Printer: added $singleParameterOnOneLine (#132)

readme.md

@@ -504,6 +504,8 @@ class MyPrinter extends Nette\PhpGenerator\Printer
 	public int $linesBetweenUseTypes = 0;
 	/** position of the opening brace for functions and methods */
 	public bool $bracesOnNextLine = true;
+	/** place one parameter in one line, even if it has an attribute or is promoted */
+	public bool $singleParameterOnOneLine = false;
 	/** separator between the right parenthesis and return type of functions and methods */
 	public string $returnTypeColon = ': ';
 }

src/PhpGenerator/Printer.php

@@ -27,6 +27,7 @@ class Printer
 	public int $linesBetweenUseTypes = 0;
 	public string $returnTypeColon = ': ';
 	public bool $bracesOnNextLine = true;
+	public bool $singleParameterOnOneLine = false;
 	protected ?PhpNamespace $namespace = null;
 	protected ?Dumper $dumper;
 	private bool $resolveTypes = true;
@@ -332,7 +333,7 @@ protected function printParameters(Closure|GlobalFunction|Method $function, int
 			$special = $special || $param instanceof PromotedParameter || $param->getAttributes();
 		}
 
-		if (!$special) {
+		if (!$special || ($this->singleParameterOnOneLine && count($function->getParameters()) === 1)) {
 			$line = $this->formatParameters($function, false);
 			if (!str_contains($line, "\n") && strlen($line) + $column <= $this->wrapLength) {
 				return $line;

tests/PhpGenerator/Printer.single.parameter.phpt

@@ -0,0 +1,88 @@
+<?php
+
+declare(strict_types=1);
+
+use Nette\PhpGenerator\Literal;
+use Nette\PhpGenerator\Printer;
+use Tester\Assert;
+
+require __DIR__ . '/../bootstrap.php';
+
+
+$printer = new Printer;
+$printer->singleParameterOnOneLine = true;
+
+
+$function = new Nette\PhpGenerator\GlobalFunction('singleFunction');
+$function
+	->setReturnType('array')
+	->addParameter('foo')
+		->addAttribute('Foo');
+
+Assert::match(<<<'XX'
+	function singleFunction(#[Foo] $foo): array
+	{
+	}
+
+	XX, $printer->printFunction($function));
+
+
+$method = new Nette\PhpGenerator\Method('singleMethod');
+$method
+	->setPublic()
+	->setReturnType('array')
+	->addParameter('foo')
+		->addAttribute('Foo');
+
+Assert::match(<<<'XX'
+	public function singleMethod(#[Foo] $foo): array
+	{
+	}
+
+	XX, $printer->printMethod($method));
+
+
+$method = new Nette\PhpGenerator\Method('singleMethod');
+$method
+	->setPublic()
+	->setReturnType('array')
+	->addPromotedParameter('foo')
+		->setPublic();
+
+Assert::match(<<<'XX'
+	public function singleMethod(public $foo): array
+	{
+	}
+
+	XX, $printer->printMethod($method));
+
+
+$method = new Nette\PhpGenerator\Method('singleMethod');
+$method
+	->setPublic()
+	->setReturnType('array')
+	->addPromotedParameter('looooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong')
+		->setPublic();
+
+Assert::match(<<<'XX'
+	public function singleMethod(
+		public $looooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooong,
+	): array
+	{
+	}
+
+	XX, $printer->printMethod($method));
+
+
+$method = new Nette\PhpGenerator\Method('singleMethod');
+$method->addParameter('foo')
+	->addAttribute('Foo', [new Literal("'\n'")]);
+
+Assert::match(<<<'XX'
+	function singleMethod(
+		#[Foo('
+		')]
+		$foo,
+	) {
+	}
+	XX, $printer->printMethod($method));