🎨 various improvements

.github/workflows/run-tests.yml

@@ -15,7 +15,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
 
       - name: Setup PHP
         uses: shivammathur/setup-php@v2
@@ -27,7 +27,7 @@ jobs:
 
       - name: Cache Composer packages
         id: composer-cache
-        uses: actions/cache@v2
+        uses: actions/cache@v3
         with:
           path: vendor
           key: ${{ matrix.php }}-php-${{ hashFiles('**/composer.lock') }}

.php-cs-fixer.php

@@ -2,10 +2,9 @@
 
 return (new PhpCsFixer\Config())
     ->setRules([
-        '@PSR2' => true,
+        '@PSR12' => true,
         'array_syntax' => ['syntax' => 'short'],
         'binary_operator_spaces' => ['operators' => ['=>' => 'single_space', '=' => 'single_space']],
-        'blank_line_after_opening_tag' => true,
         'blank_line_before_statement' => ['statements' => ['return']],
         'cast_spaces' => true,
         'concat_space' => ['spacing' => 'none'],
@@ -20,12 +19,10 @@
         'no_unneeded_control_parentheses' => true,
         'no_unused_imports' => true,
         'no_whitespace_in_blank_line' => true,
-        'ordered_imports' => true,
         'phpdoc_align' => true,
         'phpdoc_no_access' => true,
         'php_unit_fqcn_annotation' => true,
         'self_accessor' => true,
-        'single_blank_line_before_namespace' => true,
         'single_quote' => true,
         'return_type_declaration' => true,
         'trailing_comma_in_multiline' => true,

README.md

@@ -4,7 +4,7 @@ Chess is a PHP chess library that is used for chess move
 generation/validation, piece placement/movement, and check/checkmate/stalemate
 detection - basically everything but the AI. 
 
-NOTE: this started as a port of [chess.js](https://github.com/jhlywa/chess.js) for php, froked from [ryanhs/chess.php](https://github.com/ryanhs/chess.php)
+NOTE: this started as a port of [chess.js](https://github.com/jhlywa/chess.js) for php, forked from [ryanhs/chess.php](https://github.com/ryanhs/chess.php)
 
 [![Latest Stable Version](https://poser.pugx.org/p-chess/chess/v/stable)](https://packagist.org/p-chess/chess)
 [![buddy branch](https://app.buddy.works/akondas/chess/repository/branch/master/badge.svg?token=bfd952ec0cee0cb4db84dbd50ded487354ee6c9f37a7034f7c46425fed70dea7 "buddy branch")](https://app.buddy.works/akondas/chess/repository/branch/master)
@@ -117,13 +117,13 @@ There is still a lot to do in this topic.
 ### Chess::move()
 
 | iteration | mean  | comment |
-| :-------: | :---: | ------- |
+|-----------|-------|---------|
 | 1 | 548.819μs | initial |
-| 2 | 447.973μs | replace fen with json_encode in history position (inThreefoldRepetition cache)
-| 3 | 340.375μs | replace fen with json_encode in generateMoves
-| 4 | 333.145μs | add boardHash calculation on make/undo move
-| 5 | 25.917μs | :fire: add cache for moveToSAN method 
+| 2 | 447.973μs | replace fen with json_encode in history position (inThreefoldRepetition cache) |
+| 3 | 340.375μs | replace fen with json_encode in generateMoves |
+| 4 | 333.145μs | add boardHash calculation on make/undo move |
+| 5 | 25.917μs | :fire: add cache for moveToSAN method |
 
 ## Other documentation
 
-All classes are documented in [docs directory](docs/index.md).
+All classes are documented in the [docs directory](docs/index.md).

benchmarks/MoveBench.php

@@ -14,10 +14,7 @@
  */
 final class MoveBench
 {
-    /**
-     * @var Chess
-     */
-    private $chess;
+    private Chess $chess;
 
     public function init(): void
     {
@@ -26,6 +23,7 @@ public function init(): void
 
     /**
      * @Revs(1000)
+     *
      * @Iterations(5)
      */
     public function benchMove(): void
@@ -35,6 +33,7 @@ public function benchMove(): void
 
     /**
      * @Revs(1000)
+     *
      * @Iterations(5)
      */
     public function benchMoves(): void

composer.json

@@ -23,12 +23,12 @@
         "ext-json": "*"
     },
     "require-dev": {
-        "friendsofphp/php-cs-fixer": "^3.13",
+        "friendsofphp/php-cs-fixer": "^3.37",
         "imagine/imagine": "^1.3",
         "johnkary/phpunit-speedtrap": "^4.0",
         "phpbench/phpbench": "^1.2",
-        "phpstan/phpstan": "^1.9",
-        "phpunit/phpunit": "^9.5"
+        "phpstan/phpstan": "^1.10",
+        "phpunit/phpunit": "^9.6"
     },
     "suggest": {
         "imagine/imagine": "To generate board images."

docs/board.md

@@ -27,7 +27,7 @@ with [SAN](https://en.wikipedia.org/wiki/Algebraic_notation_(chess)):
 * `algebraic()`: get the SAN of a square, as string (e.g. "e2").
    This should be the same as calling `Board::SQUARES[$square]`
 
-Such methods accept a integer square (see `SQUARES` constant). 
+Such methods accept an integer square (see `SQUARES` constant). 
 
 Useful constants represent starting board (`Board::DEFAULT_POSITION`) and empty board (`Board::EMPTY`)
 in [FEN](https://en.wikipedia.org/wiki/Forsyth%E2%80%93Edwards_Notation) notation.

docs/output_imagine.md

@@ -6,7 +6,7 @@ and one extension between GD and Imagick.
 You need to provide an instance of Imagine, and a path of images for pieces.
 Names of such images need to match a color/name code.
 For example, a black pawn image must be named `bp.png` (_b_ for black and _p_ for pawn), a
-white queen image must me named `wq.png` (_w_ for white and _q_ for queen).
+white queen image must be named `wq.png` (_w_ for white and _q_ for queen).
 Refer to `Piece` class source code to get all abbreviations.
 A good source for free images is [Wikimedia](https://commons.wikimedia.org/wiki/Category:SVG_chess_pieces).
 
@@ -52,5 +52,5 @@ public function __construct(
 );
 ```
 
-In this directory, you can find an utility script, named [get-resources.sh](get-resources.sh), that downloads
+In this directory, you can find a utility script, named [get-resources.sh](get-resources.sh), that downloads
 all pieces images from Wikimedia, plus a free font to use.

src/Board.php

@@ -115,7 +115,7 @@ public function offsetUnset($offset): void
 
     public function current(): ?Piece
     {
-        return \current($this->squares) !== false ? \current($this->squares): null;
+        return \current($this->squares) !== false ? \current($this->squares) : null;
     }
 
     public function next(): void

src/Chess.php

@@ -395,7 +395,7 @@ public function undo(): ?Move
      */
     protected function generateMoves(int $square = null, bool $legal = true): array
     {
-        $cacheKey = $this->boardHash.\json_encode($square.($legal ? '1' : '0'));
+        $cacheKey = $this->boardHash.\json_encode($square.($legal ? '1' : '0'), JSON_THROW_ON_ERROR);
 
         // check cache first
         if (isset($this->generateMovesCache[$cacheKey])) {

src/Entry.php

@@ -6,29 +6,23 @@
 
 class Entry
 {
-    /** @var Move */
-    public $move;
+    public Move $move;
 
-    /** @var string|null */
-    public $position;
+    public ?string $position;
 
     /** @var array<string, ?int> */
-    public $kings;
+    public array $kings;
 
-    /** @var string */
-    public $turn;
+    public string $turn;
 
     /** @var array<string, ?int> */
-    public $castling;
+    public array $castling;
 
-    /** @var int|null */
-    public $epSquare;
+    public ?int $epSquare;
 
-    /** @var int */
-    public $halfMoves;
+    public int $halfMoves;
 
-    /** @var int */
-    public $moveNumber;
+    public int $moveNumber;
 
     /**
      * @param array<string, ?int> $kings

src/History.php

@@ -7,7 +7,7 @@
 final class History
 {
     /** @var array<int, Entry> */
-    private $entries;
+    private array $entries;
 
     /** @param array<int, Entry>|null $entries */
     public function __construct(array $entries = null)

src/Move.php

@@ -16,35 +16,25 @@ final class Move implements \JsonSerializable
         'QSIDE_CASTLE' => 64,
     ];
 
-    /** @var string */
-    public $turn;
+    public string $turn;
 
-    /** @var int */
-    public $flags;
+    public int $flags;
 
-    /** @var Piece */
-    public $piece;
+    public Piece $piece;
 
-    /** @var string */
-    public $from;
+    public string $from;
 
-    /** @var string */
-    public $to;
+    public string $to;
 
-    /** @var int */
-    public $fromSquare;
+    public int $fromSquare;
 
-    /** @var int */
-    public $toSquare;
+    public int $toSquare;
 
-    /** @var string|null */
-    public $captured;
+    public ?string $captured;
 
-    /** @var string|null */
-    public $promotion;
+    public ?string $promotion;
 
-    /** @var string|null */
-    public $san;
+    public ?string $san;
 
     public function __construct(string $turn, int $flags, Piece $piece, int $from, int $to, ?string $captured = null, ?string $promotion = null)
     {

src/Output/BasicOutput.php

@@ -8,8 +8,7 @@
 
 abstract class BasicOutput
 {
-    /** @var string */
-    protected static $line = '   +---+---+---+---+---+---+---+---+'.PHP_EOL;
+    protected static string $line = '   +---+---+---+---+---+---+---+---+'.PHP_EOL;
 
     protected static function getLines(bool $reversed, int $position): string
     {

src/Output/HtmlOutput.php

@@ -46,7 +46,7 @@ public function render(Chess $chess, ?string $from = null, $identifier = null):
     }
 
     /**
-     * Generete an array of 64 Link objects to use in render() method.
+     * Generate an array of 64 Link objects to use in render() method.
      * Basically, you should cycle the board, assigning values to Link for pieces that can actually move.
      * There are two possible situations: 1) $from is null (move has to start); 2) $from is not null (move started).
      * In first case, you should assign a "start move" link to every piece that is allowed to move

src/Output/Link.php

@@ -6,13 +6,13 @@
 
 /**
  * This is a simple value object used by HtmlOutput to represent
- * a CSS class and an URL (both can be null).
+ * a CSS class and a URL (both can be null).
  */
 final class Link
 {
-    private ?string $class = null;
+    private ?string $class;
 
-    private ?string $url = null;
+    private ?string $url;
 
     public function __construct(?string $class, ?string $url)
     {

src/Piece.php

@@ -18,6 +18,9 @@ final class Piece implements \JsonSerializable
     public const BLACK = 'b';
     public const WHITE = 'w';
 
+    /**
+     * @var array<string, int[]>
+     */
     public const PAWN_OFFSETS = [
         self::BLACK => [16,  32,  17,  15],
         self::WHITE => [-16, -32, -17, -15],

tests/FenTest.php

@@ -27,7 +27,7 @@ public function testGetErrorString(): void
     /**
      * @return array<int|string, array<int, int|string>>
      */
-    public function provider(): array
+    public static function provider(): array
     {
         return [
             'default position' => [Board::DEFAULT_POSITION, 0],

tests/MoveTest.php

@@ -416,7 +416,7 @@ public function testMoveToSAN(): void
         \array_walk($moves, static function (Move $move) use ($chess): void {
             $chess->moveToSANPublic($move);
         });
-        $sans = \array_map(static function (Move $move): string {
+        $sans = \array_map(static function (Move $move): ?string {
             return $move->san;
         }, $moves);
         self::assertContains('f8=Q', $sans);
@@ -461,7 +461,7 @@ public function testArrayMove(): void
     /**
      * @dataProvider gameProvider
      */
-    public function testSANMoveFromRealGame(string $match, string $finalFen): void
+    public static function testSANMoveFromRealGame(string $match, string $finalFen): void
     {
         $chess = new ChessPublicator();
         $moves = \explode(' ', $match);

tests/PerftTest.php

@@ -12,7 +12,7 @@ class PerftTest extends TestCase
     /**
      * @dataProvider provider
      */
-    public function testPerft(string $fen, int $expectedDeep1, int $expectedDeep2): void
+    public static function testPerft(string $fen, int $expectedDeep1, int $expectedDeep2): void
     {
         $chess = new ChessPublicator($fen);
         self::assertEquals($expectedDeep1, $chess->perft(1));