Add Composer autoloading functions and PHPStan for testing

vendor/phpstan/phpdoc-parser/src/Parser/ParserException.php

@@ -0,0 +1,69 @@
+<?php declare(strict_types = 1);
+
+namespace PHPStan\PhpDocParser\Parser;
+
+use PHPStan\PhpDocParser\Lexer\Lexer;
+
+class ParserException extends \Exception
+{
+
+	/** @var string */
+	private $currentTokenValue;
+
+	/** @var int */
+	private $currentTokenType;
+
+	/** @var int */
+	private $currentOffset;
+
+	/** @var int */
+	private $expectedTokenType;
+
+	public function __construct(
+		string $currentTokenValue,
+		int $currentTokenType,
+		int $currentOffset,
+		int $expectedTokenType
+	)
+	{
+		$this->currentTokenValue = $currentTokenValue;
+		$this->currentTokenType = $currentTokenType;
+		$this->currentOffset = $currentOffset;
+		$this->expectedTokenType = $expectedTokenType;
+
+		$json = json_encode($currentTokenValue, JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+		assert($json !== false);
+
+		parent::__construct(sprintf(
+			'Unexpected token %s, expected %s at offset %d',
+			$json,
+			Lexer::TOKEN_LABELS[$expectedTokenType],
+			$currentOffset
+		));
+	}
+
+
+	public function getCurrentTokenValue(): string
+	{
+		return $this->currentTokenValue;
+	}
+
+
+	public function getCurrentTokenType(): int
+	{
+		return $this->currentTokenType;
+	}
+
+
+	public function getCurrentOffset(): int
+	{
+		return $this->currentOffset;
+	}
+
+
+	public function getExpectedTokenType(): int
+	{
+		return $this->expectedTokenType;
+	}
+
+}