2019-03-01 14:57:10 +01:00
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<?php
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namespace Psalm\Internal\Provider;
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use PhpParser;
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use Psalm\Context;
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use Psalm\CodeLocation;
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use Psalm\StatementsSource;
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use Psalm\Plugin\Hook\FunctionParamsProviderInterface;
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2019-06-26 22:52:29 +02:00
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use function version_compare;
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use const PHP_VERSION;
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use function strtolower;
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2019-03-01 14:57:10 +01:00
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class FunctionParamsProvider
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{
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/**
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* @var array<
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* string,
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* array<\Closure(
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* StatementsSource,
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* string,
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* array<PhpParser\Node\Arg>,
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* ?Context=,
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* ?CodeLocation=
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* ) : ?array<int, \Psalm\Storage\FunctionLikeParameter>>
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* >
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*/
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private static $handlers = [];
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public function __construct()
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{
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self::$handlers = [];
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}
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/**
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* @param class-string<FunctionParamsProviderInterface> $class
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* @psalm-suppress PossiblyUnusedParam
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* @return void
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*/
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public function registerClass(string $class)
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{
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if (version_compare(PHP_VERSION, '7.1.0') >= 0) {
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/**
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* @psalm-suppress UndefinedMethod
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* @var \Closure
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*/
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$callable = \Closure::fromCallable([$class, 'getFunctionParams']);
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} else {
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$callable = (new \ReflectionClass($class))->getMethod('getFunctionParams')->getClosure(new $class);
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if (!$callable) {
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throw new \UnexpectedValueException('Callable must not be null');
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}
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}
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foreach ($class::getFunctionIds() as $function_id) {
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/** @psalm-suppress MixedTypeCoercion */
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$this->registerClosure($function_id, $callable);
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}
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}
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/**
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* @param \Closure(
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* StatementsSource,
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* string,
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* array<PhpParser\Node\Arg>,
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* ?Context=,
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* ?CodeLocation=
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* ) : ?array<int, \Psalm\Storage\FunctionLikeParameter> $c
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*
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* @return void
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*/
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public function registerClosure(string $fq_classlike_name, \Closure $c)
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{
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self::$handlers[strtolower($fq_classlike_name)][] = $c;
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}
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public function has(string $fq_classlike_name) : bool
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{
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return isset(self::$handlers[strtolower($fq_classlike_name)]);
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}
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/**
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* @param array<PhpParser\Node\Arg> $call_args
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* @return ?array<int, \Psalm\Storage\FunctionLikeParameter>
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*/
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public function getFunctionParams(
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StatementsSource $statements_source,
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string $function_id,
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array $call_args,
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Context $context = null,
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CodeLocation $code_location = null
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) {
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foreach (self::$handlers[strtolower($function_id)] as $class_handler) {
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$result = $class_handler(
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$statements_source,
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$function_id,
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$call_args,
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$context,
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$code_location
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);
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if ($result) {
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return $result;
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}
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}
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return null;
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}
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}
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