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#![allow(dead_code)]
pub mod display;
use crate::lexer::Token;
#[derive(Clone)]
pub enum Statement<'a> {
Val {
identifier: &'a Token<'a>,
initializer: &'a Expression<'a>,
},
Var {
identifier: &'a Token<'a>,
initializer: &'a Expression<'a>,
},
Expression {
expr: &'a Expression<'a>,
},
}
#[derive(Clone)]
pub enum Expression<'a> {
// Basic
Literal(Value),
Unary {
operation: Operation,
expr: &'a Expression<'a>,
},
Binary {
operation: Operation,
lhs: &'a Expression<'a>,
rhs: &'a Expression<'a>,
},
// Grouping
}
#[derive(Clone)]
pub enum Operation {
Add,
Subtract,
}
#[derive(Clone)]
pub struct Value(pub i32);
#[test]
fn test() {
let right = Expression::Literal(Value(7));
let _ = Expression::Binary {
operation: Operation::Add,
lhs: &Expression::Literal(Value(5)),
rhs: &right,
};
}
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