mirror of
https://github.com/danog/psalm.git
synced 2024-12-16 19:36:59 +01:00
1403 lines
54 KiB
PHP
1403 lines
54 KiB
PHP
<?php
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namespace Psalm\Internal\Analyzer\Statements\Expression\Fetch;
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use PhpParser;
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use Psalm\Internal\Analyzer\ClassLikeAnalyzer;
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use Psalm\Internal\Analyzer\FunctionLikeAnalyzer;
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use Psalm\Internal\Analyzer\NamespaceAnalyzer;
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use Psalm\Internal\Analyzer\Statements\ExpressionAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\CallAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\ExpressionIdentifier;
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use Psalm\Internal\Analyzer\StatementsAnalyzer;
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use Psalm\Internal\FileManipulation\FileManipulationBuffer;
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use Psalm\Internal\Type\TemplateResult;
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use Psalm\CodeLocation;
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use Psalm\Context;
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use Psalm\Issue\DeprecatedProperty;
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use Psalm\Issue\InvalidPropertyFetch;
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use Psalm\Issue\InternalProperty;
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use Psalm\Issue\MissingPropertyType;
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use Psalm\Issue\MixedPropertyFetch;
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use Psalm\Issue\NoInterfaceProperties;
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use Psalm\Issue\NullPropertyFetch;
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use Psalm\Issue\ParentNotFound;
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use Psalm\Issue\PossiblyInvalidPropertyFetch;
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use Psalm\Issue\PossiblyNullPropertyFetch;
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use Psalm\Issue\UndefinedClass;
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use Psalm\Issue\UndefinedDocblockClass;
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use Psalm\Issue\UndefinedMagicPropertyFetch;
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use Psalm\Issue\UndefinedPropertyFetch;
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use Psalm\Issue\UndefinedThisPropertyFetch;
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use Psalm\Issue\UninitializedProperty;
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use Psalm\IssueBuffer;
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use Psalm\Type;
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use Psalm\Storage\ClassLikeStorage;
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use Psalm\Type\Atomic\TGenericObject;
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use Psalm\Type\Atomic\TNamedObject;
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use Psalm\Type\Atomic\TNull;
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use Psalm\Type\Atomic\TObject;
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use Psalm\Type\Atomic\TObjectWithProperties;
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use function strtolower;
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use function array_values;
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use function in_array;
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use function array_keys;
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use function count;
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use function explode;
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use Psalm\Internal\Taint\TaintNode;
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/**
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* @internal
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*/
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class PropertyFetchAnalyzer
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{
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public static function analyzeInstance(
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StatementsAnalyzer $statements_analyzer,
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PhpParser\Node\Expr\PropertyFetch $stmt,
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Context $context
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) : bool {
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if (!$stmt->name instanceof PhpParser\Node\Identifier) {
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if (ExpressionAnalyzer::analyze($statements_analyzer, $stmt->name, $context) === false) {
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return false;
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}
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}
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if (ExpressionAnalyzer::analyze($statements_analyzer, $stmt->var, $context) === false) {
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return false;
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}
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if ($stmt->name instanceof PhpParser\Node\Identifier) {
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$prop_name = $stmt->name->name;
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} elseif (($stmt_name_type = $statements_analyzer->node_data->getType($stmt->name))
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&& $stmt_name_type->isSingleStringLiteral()
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) {
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$prop_name = $stmt_name_type->getSingleStringLiteral()->value;
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} else {
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$prop_name = null;
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}
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$codebase = $statements_analyzer->getCodebase();
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$stmt_var_id = ExpressionIdentifier::getArrayVarId(
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$stmt->var,
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$statements_analyzer->getFQCLN(),
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$statements_analyzer
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);
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$var_id = ExpressionIdentifier::getArrayVarId(
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$stmt,
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$statements_analyzer->getFQCLN(),
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$statements_analyzer
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);
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$stmt_type = null;
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if ($var_id && $context->hasVariable($var_id, $statements_analyzer)) {
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$stmt_type = $context->vars_in_scope[$var_id];
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// we don't need to check anything
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$statements_analyzer->node_data->setType($stmt, $stmt_type);
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if (!$context->collect_initializations
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&& !$context->collect_mutations
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&& $statements_analyzer->getFilePath() === $statements_analyzer->getRootFilePath()
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&& (!(($parent_source = $statements_analyzer->getSource())
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instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer)
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|| !$parent_source->getSource() instanceof \Psalm\Internal\Analyzer\TraitAnalyzer)
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) {
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$codebase->analyzer->incrementNonMixedCount($statements_analyzer->getFilePath());
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}
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if ($codebase->store_node_types
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&& !$context->collect_initializations
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&& !$context->collect_mutations
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) {
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$codebase->analyzer->addNodeType(
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$statements_analyzer->getFilePath(),
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$stmt->name,
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$stmt_type->getId()
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);
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}
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if ($stmt_var_id === '$this'
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&& !$stmt_type->initialized
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&& $context->collect_initializations
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&& ($stmt_var_type = $statements_analyzer->node_data->getType($stmt->var))
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&& $stmt_var_type->hasObjectType()
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&& $stmt->name instanceof PhpParser\Node\Identifier
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) {
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$source = $statements_analyzer->getSource();
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$property_id = null;
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foreach ($stmt_var_type->getAtomicTypes() as $lhs_type_part) {
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if ($lhs_type_part instanceof TNamedObject) {
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if (!$codebase->classExists($lhs_type_part->value)) {
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continue;
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}
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$property_id = $lhs_type_part->value . '::$' . $stmt->name->name;
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}
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}
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if ($property_id
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&& $source instanceof FunctionLikeAnalyzer
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&& $source->getMethodName() === '__construct'
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&& !$context->inside_unset
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) {
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if ($context->inside_isset
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|| ($context->inside_assignment
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&& isset($context->vars_in_scope[$var_id])
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&& $context->vars_in_scope[$var_id]->isNullable()
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)
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) {
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$stmt_type->initialized = true;
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} else {
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if (IssueBuffer::accepts(
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new UninitializedProperty(
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'Cannot use uninitialized property ' . $var_id,
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new CodeLocation($statements_analyzer->getSource(), $stmt),
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$var_id
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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// fall through
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}
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$stmt_type->addType(new Type\Atomic\TNull);
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}
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}
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}
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if (($stmt_var_type = $statements_analyzer->node_data->getType($stmt->var))
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&& $stmt_var_type->hasObjectType()
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&& $stmt->name instanceof PhpParser\Node\Identifier
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) {
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// log the appearance
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foreach ($stmt_var_type->getAtomicTypes() as $lhs_type_part) {
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if ($lhs_type_part instanceof TNamedObject) {
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if (!$codebase->classExists($lhs_type_part->value)) {
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continue;
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}
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$property_id = $lhs_type_part->value . '::$' . $stmt->name->name;
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self::processTaints($statements_analyzer, $stmt, $stmt_type, $property_id);
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$codebase->properties->propertyExists(
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$property_id,
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true,
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$statements_analyzer,
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$context,
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$codebase->collect_locations
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? new CodeLocation($statements_analyzer->getSource(), $stmt)
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: null
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);
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if ($codebase->store_node_types
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&& !$context->collect_initializations
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&& !$context->collect_mutations
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) {
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$codebase->analyzer->addNodeReference(
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$statements_analyzer->getFilePath(),
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$stmt->name,
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$property_id
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);
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}
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}
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}
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}
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return true;
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}
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if ($stmt_var_id && $context->hasVariable($stmt_var_id, $statements_analyzer)) {
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$stmt_var_type = $context->vars_in_scope[$stmt_var_id];
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} else {
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$stmt_var_type = $statements_analyzer->node_data->getType($stmt->var);
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}
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if (!$stmt_var_type) {
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return true;
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}
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if ($stmt_var_type->isNull()) {
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if (IssueBuffer::accepts(
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new NullPropertyFetch(
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'Cannot get property on null variable ' . $stmt_var_id,
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new CodeLocation($statements_analyzer->getSource(), $stmt)
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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return false;
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}
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return true;
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}
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if ($stmt_var_type->isEmpty()) {
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if (IssueBuffer::accepts(
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new MixedPropertyFetch(
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'Cannot fetch property on empty var ' . $stmt_var_id,
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new CodeLocation($statements_analyzer->getSource(), $stmt)
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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return false;
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}
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return true;
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}
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if ($stmt_var_type->hasMixed()) {
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if (!$context->collect_initializations
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&& !$context->collect_mutations
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&& $statements_analyzer->getFilePath() === $statements_analyzer->getRootFilePath()
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&& (!(($parent_source = $statements_analyzer->getSource())
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instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer)
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|| !$parent_source->getSource() instanceof \Psalm\Internal\Analyzer\TraitAnalyzer)
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) {
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$codebase->analyzer->incrementMixedCount($statements_analyzer->getFilePath());
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}
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if ($stmt->name instanceof PhpParser\Node\Identifier) {
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$codebase->analyzer->addMixedMemberName(
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'$' . $stmt->name->name,
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$context->calling_method_id ?: $statements_analyzer->getFileName()
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);
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}
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if (IssueBuffer::accepts(
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new MixedPropertyFetch(
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'Cannot fetch property on mixed var ' . $stmt_var_id,
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new CodeLocation($statements_analyzer->getSource(), $stmt)
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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// fall through
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}
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$statements_analyzer->node_data->setType($stmt, Type::getMixed());
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if ($codebase->store_node_types
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&& !$context->collect_initializations
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&& !$context->collect_mutations
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) {
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$codebase->analyzer->addNodeType(
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$statements_analyzer->getFilePath(),
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$stmt->name,
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$stmt_var_type->getId()
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);
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}
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}
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if (!$context->collect_initializations
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&& !$context->collect_mutations
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&& $statements_analyzer->getFilePath() === $statements_analyzer->getRootFilePath()
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&& (!(($parent_source = $statements_analyzer->getSource())
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instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer)
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|| !$parent_source->getSource() instanceof \Psalm\Internal\Analyzer\TraitAnalyzer)
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) {
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$codebase->analyzer->incrementNonMixedCount($statements_analyzer->getRootFilePath());
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}
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if ($stmt_var_type->isNullable() && !$stmt_var_type->ignore_nullable_issues) {
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if (!$context->inside_isset) {
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if (IssueBuffer::accepts(
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new PossiblyNullPropertyFetch(
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'Cannot get property on possibly null variable ' . $stmt_var_id . ' of type ' . $stmt_var_type,
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new CodeLocation($statements_analyzer->getSource(), $stmt)
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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// fall through
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}
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} else {
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$statements_analyzer->node_data->setType($stmt, Type::getNull());
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}
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}
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if (!$prop_name) {
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if ($stmt_var_type->hasObjectType() && !$context->ignore_variable_property) {
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foreach ($stmt_var_type->getAtomicTypes() as $type) {
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if ($type instanceof Type\Atomic\TNamedObject) {
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$codebase->analyzer->addMixedMemberName(
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strtolower($type->value) . '::$',
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$context->calling_method_id ?: $statements_analyzer->getFileName()
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);
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}
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}
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}
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return true;
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}
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$invalid_fetch_types = [];
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$has_valid_fetch_type = false;
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foreach ($stmt_var_type->getAtomicTypes() as $lhs_type_part) {
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if ($lhs_type_part instanceof TNull) {
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continue;
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}
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if ($lhs_type_part instanceof Type\Atomic\TTemplateParam) {
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$extra_types = $lhs_type_part->extra_types;
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$lhs_type_part = array_values(
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$lhs_type_part->as->getAtomicTypes()
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)[0];
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$lhs_type_part->from_docblock = true;
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if ($lhs_type_part instanceof TNamedObject) {
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$lhs_type_part->extra_types = $extra_types;
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}
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}
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if ($lhs_type_part instanceof Type\Atomic\TMixed) {
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$statements_analyzer->node_data->setType($stmt, Type::getMixed());
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continue;
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}
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if ($lhs_type_part instanceof Type\Atomic\TFalse && $stmt_var_type->ignore_falsable_issues) {
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continue;
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}
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if (!$lhs_type_part instanceof TNamedObject && !$lhs_type_part instanceof TObject) {
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$invalid_fetch_types[] = (string)$lhs_type_part;
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continue;
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}
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$has_valid_fetch_type = true;
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if ($lhs_type_part instanceof TObjectWithProperties
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&& isset($lhs_type_part->properties[$prop_name])
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) {
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if ($stmt_type = $statements_analyzer->node_data->getType($stmt)) {
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$statements_analyzer->node_data->setType(
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$stmt,
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Type::combineUnionTypes(
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$lhs_type_part->properties[$prop_name],
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$stmt_type
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)
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);
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} else {
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$statements_analyzer->node_data->setType($stmt, $lhs_type_part->properties[$prop_name]);
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}
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continue;
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}
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// stdClass and SimpleXMLElement are special cases where we cannot infer the return types
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// but we don't want to throw an error
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// Hack has a similar issue: https://github.com/facebook/hhvm/issues/5164
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if ($lhs_type_part instanceof TObject
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|| in_array(strtolower($lhs_type_part->value), ['stdclass', 'simplexmlelement'], true)
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) {
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$statements_analyzer->node_data->setType($stmt, Type::getMixed());
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continue;
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}
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if (ExpressionAnalyzer::isMock($lhs_type_part->value)) {
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$statements_analyzer->node_data->setType($stmt, Type::getMixed());
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continue;
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}
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$intersection_types = $lhs_type_part->getIntersectionTypes() ?: [];
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$fq_class_name = $lhs_type_part->value;
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$override_property_visibility = false;
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$has_magic_getter = false;
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$class_exists = false;
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$interface_exists = false;
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if (!$codebase->classExists($lhs_type_part->value)) {
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if ($codebase->interfaceExists($lhs_type_part->value)) {
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$interface_exists = true;
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$interface_storage = $codebase->classlike_storage_provider->get($lhs_type_part->value);
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$override_property_visibility = $interface_storage->override_property_visibility;
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foreach ($intersection_types as $intersection_type) {
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if ($intersection_type instanceof TNamedObject
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&& $codebase->classExists($intersection_type->value)
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) {
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$fq_class_name = $intersection_type->value;
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$class_exists = true;
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break;
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}
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}
|
|
|
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if (!$class_exists) {
|
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if (IssueBuffer::accepts(
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new NoInterfaceProperties(
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'Interfaces cannot have properties',
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new CodeLocation($statements_analyzer->getSource(), $stmt),
|
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$lhs_type_part->value
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),
|
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$statements_analyzer->getSuppressedIssues()
|
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)) {
|
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return true;
|
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}
|
|
|
|
if (!$codebase->methodExists($fq_class_name . '::__set')) {
|
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return true;
|
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}
|
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}
|
|
}
|
|
|
|
if (!$class_exists && !$interface_exists) {
|
|
if ($lhs_type_part->from_docblock) {
|
|
if (IssueBuffer::accepts(
|
|
new UndefinedDocblockClass(
|
|
'Cannot set properties of undefined docblock class ' . $lhs_type_part->value,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt),
|
|
$lhs_type_part->value
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
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// fall through
|
|
}
|
|
} else {
|
|
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
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
} else {
|
|
$class_exists = true;
|
|
}
|
|
|
|
$class_storage = $codebase->classlike_storage_provider->get($fq_class_name);
|
|
$property_id = $fq_class_name . '::$' . $prop_name;
|
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|
|
$naive_property_exists = $codebase->properties->propertyExists(
|
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$property_id,
|
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true,
|
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$statements_analyzer,
|
|
$context,
|
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$codebase->collect_locations ? new CodeLocation($statements_analyzer->getSource(), $stmt) : null
|
|
);
|
|
|
|
// add method before changing fq_class_name
|
|
$get_method_id = new \Psalm\Internal\MethodIdentifier($fq_class_name, '__get');
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|
|
if (!$naive_property_exists
|
|
&& $class_storage->mixin instanceof Type\Atomic\TNamedObject
|
|
) {
|
|
$new_property_id = $class_storage->mixin->value . '::$' . $prop_name;
|
|
|
|
try {
|
|
$new_class_storage = $codebase->classlike_storage_provider->get($class_storage->mixin->value);
|
|
} catch (\InvalidArgumentException $e) {
|
|
$new_class_storage = null;
|
|
}
|
|
|
|
if ($new_class_storage
|
|
&& ($codebase->properties->propertyExists(
|
|
$new_property_id,
|
|
true,
|
|
$statements_analyzer,
|
|
$context,
|
|
$codebase->collect_locations
|
|
? new CodeLocation($statements_analyzer->getSource(), $stmt)
|
|
: null
|
|
)
|
|
|| isset($new_class_storage->pseudo_property_get_types['$' . $prop_name]))
|
|
) {
|
|
$fq_class_name = $class_storage->mixin->value;
|
|
$lhs_type_part = clone $class_storage->mixin;
|
|
$class_storage = $new_class_storage;
|
|
|
|
if (!isset($new_class_storage->pseudo_property_get_types['$' . $prop_name])) {
|
|
$naive_property_exists = true;
|
|
}
|
|
|
|
$property_id = $new_property_id;
|
|
}
|
|
}
|
|
|
|
if ((!$naive_property_exists
|
|
|| ($stmt_var_id !== '$this'
|
|
&& $fq_class_name !== $context->self
|
|
&& ClassLikeAnalyzer::checkPropertyVisibility(
|
|
$property_id,
|
|
$context,
|
|
$statements_analyzer,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt),
|
|
$statements_analyzer->getSuppressedIssues(),
|
|
false
|
|
) !== true)
|
|
)
|
|
&& $codebase->methods->methodExists(
|
|
$get_method_id,
|
|
$context->calling_method_id,
|
|
$codebase->collect_locations
|
|
? new CodeLocation($statements_analyzer->getSource(), $stmt)
|
|
: null,
|
|
!$context->collect_initializations
|
|
&& !$context->collect_mutations
|
|
? $statements_analyzer
|
|
: null,
|
|
$statements_analyzer->getFilePath()
|
|
)
|
|
) {
|
|
$has_magic_getter = true;
|
|
|
|
if (isset($class_storage->pseudo_property_get_types['$' . $prop_name])) {
|
|
$stmt_type = clone $class_storage->pseudo_property_get_types['$' . $prop_name];
|
|
|
|
$statements_analyzer->node_data->setType($stmt, $stmt_type);
|
|
|
|
self::processTaints($statements_analyzer, $stmt, $stmt_type, $property_id);
|
|
continue;
|
|
}
|
|
|
|
$old_data_provider = $statements_analyzer->node_data;
|
|
|
|
$statements_analyzer->node_data = clone $statements_analyzer->node_data;
|
|
|
|
$fake_method_call = new PhpParser\Node\Expr\MethodCall(
|
|
$stmt->var,
|
|
new PhpParser\Node\Identifier('__get', $stmt->name->getAttributes()),
|
|
[
|
|
new PhpParser\Node\Arg(
|
|
new PhpParser\Node\Scalar\String_(
|
|
$prop_name,
|
|
$stmt->name->getAttributes()
|
|
)
|
|
)
|
|
]
|
|
);
|
|
|
|
$suppressed_issues = $statements_analyzer->getSuppressedIssues();
|
|
|
|
if (!in_array('PossiblyNullReference', $suppressed_issues, true)) {
|
|
$statements_analyzer->addSuppressedIssues(['PossiblyNullReference']);
|
|
}
|
|
|
|
if (!in_array('InternalMethod', $suppressed_issues, true)) {
|
|
$statements_analyzer->addSuppressedIssues(['InternalMethod']);
|
|
}
|
|
|
|
\Psalm\Internal\Analyzer\Statements\Expression\Call\MethodCallAnalyzer::analyze(
|
|
$statements_analyzer,
|
|
$fake_method_call,
|
|
$context,
|
|
false
|
|
);
|
|
|
|
if (!in_array('PossiblyNullReference', $suppressed_issues, true)) {
|
|
$statements_analyzer->removeSuppressedIssues(['PossiblyNullReference']);
|
|
}
|
|
|
|
if (!in_array('InternalMethod', $suppressed_issues, true)) {
|
|
$statements_analyzer->removeSuppressedIssues(['InternalMethod']);
|
|
}
|
|
|
|
$fake_method_call_type = $statements_analyzer->node_data->getType($fake_method_call);
|
|
|
|
$statements_analyzer->node_data = $old_data_provider;
|
|
|
|
if ($fake_method_call_type) {
|
|
$statements_analyzer->node_data->setType($stmt, $fake_method_call_type);
|
|
} else {
|
|
$statements_analyzer->node_data->setType($stmt, Type::getMixed());
|
|
}
|
|
|
|
$property_id = $lhs_type_part->value . '::$' . $prop_name;
|
|
|
|
/*
|
|
* If we have an explicit list of all allowed magic properties on the class, and we're
|
|
* not in that list, fall through
|
|
*/
|
|
if (!$class_storage->sealed_properties && !$override_property_visibility) {
|
|
continue;
|
|
}
|
|
|
|
if (!$class_exists) {
|
|
$property_id = $lhs_type_part->value . '::$' . $prop_name;
|
|
|
|
if (IssueBuffer::accepts(
|
|
new UndefinedMagicPropertyFetch(
|
|
'Magic instance property ' . $property_id . ' is not defined',
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt),
|
|
$property_id
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if ($codebase->store_node_types
|
|
&& !$context->collect_initializations
|
|
&& !$context->collect_mutations
|
|
) {
|
|
$codebase->analyzer->addNodeReference(
|
|
$statements_analyzer->getFilePath(),
|
|
$stmt->name,
|
|
$property_id
|
|
);
|
|
}
|
|
|
|
$config = $statements_analyzer->getProjectAnalyzer()->getConfig();
|
|
|
|
if (!$naive_property_exists) {
|
|
if ($config->use_phpdoc_property_without_magic_or_parent
|
|
&& isset($class_storage->pseudo_property_get_types['$' . $prop_name])
|
|
) {
|
|
$stmt_type = clone $class_storage->pseudo_property_get_types['$' . $prop_name];
|
|
|
|
$statements_analyzer->node_data->setType($stmt, $stmt_type);
|
|
|
|
self::processTaints($statements_analyzer, $stmt, $stmt_type, $property_id);
|
|
continue;
|
|
}
|
|
|
|
if ($fq_class_name !== $context->self
|
|
&& $context->self
|
|
&& $codebase->properties->propertyExists(
|
|
$context->self . '::$' . $prop_name,
|
|
true,
|
|
$statements_analyzer,
|
|
$context,
|
|
$codebase->collect_locations
|
|
? new CodeLocation($statements_analyzer->getSource(), $stmt)
|
|
: null
|
|
)
|
|
) {
|
|
$property_id = $context->self . '::$' . $prop_name;
|
|
} else {
|
|
if ($context->inside_isset || $context->collect_initializations) {
|
|
return true;
|
|
}
|
|
|
|
if ($stmt_var_id === '$this') {
|
|
if (IssueBuffer::accepts(
|
|
new UndefinedThisPropertyFetch(
|
|
'Instance property ' . $property_id . ' is not defined',
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt),
|
|
$property_id
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
} else {
|
|
if ($has_magic_getter) {
|
|
if (IssueBuffer::accepts(
|
|
new UndefinedMagicPropertyFetch(
|
|
'Magic 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
|
|
}
|
|
}
|
|
}
|
|
|
|
$stmt_type = Type::getMixed();
|
|
|
|
$statements_analyzer->node_data->setType($stmt, $stmt_type);
|
|
|
|
if ($var_id) {
|
|
$context->vars_in_scope[$var_id] = $stmt_type;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (!$override_property_visibility) {
|
|
if (ClassLikeAnalyzer::checkPropertyVisibility(
|
|
$property_id,
|
|
$context,
|
|
$statements_analyzer,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
) === false) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
$declaring_property_class = $codebase->properties->getDeclaringClassForProperty(
|
|
$property_id,
|
|
true,
|
|
$statements_analyzer
|
|
);
|
|
|
|
if ($declaring_property_class === null) {
|
|
continue;
|
|
}
|
|
|
|
if ($codebase->properties_to_rename) {
|
|
$declaring_property_id = strtolower($declaring_property_class) . '::$' . $prop_name;
|
|
|
|
foreach ($codebase->properties_to_rename as $original_property_id => $new_property_name) {
|
|
if ($declaring_property_id === $original_property_id) {
|
|
$file_manipulations = [
|
|
new \Psalm\FileManipulation(
|
|
(int) $stmt->name->getAttribute('startFilePos'),
|
|
(int) $stmt->name->getAttribute('endFilePos') + 1,
|
|
$new_property_name
|
|
)
|
|
];
|
|
|
|
\Psalm\Internal\FileManipulation\FileManipulationBuffer::add(
|
|
$statements_analyzer->getFilePath(),
|
|
$file_manipulations
|
|
);
|
|
}
|
|
}
|
|
}
|
|
|
|
$declaring_class_storage = $codebase->classlike_storage_provider->get(
|
|
$declaring_property_class
|
|
);
|
|
|
|
if (isset($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 && $context->self) {
|
|
if (! NamespaceAnalyzer::isWithin($context->self, $property_storage->psalm_internal)) {
|
|
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 && $context->self) {
|
|
if (! NamespaceAnalyzer::nameSpaceRootsMatch($context->self, $declaring_property_class)) {
|
|
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,
|
|
$context
|
|
);
|
|
|
|
if (!$class_property_type) {
|
|
if ($declaring_class_storage->location
|
|
&& $config->isInProjectDirs(
|
|
$declaring_class_storage->location->file_path
|
|
)
|
|
) {
|
|
if (IssueBuffer::accepts(
|
|
new MissingPropertyType(
|
|
'Property ' . $fq_class_name . '::$' . $prop_name
|
|
. ' does not have a declared type',
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
}
|
|
|
|
$class_property_type = Type::getMixed();
|
|
} else {
|
|
$class_property_type = \Psalm\Internal\Type\TypeExpander::expandUnion(
|
|
$codebase,
|
|
clone $class_property_type,
|
|
$declaring_class_storage->name,
|
|
$declaring_class_storage->name,
|
|
$declaring_class_storage->parent_class
|
|
);
|
|
|
|
if ($declaring_class_storage->template_types) {
|
|
if (!$lhs_type_part instanceof TGenericObject) {
|
|
$type_params = [];
|
|
|
|
foreach ($declaring_class_storage->template_types as $type_map) {
|
|
$type_params[] = clone array_values($type_map)[0][0];
|
|
}
|
|
|
|
$lhs_type_part = new TGenericObject($lhs_type_part->value, $type_params);
|
|
}
|
|
|
|
$class_property_type = self::localizePropertyType(
|
|
$codebase,
|
|
$class_property_type,
|
|
$lhs_type_part,
|
|
$class_storage,
|
|
$declaring_class_storage
|
|
);
|
|
}
|
|
|
|
if ($lhs_type_part instanceof TGenericObject) {
|
|
$class_property_type = self::localizePropertyType(
|
|
$codebase,
|
|
$class_property_type,
|
|
$lhs_type_part,
|
|
$class_storage,
|
|
$declaring_class_storage
|
|
);
|
|
}
|
|
}
|
|
|
|
self::processTaints($statements_analyzer, $stmt, $class_property_type, $property_id);
|
|
|
|
if ($stmt_type = $statements_analyzer->node_data->getType($stmt)) {
|
|
$statements_analyzer->node_data->setType(
|
|
$stmt,
|
|
Type::combineUnionTypes($class_property_type, $stmt_type)
|
|
);
|
|
} else {
|
|
$statements_analyzer->node_data->setType($stmt, $class_property_type);
|
|
}
|
|
}
|
|
|
|
$stmt_type = $statements_analyzer->node_data->getType($stmt);
|
|
|
|
if ($stmt_var_type->isNullable() && !$context->inside_isset && $stmt_type) {
|
|
$stmt_type->addType(new TNull);
|
|
|
|
if ($stmt_var_type->ignore_nullable_issues) {
|
|
$stmt_type->ignore_nullable_issues = true;
|
|
}
|
|
}
|
|
|
|
if ($codebase->store_node_types
|
|
&& !$context->collect_initializations
|
|
&& !$context->collect_mutations
|
|
&& ($stmt_type = $statements_analyzer->node_data->getType($stmt))
|
|
) {
|
|
$codebase->analyzer->addNodeType(
|
|
$statements_analyzer->getFilePath(),
|
|
$stmt->name,
|
|
$stmt_type->getId()
|
|
);
|
|
}
|
|
|
|
if ($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 ' . $lhs_type_part,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
} else {
|
|
if (IssueBuffer::accepts(
|
|
new InvalidPropertyFetch(
|
|
'Cannot fetch property on non-object ' . $stmt_var_id . ' of type ' . $lhs_type_part,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($var_id) {
|
|
$context->vars_in_scope[$var_id] = $statements_analyzer->node_data->getType($stmt) ?: Type::getMixed();
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
public static function localizePropertyType(
|
|
\Psalm\Codebase $codebase,
|
|
Type\Union $class_property_type,
|
|
TGenericObject $lhs_type_part,
|
|
ClassLikeStorage $calling_class_storage,
|
|
ClassLikeStorage $declaring_class_storage
|
|
) : Type\Union {
|
|
$template_types = CallAnalyzer::getTemplateTypesForCall(
|
|
$declaring_class_storage,
|
|
$calling_class_storage,
|
|
$calling_class_storage->template_types ?: []
|
|
);
|
|
|
|
$extended_types = $calling_class_storage->template_type_extends;
|
|
|
|
if ($template_types) {
|
|
if ($calling_class_storage->template_types) {
|
|
foreach ($lhs_type_part->type_params as $param_offset => $lhs_param_type) {
|
|
$i = -1;
|
|
|
|
foreach ($calling_class_storage->template_types as $calling_param_name => $_) {
|
|
$i++;
|
|
|
|
if ($i === $param_offset) {
|
|
$template_types[$calling_param_name][$calling_class_storage->name] = [
|
|
$lhs_param_type,
|
|
0
|
|
];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
foreach ($template_types as $type_name => $_) {
|
|
if (isset($extended_types[$declaring_class_storage->name][$type_name])) {
|
|
$mapped_type = $extended_types[$declaring_class_storage->name][$type_name];
|
|
|
|
foreach ($mapped_type->getAtomicTypes() as $mapped_type_atomic) {
|
|
if (!$mapped_type_atomic instanceof Type\Atomic\TTemplateParam) {
|
|
continue;
|
|
}
|
|
|
|
$param_name = $mapped_type_atomic->param_name;
|
|
|
|
$position = false;
|
|
|
|
if (isset($calling_class_storage->template_types[$param_name])) {
|
|
$position = \array_search(
|
|
$param_name,
|
|
array_keys($calling_class_storage->template_types)
|
|
);
|
|
}
|
|
|
|
if ($position !== false && isset($lhs_type_part->type_params[$position])) {
|
|
$template_types[$type_name][$declaring_class_storage->name] = [
|
|
$lhs_type_part->type_params[$position],
|
|
0
|
|
];
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$class_property_type->replaceTemplateTypesWithArgTypes(
|
|
new TemplateResult([], $template_types),
|
|
$codebase
|
|
);
|
|
}
|
|
|
|
return $class_property_type;
|
|
}
|
|
|
|
private static function processTaints(
|
|
StatementsAnalyzer $statements_analyzer,
|
|
PhpParser\Node\Expr\PropertyFetch $stmt,
|
|
Type\Union $type,
|
|
string $property_id
|
|
) : void {
|
|
$codebase = $statements_analyzer->getCodebase();
|
|
|
|
if ($codebase->taint) {
|
|
$code_location = new CodeLocation($statements_analyzer, $stmt->name);
|
|
|
|
$localized_property_node = new TaintNode(
|
|
$property_id . '-' . $code_location->file_name . ':' . $code_location->raw_file_start,
|
|
$property_id,
|
|
$code_location,
|
|
null
|
|
);
|
|
|
|
$codebase->taint->addTaintNode($localized_property_node);
|
|
|
|
$property_node = new TaintNode(
|
|
$property_id,
|
|
$property_id,
|
|
null,
|
|
null
|
|
);
|
|
|
|
$codebase->taint->addTaintNode($property_node);
|
|
|
|
$codebase->taint->addPath($property_node, $localized_property_node);
|
|
|
|
$type->parent_nodes = [$localized_property_node];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param StatementsAnalyzer $statements_analyzer
|
|
* @param PhpParser\Node\Expr\StaticPropertyFetch $stmt
|
|
* @param Context $context
|
|
*/
|
|
public static function analyzeStatic(
|
|
StatementsAnalyzer $statements_analyzer,
|
|
PhpParser\Node\Expr\StaticPropertyFetch $stmt,
|
|
Context $context
|
|
) : bool {
|
|
if ($stmt->class instanceof PhpParser\Node\Expr\Variable ||
|
|
$stmt->class instanceof PhpParser\Node\Expr\ArrayDimFetch
|
|
) {
|
|
// @todo check this
|
|
return true;
|
|
}
|
|
|
|
$fq_class_name = null;
|
|
|
|
$codebase = $statements_analyzer->getCodebase();
|
|
|
|
if ($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') {
|
|
$fq_class_name = $statements_analyzer->getParentFQCLN();
|
|
|
|
if ($fq_class_name === null) {
|
|
if (IssueBuffer::accepts(
|
|
new ParentNotFound(
|
|
'Cannot check property fetch on parent as this class does not extend another',
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt)
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
} else {
|
|
$fq_class_name = (string)$context->self;
|
|
}
|
|
|
|
if ($context->isPhantomClass($fq_class_name)) {
|
|
return true;
|
|
}
|
|
} else {
|
|
$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,
|
|
'use:' . $stmt->class->parts[0] . ':' . \md5($statements_analyzer->getFilePath())
|
|
);
|
|
}
|
|
|
|
$fq_class_name = ClassLikeAnalyzer::getFQCLNFromNameObject(
|
|
$stmt->class,
|
|
$aliases
|
|
);
|
|
|
|
if ($context->isPhantomClass($fq_class_name)) {
|
|
return true;
|
|
}
|
|
|
|
if ($context->check_classes) {
|
|
if (ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
|
|
$statements_analyzer,
|
|
$fq_class_name,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt->class),
|
|
$context->self,
|
|
$context->calling_method_id,
|
|
$statements_analyzer->getSuppressedIssues(),
|
|
false
|
|
) !== true) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($fq_class_name
|
|
&& $codebase->methods_to_move
|
|
&& $context->calling_method_id
|
|
&& isset($codebase->methods_to_move[$context->calling_method_id])
|
|
) {
|
|
$destination_method_id = $codebase->methods_to_move[$context->calling_method_id];
|
|
|
|
$codebase->classlikes->airliftClassLikeReference(
|
|
$fq_class_name,
|
|
explode('::', $destination_method_id)[0],
|
|
$statements_analyzer->getFilePath(),
|
|
(int) $stmt->class->getAttribute('startFilePos'),
|
|
(int) $stmt->class->getAttribute('endFilePos') + 1
|
|
);
|
|
}
|
|
|
|
if ($fq_class_name) {
|
|
$statements_analyzer->node_data->setType(
|
|
$stmt->class,
|
|
new Type\Union([new TNamedObject($fq_class_name)])
|
|
);
|
|
}
|
|
}
|
|
|
|
if ($stmt->name instanceof PhpParser\Node\VarLikeIdentifier) {
|
|
$prop_name = $stmt->name->name;
|
|
} elseif (($stmt_name_type = $statements_analyzer->node_data->getType($stmt->name))
|
|
&& $stmt_name_type->isSingleStringLiteral()
|
|
) {
|
|
$prop_name = $stmt_name_type->getSingleStringLiteral()->value;
|
|
} else {
|
|
$prop_name = null;
|
|
}
|
|
|
|
if (!$prop_name) {
|
|
if ($fq_class_name) {
|
|
$codebase->analyzer->addMixedMemberName(
|
|
strtolower($fq_class_name) . '::$',
|
|
$context->calling_method_id ?: $statements_analyzer->getFileName()
|
|
);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
if (!$fq_class_name
|
|
|| !$context->check_classes
|
|
|| !$context->check_variables
|
|
|| ExpressionAnalyzer::isMock($fq_class_name)
|
|
) {
|
|
return true;
|
|
}
|
|
|
|
$var_id = ExpressionIdentifier::getVarId(
|
|
$stmt,
|
|
$context->self ?: $statements_analyzer->getFQCLN(),
|
|
$statements_analyzer
|
|
);
|
|
|
|
$property_id = $fq_class_name . '::$' . $prop_name;
|
|
|
|
if ($codebase->store_node_types
|
|
&& !$context->collect_initializations
|
|
&& !$context->collect_mutations
|
|
) {
|
|
$codebase->analyzer->addNodeReference(
|
|
$statements_analyzer->getFilePath(),
|
|
$stmt->name,
|
|
$property_id
|
|
);
|
|
}
|
|
|
|
if ($context->mutation_free) {
|
|
if (IssueBuffer::accepts(
|
|
new \Psalm\Issue\ImpureStaticProperty(
|
|
'Cannot use a static property in a mutation-free context',
|
|
new CodeLocation($statements_analyzer, $stmt)
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
}
|
|
|
|
if ($var_id && $context->hasVariable($var_id, $statements_analyzer)) {
|
|
$stmt_type = $context->vars_in_scope[$var_id];
|
|
|
|
// we don't need to check anything
|
|
$statements_analyzer->node_data->setType($stmt, $stmt_type);
|
|
|
|
if ($codebase->collect_references) {
|
|
// log the appearance
|
|
$codebase->properties->propertyExists(
|
|
$property_id,
|
|
true,
|
|
$statements_analyzer,
|
|
$context,
|
|
$codebase->collect_locations
|
|
? new CodeLocation($statements_analyzer->getSource(), $stmt)
|
|
: null
|
|
);
|
|
}
|
|
|
|
if ($codebase->store_node_types
|
|
&& !$context->collect_initializations
|
|
&& !$context->collect_mutations
|
|
&& ($stmt_type = $statements_analyzer->node_data->getType($stmt))
|
|
) {
|
|
$codebase->analyzer->addNodeType(
|
|
$statements_analyzer->getFilePath(),
|
|
$stmt->name,
|
|
$stmt_type->getId()
|
|
);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
if (!$codebase->properties->propertyExists(
|
|
$property_id,
|
|
true,
|
|
$statements_analyzer,
|
|
$context,
|
|
$codebase->collect_locations
|
|
? new CodeLocation($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
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
if (ClassLikeAnalyzer::checkPropertyVisibility(
|
|
$property_id,
|
|
$context,
|
|
$statements_analyzer,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
) === false) {
|
|
return false;
|
|
}
|
|
|
|
$declaring_property_class = $codebase->properties->getDeclaringClassForProperty(
|
|
$fq_class_name . '::$' . $prop_name,
|
|
true,
|
|
$statements_analyzer
|
|
);
|
|
|
|
if ($declaring_property_class === null) {
|
|
return false;
|
|
}
|
|
|
|
$declaring_property_id = strtolower($declaring_property_class) . '::$' . $prop_name;
|
|
|
|
if ($codebase->alter_code && $stmt->class instanceof PhpParser\Node\Name) {
|
|
$moved_class = $codebase->classlikes->handleClassLikeReferenceInMigration(
|
|
$codebase,
|
|
$statements_analyzer,
|
|
$stmt->class,
|
|
$fq_class_name,
|
|
$context->calling_method_id
|
|
);
|
|
|
|
if (!$moved_class) {
|
|
foreach ($codebase->property_transforms as $original_pattern => $transformation) {
|
|
if ($declaring_property_id === $original_pattern) {
|
|
list($old_declaring_fq_class_name) = explode('::$', $declaring_property_id);
|
|
list($new_fq_class_name, $new_property_name) = explode('::$', $transformation);
|
|
|
|
$file_manipulations = [];
|
|
|
|
if (strtolower($new_fq_class_name) !== strtolower($old_declaring_fq_class_name)) {
|
|
$file_manipulations[] = new \Psalm\FileManipulation(
|
|
(int) $stmt->class->getAttribute('startFilePos'),
|
|
(int) $stmt->class->getAttribute('endFilePos') + 1,
|
|
Type::getStringFromFQCLN(
|
|
$new_fq_class_name,
|
|
$statements_analyzer->getNamespace(),
|
|
$statements_analyzer->getAliasedClassesFlipped(),
|
|
null
|
|
)
|
|
);
|
|
}
|
|
|
|
$file_manipulations[] = new \Psalm\FileManipulation(
|
|
(int) $stmt->name->getAttribute('startFilePos'),
|
|
(int) $stmt->name->getAttribute('endFilePos') + 1,
|
|
'$' . $new_property_name
|
|
);
|
|
|
|
FileManipulationBuffer::add($statements_analyzer->getFilePath(), $file_manipulations);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
$class_storage = $codebase->classlike_storage_provider->get($declaring_property_class);
|
|
$property = $class_storage->properties[$prop_name];
|
|
|
|
if ($var_id) {
|
|
if ($property->type) {
|
|
$context->vars_in_scope[$var_id] = \Psalm\Internal\Type\TypeExpander::expandUnion(
|
|
$codebase,
|
|
clone $property->type,
|
|
$class_storage->name,
|
|
$class_storage->name,
|
|
$class_storage->parent_class
|
|
);
|
|
} else {
|
|
$context->vars_in_scope[$var_id] = Type::getMixed();
|
|
}
|
|
|
|
$stmt_type = clone $context->vars_in_scope[$var_id];
|
|
|
|
$statements_analyzer->node_data->setType($stmt, $stmt_type);
|
|
|
|
if ($codebase->store_node_types
|
|
&& !$context->collect_initializations
|
|
&& !$context->collect_mutations
|
|
) {
|
|
$codebase->analyzer->addNodeType(
|
|
$statements_analyzer->getFilePath(),
|
|
$stmt->name,
|
|
$stmt_type->getId()
|
|
);
|
|
}
|
|
} else {
|
|
$statements_analyzer->node_data->setType($stmt, Type::getMixed());
|
|
}
|
|
|
|
return true;
|
|
}
|
|
}
|