1
0
mirror of https://github.com/danog/psalm.git synced 2024-12-16 11:26:55 +01:00
psalm/src/Psalm/Internal/Analyzer/Statements/Expression/Fetch/PropertyFetchAnalyzer.php

974 lines
37 KiB
PHP
Raw Normal View History

2018-01-14 18:09:40 +01:00
<?php
2018-11-06 03:57:36 +01:00
namespace Psalm\Internal\Analyzer\Statements\Expression\Fetch;
2018-01-14 18:09:40 +01:00
use PhpParser;
2018-11-06 03:57:36 +01:00
use Psalm\Internal\Analyzer\ClassLikeAnalyzer;
use Psalm\Internal\Analyzer\FunctionLikeAnalyzer;
use Psalm\Internal\Analyzer\Statements\ExpressionAnalyzer;
use Psalm\Internal\Analyzer\StatementsAnalyzer;
2018-01-14 18:09:40 +01:00
use Psalm\CodeLocation;
use Psalm\Context;
use Psalm\Issue\DeprecatedProperty;
use Psalm\Issue\InvalidPropertyFetch;
use Psalm\Issue\InternalProperty;
2018-01-14 18:09:40 +01:00
use Psalm\Issue\MissingPropertyType;
use Psalm\Issue\MixedPropertyFetch;
use Psalm\Issue\NoInterfaceProperties;
use Psalm\Issue\NullPropertyFetch;
use Psalm\Issue\ParentNotFound;
use Psalm\Issue\PossiblyInvalidPropertyFetch;
use Psalm\Issue\PossiblyNullPropertyFetch;
use Psalm\Issue\UndefinedClass;
use Psalm\Issue\UndefinedPropertyFetch;
use Psalm\Issue\UndefinedThisPropertyFetch;
use Psalm\Issue\UninitializedProperty;
2018-01-14 18:09:40 +01:00
use Psalm\IssueBuffer;
use Psalm\Type;
use Psalm\Type\Atomic\TGenericObject;
use Psalm\Type\Atomic\TNamedObject;
use Psalm\Type\Atomic\TNull;
use Psalm\Type\Atomic\TObject;
use Psalm\Type\Atomic\TObjectWithProperties;
2018-01-14 18:09:40 +01:00
/**
* @internal
*/
2018-11-06 03:57:36 +01:00
class PropertyFetchAnalyzer
2018-01-14 18:09:40 +01:00
{
/**
2018-11-11 18:01:14 +01:00
* @param StatementsAnalyzer $statements_analyzer
2018-01-14 18:09:40 +01:00
* @param PhpParser\Node\Expr\PropertyFetch $stmt
* @param Context $context
*
* @return false|null
*/
public static function analyzeInstance(
2018-11-11 18:01:14 +01:00
StatementsAnalyzer $statements_analyzer,
2018-01-14 18:09:40 +01:00
PhpParser\Node\Expr\PropertyFetch $stmt,
Context $context
) {
if (!$stmt->name instanceof PhpParser\Node\Identifier) {
2018-11-11 18:01:14 +01:00
if (ExpressionAnalyzer::analyze($statements_analyzer, $stmt->name, $context) === false) {
2018-01-14 18:09:40 +01:00
return false;
}
}
2018-11-11 18:01:14 +01:00
if (ExpressionAnalyzer::analyze($statements_analyzer, $stmt->var, $context) === false) {
2018-01-14 18:09:40 +01:00
return false;
}
if ($stmt->name instanceof PhpParser\Node\Identifier) {
$prop_name = $stmt->name->name;
} elseif (isset($stmt->name->inferredType)
&& $stmt->name->inferredType->isSingleStringLiteral()
) {
$prop_name = $stmt->name->inferredType->getSingleStringLiteral()->value;
} else {
$prop_name = null;
}
2018-11-11 18:01:14 +01:00
$codebase = $statements_analyzer->getCodebase();
2018-01-14 18:09:40 +01:00
2018-11-06 03:57:36 +01:00
$stmt_var_id = ExpressionAnalyzer::getArrayVarId(
2018-01-14 18:09:40 +01:00
$stmt->var,
2018-11-11 18:01:14 +01:00
$statements_analyzer->getFQCLN(),
$statements_analyzer
2018-01-14 18:09:40 +01:00
);
2018-11-06 03:57:36 +01:00
$var_id = ExpressionAnalyzer::getArrayVarId(
2018-01-14 18:09:40 +01:00
$stmt,
2018-11-11 18:01:14 +01:00
$statements_analyzer->getFQCLN(),
$statements_analyzer
2018-01-14 18:09:40 +01:00
);
$stmt_var_type = null;
2018-06-09 05:54:07 +02:00
$stmt->inferredType = null;
2018-01-14 18:09:40 +01:00
2018-11-11 18:01:14 +01:00
if ($var_id && $context->hasVariable($var_id, $statements_analyzer)) {
2018-01-14 18:09:40 +01:00
// we don't need to check anything
$stmt->inferredType = $context->vars_in_scope[$var_id];
if (!$context->collect_initializations
&& !$context->collect_mutations
&& $statements_analyzer->getFilePath() === $statements_analyzer->getRootFilePath()
&& (!(($parent_source = $statements_analyzer->getSource())
instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer)
|| !$parent_source->getSource() instanceof \Psalm\Internal\Analyzer\TraitAnalyzer)
) {
$codebase->analyzer->incrementNonMixedCount($statements_analyzer->getFilePath());
}
2019-02-24 07:33:25 +01:00
if ($codebase->store_node_types
&& (!$context->collect_initializations
&& !$context->collect_mutations)
) {
$codebase->analyzer->addNodeType(
2018-11-11 18:01:14 +01:00
$statements_analyzer->getFilePath(),
$stmt->name,
(string) $stmt->inferredType
);
}
if ($stmt_var_id === '$this'
&& !$stmt->inferredType->initialized
&& $context->collect_initializations
&& isset($stmt->var->inferredType)
&& $stmt->var->inferredType->hasObjectType()
&& $stmt->name instanceof PhpParser\Node\Identifier
) {
$source = $statements_analyzer->getSource();
$property_id = null;
foreach ($stmt->var->inferredType->getTypes() as $lhs_type_part) {
if ($lhs_type_part instanceof TNamedObject) {
if (!$codebase->classExists($lhs_type_part->value)) {
continue;
}
$property_id = $lhs_type_part->value . '::$' . $stmt->name->name;
}
}
if ($property_id
&& $source instanceof FunctionLikeAnalyzer
&& $source->getMethodName() === '__construct'
) {
if (IssueBuffer::accepts(
new UninitializedProperty(
'Cannot use uninitialized property ' . $var_id,
new CodeLocation($statements_analyzer->getSource(), $stmt),
$var_id
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
$stmt->inferredType->addType(new Type\Atomic\TNull);
}
}
if (isset($stmt->var->inferredType)
2018-01-14 18:09:40 +01:00
&& $stmt->var->inferredType->hasObjectType()
&& $stmt->name instanceof PhpParser\Node\Identifier
2018-01-14 18:09:40 +01:00
) {
// log the appearance
foreach ($stmt->var->inferredType->getTypes() as $lhs_type_part) {
if ($lhs_type_part instanceof TNamedObject) {
2018-02-01 06:50:01 +01:00
if (!$codebase->classExists($lhs_type_part->value)) {
continue;
}
$property_id = $lhs_type_part->value . '::$' . $stmt->name->name;
2018-01-14 18:09:40 +01:00
$codebase->properties->propertyExists(
2018-01-14 18:09:40 +01:00
$property_id,
false,
$statements_analyzer,
$context,
$context->collect_references
2018-11-11 18:01:14 +01:00
? new CodeLocation($statements_analyzer->getSource(), $stmt)
: null
2018-01-14 18:09:40 +01:00
);
2019-02-24 07:33:25 +01:00
if ($codebase->store_node_types) {
$codebase->analyzer->addNodeReference(
2018-11-11 18:01:14 +01:00
$statements_analyzer->getFilePath(),
$stmt->name,
$property_id
);
}
2018-01-14 18:09:40 +01:00
}
}
}
return null;
}
2018-11-11 18:01:14 +01:00
if ($stmt_var_id && $context->hasVariable($stmt_var_id, $statements_analyzer)) {
2018-01-14 18:09:40 +01:00
$stmt_var_type = $context->vars_in_scope[$stmt_var_id];
} elseif (isset($stmt->var->inferredType)) {
$stmt_var_type = $stmt->var->inferredType;
}
if (!$stmt_var_type) {
return null;
}
if ($stmt_var_type->isNull()) {
if (IssueBuffer::accepts(
new NullPropertyFetch(
'Cannot get property on null variable ' . $stmt_var_id,
2018-11-11 18:01:14 +01:00
new CodeLocation($statements_analyzer->getSource(), $stmt)
2018-01-14 18:09:40 +01:00
),
2018-11-11 18:01:14 +01:00
$statements_analyzer->getSuppressedIssues()
2018-01-14 18:09:40 +01:00
)) {
return false;
}
return null;
}
if ($stmt_var_type->isEmpty()) {
if (IssueBuffer::accepts(
new MixedPropertyFetch(
'Cannot fetch property on empty var ' . $stmt_var_id,
2018-11-11 18:01:14 +01:00
new CodeLocation($statements_analyzer->getSource(), $stmt)
2018-01-14 18:09:40 +01:00
),
2018-11-11 18:01:14 +01:00
$statements_analyzer->getSuppressedIssues()
2018-01-14 18:09:40 +01:00
)) {
return false;
}
return null;
}
if ($stmt_var_type->hasMixed()) {
if (!$context->collect_initializations
&& !$context->collect_mutations
&& $statements_analyzer->getFilePath() === $statements_analyzer->getRootFilePath()
&& (!(($parent_source = $statements_analyzer->getSource())
instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer)
|| !$parent_source->getSource() instanceof \Psalm\Internal\Analyzer\TraitAnalyzer)
) {
$codebase->analyzer->incrementMixedCount($statements_analyzer->getFilePath());
}
if ($stmt->name instanceof PhpParser\Node\Identifier) {
2019-04-27 23:38:24 +02:00
$codebase->analyzer->addMixedMemberName(
'$' . $stmt->name->name,
$context->calling_method_id ?: $statements_analyzer->getFileName()
);
}
2018-01-14 18:09:40 +01:00
if (IssueBuffer::accepts(
new MixedPropertyFetch(
'Cannot fetch property on mixed var ' . $stmt_var_id,
2018-11-11 18:01:14 +01:00
new CodeLocation($statements_analyzer->getSource(), $stmt)
2018-01-14 18:09:40 +01:00
),
2018-11-11 18:01:14 +01:00
$statements_analyzer->getSuppressedIssues()
2018-01-14 18:09:40 +01:00
)) {
// fall through
}
if ($stmt_var_type->hasMixed()) {
$stmt->inferredType = Type::getMixed();
2019-02-24 07:33:25 +01:00
if ($codebase->store_node_types
&& (!$context->collect_initializations
&& !$context->collect_mutations)
) {
$codebase->analyzer->addNodeType(
$statements_analyzer->getFilePath(),
$stmt->name,
(string) $stmt->inferredType
);
}
2018-01-14 18:09:40 +01:00
return null;
}
2018-01-14 18:09:40 +01:00
}
if (!$context->collect_initializations
&& !$context->collect_mutations
&& $statements_analyzer->getFilePath() === $statements_analyzer->getRootFilePath()
&& (!(($parent_source = $statements_analyzer->getSource())
instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer)
|| !$parent_source->getSource() instanceof \Psalm\Internal\Analyzer\TraitAnalyzer)
) {
$codebase->analyzer->incrementNonMixedCount($statements_analyzer->getRootFilePath());
}
2018-01-14 18:09:40 +01:00
if ($stmt_var_type->isNullable() && !$stmt_var_type->ignore_nullable_issues && !$context->inside_isset) {
if (IssueBuffer::accepts(
new PossiblyNullPropertyFetch(
'Cannot get property on possibly null variable ' . $stmt_var_id . ' of type ' . $stmt_var_type,
2018-11-11 18:01:14 +01:00
new CodeLocation($statements_analyzer->getSource(), $stmt)
2018-01-14 18:09:40 +01:00
),
2018-11-11 18:01:14 +01:00
$statements_analyzer->getSuppressedIssues()
2018-01-14 18:09:40 +01:00
)) {
// fall through
}
$stmt->inferredType = Type::getNull();
}
if (!$prop_name) {
if ($stmt_var_type->hasObjectType() && !$context->ignore_variable_property) {
foreach ($stmt_var_type->getTypes() as $type) {
if ($type instanceof Type\Atomic\TNamedObject) {
2019-04-27 23:38:24 +02:00
$codebase->analyzer->addMixedMemberName(
strtolower($type->value) . '::$',
$context->calling_method_id ?: $statements_analyzer->getFileName()
);
}
}
}
2018-01-14 18:09:40 +01:00
return null;
}
$invalid_fetch_types = [];
$has_valid_fetch_type = false;
foreach ($stmt_var_type->getTypes() as $lhs_type_part) {
if ($lhs_type_part instanceof TNull) {
continue;
}
2019-02-22 03:40:06 +01:00
if ($lhs_type_part instanceof Type\Atomic\TTemplateParam) {
2019-01-08 22:55:53 +01:00
$extra_types = $lhs_type_part->extra_types;
$lhs_type_part = array_values(
$lhs_type_part->as->getTypes()
)[0];
$lhs_type_part->from_docblock = true;
if ($lhs_type_part instanceof TNamedObject) {
$lhs_type_part->extra_types = $extra_types;
}
}
if ($lhs_type_part instanceof Type\Atomic\TMixed) {
$stmt->inferredType = Type::getMixed();
continue;
}
if ($lhs_type_part instanceof Type\Atomic\TFalse && $stmt_var_type->ignore_falsable_issues) {
continue;
}
2018-01-14 18:09:40 +01:00
if (!$lhs_type_part instanceof TNamedObject && !$lhs_type_part instanceof TObject) {
$invalid_fetch_types[] = (string)$lhs_type_part;
continue;
}
$has_valid_fetch_type = true;
if ($lhs_type_part instanceof TObjectWithProperties
&& isset($lhs_type_part->properties[$prop_name])
) {
if (isset($stmt->inferredType)) {
$stmt->inferredType = Type::combineUnionTypes(
$lhs_type_part->properties[$prop_name],
$stmt->inferredType
);
} else {
$stmt->inferredType = $lhs_type_part->properties[$prop_name];
}
continue;
}
2018-01-14 18:09:40 +01:00
// stdClass and SimpleXMLElement are special cases where we cannot infer the return types
// but we don't want to throw an error
// Hack has a similar issue: https://github.com/facebook/hhvm/issues/5164
2018-02-07 19:57:45 +01:00
if ($lhs_type_part instanceof TObject
|| in_array(strtolower($lhs_type_part->value), ['stdclass', 'simplexmlelement'], true)
2018-01-14 18:09:40 +01:00
) {
$stmt->inferredType = Type::getMixed();
2018-01-14 18:09:40 +01:00
continue;
}
2018-11-06 03:57:36 +01:00
if (ExpressionAnalyzer::isMock($lhs_type_part->value)) {
2018-01-14 18:09:40 +01:00
$stmt->inferredType = Type::getMixed();
continue;
}
$intersection_types = $lhs_type_part->getIntersectionTypes() ?: [];
$fq_class_name = $lhs_type_part->value;
$override_property_visibility = false;
$class_exists = false;
$interface_exists = false;
if (!$codebase->classExists($lhs_type_part->value)) {
2018-02-01 06:50:01 +01:00
if ($codebase->interfaceExists($lhs_type_part->value)) {
$interface_exists = true;
$interface_storage = $codebase->classlike_storage_provider->get($lhs_type_part->value);
$override_property_visibility = $interface_storage->override_property_visibility;
foreach ($intersection_types as $intersection_type) {
if ($intersection_type instanceof TNamedObject
&& $codebase->classExists($intersection_type->value)
) {
$fq_class_name = $intersection_type->value;
$class_exists = true;
break;
}
}
if (!$class_exists) {
if (IssueBuffer::accepts(
new NoInterfaceProperties(
'Interfaces cannot have properties',
new CodeLocation($statements_analyzer->getSource(), $stmt),
$lhs_type_part->value
),
$statements_analyzer->getSuppressedIssues()
)) {
return null;
}
if (!$codebase->methodExists($fq_class_name . '::__set')) {
return null;
}
}
}
if (!$class_exists && !$interface_exists) {
2018-01-14 18:09:40 +01:00
if (IssueBuffer::accepts(
new UndefinedClass(
'Cannot set properties of undefined class ' . $lhs_type_part->value,
new CodeLocation($statements_analyzer->getSource(), $stmt),
$lhs_type_part->value
2018-01-14 18:09:40 +01:00
),
2018-11-11 18:01:14 +01:00
$statements_analyzer->getSuppressedIssues()
2018-01-14 18:09:40 +01:00
)) {
// fall through
2018-01-14 18:09:40 +01:00
}
return null;
2018-01-14 18:09:40 +01:00
}
} else {
$class_exists = true;
2018-01-14 18:09:40 +01:00
}
$property_id = $fq_class_name . '::$' . $prop_name;
2018-01-14 18:09:40 +01:00
if ($codebase->methodExists($fq_class_name . '::__get')
&& (!$codebase->properties->propertyExists($property_id, false, $statements_analyzer, $context)
|| ($stmt_var_id !== '$this'
&& $fq_class_name !== $context->self
2018-11-06 03:57:36 +01:00
&& ClassLikeAnalyzer::checkPropertyVisibility(
$property_id,
$context,
2018-11-11 18:01:14 +01:00
$statements_analyzer,
new CodeLocation($statements_analyzer->getSource(), $stmt),
$statements_analyzer->getSuppressedIssues(),
false
) !== true)
)
) {
$class_storage = $codebase->classlike_storage_provider->get($fq_class_name);
2018-01-14 18:09:40 +01:00
if (isset($class_storage->pseudo_property_get_types['$' . $prop_name])) {
$stmt->inferredType = clone $class_storage->pseudo_property_get_types['$' . $prop_name];
continue;
}
2018-01-14 18:09:40 +01:00
$stmt->inferredType = Type::getMixed();
/*
* If we have an explicit list of all allowed magic properties on the class, and we're
* not in that list, fall through
*/
if (!$class_storage->sealed_properties && !$override_property_visibility) {
continue;
2018-01-14 18:09:40 +01:00
}
if (!$class_exists) {
if (IssueBuffer::accepts(
new UndefinedPropertyFetch(
'Instance property ' . $property_id . ' is not defined',
new CodeLocation($statements_analyzer->getSource(), $stmt),
$property_id
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
}
}
if (!$class_exists) {
continue;
}
2019-02-24 07:33:25 +01:00
if ($codebase->store_node_types) {
$codebase->analyzer->addNodeReference(
$statements_analyzer->getFilePath(),
$stmt->name,
$property_id
);
2018-01-14 18:09:40 +01:00
}
if (!$codebase->properties->propertyExists(
2018-01-14 18:09:40 +01:00
$property_id,
false,
$statements_analyzer,
$context,
2018-11-11 18:01:14 +01:00
$context->collect_references ? new CodeLocation($statements_analyzer->getSource(), $stmt) : null
2018-01-14 18:09:40 +01:00
)
) {
2019-01-31 23:48:48 +01:00
if ($fq_class_name !== $context->self
&& $context->self
&& $codebase->properties->propertyExists(
$context->self . '::$' . $prop_name,
false,
$statements_analyzer,
$context,
2019-01-31 23:48:48 +01:00
$context->collect_references ? new CodeLocation($statements_analyzer->getSource(), $stmt) : null
)
) {
$property_id = $context->self . '::$' . $prop_name;
} else {
if ($context->inside_isset || $context->collect_initializations) {
2018-01-14 18:09:40 +01:00
return;
}
2019-01-31 23:48:48 +01:00
if ($stmt_var_id === '$this') {
if (IssueBuffer::accepts(
new UndefinedThisPropertyFetch(
'Instance property ' . $property_id . ' is not defined',
new CodeLocation($statements_analyzer->getSource(), $stmt),
$property_id
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
} else {
if (IssueBuffer::accepts(
new UndefinedPropertyFetch(
'Instance property ' . $property_id . ' is not defined',
new CodeLocation($statements_analyzer->getSource(), $stmt),
$property_id
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
2018-01-14 18:09:40 +01:00
}
2019-01-31 23:48:48 +01:00
$stmt->inferredType = Type::getMixed();
2019-01-31 23:48:48 +01:00
if ($var_id) {
$context->vars_in_scope[$var_id] = $stmt->inferredType;
}
2019-01-31 23:48:48 +01:00
return;
}
2018-01-14 18:09:40 +01:00
}
if (!$override_property_visibility) {
if (ClassLikeAnalyzer::checkPropertyVisibility(
$property_id,
$context,
$statements_analyzer,
new CodeLocation($statements_analyzer->getSource(), $stmt),
$statements_analyzer->getSuppressedIssues()
) === false) {
return false;
}
2018-01-14 18:09:40 +01:00
}
$declaring_property_class = (string) $codebase->properties->getDeclaringClassForProperty(
$property_id,
true
);
2018-01-14 18:09:40 +01:00
$declaring_class_storage = $codebase->classlike_storage_provider->get(
$declaring_property_class
2018-01-14 18:09:40 +01:00
);
if (isset($declaring_class_storage->properties[$prop_name])) {
$property_storage = $declaring_class_storage->properties[$prop_name];
if ($property_storage->deprecated) {
if (IssueBuffer::accepts(
new DeprecatedProperty(
$property_id . ' is marked deprecated',
new CodeLocation($statements_analyzer->getSource(), $stmt),
$property_id
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
}
if ($property_storage->psalm_internal && $context->self) {
if (strpos($context->self, trim($property_storage->psalm_internal, '\\') . '\\') !== 0) {
if (IssueBuffer::accepts(
new InternalProperty(
$property_id . ' is marked internal to ' . $property_storage->psalm_internal,
new CodeLocation($statements_analyzer->getSource(), $stmt),
$property_id
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
}
}
if ($property_storage->internal && $context->self) {
$self_root = preg_replace('/^([^\\\]+).*/', '$1', $context->self);
$declaring_root = preg_replace('/^([^\\\]+).*/', '$1', $declaring_property_class);
if (strtolower($self_root) !== strtolower($declaring_root)) {
if (IssueBuffer::accepts(
new InternalProperty(
$property_id . ' is marked internal',
new CodeLocation($statements_analyzer->getSource(), $stmt),
$property_id
),
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
}
}
}
}
$class_property_type = $codebase->properties->getPropertyType(
$property_id,
false,
$statements_analyzer,
$context
);
2018-01-14 18:09:40 +01:00
2019-01-11 23:21:50 +01:00
if (!$class_property_type) {
2018-01-14 18:09:40 +01:00
if (IssueBuffer::accepts(
new MissingPropertyType(
'Property ' . $fq_class_name . '::$' . $prop_name
. ' does not have a declared type',
2018-11-11 18:01:14 +01:00
new CodeLocation($statements_analyzer->getSource(), $stmt)
2018-01-14 18:09:40 +01:00
),
2018-11-11 18:01:14 +01:00
$statements_analyzer->getSuppressedIssues()
2018-01-14 18:09:40 +01:00
)) {
// fall through
}
$class_property_type = Type::getMixed();
} else {
2018-11-06 03:57:36 +01:00
$class_property_type = ExpressionAnalyzer::fleshOutType(
$codebase,
2018-01-14 18:09:40 +01:00
clone $class_property_type,
2018-01-26 19:51:00 +01:00
$declaring_property_class,
2018-01-14 18:09:40 +01:00
$declaring_property_class
);
if ($lhs_type_part instanceof TGenericObject) {
$class_storage = $codebase->classlike_storage_provider->get($fq_class_name);
2018-01-14 18:09:40 +01:00
if ($class_storage->template_types) {
$class_template_params = [];
$reversed_class_template_types = array_reverse(array_keys($class_storage->template_types));
$provided_type_param_count = count($lhs_type_part->type_params);
foreach ($reversed_class_template_types as $i => $type_name) {
if (isset($lhs_type_part->type_params[$provided_type_param_count - 1 - $i])) {
$class_template_params[$type_name] =
(string)$lhs_type_part->type_params[$provided_type_param_count - 1 - $i];
} else {
$class_template_params[$type_name] = 'mixed';
}
}
$type_tokens = Type::tokenize((string)$class_property_type);
foreach ($type_tokens as &$type_token) {
if (isset($class_template_params[$type_token])) {
$type_token = $class_template_params[$type_token];
}
}
$class_property_type = Type::parseString(implode('', $type_tokens));
}
}
}
if (isset($stmt->inferredType)) {
$stmt->inferredType = Type::combineUnionTypes($class_property_type, $stmt->inferredType);
} else {
$stmt->inferredType = $class_property_type;
}
}
2019-02-24 07:33:25 +01:00
if ($codebase->store_node_types
&& (!$context->collect_initializations
&& !$context->collect_mutations)
&& isset($stmt->inferredType)
) {
$codebase->analyzer->addNodeType(
2018-11-11 18:01:14 +01:00
$statements_analyzer->getFilePath(),
$stmt->name,
(string) $stmt->inferredType
);
}
2018-01-14 18:09:40 +01:00
if ($invalid_fetch_types) {
$lhs_type_part = $invalid_fetch_types[0];
if ($has_valid_fetch_type) {
if (IssueBuffer::accepts(
new PossiblyInvalidPropertyFetch(
'Cannot fetch property on possible non-object ' . $stmt_var_id . ' of type ' . $lhs_type_part,
2018-11-11 18:01:14 +01:00
new CodeLocation($statements_analyzer->getSource(), $stmt)
2018-01-14 18:09:40 +01:00
),
2018-11-11 18:01:14 +01:00
$statements_analyzer->getSuppressedIssues()
2018-01-14 18:09:40 +01:00
)) {
// fall through
}
} else {
if (IssueBuffer::accepts(
new InvalidPropertyFetch(
'Cannot fetch property on non-object ' . $stmt_var_id . ' of type ' . $lhs_type_part,
2018-11-11 18:01:14 +01:00
new CodeLocation($statements_analyzer->getSource(), $stmt)
2018-01-14 18:09:40 +01:00
),
2018-11-11 18:01:14 +01:00
$statements_analyzer->getSuppressedIssues()
2018-01-14 18:09:40 +01:00
)) {
// fall through
}
}
}
if ($var_id) {
$context->vars_in_scope[$var_id] = isset($stmt->inferredType) ? $stmt->inferredType : Type::getMixed();
}
}
/**
2018-11-11 18:01:14 +01:00
* @param StatementsAnalyzer $statements_analyzer
2018-01-14 18:09:40 +01:00
* @param PhpParser\Node\Expr\StaticPropertyFetch $stmt
* @param Context $context
*
* @return null|false
*/
public static function analyzeStatic(
2018-11-11 18:01:14 +01:00
StatementsAnalyzer $statements_analyzer,
2018-01-14 18:09:40 +01:00
PhpParser\Node\Expr\StaticPropertyFetch $stmt,
Context $context
) {
if ($stmt->class instanceof PhpParser\Node\Expr\Variable ||
$stmt->class instanceof PhpParser\Node\Expr\ArrayDimFetch
) {
// @todo check this
return null;
}
$fq_class_name = null;
2018-11-11 18:01:14 +01:00
$codebase = $statements_analyzer->getCodebase();
2018-01-14 18:09:40 +01:00
if ($stmt->class instanceof PhpParser\Node\Name) {
if (count($stmt->class->parts) === 1
&& in_array(strtolower($stmt->class->parts[0]), ['self', 'static', 'parent'], true)
) {
if ($stmt->class->parts[0] === 'parent') {
2018-11-11 18:01:14 +01:00
$fq_class_name = $statements_analyzer->getParentFQCLN();
2018-01-14 18:09:40 +01:00
if ($fq_class_name === null) {
if (IssueBuffer::accepts(
new ParentNotFound(
'Cannot check property fetch on parent as this class does not extend another',
2018-11-11 18:01:14 +01:00
new CodeLocation($statements_analyzer->getSource(), $stmt)
2018-01-14 18:09:40 +01:00
),
2018-11-11 18:01:14 +01:00
$statements_analyzer->getSuppressedIssues()
2018-01-14 18:09:40 +01:00
)) {
return false;
}
return;
}
} else {
$fq_class_name = (string)$context->self;
}
if ($context->isPhantomClass($fq_class_name)) {
return null;
}
} else {
2018-11-11 18:01:14 +01:00
$aliases = $statements_analyzer->getAliases();
if ($context->calling_method_id
&& !$stmt->class instanceof PhpParser\Node\Name\FullyQualified
) {
$codebase->file_reference_provider->addMethodReferenceToClassMember(
$context->calling_method_id,
2018-11-11 18:01:14 +01:00
'use:' . $stmt->class->parts[0] . ':' . \md5($statements_analyzer->getFilePath())
);
}
2018-11-06 03:57:36 +01:00
$fq_class_name = ClassLikeAnalyzer::getFQCLNFromNameObject(
2018-01-14 18:09:40 +01:00
$stmt->class,
$aliases
2018-01-14 18:09:40 +01:00
);
if ($context->isPhantomClass($fq_class_name)) {
return null;
}
if ($context->check_classes) {
2018-11-06 03:57:36 +01:00
if (ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
2018-11-11 18:01:14 +01:00
$statements_analyzer,
2018-01-14 18:09:40 +01:00
$fq_class_name,
2018-11-11 18:01:14 +01:00
new CodeLocation($statements_analyzer->getSource(), $stmt->class),
$statements_analyzer->getSuppressedIssues(),
2018-01-14 18:09:40 +01:00
false
) !== true) {
return false;
}
}
}
$stmt->class->inferredType = $fq_class_name ? new Type\Union([new TNamedObject($fq_class_name)]) : null;
}
if ($stmt->name instanceof PhpParser\Node\VarLikeIdentifier) {
$prop_name = $stmt->name->name;
} elseif (isset($stmt->name->inferredType)
&& $stmt->name->inferredType->isSingleStringLiteral()
) {
$prop_name = $stmt->name->inferredType->getSingleStringLiteral()->value;
} else {
$prop_name = null;
}
if (!$prop_name) {
if ($fq_class_name) {
2019-04-27 23:38:24 +02:00
$codebase->analyzer->addMixedMemberName(
strtolower($fq_class_name) . '::$',
$context->calling_method_id ?: $statements_analyzer->getFileName()
);
}
2018-01-14 18:09:40 +01:00
return null;
}
2018-01-14 18:09:40 +01:00
if (!$fq_class_name
|| !$context->check_classes
|| !$context->check_variables
|| ExpressionAnalyzer::isMock($fq_class_name)
) {
return null;
}
$var_id = ExpressionAnalyzer::getVarId(
$stmt,
$context->self ?: $statements_analyzer->getFQCLN(),
$statements_analyzer
);
2018-01-14 18:09:40 +01:00
$property_id = $fq_class_name . '::$' . $prop_name;
2018-01-14 18:09:40 +01:00
if ($codebase->store_node_types) {
$codebase->analyzer->addNodeReference(
$statements_analyzer->getFilePath(),
$stmt->name,
$property_id
);
}
if ($var_id && $context->hasVariable($var_id, $statements_analyzer)) {
// we don't need to check anything
$stmt->inferredType = $context->vars_in_scope[$var_id];
if ($context->collect_references) {
// log the appearance
$codebase->properties->propertyExists(
$property_id,
false,
$statements_analyzer,
$context,
new CodeLocation($statements_analyzer->getSource(), $stmt)
);
2018-01-14 18:09:40 +01:00
}
if ($codebase->store_node_types
&& (!$context->collect_initializations
&& !$context->collect_mutations)
&& isset($stmt->inferredType)
2018-01-14 18:09:40 +01:00
) {
$codebase->analyzer->addNodeType(
$statements_analyzer->getFilePath(),
$stmt->name,
(string) $stmt->inferredType
);
2018-01-14 18:09:40 +01:00
}
return null;
}
if (!$codebase->properties->propertyExists(
$property_id,
false,
$statements_analyzer,
$context,
$context->collect_references ? new CodeLocation($statements_analyzer->getSource(), $stmt) : null
)
) {
if (IssueBuffer::accepts(
new UndefinedPropertyFetch(
'Static property ' . $property_id . ' is not defined',
new CodeLocation($statements_analyzer->getSource(), $stmt),
$property_id
),
2018-11-11 18:01:14 +01:00
$statements_analyzer->getSuppressedIssues()
)) {
// fall through
2018-01-14 18:09:40 +01:00
}
return;
}
2018-01-14 18:09:40 +01:00
if (ClassLikeAnalyzer::checkPropertyVisibility(
$property_id,
$context,
$statements_analyzer,
new CodeLocation($statements_analyzer->getSource(), $stmt),
$statements_analyzer->getSuppressedIssues()
) === false) {
return false;
}
2018-01-14 18:09:40 +01:00
$declaring_property_class = $codebase->properties->getDeclaringClassForProperty(
$fq_class_name . '::$' . $prop_name,
true
);
2018-01-14 18:09:40 +01:00
$class_storage = $codebase->classlike_storage_provider->get((string)$declaring_property_class);
$property = $class_storage->properties[$prop_name];
if ($var_id) {
if ($property->type) {
$context->vars_in_scope[$var_id] = ExpressionAnalyzer::fleshOutType(
$codebase,
clone $property->type,
$declaring_property_class,
$declaring_property_class
);
2018-01-14 18:09:40 +01:00
} else {
$context->vars_in_scope[$var_id] = Type::getMixed();
}
$stmt->inferredType = clone $context->vars_in_scope[$var_id];
if ($codebase->store_node_types
&& (!$context->collect_initializations
&& !$context->collect_mutations)
) {
$codebase->analyzer->addNodeType(
$statements_analyzer->getFilePath(),
$stmt->name,
(string) $stmt->inferredType
);
2018-01-14 18:09:40 +01:00
}
} else {
$stmt->inferredType = Type::getMixed();
2018-01-14 18:09:40 +01:00
}
return null;
}
}