public function parse(DateTimeParseContext $context, $text, $position)
{
$length = strlen($text);
if ($position === $length) {
return ~$position;
}
if ($position < 0 || $position >= $length) {
throw new \OutOfRangeException();
}
$sign = $text[$position];
$negative = false;
$positive = false;
if ($sign === $context->getDecimalStyle()->getPositiveSign()) {
if ($this->signStyle->parse(true, $context->isStrict(), $this->minWidth === $this->maxWidth) === false) {
return ~$position;
}
$positive = true;
$position++;
} else {
if ($sign === $context->getDecimalStyle()->getNegativeSign()) {
if ($this->signStyle->parse(false, $context->isStrict(), $this->minWidth === $this->maxWidth) === false) {
return ~$position;
}
$negative = true;
$position++;
} else {
if ($this->signStyle == SignStyle::ALWAYS() && $context->isStrict()) {
return ~$position;
}
}
}
$effMinWidth = $context->isStrict() || $this->isFixedWidth($context) ? $this->minWidth : 1;
$minEndPos = $position + $effMinWidth;
if ($minEndPos > $length) {
return ~$position;
}
$effMaxWidth = ($context->isStrict() || $this->isFixedWidth($context) ? $this->maxWidth : 9) + Math::max($this->subsequentWidth, 0);
$total = 0;
$totalBig = null;
$pos = $position;
for ($pass = 0; $pass < 2; $pass++) {
$maxEndPos = Math::min($pos + $effMaxWidth, $length);
while ($pos < $maxEndPos) {
$ch = $text[$pos++];
$digit = $context->getDecimalStyle()->convertToDigit($ch);
if ($digit < 0) {
$pos--;
if ($pos < $minEndPos) {
return ~$position;
// need at least min width digits
}
break;
}
if ($pos - $position > 18) {
if ($totalBig === null) {
$totalBig = \gmp_init($total);
}
$totalBig = \gmp_add(\gmp_mul($totalBig, "10"), \gmp_init($digit));
} else {
$total = $total * 10 + $digit;
}
}
if ($this->subsequentWidth > 0 && $pass === 0) {
// re-parse now we know the correct width
$parseLen = $pos - $position;
$effMaxWidth = Math::max($effMinWidth, $parseLen - $this->subsequentWidth);
$pos = $position;
$total = 0;
$totalBig = null;
} else {
break;
}
}
if ($negative) {
if ($totalBig !== null) {
if (\gmp_cmp($totalBig, "0") === 0 && $context->isStrict()) {
return ~($position - 1);
// minus zero not allowed
}
$totalBig = \gmp_neg($totalBig);
} else {
if ($total === 0 && $context->isStrict()) {
return ~($position - 1);
// minus zero not allowed
}
$total = -$total;
}
} else {
if ($this->signStyle == SignStyle::EXCEEDS_PAD() && $context->isStrict()) {
$parseLen = $pos - $position;
if ($positive) {
if ($parseLen <= $this->minWidth) {
return ~($position - 1);
// '+' only parsed if minWidth exceeded
}
} else {
if ($parseLen > $this->minWidth) {
return ~$position;
// '+' must be parsed if minWidth exceeded
}
}
}
}
if ($totalBig !== null) {
if (gmp_cmp($totalBig, "-9223372036854775808") < 0 || gmp_cmp($totalBig, "9223372036854775807") > 0) {
// overflow, parse 1 less digit
$totalBig = gmp_div($totalBig, "10");
$pos--;
}
return $this->setValue($context, gmp_intval($totalBig), $position, $pos);
}
return $this->setValue($context, $total, $position, $pos);
}
public function parse(DateTimeParseContext $context, $text, $position)
{
$effectiveMin = $context->isStrict() ? $this->minWidth : 0;
$effectiveMax = $context->isStrict() ? $this->maxWidth : 9;
$length = strlen($text);
if ($position === $length) {
// valid if whole field is optional, invalid if minimum width
return $effectiveMin > 0 ? ~$position : $position;
}
if ($this->decimalPoint) {
if ($text[$position] != $context->getDecimalStyle()->getDecimalSeparator()) {
// valid if whole field is optional, invalid if minimum width
return $effectiveMin > 0 ? ~$position : $position;
}
$position++;
}
$minEndPos = $position + $effectiveMin;
if ($minEndPos > $length) {
return ~$position;
// need at least min width digits
}
$maxEndPos = Math::min($position + $effectiveMax, $length);
$total = 0;
// can use int because we are only parsing up to 9 digits
$pos = $position;
while ($pos < $maxEndPos) {
$ch = $text[$pos++];
$digit = $context->getDecimalStyle()->convertToDigit($ch);
if ($digit < 0) {
if ($pos < $minEndPos) {
return ~$position;
// need at least min width digits
}
$pos--;
break;
}
$total = $total * 10 + $digit;
}
$div = 1 . str_repeat('0', 9 - ($pos - $position));
$fraction = gmp_mul($total, $div);
$value = $this->convertFromFraction($fraction);
return $context->setParsedField($this->field, $value, $position, $pos);
}
