mirror of
https://github.com/danog/psalm.git
synced 2024-12-14 18:36:58 +01:00
718 lines
25 KiB
PHP
718 lines
25 KiB
PHP
<?php
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namespace Psalm\Checker;
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use Psalm\Issue\InvalidClass;
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use Psalm\Issue\UndefinedClass;
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use Psalm\Issue\UndefinedTrait;
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use Psalm\IssueBuffer;
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use Psalm\Context;
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use Psalm\Config;
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use Psalm\Type;
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use Psalm\StatementsSource;
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use PhpParser;
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use PhpParser\Error;
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use PhpParser\ParserFactory;
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use ReflectionClass;
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use ReflectionException;
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use ReflectionMethod;
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use ReflectionProperty;
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abstract class ClassLikeChecker implements StatementsSource
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{
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protected static $SPECIAL_TYPES = ['int', 'string', 'float', 'bool', 'false', 'object', 'empty', 'callable', 'array'];
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protected $file_name;
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protected $class;
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protected $namespace;
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protected $aliased_classes;
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protected $absolute_class;
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protected $has_custom_get = false;
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protected $source;
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/** @var string|null */
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protected $parent_class;
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/**
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* @var array
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*/
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protected $suppressed_issues;
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/**
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* @var array<ClassMethodChecker>
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*/
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protected static $method_checkers = [];
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protected static $this_class = null;
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protected static $class_methods = [];
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protected static $class_checkers = [];
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protected static $public_class_properties = [];
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protected static $protected_class_properties = [];
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protected static $private_class_properties = [];
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protected static $public_static_class_properties = [];
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protected static $protected_static_class_properties = [];
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protected static $private_static_class_properties = [];
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protected static $public_class_constants = [];
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protected static $registered_classes = [];
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public function __construct(PhpParser\Node\Stmt\ClassLike $class, StatementsSource $source, $absolute_class)
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{
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$this->class = $class;
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$this->namespace = $source->getNamespace();
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$this->aliased_classes = $source->getAliasedClasses();
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$this->file_name = $source->getFileName();
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$this->absolute_class = $absolute_class;
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$this->suppressed_issues = $source->getSuppressedIssues();
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if (self::$this_class || $class instanceof PhpParser\Node\Stmt\Trait_) {
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self::$class_checkers[$absolute_class] = $this;
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}
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}
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public function check($check_methods = true, Context $class_context = null)
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{
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$config = Config::getInstance();
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$leftover_stmts = [];
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$method_checkers = [];
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self::$class_methods[$this->absolute_class] = [];
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self::$public_class_properties[$this->absolute_class] = [];
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self::$protected_class_properties[$this->absolute_class] = [];
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self::$private_class_properties[$this->absolute_class] = [];
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self::$public_static_class_properties[$this->absolute_class] = [];
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self::$protected_static_class_properties[$this->absolute_class] = [];
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self::$private_static_class_properties[$this->absolute_class] = [];
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self::$public_class_constants[$this->absolute_class] = [];
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self::$registered_classes[$this->absolute_class] = true;
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if ($this instanceof ClassChecker) {
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if ($this->parent_class) {
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self::$public_class_properties[$this->absolute_class] = self::$public_class_properties[$this->parent_class];
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self::$protected_class_properties[$this->absolute_class] = self::$protected_class_properties[$this->parent_class];
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self::$public_static_class_properties[$this->absolute_class] = self::$public_static_class_properties[$this->parent_class];
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self::$protected_static_class_properties[$this->absolute_class] = self::$protected_static_class_properties[$this->parent_class];
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self::$public_class_constants[$this->absolute_class] = self::$public_class_constants[$this->parent_class];
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}
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foreach (ClassChecker::getInterfacesForClass($this->absolute_class) as $interface_name => $_) {
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self::$public_class_constants[$this->absolute_class] += self::$public_class_constants[$interface_name];
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}
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}
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if (!$class_context) {
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$class_context = new Context($this->file_name, $this->absolute_class);
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$class_context->parent = $this->parent_class;
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$class_context->vars_in_scope['this'] = new Type\Union([new Type\Atomic($this->absolute_class)]);
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}
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foreach ($this->class->stmts as $stmt) {
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if ($stmt instanceof PhpParser\Node\Stmt\ClassMethod) {
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$method_id = $this->absolute_class . '::' . $stmt->name;
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if (!isset(self::$method_checkers[$method_id])) {
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$method_checker = new ClassMethodChecker($stmt, $this);
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$method_checkers[$stmt->name] = $method_checker;
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if (self::$this_class && !$check_methods) {
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self::$method_checkers[$method_id] = $method_checker;
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}
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}
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else {
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$method_checker = self::$method_checkers[$method_id];
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}
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self::$class_methods[$this->absolute_class][] = $stmt->name;
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} elseif ($stmt instanceof PhpParser\Node\Stmt\TraitUse) {
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$method_map = [];
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foreach ($stmt->adaptations as $adaptation) {
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if ($adaptation instanceof PhpParser\Node\Stmt\TraitUseAdaptation\Alias) {
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$method_map[$adaptation->method] = $adaptation->newName;
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}
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}
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foreach ($stmt->traits as $trait) {
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$trait_name = self::getAbsoluteClassFromName($trait, $this->namespace, $this->aliased_classes);
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if (!trait_exists($trait_name)) {
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if (IssueBuffer::accepts(
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new UndefinedTrait('Trait ' . $trait_name . ' does not exist', $this->file_name, $trait->getLine()),
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$this->suppressed_issues
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)) {
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return false;
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}
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}
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else {
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try {
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$reflection_trait = new \ReflectionClass($trait_name);
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}
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catch (\ReflectionException $e) {
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if (IssueBuffer::accepts(
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new UndefinedTrait('Trait ' . $trait_name . ' has wrong casing', $this->file_name, $trait->getLine()),
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$this->suppressed_issues
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)) {
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return false;
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}
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continue;
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}
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$this->registerInheritedMethods($trait_name, $method_map);
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$trait_checker = FileChecker::getClassLikeCheckerFromClass($trait_name);
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$trait_checker->check(true, $class_context);
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}
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}
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} else {
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if ($stmt instanceof PhpParser\Node\Stmt\Property) {
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$comment = $stmt->getDocComment();
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$type_in_comment = null;
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if ($comment && $config->use_docblock_types && count($stmt->props) === 1) {
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$type_in_comment = CommentChecker::getTypeFromComment((string) $comment, null, $this);
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}
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$property_type = $type_in_comment ? $type_in_comment : Type::getMixed();
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foreach ($stmt->props as $property) {
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if ($stmt->isStatic()) {
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if ($stmt->isPublic()) {
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self::$public_static_class_properties[$class_context->self][$property->name] = $property_type;
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}
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elseif ($stmt->isProtected()) {
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self::$protected_static_class_properties[$class_context->self][$property->name] = $property_type;
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}
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elseif ($stmt->isPrivate()) {
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self::$private_static_class_properties[$class_context->self][$property->name] = $property_type;
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}
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}
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else {
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if ($stmt->isPublic()) {
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self::$public_class_properties[$class_context->self][$property->name] = $property_type;
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}
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elseif ($stmt->isProtected()) {
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self::$protected_class_properties[$class_context->self][$property->name] = $property_type;
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}
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elseif ($stmt->isPrivate()) {
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self::$private_class_properties[$class_context->self][$property->name] = $property_type;
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}
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}
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if (!$stmt->isStatic()) {
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$class_context->vars_in_scope['this->' . $property->name] = $property_type;
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}
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}
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}
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elseif ($stmt instanceof PhpParser\Node\Stmt\ClassConst) {
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$comment = $stmt->getDocComment();
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$type_in_comment = null;
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if ($comment && $config->use_docblock_types && count($stmt->consts) === 1) {
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$type_in_comment = CommentChecker::getTypeFromComment((string) $comment, null, $this);
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}
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$const_type = $type_in_comment ? $type_in_comment : Type::getMixed();
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foreach ($stmt->consts as $const) {
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self::$public_class_constants[$class_context->self][$const->name] = $const_type;
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}
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}
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$leftover_stmts[] = $stmt;
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}
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}
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if (method_exists($this->absolute_class, '__get')) {
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$this->has_custom_get = true;
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}
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if ($leftover_stmts) {
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(new StatementsChecker($this))->check($leftover_stmts, $class_context);
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}
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$config = Config::getInstance();
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if ($check_methods) {
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// do the method checks after all class methods have been initialised
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foreach ($method_checkers as $method_checker) {
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$method_checker->check(clone $class_context);
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if (!$config->excludeIssueInFile('InvalidReturnType', $this->file_name)) {
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$method_checker->checkReturnTypes();
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}
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}
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}
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}
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/**
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* Used in deep method evaluation, we get method checkers on the current or parent
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* classes
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*
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* @param string $method_id
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* @return ClassMethodChecker
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*/
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public static function getMethodChecker($method_id)
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{
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if (isset(self::$method_checkers[$method_id])) {
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return self::$method_checkers[$method_id];
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}
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$declaring_method_id = ClassMethodChecker::getDeclaringMethod($method_id);
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$declaring_class = explode('::', $declaring_method_id)[0];
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$class_checker = FileChecker::getClassLikeCheckerFromClass($declaring_class);
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if (!$class_checker) {
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throw new \InvalidArgumentException('Could not get class checker for ' . $declaring_class);
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}
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foreach ($class_checker->class->stmts as $stmt) {
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if ($stmt instanceof PhpParser\Node\Stmt\ClassMethod) {
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$method_checker = new ClassMethodChecker($stmt, $class_checker);
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$method_id = $class_checker->absolute_class . '::' . $stmt->name;
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self::$method_checkers[$method_id] = $method_checker;
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return $method_checker;
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}
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}
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throw new \InvalidArgumentException('Method checker not found');
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}
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/**
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* Returns a class checker for the given class, if one has already been registered
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* @param string $class_name
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* @return self|null
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*/
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public static function getClassLikeCheckerFromClass($class_name)
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{
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if (isset(self::$class_checkers[$class_name])) {
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return self::$class_checkers[$class_name];
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}
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return null;
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}
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/**
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* @return bool|null
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*/
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public static function checkClassName(PhpParser\Node\Name $class_name, $namespace, array $aliased_classes, $file_name, array $suppressed_issues)
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{
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if ($class_name->parts[0] === 'static') {
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return;
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}
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$absolute_class = self::getAbsoluteClassFromName($class_name, $namespace, $aliased_classes);
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return self::checkAbsoluteClassOrInterface($absolute_class, $file_name, $class_name->getLine(), $suppressed_issues);
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}
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/**
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* @param string $absolute_class
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* @return bool
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*/
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public static function classOrInterfaceExists($absolute_class)
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{
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return ClassChecker::classExists($absolute_class) || InterfaceChecker::interfaceExists($absolute_class);
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}
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/**
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* @param string $absolute_class
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* @param string $possible_parent
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* @return bool
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*/
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public static function classExtendsOrImplements($absolute_class, $possible_parent)
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{
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return ClassChecker::classExtends($absolute_class, $possible_parent)
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|| ClassChecker::classImplements($absolute_class, $possible_parent);
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}
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/**
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* @param string $absolute_class
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* @param string $file_name
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* @param int $line_number
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* @param array<string> $suppressed_issues
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* @return bool|null
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*/
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public static function checkAbsoluteClassOrInterface($absolute_class, $file_name, $line_number, array $suppressed_issues)
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{
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if (empty($absolute_class)) {
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throw new \InvalidArgumentException('$class cannot be empty');
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}
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$absolute_class = preg_replace('/^\\\/', '', $absolute_class);
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$class_exists = ClassChecker::classExists($absolute_class);
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$interface_exists = InterfaceChecker::interfaceExists($absolute_class);
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if (!$class_exists && !$interface_exists) {
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if (IssueBuffer::accepts(
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new UndefinedClass('Class or interface ' . $absolute_class . ' does not exist', $file_name, $line_number),
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$suppressed_issues
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)) {
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return false;
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}
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return;
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}
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if (($class_exists && !ClassChecker::hasCorrectCasing($absolute_class))
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|| ($interface_exists && !InterfaceChecker::hasCorrectCasing($absolute_class))
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) {
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if (IssueBuffer::accepts(
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new InvalidClass('Class or interface ' . $absolute_class . ' has wrong casing', $file_name, $line_number),
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$suppressed_issues
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)) {
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return false;
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}
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}
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return true;
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}
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public static function getAbsoluteClassFromName(PhpParser\Node\Name $class_name, $namespace, array $aliased_classes)
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{
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if ($class_name instanceof PhpParser\Node\Name\FullyQualified) {
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return implode('\\', $class_name->parts);
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}
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return self::getAbsoluteClassFromString(implode('\\', $class_name->parts), $namespace, $aliased_classes);
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}
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public static function getAbsoluteClassFromString($class, $namespace, array $imported_namespaces)
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{
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if (empty($class)) {
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throw new \InvalidArgumentException('$class cannot be empty');
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}
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if ($class[0] === '\\') {
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return substr($class, 1);
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}
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if (strpos($class, '\\') !== false) {
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$class_parts = explode('\\', $class);
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$first_namespace = array_shift($class_parts);
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if (isset($imported_namespaces[$first_namespace])) {
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return $imported_namespaces[$first_namespace] . '\\' . implode('\\', $class_parts);
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}
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} elseif (isset($imported_namespaces[$class])) {
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return $imported_namespaces[$class];
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}
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return ($namespace ? $namespace . '\\' : '') . $class;
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}
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public function getNamespace()
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{
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return $this->namespace;
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}
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public function getAliasedClasses()
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{
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return $this->aliased_classes;
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}
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public function getAbsoluteClass()
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{
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return $this->absolute_class;
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}
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public function getClassName()
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{
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return $this->class->name;
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}
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public function getParentClass()
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{
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return $this->parent_class;
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}
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public function getFileName()
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{
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return $this->file_name;
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}
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public function getClassLikeChecker()
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{
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return $this;
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}
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/**
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* @return bool
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*/
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public function isStatic()
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{
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return false;
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}
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public function hasCustomGet()
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{
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return $this->has_custom_get;
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}
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protected static function registerClass($class_name)
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{
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try {
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$reflected_class = new ReflectionClass($class_name);
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}
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catch (\ReflectionException $e) {
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return false;
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}
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if ($reflected_class->isUserDefined()) {
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$class_file_name = $reflected_class->getFileName();
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(new FileChecker($class_file_name))->check(true, false);
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}
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else {
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$class_properties = $reflected_class->getProperties();
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self::$public_class_properties[$class_name] = [];
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self::$protected_class_properties[$class_name] = [];
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self::$private_class_properties[$class_name] = [];
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self::$public_static_class_properties[$class_name] = [];
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self::$protected_static_class_properties[$class_name] = [];
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self::$private_static_class_properties[$class_name] = [];
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foreach ($class_properties as $class_property) {
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if ($class_property->isStatic()) {
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if ($class_property->isPublic()) {
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self::$public_static_class_properties[$class_name][$class_property->getName()] = Type::getMixed();
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}
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elseif ($class_property->isProtected()) {
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self::$protected_static_class_properties[$class_name][$class_property->getName()] = Type::getMixed();
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}
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elseif ($class_property->isPrivate()) {
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self::$private_static_class_properties[$class_name][$class_property->getName()] = Type::getMixed();
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}
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}
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else {
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if ($class_property->isPublic()) {
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self::$public_class_properties[$class_name][$class_property->getName()] = Type::getMixed();
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}
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elseif ($class_property->isProtected()) {
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self::$protected_class_properties[$class_name][$class_property->getName()] = Type::getMixed();
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}
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elseif ($class_property->isPrivate()) {
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self::$private_class_properties[$class_name][$class_property->getName()] = Type::getMixed();
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}
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}
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}
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$class_constants = $reflected_class->getConstants();
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self::$public_class_constants[$class_name] = [];
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foreach ($class_constants as $name => $value) {
|
|
switch (gettype($value)) {
|
|
case 'boolean':
|
|
$const_type = Type::getBool();
|
|
break;
|
|
|
|
case 'integer':
|
|
$const_type = Type::getInt();
|
|
break;
|
|
|
|
case 'double':
|
|
$const_type = Type::getFloat();
|
|
break;
|
|
|
|
case 'string':
|
|
$const_type = Type::getString();
|
|
break;
|
|
|
|
case 'array':
|
|
$const_type = Type::getArray();
|
|
break;
|
|
|
|
case 'NULL':
|
|
$const_type = Type::getNull();
|
|
break;
|
|
|
|
default:
|
|
$const_type = Type::getMixed();
|
|
}
|
|
|
|
self::$public_class_constants[$class_name][$name] = $const_type;
|
|
}
|
|
|
|
self::$registered_classes[$class_name] = true;
|
|
|
|
if (!$reflected_class->isTrait() && !$reflected_class->isInterface()) {
|
|
ClassChecker::getInterfacesForClass($class_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
public static function getInstancePropertiesForClass($class_name, $visibility)
|
|
{
|
|
if (!isset(self::$registered_classes[$class_name])) {
|
|
if (self::registerClass($class_name) === false) {
|
|
return [];
|
|
}
|
|
}
|
|
|
|
if ($visibility === ReflectionProperty::IS_PUBLIC) {
|
|
return self::$public_class_properties[$class_name];
|
|
}
|
|
elseif ($visibility === ReflectionProperty::IS_PROTECTED) {
|
|
return array_merge(
|
|
self::$public_class_properties[$class_name],
|
|
self::$protected_class_properties[$class_name]
|
|
);
|
|
}
|
|
elseif ($visibility === ReflectionProperty::IS_PRIVATE) {
|
|
return array_merge(
|
|
self::$public_class_properties[$class_name],
|
|
self::$protected_class_properties[$class_name],
|
|
self::$private_class_properties[$class_name]
|
|
);
|
|
}
|
|
|
|
throw new \InvalidArgumentException('Must specify $visibility');
|
|
}
|
|
|
|
public static function getStaticPropertiesForClass($class_name, $visibility)
|
|
{
|
|
if (!isset(self::$registered_classes[$class_name])) {
|
|
if (self::registerClass($class_name) === false) {
|
|
return [];
|
|
}
|
|
}
|
|
|
|
if ($visibility === ReflectionProperty::IS_PUBLIC) {
|
|
return self::$public_static_class_properties[$class_name];
|
|
}
|
|
elseif ($visibility === ReflectionProperty::IS_PROTECTED) {
|
|
return array_merge(
|
|
self::$public_static_class_properties[$class_name],
|
|
self::$protected_static_class_properties[$class_name]
|
|
);
|
|
}
|
|
elseif ($visibility === ReflectionProperty::IS_PRIVATE) {
|
|
return array_merge(
|
|
self::$public_static_class_properties[$class_name],
|
|
self::$protected_static_class_properties[$class_name],
|
|
self::$private_static_class_properties[$class_name]
|
|
);
|
|
}
|
|
|
|
throw new \InvalidArgumentException('Must specify $visibility');
|
|
}
|
|
|
|
public static function getConstantsForClass($class_name, $visibility)
|
|
{
|
|
// remove for PHP 7.1 support
|
|
$visibility = ReflectionProperty::IS_PUBLIC;
|
|
|
|
if (!isset(self::$registered_classes[$class_name])) {
|
|
if (self::registerClass($class_name) === false) {
|
|
return [];
|
|
}
|
|
}
|
|
|
|
if ($visibility === ReflectionProperty::IS_PUBLIC) {
|
|
return self::$public_class_constants[$class_name];
|
|
}
|
|
|
|
throw new \InvalidArgumentException('Given $visibility not supported');
|
|
}
|
|
|
|
public static function setConstantType($class_name, $const_name, Type\Union $type)
|
|
{
|
|
self::$public_class_constants[$class_name][$const_name] = $type;
|
|
}
|
|
|
|
public function getSource()
|
|
{
|
|
return null;
|
|
}
|
|
|
|
public function getSuppressedIssues()
|
|
{
|
|
return $this->suppressed_issues;
|
|
}
|
|
|
|
protected function registerInheritedMethods($parent_class, array $method_map = null)
|
|
{
|
|
if (!isset(self::$class_methods[$parent_class])) {
|
|
$class_methods = [];
|
|
|
|
$reflection_class = new ReflectionClass($parent_class);
|
|
|
|
$reflection_methods = $reflection_class->getMethods(ReflectionMethod::IS_PUBLIC | ReflectionMethod::IS_PROTECTED);
|
|
|
|
foreach ($reflection_methods as $reflection_method) {
|
|
if (!$reflection_method->isAbstract() && $reflection_method->getDeclaringClass()->getName() === $parent_class) {
|
|
$method_name = $reflection_method->getName();
|
|
$class_methods[] = $method_name;
|
|
}
|
|
}
|
|
|
|
self::$class_methods[$parent_class] = $class_methods;
|
|
}
|
|
else {
|
|
$class_methods = self::$class_methods[$parent_class];
|
|
}
|
|
|
|
foreach ($class_methods as $method_name) {
|
|
$parent_method_id = $parent_class . '::' . $method_name;
|
|
$implemented_method_id = $this->absolute_class . '::' . (isset($method_map[$method_name]) ? $method_map[$method_name] : $method_name);
|
|
|
|
ClassMethodChecker::registerInheritedMethod($parent_method_id, $implemented_method_id);
|
|
}
|
|
}
|
|
|
|
public static function setThisClass($this_class)
|
|
{
|
|
self::$this_class = $this_class;
|
|
|
|
self::$class_checkers = [];
|
|
}
|
|
|
|
public static function getThisClass()
|
|
{
|
|
return self::$this_class;
|
|
}
|
|
|
|
public static function clearCache()
|
|
{
|
|
self::$method_checkers = [];
|
|
|
|
self::$this_class = null;
|
|
|
|
self::$existing_classes = [];
|
|
self::$existing_classes_ci = [];
|
|
self::$existing_interfaces_ci = [];
|
|
self::$class_implements = [];
|
|
|
|
self::$class_methods = [];
|
|
self::$class_checkers = [];
|
|
|
|
self::$public_class_properties = [];
|
|
self::$protected_class_properties = [];
|
|
self::$private_class_properties = [];
|
|
|
|
self::$public_static_class_properties = [];
|
|
self::$protected_static_class_properties = [];
|
|
self::$private_static_class_properties = [];
|
|
|
|
self::$class_extends = [];
|
|
}
|
|
}
|