<?hh // strict

/**

* Copyright (c) 2015-present, Facebook, Inc.

* All rights reserved.

*

* This source code is licensed under the BSD-style license found in the

* LICENSE file in the root directory of this source tree. An additional grant

* of patent rights can be found in the PATENTS file in the same directory.

*/

/**

* Generate code for a shape. Please don't use this class directly; instead use

* the function codegen_shape. E.g.:

*

* codegen_shape(array('x' => 'int', 'y' => 'int'))

*/

final class CodegenShape

implements ICodeBuilderRenderer {

use HackBuilderRenderer;

private ?string $manualAttrsID = null;

public function __construct(

private array<string, string> $attrs = array(),

) {}

public function setManualAttrsID(?string $id = null): this {

$this->manualAttrsID = $id;

return $this;

}

public function appendToBuilder(HackBuilder $builder): HackBuilder {

$builder

->addLine('shape(')

->indent();

foreach ($this->attrs as $name => $type) {

$builder->addLine("'%s' => %s,", $name, $type);

}

$manual_id = $this->manualAttrsID;

if ($manual_id !== null) {

$builder

->ensureNewLine()

->beginManualSection($manual_id)

->ensureEmptyLine()

->endManualSection();

}

return $builder

->unindent()

->add(')');

}

}

function codegen_shape(array<string, string> $attrs = array()): CodegenShape {

return new CodegenShape($attrs);

}