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Merged
merged 3 commits into from
Jul 15, 2025
Merged

Arginfo: add and use known strings for attributes #19075

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adc9bcf
gen_stub: add StringBuilder class for managing known strings
DanielEScherzer Jul 8, 2025
6a43e96
gen_stub: use StringBuilder for attribute strings
DanielEScherzer Jul 8, 2025
99ec395
Arginfo: add and use known strings for attribute values
DanielEScherzer Jul 8, 2025
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gen_stub: add StringBuilder class for managing known strings 
Split out from the PropertyInfo class so that known strings can also be used
for attributes in a follow-up commit.
  • Loading branch information
@DanielEScherzer
DanielEScherzer committed Jul 8, 2025
commit adc9bcf9b1dbe857935434df01f815305ebd7269
138 changes: 75 additions & 63 deletions build/gen_stub.php
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Original file line number Diff line number Diff line change
Expand Up @@ -2955,14 +2955,7 @@ protected function addModifiersToFieldSynopsis(DOMDocument $doc, DOMElement $fie
}
}

class PropertyInfo extends VariableLike
{
private /* readonly */ int $classFlags;
public /* readonly */ PropertyName $name;
private /* readonly */ ?Expr $defaultValue;
private /* readonly */ ?string $defaultValueString;
private /* readonly */ bool $isDocReadonly;
private /* readonly */ bool $isVirtual;
class StringBuilder {

// Map possible variable names to the known string constant, see
// ZEND_KNOWN_STRINGS
Expand Down Expand Up @@ -3067,6 +3060,75 @@ class PropertyInfo extends VariableLike
"clone" => "ZEND_STR_CLONE",
];

/**
* Get an array of three strings:
* - declaration of zend_string, if needed, or empty otherwise
* - usage of that zend_string, or usage with ZSTR_KNOWN()
* - freeing the zend_string, if needed
*
* @param string $varName
* @param string $strContent
* @param ?int $minPHPCompatibility
* @return string[]
*/
public static function getString(
string $varName,
string $content,
?int $minPHPCompatibility
): array {
// Generally strings will not be known
$result = [
"\tzend_string *$varName = zend_string_init(\"$content\", sizeof(\"$content\") - 1, 1);\n",
$varName,
"\tzend_string_release($varName);\n"
];
// If not set, use the current latest version
$allVersions = ALL_PHP_VERSION_IDS;
$minPhp = $minPHPCompatibility ?? end($allVersions);
if ($minPhp < PHP_80_VERSION_ID) {
// No known strings in 7.0
return $result;
}
$include = self::PHP_80_KNOWN;
switch ($minPhp) {
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Why no match?

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Because gen_stub supports running on PHP 7.4, I have a todo to update that eventually

case PHP_85_VERSION_ID:
$include = array_merge($include, self::PHP_85_KNOWN);
// Intentional fall through

case PHP_84_VERSION_ID:
$include = array_merge($include, self::PHP_84_KNOWN);
// Intentional fall through

case PHP_83_VERSION_ID:
case PHP_82_VERSION_ID:
$include = array_merge($include, self::PHP_82_KNOWN);
// Intentional fall through

case PHP_81_VERSION_ID:
$include = array_merge($include, self::PHP_81_KNOWN);
break;
}
if (array_key_exists($content, $include)) {
$knownStr = $include[$content];
return [
'',
"ZSTR_KNOWN($knownStr)",
'',
];
}
return $result;
}
}

class PropertyInfo extends VariableLike
{
private /* readonly */ int $classFlags;
public /* readonly */ PropertyName $name;
private /* readonly */ ?Expr $defaultValue;
private /* readonly */ ?string $defaultValueString;
private /* readonly */ bool $isDocReadonly;
private /* readonly */ bool $isVirtual;

/**
* @param AttributeInfo[] $attributes
*/
Expand Down Expand Up @@ -3147,7 +3209,11 @@ public function getDeclaration(array $allConstInfos): string {
$code .= $defaultValue->initializeZval($zvalName);
}

[$stringInit, $nameCode, $stringRelease] = $this->getString($propertyName);
[$stringInit, $nameCode, $stringRelease] = StringBuilder::getString(
"property_{$propertyName}_name",
$propertyName,
$this->phpVersionIdMinimumCompatibility
);
$code .= $stringInit;

if ($this->exposedDocComment) {
Expand Down Expand Up @@ -3182,60 +3248,6 @@ public function getDeclaration(array $allConstInfos): string {
return $code;
}

/**
* Get an array of three strings:
* - declaration of zend_string, if needed, or empty otherwise
* - usage of that zend_string, or usage with ZSTR_KNOWN()
* - freeing the zend_string, if needed
*
* @param string $propName
* @return string[]
*/
private function getString(string $propName): array {
// Generally strings will not be known
$nameCode = "property_{$propName}_name";
$result = [
"\tzend_string *$nameCode = zend_string_init(\"$propName\", sizeof(\"$propName\") - 1, 1);\n",
$nameCode,
"\tzend_string_release($nameCode);\n"
];
// If not set, use the current latest version
$allVersions = ALL_PHP_VERSION_IDS;
$minPhp = $this->phpVersionIdMinimumCompatibility ?? end($allVersions);
if ($minPhp < PHP_80_VERSION_ID) {
// No known strings in 7.0
return $result;
}
$include = self::PHP_80_KNOWN;
switch ($minPhp) {
case PHP_85_VERSION_ID:
$include = array_merge($include, self::PHP_85_KNOWN);
// Intentional fall through

case PHP_84_VERSION_ID:
$include = array_merge($include, self::PHP_84_KNOWN);
// Intentional fall through

case PHP_83_VERSION_ID:
case PHP_82_VERSION_ID:
$include = array_merge($include, self::PHP_82_KNOWN);
// Intentional fall through

case PHP_81_VERSION_ID:
$include = array_merge($include, self::PHP_81_KNOWN);
break;
}
if (array_key_exists($propName, $include)) {
$knownStr = $include[$propName];
return [
'',
"ZSTR_KNOWN($knownStr)",
'',
];
}
return $result;
}

/**
* @return array<int, string[]>
*/
Expand Down
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