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ArgumentAnalyzer.php
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ArgumentAnalyzer.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\Analyzer\ClassLikeAnalyzer;
use Psalm\Internal\Analyzer\ClassLikeNameOptions;
use Psalm\Internal\Analyzer\FunctionLikeAnalyzer;
use Psalm\Internal\Analyzer\MethodAnalyzer;
use Psalm\Internal\Analyzer\Statements\Block\ForeachAnalyzer;
use Psalm\Internal\Analyzer\Statements\Expression\CallAnalyzer;
use Psalm\Internal\Analyzer\Statements\Expression\CastAnalyzer;
use Psalm\Internal\Analyzer\Statements\Expression\ExpressionIdentifier;
use Psalm\Internal\Analyzer\StatementsAnalyzer;
use Psalm\Internal\Analyzer\TraitAnalyzer;
use Psalm\Internal\Codebase\ConstantTypeResolver;
use Psalm\Internal\Codebase\InternalCallMapHandler;
use Psalm\Internal\Codebase\TaintFlowGraph;
use Psalm\Internal\Codebase\VariableUseGraph;
use Psalm\Internal\DataFlow\DataFlowNode;
use Psalm\Internal\MethodIdentifier;
use Psalm\Internal\Type\Comparator\CallableTypeComparator;
use Psalm\Internal\Type\Comparator\TypeComparisonResult;
use Psalm\Internal\Type\Comparator\UnionTypeComparator;
use Psalm\Internal\Type\TemplateBound;
use Psalm\Internal\Type\TemplateResult;
use Psalm\Internal\Type\TemplateStandinTypeReplacer;
use Psalm\Internal\Type\TypeExpander;
use Psalm\Issue\ArgumentTypeCoercion;
use Psalm\Issue\ImplicitToStringCast;
use Psalm\Issue\InvalidArgument;
use Psalm\Issue\InvalidLiteralArgument;
use Psalm\Issue\InvalidScalarArgument;
use Psalm\Issue\MixedArgument;
use Psalm\Issue\MixedArgumentTypeCoercion;
use Psalm\Issue\NamedArgumentNotAllowed;
use Psalm\Issue\NoValue;
use Psalm\Issue\NullArgument;
use Psalm\Issue\PossiblyFalseArgument;
use Psalm\Issue\PossiblyInvalidArgument;
use Psalm\Issue\PossiblyNullArgument;
use Psalm\IssueBuffer;
use Psalm\Node\VirtualArg;
use Psalm\Plugin\EventHandler\Event\AddRemoveTaintsEvent;
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\TClassString;
use Psalm\Type\Atomic\TClassStringMap;
use Psalm\Type\Atomic\TGenericObject;
use Psalm\Type\Atomic\TIterable;
use Psalm\Type\Atomic\TKeyedArray;
use Psalm\Type\Atomic\TList;
use Psalm\Type\Atomic\TLiteralString;
use Psalm\Type\Atomic\TNamedObject;
use Psalm\Type\Union;
use function array_merge;
use function count;
use function explode;
use function in_array;
use function ord;
use function preg_split;
use function reset;
use function strpos;
use function strtolower;
use function substr;
use const PREG_SPLIT_NO_EMPTY;
/**
* @internal
*/
class ArgumentAnalyzer
{
/**
* @param array<string, array<string, Union>> $class_generic_params
* @return false|null
*/
public static function checkArgumentMatches(
StatementsAnalyzer $statements_analyzer,
?string $cased_method_id,
?MethodIdentifier $method_id,
?string $self_fq_class_name,
?string $static_fq_class_name,
CodeLocation $function_call_location,
?FunctionLikeParameter $function_param,
int $argument_offset,
int $unpacked_argument_offset,
bool $allow_named_args,
PhpParser\Node\Arg $arg,
?Union $arg_value_type,
Context $context,
array $class_generic_params,
?TemplateResult $template_result,
bool $specialize_taint,
bool $in_call_map
): ?bool {
$codebase = $statements_analyzer->getCodebase();
if (!$arg_value_type) {
if ($function_param && !$function_param->by_ref) {
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)
) {
$codebase->analyzer->incrementMixedCount($statements_analyzer->getFilePath());
}
$param_type = $function_param->type;
if ($function_param->is_variadic
&& $param_type
&& $param_type->hasArray()
) {
/**
* @psalm-suppress PossiblyUndefinedStringArrayOffset
* @var TList|TArray
*/
$array_type = $param_type->getAtomicTypes()['array'];
if ($array_type instanceof TList) {
$param_type = $array_type->type_param;
} else {
$param_type = $array_type->type_params[1];
}
}
if ($param_type && !$param_type->hasMixed()) {
IssueBuffer::maybeAdd(
new MixedArgument(
'Argument ' . ($argument_offset + 1) . ' of ' . $cased_method_id
. ' cannot be mixed, expecting ' . $param_type,
new CodeLocation($statements_analyzer->getSource(), $arg->value),
$cased_method_id
),
$statements_analyzer->getSuppressedIssues()
);
}
}
return null;
}
if (!$function_param) {
return null;
}
if ($function_param->expect_variable
&& $arg_value_type->isSingleStringLiteral()
&& !$arg->value instanceof PhpParser\Node\Scalar\MagicConst
&& !$arg->value instanceof PhpParser\Node\Expr\ConstFetch
&& !$arg->value instanceof PhpParser\Node\Expr\ClassConstFetch
) {
$values = preg_split('//u', $arg_value_type->getSingleStringLiteral()->value, -1, PREG_SPLIT_NO_EMPTY);
if ($values !== false) {
$prev_ord = 0;
$gt_count = 0;
foreach ($values as $value) {
$ord = ord($value);
if ($ord > $prev_ord) {
$gt_count++;
}
$prev_ord = $ord;
}
if (count($values) < 12 || ($gt_count / count($values)) < 0.8) {
IssueBuffer::maybeAdd(
new InvalidLiteralArgument(
'Argument ' . ($argument_offset + 1) . ' of ' . $cased_method_id
. ' expects a non-literal value, but ' . $arg_value_type->getId() . ' provided',
new CodeLocation($statements_analyzer->getSource(), $arg->value),
$cased_method_id
),
$statements_analyzer->getSuppressedIssues()
);
}
}
}
if (self::checkFunctionLikeTypeMatches(
$statements_analyzer,
$codebase,
$cased_method_id,
$method_id,
$self_fq_class_name,
$static_fq_class_name,
$function_call_location,
$function_param,
$allow_named_args,
$arg_value_type,
$argument_offset,
$unpacked_argument_offset,
$arg,
$context,
$class_generic_params,
$template_result,
$specialize_taint,
$in_call_map
) === false) {
return false;
}
return null;
}
/**
* @param array<string, array<string, Union>> $class_generic_params
* @return false|null
*/
private static function checkFunctionLikeTypeMatches(
StatementsAnalyzer $statements_analyzer,
Codebase $codebase,
?string $cased_method_id,
?MethodIdentifier $method_id,
?string $self_fq_class_name,
?string $static_fq_class_name,
CodeLocation $function_call_location,
FunctionLikeParameter $function_param,
bool $allow_named_args,
Union $arg_type,
int $argument_offset,
int $unpacked_argument_offset,
PhpParser\Node\Arg $arg,
Context $context,
?array $class_generic_params,
?TemplateResult $template_result,
bool $specialize_taint,
bool $in_call_map
): ?bool {
if (!$function_param->type) {
if (!$codebase->infer_types_from_usage && !$statements_analyzer->data_flow_graph) {
return null;
}
$param_type = Type::getMixed();
} else {
$param_type = clone $function_param->type;
}
$bindable_template_params = [];
if ($template_result) {
$bindable_template_params = $param_type->getTemplateTypes();
}
$parent_class = null;
$classlike_storage = null;
$static_classlike_storage = null;
if ($self_fq_class_name) {
$classlike_storage = $codebase->classlike_storage_provider->get($self_fq_class_name);
$parent_class = $classlike_storage->parent_class;
$static_classlike_storage = $classlike_storage;
if ($static_fq_class_name && $static_fq_class_name !== $self_fq_class_name) {
$static_classlike_storage = $codebase->classlike_storage_provider->get($static_fq_class_name);
}
}
$param_type = TypeExpander::expandUnion(
$codebase,
$param_type,
$classlike_storage->name ?? null,
$static_classlike_storage->name ?? null,
$parent_class,
true,
false,
$static_classlike_storage->final ?? false,
true
);
if ($class_generic_params) {
// here we're replacing the param types and arg types with the bound
// class template params.
//
// For example, if we're operating on a class Foo with params TKey and TValue,
// and we're calling a method "add(TKey $key, TValue $value)" on an instance
// of that class where we know that TKey is int and TValue is string, then we
// want to substitute the expected parameters so it's as if we were actually
// calling "add(int $key, string $value)"
$readonly_template_result = new TemplateResult($class_generic_params, []);
// This flag ensures that the template results will never be written to
// It also supercedes the `$add_lower_bounds` flag so that closure params
// don’t get overwritten
$readonly_template_result->readonly = true;
$arg_value_type = $statements_analyzer->node_data->getType($arg->value);
$param_type = TemplateStandinTypeReplacer::replace(
$param_type,
$readonly_template_result,
$codebase,
$statements_analyzer,
$arg_value_type,
$argument_offset,
$context->self,
$context->calling_function_id ?: $context->calling_method_id
);
$arg_type = TemplateStandinTypeReplacer::replace(
$arg_type,
$readonly_template_result,
$codebase,
$statements_analyzer,
$arg_value_type,
$argument_offset,
$context->self,
$context->calling_function_id ?: $context->calling_method_id
);
}
if ($template_result && $template_result->template_types) {
$arg_type_param = $arg_type;
if ($arg->unpack) {
$arg_type_param = null;
foreach ($arg_type->getAtomicTypes() as $arg_atomic_type) {
if ($arg_atomic_type instanceof TArray
|| $arg_atomic_type instanceof TList
|| $arg_atomic_type instanceof TKeyedArray
) {
if ($arg_atomic_type instanceof TKeyedArray) {
$arg_type_param = $arg_atomic_type->getGenericValueType();
} elseif ($arg_atomic_type instanceof TList) {
$arg_type_param = $arg_atomic_type->type_param;
} else {
$arg_type_param = $arg_atomic_type->type_params[1];
}
} elseif ($arg_atomic_type instanceof TIterable) {
$arg_type_param = $arg_atomic_type->type_params[1];
} elseif ($arg_atomic_type instanceof TNamedObject) {
ForeachAnalyzer::getKeyValueParamsForTraversableObject(
$arg_atomic_type,
$codebase,
$key_type,
$arg_type_param
);
}
}
if (!$arg_type_param) {
$arg_type_param = Type::getMixed();
$arg_type_param->parent_nodes = $arg_type->parent_nodes;
}
}
$param_type = TemplateStandinTypeReplacer::replace(
$param_type,
$template_result,
$codebase,
$statements_analyzer,
$arg_type_param,
$argument_offset,
!$statements_analyzer->isStatic()
&& (!$method_id || $method_id->method_name !== '__construct')
? $context->self
: null,
$context->calling_method_id ?: $context->calling_function_id
);
foreach ($bindable_template_params as $template_type) {
if (!isset(
$template_result->lower_bounds
[$template_type->param_name]
[$template_type->defining_class]
)) {
if (isset(
$template_result->upper_bounds
[$template_type->param_name]
[$template_type->defining_class]
)) {
$template_result->lower_bounds[$template_type->param_name][$template_type->defining_class] = [
new TemplateBound(
clone $template_result->upper_bounds
[$template_type->param_name]
[$template_type->defining_class]->type
)
];
} else {
$template_result->lower_bounds[$template_type->param_name][$template_type->defining_class] = [
new TemplateBound(
clone $template_type->as
)
];
}
}
}
$param_type = TypeExpander::expandUnion(
$codebase,
$param_type,
$classlike_storage->name ?? null,
$static_classlike_storage->name ?? null,
$parent_class,
true,
false,
$static_classlike_storage->final ?? false,
true
);
}
$fleshed_out_signature_type = $function_param->signature_type
? TypeExpander::expandUnion(
$codebase,
$function_param->signature_type,
$classlike_storage->name ?? null,
$static_classlike_storage->name ?? null,
$parent_class
)
: null;
$unpacked_atomic_array = null;
if ($arg->unpack) {
if ($arg_type->hasMixed()) {
if (!$context->collect_initializations
&& !$context->collect_mutations
&& $statements_analyzer->getFilePath() === $statements_analyzer->getRootFilePath()
&& (!(($parent_source = $statements_analyzer->getSource())
instanceof FunctionLikeAnalyzer)
|| !$parent_source->getSource() instanceof TraitAnalyzer)
) {
$codebase->analyzer->incrementMixedCount($statements_analyzer->getFilePath());
}
IssueBuffer::maybeAdd(
new MixedArgument(
'Argument ' . ($argument_offset + 1) . ' of ' . $cased_method_id
. ' cannot unpack ' . $arg_type->getId() . ', expecting iterable',
new CodeLocation($statements_analyzer->getSource(), $arg->value),
$cased_method_id
),
$statements_analyzer->getSuppressedIssues()
);
if ($cased_method_id) {
$arg_location = new CodeLocation($statements_analyzer->getSource(), $arg->value);
self::processTaintedness(
$statements_analyzer,
$cased_method_id,
$method_id,
$argument_offset,
$arg_location,
$function_call_location,
$function_param,
$arg_type,
$arg->value,
$context,
$specialize_taint
);
}
return null;
}
if ($arg_type->hasArray()) {
/**
* @psalm-suppress PossiblyUndefinedStringArrayOffset
* @var TArray|TList|TKeyedArray|TClassStringMap
*/
$unpacked_atomic_array = $arg_type->getAtomicTypes()['array'];
$arg_key_allowed = true;
if ($unpacked_atomic_array instanceof TKeyedArray) {
if (!$allow_named_args && !$unpacked_atomic_array->getGenericKeyType()->isInt()) {
$arg_key_allowed = false;
}
if ($function_param->is_variadic) {
$arg_type = $unpacked_atomic_array->getGenericValueType();
} elseif ($codebase->php_major_version >= 8
&& $allow_named_args
&& isset($unpacked_atomic_array->properties[$function_param->name])
) {
$arg_type = clone $unpacked_atomic_array->properties[$function_param->name];
} elseif ($unpacked_atomic_array->is_list
&& isset($unpacked_atomic_array->properties[$unpacked_argument_offset])
) {
$arg_type = clone $unpacked_atomic_array->properties[$unpacked_argument_offset];
} elseif ($function_param->is_optional && $function_param->default_type) {
if ($function_param->default_type instanceof Union) {
$arg_type = $function_param->default_type;
} else {
$arg_type_atomic = ConstantTypeResolver::resolve(
$codebase->classlikes,
$function_param->default_type,
$statements_analyzer
);
$arg_type = new Union([$arg_type_atomic]);
}
} else {
$arg_type = Type::getMixed();
}
} elseif ($unpacked_atomic_array instanceof TList) {
$arg_type = $unpacked_atomic_array->type_param;
} elseif ($unpacked_atomic_array instanceof TClassStringMap) {
$arg_type = Type::getMixed();
} else {
if (!$allow_named_args && !$unpacked_atomic_array->type_params[0]->isInt()) {
$arg_key_allowed = false;
}
$arg_type = $unpacked_atomic_array->type_params[1];
}
if (!$arg_key_allowed) {
IssueBuffer::maybeAdd(
new NamedArgumentNotAllowed(
'Method ' . $cased_method_id
. ' called with named unpacked array ' . $unpacked_atomic_array->getId()
. ' (array with string keys)',
new CodeLocation($statements_analyzer->getSource(), $arg->value),
$cased_method_id
),
$statements_analyzer->getSuppressedIssues()
);
}
} else {
$non_iterable = false;
$invalid_key = false;
$invalid_string_key = false;
$possibly_matches = false;
foreach ($arg_type->getAtomicTypes() as $atomic_type) {
if (!$atomic_type->isIterable($codebase)) {
$non_iterable = true;
} else {
$key_type = $codebase->getKeyValueParamsForTraversableObject($atomic_type)[0];
if (!UnionTypeComparator::isContainedBy(
$codebase,
$key_type,
Type::getArrayKey()
)) {
$invalid_key = true;
continue;
}
if (($codebase->php_major_version < 8 || !$allow_named_args) && !$key_type->isInt()) {
$invalid_string_key = true;
continue;
}
$possibly_matches = true;
}
}
$issue_type = $possibly_matches ? PossiblyInvalidArgument::class : InvalidArgument::class;
if ($non_iterable) {
IssueBuffer::maybeAdd(
new $issue_type(
'Tried to unpack non-iterable ' . $arg_type->getId(),
new CodeLocation($statements_analyzer->getSource(), $arg->value),
$cased_method_id
),
$statements_analyzer->getSuppressedIssues()
);
}
if ($invalid_key) {
IssueBuffer::maybeAdd(
new $issue_type(
'Method ' . $cased_method_id
. ' called with unpacked iterable ' . $arg_type->getId()
. ' with invalid key (must be '
. ($codebase->php_major_version < 8 ? 'int' : 'int|string') . ')',
new CodeLocation($statements_analyzer->getSource(), $arg->value),
$cased_method_id
),
$statements_analyzer->getSuppressedIssues()
);
}
if ($invalid_string_key) {
if ($codebase->php_major_version < 8) {
IssueBuffer::maybeAdd(
new $issue_type(
'String keys not supported in unpacked arguments',
new CodeLocation($statements_analyzer->getSource(), $arg->value),
$cased_method_id
),
$statements_analyzer->getSuppressedIssues()
);
} else {
IssueBuffer::maybeAdd(
new NamedArgumentNotAllowed(
'Method ' . $cased_method_id
. ' called with named unpacked iterable ' . $arg_type->getId()
. ' (iterable with string keys)',
new CodeLocation($statements_analyzer->getSource(), $arg->value),
$cased_method_id
),
$statements_analyzer->getSuppressedIssues()
);
}
}
return null;
}
} else {
if (!$allow_named_args && $arg->name !== null) {
IssueBuffer::maybeAdd(
new NamedArgumentNotAllowed(
'Method ' . $cased_method_id. ' called with named argument ' . $arg->name->name,
new CodeLocation($statements_analyzer->getSource(), $arg->value),
$cased_method_id
),
$statements_analyzer->getSuppressedIssues()
);
}
}
// bypass verifying argument types when collecting initialisations,
// because the argument locations are not reliable (file names normally differ)
// See https://github.com/vimeo/psalm/issues/5662
if ($arg instanceof VirtualArg
&& $context->collect_initializations
) {
return null;
}
if (self::verifyType(
$statements_analyzer,
$arg_type,
$param_type,
$fleshed_out_signature_type,
$cased_method_id,
$method_id,
$argument_offset,
new CodeLocation($statements_analyzer->getSource(), $arg->value),
$arg->value,
$context,
$function_param,
$arg->unpack,
$unpacked_atomic_array,
$specialize_taint,
$in_call_map,
$function_call_location
) === false) {
return false;
}
return null;
}
/**
* @param TKeyedArray|TArray|TList|TClassStringMap|null $unpacked_atomic_array
* @return null|false
* @psalm-suppress ComplexMethod
*/
public static function verifyType(
StatementsAnalyzer $statements_analyzer,
Union $input_type,
Union $param_type,
?Union $signature_param_type,
?string $cased_method_id,
?MethodIdentifier $method_id,
int $argument_offset,
CodeLocation $arg_location,
PhpParser\Node\Expr $input_expr,
Context $context,
FunctionLikeParameter $function_param,
bool $unpack,
?Atomic $unpacked_atomic_array,
bool $specialize_taint,
bool $in_call_map,
CodeLocation $function_call_location
): ?bool {
$codebase = $statements_analyzer->getCodebase();
if ($param_type->hasMixed()) {
if ($codebase->infer_types_from_usage
&& !$input_type->hasMixed()
&& !$param_type->from_docblock
&& !$param_type->had_template
&& $method_id
&& strpos($method_id->method_name, '__') !== 0
) {
$declaring_method_id = $codebase->methods->getDeclaringMethodId($method_id);
if ($declaring_method_id) {
$id_lc = strtolower((string) $declaring_method_id);
$codebase->analyzer->possible_method_param_types[$id_lc][$argument_offset]
= Type::combineUnionTypes(
$codebase->analyzer->possible_method_param_types[$id_lc][$argument_offset] ?? null,
clone $input_type,
$codebase
);
}
}
if ($cased_method_id) {
self::processTaintedness(
$statements_analyzer,
$cased_method_id,
$method_id,
$argument_offset,
$arg_location,
$function_call_location,
$function_param,
$input_type,
$input_expr,
$context,
$specialize_taint
);
}
return null;
}
$method_identifier = $cased_method_id ? ' of ' . $cased_method_id : '';
if ($input_type->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)
) {
$codebase->analyzer->incrementMixedCount($statements_analyzer->getFilePath());
}
$origin_locations = [];
if ($statements_analyzer->data_flow_graph instanceof VariableUseGraph) {
foreach ($input_type->parent_nodes as $parent_node) {
$origin_locations = array_merge(
$origin_locations,
$statements_analyzer->data_flow_graph->getOriginLocations($parent_node)
);
}
}
$origin_location = count($origin_locations) === 1 ? reset($origin_locations) : null;
if ($origin_location && $origin_location->getHash() === $arg_location->getHash()) {
$origin_location = null;
}
IssueBuffer::maybeAdd(
new MixedArgument(
'Argument ' . ($argument_offset + 1) . $method_identifier
. ' cannot be ' . $input_type->getId() . ', expecting ' .
$param_type,
$arg_location,
$cased_method_id,
$origin_location
),
$statements_analyzer->getSuppressedIssues()
);
if ($input_type->isMixed()) {
if (!$function_param->by_ref
&& !($function_param->is_variadic xor $unpack)
&& $cased_method_id !== 'echo'
&& $cased_method_id !== 'print'
&& (!$in_call_map || $context->strict_types)
) {
self::coerceValueAfterGatekeeperArgument(
$statements_analyzer,
$input_type,
false,
$input_expr,
$param_type,
$signature_param_type,
$context,
$unpack,
$unpacked_atomic_array
);
}
}
if ($cased_method_id) {
$input_type = self::processTaintedness(
$statements_analyzer,
$cased_method_id,
$method_id,
$argument_offset,
$arg_location,
$function_call_location,
$function_param,
$input_type,
$input_expr,
$context,
$specialize_taint
);
}
if ($input_type->isMixed()) {
return null;
}
}
if ($input_type->isNever()) {
IssueBuffer::maybeAdd(
new NoValue(
'This function or method call never returns output',
$arg_location
),
$statements_analyzer->getSuppressedIssues()
);
return null;
}
if (!$context->collect_initializations
&& !$context->collect_mutations
&& $statements_analyzer->getFilePath() === $statements_analyzer->getRootFilePath()
&& (!(($parent_source = $statements_analyzer->getSource())
instanceof FunctionLikeAnalyzer)
|| !$parent_source->getSource() instanceof TraitAnalyzer)
) {
$codebase->analyzer->incrementNonMixedCount($statements_analyzer->getFilePath());
}
if ($function_param->by_ref || $function_param->is_optional) {
//if the param is optional or a ref, we'll allow the input to be possibly_undefined
$param_type->possibly_undefined = true;
}
if ($param_type->hasCallableType() && $param_type->isSingle()) {
// we do this replacement early because later we don't have access to the
// $statements_analyzer, which is necessary to understand string function names
foreach ($input_type->getAtomicTypes() as $key => $atomic_type) {
if (!$atomic_type instanceof TLiteralString
|| InternalCallMapHandler::inCallMap($atomic_type->value)
) {
continue;
}
$candidate_callable = CallableTypeComparator::getCallableFromAtomic(
$codebase,
$atomic_type,
null,
$statements_analyzer,
true
);
if ($candidate_callable) {
$input_type->removeType($key);
$input_type->addType($candidate_callable);
}
}
}
$union_comparison_results = new TypeComparisonResult();
$type_match_found = UnionTypeComparator::isContainedBy(
$codebase,
$input_type,
$param_type,
true,
true,
$union_comparison_results
);
$replace_input_type = false;
if ($union_comparison_results->replacement_union_type) {
$replace_input_type = true;
$input_type = $union_comparison_results->replacement_union_type;
}
if ($cased_method_id) {
$old_input_type = $input_type;
$input_type = self::processTaintedness(
$statements_analyzer,
$cased_method_id,
$method_id,
$argument_offset,
$arg_location,
$function_call_location,
$function_param,
$input_type,
$input_expr,
$context,
$specialize_taint
);
if ($old_input_type !== $input_type) {
$replace_input_type = true;
}
}
if ($type_match_found
&& $param_type->hasCallableType()
) {
$potential_method_ids = [];
foreach ($input_type->getAtomicTypes() as $input_type_part) {
if ($input_type_part instanceof TKeyedArray) {
$potential_method_id = CallableTypeComparator::getCallableMethodIdFromTKeyedArray(
$input_type_part,
$codebase,
$context->calling_method_id,
$statements_analyzer->getFilePath()
);
if ($potential_method_id && $potential_method_id !== 'not-callable') {
$potential_method_ids[] = $potential_method_id;
}
} elseif ($input_type_part instanceof TLiteralString
&& strpos($input_type_part->value, '::')
) {
$parts = explode('::', $input_type_part->value);
$potential_method_ids[] = new MethodIdentifier(
$parts[0],
strtolower($parts[1])
);
}
}
foreach ($potential_method_ids as $potential_method_id) {
$codebase->methods->methodExists(
$potential_method_id,
$context->calling_method_id,
null,
$statements_analyzer,
$statements_analyzer->getFilePath(),
true,
$context->insideUse()
);
}
}
if ($context->strict_types
&& !$input_type->hasArray()
&& !$param_type->from_docblock
&& $cased_method_id !== 'echo'
&& $cased_method_id !== 'print'
&& $cased_method_id !== 'sprintf'
) {
$union_comparison_results->scalar_type_match_found = false;
if ($union_comparison_results->to_string_cast) {
$union_comparison_results->to_string_cast = false;
$type_match_found = false;
}
}
if ($union_comparison_results->type_coerced && !$input_type->hasMixed()) {
if ($union_comparison_results->type_coerced_from_mixed) {
$origin_locations = [];
if ($statements_analyzer->data_flow_graph instanceof VariableUseGraph) {
foreach ($input_type->parent_nodes as $parent_node) {
$origin_locations = array_merge(
$origin_locations,
$statements_analyzer->data_flow_graph->getOriginLocations($parent_node)
);
}
}
$origin_location = count($origin_locations) === 1 ? reset($origin_locations) : null;
if ($origin_location && $origin_location->getHash() === $arg_location->getHash()) {
$origin_location = null;
}
IssueBuffer::maybeAdd(
new MixedArgumentTypeCoercion(
'Argument ' . ($argument_offset + 1) . $method_identifier . ' expects ' . $param_type->getId() .
', but parent type ' . $input_type->getId() . ' provided',
$arg_location,
$cased_method_id,
$origin_location
),
$statements_analyzer->getSuppressedIssues()
);
} else {
IssueBuffer::maybeAdd(
new ArgumentTypeCoercion(
'Argument ' . ($argument_offset + 1) . $method_identifier . ' expects ' . $param_type->getId() .
', but parent type ' . $input_type->getId() . ' provided',
$arg_location,
$cased_method_id
),
$statements_analyzer->getSuppressedIssues()
);
}
}
if ($union_comparison_results->to_string_cast && $cased_method_id !== 'echo' && $cased_method_id !== 'print') {
IssueBuffer::maybeAdd(