Struct Calculator 

pub struct Calculator;

Calculator engine that parses and evaluates DSL programs

Implementations

impl Calculator

pub fn new() -> Self

Create a new calculator instance

pub fn evaluate(&self, source: &str) -> Result<CalcResult>

Parse and evaluate a calculator DSL program

Example

use helix::operators::math::Calculator;

let calc = Calculator::new();
let src = r#"
reproducibility {
    a = 2
    b = 2
    c = a x b
    d = @c #4
}
"#;

let result = calc.evaluate(src).unwrap();
assert_eq!(result.env["a"], 2);
assert_eq!(result.env["b"], 2);
assert_eq!(result.env["c"], 4); // 2 * 2
assert_eq!(result.env["d"], 0); // 4 % 4

pub fn parse_only(&self, source: &str) -> Result<Vec<Assign>>

Parse a program and return the AST without evaluating