Struct Expression

pub struct Expression<'a, T> {
    pub on: T,
    pub arguments: Vec<Expression<'a, T>, &'a Allocator>,
}

Fields

on: T

arguments: Vec<Expression<'a, T>, &'a Allocator>

Implementations

impl<'a, T> Expression<'a, T>

where T: Literal<'a>,

pub fn from_string( source: &'a str, config: &Configuration, allocator: &'a Allocator, ) -> Self

Examples found in repository

examples/wat.rs (line 16)

fn main() {
	let allocator = bumpalo::Bump::new();

	let expression = "(module
  (func (result i32)
    (i32.const 42)
  )
  (export \"helloWorld\" (func 0))
)";

	let configuration = Configuration::default();

	let expression: Expression<WASMValue> =
		Expression::from_string(expression, &configuration, &allocator);

	dbg!(expression);
}

examples/parse.rs (line 15)

fn main() {
	let configuration = Configuration {
		binary_operators: vec![
			BinaryOperator { representation: "*", precedence: 4 },
			BinaryOperator { representation: "+", precedence: 3 },
		],
		..Default::default()
	};

	if let Some(source) = std::env::args().nth(1) {
		let allocator = bumpalo::Bump::new();
		let expression: Expression<&str> =
			Expression::from_string(&source, &configuration, &allocator);
		eprintln!("{expression:#?}");
	} else {
		let sources: &[&str] = &["(x (a * b) (d * 2 + e))", "(x (a b) (c d e))"];

		for source in sources {
			let allocator = bumpalo::Bump::new();
			let expression: Expression<&str> =
				Expression::from_string(source, &configuration, &allocator);
			eprintln!("{expression:#?}");
		}
	}
}

examples/operations.rs (line 21)

fn main() {
	let multiply_operator = BinaryOperator { representation: "*", precedence: 4 };
	let sources = &["3xy+rx", "3*x*y+r*x", "(x + t)(x + z)", "sin(-x)"];
	let configuration = Configuration {
		prefix_unary_operators: vec![UnaryOperator { representation: "-", precedence: 2 }],
		binary_operators: vec![
			BinaryOperator { representation: "^", precedence: 5 },
			BinaryOperator { representation: "*", precedence: 4 },
			multiply_operator,
			BinaryOperator { representation: "+", precedence: 3 },
		],
		adjacency: Some(Adjacency { operator: multiply_operator, functions: vec!["sin"] }),
		..Default::default()
	};

	for source in sources {
		let allocator = bumpalo::Bump::new();
		let expression: Expression<&str> =
			Expression::from_string(source, &configuration, &allocator);
		eprintln!("{expression:#?}");
	}
}

pub fn from_reader( reader: &mut Lexer<'a>, config: &Configuration, allocator: &'a Allocator, ) -> Self

Trait Implementations

impl<'a, T: Debug> Debug for Expression<'a, T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.