FunctionLikeAnalyzer::alterParams() - Code Metrics - vimeo/psalm - Measure and Improve Code Quality continuously with Scrutinizer

FunctionLikeAnalyzer::alterParams() F
last analyzed 2020-07-20 09:18 UTC

↳ Parent: FunctionLikeAnalyzer
Complexity

Conditions	27
Paths	1014
Size

Total Lines
121
Duplication

Lines	0
Ratio	0 %
Importance

Changes
Metric	Value
cc	27
nc	1014
nop	4
dl	0
loc	121
rs	0
c	0
b	0
f	0
How to fix Long Method Complexity

<?php
namespace Psalm\Internal\Analyzer;

use PhpParser;
use PhpParser\Node\Expr\ArrowFunction;
use PhpParser\Node\Expr\Closure;
use PhpParser\Node\Stmt\ClassMethod;
use PhpParser\Node\Stmt\Function_;
use Psalm\Codebase;
use Psalm\Internal\Analyzer\FunctionLike\ReturnTypeAnalyzer;
use Psalm\Internal\Analyzer\FunctionLike\ReturnTypeCollector;
use Psalm\Internal\Analyzer\Statements\ExpressionAnalyzer;
use Psalm\CodeLocation;
use Psalm\Context;
use Psalm\Internal\FileManipulation\FunctionDocblockManipulator;
use Psalm\Issue\InvalidDocblockParamName;
use Psalm\Issue\InvalidParamDefault;
use Psalm\Issue\MismatchingDocblockParamType;
use Psalm\Issue\MissingClosureParamType;
use Psalm\Issue\MissingParamType;
use Psalm\Issue\MissingThrowsDocblock;
use Psalm\Issue\ReferenceConstraintViolation;
use Psalm\Issue\ReservedWord;
use Psalm\Issue\UnusedClosureParam;
use Psalm\Issue\UnusedParam;
use Psalm\IssueBuffer;
use Psalm\StatementsSource;
use Psalm\Storage\FunctionLikeParameter;
use Psalm\Storage\FunctionLikeStorage;
use Psalm\Storage\MethodStorage;
use Psalm\Type;
use Psalm\Type\Atomic\TNamedObject;
use function md5;
use function strtolower;
use function array_merge;
use function array_filter;
use function array_key_exists;
use function substr;
use function strpos;
use function array_search;
use function array_keys;
use function end;
use Psalm\Internal\Taint\TaintNode;
use Psalm\Storage\FunctionStorage;

/**
 * @internal
 */
abstract class FunctionLikeAnalyzer extends SourceAnalyzer
{
    /**
     * @var Closure|Function_|ClassMethod|ArrowFunction
     */
    protected $function;

    /**
     * @var Codebase
     */
    protected $codebase;

    /**
     * @var array<string>
     */
    protected $suppressed_issues;

    /**
     * @var bool
     */
    protected $is_static = false;

    /**
     * @var StatementsSource
     */
    protected $source;

    /**
     * @var ?array<string, Type\Union>
     */
    protected $return_vars_in_scope = [];

    /**
     * @var ?array<string, bool>
     */
    protected $return_vars_possibly_in_scope = [];

    /**
     * @var Type\Union|null
     */
    private $local_return_type;

    /**
     * @var array<string, bool>
     */
    protected static $no_effects_hashes = [];

    /**
     * @var FunctionLikeStorage
     */
    protected $storage;

    /**
     * @param Closure|Function_|ClassMethod|ArrowFunction $function
     * @param SourceAnalyzer $source
     */
    protected function __construct($function, SourceAnalyzer $source, FunctionLikeStorage $storage)
    {
        $this->function = $function;
        $this->source = $source;
        $this->suppressed_issues = $source->getSuppressedIssues();
        $this->codebase = $source->getCodebase();
        $this->storage = $storage;
    }

    /**
     * @param Context       $context
     * @param Context|null  $global_context
     * @param bool          $add_mutations  whether or not to add mutations to this method
     * @param ?array<string, bool> $byref_uses
     *
     * @return false|null
     */
    public function analyze(
        Context $context,
        \Psalm\Internal\Provider\NodeDataProvider $type_provider,
        Context $global_context = null,
        $add_mutations = false,
        array $byref_uses = null
    ) {
        $storage = $this->storage;

        $function_stmts = $this->function->getStmts() ?: [];

        $hash = null;
        $real_method_id = null;
        $method_id = null;

        $cased_method_id = null;

        $appearing_class_storage = null;

        if ($global_context) {
            foreach ($global_context->constants as $const_name => $var_type) {
                if (!$context->hasVariable($const_name)) {
                    $context->vars_in_scope[$const_name] = clone $var_type;
                }
            }
        }

        $codebase = $this->codebase;
        $project_analyzer = $this->getProjectAnalyzer();

        $implemented_docblock_param_types = [];

        $classlike_storage_provider = $codebase->classlike_storage_provider;

        if ($codebase->track_unused_suppressions && !isset($storage->suppressed_issues[0])) {
            foreach ($storage->suppressed_issues as $offset => $issue_name) {
                IssueBuffer::addUnusedSuppression($this->getFilePath(), $offset, $issue_name);
            }
        }

        foreach ($storage->docblock_issues as $docblock_issue) {
            IssueBuffer::add($docblock_issue);
        }

        $overridden_method_ids = [];

        if ($this->function instanceof ClassMethod) {
            if (!$storage instanceof MethodStorage || !$this instanceof MethodAnalyzer) {
                throw new \UnexpectedValueException('$storage must be MethodStorage');
            }

            $real_method_id = $this->getMethodId();
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}

            $method_id = $this->getMethodId($context->self);
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}

            $fq_class_name = (string)$context->self;
            $appearing_class_storage = $classlike_storage_provider->get($fq_class_name);

            if ($add_mutations) {
                if (!$context->collect_initializations) {
                    $hash = md5($real_method_id . '::' . $context->getScopeSummary());

                    // if we know that the function has no effects on vars, we don't bother rechecking
                    if (isset(self::$no_effects_hashes[$hash])) {
                        return null;
                    }
                }
            } elseif ($context->self) {
                if ($appearing_class_storage->template_types) {
                    $template_params = [];

                    foreach ($appearing_class_storage->template_types as $param_name => $template_map) {
                        $key = array_keys($template_map)[0];

                        $template_params[] = new Type\Union([
                            new Type\Atomic\TTemplateParam(
                                $param_name,
                                \reset($template_map)[0],
                                $key
                            )
                        ]);
                    }

                    $this_object_type = new Type\Atomic\TGenericObject(
                        $context->self,
                        $template_params
                    );
                    $this_object_type->was_static = true;
                } else {
                    $this_object_type = new TNamedObject($context->self);
                    $this_object_type->was_static = true;
                }

                $context->vars_in_scope['$this'] = new Type\Union([$this_object_type]);

                if ($storage->external_mutation_free
                    && !$storage->mutation_free_inferred
                ) {
                    $context->vars_in_scope['$this']->reference_free = true;

                    if ($this->function->name->name !== '__construct') {
                        $context->vars_in_scope['$this']->allow_mutations = false;
                    }
                }

                $context->vars_possibly_in_scope['$this'] = true;
            }

            if ($appearing_class_storage->has_visitor_issues) {
                return null;
            }

            $cased_method_id = $fq_class_name . '::' . $storage->cased_name;

            $overridden_method_ids = $codebase->methods->getOverriddenMethodIds($method_id);

            if ($this->function->name->name === '__construct') {
                $context->inside_constructor = true;
            }

            $codeLocation = new CodeLocation(
                $this,
                $this->function,
                null,
                true
            );

            if ($overridden_method_ids
                && $this->function->name->name !== '__construct'
                && !$context->collect_initializations
                && !$context->collect_mutations
            ) {
                foreach ($overridden_method_ids as $overridden_method_id) {
                    $parent_method_storage = $codebase->methods->getStorage($overridden_method_id);

                    $overridden_fq_class_name = $overridden_method_id->fq_class_name;

                    $parent_storage = $classlike_storage_provider->get($overridden_fq_class_name);

                    $implementer_visibility = $storage->visibility;

                    $implementer_appearing_method_id = $codebase->methods->getAppearingMethodId($method_id);
                    $implementer_declaring_method_id = $real_method_id;

                    $declaring_class_storage = $appearing_class_storage;

                    if ($implementer_appearing_method_id
                        && $implementer_appearing_method_id !== $implementer_declaring_method_id
                    ) {
                        $appearing_fq_class_name = $implementer_appearing_method_id->fq_class_name;
                        $appearing_method_name = $implementer_appearing_method_id->method_name;

                        $declaring_fq_class_name = $implementer_declaring_method_id->fq_class_name;

                        $appearing_class_storage = $classlike_storage_provider->get(
                            $appearing_fq_class_name
                        );

                        $declaring_class_storage = $classlike_storage_provider->get(
                            $declaring_fq_class_name
                        );

                        if (isset($appearing_class_storage->trait_visibility_map[$appearing_method_name])) {
                            $implementer_visibility
                                = $appearing_class_storage->trait_visibility_map[$appearing_method_name];
                        }
                    }

                    // we've already checked this in the class checker
                    if (!isset($appearing_class_storage->class_implements[strtolower($overridden_fq_class_name)])) {
                        MethodComparator::compare(
                            $codebase,
                            $declaring_class_storage,
                            $parent_storage,
                            $storage,
                            $parent_method_storage,
                            $fq_class_name,
                            $implementer_visibility,
                            $codeLocation,
                            $storage->suppressed_issues
                        );
                    }

                    foreach ($parent_method_storage->params as $i => $guide_param) {
                        if ($guide_param->type
                            && (!$guide_param->signature_type
                                || ($guide_param->signature_type !== $guide_param->type
                                    && $storage->inheritdoc)
                                || !$parent_storage->user_defined
                            )
                        ) {
                            if (!isset($implemented_docblock_param_types[$i])) {
                                $implemented_docblock_param_types[$i] = $guide_param->type;
                            }
                        }
                    }
                }
            }

            MethodAnalyzer::checkMethodSignatureMustOmitReturnType($storage, $codeLocation);

            if (!$context->calling_method_id || !$context->collect_initializations) {
                $context->calling_method_id = strtolower((string) $method_id);
            }
        } elseif ($this->function instanceof Function_) {
            $function_name = $this->function->name->name;
            $namespace_prefix = $this->getNamespace();
            $cased_method_id = ($namespace_prefix !== null ? $namespace_prefix . '\\' : '') . $function_name;
            $context->calling_function_id = strtolower($cased_method_id);
        } else { // Closure
            if ($storage->return_type) {
                $closure_return_type = \Psalm\Internal\Type\TypeExpander::expandUnion(
                    $codebase,
                    $storage->return_type,
                    $context->self,
                    $context->self,
                    $this->getParentFQCLN()
                );
            } else {
                $closure_return_type = Type::getMixed();
            }

            $closure_type = new Type\Atomic\TFn(
                'Closure',
                $storage->params,
                $closure_return_type
            );

            if ($storage instanceof FunctionStorage) {
                $closure_type->byref_uses = $storage->byref_uses;
            }

            $type_provider->setType(
                $this->function,
                new Type\Union([
                    $closure_type,
                ])
            );
        }

        $this->suppressed_issues = $this->getSource()->getSuppressedIssues() + $storage->suppressed_issues;

        if ($storage instanceof MethodStorage && $storage->is_static) {
            $this->is_static = true;
        }

        $statements_analyzer = new StatementsAnalyzer($this, $type_provider);

        if ($byref_uses) {
            $statements_analyzer->setByRefUses($byref_uses);
        }

        if ($storage->template_types) {
            foreach ($storage->template_types as $param_name => $_) {
                $fq_classlike_name = Type::getFQCLNFromString(
                    $param_name,
                    $this->getAliases()
                );

                if ($codebase->classOrInterfaceExists($fq_classlike_name)) {
                    if (IssueBuffer::accepts(
                        new ReservedWord(
                            'Cannot use ' . $param_name . ' as template name since the class already exists',
                            new CodeLocation($this, $this->function),
                            'resource'
                        ),
                        $this->getSuppressedIssues()
                    )) {
                        // fall through
                    }
                }
            }
        }

        $template_types = $storage->template_types;

        if ($appearing_class_storage && $appearing_class_storage->template_types) {
            $template_types = array_merge($template_types ?: [], $appearing_class_storage->template_types);
        }

        $params = $storage->params;

        if ($storage instanceof MethodStorage) {
            $non_null_param_types = array_filter(
                $storage->params,
                /** @return bool */
                function (FunctionLikeParameter $p) {
                    return $p->type !== null && $p->has_docblock_type;
                }
            );
        } else {
            $non_null_param_types = array_filter(
                $storage->params,
                /** @return bool */
                function (FunctionLikeParameter $p) {
                    return $p->type !== null;
                }
            );
        }

        if ($storage instanceof MethodStorage
            && $method_id instanceof \Psalm\Internal\MethodIdentifier
            && $overridden_method_ids
        ) {
            $types_without_docblocks = array_filter(
                $storage->params,
                /** @return bool */
                function (FunctionLikeParameter $p) {
                    return !$p->type || !$p->has_docblock_type;
                }
            );

            if ($types_without_docblocks) {
                $params = $codebase->methods->getMethodParams(
                    $method_id,
                    $this
                );
            }
        }

        if ($codebase->alter_code) {
            $this->alterParams($codebase, $storage, $params, $context);
        }

        foreach ($codebase->methods_to_rename as $original_method_id => $new_method_name) {
            if ($this->function instanceof ClassMethod
                && $this instanceof MethodAnalyzer
                && strtolower((string) $this->getMethodId()) === $original_method_id
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
            ) {
                $file_manipulations = [
                    new \Psalm\FileManipulation(
                        (int) $this->function->name->getAttribute('startFilePos'),
                        (int) $this->function->name->getAttribute('endFilePos') + 1,
                        $new_method_name
                    )
                ];

                \Psalm\Internal\FileManipulation\FileManipulationBuffer::add(
                    $this->getFilePath(),
                    $file_manipulations
                );
            }
        }

        $check_stmts = $this->processParams(
            $statements_analyzer,
            $storage,
            $cased_method_id,
            $params,
            $context,
            $implemented_docblock_param_types,
            (bool) $non_null_param_types,
            (bool) $template_types
        );

        if ($storage->pure) {
            $context->pure = true;
        }

        if ($storage->mutation_free
            && $cased_method_id
            && !strpos($cased_method_id, '__construct')
            && !($storage instanceof MethodStorage && $storage->mutation_free_inferred)
        ) {
            $context->mutation_free = true;
        }

        if ($storage instanceof MethodStorage
            && $storage->external_mutation_free
            && !$storage->mutation_free_inferred
        ) {
            $context->external_mutation_free = true;
        }

        if ($storage->unused_docblock_params) {
            foreach ($storage->unused_docblock_params as $param_name => $param_location) {
                if (IssueBuffer::accepts(
                    new InvalidDocblockParamName(
                        'Incorrect param name $' . $param_name . ' in docblock for ' . $cased_method_id,
                        $param_location
                    )
                )) {
                }
            }
        }

        if ($storage->signature_return_type && $storage->signature_return_type_location) {
            list($start, $end) = $storage->signature_return_type_location->getSelectionBounds();

            $codebase->analyzer->addOffsetReference(
                $this->getFilePath(),
                $start,
                $end,
                (string) $storage->signature_return_type
            );
        }

        if (ReturnTypeAnalyzer::checkReturnType(
            $this->function,
            $project_analyzer,
            $this,
            $storage,
            $context
        ) === false) {
            $check_stmts = false;
        }

        if (!$check_stmts) {
            return false;
        }

        if ($context->collect_initializations || $context->collect_mutations) {
            $statements_analyzer->addSuppressedIssues([
                'DocblockTypeContradiction',
                'InvalidReturnStatement',
                'RedundantCondition',
                'RedundantConditionGivenDocblockType',
                'TypeDoesNotContainNull',
                'TypeDoesNotContainType',
                'LoopInvalidation',
            ]);

            if ($context->collect_initializations) {
                $statements_analyzer->addSuppressedIssues([
                    'UndefinedInterfaceMethod',
                    'UndefinedMethod',
                    'PossiblyUndefinedMethod',
                ]);
            }
        } elseif ($cased_method_id && strpos($cased_method_id, '__destruct')) {
            $statements_analyzer->addSuppressedIssues([
                'InvalidPropertyAssignmentValue',
                'PossiblyNullPropertyAssignmentValue',
            ]);
        }

        $statements_analyzer->analyze($function_stmts, $context, $global_context, true);

        $this->examineParamTypes($statements_analyzer, $context, $codebase);

        foreach ($storage->params as $offset => $function_param) {
            // only complain if there's no type defined by a parent type
            if (!$function_param->type
                && $function_param->location
                && !isset($implemented_docblock_param_types[$offset])
            ) {
                if ($this->function instanceof Closure
                    || $this->function instanceof ArrowFunction
                ) {
                    IssueBuffer::accepts(
                        new MissingClosureParamType(
                            'Parameter $' . $function_param->name . ' has no provided type',
                            $function_param->location
                        ),
                        $storage->suppressed_issues + $this->getSuppressedIssues()
                    );
                } else {
                    IssueBuffer::accepts(
                        new MissingParamType(
                            'Parameter $' . $function_param->name . ' has no provided type',
                            $function_param->location
                        ),
                        $storage->suppressed_issues + $this->getSuppressedIssues()
                    );
                }
            }
        }

        if ($this->function instanceof Closure
            || $this->function instanceof ArrowFunction
        ) {
            $this->verifyReturnType(
                $function_stmts,
                $statements_analyzer,
                $storage->return_type,
                $this->source->getFQCLN(),
                $storage->return_type_location,
                $context->has_returned,
                $global_context && $global_context->inside_call
            );

            $closure_yield_types = [];

            $closure_return_types = ReturnTypeCollector::getReturnTypes(
                $codebase,
                $type_provider,
                $function_stmts,
                $closure_yield_types,
                true
            );

            $closure_return_type = $closure_return_types
                ? \Psalm\Type::combineUnionTypeArray(
                    $closure_return_types,
                    $codebase
                )
                : null;

            $closure_yield_type = $closure_yield_types
                ? \Psalm\Type::combineUnionTypeArray(
                    $closure_yield_types,
                    $codebase
                )
                : null;

            if ($closure_return_type || $closure_yield_type) {
                if ($closure_yield_type) {
                    $closure_return_type = $closure_yield_type;
                }

                if (($storage->return_type === $storage->signature_return_type)
                    && (!$storage->return_type
                        || $storage->return_type->hasMixed()
                        || TypeAnalyzer::isContainedBy(
                            $codebase,
                            $closure_return_type,
/** @return stdClass|null */
function mayReturnNull() { }

function doesNotAcceptNull(stdClass $x) { }

// With potential error.
function withoutCheck() {
    $x = mayReturnNull();
    doesNotAcceptNull($x); // Potential error here.
}

// Safe - Alternative 1
function withCheck1() {
    $x = mayReturnNull();
    if ( ! $x instanceof stdClass) {
        throw new \LogicException('$x must be defined.');
    }
    doesNotAcceptNull($x);
}

// Safe - Alternative 2
function withCheck2() {
    $x = mayReturnNull();
    if ($x instanceof stdClass) {
        doesNotAcceptNull($x);
    }
}
                            $storage->return_type
                        ))
                ) {
                    if ($function_type = $statements_analyzer->node_data->getType($this->function)) {
                        /**
                         * @var Type\Atomic\TFn
                         */
                        $closure_atomic = \array_values($function_type->getAtomicTypes())[0];
                        $closure_atomic->return_type = $closure_return_type;
                    }
                }
            }
        }

        if ($codebase->collect_references
            && !$context->collect_initializations
            && !$context->collect_mutations
            && $codebase->find_unused_variables
            && $context->check_variables
        ) {
            $this->checkParamReferences(
                $statements_analyzer,
                $storage,
                $appearing_class_storage,
                $context
            );
        }

        foreach ($storage->throws as $expected_exception => $_) {
            if (($expected_exception === 'self'
                    || $expected_exception === 'static')
                && $context->self
            ) {
                $expected_exception = $context->self;
            }

            if (isset($storage->throw_locations[$expected_exception])) {
                if (ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
                    $statements_analyzer,
                    $expected_exception,
                    $storage->throw_locations[$expected_exception],
                    $context->self,
                    $context->calling_method_id,
                    $statements_analyzer->getSuppressedIssues(),
                    false,
                    false,
                    true,
                    true
                )) {
                    $input_type = new Type\Union([new TNamedObject($expected_exception)]);
                    $container_type = new Type\Union([new TNamedObject('Exception'), new TNamedObject('Throwable')]);

                    if (!TypeAnalyzer::isContainedBy($codebase, $input_type, $container_type)) {
                        if (IssueBuffer::accepts(
                            new \Psalm\Issue\InvalidThrow(
                                'Class supplied for @throws ' . $expected_exception
                                    . ' does not implement Throwable',
                                $storage->throw_locations[$expected_exception],
                                $expected_exception
                            ),
                            $statements_analyzer->getSuppressedIssues()
                        )) {
                            // fall through
                        }
                    }

                    if ($codebase->alter_code) {
                        $codebase->classlikes->handleDocblockTypeInMigration(
                            $codebase,
                            $this,
                            $input_type,
                            $storage->throw_locations[$expected_exception],
                            $context->calling_method_id
                        );
                    }
                }
            }
        }

        foreach ($statements_analyzer->getUncaughtThrows($context) as $possibly_thrown_exception => $codelocations) {
            $is_expected = false;

            foreach ($storage->throws as $expected_exception => $_) {
                if ($expected_exception === $possibly_thrown_exception
                    || $codebase->classExtendsOrImplements($possibly_thrown_exception, $expected_exception)
                ) {
                    $is_expected = true;
                    break;
                }
            }

            if (!$is_expected) {
                foreach ($codelocations as $codelocation) {
                    // issues are suppressed in ThrowAnalyzer, CallAnalyzer, etc.
                    if (IssueBuffer::accepts(
                        new MissingThrowsDocblock(
                            $possibly_thrown_exception . ' is thrown but not caught - please either catch'
                                . ' or add a @throws annotation',
                            $codelocation
                        )
                    )) {
                        // fall through
                    }
                }
            }
        }

        if ($codebase->taint
            && $this->function instanceof ClassMethod
            && $cased_method_id
            && $storage->specialize_call
            && isset($context->vars_in_scope['$this'])
            && $context->vars_in_scope['$this']->parent_nodes
        ) {
            $method_source = TaintNode::getForMethodReturn(
                (string) $method_id,
                $cased_method_id,
                $storage->location
            );

            $codebase->taint->addTaintNode($method_source);

            foreach ($context->vars_in_scope['$this']->parent_nodes as $parent_node) {
                $codebase->taint->addPath(
                    $parent_node,
                    $method_source,
                    '$this'
                );
            }
        }

        if ($add_mutations) {
            if ($this->return_vars_in_scope !== null) {
                $context->vars_in_scope = TypeAnalyzer::combineKeyedTypes(
                    $context->vars_in_scope,
                    $this->return_vars_in_scope
                );
            }

            if ($this->return_vars_possibly_in_scope !== null) {
                $context->vars_possibly_in_scope = array_merge(
                    $context->vars_possibly_in_scope,
                    $this->return_vars_possibly_in_scope
                );
            }

            foreach ($context->vars_in_scope as $var => $_) {
                if (strpos($var, '$this->') !== 0 && $var !== '$this') {
                    unset($context->vars_in_scope[$var]);
                }
            }

            foreach ($context->vars_possibly_in_scope as $var => $_) {
                if (strpos($var, '$this->') !== 0 && $var !== '$this') {
                    unset($context->vars_possibly_in_scope[$var]);
                }
            }

            if ($hash
                && $real_method_id
                && $this instanceof MethodAnalyzer
                && !$context->collect_initializations
            ) {
                $new_hash = md5($real_method_id . '::' . $context->getScopeSummary());

                if ($new_hash === $hash) {
                    self::$no_effects_hashes[$hash] = true;
                }
            }
        }

        $plugin_classes = $codebase->config->after_functionlike_checks;

        if ($plugin_classes) {
            $file_manipulations = [];

            foreach ($plugin_classes as $plugin_fq_class_name) {
                if ($plugin_fq_class_name::afterStatementAnalysis(
                    $this->function,
                    $storage,
                    $this,
                    $codebase,
                    $file_manipulations
                ) === false) {
                    return false;
                }
            }

            if ($file_manipulations) {
                \Psalm\Internal\FileManipulation\FileManipulationBuffer::add(
                    $this->getFilePath(),
                    $file_manipulations
                );
            }
        }

        return null;
    }

    private function checkParamReferences(
        StatementsAnalyzer $statements_analyzer,
        FunctionLikeStorage $storage,
        ?\Psalm\Storage\ClassLikeStorage $class_storage,
        Context $context
    ) : void {
        $codebase = $statements_analyzer->getCodebase();

        $unused_params = [];

        foreach ($statements_analyzer->getUnusedVarLocations() as list($var_name, $original_location)) {
            if (!array_key_exists(substr($var_name, 1), $storage->param_lookup)) {
                continue;
            }

            if (strpos($var_name, '$_') === 0 || (strpos($var_name, '$unused') === 0 && $var_name !== '$unused')) {
                continue;
            }

            $position = array_search(substr($var_name, 1), array_keys($storage->param_lookup), true);

            if ($position === false) {
                throw new \UnexpectedValueException('$position should not be false here');
            }

            if ($storage->params[$position]->by_ref) {
                continue;
            }

            if (!($storage instanceof MethodStorage)
                || !$storage->cased_name
                || $storage->visibility === ClassLikeAnalyzer::VISIBILITY_PRIVATE
            ) {
                if ($this->function instanceof Closure
                    || $this->function instanceof ArrowFunction
                ) {
                    if (IssueBuffer::accepts(
                        new UnusedClosureParam(
                            'Param ' . $var_name . ' is never referenced in this method',
                            $original_location
                        ),
                        $this->getSuppressedIssues()
                    )) {
                        // fall through
                    }
                } else {
                    if (IssueBuffer::accepts(
                        new UnusedParam(
                            'Param ' . $var_name . ' is never referenced in this method',
                            $original_location
                        ),
                        $this->getSuppressedIssues()
                    )) {
                        // fall through
                    }
                }
            } else {
                $fq_class_name = (string)$context->self;

                $class_storage = $codebase->classlike_storage_provider->get($fq_class_name);

                $method_name_lc = strtolower($storage->cased_name);

                if ($storage->abstract) {
                    continue;
                }

                if (isset($class_storage->overridden_method_ids[$method_name_lc])) {
                    $parent_method_id = end($class_storage->overridden_method_ids[$method_name_lc]);

                    if ($parent_method_id) {
                        $parent_method_storage = $codebase->methods->getStorage($parent_method_id);

                        // if the parent method has a param at that position and isn't abstract
                        if (!$parent_method_storage->abstract
                            && isset($parent_method_storage->params[$position])
                        ) {
                            continue;
                        }
                    }
                }

                $unused_params[$position] = $original_location;
            }
        }

        if ($storage instanceof MethodStorage
            && $this instanceof MethodAnalyzer
            && $class_storage
            && $storage->cased_name
            && $storage->visibility !== ClassLikeAnalyzer::VISIBILITY_PRIVATE
        ) {
            $method_id_lc = strtolower((string) $this->getMethodId());
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}

            foreach ($storage->params as $i => $_) {
                if (!isset($unused_params[$i])) {
                    $codebase->file_reference_provider->addMethodParamUse(
                        $method_id_lc,
                        $i,
                        $method_id_lc
                    );

                    $method_name_lc = strtolower($storage->cased_name);

                    if (!isset($class_storage->overridden_method_ids[$method_name_lc])) {
                        continue;
                    }

                    foreach ($class_storage->overridden_method_ids[$method_name_lc] as $parent_method_id) {
                        $codebase->file_reference_provider->addMethodParamUse(
                            strtolower((string) $parent_method_id),
                            $i,
                            $method_id_lc
                        );
                    }
                }
            }
        }
    }

    /**
     * @param array<int, \Psalm\Storage\FunctionLikeParameter> $params
     * @param array<int, Type\Union> $implemented_docblock_param_types
     */
    private function processParams(
        StatementsAnalyzer $statements_analyzer,
        FunctionLikeStorage $storage,
        ?string $cased_method_id,
        array $params,
        Context $context,
        array $implemented_docblock_param_types,
        bool $non_null_param_types,
        bool $has_template_types
    ) : bool {
        $check_stmts = true;
        $codebase = $statements_analyzer->getCodebase();
        $project_analyzer = $statements_analyzer->getProjectAnalyzer();

        foreach ($params as $offset => $function_param) {
            $signature_type = $function_param->signature_type;
            $signature_type_location = $function_param->signature_type_location;

            if ($signature_type && $signature_type_location && $signature_type->hasObjectType()) {
                $referenced_type = $signature_type;
                if ($referenced_type->isNullable()) {
                    $referenced_type = clone $referenced_type;
                    $referenced_type->removeType('null');
                }
                list($start, $end) = $signature_type_location->getSelectionBounds();
                $codebase->analyzer->addOffsetReference(
                    $this->getFilePath(),
                    $start,
                    $end,
                    (string) $referenced_type
                );
            }

            if ($signature_type) {
                $signature_type = \Psalm\Internal\Type\TypeExpander::expandUnion(
                    $codebase,
                    $signature_type,
                    $context->self,
                    $context->self,
                    $this->getParentFQCLN()
                );
            }

            if ($function_param->type) {
                $is_signature_type = $function_param->type === $function_param->signature_type;

                if ($is_signature_type
                    && $storage instanceof MethodStorage
                    && $storage->inheritdoc
                    && isset($implemented_docblock_param_types[$offset])
                ) {
                    $param_type = clone $implemented_docblock_param_types[$offset];
                } else {
                    $param_type = clone $function_param->type;
                }

                $param_type = \Psalm\Internal\Type\TypeExpander::expandUnion(
                    $codebase,
                    $param_type,
                    $context->self,
                    $context->self,
                    $this->getParentFQCLN()
                );

                if ($function_param->type_location) {
                    if ($param_type->check(
                        $this,
                        $function_param->type_location,
                        $storage->suppressed_issues,
                        [],
                        false,
                        false,
                        $this->function instanceof ClassMethod
                            && strtolower($this->function->name->name) !== '__construct'
                    ) === false) {
                        $check_stmts = false;
                    }
                }
            } else {
                if (!$non_null_param_types && isset($implemented_docblock_param_types[$offset])) {
                    $param_type = clone $implemented_docblock_param_types[$offset];

                    $param_type = \Psalm\Internal\Type\TypeExpander::expandUnion(
                        $codebase,
                        $param_type,
                        $context->self,
                        $context->self,
                        $this->getParentFQCLN()
                    );
                } else {
                    $param_type = Type::getMixed();
                }
            }

            if ($param_type->hasTemplate() && $param_type->isSingle()) {
                /** @var Type\Atomic\TTemplateParam */
                $template_type = \array_values($param_type->getAtomicTypes())[0];

                if ($template_type->as->getTemplateTypes()) {
                    $param_type = $template_type->as;
                }
            }

            $var_type = $param_type;

            if ($function_param->is_variadic) {
                $var_type = new Type\Union([
                    new Type\Atomic\TList($param_type),
                ]);
            }

            if ($cased_method_id && $codebase->taint) {
                $type_source = TaintNode::getForMethodArgument(
                    $cased_method_id,
                    $cased_method_id,
                    $offset,
                    $function_param->location,
                    null
                );
                $var_type->parent_nodes = [$type_source];
            }

            $context->vars_in_scope['$' . $function_param->name] = $var_type;
            $context->vars_possibly_in_scope['$' . $function_param->name] = true;

            if ($codebase->find_unused_variables && $function_param->location) {
                $context->unreferenced_vars['$' . $function_param->name] = [
                    $function_param->location->getHash() => $function_param->location
                ];
            }

            if ($function_param->by_ref) {
                $context->vars_in_scope['$' . $function_param->name]->by_ref = true;
            }

            $parser_param = $this->function->getParams()[$offset];

            if (!$function_param->type_location || !$function_param->location) {
                if ($parser_param->default) {
                    ExpressionAnalyzer::analyze($statements_analyzer, $parser_param->default, $context);
                }

                continue;
            }

            if ($signature_type) {
                $union_comparison_result = new TypeComparisonResult();

                if (!TypeAnalyzer::isContainedBy(
                    $codebase,
                    $param_type,
                    $signature_type,
                    false,
                    false,
                    $union_comparison_result
                ) && !$union_comparison_result->type_coerced_from_mixed
                ) {
                    if ($codebase->alter_code
                        && isset($project_analyzer->getIssuesToFix()['MismatchingDocblockParamType'])
                    ) {
                        $this->addOrUpdateParamType($project_analyzer, $function_param->name, $signature_type, true);

                        continue;
                    }

                    if (IssueBuffer::accepts(
                        new MismatchingDocblockParamType(
                            'Parameter $' . $function_param->name . ' has wrong type \'' . $param_type .
                                '\', should be \'' . $signature_type . '\'',
                            $function_param->type_location
                        ),
                        $storage->suppressed_issues,
                        true
                    )) {
                        // do nothing
                    }

                    if ($signature_type->check(
                        $this,
                        $function_param->type_location,
                        $storage->suppressed_issues,
                        [],
                        false
                    ) === false) {
                        $check_stmts = false;
                    }

                    continue;
                }
            }

            if ($parser_param->default) {
                ExpressionAnalyzer::analyze($statements_analyzer, $parser_param->default, $context);

                $default_type = $statements_analyzer->node_data->getType($parser_param->default);

                if ($default_type
                    && !$default_type->hasMixed()
                    && !TypeAnalyzer::isContainedBy(
                        $codebase,
                        $default_type,
                        $param_type,
                        false,
                        false,
                        null,
                        true
                    )
                ) {
                    if (IssueBuffer::accepts(
                        new InvalidParamDefault(
                            'Default value type ' . $default_type->getId() . ' for argument ' . ($offset + 1)
                                . ' of method ' . $cased_method_id
                                . ' does not match the given type ' . $param_type->getId(),
                            $function_param->type_location
                        )
                    )) {
                        // fall through
                    }
                }
            }

            if ($has_template_types) {
                $substituted_type = clone $param_type;
                if ($substituted_type->check(
                    $this->source,
                    $function_param->type_location,
                    $this->suppressed_issues,
                    [],
                    false
                ) === false) {
                    $check_stmts = false;
                }
            } else {
                if ($param_type->isVoid()) {
                    if (IssueBuffer::accepts(
                        new ReservedWord(
                            'Parameter cannot be void',
                            $function_param->type_location,
                            'void'
                        ),
                        $this->suppressed_issues
                    )) {
                        // fall through
                    }
                }

                if ($param_type->check(
                    $this->source,
                    $function_param->type_location,
                    $this->suppressed_issues,
                    [],
                    false
                ) === false) {
                    $check_stmts = false;
                }
            }

            if ($codebase->collect_locations) {
                if ($function_param->type_location !== $function_param->signature_type_location &&
                    $function_param->signature_type_location &&
                    $function_param->signature_type
                ) {
                    if ($function_param->signature_type->check(
                        $this->source,
                        $function_param->signature_type_location,
                        $this->suppressed_issues,
                        [],
                        false
                    ) === false) {
                        $check_stmts = false;
                    }
                }
            }

            if ($function_param->by_ref) {
                // register by ref params as having been used, to avoid false positives
                // @todo change the assignment analysis *just* for byref params
                // so that we don't have to do this
                $context->hasVariable('$' . $function_param->name);
            }

            $statements_analyzer->registerVariable(
                '$' . $function_param->name,
                $function_param->location,
                null
            );
        }

        return $check_stmts;
    }

    /**
     * @param \Psalm\Storage\FunctionLikeParameter[] $params
     */
    private function alterParams(
        Codebase $codebase,
        FunctionLikeStorage $storage,
        array $params,
        Context $context
    ) : void {
        foreach ($this->function->params as $param) {
            $param_name_node = null;

            if ($param->type instanceof PhpParser\Node\Name) {
                $param_name_node = $param->type;
            } elseif ($param->type instanceof PhpParser\Node\NullableType
                && $param->type->type instanceof PhpParser\Node\Name
            ) {
                $param_name_node = $param->type->type;
            }

            if ($param_name_node) {
                $resolved_name = ClassLikeAnalyzer::getFQCLNFromNameObject($param_name_node, $this->getAliases());

                $parent_fqcln = $this->getParentFQCLN();

                if ($resolved_name === 'self' && $context->self) {
                    $resolved_name = (string) $context->self;
                } elseif ($resolved_name === 'parent' && $parent_fqcln) {
                    $resolved_name = $parent_fqcln;
                }

                $codebase->classlikes->handleClassLikeReferenceInMigration(
                    $codebase,
                    $this,
                    $param_name_node,
                    $resolved_name,
                    $context->calling_method_id,
                    false,
                    true
                );
            }
        }

        if ($this->function->returnType) {
            $return_name_node = null;

            if ($this->function->returnType instanceof PhpParser\Node\Name) {
                $return_name_node = $this->function->returnType;
            } elseif ($this->function->returnType instanceof PhpParser\Node\NullableType
                && $this->function->returnType->type instanceof PhpParser\Node\Name
            ) {
                $return_name_node = $this->function->returnType->type;
            }

            if ($return_name_node) {
                $resolved_name = ClassLikeAnalyzer::getFQCLNFromNameObject($return_name_node, $this->getAliases());

                $parent_fqcln = $this->getParentFQCLN();

                if ($resolved_name === 'self' && $context->self) {
                    $resolved_name = (string) $context->self;
                } elseif ($resolved_name === 'parent' && $parent_fqcln) {
                    $resolved_name = $parent_fqcln;
                }

                $codebase->classlikes->handleClassLikeReferenceInMigration(
                    $codebase,
                    $this,
                    $return_name_node,
                    $resolved_name,
                    $context->calling_method_id,
                    false,
                    true
                );
            }
        }

        if ($storage->return_type
            && $storage->return_type_location
            && $storage->return_type_location !== $storage->signature_return_type_location
        ) {
            $replace_type = \Psalm\Internal\Type\TypeExpander::expandUnion(
                $codebase,
                $storage->return_type,
                $context->self,
                'static',
                $this->getParentFQCLN(),
                false
            );

            $codebase->classlikes->handleDocblockTypeInMigration(
                $codebase,
                $this,
                $replace_type,
                $storage->return_type_location,
                $context->calling_method_id
            );
        }

        foreach ($params as $function_param) {
            if ($function_param->type
                && $function_param->type_location
                && $function_param->type_location !== $function_param->signature_type_location
                && $function_param->type_location->file_path === $this->getFilePath()
            ) {
                $replace_type = \Psalm\Internal\Type\TypeExpander::expandUnion(
                    $codebase,
                    $function_param->type,
                    $context->self,
                    'static',
                    $this->getParentFQCLN(),
                    false
                );

                $codebase->classlikes->handleDocblockTypeInMigration(
                    $codebase,
                    $this,
                    $replace_type,
                    $function_param->type_location,
                    $context->calling_method_id
                );
            }
        }
    }

    /**
     * @param array<PhpParser\Node\Stmt> $function_stmts
     * @param Type\Union|null     $return_type
     * @param string              $fq_class_name
     * @param CodeLocation|null   $return_type_location
     *
     * @return  false|null
     */
    public function verifyReturnType(
        array $function_stmts,
        StatementsAnalyzer $statements_analyzer,
        Type\Union $return_type = null,
        $fq_class_name = null,
        CodeLocation $return_type_location = null,
        bool $did_explicitly_return = false,
        bool $closure_inside_call = false
    ) {
        ReturnTypeAnalyzer::verifyReturnType(
            $this->function,
            $function_stmts,
            $statements_analyzer,
            $statements_analyzer->node_data,
            $this,
            $return_type,
            $fq_class_name,
            $return_type_location,
            [],
            $did_explicitly_return,
            $closure_inside_call
        );
    }

    /**
     * @param string $param_name
     * @param bool $docblock_only
     *
     * @return void
     */
    public function addOrUpdateParamType(
        ProjectAnalyzer $project_analyzer,
        $param_name,
        Type\Union $inferred_return_type,
        $docblock_only = false
    ) {
        $manipulator = FunctionDocblockManipulator::getForFunction(
            $project_analyzer,
            $this->source->getFilePath(),
            $this->getId(),
            $this->function
        );

        $codebase = $project_analyzer->getCodebase();
        $is_final = true;
        $fqcln = $this->source->getFQCLN();

        if ($fqcln !== null && $this->function instanceof ClassMethod) {
            $class_storage = $codebase->classlike_storage_provider->get($fqcln);
            $is_final = $this->function->isFinal() || $class_storage->final;
class A
{
    public function foo() { }
}

class B extends A
{
    public function bar() { }
}

/**
 * @param A|B $x
 */
function someFunction($x)
{
    $x->foo(); // This call is fine as the method exists in A and B.
    $x->bar(); // This method only exists in B and might cause an error.
}
        }

        $allow_native_type = !$docblock_only
            && $codebase->php_major_version >= 7
            && (
                $codebase->allow_backwards_incompatible_changes
                || $is_final
                || !$this->function instanceof PhpParser\Node\Stmt\ClassMethod
            );

        $manipulator->setParamType(
            $param_name,
            $allow_native_type
                ? $inferred_return_type->toPhpString(
                    $this->source->getNamespace(),
                    $this->source->getAliasedClassesFlipped(),
                    $this->source->getFQCLN(),
                    $project_analyzer->getCodebase()->php_major_version,
                    $project_analyzer->getCodebase()->php_minor_version
                ) : null,
            $inferred_return_type->toNamespacedString(
                $this->source->getNamespace(),
                $this->source->getAliasedClassesFlipped(),
                $this->source->getFQCLN(),
                false
            ),
            $inferred_return_type->toNamespacedString(
                $this->source->getNamespace(),
                $this->source->getAliasedClassesFlipped(),
                $this->source->getFQCLN(),
                true
            )
        );
    }

    /**
     * Adds return types for the given function
     *
     * @param   string  $return_type
/**
 * @param array $germany
 * @param array $island
 * @param array $italy
 */
function finale($germany, $island) {
    return "2:1";
}
     * @param   Context $context
     *
     * @return  void
     */
    public function addReturnTypes(Context $context)
    {
        if ($this->return_vars_in_scope !== null) {
            $this->return_vars_in_scope = TypeAnalyzer::combineKeyedTypes(
                $context->vars_in_scope,
                $this->return_vars_in_scope
            );
        } else {
            $this->return_vars_in_scope = $context->vars_in_scope;
        }

        if ($this->return_vars_possibly_in_scope !== null) {
            $this->return_vars_possibly_in_scope = array_merge(
                $context->vars_possibly_in_scope,
                $this->return_vars_possibly_in_scope
            );
        } else {
            $this->return_vars_possibly_in_scope = $context->vars_possibly_in_scope;
        }
    }

    /**
     * @return void
     */
    public function examineParamTypes(
        StatementsAnalyzer $statements_analyzer,
        Context $context,
        Codebase $codebase,
        PhpParser\Node $stmt = null
    ) {
        $storage = $this->getFunctionLikeStorage($statements_analyzer);

        foreach ($storage->params as $param) {
            if ($param->by_ref && isset($context->vars_in_scope['$' . $param->name]) && !$param->is_variadic) {
                $actual_type = $context->vars_in_scope['$' . $param->name];
                $param_out_type = $param->out_type ?: $param->type;

                if ($param_out_type && !$actual_type->hasMixed() && $param->location) {
                    if (!TypeAnalyzer::isContainedBy(
                        $codebase,
                        $actual_type,
                        $param_out_type,
                        $actual_type->ignore_nullable_issues,
                        $actual_type->ignore_falsable_issues
                    )
                    ) {
                        if (IssueBuffer::accepts(
                            new ReferenceConstraintViolation(
                                'Variable ' . '$' . $param->name . ' is limited to values of type '
                                    . $param_out_type->getId()
                                    . ' because it is passed by reference, '
                                    . $actual_type->getId() . ' type found. Use @param-out to specify '
                                    . 'a different output type',
                                $stmt
                                    ? new CodeLocation($this, $stmt)
                                    : $param->location
                            ),
                            $statements_analyzer->getSuppressedIssues()
                        )) {
                            // fall through
                        }
                    }
                }
            }
        }
    }

    /**
     * @return null|string
     */
    public function getMethodName()
    {
        if ($this->function instanceof ClassMethod) {
            return (string)$this->function->name;
        }
    }

    /**
     * @param string|null $context_self
     *
     * @return string
     */
    public function getCorrectlyCasedMethodId($context_self = null)
    {
        if ($this->function instanceof ClassMethod) {
            $function_name = (string)$this->function->name;

            return ($context_self ?: $this->source->getFQCLN()) . '::' . $function_name;
        }

        if ($this->function instanceof Function_) {
            $namespace = $this->source->getNamespace();

            return ($namespace ? $namespace . '\\' : '') . $this->function->name;
        }

        if (!$this instanceof ClosureAnalyzer) {
            throw new \UnexpectedValueException('This is weird');
        }

        return $this->getClosureId();
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
    }

    /**
     * @return FunctionLikeStorage
     */
    public function getFunctionLikeStorage(StatementsAnalyzer $statements_analyzer = null)
    {
        $codebase = $this->codebase;

        if ($this->function instanceof ClassMethod && $this instanceof MethodAnalyzer) {
            $method_id = $this->getMethodId();
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
            $codebase_methods = $codebase->methods;

            try {
                return $codebase_methods->getStorage($method_id);
            } catch (\UnexpectedValueException $e) {
                $declaring_method_id = $codebase_methods->getDeclaringMethodId($method_id);

                if ($declaring_method_id === null) {
                    throw new \UnexpectedValueException('Cannot get storage for function that doesn‘t exist');
                }

                // happens for fake constructors
                return $codebase_methods->getStorage($declaring_method_id);
            }
        }

        if ($this instanceof FunctionAnalyzer) {
            $function_id = $this->getFunctionId();
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
        } elseif ($this instanceof ClosureAnalyzer) {
            $function_id = $this->getClosureId();
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
        } else {
            throw new \UnexpectedValueException('This is weird');
        }

        return $codebase->functions->getStorage($statements_analyzer, $function_id);
    }

    /** @return non-empty-string */

    public function getId() : string
    {
        if ($this instanceof MethodAnalyzer) {
            return (string) $this->getMethodId();
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
        }

        if ($this instanceof FunctionAnalyzer) {
            return $this->getFunctionId();
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
        }

        if ($this instanceof ClosureAnalyzer) {
            return $this->getClosureId();
abstract class User
{
    /** @return string */
    abstract public function getPassword();
}

class MyUser extends User
{
    public function getPassword()
    {
        // return something
    }

    public function getDisplayName()
    {
        // return some name.
    }
}

class AuthSystem
{
    public function authenticate(User $user)
    {
        $this->logger->info(sprintf('Authenticating %s.', $user->getDisplayName()));
        // do something.
    }
}
        }

        throw new \UnexpectedValueException('This is weird');
    }

    /**
     * @return array<string, string>

     */
    public function getAliasedClassesFlipped()
    {
        if ($this->source instanceof NamespaceAnalyzer ||
            $this->source instanceof FileAnalyzer ||
            $this->source instanceof ClassLikeAnalyzer
        ) {
            return $this->source->getAliasedClassesFlipped();
        }

        return [];
    }

    /**
     * @return array<string, string>

     */
    public function getAliasedClassesFlippedReplaceable()
    {
        if ($this->source instanceof NamespaceAnalyzer ||
            $this->source instanceof FileAnalyzer ||
            $this->source instanceof ClassLikeAnalyzer
        ) {
            return $this->source->getAliasedClassesFlippedReplaceable();
        }

        return [];
    }

    /**
     * @return string|null
     */
    public function getFQCLN()
    {
        return $this->source->getFQCLN();
    }

    /**
     * @return null|string
     */
    public function getClassName()
    {
        return $this->source->getClassName();
    }

    /**
     * @return array<string, array<string, array{Type\Union}>>|null

     */
    public function getTemplateTypeMap()
    {
        if ($this->source instanceof ClassLikeAnalyzer) {
            return ($this->source->getTemplateTypeMap() ?: [])
                + ($this->storage->template_types ?: []);
        }

        return $this->storage->template_types;
    }

    /**
     * @return string|null
     */
    public function getParentFQCLN()
    {
        return $this->source->getParentFQCLN();
    }

    public function getNodeTypeProvider() : \Psalm\NodeTypeProvider
    {
        return $this->source->getNodeTypeProvider();
    }

    /**
     * @return bool
     */
    public function isStatic()
    {
        return $this->is_static;
    }

    /**
     * @return StatementsSource
     */
    public function getSource()
    {
        return $this->source;
    }

    public function getCodebase() : Codebase
    {
        return $this->codebase;
    }

    /**
     * Get a list of suppressed issues
     *
     * @return array<string>
     */
    public function getSuppressedIssues()
    {
        return $this->suppressed_issues;
    }

    /**
     * @param array<int, string> $new_issues
     *
     * @return void
     */
    public function addSuppressedIssues(array $new_issues)
    {
        if (isset($new_issues[0])) {
            $new_issues = \array_combine($new_issues, $new_issues);
        }

        $this->suppressed_issues = $new_issues + $this->suppressed_issues;
    }

    /**
     * @param array<int, string> $new_issues
     *
     * @return void
     */
    public function removeSuppressedIssues(array $new_issues)
    {
        if (isset($new_issues[0])) {
            $new_issues = \array_combine($new_issues, $new_issues);
        }

        $this->suppressed_issues = \array_diff_key($this->suppressed_issues, $new_issues);
    }

    /**
     * Adds a suppressed issue, useful when creating a method checker from scratch
     *
     * @param string $issue_name
     *
     * @return void
     */
    public function addSuppressedIssue($issue_name)
    {
        $this->suppressed_issues[] = $issue_name;
    }

    /**
     * @return void
     */
    public static function clearCache()
    {
        self::$no_effects_hashes = [];
    }

    /**
     * @return Type\Union
     */
    public function getLocalReturnType(Type\Union $storage_return_type, bool $final = false)
    {
        if ($this->local_return_type) {
            return $this->local_return_type;
        }

        $this->local_return_type = \Psalm\Internal\Type\TypeExpander::expandUnion(
            $this->codebase,
            $storage_return_type,
            $this->getFQCLN(),
            $this->getFQCLN(),
            $this->getParentFQCLN(),
            true,
            true,
            $final
        );

        return $this->local_return_type;
    }
}

FunctionLikeAnalyzer::alterParams() F
last analyzed 2020-07-20 09:18 UTC

Complexity

Size

Duplication

Importance

How to fix Long Method Complexity

Long Method

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

vimeo / psalm

FunctionLikeAnalyzer::alterParams() F last analyzed 2020-07-20 09:18 UTC

Complexity

Size

Duplication

Importance

How to fix Long Method Complexity

Long Method

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Available Fixes

Duplication Side-by-Side

Filter issues like

FunctionLikeAnalyzer::alterParams() F
last analyzed 2020-07-20 09:18 UTC
