yatra / vendor / sabberworm / php-css-parser / src / Value / CalcFunction.php

CalcFunction.php in Yatra – Travel Booking & Tour Operator Software 3.0.14.1, at vendor/sabberworm/php-css-parser/src/Value/CalcFunction.php

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1	<?php
2
3	namespace Sabberworm\CSS\Value;
4
5	use Sabberworm\CSS\Parsing\ParserState;
6	use Sabberworm\CSS\Parsing\UnexpectedEOFException;
7	use Sabberworm\CSS\Parsing\UnexpectedTokenException;
8
9	/**
10	* Support for `-webkit-calc` and `-moz-calc` is deprecated in version 8.8.0, and will be removed in version 9.0.0.
11	*/
12	class CalcFunction extends CSSFunction
13	{
14	/**
15	* @var int
16	*
17	* @internal
18	*/
19	const T_OPERAND = 1;
20
21	/**
22	* @var int
23	*
24	* @internal
25	*/
26	const T_OPERATOR = 2;
27
28	/**
29	* @param ParserState $oParserState
30	* @param bool $bIgnoreCase
31	*
32	* @return CalcFunction
33	*
34	* @throws UnexpectedTokenException
35	* @throws UnexpectedEOFException
36	*
37	* @internal since V8.8.0
38	*/
39	public static function parse(ParserState $oParserState, $bIgnoreCase = false)
40	{
41	$aOperators = ['+', '-', '*', '/'];
42	$sFunction = $oParserState->parseIdentifier();
43	if ($oParserState->peek() != '(') {
44	// Found ; or end of line before an opening bracket
45	throw new UnexpectedTokenException('(', $oParserState->peek(), 'literal', $oParserState->currentLine());
46	} elseif (!in_array($sFunction, ['calc', '-moz-calc', '-webkit-calc'])) {
47	// Found invalid calc definition. Example calc (...
48	throw new UnexpectedTokenException('calc', $sFunction, 'literal', $oParserState->currentLine());
49	}
50	$oParserState->consume('(');
51	$oCalcList = new CalcRuleValueList($oParserState->currentLine());
52	$oList = new RuleValueList(',', $oParserState->currentLine());
53	$iNestingLevel = 0;
54	$iLastComponentType = null;
55	while (!$oParserState->comes(')') \|\| $iNestingLevel > 0) {
56	if ($oParserState->isEnd() && $iNestingLevel === 0) {
57	break;
58	}
59
60	$oParserState->consumeWhiteSpace();
61	if ($oParserState->comes('(')) {
62	$iNestingLevel++;
63	$oCalcList->addListComponent($oParserState->consume(1));
64	$oParserState->consumeWhiteSpace();
65	continue;
66	} elseif ($oParserState->comes(')')) {
67	$iNestingLevel--;
68	$oCalcList->addListComponent($oParserState->consume(1));
69	$oParserState->consumeWhiteSpace();
70	continue;
71	}
72	if ($iLastComponentType != CalcFunction::T_OPERAND) {
73	$oVal = Value::parsePrimitiveValue($oParserState);
74	$oCalcList->addListComponent($oVal);
75	$iLastComponentType = CalcFunction::T_OPERAND;
76	} else {
77	if (in_array($oParserState->peek(), $aOperators)) {
78	if (($oParserState->comes('-') \|\| $oParserState->comes('+'))) {
79	if (
80	$oParserState->peek(1, -1) != ' '
81	\|\| !($oParserState->comes('- ')
82	\|\| $oParserState->comes('+ '))
83	) {
84	throw new UnexpectedTokenException(
85	" {$oParserState->peek()} ",
86	$oParserState->peek(1, -1) . $oParserState->peek(2),
87	'literal',
88	$oParserState->currentLine()
89	);
90	}
91	}
92	$oCalcList->addListComponent($oParserState->consume(1));
93	$iLastComponentType = CalcFunction::T_OPERATOR;
94	} else {
95	throw new UnexpectedTokenException(
96	sprintf(
97	'Next token was expected to be an operand of type %s. Instead "%s" was found.',
98	implode(', ', $aOperators),
99	$oParserState->peek()
100	),
101	'',
102	'custom',
103	$oParserState->currentLine()
104	);
105	}
106	}
107	$oParserState->consumeWhiteSpace();
108	}
109	$oList->addListComponent($oCalcList);
110	if (!$oParserState->isEnd()) {
111	$oParserState->consume(')');
112	}
113	return new CalcFunction($sFunction, $oList, ',', $oParserState->currentLine());
114	}
115	}
116