|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
/** |
|
4
|
|
|
* @package s9e\SourceOptimizer |
|
5
|
|
|
* @copyright Copyright (c) 2014-2017 The s9e Authors |
|
6
|
|
|
* @license http://www.opensource.org/licenses/mit-license.php The MIT License |
|
7
|
|
|
*/ |
|
8
|
|
|
namespace s9e\SourceOptimizer\Passes; |
|
9
|
|
|
|
|
10
|
|
|
use s9e\SourceOptimizer\Helper; |
|
11
|
|
|
use s9e\SourceOptimizer\Pass; |
|
12
|
|
|
use s9e\SourceOptimizer\TokenStream; |
|
13
|
|
|
|
|
14
|
|
|
class RemoveComments extends Pass |
|
15
|
|
|
{ |
|
16
|
|
|
/** |
|
17
|
|
|
* @var string[] List of annotations to preserve |
|
18
|
|
|
*/ |
|
19
|
|
|
public $preserveAnnotations = [ |
|
20
|
|
|
'license' |
|
21
|
|
|
]; |
|
22
|
|
|
|
|
23
|
|
|
/** |
|
24
|
|
|
* @var bool Whether to remove DocBlock comments |
|
25
|
|
|
*/ |
|
26
|
|
|
public $removeDocBlocks = true; |
|
27
|
|
|
|
|
28
|
|
|
/** |
|
29
|
|
|
* @var bool Whether to remove "C style" comments |
|
30
|
|
|
*/ |
|
31
|
|
|
public $removeMultiLineComments = true; |
|
32
|
|
|
|
|
33
|
|
|
/** |
|
34
|
|
|
* @var bool Whether to remove "one-line" comments |
|
35
|
|
|
*/ |
|
36
|
|
|
public $removeSingleLineComments = true; |
|
37
|
|
|
|
|
38
|
|
|
/** |
|
39
|
|
|
* @var TokenStream Token stream of the source being processed |
|
40
|
|
|
*/ |
|
41
|
|
|
protected $stream; |
|
42
|
|
|
|
|
43
|
|
|
/** |
|
44
|
|
|
* {@inheritdoc} |
|
45
|
|
|
*/ |
|
46
|
13 |
|
public function optimize(TokenStream $stream) |
|
47
|
|
|
{ |
|
48
|
13 |
|
$this->stream = $stream; |
|
49
|
13 |
|
if ($this->removeDocBlocks) |
|
50
|
|
|
{ |
|
51
|
12 |
|
$this->removeDocBlocks(); |
|
52
|
|
|
} |
|
53
|
13 |
|
if ($this->removeMultiLineComments || $this->removeSingleLineComments) |
|
54
|
|
|
{ |
|
55
|
13 |
|
$this->removeComments(); |
|
56
|
|
|
} |
|
57
|
13 |
|
Helper::mergeWhitespace($stream); |
|
58
|
13 |
|
} |
|
59
|
|
|
|
|
60
|
|
|
/** |
|
61
|
|
|
* Generate a regexp that matches preserved annotations |
|
62
|
|
|
* |
|
63
|
|
|
* @return string |
|
64
|
|
|
*/ |
|
65
|
12 |
|
protected function getRegexp() |
|
66
|
|
|
{ |
|
67
|
12 |
|
if (empty($this->preserveAnnotations)) |
|
68
|
|
|
{ |
|
69
|
|
|
return '((?!))'; |
|
70
|
|
|
} |
|
71
|
|
|
|
|
72
|
12 |
|
return '(@(?:' . implode('|', $this->preserveAnnotations) . '))'; |
|
73
|
|
|
} |
|
74
|
|
|
|
|
75
|
|
|
/** |
|
76
|
|
|
* Remove all docblocks tokens from given stream |
|
77
|
|
|
* |
|
78
|
|
|
* @return void |
|
79
|
|
|
*/ |
|
80
|
12 |
|
protected function removeDocBlocks() |
|
81
|
|
|
{ |
|
82
|
12 |
|
$regexp = $this->getRegexp(); |
|
83
|
12 |
|
$this->stream->reset(); |
|
84
|
12 |
|
while ($this->stream->skipTo(T_DOC_COMMENT)) |
|
85
|
|
|
{ |
|
86
|
3 |
|
$docblock = $this->stream->currentText(); |
|
87
|
3 |
|
if (strpos($docblock, '@') !== false && preg_match($regexp, $docblock)) |
|
88
|
|
|
{ |
|
89
|
2 |
|
continue; |
|
90
|
|
|
} |
|
91
|
|
|
|
|
92
|
1 |
|
$this->removeComment(); |
|
93
|
|
|
} |
|
94
|
12 |
|
} |
|
95
|
|
|
|
|
96
|
|
|
/** |
|
97
|
|
|
* Remove current comment token from given stream |
|
98
|
|
|
* |
|
99
|
|
|
* @return void |
|
100
|
|
|
*/ |
|
101
|
8 |
|
protected function removeComment() |
|
102
|
|
|
{ |
|
103
|
8 |
|
$offset = $this->stream->key(); |
|
104
|
8 |
|
$this->stream->previous(); |
|
105
|
8 |
|
if ($this->stream->is(T_WHITESPACE)) |
|
106
|
|
|
{ |
|
107
|
6 |
|
$ws = preg_replace('(\\n[ \\t]*$)', '', $this->stream->currentText()); |
|
108
|
6 |
|
if ($ws === '') |
|
109
|
|
|
{ |
|
110
|
6 |
|
$this->stream->remove(); |
|
111
|
|
|
} |
|
112
|
|
|
else |
|
113
|
|
|
{ |
|
114
|
|
|
$this->stream->replace([T_WHITESPACE, $ws]); |
|
115
|
|
|
} |
|
116
|
|
|
} |
|
117
|
|
|
|
|
118
|
8 |
|
$this->stream->seek($offset); |
|
119
|
8 |
|
if ($this->stream->canRemoveCurrentToken()) |
|
120
|
|
|
{ |
|
121
|
7 |
|
$this->stream->remove(); |
|
122
|
|
|
} |
|
123
|
|
|
else |
|
124
|
|
|
{ |
|
125
|
1 |
|
$this->stream->replace([T_WHITESPACE, ' ']); |
|
126
|
|
|
} |
|
127
|
8 |
|
} |
|
128
|
|
|
|
|
129
|
|
|
/** |
|
130
|
|
|
* Remove single-line and/or multi-line comments from given stream |
|
131
|
|
|
* |
|
132
|
|
|
* @return void |
|
133
|
|
|
*/ |
|
134
|
13 |
|
protected function removeComments() |
|
135
|
|
|
{ |
|
136
|
13 |
|
$this->stream->reset(); |
|
137
|
13 |
|
while ($this->stream->skipTo(T_COMMENT)) |
|
138
|
|
|
{ |
|
139
|
9 |
|
$comment = $this->stream->currentText(); |
|
140
|
9 |
|
if ($comment[1] === '/' && !$this->removeSingleLineComments) |
|
141
|
|
|
{ |
|
142
|
1 |
|
continue; |
|
143
|
|
|
} |
|
144
|
8 |
|
if ($comment[1] === '*' && !$this->removeMultiLineComments) |
|
145
|
|
|
{ |
|
146
|
1 |
|
continue; |
|
147
|
|
|
} |
|
148
|
|
|
|
|
149
|
7 |
|
$this->removeComment(); |
|
150
|
|
|
} |
|
151
|
|
|
} |
|
152
|
|
|
} |
s9e /
SourceOptimizer
