kjuulh/rhai
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Flatten type groups and types in parentheses.

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This commit is contained in:
Stephen Chung
2020-09-22 21:29:44 +08:00
parent 3224c5baf5
commit 5a37497a22
2 changed files with 15 additions and 5 deletions
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18
codegen/src/rhai_module.rs
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@@ -85,12 +85,22 @@ pub(crate) fn generate_body(
.map(|fnarg| match fnarg {
syn::FnArg::Receiver(_) => panic!("internal error: receiver fn outside impl!?"),
syn::FnArg::Typed(syn::PatType { ref ty, .. }) => {
let arg_type = match ty.as_ref() {
fn flatten_groups(ty: &syn::Type) -> &syn::Type {
match ty {
syn::Type::Group(syn::TypeGroup { ref elem, .. })
| syn::Type::Paren(syn::TypeParen { ref elem, .. }) => {
flatten_groups(elem.as_ref())
}
_ => ty,
}
}
let arg_type = match flatten_groups(ty.as_ref()) {
syn::Type::Reference(syn::TypeReference {
mutability: None,
ref elem,
..
}) => match elem.as_ref() {
}) => match flatten_groups(elem.as_ref()) {
syn::Type::Path(ref p) if p.path == str_type_path => {
syn::parse2::<syn::Type>(quote! {
ImmutableString })
@@ -107,11 +117,11 @@ pub(crate) fn generate_body(
mutability: Some(_),
ref elem,
..
}) => match elem.as_ref() {
}) => match flatten_groups(elem.as_ref()) {
syn::Type::Path(ref p) => syn::parse2::<syn::Type>(quote! {
#p })
.unwrap(),
_ => panic!("internal error: non-string shared reference!?"),
_ => panic!("internal error: invalid mutable reference!?"),
},
t => t.clone(),
};