Add table of contents to md gen

CHANGELOG.md

@@ -4,6 +4,11 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.2.36] - 2022-09-16
+
+### Added
+- Table of contents in Markdown generator.
+
 ## [0.2.35] - 2022-01-02
 
 ### Fixes
@@ -103,6 +108,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 - Description trimming bug.
 
+[0.2.36]: https://github.com/swaggest/php-code-builder/compare/v0.2.35...v0.2.36
 [0.2.35]: https://github.com/swaggest/php-code-builder/compare/v0.2.34...v0.2.35
 [0.2.34]: https://github.com/swaggest/php-code-builder/compare/v0.2.33...v0.2.34
 [0.2.33]: https://github.com/swaggest/php-code-builder/compare/v0.2.32...v0.2.33

src/Markdown/TypeBuilder.php

@@ -21,6 +21,12 @@ class TypeBuilder
 
     public $addNamePrefix = '';
 
+    /**
+     * Map of type name to type doc.
+     * @var array<string,string>
+     */
+    public $types = [];
+
     public $file = '';
 
     public function __construct()
@@ -223,7 +229,7 @@ public function getTypeString($schema, $path = '')
         }
 
         if ($schema->format !== null) {
-            $or []= 'Format: `' . $schema->format . '`';
+            $or [] = 'Format: `' . $schema->format . '`';
         }
 
         $res = '';
@@ -421,11 +427,34 @@ private function makeTypeDef(Schema $schema, $path)
 
 MD;
 
+        $this->types[$typeName] = $res;
         $this->file .= $res;
 
         return $typeName;
     }
 
+    public function sortTypes()
+    {
+        ksort($this->types);
+    }
+
+    public function tableOfContents()
+    {
+        if (count($this->types) === 0) {
+            return '';
+        }
+
+        $res = '# Types' . "\n\n";
+
+        foreach ($this->types as $name => $doc) {
+            $res .= '  * ' . $name . "\n";
+        }
+
+        $res .= "\n\n";
+
+        return $res;
+    }
+
     private function description(Schema $schema)
     {
         $res = str_replace("\n", " ", $schema->title . $schema->description);

tests/src/PHPUnit/Markdown/MarkdownTest.php

@@ -69,5 +69,17 @@ public function testJsonSchema()
 
 MD
             , $tb->file);
+
+        $tb->sortTypes();
+        $this->assertSame(<<<'MD'
+# Types
+
+  * [`Person`](#person)
+  * [`Unit`](#unit)
+
+
+
+MD
+            , $tb->tableOfContents());
     }
 }