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