mirror of https://github.com/azur1s/bobbylisp.git
72 lines
2.1 KiB
Rust
72 lines
2.1 KiB
Rust
use std::fmt::{Display, Formatter, Result as FmtResult};
|
|
use super::ty::Type;
|
|
|
|
#[derive(Clone, Debug)]
|
|
pub enum JSLiteral { Num(i64), Str(String), Bool(bool) }
|
|
|
|
/// Enum to represent javascript expression
|
|
#[derive(Clone, Debug)]
|
|
pub enum JSExpr {
|
|
Lit(JSLiteral),
|
|
Sym(String),
|
|
|
|
Op(&'static str, Box<Self>, Option<Box<Self>>),
|
|
|
|
Call(Box<Self>, Vec<Self>),
|
|
Method(Box<Self>, String, Vec<Self>),
|
|
Lambda {
|
|
args: Vec<(String, Type)>,
|
|
body: Box<Self>,
|
|
},
|
|
}
|
|
|
|
impl Display for JSExpr {
|
|
fn fmt(&self, f: &mut Formatter) -> FmtResult {
|
|
match self {
|
|
JSExpr::Lit(l) => match l {
|
|
JSLiteral::Num(n) => write!(f, "{}", n),
|
|
JSLiteral::Str(s) => write!(f, "'{}'", s),
|
|
JSLiteral::Bool(b) => write!(f, "{}", b),
|
|
},
|
|
JSExpr::Sym(s) => write!(f, "{}", s),
|
|
|
|
JSExpr::Op(op, lhs, rhs) => {
|
|
match rhs {
|
|
Some(rhs) => write!(f, "({} {} {})", lhs, op, rhs),
|
|
None => write!(f, "({} {})", op, lhs),
|
|
}
|
|
}
|
|
|
|
JSExpr::Call(c, args) => {
|
|
write!(f, "{}(", c)?;
|
|
for (i, arg) in args.iter().enumerate() {
|
|
if i > 0 {
|
|
write!(f, ", ")?;
|
|
}
|
|
write!(f, "{}", arg)?;
|
|
}
|
|
write!(f, ")")
|
|
},
|
|
JSExpr::Method(c, m, args) => {
|
|
write!(f, "{}.{}(", c, m)?;
|
|
for (i, arg) in args.iter().enumerate() {
|
|
if i > 0 {
|
|
write!(f, ", ")?;
|
|
}
|
|
write!(f, "{}", arg)?;
|
|
}
|
|
write!(f, ")")
|
|
},
|
|
JSExpr::Lambda { args, body } => {
|
|
write!(f, "((")?;
|
|
for (i, (name, _ty)) in args.iter().enumerate() {
|
|
if i > 0 {
|
|
write!(f, ", ")?;
|
|
}
|
|
write!(f, "{}", name)?;
|
|
}
|
|
write!(f, ") => {})", body)
|
|
},
|
|
}
|
|
}
|
|
} |