13955519945

Committed 19 Mar 2025 07:54PM UTC coverage: 51.499%. Remained the same

Build # 13955519945

Build Type

Pull #1197

github

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web-flow

Commit Message

Merge 0b6cca91e into 45cd62ff0

Pull Request Pull Request #1197: [TASK] Add native type declarations for `CSSFunction`

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/src/Value/Color.php

<?php

declare(strict_types=1);

namespace Sabberworm\CSS\Value;

use Sabberworm\CSS\OutputFormat;
use Sabberworm\CSS\Parsing\ParserState;
use Sabberworm\CSS\Parsing\UnexpectedEOFException;
use Sabberworm\CSS\Parsing\UnexpectedTokenException;

/**
 * `Color's can be input in the form #rrggbb, #rgb or schema(val1, val2, …) but are always stored as an array of
 * ('s' => val1, 'c' => val2, 'h' => val3, …) and output in the second form.
 */
class Color extends CSSFunction
{
    /**
     * @param array<array-key, Value|string> $colorValues
     * @param int<0, max> $lineNumber
     */
    public function __construct(array $colorValues, int $lineNumber = 0)
    {
        parent::__construct(\implode('', \array_keys($colorValues)), $colorValues, ',', $lineNumber);
    }

    /**
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     *
     * @internal since V8.8.0
     */
    public static function parse(ParserState $parserState, bool $ignoreCase = false): CSSFunction
    {
        return
            $parserState->comes('#')
                ? self::parseHexColor($parserState)
                : self::parseColorFunction($parserState);
    }

    /**
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    private static function parseHexColor(ParserState $parserState): CSSFunction
    {
        $parserState->consume('#');
        $hexValue = $parserState->parseIdentifier(false);
        if ($parserState->strlen($hexValue) === 3) {
            $hexValue = $hexValue[0] . $hexValue[0] . $hexValue[1] . $hexValue[1] . $hexValue[2] . $hexValue[2];
        } elseif ($parserState->strlen($hexValue) === 4) {
            $hexValue = $hexValue[0] . $hexValue[0] . $hexValue[1] . $hexValue[1] . $hexValue[2] . $hexValue[2]
                . $hexValue[3] . $hexValue[3];
        }

        if ($parserState->strlen($hexValue) === 8) {
            $colorValues = [
                'r' => new Size(\intval($hexValue[0] . $hexValue[1], 16), null, true, $parserState->currentLine()),
                'g' => new Size(\intval($hexValue[2] . $hexValue[3], 16), null, true, $parserState->currentLine()),
                'b' => new Size(\intval($hexValue[4] . $hexValue[5], 16), null, true, $parserState->currentLine()),
                'a' => new Size(
                    \round(self::mapRange(\intval($hexValue[6] . $hexValue[7], 16), 0, 255, 0, 1), 2),
                    null,
                    true,
                    $parserState->currentLine()
                ),
            ];
        } elseif ($parserState->strlen($hexValue) === 6) {
            $colorValues = [
                'r' => new Size(\intval($hexValue[0] . $hexValue[1], 16), null, true, $parserState->currentLine()),
                'g' => new Size(\intval($hexValue[2] . $hexValue[3], 16), null, true, $parserState->currentLine()),
                'b' => new Size(\intval($hexValue[4] . $hexValue[5], 16), null, true, $parserState->currentLine()),
            ];
        } else {
            throw new UnexpectedTokenException(
                'Invalid hex color value',
                $hexValue,
                'custom',
                $parserState->currentLine()
            );
        }

        return new Color($colorValues, $parserState->currentLine());
    }

    /**
     * @throws UnexpectedEOFException
     * @throws UnexpectedTokenException
     */
    private static function parseColorFunction(ParserState $parserState): CSSFunction
    {
        $colorValues = [];

        $colorMode = $parserState->parseIdentifier(true);
        $parserState->consumeWhiteSpace();
        $parserState->consume('(');

        // CSS Color Module Level 4 says that `rgb` and `rgba` are now aliases; likewise `hsl` and `hsla`.
        // So, attempt to parse with the `a`, and allow for it not being there.
        switch ($colorMode) {
            case 'rgb':
                $colorModeForParsing = 'rgba';
                $mayHaveOptionalAlpha = true;
                break;
            case 'hsl':
                $colorModeForParsing = 'hsla';
                $mayHaveOptionalAlpha = true;
                break;
            case 'rgba':
                // This is handled identically to the following case.
            case 'hsla':
                $colorModeForParsing = $colorMode;
                $mayHaveOptionalAlpha = true;
                break;
            default:
                $colorModeForParsing = $colorMode;
                $mayHaveOptionalAlpha = false;
        }

        $containsVar = false;
        $containsNone = false;
        $isLegacySyntax = false;
        $expectedArgumentCount = $parserState->strlen($colorModeForParsing);
        for ($argumentIndex = 0; $argumentIndex < $expectedArgumentCount; ++$argumentIndex) {
            $parserState->consumeWhiteSpace();
            $valueKey = $colorModeForParsing[$argumentIndex];
            if ($parserState->comes('var')) {
                $colorValues[$valueKey] = CSSFunction::parseIdentifierOrFunction($parserState);
                $containsVar = true;
            } elseif (!$isLegacySyntax && $parserState->comes('none')) {
                $colorValues[$valueKey] = $parserState->parseIdentifier();
                $containsNone = true;
            } else {
                $colorValues[$valueKey] = Size::parse($parserState, true);
            }

            // This must be done first, to consume comments as well, so that the `comes` test will work.
            $parserState->consumeWhiteSpace();

            // With a `var` argument, the function can have fewer arguments.
            // And as of CSS Color Module Level 4, the alpha argument is optional.
            $canCloseNow =
                $containsVar
                || ($mayHaveOptionalAlpha && $argumentIndex >= $expectedArgumentCount - 2);
            if ($canCloseNow && $parserState->comes(')')) {
                break;
            }

            // "Legacy" syntax is comma-delimited, and does not allow the `none` keyword.
            // "Modern" syntax is space-delimited, with `/` as alpha delimiter.
            // They cannot be mixed.
            if ($argumentIndex === 0 && !$containsNone) {
                // An immediate closing parenthesis is not valid.
                if ($parserState->comes(')')) {
                    throw new UnexpectedTokenException(
                        'Color function with no arguments',
                        '',
                        'custom',
                        $parserState->currentLine()
                    );
                }
                $isLegacySyntax = $parserState->comes(',');
            }

            if ($isLegacySyntax && $argumentIndex < ($expectedArgumentCount - 1)) {
                $parserState->consume(',');
            }

            // In the "modern" syntax, the alpha value must be delimited with `/`.
            if (!$isLegacySyntax) {
                if ($containsVar) {
                    // If the `var` substitution encompasses more than one argument,
                    // the alpha deliminator may come at any time.
                    if ($parserState->comes('/')) {
                        $parserState->consume('/');
                    }
                } elseif (($colorModeForParsing[$argumentIndex + 1] ?? '') === 'a') {
                    // Alpha value is the next expected argument.
                    // Since a closing parenthesis was not found, a `/` separator is now required.
                    $parserState->consume('/');
                }
            }
        }
        $parserState->consume(')');

        return
            $containsVar
                ? new CSSFunction($colorMode, \array_values($colorValues), ',', $parserState->currentLine())
                : new Color($colorValues, $parserState->currentLine());
    }

    private static function mapRange(float $value, float $fromMin, float $fromMax, float $toMin, float $toMax): float
    {
        $fromRange = $fromMax - $fromMin;
        $toRange = $toMax - $toMin;
        $multiplier = $toRange / $fromRange;
        $newValue = $value - $fromMin;
        $newValue *= $multiplier;
        return $newValue + $toMin;
    }

    /**
     * @return array<array-key, Value|string>
     */
    public function getColor()
    {
        return $this->components;
    }

    /**
     * @param array<array-key, Value|string> $colorValues
     */
    public function setColor(array $colorValues): void
    {
        $this->setName(\implode('', \array_keys($colorValues)));
        $this->components = $colorValues;
    }

    /**
     * @return non-empty-string
     */
    public function getColorDescription(): string
    {
        return $this->getName();
    }

    public function render(OutputFormat $outputFormat): string
    {
        if ($this->shouldRenderAsHex($outputFormat)) {
            return $this->renderAsHex();
        }

        if ($this->shouldRenderInModernSyntax()) {
            return $this->renderInModernSyntax($outputFormat);
        }

        return parent::render($outputFormat);
    }

    private function shouldRenderAsHex(OutputFormat $outputFormat): bool
    {
        return
            $outputFormat->usesRgbHashNotation()
            && $this->getRealName() === 'rgb'
            && $this->allComponentsAreNumbers();
    }

    /**
     * The function name is a concatenation of the array keys of the components, which is passed to the constructor.
     * However, this can be changed by calling {@see CSSFunction::setName},
     * so is not reliable in situations where it's necessary to determine the function name based on the components.
     */
    private function getRealName(): string
    {
        return \implode('', \array_keys($this->components));
    }

    /**
     * Test whether all color components are absolute numbers (CSS type `number`), not percentages or anything else.
     * If any component is not an instance of `Size`, the method will also return `false`.
     */
    private function allComponentsAreNumbers(): bool
    {
        foreach ($this->components as $component) {
            if (!($component instanceof Size) || $component->getUnit() !== null) {
                return false;
            }
        }

        return true;
    }

    /**
     * Note that this method assumes the following:
     * - The `components` array has keys for `r`, `g` and `b`;
     * - The values in the array are all instances of `Size`.
     *
     * Errors will be triggered or thrown if this is not the case.
     *
     * @return non-empty-string
     */
    private function renderAsHex(): string
    {
        $result = \sprintf(
            '%02x%02x%02x',
            $this->components['r']->getSize(),
            $this->components['g']->getSize(),
            $this->components['b']->getSize()
        );
        $canUseShortVariant = ($result[0] == $result[1]) && ($result[2] == $result[3]) && ($result[4] == $result[5]);

        return '#' . ($canUseShortVariant ? $result[0] . $result[2] . $result[4] : $result);
    }

    /**
     * The "legacy" syntax does not allow RGB colors to have a mixture of `percentage`s and `number`s,
     * and does not allow `none` as any component value.
     *
     * The "legacy" and "modern" monikers are part of the formal W3C syntax.
     * See the following for more information:
     * - {@link
     *     https://developer.mozilla.org/en-US/docs/Web/CSS/color_value/rgb#formal_syntax
     *     Description of the formal syntax for `rgb()` on MDN
     *   };
     * - {@link
     *     https://www.w3.org/TR/css-color-4/#rgb-functions
     *     The same in the CSS Color Module Level 4 W3C Candidate Recommendation Draft
     *   } (as of 13 February 2024, at time of writing).
     */
    private function shouldRenderInModernSyntax(): bool
    {
        if ($this->hasNoneAsComponentValue()) {
            return true;
        }

        if (!$this->colorFunctionMayHaveMixedValueTypes($this->getRealName())) {
            return false;
        }

        $hasPercentage = false;
        $hasNumber = false;
        foreach ($this->components as $key => $value) {
            if ($key === 'a') {
                // Alpha can have units that don't match those of the RGB components in the "legacy" syntax.
                // So it is not necessary to check it.  It's also always last, hence `break` rather than `continue`.
                break;
            }
            if (!($value instanceof Size)) {
                // Unexpected, unknown, or modified via the API
                return false;
            }
            $unit = $value->getUnit();
            // `switch` only does loose comparison
            if ($unit === null) {
                $hasNumber = true;
            } elseif ($unit === '%') {
                $hasPercentage = true;
            } else {
                // Invalid unit
                return false;
            }
        }

        return $hasPercentage && $hasNumber;
    }

    private function hasNoneAsComponentValue(): bool
    {
        return \in_array('none', $this->components, true);
    }

    /**
     * Some color functions, such as `rgb`,
     * may have a mixture of `percentage`, `number`, or possibly other types in their arguments.
     *
     * Note that this excludes the alpha component, which is treated separately.
     */
    private function colorFunctionMayHaveMixedValueTypes(string $function): bool
    {
        $functionsThatMayHaveMixedValueTypes = ['rgb', 'rgba'];

        return \in_array($function, $functionsThatMayHaveMixedValueTypes, true);
    }

    /**
     * @return non-empty-string
     */
    private function renderInModernSyntax(OutputFormat $outputFormat): string
    {
        // Maybe not yet without alpha, but will be...
        $componentsWithoutAlpha = $this->components;
        \end($componentsWithoutAlpha);
        if (\key($componentsWithoutAlpha) === 'a') {
            $alpha = $this->components['a'];
            unset($componentsWithoutAlpha['a']);
        }

        $formatter = $outputFormat->getFormatter();
        $arguments = $formatter->implode(' ', $componentsWithoutAlpha);
        if (isset($alpha)) {
            $separator = $formatter->spaceBeforeListArgumentSeparator('/')
                . '/' . $formatter->spaceAfterListArgumentSeparator('/');
            $arguments = $formatter->implode($separator, [$arguments, $alpha]);
        }

        return $this->getName() . '(' . $arguments . ')';
    }
}

1	<?php
2
3	declare(strict_types=1);
4
5	namespace Sabberworm\CSS\Value;
6
7	use Sabberworm\CSS\OutputFormat;
8	use Sabberworm\CSS\Parsing\ParserState;
9	use Sabberworm\CSS\Parsing\UnexpectedEOFException;
10	use Sabberworm\CSS\Parsing\UnexpectedTokenException;
11
12	/**
13	* `Color's can be input in the form #rrggbb, #rgb or schema(val1, val2, …) but are always stored as an array of
14	* ('s' => val1, 'c' => val2, 'h' => val3, …) and output in the second form.
15	*/
16	class Color extends CSSFunction
17	{
18	/**
19	* @param array<array-key, Value\|string> $colorValues
20	* @param int<0, max> $lineNumber
21	*/
22	public function __construct(array $colorValues, int $lineNumber = 0)	48✔
23	{
24	parent::__construct(\implode('', \array_keys($colorValues)), $colorValues, ',', $lineNumber);	48✔
25	}	48✔
26
27	/**
28	* @throws UnexpectedEOFException
29	* @throws UnexpectedTokenException
30	*
31	* @internal since V8.8.0
32	*/
33	public static function parse(ParserState $parserState, bool $ignoreCase = false): CSSFunction	105✔
34	{
35	return
36	$parserState->comes('#')	105✔
37	? self::parseHexColor($parserState)	11✔
38	: self::parseColorFunction($parserState);	99✔
39	}
40
41	/**
42	* @throws UnexpectedEOFException
43	* @throws UnexpectedTokenException
44	*/
45	private static function parseHexColor(ParserState $parserState): CSSFunction	11✔
46	{
47	$parserState->consume('#');	11✔
48	$hexValue = $parserState->parseIdentifier(false);	11✔
49	if ($parserState->strlen($hexValue) === 3) {	10✔
50	$hexValue = $hexValue[0] . $hexValue[0] . $hexValue[1] . $hexValue[1] . $hexValue[2] . $hexValue[2];	1✔
51	} elseif ($parserState->strlen($hexValue) === 4) {	9✔
52	$hexValue = $hexValue[0] . $hexValue[0] . $hexValue[1] . $hexValue[1] . $hexValue[2] . $hexValue[2]	1✔
53	. $hexValue[3] . $hexValue[3];	1✔
54	}
55
56	if ($parserState->strlen($hexValue) === 8) {	10✔
57	$colorValues = [
58	'r' => new Size(\intval($hexValue[0] . $hexValue[1], 16), null, true, $parserState->currentLine()),	2✔
59	'g' => new Size(\intval($hexValue[2] . $hexValue[3], 16), null, true, $parserState->currentLine()),	2✔
60	'b' => new Size(\intval($hexValue[4] . $hexValue[5], 16), null, true, $parserState->currentLine()),	2✔
61	'a' => new Size(	2✔
62	\round(self::mapRange(\intval($hexValue[6] . $hexValue[7], 16), 0, 255, 0, 1), 2),	2✔
63	null,	2✔
64	true,	2✔
65	$parserState->currentLine()	2✔
66	),
67	];
68	} elseif ($parserState->strlen($hexValue) === 6) {	8✔
69	$colorValues = [
70	'r' => new Size(\intval($hexValue[0] . $hexValue[1], 16), null, true, $parserState->currentLine()),	3✔
71	'g' => new Size(\intval($hexValue[2] . $hexValue[3], 16), null, true, $parserState->currentLine()),	3✔
72	'b' => new Size(\intval($hexValue[4] . $hexValue[5], 16), null, true, $parserState->currentLine()),	3✔
73	];
74	} else {
75	throw new UnexpectedTokenException(	5✔
76	'Invalid hex color value',	5✔
77	$hexValue,
78	'custom',	5✔
79	$parserState->currentLine()	5✔
80	);
81	}
82
83	return new Color($colorValues, $parserState->currentLine());	5✔
84	}
85
86	/**
87	* @throws UnexpectedEOFException
88	* @throws UnexpectedTokenException
89	*/
90	private static function parseColorFunction(ParserState $parserState): CSSFunction	94✔
91	{
92	$colorValues = [];	94✔
93
94	$colorMode = $parserState->parseIdentifier(true);	94✔
95	$parserState->consumeWhiteSpace();	94✔
96	$parserState->consume('(');	94✔
97
98	// CSS Color Module Level 4 says that `rgb` and `rgba` are now aliases; likewise `hsl` and `hsla`.
99	// So, attempt to parse with the `a`, and allow for it not being there.
100	switch ($colorMode) {	94✔
101	case 'rgb':	94✔
102	$colorModeForParsing = 'rgba';	45✔
103	$mayHaveOptionalAlpha = true;	45✔
104	break;	45✔
105	case 'hsl':	49✔
106	$colorModeForParsing = 'hsla';	22✔
107	$mayHaveOptionalAlpha = true;	22✔
108	break;	22✔
109	case 'rgba':	27✔
110	// This is handled identically to the following case.
111	case 'hsla':	3✔
112	$colorModeForParsing = $colorMode;	27✔
113	$mayHaveOptionalAlpha = true;	27✔
114	break;	27✔
115	default:
116	$colorModeForParsing = $colorMode;	×
117	$mayHaveOptionalAlpha = false;	×
118	}
119
120	$containsVar = false;	94✔
121	$containsNone = false;	94✔
122	$isLegacySyntax = false;	94✔
123	$expectedArgumentCount = $parserState->strlen($colorModeForParsing);	94✔
124	for ($argumentIndex = 0; $argumentIndex < $expectedArgumentCount; ++$argumentIndex) {	94✔
125	$parserState->consumeWhiteSpace();	94✔
126	$valueKey = $colorModeForParsing[$argumentIndex];	94✔
127	if ($parserState->comes('var')) {	94✔
128	$colorValues[$valueKey] = CSSFunction::parseIdentifierOrFunction($parserState);	29✔
129	$containsVar = true;	29✔
130	} elseif (!$isLegacySyntax && $parserState->comes('none')) {	93✔
131	$colorValues[$valueKey] = $parserState->parseIdentifier();	10✔
132	$containsNone = true;	10✔
133	} else {
134	$colorValues[$valueKey] = Size::parse($parserState, true);	93✔
135	}
136
137	// This must be done first, to consume comments as well, so that the `comes` test will work.
138	$parserState->consumeWhiteSpace();	94✔
139
140	// With a `var` argument, the function can have fewer arguments.
141	// And as of CSS Color Module Level 4, the alpha argument is optional.
142	$canCloseNow =
143	$containsVar	94✔
144	\|\| ($mayHaveOptionalAlpha && $argumentIndex >= $expectedArgumentCount - 2);	94✔
145	if ($canCloseNow && $parserState->comes(')')) {	94✔
146	break;	72✔
147	}
148
149	// "Legacy" syntax is comma-delimited, and does not allow the `none` keyword.
150	// "Modern" syntax is space-delimited, with `/` as alpha delimiter.
151	// They cannot be mixed.
152	if ($argumentIndex === 0 && !$containsNone) {	93✔
153	// An immediate closing parenthesis is not valid.
154	if ($parserState->comes(')')) {	89✔
155	throw new UnexpectedTokenException(	4✔
156	'Color function with no arguments',	4✔
157	'',	4✔
158	'custom',	4✔
159	$parserState->currentLine()	4✔
160	);
161	}
162	$isLegacySyntax = $parserState->comes(',');	85✔
163	}
164
165	if ($isLegacySyntax && $argumentIndex < ($expectedArgumentCount - 1)) {	89✔
166	$parserState->consume(',');	44✔
167	}
168
169	// In the "modern" syntax, the alpha value must be delimited with `/`.
170	if (!$isLegacySyntax) {	89✔
171	if ($containsVar) {	45✔
172	// If the `var` substitution encompasses more than one argument,
173	// the alpha deliminator may come at any time.
174	if ($parserState->comes('/')) {	9✔
175	$parserState->consume('/');	9✔
176	}
177	} elseif (($colorModeForParsing[$argumentIndex + 1] ?? '') === 'a') {	40✔
178	// Alpha value is the next expected argument.
179	// Since a closing parenthesis was not found, a `/` separator is now required.
180	$parserState->consume('/');	17✔
181	}
182	}
183	}
184	$parserState->consume(')');	76✔
185
186	return
187	$containsVar	72✔
188	? new CSSFunction($colorMode, \array_values($colorValues), ',', $parserState->currentLine())	29✔
189	: new Color($colorValues, $parserState->currentLine());	72✔
190	}
191
192	private static function mapRange(float $value, float $fromMin, float $fromMax, float $toMin, float $toMax): float	2✔
193	{
194	$fromRange = $fromMax - $fromMin;	2✔
195	$toRange = $toMax - $toMin;	2✔
196	$multiplier = $toRange / $fromRange;	2✔
197	$newValue = $value - $fromMin;	2✔
198	$newValue *= $multiplier;	2✔
199	return $newValue + $toMin;	2✔
200	}
201
202	/**
203	* @return array<array-key, Value\|string>
204	*/
205	public function getColor()	×
206	{
207	return $this->components;	×
208	}
209
210	/**
211	* @param array<array-key, Value\|string> $colorValues
212	*/
213	public function setColor(array $colorValues): void	×
214	{
215	$this->setName(\implode('', \array_keys($colorValues)));	×
216	$this->components = $colorValues;	×
217	}	×
218
219	/**
220	* @return non-empty-string
221	*/
NEW 222	public function getColorDescription(): string	×
223	{
224	return $this->getName();	×
225	}
226
227	public function render(OutputFormat $outputFormat): string	48✔
228	{
229	if ($this->shouldRenderAsHex($outputFormat)) {	48✔
230	return $this->renderAsHex();	7✔
231	}
232
233	if ($this->shouldRenderInModernSyntax()) {	41✔
234	return $this->renderInModernSyntax($outputFormat);	17✔
235	}
236
237	return parent::render($outputFormat);	24✔
238	}
239
240	private function shouldRenderAsHex(OutputFormat $outputFormat): bool	48✔
241	{
242	return
243	$outputFormat->usesRgbHashNotation()	48✔
244	&& $this->getRealName() === 'rgb'	48✔
245	&& $this->allComponentsAreNumbers();	48✔
246	}
247
248	/**
249	* The function name is a concatenation of the array keys of the components, which is passed to the constructor.
250	* However, this can be changed by calling {@see CSSFunction::setName},
251	* so is not reliable in situations where it's necessary to determine the function name based on the components.
252	*/
253	private function getRealName(): string	48✔
254	{
255	return \implode('', \array_keys($this->components));	48✔
256	}
257
258	/**
259	* Test whether all color components are absolute numbers (CSS type `number`), not percentages or anything else.
260	* If any component is not an instance of `Size`, the method will also return `false`.
261	*/
262	private function allComponentsAreNumbers(): bool	18✔
263	{
264	foreach ($this->components as $component) {	18✔
265	if (!($component instanceof Size) \|\| $component->getUnit() !== null) {	18✔
266	return false;	11✔
267	}
268	}
269
270	return true;	7✔
271	}
272
273	/**
274	* Note that this method assumes the following:
275	* - The `components` array has keys for `r`, `g` and `b`;
276	* - The values in the array are all instances of `Size`.
277	*
278	* Errors will be triggered or thrown if this is not the case.
279	*
280	* @return non-empty-string
281	*/
282	private function renderAsHex(): string	7✔
283	{
284	$result = \sprintf(	7✔
285	'%02x%02x%02x',	7✔
286	$this->components['r']->getSize(),	7✔
287	$this->components['g']->getSize(),	7✔
288	$this->components['b']->getSize()	7✔
289	);
290	$canUseShortVariant = ($result[0] == $result[1]) && ($result[2] == $result[3]) && ($result[4] == $result[5]);	7✔
291
292	return '#' . ($canUseShortVariant ? $result[0] . $result[2] . $result[4] : $result);	7✔
293	}
294
295	/**
296	* The "legacy" syntax does not allow RGB colors to have a mixture of `percentage`s and `number`s,
297	* and does not allow `none` as any component value.
298	*
299	* The "legacy" and "modern" monikers are part of the formal W3C syntax.
300	* See the following for more information:
301	* - {@link
302	* https://developer.mozilla.org/en-US/docs/Web/CSS/color_value/rgb#formal_syntax
303	* Description of the formal syntax for `rgb()` on MDN
304	* };
305	* - {@link
306	* https://www.w3.org/TR/css-color-4/#rgb-functions
307	* The same in the CSS Color Module Level 4 W3C Candidate Recommendation Draft
308	* } (as of 13 February 2024, at time of writing).
309	*/
310	private function shouldRenderInModernSyntax(): bool	41✔
311	{
312	if ($this->hasNoneAsComponentValue()) {	41✔
313	return true;	8✔
314	}
315
316	if (!$this->colorFunctionMayHaveMixedValueTypes($this->getRealName())) {	33✔
317	return false;	11✔
318	}
319
320	$hasPercentage = false;	22✔
321	$hasNumber = false;	22✔
322	foreach ($this->components as $key => $value) {	22✔
323	if ($key === 'a') {	22✔
324	// Alpha can have units that don't match those of the RGB components in the "legacy" syntax.
325	// So it is not necessary to check it. It's also always last, hence `break` rather than `continue`.
326	break;	14✔
327	}
328	if (!($value instanceof Size)) {	22✔
329	// Unexpected, unknown, or modified via the API
330	return false;	×
331	}
332	$unit = $value->getUnit();	22✔
333	// `switch` only does loose comparison
334	if ($unit === null) {	22✔
335	$hasNumber = true;	16✔
336	} elseif ($unit === '%') {	15✔
337	$hasPercentage = true;	15✔
338	} else {
339	// Invalid unit
340	return false;	×
341	}
342	}
343
344	return $hasPercentage && $hasNumber;	22✔
345	}
346
347	private function hasNoneAsComponentValue(): bool	41✔
348	{
349	return \in_array('none', $this->components, true);	41✔
350	}
351
352	/**
353	* Some color functions, such as `rgb`,
354	* may have a mixture of `percentage`, `number`, or possibly other types in their arguments.
355	*
356	* Note that this excludes the alpha component, which is treated separately.
357	*/
358	private function colorFunctionMayHaveMixedValueTypes(string $function): bool	33✔
359	{
360	$functionsThatMayHaveMixedValueTypes = ['rgb', 'rgba'];	33✔
361
362	return \in_array($function, $functionsThatMayHaveMixedValueTypes, true);	33✔
363	}
364
365	/**
366	* @return non-empty-string
367	*/
368	private function renderInModernSyntax(OutputFormat $outputFormat): string	17✔
369	{
370	// Maybe not yet without alpha, but will be...
371	$componentsWithoutAlpha = $this->components;	17✔
372	\end($componentsWithoutAlpha);	17✔
373	if (\key($componentsWithoutAlpha) === 'a') {	17✔
374	$alpha = $this->components['a'];	5✔
375	unset($componentsWithoutAlpha['a']);	5✔
376	}
377
378	$formatter = $outputFormat->getFormatter();	17✔
379	$arguments = $formatter->implode(' ', $componentsWithoutAlpha);	17✔
380	if (isset($alpha)) {	17✔
381	$separator = $formatter->spaceBeforeListArgumentSeparator('/')	5✔
382	. '/' . $formatter->spaceAfterListArgumentSeparator('/');	5✔
383	$arguments = $formatter->implode($separator, [$arguments, $alpha]);	5✔
384	}
385
386	return $this->getName() . '(' . $arguments . ')';	17✔
387	}
388	}

MyIntervals / PHP-CSS-Parser / 13955519945

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