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1<?php
2/**
3 * Pop PHP Framework (http://www.popphp.org/)
4 *
5 * @link       https://github.com/popphp/popphp-framework
6 * @author     Nick Sagona, III <dev@nolainteractive.com>
7 * @copyright  Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com)
8 * @license    http://www.popphp.org/license     New BSD License
9 */
10
11/**
12 * @namespace
13 */
14namespace Pop\Code\Generator;
15
16/**
17 * Function generator class
18 *
19 * @category   Pop
20 * @package    Pop\Code
21 * @author     Nick Sagona, III <dev@nolainteractive.com>
22 * @copyright  Copyright (c) 2009-2024 NOLA Interactive, LLC. (http://www.nolainteractive.com)
23 * @license    http://www.popphp.org/license     New BSD License
24 * @version    5.0.0
25 */
26class FunctionGenerator extends AbstractGenerator
27{
28
29    use Traits\NameTrait, Traits\DocblockTrait, Traits\FunctionTrait, Traits\BodyTrait;
30
31    /**
32     * Function interface flag
33     * @var bool
34     */
35    protected bool $closure = false;
36
37    /**
38     * Function body
39     * @var ?string
40     */
41    protected ?string $body = null;
42
43    /**
44     * Function indent
45     * @var int
46     */
47    protected int $indent = 0;
48
49    /**
50     * Constructor
51     *
52     * Instantiate the function generator object
53     *
54     * @param  ?string $name
55     * @param  bool    $closure
56     */
57    public function __construct(?string $name = null, bool $closure = false)
58    {
59        if ($name !== null) {
60            $this->setName($name);
61        }
62        $this->setAsClosure($closure);
63    }
64
65    /**
66     * Set the function closure flag
67     *
68     * @param  bool $closure
69     * @return FunctionGenerator
70     */
71    public function setAsClosure(bool $closure = false): FunctionGenerator
72    {
73        $this->closure = $closure;
74        return $this;
75    }
76
77    /**
78     * Get the function closure flag
79     *
80     * @return bool
81     */
82    public function isClosure(): bool
83    {
84        return $this->closure;
85    }
86
87    /**
88     * Render function
89     *
90     * @throws Exception
91     * @return string
92     */
93    public function render(): string
94    {
95        if ($this->name === null) {
96            throw new Exception('Error: The function name has not been set.');
97        }
98
99        $args = $this->formatArguments();
100
101        $this->output = PHP_EOL . (($this->docblock !== null) ? $this->docblock->render() : null);
102        if ($this->closure) {
103            $this->output .= $this->printIndent() . '$' . $this->name .' = function(' . $args . ')';
104        } else {
105            $this->output .= $this->printIndent() . 'function ' . $this->name . '(' . $args . ')';
106        }
107
108        if ($this->hasReturnTypes()) {
109            $this->output .= ': ' . implode('|', $this->returnTypes);
110        }
111
112        $this->output .= PHP_EOL . $this->printIndent() . '{' . PHP_EOL;
113        $this->output .= $this->body. PHP_EOL;
114        $this->output .= $this->printIndent() . '}';
115
116        if ($this->closure) {
117            $this->output .= ';';
118        }
119
120        $this->output .= PHP_EOL;
121
122        return $this->output;
123    }
124
125    /**
126     * Print function
127     *
128     * @return string
129     */
130    public function __toString(): string
131    {
132        return $this->render();
133    }
134
135}