mirror of
https://github.com/danog/psalm.git
synced 2024-12-17 11:56:59 +01:00
820 lines
33 KiB
PHP
820 lines
33 KiB
PHP
<?php
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namespace Psalm\Internal\Analyzer\Statements\Expression\Call;
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use PhpParser;
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use Psalm\Internal\Analyzer\ClassLikeAnalyzer;
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use Psalm\Internal\Analyzer\FunctionLikeAnalyzer;
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use Psalm\Internal\Analyzer\MethodAnalyzer;
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use Psalm\Internal\Analyzer\Statements\ExpressionAnalyzer;
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use Psalm\Internal\Analyzer\StatementsAnalyzer;
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use Psalm\CodeLocation;
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use Psalm\Config;
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use Psalm\Context;
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use Psalm\Internal\FileManipulation\FileManipulationBuffer;
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use Psalm\Issue\DeprecatedClass;
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use Psalm\Issue\InvalidStringClass;
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use Psalm\Issue\InternalClass;
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use Psalm\Issue\MixedMethodCall;
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use Psalm\Issue\ParentNotFound;
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use Psalm\Issue\UndefinedClass;
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use Psalm\Issue\UndefinedMethod;
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use Psalm\IssueBuffer;
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use Psalm\Storage\Assertion;
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use Psalm\Type;
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use Psalm\Type\Atomic\TNamedObject;
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/**
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* @internal
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*/
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class StaticCallAnalyzer extends \Psalm\Internal\Analyzer\Statements\Expression\CallAnalyzer
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{
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/**
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* @param StatementsAnalyzer $statements_analyzer
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* @param PhpParser\Node\Expr\StaticCall $stmt
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* @param Context $context
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*
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* @return false|null
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*/
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public static function analyze(
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StatementsAnalyzer $statements_analyzer,
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PhpParser\Node\Expr\StaticCall $stmt,
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Context $context
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) {
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$method_id = null;
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$lhs_type = null;
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$file_analyzer = $statements_analyzer->getFileAnalyzer();
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$codebase = $statements_analyzer->getCodebase();
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$source = $statements_analyzer->getSource();
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$stmt->inferredType = null;
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$config = $codebase->config;
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if ($stmt->class instanceof PhpParser\Node\Name) {
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$fq_class_name = null;
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if (count($stmt->class->parts) === 1
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&& in_array(strtolower($stmt->class->parts[0]), ['self', 'static', 'parent'], true)
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) {
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if ($stmt->class->parts[0] === 'parent') {
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$child_fq_class_name = $context->self;
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$class_storage = $child_fq_class_name
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? $codebase->classlike_storage_provider->get($child_fq_class_name)
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: null;
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if (!$class_storage || !$class_storage->parent_classes) {
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if (IssueBuffer::accepts(
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new ParentNotFound(
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'Cannot call method on parent as this class does not extend another',
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new CodeLocation($statements_analyzer->getSource(), $stmt)
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),
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$statements_analyzer->getSuppressedIssues()
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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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$fq_class_name = reset($class_storage->parent_classes);
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$class_storage = $codebase->classlike_storage_provider->get($fq_class_name);
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$fq_class_name = $class_storage->name;
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if ($stmt->name instanceof PhpParser\Node\Identifier
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&& $class_storage->user_defined
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&& ($context->collect_mutations || $context->collect_initializations)
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) {
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$method_id = $fq_class_name . '::' . strtolower($stmt->name->name);
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$appearing_method_id = $codebase->getAppearingMethodId($method_id);
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if (!$appearing_method_id) {
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if (IssueBuffer::accepts(
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new UndefinedMethod(
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'Method ' . $method_id . ' does not exist',
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new CodeLocation($statements_analyzer->getSource(), $stmt),
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$method_id
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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return false;
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}
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return;
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}
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list($appearing_method_class_name) = explode('::', $appearing_method_id);
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$old_context_include_location = $context->include_location;
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$old_self = $context->self;
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$context->include_location = new CodeLocation($statements_analyzer->getSource(), $stmt);
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$context->self = $appearing_method_class_name;
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if ($context->collect_mutations) {
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$file_analyzer->getMethodMutations($method_id, $context);
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} else {
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// collecting initializations
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$local_vars_in_scope = [];
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$local_vars_possibly_in_scope = [];
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foreach ($context->vars_in_scope as $var => $_) {
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if (strpos($var, '$this->') !== 0 && $var !== '$this') {
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$local_vars_in_scope[$var] = $context->vars_in_scope[$var];
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}
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}
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foreach ($context->vars_possibly_in_scope as $var => $_) {
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if (strpos($var, '$this->') !== 0 && $var !== '$this') {
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$local_vars_possibly_in_scope[$var] = $context->vars_possibly_in_scope[$var];
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}
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}
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if (!isset($context->initialized_methods[$method_id])) {
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if ($context->initialized_methods === null) {
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$context->initialized_methods = [];
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}
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$context->initialized_methods[$method_id] = true;
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$file_analyzer->getMethodMutations($method_id, $context);
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foreach ($local_vars_in_scope as $var => $type) {
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$context->vars_in_scope[$var] = $type;
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}
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foreach ($local_vars_possibly_in_scope as $var => $type) {
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$context->vars_possibly_in_scope[$var] = $type;
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}
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}
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}
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$context->include_location = $old_context_include_location;
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$context->self = $old_self;
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if (isset($context->vars_in_scope['$this']) && $old_self) {
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$context->vars_in_scope['$this'] = Type::parseString($old_self);
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}
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}
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} elseif ($context->self) {
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if ($stmt->class->parts[0] === 'static' && isset($context->vars_in_scope['$this'])) {
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$fq_class_name = (string) $context->vars_in_scope['$this'];
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$lhs_type = clone $context->vars_in_scope['$this'];
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} else {
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$fq_class_name = $context->self;
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}
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} else {
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$namespace = $statements_analyzer->getNamespace()
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? $statements_analyzer->getNamespace() . '\\'
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: '';
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$fq_class_name = $namespace . $statements_analyzer->getClassName();
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}
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if ($context->isPhantomClass($fq_class_name)) {
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return null;
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}
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} elseif ($context->check_classes) {
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$aliases = $statements_analyzer->getAliases();
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if ($context->calling_method_id
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&& !$stmt->class instanceof PhpParser\Node\Name\FullyQualified
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) {
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$codebase->file_reference_provider->addReferenceToClassMethod(
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$context->calling_method_id,
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'use:' . $stmt->class->parts[0] . ':' . \md5($statements_analyzer->getFilePath())
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);
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}
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$fq_class_name = ClassLikeAnalyzer::getFQCLNFromNameObject(
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$stmt->class,
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$aliases
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);
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if ($context->isPhantomClass($fq_class_name)) {
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return null;
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}
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$does_class_exist = false;
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if ($context->self) {
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$self_storage = $codebase->classlike_storage_provider->get($context->self);
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if (isset($self_storage->used_traits[strtolower($fq_class_name)])) {
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$fq_class_name = $context->self;
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$does_class_exist = true;
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}
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}
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if (!$does_class_exist) {
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$does_class_exist = ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
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$statements_analyzer,
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$fq_class_name,
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new CodeLocation($source, $stmt->class),
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$statements_analyzer->getSuppressedIssues(),
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false
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);
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}
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if (!$does_class_exist) {
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return $does_class_exist;
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}
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}
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if ($codebase->server_mode && $fq_class_name) {
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$codebase->analyzer->addNodeReference(
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$statements_analyzer->getFilePath(),
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$stmt->class,
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$fq_class_name
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);
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}
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if ($fq_class_name && !$lhs_type) {
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$lhs_type = new Type\Union([new TNamedObject($fq_class_name)]);
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}
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} else {
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ExpressionAnalyzer::analyze($statements_analyzer, $stmt->class, $context);
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$lhs_type = $stmt->class->inferredType;
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}
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if (!$lhs_type) {
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if (self::checkFunctionArguments(
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$statements_analyzer,
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$stmt->args,
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null,
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null,
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$context
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) === false) {
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return false;
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}
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return null;
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}
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$has_mock = false;
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foreach ($lhs_type->getTypes() as $lhs_type_part) {
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$intersection_types = [];
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if ($lhs_type_part instanceof TNamedObject) {
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$fq_class_name = $lhs_type_part->value;
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if (!ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
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$statements_analyzer,
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$fq_class_name,
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new CodeLocation($source, $stmt->class),
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$statements_analyzer->getSuppressedIssues(),
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false
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)) {
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return false;
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}
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$intersection_types = $lhs_type_part->extra_types;
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} elseif ($lhs_type_part instanceof Type\Atomic\TClassString
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&& $lhs_type_part->as_type
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) {
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$fq_class_name = $lhs_type_part->as_type->value;
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if (!ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
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$statements_analyzer,
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$fq_class_name,
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new CodeLocation($source, $stmt->class),
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$statements_analyzer->getSuppressedIssues(),
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false
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)) {
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return false;
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}
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$intersection_types = $lhs_type_part->as_type->extra_types;
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} elseif ($lhs_type_part instanceof Type\Atomic\TLiteralClassString) {
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$fq_class_name = $lhs_type_part->value;
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if (!ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
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$statements_analyzer,
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$fq_class_name,
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new CodeLocation($source, $stmt->class),
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$statements_analyzer->getSuppressedIssues(),
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false
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)) {
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return false;
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}
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} elseif ($lhs_type_part instanceof Type\Atomic\TGenericParam
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&& !$lhs_type_part->as->isMixed()
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&& !$lhs_type_part->as->hasObject()
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) {
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$fq_class_name = null;
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foreach ($lhs_type_part->as->getTypes() as $generic_param_type) {
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if (!$generic_param_type instanceof TNamedObject) {
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continue 2;
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}
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$fq_class_name = $generic_param_type->value;
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break;
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}
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if (!$fq_class_name) {
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if (IssueBuffer::accepts(
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new UndefinedClass(
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'Type ' . $lhs_type_part->as . ' cannot be called as a class',
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new CodeLocation($statements_analyzer->getSource(), $stmt),
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(string) $lhs_type_part
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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// fall through
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}
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continue;
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}
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} else {
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if ($lhs_type_part instanceof Type\Atomic\TMixed
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|| $lhs_type_part instanceof Type\Atomic\TGenericParam
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|| $lhs_type_part instanceof Type\Atomic\TClassString
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) {
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if (IssueBuffer::accepts(
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new MixedMethodCall(
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'Cannot call method on an unknown class',
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new CodeLocation($statements_analyzer->getSource(), $stmt)
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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// fall through
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}
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continue;
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}
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if ($lhs_type_part instanceof Type\Atomic\TString) {
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if ($config->allow_string_standin_for_class
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&& !$lhs_type_part instanceof Type\Atomic\TNumericString
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) {
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continue;
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}
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if (IssueBuffer::accepts(
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new InvalidStringClass(
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'String cannot be used as a class',
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new CodeLocation($statements_analyzer->getSource(), $stmt)
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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// fall through
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}
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continue;
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}
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if ($lhs_type_part instanceof Type\Atomic\TNull
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&& $lhs_type->ignore_nullable_issues
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) {
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continue;
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}
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if (IssueBuffer::accepts(
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new UndefinedClass(
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'Type ' . $lhs_type_part . ' cannot be called as a class',
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new CodeLocation($statements_analyzer->getSource(), $stmt),
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(string) $lhs_type_part
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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// fall through
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}
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continue;
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}
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$fq_class_name = $codebase->classlikes->getUnAliasedName($fq_class_name);
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$is_mock = ExpressionAnalyzer::isMock($fq_class_name);
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$has_mock = $has_mock || $is_mock;
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if ($stmt->name instanceof PhpParser\Node\Identifier && !$is_mock) {
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$method_name_lc = strtolower($stmt->name->name);
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$method_id = $fq_class_name . '::' . $method_name_lc;
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$cased_method_id = $fq_class_name . '::' . $stmt->name->name;
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$args = $stmt->args;
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if ($intersection_types
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&& !$codebase->methods->methodExists($method_id)
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) {
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foreach ($intersection_types as $intersection_type) {
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if (!$intersection_type instanceof TNamedObject) {
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continue;
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}
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$intersection_method_id = $intersection_type->value . '::' . $method_name_lc;
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if ($codebase->methods->methodExists($intersection_method_id)) {
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$method_id = $intersection_method_id;
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$fq_class_name = $intersection_type->value;
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$cased_method_id = $fq_class_name . '::' . $stmt->name->name;
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break;
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}
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}
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}
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if (!$codebase->methods->methodExists($method_id)
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|| !MethodAnalyzer::isMethodVisible(
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$method_id,
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$context->self,
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$statements_analyzer->getSource()
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)
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) {
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if ($codebase->methods->methodExists(
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$fq_class_name . '::__callStatic',
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$context->calling_method_id
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)) {
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$class_storage = $codebase->classlike_storage_provider->get($fq_class_name);
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if (isset($class_storage->pseudo_static_methods[$method_name_lc])) {
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$pseudo_method_storage = $class_storage->pseudo_static_methods[$method_name_lc];
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if (self::checkFunctionArguments(
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$statements_analyzer,
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$args,
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$pseudo_method_storage->params,
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$method_id,
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$context
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) === false) {
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return false;
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}
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$generic_params = [];
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if (self::checkFunctionLikeArgumentsMatch(
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$statements_analyzer,
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$args,
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null,
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$pseudo_method_storage->params,
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$pseudo_method_storage,
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null,
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$generic_params,
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new CodeLocation($source, $stmt),
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$context
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) === false) {
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return false;
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}
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if ($pseudo_method_storage->return_type) {
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$return_type_candidate = clone $pseudo_method_storage->return_type;
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if (!isset($stmt->inferredType)) {
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$stmt->inferredType = $return_type_candidate;
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} else {
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$stmt->inferredType = Type::combineUnionTypes(
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$return_type_candidate,
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$stmt->inferredType
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);
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}
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return;
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}
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} else {
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if (self::checkFunctionArguments(
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$statements_analyzer,
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$args,
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null,
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null,
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$context
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) === false) {
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return false;
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}
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}
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$array_values = array_map(
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/**
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* @return PhpParser\Node\Expr\ArrayItem
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*/
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function (PhpParser\Node\Arg $arg) {
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return new PhpParser\Node\Expr\ArrayItem($arg->value);
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},
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$args
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);
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$args = [
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new PhpParser\Node\Arg(new PhpParser\Node\Scalar\String_($method_id)),
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new PhpParser\Node\Arg(new PhpParser\Node\Expr\Array_($array_values)),
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];
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$method_id = $fq_class_name . '::__callstatic';
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}
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if (!$context->check_methods) {
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if (self::checkFunctionArguments(
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$statements_analyzer,
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$stmt->args,
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null,
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null,
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$context
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) === false) {
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return false;
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}
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return null;
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}
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}
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$does_method_exist = MethodAnalyzer::checkMethodExists(
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$codebase,
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$method_id,
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new CodeLocation($source, $stmt),
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$statements_analyzer->getSuppressedIssues(),
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$context->calling_method_id
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);
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if (!$does_method_exist) {
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return false;
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}
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$class_storage = $codebase->classlike_storage_provider->get($fq_class_name);
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|
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if ($class_storage->deprecated) {
|
|
if (IssueBuffer::accepts(
|
|
new DeprecatedClass(
|
|
$fq_class_name . ' is marked deprecated',
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
}
|
|
|
|
if ($class_storage->internal
|
|
&& $context->self
|
|
&& !$context->collect_initializations
|
|
&& !$context->collect_mutations
|
|
) {
|
|
$self_root = preg_replace('/^([^\\\]+).*/', '$1', $context->self);
|
|
$declaring_root = preg_replace('/^([^\\\]+).*/', '$1', $fq_class_name);
|
|
|
|
if (strtolower($self_root) !== strtolower($declaring_root)) {
|
|
if (IssueBuffer::accepts(
|
|
new InternalClass(
|
|
$fq_class_name . ' is marked internal',
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
}
|
|
}
|
|
|
|
if (MethodAnalyzer::checkMethodVisibility(
|
|
$method_id,
|
|
$context->self,
|
|
$statements_analyzer->getSource(),
|
|
new CodeLocation($source, $stmt),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
) === false) {
|
|
return false;
|
|
}
|
|
|
|
if ((!$stmt->class instanceof PhpParser\Node\Name
|
|
|| $stmt->class->parts[0] !== 'parent'
|
|
|| $statements_analyzer->isStatic())
|
|
&& (
|
|
!$context->self
|
|
|| $statements_analyzer->isStatic()
|
|
|| !$codebase->classExtends($context->self, $fq_class_name)
|
|
)
|
|
) {
|
|
if (MethodAnalyzer::checkStatic(
|
|
$method_id,
|
|
($stmt->class instanceof PhpParser\Node\Name
|
|
&& strtolower($stmt->class->parts[0]) === 'self')
|
|
|| $context->self === $fq_class_name,
|
|
!$statements_analyzer->isStatic(),
|
|
$codebase,
|
|
new CodeLocation($source, $stmt),
|
|
$statements_analyzer->getSuppressedIssues(),
|
|
$is_dynamic_this_method
|
|
) === false) {
|
|
// fall through
|
|
}
|
|
|
|
if ($is_dynamic_this_method) {
|
|
$fake_method_call_expr = new PhpParser\Node\Expr\MethodCall(
|
|
new PhpParser\Node\Expr\Variable(
|
|
'this',
|
|
$stmt->class->getAttributes()
|
|
),
|
|
$stmt->name,
|
|
$stmt->args,
|
|
$stmt->getAttributes()
|
|
);
|
|
|
|
if (MethodCallAnalyzer::analyze(
|
|
$statements_analyzer,
|
|
$fake_method_call_expr,
|
|
$context
|
|
) === false) {
|
|
return false;
|
|
}
|
|
|
|
if (isset($fake_method_call_expr->inferredType)) {
|
|
$stmt->inferredType = $fake_method_call_expr->inferredType;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
}
|
|
|
|
if (MethodAnalyzer::checkMethodNotDeprecatedOrInternal(
|
|
$codebase,
|
|
$context,
|
|
$method_id,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
) === false) {
|
|
// fall through
|
|
}
|
|
|
|
if (self::checkMethodArgs(
|
|
$method_id,
|
|
$args,
|
|
$found_generic_params,
|
|
$context,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt),
|
|
$statements_analyzer
|
|
) === false) {
|
|
return false;
|
|
}
|
|
|
|
$fq_class_name = $stmt->class instanceof PhpParser\Node\Name && $stmt->class->parts === ['parent']
|
|
? (string) $statements_analyzer->getFQCLN()
|
|
: $fq_class_name;
|
|
|
|
$self_fq_class_name = $fq_class_name;
|
|
|
|
$return_type_candidate = $codebase->methods->getMethodReturnType(
|
|
$method_id,
|
|
$self_fq_class_name,
|
|
$args
|
|
);
|
|
|
|
if ($return_type_candidate) {
|
|
$return_type_candidate = clone $return_type_candidate;
|
|
|
|
if ($found_generic_params) {
|
|
$return_type_candidate->replaceTemplateTypesWithArgTypes(
|
|
$found_generic_params
|
|
);
|
|
}
|
|
|
|
$return_type_candidate = ExpressionAnalyzer::fleshOutType(
|
|
$codebase,
|
|
$return_type_candidate,
|
|
$self_fq_class_name,
|
|
$fq_class_name
|
|
);
|
|
|
|
$return_type_location = $codebase->methods->getMethodReturnTypeLocation(
|
|
$method_id,
|
|
$secondary_return_type_location
|
|
);
|
|
|
|
if ($secondary_return_type_location) {
|
|
$return_type_location = $secondary_return_type_location;
|
|
}
|
|
|
|
// only check the type locally if it's defined externally
|
|
if ($return_type_location && !$config->isInProjectDirs($return_type_location->file_path)) {
|
|
$return_type_candidate->check(
|
|
$statements_analyzer,
|
|
new CodeLocation($source, $stmt),
|
|
$statements_analyzer->getSuppressedIssues(),
|
|
$context->phantom_classes
|
|
);
|
|
}
|
|
}
|
|
|
|
$method_storage = $codebase->methods->getUserMethodStorage($method_id);
|
|
|
|
if ($method_storage) {
|
|
if ($method_storage->assertions) {
|
|
self::applyAssertionsToContext(
|
|
$stmt->name,
|
|
$method_storage->assertions,
|
|
$stmt->args,
|
|
$found_generic_params ?: [],
|
|
$context,
|
|
$statements_analyzer
|
|
);
|
|
}
|
|
|
|
if ($method_storage->if_true_assertions) {
|
|
$stmt->ifTrueAssertions = array_map(
|
|
function (Assertion $assertion) use ($found_generic_params) : Assertion {
|
|
return $assertion->getUntemplatedCopy($found_generic_params ?: []);
|
|
},
|
|
$method_storage->if_true_assertions
|
|
);
|
|
}
|
|
|
|
if ($method_storage->if_false_assertions) {
|
|
$stmt->ifFalseAssertions = array_map(
|
|
function (Assertion $assertion) use ($found_generic_params) : Assertion {
|
|
return $assertion->getUntemplatedCopy($found_generic_params ?: []);
|
|
},
|
|
$method_storage->if_false_assertions
|
|
);
|
|
}
|
|
}
|
|
|
|
if ($config->after_method_checks) {
|
|
$file_manipulations = [];
|
|
|
|
$appearing_method_id = $codebase->methods->getAppearingMethodId($method_id);
|
|
$declaring_method_id = $codebase->methods->getDeclaringMethodId($method_id);
|
|
|
|
if ($appearing_method_id && $declaring_method_id) {
|
|
foreach ($config->after_method_checks as $plugin_fq_class_name) {
|
|
$plugin_fq_class_name::afterMethodCallAnalysis(
|
|
$stmt,
|
|
$method_id,
|
|
$appearing_method_id,
|
|
$declaring_method_id,
|
|
$context,
|
|
$source,
|
|
$codebase,
|
|
$file_manipulations,
|
|
$return_type_candidate
|
|
);
|
|
}
|
|
}
|
|
|
|
if ($file_manipulations) {
|
|
/** @psalm-suppress MixedTypeCoercion */
|
|
FileManipulationBuffer::add($statements_analyzer->getFilePath(), $file_manipulations);
|
|
}
|
|
}
|
|
|
|
if ($return_type_candidate) {
|
|
if (isset($stmt->inferredType)) {
|
|
$stmt->inferredType = Type::combineUnionTypes($stmt->inferredType, $return_type_candidate);
|
|
} else {
|
|
$stmt->inferredType = $return_type_candidate;
|
|
}
|
|
}
|
|
} else {
|
|
if (self::checkFunctionArguments(
|
|
$statements_analyzer,
|
|
$stmt->args,
|
|
null,
|
|
null,
|
|
$context
|
|
) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if ($codebase->server_mode && $method_id) {
|
|
/** @psalm-suppress PossiblyInvalidArgument never a string, PHP Parser bug */
|
|
$codebase->analyzer->addNodeReference(
|
|
$statements_analyzer->getFilePath(),
|
|
$stmt->name,
|
|
$method_id . '()'
|
|
);
|
|
}
|
|
|
|
if ($codebase->server_mode
|
|
&& (!$context->collect_initializations
|
|
&& !$context->collect_mutations)
|
|
&& isset($stmt->inferredType)
|
|
) {
|
|
/** @psalm-suppress PossiblyInvalidArgument never a string, PHP Parser bug */
|
|
$codebase->analyzer->addNodeType(
|
|
$statements_analyzer->getFilePath(),
|
|
$stmt->name,
|
|
(string) $stmt->inferredType
|
|
);
|
|
}
|
|
}
|
|
|
|
if ($method_id === null) {
|
|
return self::checkMethodArgs(
|
|
$method_id,
|
|
$stmt->args,
|
|
$found_generic_params,
|
|
$context,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt),
|
|
$statements_analyzer
|
|
);
|
|
}
|
|
|
|
if (!$config->remember_property_assignments_after_call && !$context->collect_initializations) {
|
|
$context->removeAllObjectVars();
|
|
}
|
|
}
|
|
}
|