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FunctionCallAnalyzer.php
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FunctionCallAnalyzer.php
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<?php
namespace Psalm\Internal\Analyzer\Statements\Expression\Call;
use PhpParser;
use Psalm\CodeLocation;
use Psalm\Codebase;
use Psalm\Context;
use Psalm\Internal\Algebra;
use Psalm\Internal\Algebra\FormulaGenerator;
use Psalm\Internal\Analyzer\AlgebraAnalyzer;
use Psalm\Internal\Analyzer\FunctionLikeAnalyzer;
use Psalm\Internal\Analyzer\Statements\Expression\Call\MethodCallAnalyzer;
use Psalm\Internal\Analyzer\Statements\Expression\CallAnalyzer;
use Psalm\Internal\Analyzer\Statements\ExpressionAnalyzer;
use Psalm\Internal\Analyzer\StatementsAnalyzer;
use Psalm\Internal\Analyzer\TraitAnalyzer;
use Psalm\Internal\Codebase\InternalCallMapHandler;
use Psalm\Internal\Codebase\TaintFlowGraph;
use Psalm\Internal\DataFlow\TaintSink;
use Psalm\Internal\MethodIdentifier;
use Psalm\Internal\Type\Comparator\CallableTypeComparator;
use Psalm\Internal\Type\TemplateResult;
use Psalm\Internal\Type\TypeCombiner;
use Psalm\Issue\DeprecatedFunction;
use Psalm\Issue\ImpureFunctionCall;
use Psalm\Issue\InvalidFunctionCall;
use Psalm\Issue\MixedFunctionCall;
use Psalm\Issue\NullFunctionCall;
use Psalm\Issue\PossiblyInvalidFunctionCall;
use Psalm\Issue\PossiblyNullFunctionCall;
use Psalm\Issue\UnusedFunctionCall;
use Psalm\IssueBuffer;
use Psalm\Node\Expr\VirtualFuncCall;
use Psalm\Node\Expr\VirtualMethodCall;
use Psalm\Node\Name\VirtualFullyQualified;
use Psalm\Node\VirtualArg;
use Psalm\Node\VirtualIdentifier;
use Psalm\Plugin\EventHandler\Event\AddRemoveTaintsEvent;
use Psalm\Plugin\EventHandler\Event\AfterEveryFunctionCallAnalysisEvent;
use Psalm\Storage\Assertion;
use Psalm\Storage\FunctionLikeParameter;
use Psalm\Type;
use Psalm\Type\Atomic;
use Psalm\Type\Atomic\TArray;
use Psalm\Type\Atomic\TCallable;
use Psalm\Type\Atomic\TCallableObject;
use Psalm\Type\Atomic\TCallableString;
use Psalm\Type\Atomic\TClosure;
use Psalm\Type\Atomic\TKeyedArray;
use Psalm\Type\Atomic\TList;
use Psalm\Type\Atomic\TLiteralString;
use Psalm\Type\Atomic\TMixed;
use Psalm\Type\Atomic\TNamedObject;
use Psalm\Type\Atomic\TNull;
use Psalm\Type\Atomic\TString;
use Psalm\Type\Atomic\TTemplateParam;
use Psalm\Type\Reconciler;
use Psalm\Type\TaintKind;
use Psalm\Type\Union;
use UnexpectedValueException;
use function array_map;
use function array_merge;
use function array_shift;
use function array_slice;
use function count;
use function explode;
use function implode;
use function in_array;
use function preg_replace;
use function reset;
use function spl_object_id;
use function strpos;
use function strtolower;
/**
* @internal
*/
class FunctionCallAnalyzer extends CallAnalyzer
{
public static function analyze(
StatementsAnalyzer $statements_analyzer,
PhpParser\Node\Expr\FuncCall $stmt,
Context $context
): bool {
$function_name = $stmt->name;
$codebase = $statements_analyzer->getCodebase();
$code_location = new CodeLocation($statements_analyzer->getSource(), $stmt);
$config = $codebase->config;
$real_stmt = $stmt;
if ($function_name instanceof PhpParser\Node\Name
&& !$stmt->isFirstClassCallable()
&& isset($stmt->getArgs()[0])
&& !$stmt->getArgs()[0]->unpack
) {
$original_function_id = implode('\\', $function_name->parts);
if ($original_function_id === 'call_user_func') {
$other_args = array_slice($stmt->getArgs(), 1);
$function_name = $stmt->getArgs()[0]->value;
$stmt = new VirtualFuncCall(
$function_name,
$other_args,
$stmt->getAttributes()
);
}
if ($original_function_id === 'call_user_func_array' && isset($stmt->getArgs()[1])) {
$function_name = $stmt->getArgs()[0]->value;
$stmt = new VirtualFuncCall(
$function_name,
[new VirtualArg($stmt->getArgs()[1]->value, false, true)],
$stmt->getAttributes()
);
}
}
if ($function_name instanceof PhpParser\Node\Expr) {
$function_call_info = self::getAnalyzeNamedExpression(
$statements_analyzer,
$stmt,
$real_stmt,
$function_name,
$context
);
if ($function_call_info->function_exists === false) {
return true;
}
if ($function_call_info->new_function_name) {
$function_name = $function_call_info->new_function_name;
}
} else {
$function_call_info = self::handleNamedFunction(
$statements_analyzer,
$stmt,
$function_name,
$context,
$code_location
);
if (!$function_call_info->function_exists) {
return true;
}
}
$is_first_class_callable = $stmt->isFirstClassCallable();
$set_inside_conditional = false;
if ($function_name instanceof PhpParser\Node\Name
&& $function_name->parts === ['assert']
&& !$context->inside_conditional
) {
$context->inside_conditional = true;
$set_inside_conditional = true;
}
if (!$is_first_class_callable) {
ArgumentsAnalyzer::analyze(
$statements_analyzer,
$stmt->getArgs(),
$function_call_info->function_params,
$function_call_info->function_id,
$function_call_info->allow_named_args,
$context
);
}
if ($set_inside_conditional) {
$context->inside_conditional = false;
}
$function_callable = null;
if (!$is_first_class_callable
&& $function_name instanceof PhpParser\Node\Name
&& $function_call_info->function_id
) {
if (!$function_call_info->is_stubbed && $function_call_info->in_call_map) {
$function_callable = InternalCallMapHandler::getCallableFromCallMapById(
$codebase,
$function_call_info->function_id,
$stmt->getArgs(),
$statements_analyzer->node_data
);
$function_call_info->function_params = $function_callable->params;
}
}
$template_result = new TemplateResult([], []);
// do this here to allow closure param checks
if (!$is_first_class_callable && $function_call_info->function_params !== null) {
ArgumentsAnalyzer::checkArgumentsMatch(
$statements_analyzer,
$stmt->getArgs(),
$function_call_info->function_id,
$function_call_info->function_params,
$function_call_info->function_storage,
null,
$template_result,
$code_location,
$context
);
}
CallAnalyzer::checkTemplateResult(
$statements_analyzer,
$template_result,
$code_location,
$function_call_info->function_id
);
if ($function_name instanceof PhpParser\Node\Name && $function_call_info->function_id) {
$stmt_type = FunctionCallReturnTypeFetcher::fetch(
$statements_analyzer,
$codebase,
$stmt,
$function_name,
$function_call_info->function_id,
$function_call_info->in_call_map,
$function_call_info->is_stubbed,
$function_call_info->function_storage,
$function_callable,
$template_result,
$context
);
$statements_analyzer->node_data->setType($real_stmt, $stmt_type);
if ($stmt_type->isNever()) {
$context->has_returned = true;
}
$event = new AfterEveryFunctionCallAnalysisEvent(
$stmt,
$function_call_info->function_id,
$context,
$statements_analyzer->getSource(),
$codebase
);
$config->eventDispatcher->dispatchAfterEveryFunctionCallAnalysis($event);
if ($is_first_class_callable) {
return true;
}
}
if ($is_first_class_callable) {
$type_provider = $statements_analyzer->getNodeTypeProvider();
$closure_types = [];
if ($input_type = $type_provider->getType($function_name)) {
foreach ($input_type->getAtomicTypes() as $atomic_type) {
$candidate_callable = CallableTypeComparator::getCallableFromAtomic(
$codebase,
$atomic_type,
null,
$statements_analyzer
);
if ($candidate_callable) {
$closure_types[] = new TClosure(
'Closure',
$candidate_callable->params,
$candidate_callable->return_type,
$candidate_callable->is_pure
);
}
}
}
if ($closure_types) {
$stmt_type = TypeCombiner::combine($closure_types, $codebase);
} else {
$stmt_type = Type::getClosure();
}
$statements_analyzer->node_data->setType($real_stmt, $stmt_type);
return true;
}
foreach ($function_call_info->defined_constants as $const_name => $const_type) {
$context->constants[$const_name] = clone $const_type;
$context->vars_in_scope[$const_name] = clone $const_type;
}
foreach ($function_call_info->global_variables as $var_id => $_) {
$context->vars_in_scope[$var_id] = Type::getMixed();
$context->vars_possibly_in_scope[$var_id] = true;
}
if ($function_name instanceof PhpParser\Node\Name
&& $function_name->parts === ['assert']
&& isset($stmt->getArgs()[0])
) {
self::processAssertFunctionEffects(
$statements_analyzer,
$codebase,
$stmt,
$stmt->getArgs()[0],
$context
);
}
if ($codebase->store_node_types
&& !$context->collect_initializations
&& !$context->collect_mutations
&& ($stmt_type = $statements_analyzer->node_data->getType($real_stmt))
) {
$codebase->analyzer->addNodeType(
$statements_analyzer->getFilePath(),
$stmt,
$stmt_type->getId()
);
}
self::checkFunctionCallPurity(
$statements_analyzer,
$codebase,
$stmt,
$function_name,
$function_call_info,
$context
);
if ($function_call_info->function_storage) {
$inferred_lower_bounds = $template_result->lower_bounds;
if ($function_call_info->function_storage->assertions && $function_name instanceof PhpParser\Node\Name) {
self::applyAssertionsToContext(
$function_name,
null,
$function_call_info->function_storage->assertions,
$stmt->getArgs(),
$inferred_lower_bounds,
$context,
$statements_analyzer
);
}
if ($function_call_info->function_storage->if_true_assertions) {
$statements_analyzer->node_data->setIfTrueAssertions(
$stmt,
array_map(
function (Assertion $assertion) use ($inferred_lower_bounds, $codebase): Assertion {
return $assertion->getUntemplatedCopy($inferred_lower_bounds ?: [], null, $codebase);
},
$function_call_info->function_storage->if_true_assertions
)
);
}
if ($function_call_info->function_storage->if_false_assertions) {
$statements_analyzer->node_data->setIfFalseAssertions(
$stmt,
array_map(
function (Assertion $assertion) use ($inferred_lower_bounds, $codebase): Assertion {
return $assertion->getUntemplatedCopy($inferred_lower_bounds ?: [], null, $codebase);
},
$function_call_info->function_storage->if_false_assertions
)
);
}
if ($function_call_info->function_storage->deprecated && $function_call_info->function_id) {
IssueBuffer::maybeAdd(
new DeprecatedFunction(
'The function ' . $function_call_info->function_id . ' has been marked as deprecated',
$code_location,
$function_call_info->function_id
),
$statements_analyzer->getSuppressedIssues()
);
}
}
if ($function_call_info->byref_uses) {
foreach ($function_call_info->byref_uses as $byref_use_var => $_) {
$context->vars_in_scope['$' . $byref_use_var] = Type::getMixed();
$context->vars_possibly_in_scope['$' . $byref_use_var] = true;
}
}
if ($function_name instanceof PhpParser\Node\Name && $function_call_info->function_id) {
NamedFunctionCallHandler::handle(
$statements_analyzer,
$codebase,
$stmt,
$real_stmt,
$function_name,
strtolower($function_call_info->function_id),
$context
);
}
if (!$statements_analyzer->node_data->getType($real_stmt)) {
$statements_analyzer->node_data->setType($real_stmt, Type::getMixed());
}
return true;
}
private static function handleNamedFunction(
StatementsAnalyzer $statements_analyzer,
PhpParser\Node\Expr\FuncCall $stmt,
PhpParser\Node\Name $function_name,
Context $context,
CodeLocation $code_location
): FunctionCallInfo {
$function_call_info = new FunctionCallInfo();
$codebase = $statements_analyzer->getCodebase();
$codebase_functions = $codebase->functions;
$original_function_id = implode('\\', $function_name->parts);
if (!$function_name instanceof PhpParser\Node\Name\FullyQualified) {
$function_call_info->function_id = $codebase_functions->getFullyQualifiedFunctionNameFromString(
$original_function_id,
$statements_analyzer
);
} else {
$function_call_info->function_id = $original_function_id;
}
$namespaced_function_exists = $codebase_functions->functionExists(
$statements_analyzer,
strtolower($function_call_info->function_id)
);
if (!$namespaced_function_exists
&& !$function_name instanceof PhpParser\Node\Name\FullyQualified
) {
$function_call_info->in_call_map = InternalCallMapHandler::inCallMap($original_function_id);
$function_call_info->is_stubbed = $codebase_functions->hasStubbedFunction($original_function_id);
if ($function_call_info->is_stubbed || $function_call_info->in_call_map) {
$function_call_info->function_id = $original_function_id;
}
} else {
$function_call_info->in_call_map = InternalCallMapHandler::inCallMap($function_call_info->function_id);
$function_call_info->is_stubbed = $codebase_functions->hasStubbedFunction($function_call_info->function_id);
}
$function_call_info->function_exists
= $function_call_info->is_stubbed || $function_call_info->in_call_map || $namespaced_function_exists;
if ($function_call_info->function_exists
&& $codebase->store_node_types
&& !$context->collect_initializations
&& !$context->collect_mutations
) {
ArgumentMapPopulator::recordArgumentPositions(
$statements_analyzer,
$stmt,
$codebase,
$function_call_info->function_id
);
}
$is_predefined = true;
$is_maybe_root_function = !$function_name instanceof PhpParser\Node\Name\FullyQualified
&& count($function_name->parts) === 1;
if (!$function_call_info->in_call_map) {
$predefined_functions = $codebase->config->getPredefinedFunctions();
$is_predefined = isset($predefined_functions[strtolower($original_function_id)])
|| isset($predefined_functions[strtolower($function_call_info->function_id)]);
if ($context->check_functions) {
if (self::checkFunctionExists(
$statements_analyzer,
$function_call_info->function_id,
$code_location,
$is_maybe_root_function
) === false
) {
if (ArgumentsAnalyzer::analyze(
$statements_analyzer,
$stmt->getArgs(),
null,
null,
true,
$context
) === false) {
// fall through
}
return $function_call_info;
}
$function_call_info->function_exists = true;
}
} else {
$function_call_info->function_exists = true;
}
$function_call_info->function_params = null;
$function_call_info->defined_constants = [];
$function_call_info->global_variables = [];
$args = $stmt->isFirstClassCallable() ? [] : $stmt->getArgs();
if ($function_call_info->function_exists) {
if ($codebase->functions->params_provider->has($function_call_info->function_id)) {
$function_call_info->function_params = $codebase->functions->params_provider->getFunctionParams(
$statements_analyzer,
$function_call_info->function_id,
$args,
null,
$code_location
);
}
if ($function_call_info->function_params === null) {
if (!$function_call_info->in_call_map || $function_call_info->is_stubbed) {
try {
$function_call_info->function_storage = $function_storage = $codebase_functions->getStorage(
$statements_analyzer,
strtolower($function_call_info->function_id)
);
$function_call_info->function_params = $function_call_info->function_storage->params;
if (!$function_storage->allow_named_arg_calls) {
$function_call_info->allow_named_args = false;
}
if (!$is_predefined) {
$function_call_info->defined_constants = $function_storage->defined_constants;
$function_call_info->global_variables = $function_storage->global_variables;
}
} catch (UnexpectedValueException $e) {
$function_call_info->function_params = [
new FunctionLikeParameter('args', false, null, null, null, false, false, true)
];
}
} else {
$function_callable = InternalCallMapHandler::getCallableFromCallMapById(
$codebase,
$function_call_info->function_id,
$args,
$statements_analyzer->node_data
);
$function_call_info->function_params = $function_callable->params;
}
}
if ($codebase->store_node_types
&& !$context->collect_initializations
&& !$context->collect_mutations
) {
$codebase->analyzer->addNodeReference(
$statements_analyzer->getFilePath(),
$function_name,
$function_call_info->function_id . '()'
);
}
}
return $function_call_info;
}
private static function getAnalyzeNamedExpression(
StatementsAnalyzer $statements_analyzer,
PhpParser\Node\Expr\FuncCall $stmt,
PhpParser\Node\Expr\FuncCall $real_stmt,
PhpParser\Node\Expr $function_name,
Context $context
): FunctionCallInfo {
$function_call_info = new FunctionCallInfo();
$codebase = $statements_analyzer->getCodebase();
$was_in_call = $context->inside_call;
$context->inside_call = true;
if (ExpressionAnalyzer::analyze($statements_analyzer, $function_name, $context) === false) {
$context->inside_call = $was_in_call;
return $function_call_info;
}
$context->inside_call = $was_in_call;
$function_call_info->byref_uses = [];
if ($stmt_name_type = $statements_analyzer->node_data->getType($function_name)) {
if ($stmt_name_type->isNull()) {
IssueBuffer::maybeAdd(
new NullFunctionCall(
'Cannot call function on null value',
new CodeLocation($statements_analyzer->getSource(), $stmt)
),
$statements_analyzer->getSuppressedIssues()
);
return $function_call_info;
}
if ($stmt_name_type->isNullable()) {
IssueBuffer::maybeAdd(
new PossiblyNullFunctionCall(
'Cannot call function on possibly null value',
new CodeLocation($statements_analyzer->getSource(), $stmt)
),
$statements_analyzer->getSuppressedIssues()
);
}
$invalid_function_call_types = [];
$has_valid_function_call_type = false;
$var_atomic_types = $stmt_name_type->getAtomicTypes();
while ($var_atomic_types) {
$var_type_part = array_shift($var_atomic_types);
if ($var_type_part instanceof TTemplateParam) {
$var_atomic_types = array_merge($var_atomic_types, $var_type_part->as->getAtomicTypes());
continue;
}
if ($var_type_part instanceof TClosure || $var_type_part instanceof TCallable) {
if (!$var_type_part->is_pure && $context->pure) {
IssueBuffer::maybeAdd(
new ImpureFunctionCall(
'Cannot call an impure function from a mutation-free context',
new CodeLocation($statements_analyzer->getSource(), $stmt)
),
$statements_analyzer->getSuppressedIssues()
);
}
$function_call_info->function_params = $var_type_part->params;
if (($stmt_type = $statements_analyzer->node_data->getType($real_stmt))
&& $var_type_part->return_type
) {
$statements_analyzer->node_data->setType(
$real_stmt,
Type::combineUnionTypes(
$stmt_type,
$var_type_part->return_type
)
);
} else {
$statements_analyzer->node_data->setType(
$real_stmt,
$var_type_part->return_type ?? Type::getMixed()
);
}
if ($var_type_part instanceof TClosure) {
$function_call_info->byref_uses += $var_type_part->byref_uses;
}
$function_call_info->function_exists = true;
$has_valid_function_call_type = true;
} elseif ($var_type_part instanceof TMixed) {
$has_valid_function_call_type = true;
IssueBuffer::maybeAdd(
new MixedFunctionCall(
'Cannot call function on ' . $var_type_part->getId(),
new CodeLocation($statements_analyzer->getSource(), $stmt)
),
$statements_analyzer->getSuppressedIssues()
);
} elseif ($var_type_part instanceof TCallableObject
|| $var_type_part instanceof TCallableString
) {
// this is fine
$has_valid_function_call_type = true;
} elseif (($var_type_part instanceof TNamedObject && $var_type_part->value === 'Closure')) {
// this is fine
$has_valid_function_call_type = true;
} elseif ($var_type_part instanceof TString
|| $var_type_part instanceof TArray
|| $var_type_part instanceof TList
|| ($var_type_part instanceof TKeyedArray
&& count($var_type_part->properties) === 2)
) {
$potential_method_id = null;
if ($var_type_part instanceof TKeyedArray) {
$potential_method_id = CallableTypeComparator::getCallableMethodIdFromTKeyedArray(
$var_type_part,
$codebase,
$context->calling_method_id,
$statements_analyzer->getFilePath()
);
if ($potential_method_id === 'not-callable') {
$potential_method_id = null;
}
} elseif ($var_type_part instanceof TLiteralString) {
if (!$var_type_part->value) {
$invalid_function_call_types[] = '\'\'';
continue;
}
if (strpos($var_type_part->value, '::')) {
$parts = explode('::', strtolower($var_type_part->value));
$fq_class_name = $parts[0];
$fq_class_name = preg_replace('/^\\\\/', '', $fq_class_name);
$potential_method_id = new MethodIdentifier($fq_class_name, $parts[1]);
} else {
$function_call_info->new_function_name = new VirtualFullyQualified(
$var_type_part->value,
$function_name->getAttributes()
);
}
}
if ($potential_method_id) {
$codebase->methods->methodExists(
$potential_method_id,
$context->calling_method_id,
null,
$statements_analyzer,
$statements_analyzer->getFilePath()
);
}
// this is also kind of fine
$has_valid_function_call_type = true;
} elseif ($var_type_part instanceof TNull) {
// handled above
} elseif (!$var_type_part instanceof TNamedObject
|| !$codebase->classlikes->classOrInterfaceExists($var_type_part->value)
|| !$codebase->methods->methodExists(
new MethodIdentifier(
$var_type_part->value,
'__invoke'
)
)
) {
$invalid_function_call_types[] = (string)$var_type_part;
} else {
self::analyzeInvokeCall(
$statements_analyzer,
$stmt,
$real_stmt,
$function_name,
$context,
$var_type_part
);
}
}
if ($invalid_function_call_types) {
$var_type_part = reset($invalid_function_call_types);
if ($has_valid_function_call_type) {
IssueBuffer::maybeAdd(
new PossiblyInvalidFunctionCall(
'Cannot treat type ' . $var_type_part . ' as callable',
new CodeLocation($statements_analyzer->getSource(), $stmt)
),
$statements_analyzer->getSuppressedIssues()
);
} else {
IssueBuffer::maybeAdd(
new InvalidFunctionCall(
'Cannot treat type ' . $var_type_part . ' as callable',
new CodeLocation($statements_analyzer->getSource(), $stmt)
),
$statements_analyzer->getSuppressedIssues()
);
}
return $function_call_info;
}
if ($statements_analyzer->data_flow_graph instanceof TaintFlowGraph
&& $stmt_name_type->parent_nodes
&& $stmt_name_type->hasString()
&& !in_array('TaintedInput', $statements_analyzer->getSuppressedIssues())
) {
$arg_location = new CodeLocation($statements_analyzer->getSource(), $function_name);
$custom_call_sink = TaintSink::getForMethodArgument(
'variable-call',
'variable-call',
0,
$arg_location,
$arg_location
);
$custom_call_sink->taints = [TaintKind::INPUT_CALLABLE];
$statements_analyzer->data_flow_graph->addSink($custom_call_sink);
$event = new AddRemoveTaintsEvent($stmt, $context, $statements_analyzer, $codebase);
$added_taints = $codebase->config->eventDispatcher->dispatchAddTaints($event);
$removed_taints = $codebase->config->eventDispatcher->dispatchRemoveTaints($event);
foreach ($stmt_name_type->parent_nodes as $parent_node) {
$statements_analyzer->data_flow_graph->addPath(
$parent_node,
$custom_call_sink,
'call',
$added_taints,
$removed_taints
);
}
}
}
if (!$statements_analyzer->node_data->getType($real_stmt)) {
$statements_analyzer->node_data->setType($real_stmt, Type::getMixed());
}
return $function_call_info;
}
private static function analyzeInvokeCall(
StatementsAnalyzer $statements_analyzer,
PhpParser\Node\Expr\FuncCall $stmt,
PhpParser\Node\Expr\FuncCall $real_stmt,
PhpParser\Node\Expr $function_name,
Context $context,
Atomic $atomic_type
): void {
$old_data_provider = $statements_analyzer->node_data;
$statements_analyzer->node_data = clone $statements_analyzer->node_data;
$fake_method_call = new VirtualMethodCall(
$function_name,
new VirtualIdentifier('__invoke', $function_name->getAttributes()),
$stmt->args
);
$suppressed_issues = $statements_analyzer->getSuppressedIssues();
if (!in_array('InternalMethod', $suppressed_issues, true)) {
$statements_analyzer->addSuppressedIssues(['InternalMethod']);
}
$statements_analyzer->node_data->setType($function_name, new Union([$atomic_type]));
MethodCallAnalyzer::analyze(
$statements_analyzer,
$fake_method_call,
$context,
false
);
if (!in_array('InternalMethod', $suppressed_issues, true)) {
$statements_analyzer->removeSuppressedIssues(['InternalMethod']);
}
$fake_method_call_type = $statements_analyzer->node_data->getType($fake_method_call);
$statements_analyzer->node_data = $old_data_provider;
if ($stmt_type = $statements_analyzer->node_data->getType($real_stmt)) {
$statements_analyzer->node_data->setType(
$real_stmt,
Type::combineUnionTypes(
$fake_method_call_type ?? Type::getMixed(),
$stmt_type
)
);
} else {
$statements_analyzer->node_data->setType(
$real_stmt,
$fake_method_call_type ?? Type::getMixed()
);
}
}
private static function processAssertFunctionEffects(
StatementsAnalyzer $statements_analyzer,
Codebase $codebase,
PhpParser\Node\Expr\FuncCall $stmt,
PhpParser\Node\Arg $first_arg,
Context $context
): void {
$first_arg_value_id = spl_object_id($first_arg->value);
$assert_clauses = FormulaGenerator::getFormula(
$first_arg_value_id,
$first_arg_value_id,
$first_arg->value,
$context->self,
$statements_analyzer,
$codebase
);
AlgebraAnalyzer::checkForParadox(
$context->clauses,
$assert_clauses,
$statements_analyzer,
$stmt,
[]
);
$simplified_clauses = Algebra::simplifyCNF(array_merge($context->clauses, $assert_clauses));
$assert_type_assertions = Algebra::getTruthsFromFormula($simplified_clauses);
$changed_var_ids = [];
if ($assert_type_assertions) {
// while in an and, we allow scope to boil over to support
// statements of the form if ($x && $x->foo())
$op_vars_in_scope = Reconciler::reconcileKeyedTypes(
$assert_type_assertions,
$assert_type_assertions,
$context->vars_in_scope,
$changed_var_ids,
array_map(
function ($_): bool {
return true;
},
$assert_type_assertions
),
$statements_analyzer,
$statements_analyzer->getTemplateTypeMap() ?: [],
$context->inside_loop,
new CodeLocation($statements_analyzer->getSource(), $stmt)
);
foreach ($changed_var_ids as $var_id => $_) {
$first_appearance = $statements_analyzer->getFirstAppearance($var_id);
if ($first_appearance
&& isset($context->vars_in_scope[$var_id])
&& $context->vars_in_scope[$var_id]->hasMixed()
) {
if (!$context->collect_initializations
&& !$context->collect_mutations
&& $statements_analyzer->getFilePath() === $statements_analyzer->getRootFilePath()
&& (!(($parent_source = $statements_analyzer->getSource())
instanceof FunctionLikeAnalyzer)
|| !$parent_source->getSource() instanceof TraitAnalyzer)
) {
$codebase->analyzer->decrementMixedCount($statements_analyzer->getFilePath());
}
IssueBuffer::remove(
$statements_analyzer->getFilePath(),
'MixedAssignment',
$first_appearance->raw_file_start
);
}
if (isset($op_vars_in_scope[$var_id])) {
$op_vars_in_scope[$var_id]->from_docblock = true;
}
}
$context->vars_in_scope = $op_vars_in_scope;
}
if ($changed_var_ids) {
$simplified_clauses = Context::removeReconciledClauses($simplified_clauses, $changed_var_ids)[0];
}
$context->clauses = $simplified_clauses;
}
private static function checkFunctionCallPurity(
StatementsAnalyzer $statements_analyzer,
Codebase $codebase,
PhpParser\Node\Expr\FuncCall $stmt,
PhpParser\Node $function_name,
FunctionCallInfo $function_call_info,
Context $context
): void {
$config = $codebase->config;
if (!$context->collect_initializations
&& !$context->collect_mutations
&& ($context->mutation_free
|| $context->external_mutation_free
|| $codebase->find_unused_variables
|| !$config->remember_property_assignments_after_call
|| ($statements_analyzer->getSource() instanceof FunctionLikeAnalyzer
&& $statements_analyzer->getSource()->track_mutations))
) {
$must_use = true;