type '?xyz' sets nullable flag

Author: dg

src/PhpGenerator/Parameter.php

@@ -56,6 +56,10 @@ public function isReference(): bool
 	/** @return static */
 	public function setType(?string $type): self
 	{
+		if ($type && $type[0] === '?') {
+			$type = substr($type, 1);
+			$this->nullable = true;
+		}
 		$this->type = $type;
 		return $this;
 	}

src/PhpGenerator/Property.php

@@ -71,9 +71,13 @@ public function isStatic(): bool
 
 
 	/** @return static */
-	public function setType(?string $val): self
+	public function setType(?string $type): self
 	{
-		$this->type = $val;
+		if ($type && $type[0] === '?') {
+			$type = substr($type, 1);
+			$this->nullable = true;
+		}
+		$this->type = $type;
 		return $this;
 	}
 

src/PhpGenerator/Traits/FunctionLike.php

@@ -125,9 +125,13 @@ public function isVariadic(): bool
 
 
 	/** @return static */
-	public function setReturnType(?string $val): self
+	public function setReturnType(?string $type): self
 	{
-		$this->returnType = $val;
+		if ($type && $type[0] === '?') {
+			$type = substr($type, 1);
+			$this->returnNullable = true;
+		}
+		$this->returnType = $type;
 		return $this;
 	}
 

tests/PhpGenerator/PhpNamespace.phpt

@@ -81,7 +81,7 @@ $method->addParameter('a')->setType('Bar\C')->addAttribute('Bar\\D');
 $method->addParameter('b')->setType('self');
 $method->addParameter('c')->setType('parent');
 $method->addParameter('d')->setType('array');
-$method->addParameter('e')->setType('callable');
+$method->addParameter('e')->setType('?callable');
 $method->addParameter('f')->setType('Bar\C|string');
 
 sameFile(__DIR__ . '/expected/PhpNamespace.expect', (string) $namespace);

tests/PhpGenerator/expected/PhpNamespace.expect

@@ -13,7 +13,7 @@ class A implements A, C
 		self $b,
 		parent $c,
 		array $d,
-		callable $e,
+		?callable $e,
 		C|string $f,
 	): static|A {
 	}