unsigned char *)end; p++) {
      if (*p >= 0x80) {
        goto FULL_CHECK;
      }

      switch (*p) {
        case 0x9:
        case 0xa:
        case 0xb:
        case 0xc:
        case 0xd:
        case 0x20:
          break;
        default:
          return Qfalse;
      }
    }

    return Qtrue;
  }

FULL_CHECK:;
  while (ptr < end) {
    int clen;
    unsigned int codepoint = rb_enc_codepoint_len(ptr, end, &clen, enc);

    if (!is_unicode_blank(codepoint)) {
      return Qfalse;
    }

    ptr += clen;
  }

  return Qtrue;
}