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<?php declare(strict_types = 1);

namespace SlevomatCodingStandard\Helpers;

use PHP_CodeSniffer\Files\File;
use function array_key_exists;
use function count;
use const T_ABSTRACT;
use const T_ANON_CLASS;
use const T_ARRAY;
use const T_BREAK;
use const T_CALLABLE;
use const T_CLASS;
use const T_CLOSURE;
use const T_COMMENT;
use const T_CONTINUE;
use const T_DOC_COMMENT;
use const T_DOC_COMMENT_CLOSE_TAG;
use const T_DOC_COMMENT_OPEN_TAG;
use const T_DOC_COMMENT_STAR;
use const T_DOC_COMMENT_STRING;
use const T_DOC_COMMENT_TAG;
use const T_DOC_COMMENT_WHITESPACE;
use const T_ENUM;
use const T_EXIT;
use const T_FALSE;
use const T_FINAL;
use const T_FN;
use const T_FUNCTION;
use const T_INTERFACE;
use const T_NAME_FULLY_QUALIFIED;
use const T_NAME_QUALIFIED;
use const T_NAME_RELATIVE;
use const T_NS_SEPARATOR;
use const T_NULL;
use const T_OPEN_SHORT_ARRAY;
use const T_PARENT;
use const T_PHPCS_DISABLE;
use const T_PHPCS_ENABLE;
use const T_PHPCS_IGNORE;
use const T_PHPCS_IGNORE_FILE;
use const T_PHPCS_SET;
use const T_PRIVATE;
use const T_PRIVATE_SET;
use const T_PROTECTED;
use const T_PROTECTED_SET;
use const T_PUBLIC;
use const T_PUBLIC_SET;
use const T_READONLY;
use const T_RETURN;
use const T_SELF;
use const T_STATIC;
use const T_STRING;
use const T_THROW;
use const T_TRAIT;
use const T_TRUE;
use const T_TYPE_CLOSE_PARENTHESIS;
use const T_TYPE_INTERSECTION;
use const T_TYPE_OPEN_PARENTHESIS;
use const T_TYPE_UNION;
use const T_VAR;
use const T_WHITESPACE;

/**
 * @internal
 */
class TokenHelper
{

public const ONLY_NAME_TOKEN_CODES = [
		T_STRING,
		T_NAME_FULLY_QUALIFIED,
		T_NAME_QUALIFIED,
		T_NAME_RELATIVE,
	];

public const NAME_TOKEN_CODES = [
		...self::ONLY_NAME_TOKEN_CODES,
		T_NS_SEPARATOR,
	];

public const ONLY_TYPE_HINT_TOKEN_CODES = [
		...self::NAME_TOKEN_CODES,
		T_SELF,
		T_PARENT,
		T_CALLABLE,
		T_FALSE,
		T_TRUE,
		T_NULL,
	];

public const TYPE_HINT_TOKEN_CODES = [
		...self::ONLY_TYPE_HINT_TOKEN_CODES,
		T_TYPE_UNION,
		T_TYPE_INTERSECTION,
		T_TYPE_OPEN_PARENTHESIS,
		T_TYPE_CLOSE_PARENTHESIS,
	];

public const MODIFIERS_TOKEN_CODES = [
		T_FINAL,
		T_ABSTRACT,
		T_VAR,
		T_PUBLIC,
		T_PUBLIC_SET,
		T_PROTECTED,
		T_PROTECTED_SET,
		T_PRIVATE,
		T_PRIVATE_SET,
		T_READONLY,
		T_STATIC,
	];

public const PROPERTY_MODIFIERS_TOKEN_CODES = self::MODIFIERS_TOKEN_CODES;

public const ARRAY_TOKEN_CODES = [
		T_ARRAY,
		T_OPEN_SHORT_ARRAY,
	];

public const CLASS_TYPE_TOKEN_CODES = [
		T_CLASS,
		T_TRAIT,
		T_INTERFACE,
		T_ENUM,
	];

public const CLASS_TYPE_WITH_ANONYMOUS_CLASS_TOKEN_CODES = [
		...self::CLASS_TYPE_TOKEN_CODES,
		T_ANON_CLASS,
	];

public const ANNOTATION_TOKEN_CODES = [
		T_DOC_COMMENT_TAG,
		T_PHPCS_DISABLE,
		T_PHPCS_ENABLE,
		T_PHPCS_IGNORE,
		T_PHPCS_IGNORE_FILE,
		T_PHPCS_SET,
	];

public const INLINE_COMMENT_TOKEN_CODES = [
		T_COMMENT,
		T_PHPCS_DISABLE,
		T_PHPCS_ENABLE,
		T_PHPCS_IGNORE,
		T_PHPCS_IGNORE_FILE,
		T_PHPCS_SET,
	];

public const INEFFECTIVE_TOKEN_CODES = [
		T_WHITESPACE,
		T_DOC_COMMENT,
		T_DOC_COMMENT_OPEN_TAG,
		T_DOC_COMMENT_CLOSE_TAG,
		T_DOC_COMMENT_STAR,
		T_DOC_COMMENT_STRING,
		T_DOC_COMMENT_TAG,
		T_DOC_COMMENT_WHITESPACE,
		...self::INLINE_COMMENT_TOKEN_CODES,
	];

public const EARLY_EXIT_TOKEN_CODES = [
		T_RETURN,
		T_CONTINUE,
		T_BREAK,
		T_THROW,
		T_EXIT,
	];

public const FUNCTION_TOKEN_CODES = [
		T_FUNCTION,
		T_CLOSURE,
		T_FN,
	];

/**
	 * @param int|string|array<int|string, int|string> $types
	 */
	public static function findNext(File $phpcsFile, $types, int $startPointer, ?int $endPointer = null): ?int
	{
		/** @var int|false $token */
		$token = $phpcsFile->findNext($types, $startPointer, $endPointer, false);
		return $token === false ? null : $token;
	}

/**
	 * @param int|string|array<int|string, int|string> $types
	 * @return list<int>
	 */
	public static function findNextAll(File $phpcsFile, $types, int $startPointer, ?int $endPointer = null): array
	{
		$pointers = [];

$actualStartPointer = $startPointer;
		while (true) {
			$pointer = self::findNext($phpcsFile, $types, $actualStartPointer, $endPointer);
			if ($pointer === null) {
				break;
			}

$pointers[] = $pointer;
			$actualStartPointer = $pointer + 1;
		}

return $pointers;
	}

/**
	 * @param int|string|array<int|string, int|string> $types
	 */
	public static function findNextContent(File $phpcsFile, $types, string $content, int $startPointer, ?int $endPointer = null): ?int
	{
		/** @var int|false $token */
		$token = $phpcsFile->findNext($types, $startPointer, $endPointer, false, $content);
		return $token === false ? null : $token;
	}

/**
	 * @param int $startPointer Search starts at this token, inclusive
	 * @param int|null $endPointer Search ends at this token, exclusive
	 */
	public static function findNextEffective(File $phpcsFile, int $startPointer, ?int $endPointer = null): ?int
	{
		return self::findNextExcluding($phpcsFile, self::INEFFECTIVE_TOKEN_CODES, $startPointer, $endPointer);
	}

/**
	 * @param int $startPointer Search starts at this token, inclusive
	 * @param int|null $endPointer Search ends at this token, exclusive
	 */
	public static function findNextNonWhitespace(File $phpcsFile, int $startPointer, ?int $endPointer = null): ?int
	{
		return self::findNextExcluding($phpcsFile, T_WHITESPACE, $startPointer, $endPointer);
	}

/**
	 * @param int|string|array<int|string, int|string> $types
	 * @param int $startPointer Search starts at this token, inclusive
	 * @param int|null $endPointer Search ends at this token, exclusive
	 */
	public static function findNextExcluding(File $phpcsFile, $types, int $startPointer, ?int $endPointer = null): ?int
	{
		/** @var int|false $token */
		$token = $phpcsFile->findNext($types, $startPointer, $endPointer, true);
		return $token === false ? null : $token;
	}

/**
	 * @param int|string|array<int|string, int|string> $types
	 */
	public static function findNextLocal(File $phpcsFile, $types, int $startPointer, ?int $endPointer = null): ?int
	{
		/** @var int|false $token */
		$token = $phpcsFile->findNext($types, $startPointer, $endPointer, false, null, true);
		return $token === false ? null : $token;
	}

/**
	 * @param int $startPointer Search starts at this token, inclusive
	 * @param int|null $endPointer Search ends at this token, exclusive
	 */
	public static function findNextAnyToken(File $phpcsFile, int $startPointer, ?int $endPointer = null): ?int
	{
		return self::findNextExcluding($phpcsFile, [], $startPointer, $endPointer);
	}

/**
	 * @param int|string|array<int|string, int|string> $types
	 * @param int $startPointer Search starts at this token, inclusive
	 * @param int|null $endPointer Search ends at this token, exclusive
	 */
	public static function findPrevious(File $phpcsFile, $types, int $startPointer, ?int $endPointer = null): ?int
	{
		/** @var int|false $token */
		$token = $phpcsFile->findPrevious($types, $startPointer, $endPointer, false);
		return $token === false ? null : $token;
	}

/**
	 * @param int|string|array<int|string, int|string> $types
	 */
	public static function findPreviousContent(File $phpcsFile, $types, string $content, int $startPointer, ?int $endPointer = null): ?int
	{
		/** @var int|false $token */
		$token = $phpcsFile->findPrevious($types, $startPointer, $endPointer, false, $content);
		return $token === false ? null : $token;
	}

/**
	 * @param int $startPointer Search starts at this token, inclusive
	 * @param int|null $endPointer Search ends at this token, exclusive
	 */
	public static function findPreviousEffective(File $phpcsFile, int $startPointer, ?int $endPointer = null): ?int
	{
		return self::findPreviousExcluding($phpcsFile, self::INEFFECTIVE_TOKEN_CODES, $startPointer, $endPointer);
	}

/**
	 * @param int $startPointer Search starts at this token, inclusive
	 * @param int|null $endPointer Search ends at this token, exclusive
	 */
	public static function findPreviousNonWhitespace(File $phpcsFile, int $startPointer, ?int $endPointer = null): ?int
	{
		return self::findPreviousExcluding($phpcsFile, T_WHITESPACE, $startPointer, $endPointer);
	}

/**
	 * @param int|string|array<int|string, int|string> $types
	 * @param int $startPointer Search starts at this token, inclusive
	 * @param int|null $endPointer Search ends at this token, exclusive
	 */
	public static function findPreviousExcluding(File $phpcsFile, $types, int $startPointer, ?int $endPointer = null): ?int
	{
		/** @var int|false $token */
		$token = $phpcsFile->findPrevious($types, $startPointer, $endPointer, true);
		return $token === false ? null : $token;
	}

/**
	 * @param int|string|array<int|string, int|string> $types
	 */
	public static function findPreviousLocal(File $phpcsFile, $types, int $startPointer, ?int $endPointer = null): ?int
	{
		/** @var int|false $token */
		$token = $phpcsFile->findPrevious($types, $startPointer, $endPointer, false, null, true);
		return $token === false ? null : $token;
	}

/**
	 * @param int $pointer Search starts at this token, inclusive
	 */
	public static function findFirstTokenOnLine(File $phpcsFile, int $pointer): int
	{
		if ($pointer === 0) {
			return $pointer;
		}

$tokens = $phpcsFile->getTokens();