Add basic support for new-in-initializer

Author: rvanvelzen

src/Ast/ConstExpr/ConstExprNewNode.php

@@ -0,0 +1,34 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\PhpDocParser\Ast\ConstExpr;
+
+use PHPStan\PhpDocParser\Ast\NodeAttributes;
+use function implode;
+
+class ConstExprNewNode implements ConstExprNode
+{
+
+	use NodeAttributes;
+
+	/** @var string */
+	public $class;
+
+	/** @var ConstExprNode[] */
+	public $arguments;
+
+	/**
+	 * @param ConstExprNode[] $arguments
+	 */
+	public function __construct(string $class, array $arguments)
+	{
+		$this->class = $class;
+		$this->arguments = $arguments;
+	}
+
+
+	public function __toString(): string
+	{
+		return 'new ' . $this->class . '(' . implode(', ', $this->arguments) . ')';
+	}
+
+}

src/Parser/ConstExprParser.php

@@ -183,6 +183,8 @@ public function parse(TokenIterator $tokens, bool $trimStrings = false): Ast\Con
 				case 'array':
 					$tokens->consumeTokenType(Lexer::TOKEN_OPEN_PARENTHESES);
 					return $this->parseArray($tokens, Lexer::TOKEN_CLOSE_PARENTHESES, $startIndex);
+				case 'new':
+					return $this->parseNew($tokens, $startIndex);
 			}
 
 			if ($tokens->tryConsumeTokenType(Lexer::TOKEN_DOUBLE_COLON)) {
@@ -269,6 +271,30 @@ private function parseArray(TokenIterator $tokens, int $endToken, int $startInde
 	}
 
 
+	private function parseNew(TokenIterator $tokens, int $startIndex): Ast\ConstExpr\ConstExprNewNode
+	{
+		$startLine = $tokens->currentTokenLine();
+
+		$class = $tokens->currentTokenValue();
+		$tokens->consumeTokenType(Lexer::TOKEN_IDENTIFIER);
+
+		$arguments = [];
+		if ($tokens->tryConsumeTokenType(Lexer::TOKEN_OPEN_PARENTHESES)) {
+			do {
+				$arguments[] = $this->parse($tokens);
+			} while ($tokens->tryConsumeTokenType(Lexer::TOKEN_COMMA) && !$tokens->isCurrentTokenType(Lexer::TOKEN_CLOSE_PARENTHESES));
+			$tokens->consumeTokenType(Lexer::TOKEN_CLOSE_PARENTHESES);
+		}
+
+		return $this->enrichWithAttributes(
+			$tokens,
+			new Ast\ConstExpr\ConstExprNewNode($class, $arguments),
+			$startLine,
+			$startIndex
+		);
+	}
+
+
 	/**
 	 * This method is supposed to be called with TokenIterator after reading TOKEN_DOUBLE_QUOTED_STRING and shifting
 	 * to the next token.

src/Parser/TypeParser.php

@@ -221,7 +221,7 @@ private function parseAtomic(TokenIterator $tokens): Ast\Type\TypeNode
 
 		try {
 			$constExpr = $this->constExprParser->parse($tokens, true);
-			if ($constExpr instanceof Ast\ConstExpr\ConstExprArrayNode) {
+			if ($constExpr instanceof Ast\ConstExpr\ConstExprArrayNode || $constExpr instanceof Ast\ConstExpr\ConstExprNewNode) {
 				throw new ParserException(
 					$currentTokenValue,
 					$currentTokenType,
@@ -732,7 +732,7 @@ private function parseCallableReturnType(TokenIterator $tokens): Ast\Type\TypeNo
 
 		try {
 			$constExpr = $this->constExprParser->parse($tokens, true);
-			if ($constExpr instanceof Ast\ConstExpr\ConstExprArrayNode) {
+			if ($constExpr instanceof Ast\ConstExpr\ConstExprArrayNode || $constExpr instanceof Ast\ConstExpr\ConstExprNewNode) {
 				throw new ParserException(
 					$currentTokenValue,
 					$currentTokenType,

tests/PHPStan/Parser/PhpDocParserTest.php

@@ -8,6 +8,7 @@
 use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprArrayItemNode;
 use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprArrayNode;
 use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprIntegerNode;
+use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprNewNode;
 use PHPStan\PhpDocParser\Ast\ConstExpr\ConstExprStringNode;
 use PHPStan\PhpDocParser\Ast\ConstExpr\ConstFetchNode;
 use PHPStan\PhpDocParser\Ast\ConstExpr\DoctrineConstExprStringNode;
@@ -2762,6 +2763,66 @@ public function provideMethodTagsData(): Iterator
 				),
 			]),
 		];
+
+		yield [
+			'OK static with parameter using new in initializer',
+			'/** @method static void myFunction(DateInterval $date = new DateInterval("P1Y")) */',
+			new PhpDocNode([
+				new PhpDocTagNode(
+					'@method',
+					new MethodTagValueNode(
+						true,
+						new IdentifierTypeNode('void'),
+						'myFunction',
+						[
+							new MethodTagValueParameterNode(
+								new IdentifierTypeNode('DateInterval'),
+								false,
+								false,
+								'$date',
+								new ConstExprNewNode(
+									'DateInterval',
+									[
+										new ConstExprStringNode('"P1Y"'),
+									]
+								)
+							),
+						],
+						''
+					)
+				),
+			]),
+		];
+
+		yield [
+			'OK static with parameter using new in initializer with nested new',
+			'/** @method static void myFunction(SomeClass $object = new SomeClass(new SomeClass)) */',
+			new PhpDocNode([
+				new PhpDocTagNode(
+					'@method',
+					new MethodTagValueNode(
+						true,
+						new IdentifierTypeNode('void'),
+						'myFunction',
+						[
+							new MethodTagValueParameterNode(
+								new IdentifierTypeNode('SomeClass'),
+								false,
+								false,
+								'$object',
+								new ConstExprNewNode(
+									'SomeClass',
+									[
+										new ConstExprNewNode('SomeClass', []),
+									]
+								)
+							),
+						],
+						''
+					)
+				),
+			]),
+		];
 	}