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Improve error messages for unexpected keyword args

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This commit is contained in:
Shunsuke Shibayama 2022-11-29 14:43:27 +09:00
parent 7a23e49ddb
commit aa90b09254
1 changed files with 71 additions and 10 deletions
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81
compiler/erg_compiler/context/inquire.rs
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@ -931,16 +931,7 @@ impl Context {
if (params_len < pos_args.len() || params_len < pos_args.len() + kw_args.len())
&& subr.var_params.is_none()
{
return Err(TyCheckErrors::from(TyCheckError::too_many_args_error(
self.cfg.input.clone(),
line!() as usize,
callee.loc(),
&callee.to_string(),
self.caused_by(),
params_len,
pos_args.len(),
kw_args.len(),
)));
return Err(self.gen_too_many_args_error(&callee, subr, pos_args, kw_args));
}
let mut passed_params = set! {};
let non_default_params = if is_method {
@ -1101,6 +1092,76 @@ impl Context {
}
}
fn gen_too_many_args_error(
&self,
callee: &hir::Expr,
subr_ty: &SubrType,
pos_args: &[hir::PosArg],
kw_args: &[hir::KwArg],
) -> TyCheckErrors {
let mut unknown_args = vec![];
let mut passed_args = vec![];
let mut duplicated_args = vec![];
for kw_arg in kw_args.iter() {
if subr_ty
.non_default_params
.iter()
.all(|pt| pt.name() != Some(kw_arg.keyword.inspect()))
&& subr_ty
.var_params
.as_ref()
.map(|pt| pt.name() != Some(kw_arg.keyword.inspect()))
.unwrap_or(true)
&& subr_ty
.default_params
.iter()
.all(|pt| pt.name() != Some(kw_arg.keyword.inspect()))
{
unknown_args.push(kw_arg.keyword.inspect().clone());
}
if passed_args.contains(kw_arg.keyword.inspect()) {
duplicated_args.push(kw_arg.keyword.inspect().clone());
} else {
passed_args.push(kw_arg.keyword.inspect().clone());
}
}
if unknown_args.is_empty() && duplicated_args.is_empty() {
let params_len = subr_ty.non_default_params.len() + subr_ty.default_params.len();
TyCheckErrors::from(TyCheckError::too_many_args_error(
self.cfg.input.clone(),
line!() as usize,
callee.loc(),
&callee.to_string(),
self.caused_by(),
params_len,
pos_args.len(),
kw_args.len(),
))
} else {
let unknown_arg_errors = unknown_args.into_iter().map(|name| {
TyCheckError::unexpected_kw_arg_error(
self.cfg.input.clone(),
line!() as usize,
callee.loc(),
&callee.to_string(),
self.caused_by(),
&name,
)
});
let duplicated_arg_errors = duplicated_args.into_iter().map(|name| {
TyCheckError::multiple_args_error(
self.cfg.input.clone(),
line!() as usize,
callee.loc(),
&callee.to_string(),
self.caused_by(),
&name,
)
});
unknown_arg_errors.chain(duplicated_arg_errors).collect()
}
}
fn substitute_pos_arg(
&self,
callee: &hir::Expr,