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
209
210
211
212
213
214
215
216
| namespace LLSDN\Token;
enum Type: string
{
// structural tokens
case LeftMapDelimiter = '{';
case RightMapDelimiter = '}';
case LeftArrayDelimiter = '[';
case RightArrayDelimiter = ']';
case ItemSeparator = ',';
case PairSeparator = ':';
// key
case Name = '#'; // <-- symbole bidon
// type tokens
case Undef = '!';
case BooleanTrue = 'true';
case BooleanFalse = 'false';
case Integer = 'i';
case Real = 'r';
case UUID = 'u';
case String = 's';
case RawBinary = 'b';
case Binary16 = 'b16';
case Binary64 = 'b64';
case URI = 'l';
case Date = 'd';
public function endsValue(): bool {
return match($this) {
Type::RightMapDelimiter, Type::RightArrayDelimiter, Type::ItemSeparator => true,
default => false
};
}
public function isStructural(): bool {
return match($this) {
Type::LeftMapDelimiter, Type::RightMapDelimiter,
Type::LeftArrayDelimiter, Type::RightArrayDelimiter,
Type::PairSeparator, Type::ItemSeparator => true,
default => false
};
}
};
abstract class AbstractToken
{
public ?Type $type;
public ?string $value;
}
class Token extends AbstractToken
{
}
class Tokenizer
{
protected \Iterator $chunk;
protected AbstractToken $token;
protected ?string $onHold = null;
public function __construct(\Iterator | Array $chunks, AbstractToken $token = new Token())
{
$this->chunk = is_array($chunks)
? new \ArrayIterator($chunks)
: $chunks;
$this->token = $token;
}
public function tokenize()
{
while($this->chunk->valid()) {
$chunk = $this->chunk->current();
if (in_array($chunk, ["'", '"', 's'], true)) {
$this->onHold = $this->stringContent();
}
else {
yield from match($chunk) {
'{', '}', '[', ']', ',', ':', '!' => $this->noValue(),
'0', 'f', 'false', 'F', 'FALSE' => $this->boolean(false),
'1', 't', 'true', 'T', 'TRUE' => $this->boolean(true),
'b16', 'b64', 'd', 'l' => $this->quoted(),
'b' => $this->rawBinary(),
'i', 'r', 'u' => $this->simple(),
};
}
$this->skipWS();
}
}
protected function noValue()
{
$type = Type::from($this->chunk->current());
if ($this->onHold !== null) {
if ($type->endsValue()) {
yield $this->buildToken(Type::String, $this->onHold);
}
elseif ($type === Type::PairSeparator) {
yield $this->buildToken(Type::Name, $this->onHold);
}
$this->onHold = null;
}
yield $this->buildToken($type);
}
protected function simple()
{
$type = Type::from($this->chunk->current());
$this->chunk->next();
yield $this->buildToken($type, $this->chunk->current());
}
protected function quoted(): \Generator
{
$type = Type::from($this->chunk->current());
$this->chunk->next();
$value = $this->escapedContent();
yield $this->buildToken($type, $value);
}
protected function boolean($value): \Generator
{
yield $value ? $this->buildToken(Type::BooleanTrue, 'true')
: $this->buildToken(Type::BooleanFalse, 'false');
}
protected function RawBinary(): \Generator
{
$this->chunk->next();
yield $this->buildToken(Type::RawBinary, $this->sizedContent());
}
protected function stringContent(): string {
if (in_array($this->chunk->current(), ["'", '"'], true)) {
return $this->escapedContent();
}
else {
$this->chunk->next(); // parenthèse ouvrante
return $this->sizedContent();
}
}
protected function escapedContent(): string {
$delimiter = $this->chunk->current();
$content = '';
do {
$escaped = false;
$this->chunk->next();
if ($this->chunk->current() === '\\') {
$escaped = true;
$this->chunk->next();
if ($this->chunk->current() !== $delimiter) {
$content .= '\\';
}
$content .= $this->chunk->current();
}
elseif ($this->chunk->current() !== $delimiter) {
$content .= $this->chunk->current();
}
} while($this->chunk->current() !== $delimiter || $escaped === true);
return $content;
}
protected function sizedContent(): string {
$this->chunk->next(); // taille
$size = (int)$this->chunk->current();
$this->chunk->next(); // parenthèse fermante
$this->chunk->next(); // délimiteur de début
$content = '';
while(strlen($content) < $size) {
$this->chunk->next();
$content .= $this->chunk->current();
}
$this->chunk->next(); // délimiteur de fin
return $content;
}
protected function skipWS() {
$this->chunk->next();
if ($this->chunk->valid() && preg_match('~\A \s+ \z~ux', $this->chunk->current())) {
$this->chunk->next();
}
}
protected function buildToken(Type $tokenType, ?string $value = null): AbstractToken {
$token = clone $this->token;
$token->type = $tokenType;
$token->value = $value;
return $token;
}
} |
Envoyé par acryline
Répondre avec citation
Partager