mirror of
https://github.com/danog/psalm.git
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201 lines
6.0 KiB
PHP
201 lines
6.0 KiB
PHP
<?php
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namespace Psalm\Internal\Analyzer;
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use PhpParser;
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use PhpParser\Node\Stmt\Namespace_;
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use Psalm\Context;
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use Psalm\StatementsSource;
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use Psalm\Type;
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use function implode;
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use function strtolower;
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use function trim;
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use function strpos;
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use function preg_replace;
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/**
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* @internal
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*/
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class NamespaceAnalyzer extends SourceAnalyzer implements StatementsSource
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{
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use CanAlias;
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/**
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* @var FileAnalyzer
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*/
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protected $source;
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/**
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* @var Namespace_
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*/
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private $namespace;
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/**
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* @var string
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*/
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private $namespace_name;
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/**
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* A lookup table for public namespace constants
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*
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* @var array<string, array<string, Type\Union>>
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*/
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protected static $public_namespace_constants = [];
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/**
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* @param Namespace_ $namespace
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* @param FileAnalyzer $source
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*/
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public function __construct(Namespace_ $namespace, FileAnalyzer $source)
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{
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$this->source = $source;
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$this->namespace = $namespace;
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$this->namespace_name = $this->namespace->name ? implode('\\', $this->namespace->name->parts) : '';
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}
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/**
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* @return void
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*/
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public function collectAnalyzableInformation()
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{
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$leftover_stmts = [];
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if (!isset(self::$public_namespace_constants[$this->namespace_name])) {
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self::$public_namespace_constants[$this->namespace_name] = [];
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}
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$codebase = $this->getCodebase();
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foreach ($this->namespace->stmts as $stmt) {
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if ($stmt instanceof PhpParser\Node\Stmt\ClassLike) {
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$this->collectAnalyzableClassLike($stmt);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Use_) {
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$this->visitUse($stmt);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\GroupUse) {
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$this->visitGroupUse($stmt);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Const_) {
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foreach ($stmt->consts as $const) {
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self::$public_namespace_constants[$this->namespace_name][$const->name->name] = Type::getMixed();
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}
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$leftover_stmts[] = $stmt;
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} else {
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$leftover_stmts[] = $stmt;
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}
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}
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if ($leftover_stmts) {
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$statements_analyzer = new StatementsAnalyzer($this, new \Psalm\Internal\Provider\NodeDataProvider());
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$context = new Context();
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$context->is_global = true;
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$context->defineGlobals();
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$context->collect_exceptions = $codebase->config->check_for_throws_in_global_scope;
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$statements_analyzer->analyze($leftover_stmts, $context);
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$file_context = $this->source->context;
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if ($file_context) {
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$file_context->mergeExceptions($context);
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}
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}
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}
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/**
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* @param PhpParser\Node\Stmt\ClassLike $stmt
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*
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* @return void
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*/
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public function collectAnalyzableClassLike(PhpParser\Node\Stmt\ClassLike $stmt)
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{
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if (!$stmt->name) {
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throw new \UnexpectedValueException('Did not expect anonymous class here');
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}
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$fq_class_name = Type::getFQCLNFromString($stmt->name->name, $this->getAliases());
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if ($stmt instanceof PhpParser\Node\Stmt\Class_) {
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$this->source->addNamespacedClassAnalyzer(
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$fq_class_name,
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new ClassAnalyzer($stmt, $this, $fq_class_name)
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);
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} elseif ($stmt instanceof PhpParser\Node\Stmt\Interface_) {
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$this->source->addNamespacedInterfaceAnalyzer(
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$fq_class_name,
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new InterfaceAnalyzer($stmt, $this, $fq_class_name)
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);
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}
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}
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/**
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* @return string
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*/
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public function getNamespace()
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{
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return $this->namespace_name;
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}
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/**
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* @param string $const_name
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* @param Type\Union $const_type
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*
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* @return void
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*/
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public function setConstType($const_name, Type\Union $const_type)
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{
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self::$public_namespace_constants[$this->namespace_name][$const_name] = $const_type;
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}
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/**
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* @param string $namespace_name
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* @param mixed $visibility
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*
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* @return array<string,Type\Union>
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*/
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public static function getConstantsForNamespace($namespace_name, $visibility)
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{
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// @todo this does not allow for loading in namespace constants not already defined in the current sweep
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if (!isset(self::$public_namespace_constants[$namespace_name])) {
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self::$public_namespace_constants[$namespace_name] = [];
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}
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if ($visibility === \ReflectionProperty::IS_PUBLIC) {
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return self::$public_namespace_constants[$namespace_name];
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}
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throw new \InvalidArgumentException('Given $visibility not supported');
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}
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public function getFileAnalyzer() : FileAnalyzer
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{
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return $this->source;
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}
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/**
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* @param string $namespace Generally a namespace, but may also be a fully qualified class name (FQCN)_.
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* @param string $className Generally a FQCN, but may be a FQCN
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*
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* Returns true if $className is the same as, or starts with $namespace, in a case-insensitive comparison.
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*
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* @return bool
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*/
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public static function isWithin(string $className, string $namespace): bool
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{
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$className = strtolower(trim($className, '\\') . '\\');
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$namespace = strtolower(trim($namespace, '\\') . '\\');
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return $className === $namespace || strpos($className, $namespace) === 0;
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}
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public static function nameSpaceRootsMatch(string $fqcnA, string $fqcnB): bool
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{
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return strtolower(self::getNameSpaceRoot($fqcnA)) === strtolower(self::getNameSpaceRoot($fqcnB));
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}
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/**
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* @param string $fullyQualifiedClassName, e.g. '\Psalm\Internal\Analyzer\NamespaceAnalyzer'
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* @return string , e.g. 'Psalm'
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*/
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private static function getNameSpaceRoot(string $fullyQualifiedClassName): string
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{
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return preg_replace('/^([^\\\]+).*/', '$1', $fullyQualifiedClassName);
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}
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}
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