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feat: polymorphic type class members

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This commit is contained in:
Shunsuke Shibayama 2023-07-14 01:53:06 +09:00
parent f65e3acaf3
commit e3b479ebf7
12 changed files with 247 additions and 48 deletions
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34
crates/erg_compiler/context/eval.rs
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@ -303,8 +303,28 @@ impl Context {
fn call(&self, subr: ConstSubr, args: ValueArgs, loc: Location) -> EvalResult<ValueObj> {
match subr {
ConstSubr::User(_user) => {
feature_error!(self, loc, "calling user-defined subroutines").map_err(Into::into)
ConstSubr::User(user) => {
// HACK: should avoid cloning
let mut subr_ctx = Context::instant(
user.name.clone(),
self.cfg.clone(),
2,
self.shared.clone(),
self.clone(),
);
// TODO: var_args
for (arg, sig) in args
.pos_args
.into_iter()
.zip(user.params.non_defaults.iter())
{
let name = VarName::from_str(sig.inspect().unwrap().clone());
subr_ctx.consts.insert(name, arg);
}
for (name, arg) in args.kw_args.into_iter() {
subr_ctx.consts.insert(VarName::from_str(name), arg);
}
subr_ctx.eval_const_block(&user.block())
}
ConstSubr::Builtin(builtin) => builtin.call(args, self).map_err(|mut e| {
if e.0.loc.is_unknown() {
@ -316,6 +336,16 @@ impl Context {
self.caused_by(),
))
}),
ConstSubr::Gen(gen) => gen.call(args, self).map_err(|mut e| {
if e.0.loc.is_unknown() {
e.0.loc = loc;
}
EvalErrors::from(EvalError::new(
*e.0,
self.cfg.input.clone(),
self.caused_by(),
))
}),
}
}