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Centralize data for prefix ops too

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This commit is contained in:
greg 2018-02-24 17:43:26 -08:00
parent bb2e1ae27a
commit cfd6df7ba5
1 changed files with 12 additions and 13 deletions
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25
src/schala_lang/builtin.rs
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@ -20,18 +20,12 @@ impl BinOp {
let s = self.sigil.as_str();
BINOPS.get(s).map(|x| x.0.clone()).ok_or(format!("Binop {} not found", s))
}
}
impl BinOp {
pub fn min_precedence() -> i32 {
i32::min_value()
}
pub fn get_precedence(op: &str) -> i32 {
match op {
"+" | "-" => 10,
"*" | "/" | "%" => 20,
_ => 30,
}
let default = 10_000_000;
BINOPS.get(op).map(|x| x.2.clone()).unwrap_or(default)
}
}
@ -48,13 +42,18 @@ impl PrefixOp {
&self.sigil
}
pub fn is_prefix(op: &str) -> bool {
match op {
"+" | "-" | "!" | "~" => true,
_ => false,
}
PREFIX_OPS.get(op).is_some()
}
}
lazy_static! {
static ref PREFIX_OPS: HashMap<&'static str, (Type, ())> =
hashmap! {
"+" => (Func(bx!(Const(Int)), bx!(Const(Int))), ()),
"-" => (Func(bx!(Const(Int)), bx!(Const(Int))), ()),
"!" => (Func(bx!(Const(Bool)), bx!(Const(Bool))), ()),
"~" => (Func(bx!(Const(Int)), bx!(Const(Int))), ()),
};
}
/* the second tuple member is a placeholder for when I want to make evaluation rules tied to the
* binop definition */