grok_hex grok_oct grok_bin grok_numeric_radix grok_number __UNDEFINED__

__UNDEFINED__ IN_PERL_COMPILETIME (PL_curcop == &PL_compiling) __UNDEFINED__ IN_LOCALE_RUNTIME (PL_curcop->op_private & HINT_LOCALE) __UNDEFINED__ IN_LOCALE_COMPILETIME (PL_hints & HINT_LOCALE) __UNDEFINED__ IN_LOCALE (IN_PERL_COMPILETIME ? IN_LOCALE_COMPILETIME : IN_LOCALE_RUNTIME)

__UNDEFINED__ IS_NUMBER_IN_UV 0x01 __UNDEFINED__ IS_NUMBER_GREATER_THAN_UV_MAX 0x02 __UNDEFINED__ IS_NUMBER_NOT_INT 0x04 __UNDEFINED__ IS_NUMBER_NEG 0x08 __UNDEFINED__ IS_NUMBER_INFINITY 0x10 __UNDEFINED__ IS_NUMBER_NAN 0x20

__UNDEFINED__ GROK_NUMERIC_RADIX(sp, send) grok_numeric_radix(sp, send)

__UNDEFINED__ PERL_SCAN_GREATER_THAN_UV_MAX 0x02 __UNDEFINED__ PERL_SCAN_SILENT_ILLDIGIT 0x04 __UNDEFINED__ PERL_SCAN_ALLOW_UNDERSCORES 0x01 __UNDEFINED__ PERL_SCAN_DISALLOW_PREFIX 0x02

#ifndef grok_numeric_radix #if { NEED grok_numeric_radix } bool grok_numeric_radix(pTHX_ const char **sp, const char *send) { #ifdef USE_LOCALE_NUMERIC #ifdef PL_numeric_radix_sv if (PL_numeric_radix_sv && IN_LOCALE) { STRLEN len; char* radix = SvPV(PL_numeric_radix_sv, len); if (*sp + len <= send && memEQ(*sp, radix, len)) { *sp += len; return TRUE; } } #else /* older perls don't have PL_numeric_radix_sv so the radix * must manually be requested from locale.h */ #include <locale.h> dTHR; /* needed for older threaded perls */ struct lconv *lc = localeconv(); char *radix = lc->decimal_point; if (radix && IN_LOCALE) { STRLEN len = strlen(radix); if (*sp + len <= send && memEQ(*sp, radix, len)) { *sp += len; return TRUE; } } #endif #endif /* USE_LOCALE_NUMERIC */ /* always try "." if numeric radix didn't match because * we may have data from different locales mixed */ if (*sp < send && **sp == '.') { ++*sp; return TRUE; } return FALSE; } #endif #endif

#ifndef grok_number #if { NEED grok_number } int grok_number(pTHX_ const char *pv, STRLEN len, UV *valuep) { const char *s = pv; const char *send = pv + len; const UV max_div_10 = UV_MAX / 10; const char max_mod_10 = UV_MAX % 10; int numtype = 0; int sawinf = 0; int sawnan = 0;

while (s < send && isSPACE(*s))
  s++;
if (s == send) {
  return 0;
} else if (*s == '-') {
  s++;
  numtype = IS_NUMBER_NEG;
}
else if (*s == '+')
s++;

if (s == send)
  return 0;

/* next must be digit or the radix separator or beginning of infinity */
if (isDIGIT(*s)) {
  /* UVs are at least 32 bits, so the first 9 decimal digits cannot
     overflow.  */
  UV value = *s - '0';
  /* This construction seems to be more optimiser friendly.
     (without it gcc does the isDIGIT test and the *s - '0' separately)
     With it gcc on arm is managing 6 instructions (6 cycles) per digit.
     In theory the optimiser could deduce how far to unroll the loop
     before checking for overflow.  */
  if (++s < send) {
    int digit = *s - '0';
    if (digit >= 0 && digit <= 9) {
      value = value * 10 + digit;
      if (++s < send) {
        digit = *s - '0';
        if (digit >= 0 && digit <= 9) {
          value = value * 10 + digit;
          if (++s < send) {
            digit = *s - '0';
            if (digit >= 0 && digit <= 9) {
              value = value * 10 + digit;
              if (++s < send) {
                digit = *s - '0';
                if (digit >= 0 && digit <= 9) {
                  value = value * 10 + digit;
                  if (++s < send) {
                    digit = *s - '0';
                    if (digit >= 0 && digit <= 9) {
                      value = value * 10 + digit;
                      if (++s < send) {
                        digit = *s - '0';
                        if (digit >= 0 && digit <= 9) {
                          value = value * 10 + digit;
                          if (++s < send) {
                            digit = *s - '0';
                            if (digit >= 0 && digit <= 9) {
                              value = value * 10 + digit;
                              if (++s < send) {
                                digit = *s - '0';
                                if (digit >= 0 && digit <= 9) {
                                  value = value * 10 + digit;
                                  if (++s < send) {
                                    /* Now got 9 digits, so need to check
                                       each time for overflow.  */
                                    digit = *s - '0';
                                    while (digit >= 0 && digit <= 9
                                           && (value < max_div_10
                                               || (value == max_div_10
                                                   && digit <= max_mod_10))) {
                                      value = value * 10 + digit;
                                      if (++s < send)
                                        digit = *s - '0';
                                      else
                                        break;
                                    }
                                    if (digit >= 0 && digit <= 9
                                        && (s < send)) {
                                      /* value overflowed.
                                         skip the remaining digits, don't
                                         worry about setting *valuep.  */
                                      do {
                                        s++;
                                      } while (s < send && isDIGIT(*s));
                                      numtype |=
                                        IS_NUMBER_GREATER_THAN_UV_MAX;
                                      goto skip_value;
                                    }
                                  }
                                }
                              }
                            }
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  }
  numtype |= IS_NUMBER_IN_UV;
  if (valuep)
    *valuep = value;

skip_value:
  if (GROK_NUMERIC_RADIX(&s, send)) {
    numtype |= IS_NUMBER_NOT_INT;
    while (s < send && isDIGIT(*s))  /* optional digits after the radix */
      s++;
  }
}
else if (GROK_NUMERIC_RADIX(&s, send)) {
  numtype |= IS_NUMBER_NOT_INT | IS_NUMBER_IN_UV; /* valuep assigned below */
  /* no digits before the radix means we need digits after it */
  if (s < send && isDIGIT(*s)) {
    do {
      s++;
    } while (s < send && isDIGIT(*s));
    if (valuep) {
      /* integer approximation is valid - it's 0.  */
      *valuep = 0;
    }
  }
  else
    return 0;
} else if (*s == 'I' || *s == 'i') {
  s++; if (s == send || (*s != 'N' && *s != 'n')) return 0;
  s++; if (s == send || (*s != 'F' && *s != 'f')) return 0;
  s++; if (s < send && (*s == 'I' || *s == 'i')) {
    s++; if (s == send || (*s != 'N' && *s != 'n')) return 0;
    s++; if (s == send || (*s != 'I' && *s != 'i')) return 0;
    s++; if (s == send || (*s != 'T' && *s != 't')) return 0;
    s++; if (s == send || (*s != 'Y' && *s != 'y')) return 0;
    s++;
  }
  sawinf = 1;
} else if (*s == 'N' || *s == 'n') {
  /* XXX TODO: There are signaling NaNs and quiet NaNs. */
  s++; if (s == send || (*s != 'A' && *s != 'a')) return 0;
  s++; if (s == send || (*s != 'N' && *s != 'n')) return 0;
  s++;
  sawnan = 1;
} else
  return 0;

if (sawinf) {
  numtype &= IS_NUMBER_NEG; /* Keep track of sign  */
  numtype |= IS_NUMBER_INFINITY | IS_NUMBER_NOT_INT;
} else if (sawnan) {
  numtype &= IS_NUMBER_NEG; /* Keep track of sign  */
  numtype |= IS_NUMBER_NAN | IS_NUMBER_NOT_INT;
} else if (s < send) {
  /* we can have an optional exponent part */
  if (*s == 'e' || *s == 'E') {
    /* The only flag we keep is sign.  Blow away any "it's UV"  */
    numtype &= IS_NUMBER_NEG;
    numtype |= IS_NUMBER_NOT_INT;
    s++;
    if (s < send && (*s == '-' || *s == '+'))
      s++;
    if (s < send && isDIGIT(*s)) {
      do {
        s++;
      } while (s < send && isDIGIT(*s));
    }
    else
    return 0;
  }
}
while (s < send && isSPACE(*s))
  s++;
if (s >= send)
  return numtype;
if (len == 10 && memEQ(pv, "0 but true", 10)) {
  if (valuep)
    *valuep = 0;
  return IS_NUMBER_IN_UV;
}
return 0;
}
#endif
#endif

/* * The grok_* routines have been modified to use warn() instead of * Perl_warner(). Also, 'hexdigit' was the former name of PL_hexdigit, * which is why the stack variable has been renamed to 'xdigit'. */

#ifndef grok_bin #if { NEED grok_bin } UV grok_bin(pTHX_ const char *start, STRLEN *len_p, I32 *flags, NV *result) { const char *s = start; STRLEN len = *len_p; UV value = 0; NV value_nv = 0;

const UV max_div_2 = UV_MAX / 2;
bool allow_underscores = *flags & PERL_SCAN_ALLOW_UNDERSCORES;
bool overflowed = FALSE;

if (!(*flags & PERL_SCAN_DISALLOW_PREFIX)) {
    /* strip off leading b or 0b.
       for compatibility silently suffer "b" and "0b" as valid binary
       numbers. */
    if (len >= 1) {
        if (s[0] == 'b') {
            s++;
            len--;
        }
        else if (len >= 2 && s[0] == '0' && s[1] == 'b') {
            s+=2;
            len-=2;
        }
    }
}

for (; len-- && *s; s++) {
    char bit = *s;
    if (bit == '0' || bit == '1') {
        /* Write it in this wonky order with a goto to attempt to get the
           compiler to make the common case integer-only loop pretty tight.
           With gcc seems to be much straighter code than old scan_bin.  */
      redo:
        if (!overflowed) {
            if (value <= max_div_2) {
                value = (value << 1) | (bit - '0');
                continue;
            }
            /* Bah. We're just overflowed.  */
            warn("Integer overflow in binary number");
            overflowed = TRUE;
            value_nv = (NV) value;
        }
        value_nv *= 2.0;
        /* If an NV has not enough bits in its mantissa to
         * represent a UV this summing of small low-order numbers
         * is a waste of time (because the NV cannot preserve
         * the low-order bits anyway): we could just remember when
         * did we overflow and in the end just multiply value_nv by the
         * right amount. */
        value_nv += (NV)(bit - '0');
        continue;
    }
    if (bit == '_' && len && allow_underscores && (bit = s[1])
        && (bit == '0' || bit == '1'))
        {
            --len;
            ++s;
            goto redo;
        }
    if (!(*flags & PERL_SCAN_SILENT_ILLDIGIT))
        warn("Illegal binary digit '%c' ignored", *s);
    break;
}

if (   ( overflowed && value_nv > 4294967295.0)
#if UVSIZE > 4
    || (!overflowed && value > 0xffffffff  )
#endif
    ) {
    warn("Binary number > 0b11111111111111111111111111111111 non-portable");
}
*len_p = s - start;
if (!overflowed) {
    *flags = 0;
    return value;
}
*flags = PERL_SCAN_GREATER_THAN_UV_MAX;
if (result)
    *result = value_nv;
return UV_MAX;
}
#endif
#endif

#ifndef grok_hex #if { NEED grok_hex } UV grok_hex(pTHX_ const char *start, STRLEN *len_p, I32 *flags, NV *result) { const char *s = start; STRLEN len = *len_p; UV value = 0; NV value_nv = 0;

const UV max_div_16 = UV_MAX / 16;
bool allow_underscores = *flags & PERL_SCAN_ALLOW_UNDERSCORES;
bool overflowed = FALSE;
const char *xdigit;

if (!(*flags & PERL_SCAN_DISALLOW_PREFIX)) {
    /* strip off leading x or 0x.
       for compatibility silently suffer "x" and "0x" as valid hex numbers.
    */
    if (len >= 1) {
        if (s[0] == 'x') {
            s++;
            len--;
        }
        else if (len >= 2 && s[0] == '0' && s[1] == 'x') {
            s+=2;
            len-=2;
        }
    }
}

for (; len-- && *s; s++) {
    xdigit = strchr((char *) PL_hexdigit, *s);
    if (xdigit) {
        /* Write it in this wonky order with a goto to attempt to get the
           compiler to make the common case integer-only loop pretty tight.
           With gcc seems to be much straighter code than old scan_hex.  */
      redo:
        if (!overflowed) {
            if (value <= max_div_16) {
                value = (value << 4) | ((xdigit - PL_hexdigit) & 15);
                continue;
            }
            warn("Integer overflow in hexadecimal number");
            overflowed = TRUE;
            value_nv = (NV) value;
        }
        value_nv *= 16.0;
        /* If an NV has not enough bits in its mantissa to
         * represent a UV this summing of small low-order numbers
         * is a waste of time (because the NV cannot preserve
         * the low-order bits anyway): we could just remember when
         * did we overflow and in the end just multiply value_nv by the
         * right amount of 16-tuples. */
        value_nv += (NV)((xdigit - PL_hexdigit) & 15);
        continue;
    }
    if (*s == '_' && len && allow_underscores && s[1]
            && (xdigit = strchr((char *) PL_hexdigit, s[1])))
        {
            --len;
            ++s;
            goto redo;
        }
    if (!(*flags & PERL_SCAN_SILENT_ILLDIGIT))
        warn("Illegal hexadecimal digit '%c' ignored", *s);
    break;
}

if (   ( overflowed && value_nv > 4294967295.0)
#if UVSIZE > 4
    || (!overflowed && value > 0xffffffff  )
#endif
    ) {
    warn("Hexadecimal number > 0xffffffff non-portable");
}
*len_p = s - start;
if (!overflowed) {
    *flags = 0;
    return value;
}
*flags = PERL_SCAN_GREATER_THAN_UV_MAX;
if (result)
    *result = value_nv;
return UV_MAX;
}
#endif
#endif

#ifndef grok_oct #if { NEED grok_oct } UV grok_oct(pTHX_ const char *start, STRLEN *len_p, I32 *flags, NV *result) { const char *s = start; STRLEN len = *len_p; UV value = 0; NV value_nv = 0;

const UV max_div_8 = UV_MAX / 8;
bool allow_underscores = *flags & PERL_SCAN_ALLOW_UNDERSCORES;
bool overflowed = FALSE;

for (; len-- && *s; s++) {
     /* gcc 2.95 optimiser not smart enough to figure that this subtraction
        out front allows slicker code.  */
    int digit = *s - '0';
    if (digit >= 0 && digit <= 7) {
        /* Write it in this wonky order with a goto to attempt to get the
           compiler to make the common case integer-only loop pretty tight.
        */
      redo:
        if (!overflowed) {
            if (value <= max_div_8) {
                value = (value << 3) | digit;
                continue;
            }
            /* Bah. We're just overflowed.  */
            warn("Integer overflow in octal number");
            overflowed = TRUE;
            value_nv = (NV) value;
        }
        value_nv *= 8.0;
        /* If an NV has not enough bits in its mantissa to
         * represent a UV this summing of small low-order numbers
         * is a waste of time (because the NV cannot preserve
         * the low-order bits anyway): we could just remember when
         * did we overflow and in the end just multiply value_nv by the
         * right amount of 8-tuples. */
        value_nv += (NV)digit;
        continue;
    }
    if (digit == ('_' - '0') && len && allow_underscores
        && (digit = s[1] - '0') && (digit >= 0 && digit <= 7))
        {
            --len;
            ++s;
            goto redo;
        }
    /* Allow \octal to work the DWIM way (that is, stop scanning
     * as soon as non-octal characters are seen, complain only iff
     * someone seems to want to use the digits eight and nine). */
    if (digit == 8 || digit == 9) {
        if (!(*flags & PERL_SCAN_SILENT_ILLDIGIT))
            warn("Illegal octal digit '%c' ignored", *s);
    }
    break;
}

if (   ( overflowed && value_nv > 4294967295.0)
#if UVSIZE > 4
    || (!overflowed && value > 0xffffffff  )
#endif
    ) {
    warn("Octal number > 037777777777 non-portable");
}
*len_p = s - start;
if (!overflowed) {
    *flags = 0;
    return value;
}
*flags = PERL_SCAN_GREATER_THAN_UV_MAX;
if (result)
    *result = value_nv;
return UV_MAX;
}
#endif
#endif

#define NEED_grok_number #define NEED_grok_numeric_radix #define NEED_grok_bin #define NEED_grok_hex #define NEED_grok_oct

UV grok_number(string) SV *string PREINIT: const char *pv; STRLEN len; CODE: pv = SvPV(string, len); if (!grok_number(pv, len, &RETVAL)) XSRETURN_UNDEF; OUTPUT: RETVAL

UV grok_bin(string) SV *string PREINIT: char *pv; I32 flags = 0; STRLEN len; CODE: pv = SvPV(string, len); RETVAL = grok_bin(pv, &len, &flags, NULL); OUTPUT: RETVAL

UV grok_hex(string) SV *string PREINIT: char *pv; I32 flags = 0; STRLEN len; CODE: pv = SvPV(string, len); RETVAL = grok_hex(pv, &len, &flags, NULL); OUTPUT: RETVAL

UV grok_oct(string) SV *string PREINIT: char *pv; I32 flags = 0; STRLEN len; CODE: pv = SvPV(string, len); RETVAL = grok_oct(pv, &len, &flags, NULL); OUTPUT: RETVAL

UV Perl_grok_number(string) SV *string PREINIT: const char *pv; STRLEN len; CODE: pv = SvPV(string, len); if (!Perl_grok_number(aTHX_ pv, len, &RETVAL)) XSRETURN_UNDEF; OUTPUT: RETVAL

UV Perl_grok_bin(string) SV *string PREINIT: char *pv; I32 flags = 0; STRLEN len; CODE: pv = SvPV(string, len); RETVAL = Perl_grok_bin(aTHX_ pv, &len, &flags, NULL); OUTPUT: RETVAL

UV Perl_grok_hex(string) SV *string PREINIT: char *pv; I32 flags = 0; STRLEN len; CODE: pv = SvPV(string, len); RETVAL = Perl_grok_hex(aTHX_ pv, &len, &flags, NULL); OUTPUT: RETVAL

UV Perl_grok_oct(string) SV *string PREINIT: char *pv; I32 flags = 0; STRLEN len; CODE: pv = SvPV(string, len); RETVAL = Perl_grok_oct(aTHX_ pv, &len, &flags, NULL); OUTPUT: RETVAL

is(&Devel::PPPort::grok_number("42"), 42); ok(!defined(&Devel::PPPort::grok_number("A"))); is(&Devel::PPPort::grok_bin("10000001"), 129); is(&Devel::PPPort::grok_hex("deadbeef"), 0xdeadbeef); is(&Devel::PPPort::grok_oct("377"), 255);

is(&Devel::PPPort::Perl_grok_number("42"), 42); ok(!defined(&Devel::PPPort::Perl_grok_number("A"))); is(&Devel::PPPort::Perl_grok_bin("10000001"), 129); is(&Devel::PPPort::Perl_grok_hex("deadbeef"), 0xdeadbeef); is(&Devel::PPPort::Perl_grok_oct("377"), 255);