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RFC: use finish_non_exhaustive #96

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RFC: use finish_non_exhaustive #96

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2 changes: 1 addition & 1 deletion src/ast.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -34,7 +34,7 @@ pub struct Field<'a> {
pub span: proc_macro2::Span,
}

#[derive(Clone, Copy, Debug)]
#[derive(Clone, Copy, Debug, PartialEq)]
pub enum Style {
Struct,
Tuple,
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11 changes: 10 additions & 1 deletion src/debug.rs
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Expand Up @@ -72,6 +72,15 @@ pub fn derive(input: &ast::Input) -> proc_macro2::TokenStream {
};
let method = syn::Ident::new(method, proc_macro2::Span::call_site());

let field_prints: Vec<_> = field_prints.collect();
let exhaustive = field_prints.len() == bis.len();
let finish = if exhaustive || style != ast::Style::Struct {
"finish"
} else {
"finish_non_exhaustive"
};
let finish = syn::Ident::new(finish, proc_macro2::Span::call_site());

if attrs.debug_transparent() {
quote_spanned! {arm_name.span()=>
#(#field_prints)*
Expand All @@ -81,7 +90,7 @@ pub fn derive(input: &ast::Input) -> proc_macro2::TokenStream {
quote_spanned! {arm_name.span()=>
let mut __debug_trait_builder = #formatter.#method(#name);
#(#field_prints)*
__debug_trait_builder.finish()
__debug_trait_builder.#finish()
}
}
});
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4 changes: 2 additions & 2 deletions tests/derive-debug-generics.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -79,12 +79,12 @@ struct PhantomTuple<T> {

#[test]
fn main() {
assert_eq!(Foo { foo: 42, bar: NoDebug }.to_show(), "Foo { foo: 42 }".to_string());
assert_eq!(Foo { foo: 42, bar: NoDebug }.to_show(), "Foo { foo: 42, .. }".to_string());
assert_eq!(Bar(42, NoDebug).to_show(), "Bar(42)".to_string());
assert_eq!(C::V1::<i32, NoDebug>(12).to_show(), "V1(12)".to_string());
assert_eq!(C::V2::<i32, NoDebug>(NoDebug).to_show(), "V2".to_string());
assert_eq!(C::V3::<i32, NoDebug>("foo".to_string()).to_show(), "V3(\"foo\")".to_string());
assert_eq!(D::V1 { a: NoDebug }.to_show(), "V1".to_string());
assert_eq!(D::V1 { a: NoDebug }.to_show(), "V1 { .. }".to_string());
assert_eq!(F(NoDebug).to_show(), "F".to_string());
assert_eq!(G(42, NoDebug).to_show(), "G(42)".to_string());
assert_eq!(J(NoDebug).to_show(), "J".to_string());
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4 changes: 2 additions & 2 deletions tests/derive-debug-packed.rs
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Expand Up @@ -64,11 +64,11 @@ impl<T: std::fmt::Debug> ToDebug for T {

#[test]
fn main() {
assert_eq!(Foo { foo: 42, bar: 1 }.to_show(), "Foo { foo: 42 }".to_string());
assert_eq!(Foo { foo: 42, bar: 1 }.to_show(), "Foo { foo: 42, .. }".to_string());
assert_eq!(Bar(42, 1).to_show(), "Bar(42)".to_string());
assert_eq!(F(42).to_show(), "F".to_string());
assert_eq!(G(42, 0).to_show(), "G(42)".to_string());
assert_eq!(J(NoDebug).to_show(), "J".to_string());
assert_eq!(K(42, NoDebug).to_show(), "K(42)".to_string());
assert_eq!(L{ foo: NoDebug }.to_show(), "L".to_string());
assert_eq!(L{ foo: NoDebug }.to_show(), "L { .. }".to_string());
}
4 changes: 2 additions & 2 deletions tests/derive-debug.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -65,12 +65,12 @@ impl<T: std::fmt::Debug> ToDebug for T {

#[test]
fn main() {
assert_eq!(Foo { foo: 42, bar: 1 }.to_show(), "Foo { foo: 42 }".to_string());
assert_eq!(Foo { foo: 42, bar: 1 }.to_show(), "Foo { foo: 42, .. }".to_string());
assert_eq!(Bar(42, 1).to_show(), "Bar(42)".to_string());
assert_eq!(C::V1(12).to_show(), "V1(12)".to_string());
assert_eq!(C::V2(12).to_show(), "V2".to_string());
assert_eq!(C::V3("foo".to_string()).to_show(), "V3(\"foo\")".to_string());
assert_eq!(D::V1 { a: 42 }.to_show(), "V1".to_string());
assert_eq!(D::V1 { a: 42 }.to_show(), "V1 { .. }".to_string());
assert_eq!(F(42).to_show(), "F".to_string());
assert_eq!(G(42, 0).to_show(), "G(42)".to_string());
assert_eq!(J(NoDebug).to_show(), "J".to_string());
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