1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39

use crate::{
    expr::{Expr, Primary},
    ty::Ty,
};
use calypso_base::span::Spanned;
use calypso_error::CalResult;

pub trait Visitor {
    /// Visit an expression.
    ///
    /// # Errors
    ///
    /// This function may arbitrarily error depending on its implementation.
    fn visit_expr<'src>(&mut self, _src: &'src str, _expr: Spanned<&Expr>) -> CalResult<()> {
        Ok(())
    }

    /// Visit a primary value.
    ///
    /// # Errors
    ///
    /// This function may arbitrarily error depending on its implementation.
    fn visit_primary<'src>(
        &mut self,
        _src: &'src str,
        _primary: Spanned<&Primary>,
    ) -> CalResult<()> {
        Ok(())
    }

    /// Visit a type.
    ///
    /// # Errors
    ///
    /// This function may arbitrarily error depending on its implementation.
    fn visit_ty<'src>(&mut self, _src: &'src str, _ty: Spanned<&Ty>) -> CalResult<()> {
        Ok(())
    }
}