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<?php |
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namespace TheCodingMachine\Yaco; |
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use Interop\Container\Definition\DefinitionInterface; |
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use Interop\Container\Definition\DefinitionProviderInterface; |
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use TheCodingMachine\Yaco\Definition\DumpableInterface; |
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use TheCodingMachine\Yaco\Definition\InlineEntryInterface; |
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/** |
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* A class that generates a PHP class (a container) from definitions. |
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*/ |
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class Compiler |
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{ |
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/** |
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* @var DefinitionInterface[] |
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*/ |
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private $definitions = []; |
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/** |
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* @var DumpableInterface[] |
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*/ |
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private $dumpableDefinitions = []; |
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/** |
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* The object in charge of converting container-interop definitions to our internal standard. |
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* |
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* @var DefinitionConverterInterface |
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*/ |
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private $converter; |
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/** |
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* @param DefinitionConverterInterface $converter The object in charge of converting container-interop definitions to our internal standard. |
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*/ |
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public function __construct(DefinitionConverterInterface $converter = null) |
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{ |
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if ($converter === null) { |
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$converter = new DefinitionConverter(); |
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} |
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$this->converter = $converter; |
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} |
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/** |
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* Adds a definition to the list of definitions managed by this compiler. |
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* |
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* @param string $identifier |
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* @param DefinitionInterface $definition |
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*/ |
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public function addDefinition($identifier, DefinitionInterface $definition) |
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{ |
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$this->definitions[$identifier] = $definition; |
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unset($this->dumpableDefinitions[$identifier]); |
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} |
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/** |
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* Registers a new definition provider. |
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* |
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* @param DefinitionProviderInterface $definitionProvider |
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*/ |
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public function register(DefinitionProviderInterface $definitionProvider) |
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{ |
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foreach ($definitionProvider->getDefinitions() as $identifier => $definition) { |
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$this->addDefinition($identifier, $definition); |
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} |
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} |
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/** |
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* Adds a dumpable definition to the list of definitions managed by this compiler. |
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* Note: a "dumpable" definition is a definition represented in Yaco internal format. |
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* |
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* @param DumpableInterface $dumpableDefinition |
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*/ |
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public function addDumpableDefinition(DumpableInterface $dumpableDefinition) |
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{ |
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$this->dumpableDefinitions[$dumpableDefinition->getIdentifier()] = $dumpableDefinition; |
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unset($this->definitions[$dumpableDefinition->getIdentifier()]); |
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} |
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/** |
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* @param string $identifier |
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* |
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* @return bool |
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*/ |
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public function has($identifier) |
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{ |
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return isset($this->dumpableDefinitions[$identifier]) || isset($this->definitions[$identifier]); |
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} |
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/** |
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* Returns the dumpable definition matching the $identifier. |
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* |
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* @param string $identifier |
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* |
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* @return Definition\AliasDefinition|DumpableInterface|Definition\FactoryCallDefinition|Definition\ObjectDefinition|Definition\ParameterDefinition |
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* |
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* @throws CompilerException |
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*/ |
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public function getDumpableDefinition($identifier) |
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{ |
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if (isset($this->dumpableDefinitions[$identifier])) { |
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return $this->dumpableDefinitions[$identifier]; |
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} elseif (isset($this->definitions[$identifier])) { |
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return $this->converter->convert($identifier, $this->definitions[$identifier]); |
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} else { |
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throw new CompilerException(sprintf('Unknown identifier in compiler: "%s"', $identifier)); |
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} |
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} |
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/** |
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* @param string $className |
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* |
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* @return string |
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*/ |
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public function compile($className) |
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{ |
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$classCode = <<<EOF |
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<?php |
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%s |
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use Mouf\Picotainer\Picotainer; |
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class %s extends Picotainer |
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{ |
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public function __construct(ContainerInterface \$delegateLookupContainer = null) { |
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parent::__construct([ |
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%s ], \$delegateLookupContainer); |
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\$this->objects = [ |
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%s ]; |
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} |
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} |
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EOF; |
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list($shortClassName, $namespaceLine) = $this->splitFQCN($className); |
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$closuresCode = ''; |
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$parametersCode = ''; |
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$convertedDefinitions = []; |
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// Let's merge dumpable definitions with standard definitions. |
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foreach ($this->definitions as $identifier => $definition) { |
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$convertedDefinitions[$identifier] = $this->converter->convert($identifier, $definition); |
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} |
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$allDefinitions = $convertedDefinitions + $this->dumpableDefinitions; |
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foreach ($allDefinitions as $identifier => $definition) { |
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$inlineEntry = $definition->toPhpCode('$container', ['$container']); |
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if ($inlineEntry->isLazilyEvaluated()) { |
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$closuresCode .= ' '.var_export($identifier, true).' => '.$this->getClosureCode($inlineEntry).",\n"; |
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} else { |
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$parametersCode .= ' '.var_export($identifier, true).' => '.$this->getParametersCode($inlineEntry).",\n"; |
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} |
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} |
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return sprintf($classCode, $namespaceLine, $shortClassName, $closuresCode, $parametersCode); |
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} |
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private function splitFQCN($className) |
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{ |
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$pos = strrpos($className, '\\'); |
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if ($pos !== false) { |
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$shortClassName = substr($className, $pos + 1); |
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$namespaceLine = 'namespace '.substr($className, 0, $pos).';'; |
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} else { |
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$shortClassName = $className; |
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$namespaceLine = ''; |
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} |
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return [ |
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$shortClassName, |
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$namespaceLine, |
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]; |
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} |
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private function getParametersCode(InlineEntryInterface $inlineEntry) |
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{ |
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if (!empty($inlineEntry->getStatements())) { |
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throw new CompilerException('An entry that contains parameters (not lazily loaded) cannot return statements.'); |
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} |
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return $inlineEntry->getExpression(); |
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} |
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private function getClosureCode(InlineEntryInterface $inlineEntry) |
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{ |
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$code = $inlineEntry->getStatements(); |
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$code .= 'return '.$inlineEntry->getExpression().";\n"; |
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return sprintf("function(\$container) {\n%s}", $code); |
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} |
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} |
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thecodingmachine /
yaco
