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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Config\Builder;
use Symfony\Component\Config\Definition\ArrayNode;
use Symfony\Component\Config\Definition\BooleanNode;
use Symfony\Component\Config\Definition\ConfigurationInterface;
use Symfony\Component\Config\Definition\EnumNode;
use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
use Symfony\Component\Config\Definition\FloatNode;
use Symfony\Component\Config\Definition\IntegerNode;
use Symfony\Component\Config\Definition\NodeInterface;
use Symfony\Component\Config\Definition\PrototypedArrayNode;
use Symfony\Component\Config\Definition\ScalarNode;
use Symfony\Component\Config\Definition\VariableNode;
use Symfony\Component\Config\Loader\ParamConfigurator;
/**
* Generate ConfigBuilders to help create valid config.
*
* @author Tobias Nyholm <tobias.nyholm@gmail.com>
*/
class ConfigBuilderGenerator implements ConfigBuilderGeneratorInterface
{
/**
* @var ClassBuilder[]
*/
private $classes;
private $outputDir;
public function __construct(string $outputDir)
{
$this->outputDir = $outputDir;
}
/**
* @return \Closure that will return the root config class
*/
public function build(ConfigurationInterface $configuration): \Closure
{
$this->classes = [];
$rootNode = $configuration->getConfigTreeBuilder()->buildTree();
$rootClass = new ClassBuilder('Symfony\\Config', $rootNode->getName());
$path = $this->getFullPath($rootClass);
if (!is_file($path)) {
// Generate the class if the file not exists
$this->classes[] = $rootClass;
$this->buildNode($rootNode, $rootClass, $this->getSubNamespace($rootClass));
$rootClass->addImplements(ConfigBuilderInterface::class);
$rootClass->addMethod('getExtensionAlias', '
public function NAME(): string
{
return \'ALIAS\';
}', ['ALIAS' => $rootNode->getPath()]);
$this->writeClasses();
}
$loader = \Closure::fromCallable(function () use ($path, $rootClass) {
require_once $path;
$className = $rootClass->getFqcn();
return new $className();
});
return $loader;
}
private function getFullPath(ClassBuilder $class): string
{
$directory = $this->outputDir.\DIRECTORY_SEPARATOR.$class->getDirectory();
if (!is_dir($directory)) {
@mkdir($directory, 0777, true);
}
return $directory.\DIRECTORY_SEPARATOR.$class->getFilename();
}
private function writeClasses(): void
{
foreach ($this->classes as $class) {
$this->buildConstructor($class);
$this->buildToArray($class);
if ($class->getProperties()) {
$class->addProperty('_usedProperties', null, '[]');
}
$this->buildSetExtraKey($class);
file_put_contents($this->getFullPath($class), $class->build());
}
$this->classes = [];
}
private function buildNode(NodeInterface $node, ClassBuilder $class, string $namespace): void
{
if (!$node instanceof ArrayNode) {
throw new \LogicException('The node was expected to be an ArrayNode. This Configuration includes an edge case not supported yet.');
}
foreach ($node->getChildren() as $child) {
switch (true) {
case $child instanceof ScalarNode:
$this->handleScalarNode($child, $class);
break;
case $child instanceof PrototypedArrayNode:
$this->handlePrototypedArrayNode($child, $class, $namespace);
break;
case $child instanceof VariableNode:
$this->handleVariableNode($child, $class);
break;
case $child instanceof ArrayNode:
$this->handleArrayNode($child, $class, $namespace);
break;
default:
throw new \RuntimeException(sprintf('Unknown node "%s".', \get_class($child)));
}
}
}
private function handleArrayNode(ArrayNode $node, ClassBuilder $class, string $namespace): void
{
$childClass = new ClassBuilder($namespace, $node->getName());
$childClass->setAllowExtraKeys($node->shouldIgnoreExtraKeys());
$class->addRequire($childClass);
$this->classes[] = $childClass;
$property = $class->addProperty($node->getName(), $childClass->getFqcn());
$body = '
public function NAME(array $value = []): CLASS
{
if (null === $this->PROPERTY) {
$this->_usedProperties[\'PROPERTY\'] = true;
$this->PROPERTY = new CLASS($value);
} elseif ([] !== $value) {
throw new InvalidConfigurationException(\'The node created by "NAME()" has already been initialized. You cannot pass values the second time you call NAME().\');
}
return $this->PROPERTY;
}';
$class->addUse(InvalidConfigurationException::class);
$class->addMethod($node->getName(), $body, ['PROPERTY' => $property->getName(), 'CLASS' => $childClass->getFqcn()]);
$this->buildNode($node, $childClass, $this->getSubNamespace($childClass));
}
private function handleVariableNode(VariableNode $node, ClassBuilder $class): void
{
$comment = $this->getComment($node);
$property = $class->addProperty($node->getName());
$class->addUse(ParamConfigurator::class);
$body = '
/**
COMMENT * @return $this
*/
public function NAME($valueDEFAULT): self
{
$this->_usedProperties[\'PROPERTY\'] = true;
$this->PROPERTY = $value;
return $this;
}';
$class->addMethod($node->getName(), $body, ['PROPERTY' => $property->getName(), 'COMMENT' => $comment, 'DEFAULT' => $node->hasDefaultValue() ? ' = '.var_export($node->getDefaultValue(), true) : '']);
}
private function handlePrototypedArrayNode(PrototypedArrayNode $node, ClassBuilder $class, string $namespace): void
{
$name = $this->getSingularName($node);
$prototype = $node->getPrototype();
$methodName = $name;
$parameterType = $this->getParameterType($prototype);
if (null !== $parameterType || $prototype instanceof ScalarNode) {
$class->addUse(ParamConfigurator::class);
$property = $class->addProperty($node->getName());
if (null === $key = $node->getKeyAttribute()) {
// This is an array of values; don't use singular name
$body = '
/**
* @param ParamConfigurator|list<TYPE|ParamConfigurator> $value
* @return $this
*/
public function NAME($value): self
{
$this->_usedProperties[\'PROPERTY\'] = true;
$this->PROPERTY = $value;
return $this;
}';
$class->addMethod($node->getName(), $body, ['PROPERTY' => $property->getName(), 'TYPE' => '' === $parameterType ? 'mixed' : $parameterType]);
} else {
$body = '
/**
* @param ParamConfigurator|TYPE $value
* @return $this
*/
public function NAME(string $VAR, $VALUE): self
{
$this->_usedProperties[\'PROPERTY\'] = true;
$this->PROPERTY[$VAR] = $VALUE;
return $this;
}';
$class->addMethod($methodName, $body, ['PROPERTY' => $property->getName(), 'TYPE' => '' === $parameterType ? 'mixed' : $parameterType, 'VAR' => '' === $key ? 'key' : $key, 'VALUE' => 'value' === $key ? 'data' : 'value']);
}
return;
}
$childClass = new ClassBuilder($namespace, $name);
if ($prototype instanceof ArrayNode) {
$childClass->setAllowExtraKeys($prototype->shouldIgnoreExtraKeys());
}
$class->addRequire($childClass);
$this->classes[] = $childClass;
$property = $class->addProperty($node->getName(), $childClass->getFqcn().'[]');
if (null === $key = $node->getKeyAttribute()) {
$body = '
public function NAME(array $value = []): CLASS
{
$this->_usedProperties[\'PROPERTY\'] = true;
return $this->PROPERTY[] = new CLASS($value);
}';
$class->addMethod($methodName, $body, ['PROPERTY' => $property->getName(), 'CLASS' => $childClass->getFqcn()]);
} else {
$body = '
public function NAME(string $VAR, array $VALUE = []): CLASS
{
if (!isset($this->PROPERTY[$VAR])) {
$this->_usedProperties[\'PROPERTY\'] = true;
return $this->PROPERTY[$VAR] = new CLASS($VALUE);
}
if ([] === $VALUE) {
return $this->PROPERTY[$VAR];
}
throw new InvalidConfigurationException(\'The node created by "NAME()" has already been initialized. You cannot pass values the second time you call NAME().\');
}';
$class->addUse(InvalidConfigurationException::class);
$class->addMethod($methodName, $body, ['PROPERTY' => $property->getName(), 'CLASS' => $childClass->getFqcn(), 'VAR' => '' === $key ? 'key' : $key, 'VALUE' => 'value' === $key ? 'data' : 'value']);
}
$this->buildNode($prototype, $childClass, $namespace.'\\'.$childClass->getName());
}
private function handleScalarNode(ScalarNode $node, ClassBuilder $class): void
{
$comment = $this->getComment($node);
$property = $class->addProperty($node->getName());
$class->addUse(ParamConfigurator::class);
$body = '
/**
COMMENT * @return $this
*/
public function NAME($value): self
{
$this->_usedProperties[\'PROPERTY\'] = true;
$this->PROPERTY = $value;
return $this;
}';
$class->addMethod($node->getName(), $body, ['PROPERTY' => $property->getName(), 'COMMENT' => $comment]);
}
private function getParameterType(NodeInterface $node): ?string
{
if ($node instanceof BooleanNode) {
return 'bool';
}
if ($node instanceof IntegerNode) {
return 'int';
}
if ($node instanceof FloatNode) {
return 'float';
}
if ($node instanceof EnumNode) {
return '';
}
if ($node instanceof PrototypedArrayNode && $node->getPrototype() instanceof ScalarNode) {
// This is just an array of variables
return 'array';
}
if ($node instanceof VariableNode) {
// mixed
return '';
}
return null;
}
private function getComment(VariableNode $node): string
{
$comment = '';
if ('' !== $info = (string) $node->getInfo()) {
$comment .= ' * '.$info."\n";
}
foreach ((array) ($node->getExample() ?? []) as $example) {
$comment .= ' * @example '.$example."\n";
}
if ('' !== $default = $node->getDefaultValue()) {
$comment .= ' * @default '.(null === $default ? 'null' : var_export($default, true))."\n";
}
if ($node instanceof EnumNode) {
$comment .= sprintf(' * @param ParamConfigurator|%s $value', implode('|', array_map(function ($a) {
return var_export($a, true);
}, $node->getValues())))."\n";
} else {
$parameterType = $this->getParameterType($node);
if (null === $parameterType || '' === $parameterType) {
$parameterType = 'mixed';
}
$comment .= ' * @param ParamConfigurator|'.$parameterType.' $value'."\n";
}
if ($node->isDeprecated()) {
$comment .= ' * @deprecated '.$node->getDeprecation($node->getName(), $node->getParent()->getName())['message']."\n";
}
return $comment;
}
/**
* Pick a good singular name.
*/
private function getSingularName(PrototypedArrayNode $node): string
{
$name = $node->getName();
if ('s' !== substr($name, -1)) {
return $name;
}
$parent = $node->getParent();
$mappings = $parent instanceof ArrayNode ? $parent->getXmlRemappings() : [];
foreach ($mappings as $map) {
if ($map[1] === $name) {
$name = $map[0];
break;
}
}
return $name;
}
private function buildToArray(ClassBuilder $class): void
{
$body = '$output = [];';
foreach ($class->getProperties() as $p) {
$code = '$this->PROPERTY';
if (null !== $p->getType()) {
if ($p->isArray()) {
$code = 'array_map(function ($v) { return $v->toArray(); }, $this->PROPERTY)';
} else {
$code = '$this->PROPERTY->toArray()';
}
}
$body .= strtr('
if (isset($this->_usedProperties[\'PROPERTY\'])) {
$output[\'ORG_NAME\'] = '.$code.';
}', ['PROPERTY' => $p->getName(), 'ORG_NAME' => $p->getOriginalName()]);
}
$extraKeys = $class->shouldAllowExtraKeys() ? ' + $this->_extraKeys' : '';
$class->addMethod('toArray', '
public function NAME(): array
{
'.$body.'
return $output'.$extraKeys.';
}');
}
private function buildConstructor(ClassBuilder $class): void
{
$body = '';
foreach ($class->getProperties() as $p) {
$code = '$value[\'ORG_NAME\']';
if (null !== $p->getType()) {
if ($p->isArray()) {
$code = 'array_map(function ($v) { return new '.$p->getType().'($v); }, $value[\'ORG_NAME\'])';
} else {
$code = 'new '.$p->getType().'($value[\'ORG_NAME\'])';
}
}
$body .= strtr('
if (array_key_exists(\'ORG_NAME\', $value)) {
$this->_usedProperties[\'PROPERTY\'] = true;
$this->PROPERTY = '.$code.';
unset($value[\'ORG_NAME\']);
}
', ['PROPERTY' => $p->getName(), 'ORG_NAME' => $p->getOriginalName()]);
}
if ($class->shouldAllowExtraKeys()) {
$body .= '
$this->_extraKeys = $value;
';
} else {
$body .= '
if ([] !== $value) {
throw new InvalidConfigurationException(sprintf(\'The following keys are not supported by "%s": \', __CLASS__).implode(\', \', array_keys($value)));
}';
$class->addUse(InvalidConfigurationException::class);
}
$class->addMethod('__construct', '
public function __construct(array $value = [])
{
'.$body.'
}');
}
private function buildSetExtraKey(ClassBuilder $class): void
{
if (!$class->shouldAllowExtraKeys()) {
return;
}
$class->addUse(ParamConfigurator::class);
$class->addProperty('_extraKeys');
$class->addMethod('set', '
/**
* @param ParamConfigurator|mixed $value
* @return $this
*/
public function NAME(string $key, $value): self
{
$this->_extraKeys[$key] = $value;
return $this;
}');
}
private function getSubNamespace(ClassBuilder $rootClass): string
{
return sprintf('%s\\%s', $rootClass->getNamespace(), substr($rootClass->getName(), 0, -6));
}
}
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