Added support for castling moves with zeroes

Author: waltertamboer

composer.json

@@ -5,7 +5,7 @@
     "type": "library",
     "require": {
         "php": "^7.1",
-        "chesszebra/standard-algebraic-notation": "^1.0"
+        "chesszebra/standard-algebraic-notation": "^1.4"
     },
     "require-dev": {
         "phpunit/phpunit": "^6.4",

composer.lock

@@ -84,6 +84,12 @@ public function getNextToken(): ?TokenInterface
             return new StandardAlgebraicNotation(new Notation($matches[1]));
         }
 
+        // Match a SAN (castling):
+        if (preg_match('/^\s*(0-0(?:-0)?[\+\-\!\#\=\?]*)\s*/s', $this->buffer, $matches)) {
+            $this->buffer = substr($this->buffer, strlen($matches[0]));
+            return new StandardAlgebraicNotation(new Notation($matches[1]));
+        }
+
         // Match a SAN:
         if (preg_match('/^\s*([a-zA-Z][a-zA-Z0-9\+\-\!\#\=\?]+)\s*/s', $this->buffer, $matches)) {
             $this->buffer = substr($this->buffer, strlen($matches[0]));

src/Lexer/AbstractLexer.php

@@ -316,6 +316,20 @@ public function testMatchSANCastling()
         static::assertInstanceOf(StandardAlgebraicNotation::class, $result);
     }
 
+    public function testMatchSANCastlingZeroes()
+    {
+        // Arrange
+        $buffer = '0-0';
+
+        $lexer = new StringLexer($buffer);
+
+        // Act
+        $result = $lexer->getNextToken();
+
+        // Assert
+        static::assertInstanceOf(StandardAlgebraicNotation::class, $result);
+    }
+
     public function testMatchSAN()
     {
         // Arrange