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chore: add vendor dependencies for kauma build

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0xalivecow 2024-10-23 10:20:38 +02:00
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vendor/syn/tests/test_ty.rs vendored Normal file
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#![allow(clippy::uninlined_format_args)]
#[macro_use]
mod macros;
use proc_macro2::{Delimiter, Group, Ident, Punct, Spacing, Span, TokenStream, TokenTree};
use quote::{quote, ToTokens as _};
use syn::punctuated::Punctuated;
use syn::{parse_quote, token, Token, Type, TypeTuple};
#[test]
fn test_mut_self() {
syn::parse_str::<Type>("fn(mut self)").unwrap();
syn::parse_str::<Type>("fn(mut self,)").unwrap();
syn::parse_str::<Type>("fn(mut self: ())").unwrap();
syn::parse_str::<Type>("fn(mut self: ...)").unwrap_err();
syn::parse_str::<Type>("fn(mut self: mut self)").unwrap_err();
syn::parse_str::<Type>("fn(mut self::T)").unwrap_err();
}
#[test]
fn test_macro_variable_type() {
// mimics the token stream corresponding to `$ty<T>`
let tokens = TokenStream::from_iter([
TokenTree::Group(Group::new(Delimiter::None, quote! { ty })),
TokenTree::Punct(Punct::new('<', Spacing::Alone)),
TokenTree::Ident(Ident::new("T", Span::call_site())),
TokenTree::Punct(Punct::new('>', Spacing::Alone)),
]);
snapshot!(tokens as Type, @r###"
Type::Path {
path: Path {
segments: [
PathSegment {
ident: "ty",
arguments: PathArguments::AngleBracketed {
args: [
GenericArgument::Type(Type::Path {
path: Path {
segments: [
PathSegment {
ident: "T",
},
],
},
}),
],
},
},
],
},
}
"###);
// mimics the token stream corresponding to `$ty::<T>`
let tokens = TokenStream::from_iter([
TokenTree::Group(Group::new(Delimiter::None, quote! { ty })),
TokenTree::Punct(Punct::new(':', Spacing::Joint)),
TokenTree::Punct(Punct::new(':', Spacing::Alone)),
TokenTree::Punct(Punct::new('<', Spacing::Alone)),
TokenTree::Ident(Ident::new("T", Span::call_site())),
TokenTree::Punct(Punct::new('>', Spacing::Alone)),
]);
snapshot!(tokens as Type, @r###"
Type::Path {
path: Path {
segments: [
PathSegment {
ident: "ty",
arguments: PathArguments::AngleBracketed {
colon2_token: Some,
args: [
GenericArgument::Type(Type::Path {
path: Path {
segments: [
PathSegment {
ident: "T",
},
],
},
}),
],
},
},
],
},
}
"###);
}
#[test]
fn test_group_angle_brackets() {
// mimics the token stream corresponding to `Option<$ty>`
let tokens = TokenStream::from_iter([
TokenTree::Ident(Ident::new("Option", Span::call_site())),
TokenTree::Punct(Punct::new('<', Spacing::Alone)),
TokenTree::Group(Group::new(Delimiter::None, quote! { Vec<u8> })),
TokenTree::Punct(Punct::new('>', Spacing::Alone)),
]);
snapshot!(tokens as Type, @r###"
Type::Path {
path: Path {
segments: [
PathSegment {
ident: "Option",
arguments: PathArguments::AngleBracketed {
args: [
GenericArgument::Type(Type::Group {
elem: Type::Path {
path: Path {
segments: [
PathSegment {
ident: "Vec",
arguments: PathArguments::AngleBracketed {
args: [
GenericArgument::Type(Type::Path {
path: Path {
segments: [
PathSegment {
ident: "u8",
},
],
},
}),
],
},
},
],
},
},
}),
],
},
},
],
},
}
"###);
}
#[test]
fn test_group_colons() {
// mimics the token stream corresponding to `$ty::Item`
let tokens = TokenStream::from_iter([
TokenTree::Group(Group::new(Delimiter::None, quote! { Vec<u8> })),
TokenTree::Punct(Punct::new(':', Spacing::Joint)),
TokenTree::Punct(Punct::new(':', Spacing::Alone)),
TokenTree::Ident(Ident::new("Item", Span::call_site())),
]);
snapshot!(tokens as Type, @r###"
Type::Path {
path: Path {
segments: [
PathSegment {
ident: "Vec",
arguments: PathArguments::AngleBracketed {
args: [
GenericArgument::Type(Type::Path {
path: Path {
segments: [
PathSegment {
ident: "u8",
},
],
},
}),
],
},
},
Token![::],
PathSegment {
ident: "Item",
},
],
},
}
"###);
let tokens = TokenStream::from_iter([
TokenTree::Group(Group::new(Delimiter::None, quote! { [T] })),
TokenTree::Punct(Punct::new(':', Spacing::Joint)),
TokenTree::Punct(Punct::new(':', Spacing::Alone)),
TokenTree::Ident(Ident::new("Element", Span::call_site())),
]);
snapshot!(tokens as Type, @r###"
Type::Path {
qself: Some(QSelf {
ty: Type::Slice {
elem: Type::Path {
path: Path {
segments: [
PathSegment {
ident: "T",
},
],
},
},
},
position: 0,
}),
path: Path {
leading_colon: Some,
segments: [
PathSegment {
ident: "Element",
},
],
},
}
"###);
}
#[test]
fn test_trait_object() {
let tokens = quote!(dyn for<'a> Trait<'a> + 'static);
snapshot!(tokens as Type, @r###"
Type::TraitObject {
dyn_token: Some,
bounds: [
TypeParamBound::Trait(TraitBound {
lifetimes: Some(BoundLifetimes {
lifetimes: [
GenericParam::Lifetime(LifetimeParam {
lifetime: Lifetime {
ident: "a",
},
}),
],
}),
path: Path {
segments: [
PathSegment {
ident: "Trait",
arguments: PathArguments::AngleBracketed {
args: [
GenericArgument::Lifetime(Lifetime {
ident: "a",
}),
],
},
},
],
},
}),
Token![+],
TypeParamBound::Lifetime {
ident: "static",
},
],
}
"###);
let tokens = quote!(dyn 'a + Trait);
snapshot!(tokens as Type, @r###"
Type::TraitObject {
dyn_token: Some,
bounds: [
TypeParamBound::Lifetime {
ident: "a",
},
Token![+],
TypeParamBound::Trait(TraitBound {
path: Path {
segments: [
PathSegment {
ident: "Trait",
},
],
},
}),
],
}
"###);
// None of the following are valid Rust types.
syn::parse_str::<Type>("for<'a> dyn Trait<'a>").unwrap_err();
syn::parse_str::<Type>("dyn for<'a> 'a + Trait").unwrap_err();
}
#[test]
fn test_trailing_plus() {
#[rustfmt::skip]
let tokens = quote!(impl Trait +);
snapshot!(tokens as Type, @r###"
Type::ImplTrait {
bounds: [
TypeParamBound::Trait(TraitBound {
path: Path {
segments: [
PathSegment {
ident: "Trait",
},
],
},
}),
Token![+],
],
}
"###);
#[rustfmt::skip]
let tokens = quote!(dyn Trait +);
snapshot!(tokens as Type, @r###"
Type::TraitObject {
dyn_token: Some,
bounds: [
TypeParamBound::Trait(TraitBound {
path: Path {
segments: [
PathSegment {
ident: "Trait",
},
],
},
}),
Token![+],
],
}
"###);
#[rustfmt::skip]
let tokens = quote!(Trait +);
snapshot!(tokens as Type, @r###"
Type::TraitObject {
bounds: [
TypeParamBound::Trait(TraitBound {
path: Path {
segments: [
PathSegment {
ident: "Trait",
},
],
},
}),
Token![+],
],
}
"###);
}
#[test]
fn test_tuple_comma() {
let mut expr = TypeTuple {
paren_token: token::Paren::default(),
elems: Punctuated::new(),
};
snapshot!(expr.to_token_stream() as Type, @"Type::Tuple");
expr.elems.push_value(parse_quote!(_));
// Must not parse to Type::Paren
snapshot!(expr.to_token_stream() as Type, @r###"
Type::Tuple {
elems: [
Type::Infer,
Token![,],
],
}
"###);
expr.elems.push_punct(<Token![,]>::default());
snapshot!(expr.to_token_stream() as Type, @r###"
Type::Tuple {
elems: [
Type::Infer,
Token![,],
],
}
"###);
expr.elems.push_value(parse_quote!(_));
snapshot!(expr.to_token_stream() as Type, @r###"
Type::Tuple {
elems: [
Type::Infer,
Token![,],
Type::Infer,
],
}
"###);
expr.elems.push_punct(<Token![,]>::default());
snapshot!(expr.to_token_stream() as Type, @r###"
Type::Tuple {
elems: [
Type::Infer,
Token![,],
Type::Infer,
Token![,],
],
}
"###);
}
#[test]
fn test_impl_trait_use() {
let tokens = quote! {
impl Sized + use<'_, 'a, A, Test>
};
snapshot!(tokens as Type, @r###"
Type::ImplTrait {
bounds: [
TypeParamBound::Trait(TraitBound {
path: Path {
segments: [
PathSegment {
ident: "Sized",
},
],
},
}),
Token![+],
TypeParamBound::Verbatim(`use < '_ , 'a , A , Test >`),
],
}
"###);
let trailing = quote! {
impl Sized + use<'_,>
};
snapshot!(trailing as Type, @r###"
Type::ImplTrait {
bounds: [
TypeParamBound::Trait(TraitBound {
path: Path {
segments: [
PathSegment {
ident: "Sized",
},
],
},
}),
Token![+],
TypeParamBound::Verbatim(`use < '_ , >`),
],
}
"###);
}