1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
<?php
/**
* @private
*/
class Less_Exception_Chunk extends Less_Exception_Parser {
protected $parserCurrentIndex = 0;
protected $emitFrom = 0;
protected $input_len;
/**
* @param string $input
* @param Exception|null $previous Previous exception
* @param int|null $index The current parser index
* @param array|null $currentFile The file
* @param int $code The exception code
*/
public function __construct( $input, ?Exception $previous = null, $index = null, $currentFile = null, $code = 0 ) {
$this->message = 'ParseError: Unexpected input'; // default message
$this->index = $index;
$this->currentFile = $currentFile;
$this->input = $input;
$this->input_len = strlen( $input );
$this->Chunks();
$this->genMessage();
}
/**
* See less.js chunks()
* We don't actually need the chunks
*/
protected function Chunks() {
$level = 0;
$parenLevel = 0;
$lastMultiCommentEndBrace = null;
$lastOpening = null;
$lastMultiComment = null;
$lastParen = null;
// phpcs:ignore Generic.CodeAnalysis.JumbledIncrementer
for ( $this->parserCurrentIndex = 0; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++ ) {
$cc = $this->CharCode( $this->parserCurrentIndex );
if ( ( ( $cc >= 97 ) && ( $cc <= 122 ) ) || ( $cc < 34 ) ) {
// a-z or whitespace
continue;
}
switch ( $cc ) {
// (
case 40:
$parenLevel++;
$lastParen = $this->parserCurrentIndex;
break;
// )
case 41:
$parenLevel--;
if ( $parenLevel < 0 ) {
return $this->fail( "missing opening `(`" );
}
break;
// ;
case 59:
// if (!$parenLevel) { $this->emitChunk(); }
break;
// {
case 123:
$level++;
$lastOpening = $this->parserCurrentIndex;
break;
// }
case 125:
$level--;
if ( $level < 0 ) {
return $this->fail( "missing opening `{`" );
}
// if (!$level && !$parenLevel) { $this->emitChunk(); }
break;
// \
case 92:
if ( $this->parserCurrentIndex < $this->input_len - 1 ) {
$this->parserCurrentIndex++;
break;
}
return $this->fail( "unescaped `\\`" );
// ", ' and `
case 34:
case 39:
case 96:
$matched = 0;
$currentChunkStartIndex = $this->parserCurrentIndex;
for ( $this->parserCurrentIndex += 1; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++ ) {
$cc2 = $this->CharCode( $this->parserCurrentIndex );
if ( $cc2 > 96 ) {
continue;
}
if ( $cc2 == $cc ) {
$matched = 1;
break;
}
if ( $cc2 == 92 ) { // \
if ( $this->parserCurrentIndex == $this->input_len - 1 ) {
return $this->fail( "unescaped `\\`" );
}
$this->parserCurrentIndex++;
}
}
if ( $matched ) {
break;
}
return $this->fail( "unmatched `" . chr( $cc ) . "`", $currentChunkStartIndex );
// /, check for comment
case 47:
if ( $parenLevel || ( $this->parserCurrentIndex == $this->input_len - 1 ) ) {
break;
}
$cc2 = $this->CharCode( $this->parserCurrentIndex + 1 );
if ( $cc2 == 47 ) {
// //, find lnfeed
for ( $this->parserCurrentIndex += 2; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++ ) {
$cc2 = $this->CharCode( $this->parserCurrentIndex );
if ( ( $cc2 <= 13 ) && ( ( $cc2 == 10 ) || ( $cc2 == 13 ) ) ) {
break;
}
}
} elseif ( $cc2 == 42 ) {
// /*, find */
$lastMultiComment = $currentChunkStartIndex = $this->parserCurrentIndex;
for ( $this->parserCurrentIndex += 2; $this->parserCurrentIndex < $this->input_len - 1; $this->parserCurrentIndex++ ) {
$cc2 = $this->CharCode( $this->parserCurrentIndex );
if ( $cc2 == 125 ) {
$lastMultiCommentEndBrace = $this->parserCurrentIndex;
}
if ( $cc2 != 42 ) {
continue;
}
if ( $this->CharCode( $this->parserCurrentIndex + 1 ) == 47 ) {
break;
}
}
if ( $this->parserCurrentIndex == $this->input_len - 1 ) {
return $this->fail( "missing closing `*/`", $currentChunkStartIndex );
}
}
break;
// *, check for unmatched */
case 42:
if ( ( $this->parserCurrentIndex < $this->input_len - 1 ) && ( $this->CharCode( $this->parserCurrentIndex + 1 ) == 47 ) ) {
return $this->fail( "unmatched `/*`" );
}
break;
}
}
if ( $level !== 0 ) {
if ( ( $lastMultiComment > $lastOpening ) && ( $lastMultiCommentEndBrace > $lastMultiComment ) ) {
return $this->fail( "missing closing `}` or `*/`", $lastOpening );
} else {
return $this->fail( "missing closing `}`", $lastOpening );
}
} elseif ( $parenLevel !== 0 ) {
return $this->fail( "missing closing `)`", $lastParen );
}
// chunk didn't fail
//$this->emitChunk(true);
}
public function CharCode( $pos ) {
return ord( $this->input[$pos] );
}
public function fail( $msg, $index = null ) {
if ( !$index ) {
$this->index = $this->parserCurrentIndex;
} else {
$this->index = $index;
}
$this->message = 'ParseError: ' . $msg;
}
/*
function emitChunk( $force = false ){
$len = $this->parserCurrentIndex - $this->emitFrom;
if ((($len < 512) && !$force) || !$len) {
return;
}
$chunks[] = substr($this->input, $this->emitFrom, $this->parserCurrentIndex + 1 - $this->emitFrom );
$this->emitFrom = $this->parserCurrentIndex + 1;
}
*/
}
|
