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<?php
namespace LesserPHP\Functions;
use Exception;
use LesserPHP\Constants;
use LesserPHP\Utils\Asserts;
use LesserPHP\Utils\Util;
/**
* Implements the math functions for LESS
*
* @link https://lesscss.org/functions/#math-functions
*/
class Math extends AbstractFunctionCollection
{
/** @inheritdoc */
public function getFunctions(): array
{
return [
'ceil' => [$this, 'ceil'],
'floor' => [$this, 'floor'],
'percentage' => [$this, 'percentage'],
'round' => [$this, 'round'],
'sqrt' => [$this, 'sqrt'],
'abs' => [$this, 'abs'],
'sin' => [$this, 'sin'],
'asin' => [$this, 'asin'],
'cos' => [$this, 'cos'],
'acos' => [$this, 'acos'],
'tan' => [$this, 'tan'],
'atan' => [$this, 'atan'],
'pi' => [$this, 'pi'],
'pow' => [$this, 'pow'],
'mod' => [$this, 'mod'],
'min' => [$this, 'min'],
'max' => [$this, 'max'],
];
}
/**
* Rounds up to the next highest integer
*
* @link https://lesscss.org/functions/#math-functions-ceil
* @throws Exception
*/
public function ceil(array $arg): array
{
$value = Asserts::assertNumber($arg);
return ['number', ceil($value), $arg[2]];
}
/**
* Rounds down to the next lowest integer
*
* @link https://lesscss.org/functions/#math-functions-floor
* @throws Exception
*/
public function floor(array $arg): array
{
$value = Asserts::assertNumber($arg);
return ['number', floor($value), $arg[2]];
}
/**
* Converts a floating point number into a percentage string
*
* @link https://lesscss.org/functions/#math-functions-percentage
* @throws Exception
*/
public function percentage(array $arg): array
{
$num = Asserts::assertNumber($arg);
return ['number', $num * 100, '%'];
}
/**
* Applies rounding
*
* @link https://lesscss.org/functions/#math-functions-round
* @throws Exception
*/
public function round(array $arg): array
{
if ($arg[0] != 'list') {
$value = Asserts::assertNumber($arg);
return ['number', round($value), $arg[2]];
} else {
$value = Asserts::assertNumber($arg[2][0]);
$precision = Asserts::assertNumber($arg[2][1]);
return ['number', round($value, $precision), $arg[2][0][2]];
}
}
/**
* Calculates square root of a number
*
* @link https://lesscss.org/functions/#math-functions-sqrt
* @throws Exception
*/
public function sqrt(array $num): float
{
return sqrt(Asserts::assertNumber($num));
}
/**
* Calculates absolute value of a number. Keeps units as they are.
*
* @link https://lesscss.org/functions/#math-functions-abs
* @throws Exception
*/
public function abs(array $num): array
{
return ['number', abs(Asserts::assertNumber($num)), $num[2]];
}
/**
* Calculates sine function
*
* @link https://lesscss.org/functions/#math-functions-sin
* @throws Exception
*/
public function sin(array $num): float
{
return sin(Asserts::assertNumber($num));
}
/**
* Calculates arcsine function
*
* @link https://lesscss.org/functions/#math-functions-asin
* @throws Exception
*/
public function asin(array $num): array
{
$num = asin(Asserts::assertNumber($num));
return ['number', $num, 'rad'];
}
/**
* Calculates cosine function
*
* @link https://lesscss.org/functions/#math-functions-cos
* @throws Exception
*/
public function cos(array $num): float
{
return cos(Asserts::assertNumber($num));
}
/**
* Calculates arccosine function
*
* @link https://lesscss.org/functions/#math-functions-acos
* @throws Exception
*/
public function acos(array $num): array
{
$num = acos(Asserts::assertNumber($num));
return ['number', $num, 'rad'];
}
/**
* Calculates tangent function
*
* @link https://lesscss.org/functions/#math-functions-tan
* @throws Exception
*/
public function tan(array $num): float
{
return tan(Asserts::assertNumber($num));
}
/**
* Calculates arctangent function
*
* @link https://lesscss.org/functions/#math-functions-atan
* @throws Exception
*/
public function atan(array $num): array
{
$num = atan(Asserts::assertNumber($num));
return ['number', $num, 'rad'];
}
/**
* Return the value of pi
*
* @link https://lesscss.org/functions/#math-functions-pi
*/
public function pi(): float
{
return pi();
}
/**
* Returns the value of the first argument raised to the power of the second argument.
*
* @link https://lesscss.org/functions/#math-functions-pow
* @throws Exception
*/
public function pow(array $args): array
{
[$base, $exp] = Asserts::assertArgs($args, 2, 'pow');
return ['number', Asserts::assertNumber($base) ** Asserts::assertNumber($exp), $args[2][0][2]];
}
/**
* Returns the value of the first argument modulus second argument.
*
* @link https://lesscss.org/functions/#math-functions-mod
* @throws Exception
*/
public function mod(array $args): array
{
[$a, $b] = Asserts::assertArgs($args, 2, 'mod');
return ['number', Asserts::assertNumber($a) % Asserts::assertNumber($b), $args[2][0][2]];
}
/**
* Returns the lowest of one or more values
*
* @link https://lesscss.org/functions/#math-functions-min
* @throws Exception
*/
public function min(array $args): array
{
$values = Asserts::assertMinArgs($args, 1, 'min');
$first_format = $values[0][2];
$min_index = 0;
$min_value = $values[0][1];
for ($a = 0; $a < sizeof($values); $a++) {
$converted = Util::convert($values[$a], $first_format);
if ($converted[1] < $min_value) {
$min_index = $a;
$min_value = $values[$a][1];
}
}
return $values[$min_index];
}
/**
* Returns the highest of one or more values
*
* @link https://lesscss.org/functions/#math-functions-max
* @throws Exception
*/
public function max(array $args): array
{
$values = Asserts::assertMinArgs($args, 1, 'max');
$first_format = $values[0][2];
$max_index = 0;
$max_value = $values[0][1];
for ($a = 0; $a < sizeof($values); $a++) {
$converted = Util::convert($values[$a], $first_format);
if ($converted[1] > $max_value) {
$max_index = $a;
$max_value = $values[$a][1];
}
}
return $values[$max_index];
}
}
|
