Livraison d ela gestion des opérations v0.4.0

api/vendor/composer/pcre/src/PHPStan/PregMatchFlags.php

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+<?php declare(strict_types=1);
+
+namespace Composer\Pcre\PHPStan;
+
+use PHPStan\Analyser\Scope;
+use PHPStan\Type\ArrayType;
+use PHPStan\Type\Constant\ConstantArrayType;
+use PHPStan\Type\Constant\ConstantIntegerType;
+use PHPStan\Type\IntersectionType;
+use PHPStan\Type\TypeCombinator;
+use PHPStan\Type\Type;
+use PhpParser\Node\Arg;
+use PHPStan\Type\Php\RegexArrayShapeMatcher;
+use PHPStan\Type\TypeTraverser;
+use PHPStan\Type\UnionType;
+
+final class PregMatchFlags
+{
+    static public function getType(?Arg $flagsArg, Scope $scope): ?Type
+    {
+        if ($flagsArg === null) {
+            return new ConstantIntegerType(PREG_UNMATCHED_AS_NULL);
+        }
+
+        $flagsType = $scope->getType($flagsArg->value);
+
+        $constantScalars = $flagsType->getConstantScalarValues();
+        if ($constantScalars === []) {
+            return null;
+        }
+
+        $internalFlagsTypes = [];
+        foreach ($flagsType->getConstantScalarValues() as $constantScalarValue) {
+            if (!is_int($constantScalarValue)) {
+                return null;
+            }
+
+            $internalFlagsTypes[] = new ConstantIntegerType($constantScalarValue | PREG_UNMATCHED_AS_NULL);
+        }
+        return TypeCombinator::union(...$internalFlagsTypes);
+    }
+
+    static public function removeNullFromMatches(Type $matchesType): Type
+    {
+        return TypeTraverser::map($matchesType, static function (Type $type, callable $traverse): Type {
+            if ($type instanceof UnionType || $type instanceof IntersectionType) {
+                return $traverse($type);
+            }
+
+            if ($type instanceof ConstantArrayType) {
+                return new ConstantArrayType(
+                    $type->getKeyTypes(),
+                    array_map(static function (Type $valueType) use ($traverse): Type {
+                        return $traverse($valueType);
+                    }, $type->getValueTypes()),
+                    $type->getNextAutoIndexes(),
+                    [],
+                    $type->isList()
+                );
+            }
+
+            if ($type instanceof ArrayType) {
+                return new ArrayType($type->getKeyType(), $traverse($type->getItemType()));
+            }
+
+            return TypeCombinator::removeNull($type);
+        });
+    }
+
+}