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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 * Abstract 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 */
26abstract class AbstractGenerator implements GeneratorInterface
27{
28
29    /**
30     * Code indent spaces
31     * @var int
32     */
33    protected int $indent = 4;
34
35    /**
36     * Output string
37     * @var ?string
38     */
39    protected ?string $output = null;
40
41    /**
42     * Set the indent
43     *
44     * @param  int $indent
45     * @return AbstractGenerator
46     */
47    public function setIndent(int $indent): AbstractGenerator
48    {
49        $this->indent = $indent;
50        return $this;
51    }
52
53    /**
54     * Get the indent
55     *
56     * @return int
57     */
58    public function getIndent(): int
59    {
60        return $this->indent;
61    }
62
63    /**
64     * Has indent
65     *
66     * @return bool
67     */
68    public function hasIndent(): bool
69    {
70        return (!empty($this->indent));
71    }
72
73    /**
74     * Print the indent
75     *
76     * @return string
77     */
78    public function printIndent(): string
79    {
80        return str_repeat(' ', $this->indent);
81    }
82
83    /**
84     * Get the output
85     *
86     * @return string
87     */
88    public function getOutput(): string
89    {
90        return $this->output;
91    }
92
93    /**
94     * Has output
95     *
96     * @return bool
97     */
98    public function hasOutput(): bool
99    {
100        return ($this->output !== null);
101    }
102
103    /**
104     * Is rendered (alias to hasOutput())
105     *
106     * @return bool
107     */
108    public function isRendered(): bool
109    {
110        return ($this->output !== null);
111    }
112
113    /**
114     * Render method
115     *
116     * @return string
117     */
118    abstract public function render(): string;
119
120}