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864 lines
33 KiB
PHP
864 lines
33 KiB
PHP
<?php
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namespace Psalm\Internal\Analyzer\Statements\Block;
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use PhpParser;
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use Psalm\Codebase;
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use Psalm\Internal\Analyzer\ClassLikeAnalyzer;
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use Psalm\Internal\Analyzer\CommentAnalyzer;
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use Psalm\Internal\Analyzer\ScopeAnalyzer;
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use Psalm\Internal\Analyzer\Statements\Expression\AssignmentAnalyzer;
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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\Internal\Analyzer\TypeAnalyzer;
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use Psalm\CodeLocation;
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use Psalm\Context;
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use Psalm\Exception\DocblockParseException;
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use Psalm\Issue\InvalidDocblock;
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use Psalm\Issue\InvalidIterator;
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use Psalm\Issue\NullIterator;
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use Psalm\Issue\PossiblyFalseIterator;
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use Psalm\Issue\PossiblyInvalidIterator;
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use Psalm\Issue\PossiblyNullIterator;
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use Psalm\Issue\RawObjectIteration;
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use Psalm\IssueBuffer;
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use Psalm\Internal\Scope\LoopScope;
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use Psalm\Type;
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/**
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* @internal
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*/
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class ForeachAnalyzer
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{
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/**
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* @param StatementsAnalyzer $statements_analyzer
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* @param PhpParser\Node\Stmt\Foreach_ $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 analyze(
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StatementsAnalyzer $statements_analyzer,
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PhpParser\Node\Stmt\Foreach_ $stmt,
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Context $context
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) {
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$var_comments = [];
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$doc_comment_text = (string)$stmt->getDocComment();
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$codebase = $statements_analyzer->getCodebase();
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if ($doc_comment_text) {
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try {
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$var_comments = CommentAnalyzer::getTypeFromComment(
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$doc_comment_text,
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$statements_analyzer->getSource(),
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$statements_analyzer->getSource()->getAliases()
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);
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} catch (DocblockParseException $e) {
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if (IssueBuffer::accepts(
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new InvalidDocblock(
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(string)$e->getMessage(),
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new CodeLocation($statements_analyzer, $stmt)
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)
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)) {
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// fall through
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}
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}
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}
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$safe_var_ids = [];
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if ($stmt->keyVar instanceof PhpParser\Node\Expr\Variable && is_string($stmt->keyVar->name)) {
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$safe_var_ids['$' . $stmt->keyVar->name] = true;
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}
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if ($stmt->valueVar instanceof PhpParser\Node\Expr\Variable && is_string($stmt->valueVar->name)) {
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$safe_var_ids['$' . $stmt->valueVar->name] = true;
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} elseif ($stmt->valueVar instanceof PhpParser\Node\Expr\List_) {
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foreach ($stmt->valueVar->items as $list_item) {
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if (!$list_item) {
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continue;
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}
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$list_item_key = $list_item->key;
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$list_item_value = $list_item->value;
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if ($list_item_value instanceof PhpParser\Node\Expr\Variable && is_string($list_item_value->name)) {
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$safe_var_ids['$' . $list_item_value->name] = true;
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}
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if ($list_item_key instanceof PhpParser\Node\Expr\Variable && is_string($list_item_key->name)) {
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$safe_var_ids['$' . $list_item_key->name] = true;
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}
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}
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}
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foreach ($var_comments as $var_comment) {
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if (!$var_comment->var_id) {
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continue;
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}
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if (isset($safe_var_ids[$var_comment->var_id])) {
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continue;
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}
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$comment_type = ExpressionAnalyzer::fleshOutType(
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$codebase,
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$var_comment->type,
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$context->self,
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$context->self
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);
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if (isset($context->vars_in_scope[$var_comment->var_id])
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|| in_array(
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$var_comment->var_id,
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[
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'$GLOBALS',
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'$_SERVER',
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'$_GET',
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'$_POST',
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'$_FILES',
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'$_COOKIE',
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'$_SESSION',
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'$_REQUEST',
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'$_ENV',
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],
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true
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)
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) {
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$context->vars_in_scope[$var_comment->var_id] = $comment_type;
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}
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}
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if (ExpressionAnalyzer::analyze($statements_analyzer, $stmt->expr, $context) === false) {
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return false;
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}
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$key_type = null;
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$value_type = null;
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$always_non_empty_array = true;
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$var_id = ExpressionAnalyzer::getVarId(
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$stmt->expr,
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$statements_analyzer->getFQCLN(),
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$statements_analyzer
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);
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if (isset($stmt->expr->inferredType)) {
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$iterator_type = $stmt->expr->inferredType;
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} elseif ($var_id && $context->hasVariable($var_id, $statements_analyzer)) {
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$iterator_type = $context->vars_in_scope[$var_id];
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} else {
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$iterator_type = null;
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}
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if ($iterator_type) {
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if (self::checkIteratorType(
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$statements_analyzer,
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$stmt,
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$iterator_type,
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$codebase,
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$context,
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$key_type,
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$value_type,
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$always_non_empty_array
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) === false
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) {
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return false;
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}
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}
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$foreach_context = clone $context;
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$foreach_context->inside_loop = true;
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$foreach_context->inside_case = false;
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if ($codebase->alter_code) {
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$foreach_context->branch_point =
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$foreach_context->branch_point ?: (int) $stmt->getAttribute('startFilePos');
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}
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if ($stmt->keyVar && $stmt->keyVar instanceof PhpParser\Node\Expr\Variable && is_string($stmt->keyVar->name)) {
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$key_var_id = '$' . $stmt->keyVar->name;
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$foreach_context->vars_in_scope[$key_var_id] = $key_type ?: Type::getMixed();
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$foreach_context->vars_possibly_in_scope[$key_var_id] = true;
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$location = new CodeLocation($statements_analyzer, $stmt->keyVar);
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if ($context->collect_references && !isset($foreach_context->byref_constraints[$key_var_id])) {
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$foreach_context->unreferenced_vars[$key_var_id] = [$location->getHash() => $location];
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}
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if (!$statements_analyzer->hasVariable($key_var_id)) {
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$statements_analyzer->registerVariable(
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$key_var_id,
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$location,
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$foreach_context->branch_point
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);
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} else {
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$statements_analyzer->registerVariableAssignment(
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$key_var_id,
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$location
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);
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}
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if ($stmt->byRef && $context->collect_references) {
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$statements_analyzer->registerVariableUses([$location->getHash() => $location]);
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}
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}
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if ($context->collect_references
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&& $stmt->byRef
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&& $stmt->valueVar instanceof PhpParser\Node\Expr\Variable
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&& is_string($stmt->valueVar->name)
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) {
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$foreach_context->byref_constraints['$' . $stmt->valueVar->name]
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= new \Psalm\Internal\ReferenceConstraint($value_type);
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}
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AssignmentAnalyzer::analyze(
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$statements_analyzer,
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$stmt->valueVar,
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null,
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$value_type ?: Type::getMixed(),
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$foreach_context,
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$doc_comment_text
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);
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foreach ($var_comments as $var_comment) {
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if (!$var_comment->var_id) {
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continue;
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}
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$comment_type = ExpressionAnalyzer::fleshOutType(
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$codebase,
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$var_comment->type,
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$context->self,
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$context->self
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);
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$foreach_context->vars_in_scope[$var_comment->var_id] = $comment_type;
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}
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$loop_scope = new LoopScope($foreach_context, $context);
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$protected_var_ids = $context->protected_var_ids;
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if ($var_id) {
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$protected_var_ids[$var_id] = true;
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}
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$loop_scope->protected_var_ids = $protected_var_ids;
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LoopAnalyzer::analyze($statements_analyzer, $stmt->stmts, [], [], $loop_scope, $inner_loop_context);
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if (!$inner_loop_context) {
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throw new \UnexpectedValueException('There should be an inner loop context');
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}
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if ($always_non_empty_array) {
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foreach ($inner_loop_context->vars_in_scope as $var_id => $type) {
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// if there are break statements in the loop it's not certain
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// that the loop has finished executing, so the assertions at the end
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// the loop in the while conditional may not hold
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if (in_array(ScopeAnalyzer::ACTION_BREAK, $loop_scope->final_actions, true)
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|| in_array(ScopeAnalyzer::ACTION_CONTINUE, $loop_scope->final_actions, true)
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) {
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if (isset($loop_scope->possibly_defined_loop_parent_vars[$var_id])) {
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$context->vars_in_scope[$var_id] = Type::combineUnionTypes(
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$type,
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$loop_scope->possibly_defined_loop_parent_vars[$var_id]
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);
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}
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} else {
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$context->vars_in_scope[$var_id] = $type;
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}
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}
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}
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$foreach_context->loop_scope = null;
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$context->vars_possibly_in_scope = array_merge(
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$foreach_context->vars_possibly_in_scope,
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$context->vars_possibly_in_scope
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);
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$context->referenced_var_ids = array_merge(
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$foreach_context->referenced_var_ids,
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$context->referenced_var_ids
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);
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if ($context->collect_exceptions) {
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$context->possibly_thrown_exceptions += $foreach_context->possibly_thrown_exceptions;
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}
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if ($context->collect_references) {
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foreach ($foreach_context->unreferenced_vars as $var_id => $locations) {
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if (isset($context->unreferenced_vars[$var_id])) {
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$context->unreferenced_vars[$var_id] += $locations;
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} else {
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$context->unreferenced_vars[$var_id] = $locations;
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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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/**
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* @param ?Type\Union $key_type
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* @param ?Type\Union $value_type
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* @return false|null
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*/
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public static function checkIteratorType(
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StatementsAnalyzer $statements_analyzer,
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PhpParser\Node\Stmt\Foreach_ $stmt,
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Type\Union $iterator_type,
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Codebase $codebase,
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Context $context,
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&$key_type,
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&$value_type,
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bool &$always_non_empty_array
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) {
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if ($iterator_type->isNull()) {
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if (IssueBuffer::accepts(
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new NullIterator(
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'Cannot iterate over null',
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new CodeLocation($statements_analyzer->getSource(), $stmt->expr)
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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return false;
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}
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} elseif ($iterator_type->isNullable() && !$iterator_type->ignore_nullable_issues) {
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if (IssueBuffer::accepts(
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new PossiblyNullIterator(
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'Cannot iterate over nullable var ' . $iterator_type,
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new CodeLocation($statements_analyzer->getSource(), $stmt->expr)
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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return false;
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}
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} elseif ($iterator_type->isFalsable() && !$iterator_type->ignore_falsable_issues) {
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if (IssueBuffer::accepts(
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new PossiblyFalseIterator(
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'Cannot iterate over falsable var ' . $iterator_type,
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new CodeLocation($statements_analyzer->getSource(), $stmt->expr)
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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return false;
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}
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}
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$has_valid_iterator = false;
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$invalid_iterator_types = [];
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foreach ($iterator_type->getTypes() as $iterator_atomic_type) {
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if ($iterator_atomic_type instanceof Type\Atomic\TTemplateParam) {
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$iterator_atomic_type = array_values($iterator_atomic_type->as->getTypes())[0];
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}
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// if it's an empty array, we cannot iterate over it
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if ($iterator_atomic_type instanceof Type\Atomic\TArray
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&& $iterator_atomic_type->type_params[1]->isEmpty()
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) {
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$always_non_empty_array = false;
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$has_valid_iterator = true;
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continue;
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}
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if ($iterator_atomic_type instanceof Type\Atomic\TNull
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|| $iterator_atomic_type instanceof Type\Atomic\TFalse
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) {
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$always_non_empty_array = false;
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continue;
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}
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if ($iterator_atomic_type instanceof Type\Atomic\TArray
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|| $iterator_atomic_type instanceof Type\Atomic\ObjectLike
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) {
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if ($iterator_atomic_type instanceof Type\Atomic\ObjectLike) {
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if (!$iterator_atomic_type->sealed) {
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$always_non_empty_array = false;
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}
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$iterator_atomic_type = $iterator_atomic_type->getGenericArrayType();
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} elseif (!$iterator_atomic_type instanceof Type\Atomic\TNonEmptyArray) {
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$always_non_empty_array = false;
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}
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if (!$value_type) {
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$value_type = $iterator_atomic_type->type_params[1];
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} else {
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$value_type = Type::combineUnionTypes($value_type, $iterator_atomic_type->type_params[1]);
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}
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$key_type_part = $iterator_atomic_type->type_params[0];
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if (!$key_type) {
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$key_type = $key_type_part;
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} else {
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$key_type = Type::combineUnionTypes($key_type, $key_type_part);
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}
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$has_valid_iterator = true;
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continue;
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}
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$always_non_empty_array = false;
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if ($iterator_atomic_type instanceof Type\Atomic\Scalar ||
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$iterator_atomic_type instanceof Type\Atomic\TVoid
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) {
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$invalid_iterator_types[] = $iterator_atomic_type->getKey();
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$value_type = Type::getMixed();
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} elseif ($iterator_atomic_type instanceof Type\Atomic\TObject ||
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$iterator_atomic_type instanceof Type\Atomic\TMixed ||
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$iterator_atomic_type instanceof Type\Atomic\TEmpty
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) {
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$has_valid_iterator = true;
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$value_type = Type::getMixed();
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} elseif ($iterator_atomic_type instanceof Type\Atomic\TIterable) {
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$value_type_part = $iterator_atomic_type->type_params[1];
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$key_type_part = $iterator_atomic_type->type_params[0];
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if (!$value_type) {
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$value_type = $value_type_part;
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} else {
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$value_type = Type::combineUnionTypes($value_type, $value_type_part);
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}
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if (!$key_type) {
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$key_type = $key_type_part;
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} else {
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$key_type = Type::combineUnionTypes($key_type, $key_type_part);
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}
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$has_valid_iterator = true;
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} elseif ($iterator_atomic_type instanceof Type\Atomic\TNamedObject) {
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if ($iterator_atomic_type->value !== 'Traversable' &&
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$iterator_atomic_type->value !== $statements_analyzer->getClassName()
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) {
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if (ClassLikeAnalyzer::checkFullyQualifiedClassLikeName(
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$statements_analyzer,
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$iterator_atomic_type->value,
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new CodeLocation($statements_analyzer->getSource(), $stmt->expr),
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$statements_analyzer->getSuppressedIssues()
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) === false) {
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return false;
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}
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}
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if (TypeAnalyzer::isAtomicContainedBy(
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$codebase,
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$iterator_atomic_type,
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new Type\Atomic\TIterable([Type::getMixed(), Type::getMixed()])
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)) {
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self::handleIterable(
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$statements_analyzer,
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$iterator_atomic_type,
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$stmt->expr,
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$codebase,
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$context,
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$key_type,
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$value_type,
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$has_valid_iterator
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);
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} else {
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if (IssueBuffer::accepts(
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new RawObjectIteration(
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'Possibly undesired iteration over regular object ' . $iterator_atomic_type->value,
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new CodeLocation($statements_analyzer->getSource(), $stmt->expr)
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),
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$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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}
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}
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if ($invalid_iterator_types) {
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if ($has_valid_iterator) {
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if (IssueBuffer::accepts(
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new PossiblyInvalidIterator(
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'Cannot iterate over ' . $invalid_iterator_types[0],
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new CodeLocation($statements_analyzer->getSource(), $stmt->expr)
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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return false;
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}
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} else {
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if (IssueBuffer::accepts(
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new InvalidIterator(
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'Cannot iterate over ' . $invalid_iterator_types[0],
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new CodeLocation($statements_analyzer->getSource(), $stmt->expr)
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),
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$statements_analyzer->getSuppressedIssues()
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)) {
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return false;
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}
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}
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}
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}
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/**
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* @param ?Type\Union $key_type
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* @param ?Type\Union $value_type
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* @return void
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*/
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public static function handleIterable(
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StatementsAnalyzer $statements_analyzer,
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Type\Atomic\TNamedObject $iterator_atomic_type,
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PhpParser\Node\Expr $foreach_expr,
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Codebase $codebase,
|
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Context $context,
|
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&$key_type,
|
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&$value_type,
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bool &$has_valid_iterator
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) {
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if ($iterator_atomic_type->extra_types) {
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$iterator_atomic_type_copy = clone $iterator_atomic_type;
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$iterator_atomic_type_copy->extra_types = [];
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||
$iterator_atomic_types = [$iterator_atomic_type_copy];
|
||
$iterator_atomic_types = array_merge($iterator_atomic_types, $iterator_atomic_type->extra_types);
|
||
} else {
|
||
$iterator_atomic_types = [$iterator_atomic_type];
|
||
}
|
||
|
||
foreach ($iterator_atomic_types as $iterator_atomic_type) {
|
||
if ($iterator_atomic_type instanceof Type\Atomic\TTemplateParam) {
|
||
throw new \UnexpectedValueException('Shouldn’t get a generic param here');
|
||
}
|
||
|
||
$has_valid_iterator = true;
|
||
|
||
if ($iterator_atomic_type instanceof Type\Atomic\TIterable
|
||
|| (strtolower($iterator_atomic_type->value) === 'traversable'
|
||
|| $codebase->classImplements(
|
||
$iterator_atomic_type->value,
|
||
'Traversable'
|
||
) ||
|
||
(
|
||
$codebase->interfaceExists($iterator_atomic_type->value)
|
||
&& $codebase->interfaceExtends(
|
||
$iterator_atomic_type->value,
|
||
'Traversable'
|
||
)
|
||
))
|
||
) {
|
||
if (strtolower($iterator_atomic_type->value) === 'iteratoraggregate'
|
||
|| $codebase->classImplements(
|
||
$iterator_atomic_type->value,
|
||
'IteratorAggregate'
|
||
)
|
||
|| ($codebase->interfaceExists($iterator_atomic_type->value)
|
||
&& $codebase->interfaceExtends(
|
||
$iterator_atomic_type->value,
|
||
'IteratorAggregate'
|
||
)
|
||
)
|
||
) {
|
||
$fake_method_call = new PhpParser\Node\Expr\MethodCall(
|
||
$foreach_expr,
|
||
new PhpParser\Node\Identifier('getIterator', $foreach_expr->getAttributes())
|
||
);
|
||
|
||
$suppressed_issues = $statements_analyzer->getSuppressedIssues();
|
||
|
||
if (!in_array('PossiblyInvalidMethodCall', $suppressed_issues, true)) {
|
||
$statements_analyzer->addSuppressedIssues(['PossiblyInvalidMethodCall']);
|
||
}
|
||
|
||
\Psalm\Internal\Analyzer\Statements\Expression\Call\MethodCallAnalyzer::analyze(
|
||
$statements_analyzer,
|
||
$fake_method_call,
|
||
$context
|
||
);
|
||
|
||
if (!in_array('PossiblyInvalidMethodCall', $suppressed_issues, true)) {
|
||
$statements_analyzer->removeSuppressedIssues(['PossiblyInvalidMethodCall']);
|
||
}
|
||
|
||
$iterator_class_type = $fake_method_call->inferredType ?? null;
|
||
|
||
if ($iterator_class_type) {
|
||
foreach ($iterator_class_type->getTypes() as $array_atomic_type) {
|
||
$key_type_part = null;
|
||
$value_type_part = null;
|
||
|
||
if ($array_atomic_type instanceof Type\Atomic\TArray
|
||
|| $array_atomic_type instanceof Type\Atomic\ObjectLike
|
||
) {
|
||
if ($array_atomic_type instanceof Type\Atomic\ObjectLike) {
|
||
$array_atomic_type = $array_atomic_type->getGenericArrayType();
|
||
}
|
||
|
||
$key_type_part = $array_atomic_type->type_params[0];
|
||
$value_type_part = $array_atomic_type->type_params[1];
|
||
} else {
|
||
if ($array_atomic_type instanceof Type\Atomic\TIterable
|
||
|| ($array_atomic_type instanceof Type\Atomic\TNamedObject
|
||
&& (strtolower($array_atomic_type->value) === 'traversable'
|
||
|| ($codebase->classOrInterfaceExists($array_atomic_type->value)
|
||
&& $codebase->classImplements(
|
||
$array_atomic_type->value,
|
||
'Traversable'
|
||
))))
|
||
) {
|
||
self::getKeyValueParamsForTraversableObject(
|
||
$array_atomic_type,
|
||
$codebase,
|
||
$key_type_part,
|
||
$value_type_part
|
||
);
|
||
}
|
||
}
|
||
|
||
if (!$key_type_part || !$value_type_part) {
|
||
break;
|
||
}
|
||
|
||
if (!$key_type) {
|
||
$key_type = $key_type_part;
|
||
} else {
|
||
$key_type = Type::combineUnionTypes($key_type, $key_type_part);
|
||
}
|
||
|
||
if (!$value_type) {
|
||
$value_type = $value_type_part;
|
||
} else {
|
||
$value_type = Type::combineUnionTypes($value_type, $value_type_part);
|
||
}
|
||
}
|
||
}
|
||
} elseif ($codebase->classImplements(
|
||
$iterator_atomic_type->value,
|
||
'Iterator'
|
||
) ||
|
||
(
|
||
$codebase->interfaceExists($iterator_atomic_type->value)
|
||
&& $codebase->interfaceExtends(
|
||
$iterator_atomic_type->value,
|
||
'Iterator'
|
||
)
|
||
)
|
||
) {
|
||
$fake_method_call = new PhpParser\Node\Expr\MethodCall(
|
||
$foreach_expr,
|
||
new PhpParser\Node\Identifier('current', $foreach_expr->getAttributes())
|
||
);
|
||
|
||
$suppressed_issues = $statements_analyzer->getSuppressedIssues();
|
||
|
||
if (!in_array('PossiblyInvalidMethodCall', $suppressed_issues, true)) {
|
||
$statements_analyzer->addSuppressedIssues(['PossiblyInvalidMethodCall']);
|
||
}
|
||
|
||
\Psalm\Internal\Analyzer\Statements\Expression\Call\MethodCallAnalyzer::analyze(
|
||
$statements_analyzer,
|
||
$fake_method_call,
|
||
$context
|
||
);
|
||
|
||
if (!in_array('PossiblyInvalidMethodCall', $suppressed_issues, true)) {
|
||
$statements_analyzer->removeSuppressedIssues(['PossiblyInvalidMethodCall']);
|
||
}
|
||
|
||
$iterator_class_type = $fake_method_call->inferredType ?? null;
|
||
|
||
if ($iterator_class_type && !$iterator_class_type->isMixed()) {
|
||
if (!$value_type) {
|
||
$value_type = $iterator_class_type;
|
||
} else {
|
||
$value_type = Type::combineUnionTypes($value_type, $iterator_class_type);
|
||
}
|
||
}
|
||
}
|
||
|
||
if (!$key_type && !$value_type) {
|
||
self::getKeyValueParamsForTraversableObject(
|
||
$iterator_atomic_type,
|
||
$codebase,
|
||
$key_type,
|
||
$value_type
|
||
);
|
||
}
|
||
|
||
return;
|
||
}
|
||
|
||
if (!$codebase->classlikes->classOrInterfaceExists($iterator_atomic_type->value)) {
|
||
return;
|
||
}
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param ?Type\Union $key_type
|
||
* @param ?Type\Union $value_type
|
||
* @return void
|
||
*/
|
||
public static function getKeyValueParamsForTraversableObject(
|
||
Type\Atomic $iterator_atomic_type,
|
||
Codebase $codebase,
|
||
&$key_type,
|
||
&$value_type
|
||
) {
|
||
if ($iterator_atomic_type instanceof Type\Atomic\TIterable
|
||
|| ($iterator_atomic_type instanceof Type\Atomic\TGenericObject
|
||
&& strtolower($iterator_atomic_type->value) === 'traversable')
|
||
) {
|
||
$value_type_part = $iterator_atomic_type->type_params[1];
|
||
|
||
if (!$value_type) {
|
||
$value_type = $value_type_part;
|
||
} else {
|
||
$value_type = Type::combineUnionTypes($value_type, $value_type_part);
|
||
}
|
||
|
||
$key_type_part = $iterator_atomic_type->type_params[0];
|
||
|
||
if (!$key_type) {
|
||
$key_type = $key_type_part;
|
||
} else {
|
||
$key_type = Type::combineUnionTypes($key_type, $key_type_part);
|
||
}
|
||
return;
|
||
}
|
||
|
||
if ($iterator_atomic_type instanceof Type\Atomic\TNamedObject
|
||
&& $codebase->classImplements(
|
||
$iterator_atomic_type->value,
|
||
'Traversable'
|
||
)
|
||
) {
|
||
$generic_storage = $codebase->classlike_storage_provider->get(
|
||
$iterator_atomic_type->value
|
||
);
|
||
|
||
if (!isset($generic_storage->template_type_extends['traversable'])) {
|
||
return;
|
||
}
|
||
|
||
if ($generic_storage->template_types
|
||
|| $iterator_atomic_type instanceof Type\Atomic\TGenericObject
|
||
) {
|
||
// if we're just being passed the non-generic class itself, assume
|
||
// that it's inside the calling class
|
||
$passed_type_params = $iterator_atomic_type instanceof Type\Atomic\TGenericObject
|
||
? $iterator_atomic_type->type_params
|
||
: array_values(
|
||
array_map(
|
||
/** @param array{0:Type\Union} $arr */
|
||
function (array $arr) : Type\Union {
|
||
return $arr[0];
|
||
},
|
||
$generic_storage->template_types
|
||
)
|
||
);
|
||
} else {
|
||
$passed_type_params = null;
|
||
}
|
||
|
||
$key_type = self::getExtendedType(
|
||
'TKey',
|
||
'traversable',
|
||
strtolower($generic_storage->name),
|
||
$generic_storage->template_type_extends,
|
||
$generic_storage->template_types,
|
||
$passed_type_params
|
||
);
|
||
|
||
$value_type = self::getExtendedType(
|
||
'TValue',
|
||
'traversable',
|
||
strtolower($generic_storage->name),
|
||
$generic_storage->template_type_extends,
|
||
$generic_storage->template_types,
|
||
$passed_type_params
|
||
);
|
||
|
||
return;
|
||
}
|
||
}
|
||
|
||
/**
|
||
* @param string $template_name
|
||
* @param array<string, array<int|string, Type\Union>> $template_type_extends
|
||
* @param array<string, array{Type\Union, ?string}> $class_template_types
|
||
* @param array<int, Type\Union> $calling_type_params
|
||
* @return Type\Union|null
|
||
*/
|
||
private static function getExtendedType(
|
||
string $template_name,
|
||
string $template_class_lc,
|
||
string $calling_class_lc,
|
||
array $template_type_extends,
|
||
array $class_template_types = null,
|
||
array $calling_type_params = null
|
||
) {
|
||
if ($calling_class_lc === $template_class_lc) {
|
||
if (isset($class_template_types[$template_name]) && $calling_type_params) {
|
||
$offset = array_search($template_name, array_keys($class_template_types));
|
||
|
||
if ($offset !== false) {
|
||
return $calling_type_params[$offset];
|
||
}
|
||
}
|
||
|
||
return null;
|
||
}
|
||
|
||
if (isset($template_type_extends[$template_class_lc][$template_name])) {
|
||
$extended_type = $template_type_extends[$template_class_lc][$template_name];
|
||
|
||
$return_type = null;
|
||
|
||
foreach ($extended_type->getTypes() as $extended_atomic_type) {
|
||
if (!$extended_atomic_type instanceof Type\Atomic\TTemplateParam) {
|
||
if (!$return_type) {
|
||
$return_type = $extended_type;
|
||
} else {
|
||
$return_type = Type::combineUnionTypes(
|
||
$return_type,
|
||
$extended_type
|
||
);
|
||
}
|
||
|
||
continue;
|
||
}
|
||
|
||
if ($extended_atomic_type->defining_class) {
|
||
$candidate_type = self::getExtendedType(
|
||
$extended_atomic_type->param_name,
|
||
strtolower($extended_atomic_type->defining_class),
|
||
$calling_class_lc,
|
||
$template_type_extends,
|
||
$class_template_types,
|
||
$calling_type_params
|
||
);
|
||
|
||
if ($candidate_type) {
|
||
if (!$return_type) {
|
||
$return_type = $candidate_type;
|
||
} else {
|
||
$return_type = Type::combineUnionTypes(
|
||
$return_type,
|
||
$candidate_type
|
||
);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
if ($return_type) {
|
||
return $return_type;
|
||
}
|
||
}
|
||
|
||
return null;
|
||
}
|
||
}
|