public function hash()
{
$hasher = hash_init('sha256');
hash_update($hasher, $this->kind());
hash_update($hasher, $this->name);
hash_update($hasher, hashComplex($this->t_args));
return hash_final($hasher);
}
public function hash()
{
if ($this->hash === null) {
$hasher = hash_init('sha256');
hash_update($hasher, $this->name);
hash_update($hasher, '(');
hash_update($hasher, hashComplex($this->args));
hash_update($hasher, ')');
$this->hash = hash_final($hasher);
}
return $this->hash;
}
function hashComplex($val)
{
$hasher = hash_init('sha256');
if (is_array($val)) {
hash_update($hasher, '[');
// Ensure array is sorted by keys
ksort($val);
foreach ($val as $name => $v) {
hash_update($hasher, $name);
hash_update($hasher, '=>');
hash_update($hasher, hashComplex($v));
}
hash_update($hasher, ']');
} else {
if (is_gla($val)) {
hash_update($hasher, 'gla');
hash_update($hasher, $val->hash());
} else {
if (is_gf($val)) {
hash_update($hasher, 'gf');
hash_update($hasher, $val->hash());
} else {
if (is_gt($val)) {
hash_update($hasher, 'gt');
hash_update($hasher, $val->hash());
} else {
if (is_gist($val)) {
hash_update($hasher, 'gist');
hash_update($hasher, $val->hash());
} else {
if (is_gi($val)) {
hash_update($hasher, 'gi');
hash_update($hasher, $val->hash());
} else {
if (is_datatype($val)) {
hash_update($hasher, 'datatype');
hash_update($hasher, $val->hash());
} else {
if (is_functor($val)) {
hash_update($hasher, 'functor');
hash_update($hasher, $val->hash());
} else {
if (is_identifier($val)) {
hash_update($hasher, 'identifier');
hash_update($hasher, $val->hash());
} else {
if (is_attribute($val)) {
hash_update($hasher, 'attribute');
hash_update($hasher, strval($val));
} else {
if (is_int($val) || is_float($val) || is_string($val) || is_bool($val)) {
hash_update($hasher, gettype($val));
hash_update($hasher, $val);
} else {
if (is_null($val)) {
hash_update($hasher, 'null');
} else {
$valType = is_object($val) ? get_class($val) : gettype($val);
grokit_logic_error('Unable to hash unknown type ' . $valType);
}
}
}
}
}
}
}
}
}
}
}
}
return hash_final($hasher);
}
public static function HashFunctionSignature($name, array $args, array $targs = [])
{
$hasher = hash_init('sha256');
hash_update($hasher, \strtoupper($name));
// Hash arguments
hash_update($hasher, '(');
foreach ($args as $n => $type) {
hash_update($hasher, $n);
hash_update($hasher, $type->hash());
}
hash_update($hasher, ')');
// If there are any template arguments, hash them too.
if (count($targs) > 0) {
hash_update($hasher, '<');
hash_update($hasher, hashComplex($targs));
hash_update($hasher, '>');
}
return hash_final($hasher);
}