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ClassLikeNodeScanner.php
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ClassLikeNodeScanner.php
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<?php
namespace Psalm\Internal\PhpVisitor\Reflector;
use Exception;
use InvalidArgumentException;
use LogicException;
use PhpParser;
use PhpParser\Node\Expr\BinaryOp\Concat;
use PhpParser\Node\Identifier;
use PhpParser\Node\IntersectionType;
use PhpParser\Node\Name;
use PhpParser\Node\NullableType;
use PhpParser\Node\UnionType;
use Psalm\Aliases;
use Psalm\CodeLocation;
use Psalm\CodeLocation\DocblockTypeLocation;
use Psalm\Codebase;
use Psalm\Config;
use Psalm\DocComment;
use Psalm\Exception\DocblockParseException;
use Psalm\Exception\IncorrectDocblockException;
use Psalm\Exception\InvalidClasslikeOverrideException;
use Psalm\Exception\TypeParseTreeException;
use Psalm\Internal\Analyzer\ClassAnalyzer;
use Psalm\Internal\Analyzer\ClassLikeAnalyzer;
use Psalm\Internal\Analyzer\CommentAnalyzer;
use Psalm\Internal\Analyzer\NamespaceAnalyzer;
use Psalm\Internal\Analyzer\Statements\Expression\SimpleTypeInferer;
use Psalm\Internal\Codebase\PropertyMap;
use Psalm\Internal\MethodIdentifier;
use Psalm\Internal\Provider\NodeDataProvider;
use Psalm\Internal\Scanner\ClassLikeDocblockComment;
use Psalm\Internal\Scanner\FileScanner;
use Psalm\Internal\Type\TypeAlias;
use Psalm\Internal\Type\TypeAlias\ClassTypeAlias;
use Psalm\Internal\Type\TypeAlias\InlineTypeAlias;
use Psalm\Internal\Type\TypeAlias\LinkableTypeAlias;
use Psalm\Internal\Type\TypeParser;
use Psalm\Internal\Type\TypeTokenizer;
use Psalm\Issue\DuplicateClass;
use Psalm\Issue\DuplicateConstant;
use Psalm\Issue\DuplicateEnumCase;
use Psalm\Issue\InvalidDocblock;
use Psalm\Issue\InvalidEnumBackingType;
use Psalm\Issue\InvalidTypeImport;
use Psalm\Issue\MissingDocblockType;
use Psalm\Issue\ParseError;
use Psalm\IssueBuffer;
use Psalm\Storage\AttributeStorage;
use Psalm\Storage\ClassConstantStorage;
use Psalm\Storage\ClassLikeStorage;
use Psalm\Storage\EnumCaseStorage;
use Psalm\Storage\FileStorage;
use Psalm\Storage\MethodStorage;
use Psalm\Storage\PropertyStorage;
use Psalm\Type;
use Psalm\Type\Atomic\TGenericObject;
use Psalm\Type\Atomic\TNamedObject;
use Psalm\Type\Atomic\TNull;
use Psalm\Type\Atomic\TString;
use Psalm\Type\Atomic\TTemplateParam;
use Psalm\Type\Union;
use RuntimeException;
use UnexpectedValueException;
use function array_filter;
use function array_map;
use function array_merge;
use function array_pop;
use function array_shift;
use function array_values;
use function count;
use function explode;
use function get_class;
use function implode;
use function preg_match;
use function preg_replace;
use function preg_split;
use function str_replace;
use function strtolower;
use function trim;
use function usort;
use const PREG_SPLIT_DELIM_CAPTURE;
use const PREG_SPLIT_NO_EMPTY;
/**
* @internal
*/
class ClassLikeNodeScanner
{
/**
* @var FileScanner
*/
private $file_scanner;
/**
* @var Codebase
*/
private $codebase;
/**
* @var string
*/
private $file_path;
/**
* @var Config
*/
private $config;
/**
* @var FileStorage
*/
private $file_storage;
/**
* @var array<string, InlineTypeAlias>
*/
private $classlike_type_aliases = [];
/**
* @var array<string, array<string, Union>>
*/
public $class_template_types = [];
/**
* @var PhpParser\Node\Name|null
*/
private $namespace_name;
/**
* @var Aliases
*/
private $aliases;
/**
* @var ?ClassLikeStorage
*/
public $storage;
/**
* @var array<string, TypeAlias>
*/
public $type_aliases = [];
public function __construct(
Codebase $codebase,
FileStorage $file_storage,
FileScanner $file_scanner,
Aliases $aliases,
?PhpParser\Node\Name $namespace_name
) {
$this->codebase = $codebase;
$this->file_storage = $file_storage;
$this->file_scanner = $file_scanner;
$this->file_path = $file_storage->file_path;
$this->aliases = $aliases;
$this->config = Config::getInstance();
$this->namespace_name = $namespace_name;
}
/**
* @return false|null
*/
public function start(PhpParser\Node\Stmt\ClassLike $node): ?bool
{
$class_location = new CodeLocation($this->file_scanner, $node);
$name_location = null;
$storage = null;
$class_name = null;
$is_classlike_overridden = false;
if ($node->name === null) {
if (!$node instanceof PhpParser\Node\Stmt\Class_) {
throw new LogicException('Anonymous classes are always classes');
}
$fq_classlike_name = ClassAnalyzer::getAnonymousClassName($node, $this->file_path);
} else {
$name_location = new CodeLocation($this->file_scanner, $node->name);
$fq_classlike_name =
($this->aliases->namespace ? $this->aliases->namespace . '\\' : '') . $node->name->name;
$fq_classlike_name_lc = strtolower($fq_classlike_name);
$class_name = $node->name->name;
if ($this->codebase->classlike_storage_provider->has($fq_classlike_name_lc)) {
$duplicate_storage = $this->codebase->classlike_storage_provider->get($fq_classlike_name_lc);
if (!$this->codebase->register_stub_files) {
if (!$duplicate_storage->stmt_location
|| $duplicate_storage->stmt_location->file_path !== $this->file_path
|| $class_location->getHash() !== $duplicate_storage->stmt_location->getHash()
) {
if (IssueBuffer::accepts(
new DuplicateClass(
'Class ' . $fq_classlike_name . ' has already been defined'
. ($duplicate_storage->location
? ' in ' . $duplicate_storage->location->file_path
: ''),
$name_location
)
)) {
}
$this->file_storage->has_visitor_issues = true;
$duplicate_storage->has_visitor_issues = true;
return false;
}
} elseif (!$duplicate_storage->location
|| $duplicate_storage->location->file_path !== $this->file_path
|| $class_location->getHash() !== $duplicate_storage->location->getHash()
) {
$is_classlike_overridden = true;
// we're overwriting some methods
$storage = $this->storage = $duplicate_storage;
$this->codebase->classlike_storage_provider->makeNew(strtolower($fq_classlike_name));
$storage->populated = false;
$storage->class_implements = []; // we do this because reflection reports
$storage->parent_interfaces = [];
$storage->stubbed = true;
$storage->aliases = $this->aliases;
foreach ($storage->dependent_classlikes as $dependent_name_lc => $_) {
try {
$dependent_storage = $this->codebase->classlike_storage_provider->get($dependent_name_lc);
} catch (InvalidArgumentException $exception) {
continue;
}
$dependent_storage->populated = false;
$this->codebase->classlike_storage_provider->makeNew($dependent_name_lc);
}
}
}
}
$fq_classlike_name_lc = strtolower($fq_classlike_name);
$this->file_storage->classlikes_in_file[$fq_classlike_name_lc] = $fq_classlike_name;
if (!$storage) {
$this->storage = $storage = $this->codebase->classlike_storage_provider->create($fq_classlike_name);
}
if ($class_name
&& isset($this->aliases->uses[strtolower($class_name)])
&& $this->aliases->uses[strtolower($class_name)] !== $fq_classlike_name
) {
IssueBuffer::add(
new ParseError(
'Class name ' . $class_name . ' clashes with a use statement alias',
$name_location ?? $class_location
)
);
$storage->has_visitor_issues = true;
$this->file_storage->has_visitor_issues = true;
}
$storage->stmt_location = $class_location;
$storage->location = $name_location;
if ($this->namespace_name) {
$storage->namespace_name_location = new CodeLocation($this->file_scanner, $this->namespace_name);
}
$storage->user_defined = !$this->codebase->register_stub_files;
$storage->stubbed = $this->codebase->register_stub_files;
$storage->aliases = $this->aliases;
if ($node instanceof PhpParser\Node\Stmt\Class_) {
$storage->abstract = $node->isAbstract();
$storage->final = $node->isFinal();
$this->codebase->classlikes->addFullyQualifiedClassName($fq_classlike_name, $this->file_path);
if ($node->extends) {
$parent_fqcln = ClassLikeAnalyzer::getFQCLNFromNameObject($node->extends, $this->aliases);
$parent_fqcln = $this->codebase->classlikes->getUnAliasedName($parent_fqcln);
$this->codebase->scanner->queueClassLikeForScanning(
$parent_fqcln,
$this->file_scanner->will_analyze
);
$parent_fqcln_lc = strtolower($parent_fqcln);
$storage->parent_class = $parent_fqcln;
$storage->parent_classes[$parent_fqcln_lc] = $parent_fqcln;
$this->file_storage->required_classes[strtolower($parent_fqcln)] = $parent_fqcln;
}
} elseif ($node instanceof PhpParser\Node\Stmt\Interface_) {
$storage->is_interface = true;
$this->codebase->classlikes->addFullyQualifiedInterfaceName($fq_classlike_name, $this->file_path);
foreach ($node->extends as $interface) {
$interface_fqcln = ClassLikeAnalyzer::getFQCLNFromNameObject($interface, $this->aliases);
$interface_fqcln = $this->codebase->classlikes->getUnAliasedName($interface_fqcln);
$interface_fqcln_lc = strtolower($interface_fqcln);
$this->codebase->scanner->queueClassLikeForScanning($interface_fqcln);
$storage->parent_interfaces[$interface_fqcln_lc] = $interface_fqcln;
$storage->direct_interface_parents[$interface_fqcln_lc] = $interface_fqcln;
$this->file_storage->required_interfaces[$interface_fqcln_lc] = $interface_fqcln;
}
} elseif ($node instanceof PhpParser\Node\Stmt\Trait_) {
$storage->is_trait = true;
$this->codebase->classlikes->addFullyQualifiedTraitName($fq_classlike_name, $this->file_path);
} elseif ($node instanceof PhpParser\Node\Stmt\Enum_) {
$storage->is_enum = true;
if ($node->scalarType) {
if ($node->scalarType->name === 'string' || $node->scalarType->name === 'int') {
$storage->enum_type = $node->scalarType->name;
} else {
IssueBuffer::maybeAdd(
new InvalidEnumBackingType(
'Enums cannot be backed by ' . $node->scalarType->name . ', string or int expected',
new CodeLocation($this->file_scanner, $node->scalarType),
$fq_classlike_name
)
);
$this->file_storage->has_visitor_issues = true;
$storage->has_visitor_issues = true;
}
$storage->class_implements['backedenum'] = 'BackedEnum';
$storage->direct_class_interfaces['backedenum'] = 'BackedEnum';
$this->file_storage->required_interfaces['backedenum'] = 'BackedEnum';
$this->codebase->scanner->queueClassLikeForScanning('BackedEnum');
$storage->declaring_method_ids['from'] = new MethodIdentifier('BackedEnum', 'from');
$storage->appearing_method_ids['from'] = $storage->declaring_method_ids['from'];
$storage->declaring_method_ids['tryfrom'] = new MethodIdentifier(
'BackedEnum',
'tryfrom'
);
$storage->appearing_method_ids['tryfrom'] = $storage->declaring_method_ids['tryfrom'];
}
$this->codebase->scanner->queueClassLikeForScanning('UnitEnum');
$storage->class_implements['unitenum'] = 'UnitEnum';
$storage->direct_class_interfaces['unitenum'] = 'UnitEnum';
$this->file_storage->required_interfaces['unitenum'] = 'UnitEnum';
$storage->final = true;
$storage->declaring_method_ids['cases'] = new MethodIdentifier(
'UnitEnum',
'cases'
);
$storage->appearing_method_ids['cases'] = $storage->declaring_method_ids['cases'];
$this->codebase->classlikes->addFullyQualifiedEnumName($fq_classlike_name, $this->file_path);
} else {
throw new UnexpectedValueException('Unknown classlike type');
}
if ($node instanceof PhpParser\Node\Stmt\Class_ || $node instanceof PhpParser\Node\Stmt\Enum_) {
foreach ($node->implements as $interface) {
$interface_fqcln = ClassLikeAnalyzer::getFQCLNFromNameObject($interface, $this->aliases);
$interface_fqcln_lc = strtolower($interface_fqcln);
$this->codebase->scanner->queueClassLikeForScanning($interface_fqcln);
$storage->class_implements[$interface_fqcln_lc] = $interface_fqcln;
$storage->direct_class_interfaces[$interface_fqcln_lc] = $interface_fqcln;
$this->file_storage->required_interfaces[$interface_fqcln_lc] = $interface_fqcln;
}
}
$docblock_info = null;
$doc_comment = $node->getDocComment();
if ($doc_comment) {
try {
$docblock_info = ClassLikeDocblockParser::parse(
$node,
$doc_comment,
$this->aliases
);
$this->type_aliases += $this->getImportedTypeAliases($docblock_info, $fq_classlike_name);
} catch (DocblockParseException $e) {
$storage->docblock_issues[] = new InvalidDocblock(
$e->getMessage() . ' in docblock for ' . $fq_classlike_name,
$name_location ?? $class_location
);
}
}
foreach ($node->getComments() as $comment) {
if (!$comment instanceof PhpParser\Comment\Doc) {
continue;
}
try {
$type_aliases = self::getTypeAliasesFromComment(
$comment,
$this->aliases,
$this->type_aliases,
$fq_classlike_name
);
foreach ($type_aliases as $type_alias) {
// finds issues, if there are any
TypeParser::parseTokens($type_alias->replacement_tokens);
}
$this->type_aliases += $type_aliases;
if ($type_aliases) {
$this->classlike_type_aliases = $type_aliases;
}
} catch (DocblockParseException | TypeParseTreeException $e) {
$storage->docblock_issues[] = new InvalidDocblock(
$e->getMessage(),
new CodeLocation($this->file_scanner, $node, null, true)
);
}
}
if ($docblock_info) {
if ($docblock_info->stub_override && !$is_classlike_overridden) {
throw new InvalidClasslikeOverrideException(
'Class/interface/trait ' . $fq_classlike_name . ' is marked as stub override,'
. ' but no original counterpart found'
);
}
if ($docblock_info->templates) {
$storage->template_types = [];
usort(
$docblock_info->templates,
fn(array $l, array $r): int => $l[4] > $r[4] ? 1 : -1
);
foreach ($docblock_info->templates as $i => $template_map) {
$template_name = $template_map[0];
if ($template_map[1] !== null && $template_map[2] !== null) {
if (trim($template_map[2])) {
try {
$template_type = TypeParser::parseTokens(
TypeTokenizer::getFullyQualifiedTokens(
$template_map[2],
$this->aliases,
$storage->template_types,
$this->type_aliases
),
null,
$storage->template_types,
$this->type_aliases
);
} catch (TypeParseTreeException $e) {
$storage->docblock_issues[] = new InvalidDocblock(
$e->getMessage() . ' in docblock for ' . $fq_classlike_name,
$name_location ?? $class_location
);
continue;
}
$storage->template_types[$template_name] = [
$fq_classlike_name => $template_type,
];
} else {
$storage->docblock_issues[] = new InvalidDocblock(
'Template missing as type',
$name_location ?? $class_location
);
}
} else {
/** @psalm-suppress PropertyTypeCoercion due to a Psalm bug */
$storage->template_types[$template_name][$fq_classlike_name] = Type::getMixed();
}
$storage->template_covariants[$i] = $template_map[3];
}
$this->class_template_types = $storage->template_types;
}
foreach ($docblock_info->template_extends as $extended_class_name) {
$this->extendTemplatedType($storage, $node, $extended_class_name);
}
foreach ($docblock_info->template_implements as $implemented_class_name) {
$this->implementTemplatedType($storage, $node, $implemented_class_name);
}
if ($docblock_info->yield) {
try {
$yield_type_tokens = TypeTokenizer::getFullyQualifiedTokens(
$docblock_info->yield,
$this->aliases,
$storage->template_types,
$this->type_aliases
);
$yield_type = TypeParser::parseTokens(
$yield_type_tokens,
null,
$storage->template_types ?: [],
$this->type_aliases
);
$yield_type->setFromDocblock();
$yield_type->queueClassLikesForScanning(
$this->codebase,
$this->file_storage,
$storage->template_types ?: []
);
$storage->yield = $yield_type;
} catch (TypeParseTreeException $e) {
// do nothing
}
}
if ($docblock_info->extension_requirement !== null) {
$storage->extension_requirement = (string) TypeParser::parseTokens(
TypeTokenizer::getFullyQualifiedTokens(
$docblock_info->extension_requirement,
$this->aliases,
$this->class_template_types,
$this->type_aliases
),
null,
$this->class_template_types,
$this->type_aliases
);
}
foreach ($docblock_info->implementation_requirements as $implementation_requirement) {
$storage->implementation_requirements[] = (string) TypeParser::parseTokens(
TypeTokenizer::getFullyQualifiedTokens(
$implementation_requirement,
$this->aliases,
$this->class_template_types,
$this->type_aliases
),
null,
$this->class_template_types,
$this->type_aliases
);
}
$storage->sealed_properties = $docblock_info->sealed_properties;
$storage->sealed_methods = $docblock_info->sealed_methods;
if ($docblock_info->properties) {
foreach ($docblock_info->properties as $property) {
$pseudo_property_type_tokens = TypeTokenizer::getFullyQualifiedTokens(
$property['type'],
$this->aliases,
$this->class_template_types,
$this->type_aliases
);
try {
$pseudo_property_type = TypeParser::parseTokens(
$pseudo_property_type_tokens,
null,
$this->class_template_types,
$this->type_aliases
);
$pseudo_property_type->setFromDocblock();
$pseudo_property_type->queueClassLikesForScanning(
$this->codebase,
$this->file_storage,
$storage->template_types ?: []
);
if ($property['tag'] !== 'property-read' && $property['tag'] !== 'psalm-property-read') {
$storage->pseudo_property_set_types[$property['name']] = $pseudo_property_type;
}
if ($property['tag'] !== 'property-write' && $property['tag'] !== 'psalm-property-write') {
$storage->pseudo_property_get_types[$property['name']] = $pseudo_property_type;
}
} catch (TypeParseTreeException $e) {
$storage->docblock_issues[] = new InvalidDocblock(
$e->getMessage() . ' in docblock for ' . $fq_classlike_name,
$name_location ?? $class_location
);
}
}
$storage->sealed_properties = true;
}
foreach ($docblock_info->methods as $method) {
$functionlike_node_scanner = new FunctionLikeNodeScanner(
$this->codebase,
$this->file_scanner,
$this->file_storage,
$this->aliases,
$this->type_aliases,
$this->storage,
[]
);
/** @var MethodStorage */
$pseudo_method_storage = $functionlike_node_scanner->start($method, true);
$lc_method_name = strtolower($method->name->name);
if ($pseudo_method_storage->is_static) {
$storage->pseudo_static_methods[$lc_method_name] = $pseudo_method_storage;
} else {
$storage->pseudo_methods[$lc_method_name] = $pseudo_method_storage;
$storage->declaring_pseudo_method_ids[$lc_method_name] = new MethodIdentifier(
$fq_classlike_name,
$lc_method_name
);
}
$storage->sealed_methods = true;
}
$storage->deprecated = $docblock_info->deprecated;
if ($docblock_info->internal
&& !$docblock_info->psalm_internal
&& $this->aliases->namespace
) {
$storage->internal = explode('\\', $this->aliases->namespace)[0];
} else {
$storage->internal = $docblock_info->psalm_internal ?? '';
}
if ($docblock_info->final && !$storage->final) {
$storage->final = true;
$storage->final_from_docblock = true;
}
$storage->preserve_constructor_signature = $docblock_info->consistent_constructor;
if ($storage->preserve_constructor_signature) {
$has_constructor = false;
foreach ($node->stmts as $stmt) {
if ($stmt instanceof PhpParser\Node\Stmt\ClassMethod
&& $stmt->name->name === '__construct'
) {
$has_constructor = true;
break;
}
}
if (!$has_constructor) {
self::registerEmptyConstructor($storage);
}
}
$storage->enforce_template_inheritance = $docblock_info->consistent_templates;
foreach ($docblock_info->mixins as $key => $mixin) {
$mixin_type = TypeParser::parseTokens(
TypeTokenizer::getFullyQualifiedTokens(
$mixin,
$this->aliases,
$this->class_template_types,
$this->type_aliases,
$fq_classlike_name
),
null,
$this->class_template_types,
$this->type_aliases
);
$mixin_type->queueClassLikesForScanning(
$this->codebase,
$this->file_storage,
$storage->template_types ?: []
);
$mixin_type->setFromDocblock();
if ($mixin_type->isSingle()) {
$mixin_type = $mixin_type->getSingleAtomic();
if ($mixin_type instanceof TNamedObject) {
$storage->namedMixins[] = $mixin_type;
}
if ($mixin_type instanceof TTemplateParam) {
$storage->templatedMixins[] = $mixin_type;
}
}
if ($key === 0) {
$storage->mixin_declaring_fqcln = $storage->name;
}
}
$storage->mutation_free = $docblock_info->mutation_free;
$storage->external_mutation_free = $docblock_info->external_mutation_free;
$storage->specialize_instance = $docblock_info->taint_specialize;
$storage->override_property_visibility = $docblock_info->override_property_visibility;
$storage->override_method_visibility = $docblock_info->override_method_visibility;
$storage->suppressed_issues = $docblock_info->suppressed_issues;
if ($docblock_info->description) {
$storage->description = $docblock_info->description;
}
}
foreach ($node->stmts as $node_stmt) {
if ($node_stmt instanceof PhpParser\Node\Stmt\ClassConst) {
$this->visitClassConstDeclaration($node_stmt, $storage, $fq_classlike_name);
} elseif ($node_stmt instanceof PhpParser\Node\Stmt\EnumCase
&& $node instanceof PhpParser\Node\Stmt\Enum_
) {
$this->visitEnumDeclaration($node_stmt, $storage, $fq_classlike_name);
}
}
foreach ($node->stmts as $node_stmt) {
if ($node_stmt instanceof PhpParser\Node\Stmt\Property) {
$this->visitPropertyDeclaration($node_stmt, $this->config, $storage, $fq_classlike_name);
}
}
foreach ($node->attrGroups as $attr_group) {
foreach ($attr_group->attrs as $attr) {
$attribute = AttributeResolver::resolve(
$this->codebase,
$this->file_scanner,
$this->file_storage,
$this->aliases,
$attr,
$this->storage->name ?? null
);
if ($attribute->fq_class_name === 'Psalm\\Deprecated'
|| $attribute->fq_class_name === 'JetBrains\\PhpStorm\\Deprecated'
) {
$storage->deprecated = true;
}
if ($attribute->fq_class_name === 'Psalm\\Internal' && !$storage->internal) {
$storage->internal = NamespaceAnalyzer::getNameSpaceRoot($fq_classlike_name);
}
if ($attribute->fq_class_name === 'Psalm\\Immutable'
|| $attribute->fq_class_name === 'JetBrains\\PhpStorm\\Immutable'
) {
$storage->mutation_free = true;
$storage->external_mutation_free = true;
}
if ($attribute->fq_class_name === 'Psalm\\ExternalMutationFree') {
$storage->external_mutation_free = true;
}
$storage->attributes[] = $attribute;
}
}
return null;
}
public function finish(PhpParser\Node\Stmt\ClassLike $node): ClassLikeStorage
{
if (!$this->storage) {
throw new UnexpectedValueException(
'Storage should exist in ' . $this->file_path . ' at ' . $node->getLine()
);
}
$classlike_storage = $this->storage;
$fq_classlike_name = $classlike_storage->name;
if (PropertyMap::inPropertyMap($fq_classlike_name)) {
$mapped_properties = PropertyMap::getPropertyMap()[strtolower($fq_classlike_name)];
foreach ($mapped_properties as $property_name => $public_mapped_property) {
$property_type = Type::parseString($public_mapped_property);
$property_type->queueClassLikesForScanning($this->codebase, $this->file_storage);
if (!isset($classlike_storage->properties[$property_name])) {
$classlike_storage->properties[$property_name] = new PropertyStorage();
}
$classlike_storage->properties[$property_name]->type = $property_type;
$property_id = $fq_classlike_name . '::$' . $property_name;
$classlike_storage->declaring_property_ids[$property_name] = $fq_classlike_name;
$classlike_storage->appearing_property_ids[$property_name] = $property_id;
}
}
$converted_aliases = array_map(
function (InlineTypeAlias $t): ?ClassTypeAlias {
try {
$union = TypeParser::parseTokens(
$t->replacement_tokens,
null,
[],
$this->type_aliases
);
$union->setFromDocblock();
return new ClassTypeAlias(
array_values($union->getAtomicTypes())
);
} catch (Exception $e) {
return null;
}
},
$this->classlike_type_aliases
);
foreach ($converted_aliases as $key => $type) {
if (!$type) {
$classlike_storage->docblock_issues[] = new InvalidDocblock(
'@psalm-type ' . $key . ' contains invalid references',
new CodeLocation($this->file_scanner, $node, null, true)
);
}
}
$classlike_storage->type_aliases = array_filter($converted_aliases);
return $classlike_storage;
}
public function handleTraitUse(PhpParser\Node\Stmt\TraitUse $node): void
{
$storage = $this->storage;
if (!$storage) {
throw new UnexpectedValueException('bad');
}
$method_map = $storage->trait_alias_map ?: [];
$visibility_map = $storage->trait_visibility_map ?: [];
$final_map = $storage->trait_final_map ?: [];
foreach ($node->adaptations as $adaptation) {
if ($adaptation instanceof PhpParser\Node\Stmt\TraitUseAdaptation\Alias) {
$old_name = strtolower($adaptation->method->name);
$new_name = $old_name;
if ($adaptation->newName) {
$new_name = strtolower($adaptation->newName->name);
if ($new_name !== $old_name) {
$method_map[$new_name] = $old_name;
}
}
if ($adaptation->newModifier) {
switch ($adaptation->newModifier) {
case 1:
$visibility_map[$new_name] = ClassLikeAnalyzer::VISIBILITY_PUBLIC;
break;
case 2:
$visibility_map[$new_name] = ClassLikeAnalyzer::VISIBILITY_PROTECTED;
break;
case 4:
$visibility_map[$new_name] = ClassLikeAnalyzer::VISIBILITY_PRIVATE;
break;
case 32:
$final_map[$new_name] = true;
break;
}
}
}
}
$storage->trait_alias_map = $method_map;
$storage->trait_visibility_map = $visibility_map;
$storage->trait_final_map = $final_map;
foreach ($node->traits as $trait) {
$trait_fqcln = ClassLikeAnalyzer::getFQCLNFromNameObject($trait, $this->aliases);
$this->codebase->scanner->queueClassLikeForScanning($trait_fqcln, $this->file_scanner->will_analyze);
$storage->used_traits[strtolower($trait_fqcln)] = $trait_fqcln;
$this->file_storage->required_classes[strtolower($trait_fqcln)] = $trait_fqcln;
}
if ($node_comment = $node->getDocComment()) {
$comments = DocComment::parsePreservingLength($node_comment);
if (isset($comments->combined_tags['use'])) {
foreach ($comments->combined_tags['use'] as $template_line) {
$this->useTemplatedType(
$storage,
$node,
trim(preg_replace('@^[ \t]*\*@m', '', $template_line))
);
}
}
if (isset($comments->tags['template-extends'])
|| isset($comments->tags['extends'])
|| isset($comments->tags['template-implements'])
|| isset($comments->tags['implements'])
) {
$storage->docblock_issues[] = new InvalidDocblock(
'You must use @use or @template-use to parameterize traits',
new CodeLocation($this->file_scanner, $node, null, true)
);
}
}
}
private function extendTemplatedType(
ClassLikeStorage $storage,
PhpParser\Node\Stmt\ClassLike $node,
string $extended_class_name
): void {
if (trim($extended_class_name) === '') {
$storage->docblock_issues[] = new InvalidDocblock(
'Extended class cannot be empty in docblock for ' . $storage->name,
new CodeLocation($this->file_scanner, $node, null, true)
);
return;
}
try {
$extended_union_type = TypeParser::parseTokens(
TypeTokenizer::getFullyQualifiedTokens(
$extended_class_name,
$this->aliases,
$this->class_template_types,
$this->type_aliases
),
null,
$this->class_template_types,
$this->type_aliases
);
} catch (TypeParseTreeException $e) {
$storage->docblock_issues[] = new InvalidDocblock(
$e->getMessage() . ' in docblock for ' . $storage->name,
new CodeLocation($this->file_scanner, $node, null, true)
);
return;
}
if (!$extended_union_type->isSingle()) {
$storage->docblock_issues[] = new InvalidDocblock(
'@template-extends cannot be a union type',
new CodeLocation($this->file_scanner, $node, null, true)
);
}
$extended_union_type->setFromDocblock();
$extended_union_type->queueClassLikesForScanning(
$this->codebase,
$this->file_storage,
$storage->template_types ?: []
);
foreach ($extended_union_type->getAtomicTypes() as $atomic_type) {
if (!$atomic_type instanceof TGenericObject) {
$storage->docblock_issues[] = new InvalidDocblock(
'@template-extends has invalid class ' . $atomic_type->getId(),
new CodeLocation($this->file_scanner, $node, null, true)
);
return;
}
$generic_class_lc = strtolower($atomic_type->value);
if (!isset($storage->parent_classes[$generic_class_lc])
&& !isset($storage->parent_interfaces[$generic_class_lc])
) {
$storage->docblock_issues[] = new InvalidDocblock(
'@template-extends must include the name of an extended class,'
. ' got ' . $atomic_type->getId(),
new CodeLocation($this->file_scanner, $node, null, true)
);
}
$extended_type_parameters = [];
$storage->template_extended_count = count($atomic_type->type_params);
foreach ($atomic_type->type_params as $type_param) {
$extended_type_parameters[] = $type_param;
}
$storage->template_extended_offsets[$atomic_type->value] = $extended_type_parameters;
}
}