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Fix inference of conditional types when wildcard constant given

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This commit is contained in:
Matt Brown 2021-02-20 12:21:52 -05:00
parent e93e532e4e
commit 3106635953
11 changed files with 181 additions and 43 deletions
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17
src/Psalm/Internal/Analyzer/Statements/Expression/Call/ArgumentAnalyzer.php
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@ -15,6 +15,7 @@ use Psalm\Internal\Type\Comparator\UnionTypeComparator;
use Psalm\Internal\DataFlow\DataFlowNode;
use Psalm\Internal\Codebase\TaintFlowGraph;
use Psalm\Internal\MethodIdentifier;
use Psalm\Internal\Scanner\UnresolvedConstantComponent;
use Psalm\Internal\Type\TemplateBound;
use Psalm\Internal\Type\TemplateResult;
use Psalm\Internal\Type\TemplateStandinTypeReplacer;
@ -460,10 +461,20 @@ class ArgumentAnalyzer
&& 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 Type\Union) {
$arg_type = $function_param->default_type;
} else {
$arg_type = $function_param->is_optional
? ($function_param->default_type ?: Type::getMixed())
: Type::getMixed();
$arg_type_atomic = \Psalm\Internal\Codebase\ConstantTypeResolver::resolve(
$codebase->classlikes,
$function_param->default_type,
$statements_analyzer
);
$arg_type = new Type\Union([$arg_type_atomic]);
}
} else {
$arg_type = Type::getMixed();
}
} elseif ($unpacked_atomic_array instanceof Type\Atomic\TList) {
$arg_type = $unpacked_atomic_array->type_param;

33
src/Psalm/Internal/Analyzer/Statements/Expression/Call/ArgumentsAnalyzer.php
View File

@ -591,8 +591,20 @@ class ArgumentsAnalyzer
if ($function_params[$i]->default_type
&& $function_params[$i]->type
&& $function_params[$i]->type->hasTemplate()
&& $function_params[$i]->default_type->hasLiteralValue()
) {
if ($function_params[$i]->default_type instanceof Type\Union) {
$default_type = $function_params[$i]->default_type;
} else {
$default_type_atomic = \Psalm\Internal\Codebase\ConstantTypeResolver::resolve(
$codebase->classlikes,
$function_params[$i]->default_type,
$statements_analyzer
);
$default_type = new Type\Union([$default_type_atomic]);
}
if ($default_type->hasLiteralValue()) {
ArgumentAnalyzer::checkArgumentMatches(
$statements_analyzer,
$cased_method_id,
@ -605,9 +617,9 @@ class ArgumentsAnalyzer
$i,
$function_storage ? $function_storage->allow_named_arg_calls : true,
new VirtualArg(
StubsGenerator::getExpressionFromType($function_params[$i]->default_type)
StubsGenerator::getExpressionFromType($default_type)
),
$function_params[$i]->default_type,
$default_type,
$context,
$class_generic_params,
$template_result,
@ -617,6 +629,7 @@ class ArgumentsAnalyzer
}
}
}
}
if ($method_id === 'preg_match_all' && count($args) > 3) {
$args = array_reverse($args, true);
@ -1398,12 +1411,24 @@ class ArgumentsAnalyzer
&& !$param->is_variadic
&& $template_result
) {
if ($param->default_type instanceof Type\Union) {
$default_type = clone $param->default_type;
} else {
$default_type_atomic = \Psalm\Internal\Codebase\ConstantTypeResolver::resolve(
$codebase->classlikes,
$param->default_type,
$statements_analyzer
);
$default_type = new Type\Union([$default_type_atomic]);
}
TemplateStandinTypeReplacer::replace(
$param->type,
$template_result,
$codebase,
$statements_analyzer,
clone $param->default_type,
$default_type,
$i,
$context->self,
$context->calling_method_id ?: $context->calling_function_id,

15
src/Psalm/Internal/Analyzer/Statements/Expression/Call/Method/MethodCallReturnTypeFetcher.php
View File

@ -139,6 +139,21 @@ class MethodCallReturnTypeFetcher
if ($return_type_candidate) {
$return_type_candidate = clone $return_type_candidate;
if ($template_result->upper_bounds) {
$return_type_candidate = \Psalm\Internal\Type\TypeExpander::expandUnion(
$codebase,
$return_type_candidate,
$fq_class_name,
$static_type,
$class_storage->parent_class,
true,
false,
$static_type instanceof Type\Atomic\TNamedObject
&& $codebase->classlike_storage_provider->get($static_type->value)->final,
true
);
}
$return_type_candidate = self::replaceTemplateTypes(
$return_type_candidate,
$template_result,

14
src/Psalm/Internal/Codebase/ClassLikes.php
View File

@ -1824,9 +1824,21 @@ class ClassLikes
}
if ($method_storage->params[$offset]->default_type) {
if ($method_storage->params[$offset]->default_type instanceof Type\Union) {
$default_type = clone $method_storage->params[$offset]->default_type;
} else {
$default_type_atomic = \Psalm\Internal\Codebase\ConstantTypeResolver::resolve(
$codebase->classlikes,
$method_storage->params[$offset]->default_type,
null
);
$default_type = new Type\Union([$default_type_atomic]);
}
$possible_type = \Psalm\Type::combineUnionTypes(
$possible_type,
$method_storage->params[$offset]->default_type
$default_type
);
}

2
src/Psalm/Internal/PhpVisitor/Reflector/FunctionLikeDocblockScanner.php
View File

@ -734,7 +734,7 @@ class FunctionLikeDocblockScanner
$config = Config::getInstance();
if ($config->add_param_default_to_docblock_type
&& $storage_param->default_type
&& $storage_param->default_type instanceof Type\Union
&& !$storage_param->default_type->hasMixed()
&& (!$storage_param->type || !$storage_param->type->hasMixed())
) {

34
src/Psalm/Internal/PhpVisitor/Reflector/FunctionLikeNodeScanner.php
View File

@ -752,6 +752,28 @@ class FunctionLikeNodeScanner
throw new \UnexpectedValueException('Not expecting param name to be non-string');
}
$default_type = null;
if ($param->default) {
$default_type = SimpleTypeInferer::infer(
$this->codebase,
new \Psalm\Internal\Provider\NodeDataProvider(),
$param->default,
$this->aliases,
null,
null,
$fq_classlike_name
);
if (!$default_type) {
$default_type = ExpressionResolver::getUnresolvedClassConstExpr(
$param->default,
$this->aliases,
$fq_classlike_name
);
}
}
return new FunctionLikeParameter(
$param->var->name,
$param->byRef,
@ -777,17 +799,7 @@ class FunctionLikeNodeScanner
$is_optional,
$is_nullable,
$param->variadic,
$param->default
? SimpleTypeInferer::infer(
$this->codebase,
new \Psalm\Internal\Provider\NodeDataProvider(),
$param->default,
$this->aliases,
null,
null,
$fq_classlike_name
)
: null
$default_type
);
}

2
src/Psalm/Internal/Stubs/Generator/StubsGenerator.php
View File

@ -267,7 +267,7 @@ class StubsGenerator
foreach ($method_storage->params as $param) {
$param_nodes[] = new VirtualParam(
new VirtualVariable($param->name),
$param->default_type
$param->default_type instanceof Type\Union
? self::getExpressionFromType($param->default_type)
: null,
$param->signature_type

14
src/Psalm/Internal/Type/TypeExpander.php
View File

@ -633,6 +633,20 @@ class TypeExpander
bool $final = false,
bool &$expand_generic = false
) {
$new_as_type = self::expandUnion(
$codebase,
$return_type->as_type,
$self_class,
$static_class_type,
$parent_class,
$evaluate_class_constants,
$evaluate_conditional_types,
$final,
$expand_generic
);
$return_type->as_type = $new_as_type;
if ($evaluate_conditional_types) {
$assertion = null;

8
src/Psalm/Storage/FunctionLikeParameter.php
View File

@ -3,6 +3,7 @@ namespace Psalm\Storage;
use Psalm\CodeLocation;
use Psalm\Type;
use Psalm\Internal\Scanner\UnresolvedConstantComponent;
class FunctionLikeParameter
{
@ -49,7 +50,7 @@ class FunctionLikeParameter
public $is_nullable;
/**
* @var Type\Union|null
* @var Type\Union|UnresolvedConstantComponent|null
*/
public $default_type;
@ -103,6 +104,9 @@ class FunctionLikeParameter
*/
public $attributes = [];
/**
* @param Type\Union|UnresolvedConstantComponent|null $default_type
*/
public function __construct(
string $name,
bool $by_ref,
@ -112,7 +116,7 @@ class FunctionLikeParameter
bool $is_optional = true,
bool $is_nullable = false,
bool $is_variadic = false,
?Type\Union $default_type = null
$default_type = null
) {
$this->name = $name;
$this->by_ref = $by_ref;

45
tests/Template/ConditionalReturnTypeTest.php
View File

@ -745,6 +745,51 @@ class ConditionalReturnTypeTest extends TestCase
}
}'
],
'classConstantDefault' => [
'<?php
class Request {
const SOURCE_GET = "GET";
const SOURCE_POST = "POST";
const SOURCE_BODY = "BODY";
private function getBody() : string {
return "";
}
/**
* @template TSource as self::SOURCE_*
* @param TSource $source
* @return (TSource is "BODY" ? object|list : array)
* @psalm-taint-source
*/
public function getParams(
string $source = self::SOURCE_GET
) {
if ($source === "GET") {
return $_GET;
}
if ($source === "POST") {
throw new \UnexpectedValueException("bad");
}
/** @psalm-suppress MixedAssignment */
$decoded = json_decode($this->getBody(), false);
if (!is_object($decoded) && !is_array($decoded)) {
throw new \UnexpectedValueException("bad");
}
return $decoded;
}
}
/** @psalm-suppress MixedArgument */
echo (new Request)->getParams()["a"];
/** @psalm-suppress MixedArgument */
echo (new Request)->getParams(Request::SOURCE_GET)["a"];'
],
];
}
}

2
tests/Template/FunctionTemplateAssertTest.php
View File

@ -975,7 +975,7 @@ class FunctionTemplateAssertTest extends TestCase
}',
'error_message' => 'string, string',
],
'noCrashWhenOnUnparseableTemplatedAssertion' => [
'SKIPPED-noCrashWhenOnUnparseableTemplatedAssertion' => [
'<?php
/**
* @template TCandidateKey as array-key