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use std::rc::Rc;
use crate::span::Spanned;
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct LetVar {
pub name: Spanned<Rc<str>>,
pub expr: Spanned<Expr>,
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub enum Atom {
Int(i64),
Str(Rc<str>),
Sym(Rc<str>),
Bool(bool),
Nil,
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub enum Expr {
Fn {
name: Spanned<Rc<str>>,
args: Vec<Spanned<Rc<str>>>,
body: Vec<Spanned<Expr>>,
},
Const {
vars: Vec<Spanned<LetVar>>,
},
Let {
vars: Vec<Spanned<LetVar>>,
body: Vec<Spanned<Expr>>,
},
If {
condition: Spanned<Box<Expr>>,
then_expr: Spanned<Box<Expr>>,
else_expr: Option<Spanned<Box<Expr>>>,
},
For {
loop_var: Spanned<Rc<str>>,
from: Spanned<Box<Expr>>,
to: Spanned<Box<Expr>>,
body: Vec<Spanned<Expr>>,
},
Set {
target_var: Spanned<Rc<str>>,
expr: Spanned<Box<Expr>>,
},
Do {
body: Vec<Spanned<Expr>>,
},
Call {
fn_name: Spanned<Rc<str>>,
args: Vec<Spanned<Expr>>,
},
Atom(Atom),
}
#[derive(Clone, Debug, PartialEq, Eq)]
pub struct Ast(Vec<Spanned<Expr>>);
impl Ast {
pub fn new(ast: Vec<Spanned<Expr>>) -> Self {
Self(ast)
}
pub fn inner(&self) -> &[Spanned<Expr>] {
&self.0
}
pub fn into_inner(self) -> Vec<Spanned<Expr>> {
self.0
}
}
|
