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Fix generic type substitution in impl trait with assoc type

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Petr Nevyhoštěný 2021-12-22 19:48:14 +01:00
parent 0add6e95e5
commit d9b3242bcd
3 changed files with 411 additions and 11 deletions
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12
crates/syntax/src/ast/make.rs
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@ -166,6 +166,14 @@ pub fn path_segment(name_ref: ast::NameRef) -> ast::PathSegment {
ast_from_text(&format!("use {};", name_ref))
}
pub fn path_segment_ty(type_ref: ast::Type, trait_ref: Option<ast::PathType>) -> ast::PathSegment {
let text = match trait_ref {
Some(trait_ref) => format!("fn f(x: <{} as {}>) {{}}", type_ref, trait_ref),
None => format!("fn f(x: <{}>) {{}}", type_ref),
};
ast_from_text(&text)
}
pub fn path_segment_self() -> ast::PathSegment {
ast_from_text("use self;")
}
@ -196,9 +204,9 @@ pub fn path_from_segments(
) -> ast::Path {
let segments = segments.into_iter().map(|it| it.syntax().clone()).join("::");
ast_from_text(&if is_abs {
format!("use ::{};", segments)
format!("fn f(x: ::{}) {{}}", segments)
} else {
format!("use {};", segments)
format!("fn f(x: {}) {{}}", segments)
})
}