Add an example of custom pattern in unit tests

src/JsPhpize/Lexer/Lexer.php

@@ -88,7 +88,7 @@ public function getNextParseLength($input = null)
         return $length - mb_strlen($parser->rest());
     }
 
-    protected function consume($consumed)
+    public function consume($consumed)
     {
         $consumed = is_int($consumed) ? mb_substr($this->input, 0, $consumed) : $consumed;
         $this->consumed = mb_strlen(trim($consumed)) > 1 ? $consumed : $this->consumed . $consumed;

src/JsPhpize/Lexer/StringLexer.php

@@ -2,8 +2,6 @@
 
 namespace JsPhpize\Lexer;
 
-use JsPhpize\Parser\Exception;
-
 class StringLexer
 {
     /**
@@ -54,7 +52,7 @@ public function getBackTickString(): string
         }
 
         if (!preg_match('/^(\\\\.|\\$(?!{)|[^`$])*`/U', $this->input, $match)) {
-            throw new Exception('Unterminated ` string after ' . $this->string);
+            throw new Exception('Unterminated ` string after ' . $this->string, 27);
         }
 
         return $this->string . $match[0];

tests/CustomPattern.php

@@ -0,0 +1,19 @@
+<?php
+
+class CustomPattern extends \JsPhpize\Lexer\Pattern
+{
+    public function __construct()
+    {
+        parent::__construct(42, 'string', []);
+    }
+
+    public function lexWith(\JsPhpize\Lexer\Lexer $lexer): Generator
+    {
+        if (substr($lexer->rest(), 0, 1) === '@') {
+            $lexer->consume(1);
+            yield new \JsPhpize\Lexer\Token('string', ['value' => '"@1"']);
+            yield new \JsPhpize\Lexer\Token(',', []);
+            yield new \JsPhpize\Lexer\Token('string', ['value' => '"@2"']);
+        }
+    }
+}

tests/badSyntaxes.php

@@ -137,4 +137,15 @@ public function testPhpCode()
         $jsPhpize = new JsPhpize();
         $jsPhpize->render('DateTime::createFromFormat(\'j-M-Y\', \'15-Feb-2009\')');
     }
+
+    /**
+     * @expectedException        \JsPhpize\Lexer\Exception
+     * @expectedExceptionCode    27
+     * @expectedExceptionMessage Unterminated ` string after `foo ${`bar`}
+     */
+    public function testUnterminatedString()
+    {
+        $jsPhpize = new JsPhpize();
+        $jsPhpize->render('`foo ${`bar`}');
+    }
 }

tests/options.php

@@ -121,6 +121,18 @@ public function testPatterns()
         $this->assertSame('1 @ 8;', trim($code));
     }
 
+    /**
+     * @group patterns
+     */
+    public function testCustomPattern()
+    {
+        include_once __DIR__ . '/CustomPattern.php';
+        $jsPhpize = new JsPhpize();
+        $jsPhpize->addPattern(new CustomPattern());
+        $code = $jsPhpize->compile('foo(@)');
+        $this->assertSame('(function_exists(\'foo\') ? foo("@1", "@2") : $foo("@1", "@2"));', trim($code));
+    }
+
     /**
      * @group patterns
      * @expectedException     \JsPhpize\Lexer\Exception