`mini\Util\Math\ExprParser` final class

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Documentation

Infix to expression tree parser using shunting-yard algorithm

Supports:

Binary operators: +, -, *, /, %, **
Unary operators: -x, +x
Functions: sqrt(x), exp(x), ln(x), abs(x)
Parentheses
Decimal numbers

Constants (4)

Name	Value
`PRECEDENCE`	`array ( '+' => 1, '-' => 1, '' => 2, '/' => 2, '%' => 2, '*' => 3, 'neg' => 3, 'pos' => 3, 'sqrt' => 4, 'exp' => 4, 'ln' => 4, 'abs' => 4, )`
`RIGHT_ASSOC`	`array ( 0 => '**', 1 => 'neg', 2 => 'pos', )`
`UNARY`	`array ( 0 => 'neg', 1 => 'pos', 2 => 'sqrt', 3 => 'exp', 4 => 'ln', 5 => 'abs', )`
`FUNCTIONS`	`array ( 0 => 'sqrt', 1 => 'exp', 2 => 'ln', 3 => 'abs', )`

Properties (3)

private string $input

private int $pos

private int $len

Methods (9)

public `__construct()`

Documentation missing

public `parse()`

Documentation missing

private `applyOperator()`

Documentation missing

private `skipWhitespace()`

Documentation missing

private `isOperatorStart()`

Documentation missing

private `readOperator()`

Documentation missing

private `readFunction()`

Try to read a function name

private `shouldPopOperator()`

Documentation missing

private `readNumber()`

Documentation missing

Source

src/Util/Math/Expr.php:1022-1275