← All changes | back/Libraries/Symfony/CssSelector/Parser/TokenStream.php +0 -171 trunk → 11.1.1 View file →

		@@ -1,171 +1,0 @@
1		-<?php
2		-
3		-/*
4		- * This file is part of the Symfony package.
5		- *
6		- * (c) Fabien Potencier <[email protected]>
7		- *
8		- * For the full copyright and license information, please view the LICENSE
9		- * file that was distributed with this source code.
10		- */
11		-
12		-namespace AcyMailing\Libraries\Symfony\CssSelector\Parser;
13		-
14		-use AcyMailing\Libraries\Symfony\CssSelector\Exception\InternalErrorException;
15		-use AcyMailing\Libraries\Symfony\CssSelector\Exception\SyntaxErrorException;
16		-
17		-/**
18		- * CSS selector token stream.
19		- *
20		- * This component is a port of the Python cssselect library,
21		- * which is copyright Ian Bicking, @see https://github.com/SimonSapin/cssselect.
22		- *
23		- * @author Jean-François Simon <[email protected]>
24		- *
25		- * @internal
26		- */
27		-class TokenStream
28		-{
29		- /**
30		- * @var Token[]
31		- */
32		- private $tokens = [];
33		-
34		- /**
35		- * @var Token[]
36		- */
37		- private $used = [];
38		-
39		- /**
40		- * @var int
41		- */
42		- private $cursor = 0;
43		-
44		- /**
45		- * @var Token|null
46		- */
47		- private $peeked;
48		-
49		- /**
50		- * @var bool
51		- */
52		- private $peeking = false;
53		-
54		- /**
55		- * Pushes a token.
56		- *
57		- * @return $this
58		- */
59		- public function push(Token $token): self
60		- {
61		- $this->tokens[] = $token;
62		-
63		- return $this;
64		- }
65		-
66		- /**
67		- * Freezes stream.
68		- *
69		- * @return $this
70		- */
71		- public function freeze(): self
72		- {
73		- return $this;
74		- }
75		-
76		- /**
77		- * Returns next token.
78		- *
79		- * @throws InternalErrorException If there is no more token
80		- */
81		- public function getNext(): Token
82		- {
83		- if ($this->peeking) {
84		- $this->peeking = false;
85		- $this->used[] = $this->peeked;
86		-
87		- return $this->peeked;
88		- }
89		-
90		- if (!isset($this->tokens[$this->cursor])) {
91		- throw new InternalErrorException('Unexpected token stream end.');
92		- }
93		-
94		- return $this->tokens[$this->cursor++];
95		- }
96		-
97		- /**
98		- * Returns peeked token.
99		- */
100		- public function getPeek(): Token
101		- {
102		- if (!$this->peeking) {
103		- $this->peeked = $this->getNext();
104		- $this->peeking = true;
105		- }
106		-
107		- return $this->peeked;
108		- }
109		-
110		- /**
111		- * Returns used tokens.
112		- *
113		- * @return Token[]
114		- */
115		- public function getUsed(): array
116		- {
117		- return $this->used;
118		- }
119		-
120		- /**
121		- * Returns nex identifier token.
122		- *
123		- * @return string The identifier token value
124		- *
125		- * @throws SyntaxErrorException If next token is not an identifier
126		- */
127		- public function getNextIdentifier(): string
128		- {
129		- $next = $this->getNext();
130		-
131		- if (!$next->isIdentifier()) {
132		- throw SyntaxErrorException::unexpectedToken('identifier', $next);
133		- }
134		-
135		- return $next->getValue();
136		- }
137		-
138		- /**
139		- * Returns nex identifier or star delimiter token.
140		- *
141		- * @return string|null The identifier token value or null if star found
142		- *
143		- * @throws SyntaxErrorException If next token is not an identifier or a star delimiter
144		- */
145		- public function getNextIdentifierOrStar(): ?string
146		- {
147		- $next = $this->getNext();
148		-
149		- if ($next->isIdentifier()) {
150		- return $next->getValue();
151		- }
152		-
153		- if ($next->isDelimiter(['*'])) {
154		- return null;
155		- }
156		-
157		- throw SyntaxErrorException::unexpectedToken('identifier or "*"', $next);
158		- }
159		-
160		- /**
161		- * Skips next whitespace if any.
162		- */
163		- public function skipWhitespace()
164		- {
165		- $peek = $this->getPeek();
166		-
167		- if ($peek->isWhitespace()) {
168		- $this->getNext();
169		- }
170		- }
171		-}