mirror of
https://github.com/danog/psalm.git
synced 2024-12-15 02:47:02 +01:00
1028 lines
39 KiB
PHP
1028 lines
39 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\StatementsAnalyzer;
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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\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\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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/**
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* @internal
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*/
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class PropertyFetchAnalyzer
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{
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/**
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* @param StatementsAnalyzer $statements_analyzer
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* @param PhpParser\Node\Expr\PropertyFetch $stmt
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* @param Context $context
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*
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* @return false|null
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*/
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public static function analyzeInstance(
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StatementsAnalyzer $statements_analyzer,
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PhpParser\Node\Expr\PropertyFetch $stmt,
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Context $context
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) {
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if (!$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 = $stmt->name->name;
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} elseif (isset($stmt->name->inferredType)
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&& $stmt->name->inferredType->isSingleStringLiteral()
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) {
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$prop_name = $stmt->name->inferredType->getSingleStringLiteral()->value;
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} else {
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$prop_name = null;
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}
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$codebase = $statements_analyzer->getCodebase();
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$stmt_var_id = ExpressionAnalyzer::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 = ExpressionAnalyzer::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_var_type = null;
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$stmt->inferredType = null;
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if ($var_id && $context->hasVariable($var_id, $statements_analyzer)) {
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// we don't need to check anything
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$stmt->inferredType = $context->vars_in_scope[$var_id];
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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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(string) $stmt->inferredType
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);
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}
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if ($stmt_var_id === '$this'
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&& !$stmt->inferredType->initialized
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&& $context->collect_initializations
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&& isset($stmt->var->inferredType)
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&& $stmt->var->inferredType->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->inferredType->getTypes() 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 (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->inferredType->addType(new Type\Atomic\TNull);
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}
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}
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if (isset($stmt->var->inferredType)
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&& $stmt->var->inferredType->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->inferredType->getTypes() 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 = $lhs_type_part->value . '::$' . $stmt->name->name;
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$codebase->properties->propertyExists(
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$property_id,
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false,
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$statements_analyzer,
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$context,
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$context->collect_references
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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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$codebase->analyzer->addNodeReference(
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$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 null;
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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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} elseif (isset($stmt->var->inferredType)) {
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$stmt_var_type = $stmt->var->inferredType;
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}
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if (!$stmt_var_type) {
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return null;
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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 null;
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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 null;
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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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if ($stmt_var_type->hasMixed()) {
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$stmt->inferredType = 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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(string) $stmt->inferredType
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);
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}
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return null;
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}
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}
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if (!$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 && !$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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$stmt->inferredType = Type::getNull();
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}
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if (!$prop_name) {
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if ($stmt_var_type->hasObjectType() && !$context->ignore_variable_property) {
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foreach ($stmt_var_type->getTypes() 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 ?: $statements_analyzer->getFileName()
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);
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}
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}
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}
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return null;
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}
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$invalid_fetch_types = [];
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$has_valid_fetch_type = false;
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foreach ($stmt_var_type->getTypes() 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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$lhs_type_part->as->getTypes()
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)[0];
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$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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$stmt->inferredType = Type::getMixed();
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continue;
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}
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if ($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[$prop_name])
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) {
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if (isset($stmt->inferredType)) {
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$stmt->inferredType = Type::combineUnionTypes(
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$lhs_type_part->properties[$prop_name],
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$stmt->inferredType
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);
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} else {
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$stmt->inferredType = $lhs_type_part->properties[$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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$stmt->inferredType = Type::getMixed();
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continue;
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}
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if (ExpressionAnalyzer::isMock($lhs_type_part->value)) {
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$stmt->inferredType = Type::getMixed();
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continue;
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}
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$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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$class_exists = false;
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$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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$statements_analyzer->getSuppressedIssues()
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)) {
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return null;
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}
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if (!$codebase->methodExists($fq_class_name . '::__set')) {
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return null;
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}
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}
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}
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if (!$class_exists && !$interface_exists) {
|
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if ($lhs_type_part->from_docblock) {
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if (IssueBuffer::accepts(
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new UndefinedDocblockClass(
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'Cannot set properties of undefined docblock class ' . $lhs_type_part->value,
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new CodeLocation($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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// fall through
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}
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} else {
|
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if (IssueBuffer::accepts(
|
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new UndefinedClass(
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'Cannot set properties of undefined class ' . $lhs_type_part->value,
|
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new CodeLocation($statements_analyzer->getSource(), $stmt),
|
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$lhs_type_part->value
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),
|
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$statements_analyzer->getSuppressedIssues()
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)) {
|
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// fall through
|
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}
|
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}
|
|
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return null;
|
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}
|
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} else {
|
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$class_exists = true;
|
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}
|
|
|
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$property_id = $fq_class_name . '::$' . $prop_name;
|
|
|
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if ($codebase->methodExists($fq_class_name . '::__get')
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&& (!$codebase->properties->propertyExists($property_id, false, $statements_analyzer, $context)
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|| ($stmt_var_id !== '$this'
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&& $fq_class_name !== $context->self
|
|
&& ClassLikeAnalyzer::checkPropertyVisibility(
|
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$property_id,
|
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$context,
|
|
$statements_analyzer,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt),
|
|
$statements_analyzer->getSuppressedIssues(),
|
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false
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) !== true)
|
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)
|
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) {
|
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$class_storage = $codebase->classlike_storage_provider->get($fq_class_name);
|
|
|
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if (isset($class_storage->pseudo_property_get_types['$' . $prop_name])) {
|
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$stmt->inferredType = clone $class_storage->pseudo_property_get_types['$' . $prop_name];
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continue;
|
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}
|
|
|
|
$fake_method_call = new PhpParser\Node\Expr\MethodCall(
|
|
$stmt->var,
|
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new PhpParser\Node\Identifier('__get', $stmt->name->getAttributes()),
|
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[
|
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new PhpParser\Node\Arg(
|
|
new PhpParser\Node\Scalar\String_(
|
|
$prop_name,
|
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$stmt->name->getAttributes()
|
|
)
|
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)
|
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]
|
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);
|
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|
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$suppressed_issues = $statements_analyzer->getSuppressedIssues();
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|
|
if (!in_array('PossiblyNullReference', $suppressed_issues, true)) {
|
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$statements_analyzer->addSuppressedIssues(['PossiblyNullReference']);
|
|
}
|
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|
|
if (!in_array('InternalMethod', $suppressed_issues, true)) {
|
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$statements_analyzer->addSuppressedIssues(['InternalMethod']);
|
|
}
|
|
|
|
\Psalm\Internal\Analyzer\Statements\Expression\Call\MethodCallAnalyzer::analyze(
|
|
$statements_analyzer,
|
|
$fake_method_call,
|
|
$context,
|
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false
|
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);
|
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|
|
if (!in_array('PossiblyNullReference', $suppressed_issues, true)) {
|
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$statements_analyzer->removeSuppressedIssues(['PossiblyNullReference']);
|
|
}
|
|
|
|
if (!in_array('InternalMethod', $suppressed_issues, true)) {
|
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$statements_analyzer->removeSuppressedIssues(['InternalMethod']);
|
|
}
|
|
|
|
$stmt->inferredType = $fake_method_call->inferredType ?? Type::getMixed();
|
|
|
|
/*
|
|
* If we have an explicit list of all allowed magic properties on the class, and we're
|
|
* not in that list, fall through
|
|
*/
|
|
if (!$class_storage->sealed_properties && !$override_property_visibility) {
|
|
continue;
|
|
}
|
|
|
|
if (!$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;
|
|
}
|
|
|
|
if ($codebase->store_node_types) {
|
|
$codebase->analyzer->addNodeReference(
|
|
$statements_analyzer->getFilePath(),
|
|
$stmt->name,
|
|
$property_id
|
|
);
|
|
}
|
|
|
|
if (!$codebase->properties->propertyExists(
|
|
$property_id,
|
|
false,
|
|
$statements_analyzer,
|
|
$context,
|
|
$context->collect_references ? new CodeLocation($statements_analyzer->getSource(), $stmt) : null
|
|
)
|
|
) {
|
|
if ($fq_class_name !== $context->self
|
|
&& $context->self
|
|
&& $codebase->properties->propertyExists(
|
|
$context->self . '::$' . $prop_name,
|
|
false,
|
|
$statements_analyzer,
|
|
$context,
|
|
$context->collect_references ? new CodeLocation($statements_analyzer->getSource(), $stmt) : null
|
|
)
|
|
) {
|
|
$property_id = $context->self . '::$' . $prop_name;
|
|
} else {
|
|
if ($context->inside_isset || $context->collect_initializations) {
|
|
return;
|
|
}
|
|
|
|
if ($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
|
|
}
|
|
}
|
|
|
|
$stmt->inferredType = Type::getMixed();
|
|
|
|
if ($var_id) {
|
|
$context->vars_in_scope[$var_id] = $stmt->inferredType;
|
|
}
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (!$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 = (string) $codebase->properties->getDeclaringClassForProperty(
|
|
$property_id,
|
|
true
|
|
);
|
|
|
|
$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 (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 = ExpressionAnalyzer::fleshOutType(
|
|
$codebase,
|
|
clone $class_property_type,
|
|
$declaring_property_class,
|
|
$declaring_property_class,
|
|
$declaring_class_storage->parent_class
|
|
);
|
|
|
|
if ($lhs_type_part instanceof TGenericObject) {
|
|
$class_storage = $codebase->classlike_storage_provider->get($fq_class_name);
|
|
|
|
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 = $class_property_type;
|
|
}
|
|
}
|
|
|
|
if ($codebase->store_node_types
|
|
&& (!$context->collect_initializations
|
|
&& !$context->collect_mutations)
|
|
&& isset($stmt->inferredType)
|
|
) {
|
|
$codebase->analyzer->addNodeType(
|
|
$statements_analyzer->getFilePath(),
|
|
$stmt->name,
|
|
(string) $stmt->inferredType
|
|
);
|
|
}
|
|
|
|
if ($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] = isset($stmt->inferredType) ? $stmt->inferredType : Type::getMixed();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param StatementsAnalyzer $statements_analyzer
|
|
* @param PhpParser\Node\Expr\StaticPropertyFetch $stmt
|
|
* @param Context $context
|
|
*
|
|
* @return null|false
|
|
*/
|
|
public static function analyzeStatic(
|
|
StatementsAnalyzer $statements_analyzer,
|
|
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;
|
|
|
|
$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;
|
|
}
|
|
} else {
|
|
$fq_class_name = (string)$context->self;
|
|
}
|
|
|
|
if ($context->isPhantomClass($fq_class_name)) {
|
|
return null;
|
|
}
|
|
} 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($fq_class_name)) {
|
|
return null;
|
|
}
|
|
|
|
if ($context->check_classes) {
|
|
if (ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
|
|
$statements_analyzer,
|
|
$fq_class_name,
|
|
new CodeLocation($statements_analyzer->getSource(), $stmt->class),
|
|
$statements_analyzer->getSuppressedIssues(),
|
|
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) {
|
|
$codebase->analyzer->addMixedMemberName(
|
|
strtolower($fq_class_name) . '::$',
|
|
$context->calling_method_id ?: $statements_analyzer->getFileName()
|
|
);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
if (!$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
|
|
);
|
|
|
|
$property_id = $fq_class_name . '::$' . $prop_name;
|
|
|
|
if ($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(), $stmt)
|
|
);
|
|
}
|
|
|
|
if ($codebase->store_node_types
|
|
&& (!$context->collect_initializations
|
|
&& !$context->collect_mutations)
|
|
&& isset($stmt->inferredType)
|
|
) {
|
|
$codebase->analyzer->addNodeType(
|
|
$statements_analyzer->getFilePath(),
|
|
$stmt->name,
|
|
(string) $stmt->inferredType
|
|
);
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
if (!$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
|
|
),
|
|
$statements_analyzer->getSuppressedIssues()
|
|
)) {
|
|
// fall through
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
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
|
|
);
|
|
|
|
$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,
|
|
$class_storage->parent_class
|
|
);
|
|
} 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
|
|
);
|
|
}
|
|
} else {
|
|
$stmt->inferredType = Type::getMixed();
|
|
}
|
|
|
|
return null;
|
|
}
|
|
}
|