wt-security / vendor / twig / twig / src / Compiler.php

Compiler.php in WebTotem Security 3.0.1, at vendor/twig/twig/src/Compiler.php

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1	<?php
2
3	/*
4	* This file is part of Twig.
5	*
6	* (c) Fabien Potencier
7	* (c) Armin Ronacher
8	*
9	* For the full copyright and license information, please view the LICENSE
10	* file that was distributed with this source code.
11	*/
12
13	namespace Twig;
14
15	use Twig\Node\Node;
16
17	/**
18	* @author Fabien Potencier <fabien@symfony.com>
19	*/
20	class Compiler
21	{
22	private $lastLine;
23	private $source;
24	private $indentation;
25	private $env;
26	private $debugInfo = [];
27	private $sourceOffset;
28	private $sourceLine;
29	private $varNameSalt = 0;
30
31	public function __construct(Environment $env)
32	{
33	$this->env = $env;
34	}
35
36	public function getEnvironment(): Environment
37	{
38	return $this->env;
39	}
40
41	public function getSource(): string
42	{
43	return $this->source;
44	}
45
46	/**
47	* @return $this
48	*/
49	public function compile(Node $node, int $indentation = 0)
50	{
51	$this->lastLine = null;
52	$this->source = '';
53	$this->debugInfo = [];
54	$this->sourceOffset = 0;
55	// source code starts at 1 (as we then increment it when we encounter new lines)
56	$this->sourceLine = 1;
57	$this->indentation = $indentation;
58	$this->varNameSalt = 0;
59
60	$node->compile($this);
61
62	return $this;
63	}
64
65	/**
66	* @return $this
67	*/
68	public function subcompile(Node $node, bool $raw = true)
69	{
70	if (false === $raw) {
71	$this->source .= str_repeat(' ', $this->indentation * 4);
72	}
73
74	$node->compile($this);
75
76	return $this;
77	}
78
79	/**
80	* Adds a raw string to the compiled code.
81	*
82	* @return $this
83	*/
84	public function raw(string $string)
85	{
86	$this->source .= $string;
87
88	return $this;
89	}
90
91	/**
92	* Writes a string to the compiled code by adding indentation.
93	*
94	* @return $this
95	*/
96	public function write(...$strings)
97	{
98	foreach ($strings as $string) {
99	$this->source .= str_repeat(' ', $this->indentation * 4).$string;
100	}
101
102	return $this;
103	}
104
105	/**
106	* Adds a quoted string to the compiled code.
107	*
108	* @return $this
109	*/
110	public function string(string $value)
111	{
112	$this->source .= sprintf('"%s"', addcslashes($value, "\0\t\"\$\\"));
113
114	return $this;
115	}
116
117	/**
118	* Returns a PHP representation of a given value.
119	*
120	* @return $this
121	*/
122	public function repr($value)
123	{
124	if (\is_int($value) \|\| \is_float($value)) {
125	if (false !== $locale = setlocale(\LC_NUMERIC, '0')) {
126	setlocale(\LC_NUMERIC, 'C');
127	}
128
129	$this->raw(var_export($value, true));
130
131	if (false !== $locale) {
132	setlocale(\LC_NUMERIC, $locale);
133	}
134	} elseif (null === $value) {
135	$this->raw('null');
136	} elseif (\is_bool($value)) {
137	$this->raw($value ? 'true' : 'false');
138	} elseif (\is_array($value)) {
139	$this->raw('array(');
140	$first = true;
141	foreach ($value as $key => $v) {
142	if (!$first) {
143	$this->raw(', ');
144	}
145	$first = false;
146	$this->repr($key);
147	$this->raw(' => ');
148	$this->repr($v);
149	}
150	$this->raw(')');
151	} else {
152	$this->string($value);
153	}
154
155	return $this;
156	}
157
158	/**
159	* @return $this
160	*/
161	public function addDebugInfo(Node $node)
162	{
163	if ($node->getTemplateLine() != $this->lastLine) {
164	$this->write(sprintf("// line %d\n", $node->getTemplateLine()));
165
166	$this->sourceLine += substr_count($this->source, "\n", $this->sourceOffset);
167	$this->sourceOffset = \strlen($this->source);
168	$this->debugInfo[$this->sourceLine] = $node->getTemplateLine();
169
170	$this->lastLine = $node->getTemplateLine();
171	}
172
173	return $this;
174	}
175
176	public function getDebugInfo(): array
177	{
178	ksort($this->debugInfo);
179
180	return $this->debugInfo;
181	}
182
183	/**
184	* @return $this
185	*/
186	public function indent(int $step = 1)
187	{
188	$this->indentation += $step;
189
190	return $this;
191	}
192
193	/**
194	* @return $this
195	*
196	* @throws \LogicException When trying to outdent too much so the indentation would become negative
197	*/
198	public function outdent(int $step = 1)
199	{
200	// can't outdent by more steps than the current indentation level
201	if ($this->indentation < $step) {
202	throw new \LogicException('Unable to call outdent() as the indentation would become negative.');
203	}
204
205	$this->indentation -= $step;
206
207	return $this;
208	}
209
210	public function getVarName(): string
211	{
212	return sprintf('__internal_%s', hash('sha256', __METHOD__.$this->varNameSalt++));
213	}
214	}
215