public function getFieldValue()
{
$dirs = $this->getDirectives();
$dirs['no-store'] = $this->noStore;
$dirs['no-cache'] = $this->noCache;
$dirs['max-age'] = $this->maxAge;
$dirs['s-max-age'] = $this->sMaxAge;
$dirs['must-revalidate'] = $this->mustRevalidate;
$dirs['proxy-revalidate'] = $this->proxyRevalidate;
return Directives::getDirectiveString($dirs, ',');
}
function yay_parse(string $source, string $salt) : string
{
start:
if ($gc = gc_enabled()) {
gc_disable();
}
$ts = TokenStream::fromSource($source);
$directives = new Directives();
$cycle = new Cycle($salt);
declaration:
$from = $ts->index();
if (!($token = $ts->current())) {
goto end;
}
if ($token->contains('macro')) {
$declaration = $token;
$ts->next();
goto tags;
}
goto any;
tags:
$tags = [];
while (($token = $ts->current()) && preg_match('/^·\\w+$/', (string) $token)) {
$tags[] = $token;
$ts->next();
}
pattern:
$index = $ts->index();
$pattern = [];
$level = 1;
if (!($token = $ts->current()) || !$token->is('{')) {
goto any;
}
$ts->next();
while (($token = $ts->current()) && ($level += LAYER_DELIMITERS[$token->type()] ?? 0)) {
$pattern[] = $token;
$token = $ts->step();
}
if (!$token || !$token->is('}')) {
$ts->jump($index);
(new Error(new Expected(new Token('}')), $ts->current(), $ts->last()))->halt();
}
$ts->next();
__:
// >>
$index = $ts->index();
$operator = '>>';
$max = strlen($operator);
$buffer = '';
while (mb_strlen($buffer) <= $max && ($token = $ts->current())) {
$buffer .= (string) $token;
$ts->step();
if ($buffer === $operator) {
$ts->skip(T_WHITESPACE);
goto expansion;
}
}
$ts->jump($index);
(new Error(new Expected(new Token(token::OPERATOR, $operator)), $ts->current(), $ts->last()))->halt();
expansion:
$index = $ts->index();
$expansion = [];
$level = 1;
if (!($token = $ts->current()) || !$token->is('{')) {
$ts->jump($index);
(new Error(new Expected(new Token('}')), $ts->current(), $ts->last()))->halt();
}
$ts->next();
while (($token = $ts->current()) && ($level += LAYER_DELIMITERS[$token->type()] ?? 0)) {
$expansion[] = $token;
$token = $ts->step();
}
if (!$token || !$token->is('}')) {
$ts->jump($index);
(new Error(new Expected(new Token('}')), $ts->current(), $ts->last()))->halt();
}
// optional ';'
$token = $ts->next();
if ($token->is(';')) {
$ts->next();
}
// cleanup
$ts->unskip(...TokenStream::SKIPPABLE);
$ts->skip(T_WHITESPACE);
$ts->extract($from, $ts->index());
$directives->add(new Macro($declaration->line(), $tags, $pattern, $expansion, $cycle));
goto declaration;
any:
if ($token) {
$directives->apply($ts);
$ts->next();
}
goto declaration;
end:
$expansion = (string) $ts;
if ($gc) {
gc_enable();
}
return $expansion;
}