Imported code from LiformBundle

.gitignore

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+/vendor/

LICENSE

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+The MIT License (MIT)
+
+Copyright (c) 2016 Nacho Martín
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+Liform
+======
+
+Library to serialize Symfony Forms into [JSON schema](http://json-schema.org/). For use with [liform-react](https://github.com/Limenius/liform-react) or [json-editor](https://github.com/jdorn/json-editor), or any other form generator based in json-schema.
+
+It is used by [LiformBundle](https://github.com/Limenius/LiformBundle) but can be used stand-alone.
+
+It is very annoying to maintain backend forms that match forms in a client technology, such as JavaScript. It is also annoying to maintain a documentation of such forms. And error prone.
+
+LiformBundle generates a JSON schema representation, that serves as documentation and can be used to document, validate your data and, if you want, to generate forms using a generator.
+
+## Installation
+
+Open a command console, enter your project directory and execute the
+following command to download the latest stable version of this library:
+
+    $ composer require limenius/liform
+
+This command requires you to have Composer installed globally, as explained
+in the *installation chapter* of the Composer documentation.
+
+> Liform follows the PSR-4 convention names for its classes, which means you can easily integrate `Liform` classes loading in your own autoloader.
+
+
+## Usage
+
+Serializing a form into JSON Schema:
+
+```php
+        $form = $this->createForm(CarType::class, $car, ['csrf_protection' => false]);
+        $schema = json_encode($liform->transform($form));
+```
+
+And `$schema` will contain a JSON Schema representation such as:
+
+```js
+{  
+   "title":null,
+   "properties":{  
+      "name":{  
+         "type":"string",
+         "title":"Name",
+         "propertyOrder":1
+      },
+      "color":{  
+         "type":"string",
+         "title":"Color",
+         "attr":{  
+            "placeholder":"444444"
+         },
+         "default":"444444",
+         "description":"3 hexadecimal digits",
+         "propertyOrder":2
+      },
+      "drivers":{  
+         "type":"array",
+         "title":"hola",
+         "items":{  
+            "title":"Drivers",
+            "properties":{  
+               "firstName":{  
+                  "type":"string",
+                  "propertyOrder":1
+               },
+               "familyName":{  
+                  "type":"string",
+                  "propertyOrder":2
+               }
+            },
+            "required":[  
+               "firstName",
+               "familyName"
+            ],
+            "type":"object"
+         },
+         "propertyOrder":3
+      }
+   },
+   "required":[  
+      "name",
+      "drivers"
+   ]
+}
+
+```
+
+## License
+
+This library is under the MIT license. See the complete license in the file:
+
+    LICENSE.md
+
+## Acknoledgements
+
+The technique for transforming forms using resolvers and reducers is inspired on [Symfony Console Form](https://github.com/matthiasnoback/symfony-console-form)

composer.json

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+{
+    "name": "limenius/liform",
+    "description": "Library to transform Symfony Forms into Json Schema",
+    "type": "library",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Nacho Martín",
+            "email": "nacho@limenius.com"
+        }
+    ],
+    "autoload": {
+        "psr-4": { "Limenius\\Liform\\": "src" }
+    },
+    "require": {
+        "symfony/form": "~2.3|~3.0"
+    }
+}