forked from M-Labs/nac3
core/toplevel/composer: Add parsing for vararg parameter
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@ -860,7 +860,72 @@ impl TopLevelComposer {
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let resolver = &**resolver;
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let mut function_var_map = VarMap::new();
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let arg_types = {
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let vararg = args
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.vararg
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.as_ref()
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.map(|vararg| -> Result<_, HashSet<String>> {
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let vararg = vararg.as_ref();
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let annotation = vararg
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.node
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.annotation
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.as_ref()
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.ok_or_else(|| {
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HashSet::from([format!(
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"function parameter `{}` needs type annotation at {}",
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vararg.node.arg, vararg.location
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)])
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})?
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.as_ref();
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let type_annotation = parse_ast_to_type_annotation_kinds(
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resolver,
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temp_def_list.as_slice(),
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unifier,
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primitives_store,
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annotation,
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// NOTE: since only class need this, for function
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// it should be fine to be empty map
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HashMap::new(),
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)?;
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let type_vars_within =
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get_type_var_contained_in_type_annotation(&type_annotation)
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.into_iter()
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.map(|x| -> Result<TypeVar, HashSet<String>> {
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let TypeAnnotation::TypeVar(ty) = x else {
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unreachable!("must be type var annotation kind")
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};
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let id = Self::get_var_id(ty, unifier)?;
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Ok(TypeVar { id, ty })
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})
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.collect::<Result<Vec<_>, _>>()?;
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for var in type_vars_within {
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if let Some(prev_ty) = function_var_map.insert(var.id, var.ty) {
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// if already have the type inserted, make sure they are the same thing
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assert_eq!(prev_ty, var.ty);
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}
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}
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let ty = get_type_from_type_annotation_kinds(
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temp_def_list.as_ref(),
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unifier,
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primitives_store,
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&type_annotation,
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&mut None,
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)?;
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Ok(FuncArg {
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name: vararg.node.arg,
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ty,
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default_value: Some(SymbolValue::Tuple(Vec::default())),
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})
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})
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.transpose()?;
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let mut arg_types = {
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// make sure no duplicate parameter
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let mut defined_parameter_name: HashSet<_> = HashSet::new();
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for x in &args.args {
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@ -966,6 +1031,12 @@ impl TopLevelComposer {
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.collect::<Result<Vec<_>, _>>()?
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};
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if let Some(vararg) = vararg {
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arg_types.push(vararg)
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};
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let arg_types = arg_types;
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let return_ty = {
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if let Some(returns) = returns {
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let return_ty_annotation = {
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