Added match()->groupBy()->byteOffsets() #35

src/TRegx/CleanRegex/Internal/Match/GroupBy/ByteOffsetsStrategy.php

@@ -0,0 +1,18 @@
+<?php
+namespace TRegx\CleanRegex\Internal\Match\GroupBy;
+
+use TRegx\CleanRegex\Internal\Model\Match\IRawMatchOffset;
+use TRegx\CleanRegex\Internal\Model\Matches\IRawMatchesOffset;
+
+class ByteOffsetsStrategy implements Strategy
+{
+    function transform(array $groups, IRawMatchesOffset $matches): array
+    {
+        foreach ($groups as &$group) {
+            $group = array_map(function (IRawMatchOffset $match) {
+                return $match->byteOffset();
+            }, $group);
+        }
+        return $groups;
+    }
+}

src/TRegx/CleanRegex/Match/GroupByPattern.php

@@ -2,6 +2,7 @@
 namespace TRegx\CleanRegex\Match;
 
 use TRegx\CleanRegex\Internal\Match\Base\Base;
+use TRegx\CleanRegex\Internal\Match\GroupBy\ByteOffsetsStrategy;
 use TRegx\CleanRegex\Internal\Match\GroupBy\FlatMapStrategy;
 use TRegx\CleanRegex\Internal\Match\GroupBy\MapStrategy;
 use TRegx\CleanRegex\Internal\Match\GroupBy\Strategy;
@@ -27,6 +28,11 @@ public function texts(): array
         return $this->groupBy(new TextsStrategy());
     }
 
+    public function byteOffsets(): array
+    {
+        return $this->groupBy(new ByteOffsetsStrategy());
+    }
+
     public function map(callable $mapper): array
     {
         return $this->groupBy(new MapStrategy($mapper, $this->factory()));

test/Feature/TRegx/CleanRegex/Match/groupBy/MatchPatternTest.php

@@ -23,6 +23,21 @@ public function shouldGroupBy_texts()
         ], $result);
     }
 
+    /**
+     * @test
+     */
+    public function shouldGroupBy_byteOffsets()
+    {
+        // when
+        $result = $this->groupBy()->byteOffsets();
+
+        // then
+        $this->assertEquals([
+            'cm' => [4, 14, 24],
+            'mm' => [9, 19],
+        ], $result);
+    }
+
     /**
      * @test
      */