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Auto merge of #13885 - Veykril:bin-op-adjust, r=Veykril
Skip lifetime elision on fn pointers and fn trait types
These currently don't work correctly, so it's better to not render them at all there
| -rw-r--r-- | crates/hir-ty/src/infer/expr.rs | 1 | ||||
| -rw-r--r-- | crates/ide-assists/src/handlers/add_explicit_type.rs | 5 | ||||
| -rw-r--r-- | crates/ide-assists/src/handlers/extract_type_alias.rs | 120 | ||||
| -rw-r--r-- | crates/ide-db/src/syntax_helpers/node_ext.rs | 9 | ||||
| -rw-r--r-- | crates/ide/src/inlay_hints/fn_lifetime_fn.rs | 30 |
5 files changed, 100 insertions, 65 deletions
diff --git a/crates/hir-ty/src/infer/expr.rs b/crates/hir-ty/src/infer/expr.rs index 2e5c424410..a015f67024 100644 --- a/crates/hir-ty/src/infer/expr.rs +++ b/crates/hir-ty/src/infer/expr.rs @@ -334,6 +334,7 @@ impl<'a> InferenceContext<'a> { let (param_tys, ret_ty) = match res { Some(res) => { let adjustments = auto_deref_adjust_steps(&derefs); + // FIXME: Handle call adjustments for Fn/FnMut self.write_expr_adj(*callee, adjustments); res } diff --git a/crates/ide-assists/src/handlers/add_explicit_type.rs b/crates/ide-assists/src/handlers/add_explicit_type.rs index b5f99726fe..0057f439f1 100644 --- a/crates/ide-assists/src/handlers/add_explicit_type.rs +++ b/crates/ide-assists/src/handlers/add_explicit_type.rs @@ -47,7 +47,10 @@ pub(crate) fn add_explicit_type(acc: &mut Assists, ctx: &AssistContext<'_>) -> O // Don't enable the assist if there is a type ascription without any placeholders if let Some(ty) = &ascribed_ty { let mut contains_infer_ty = false; - walk_ty(ty, &mut |ty| contains_infer_ty |= matches!(ty, ast::Type::InferType(_))); + walk_ty(ty, &mut |ty| { + contains_infer_ty |= matches!(ty, ast::Type::InferType(_)); + false + }); if !contains_infer_ty { cov_mark::hit!(add_explicit_type_not_applicable_if_ty_already_specified); return None; diff --git a/crates/ide-assists/src/handlers/extract_type_alias.rs b/crates/ide-assists/src/handlers/extract_type_alias.rs index 3116935fc5..0505f5784f 100644 --- a/crates/ide-assists/src/handlers/extract_type_alias.rs +++ b/crates/ide-assists/src/handlers/extract_type_alias.rs @@ -108,76 +108,80 @@ fn collect_used_generics<'gp>( } let mut generics = Vec::new(); - walk_ty(ty, &mut |ty| match ty { - ast::Type::PathType(ty) => { - if let Some(path) = ty.path() { - if let Some(name_ref) = path.as_single_name_ref() { - if let Some(param) = known_generics.iter().find(|gp| { - match gp { - ast::GenericParam::ConstParam(cp) => cp.name(), - ast::GenericParam::TypeParam(tp) => tp.name(), - _ => None, + walk_ty(ty, &mut |ty| { + match ty { + ast::Type::PathType(ty) => { + if let Some(path) = ty.path() { + if let Some(name_ref) = path.as_single_name_ref() { + if let Some(param) = known_generics.iter().find(|gp| { + match gp { + ast::GenericParam::ConstParam(cp) => cp.name(), + ast::GenericParam::TypeParam(tp) => tp.name(), + _ => None, + } + .map_or(false, |n| n.text() == name_ref.text()) + }) { + generics.push(param); } - .map_or(false, |n| n.text() == name_ref.text()) - }) { - generics.push(param); } + generics.extend( + path.segments() + .filter_map(|seg| seg.generic_arg_list()) + .flat_map(|it| it.generic_args()) + .filter_map(|it| match it { + ast::GenericArg::LifetimeArg(lt) => { + let lt = lt.lifetime()?; + known_generics.iter().find(find_lifetime(<.text())) + } + _ => None, + }), + ); } - generics.extend( - path.segments() - .filter_map(|seg| seg.generic_arg_list()) - .flat_map(|it| it.generic_args()) - .filter_map(|it| match it { - ast::GenericArg::LifetimeArg(lt) => { - let lt = lt.lifetime()?; - known_generics.iter().find(find_lifetime(<.text())) - } - _ => None, - }), - ); } - } - ast::Type::ImplTraitType(impl_ty) => { - if let Some(it) = impl_ty.type_bound_list() { - generics.extend( - it.bounds() - .filter_map(|it| it.lifetime()) - .filter_map(|lt| known_generics.iter().find(find_lifetime(<.text()))), - ); + ast::Type::ImplTraitType(impl_ty) => { + if let Some(it) = impl_ty.type_bound_list() { + generics.extend( + it.bounds() + .filter_map(|it| it.lifetime()) + .filter_map(|lt| known_generics.iter().find(find_lifetime(<.text()))), + ); + } } - } - ast::Type::DynTraitType(dyn_ty) => { - if let Some(it) = dyn_ty.type_bound_list() { - generics.extend( - it.bounds() - .filter_map(|it| it.lifetime()) - .filter_map(|lt| known_generics.iter().find(find_lifetime(<.text()))), - ); + ast::Type::DynTraitType(dyn_ty) => { + if let Some(it) = dyn_ty.type_bound_list() { + generics.extend( + it.bounds() + .filter_map(|it| it.lifetime()) + .filter_map(|lt| known_generics.iter().find(find_lifetime(<.text()))), + ); + } } - } - ast::Type::RefType(ref_) => generics.extend( - ref_.lifetime().and_then(|lt| known_generics.iter().find(find_lifetime(<.text()))), - ), - ast::Type::ArrayType(ar) => { - if let Some(expr) = ar.expr() { - if let ast::Expr::PathExpr(p) = expr { - if let Some(path) = p.path() { - if let Some(name_ref) = path.as_single_name_ref() { - if let Some(param) = known_generics.iter().find(|gp| { - if let ast::GenericParam::ConstParam(cp) = gp { - cp.name().map_or(false, |n| n.text() == name_ref.text()) - } else { - false + ast::Type::RefType(ref_) => generics.extend( + ref_.lifetime() + .and_then(|lt| known_generics.iter().find(find_lifetime(<.text()))), + ), + ast::Type::ArrayType(ar) => { + if let Some(expr) = ar.expr() { + if let ast::Expr::PathExpr(p) = expr { + if let Some(path) = p.path() { + if let Some(name_ref) = path.as_single_name_ref() { + if let Some(param) = known_generics.iter().find(|gp| { + if let ast::GenericParam::ConstParam(cp) = gp { + cp.name().map_or(false, |n| n.text() == name_ref.text()) + } else { + false + } + }) { + generics.push(param); } - }) { - generics.push(param); } } } } } - } - _ => (), + _ => (), + }; + false }); // stable resort to lifetime, type, const generics.sort_by_key(|gp| match gp { diff --git a/crates/ide-db/src/syntax_helpers/node_ext.rs b/crates/ide-db/src/syntax_helpers/node_ext.rs index b72003ff36..aa03478599 100644 --- a/crates/ide-db/src/syntax_helpers/node_ext.rs +++ b/crates/ide-db/src/syntax_helpers/node_ext.rs @@ -173,7 +173,8 @@ pub fn walk_pat(pat: &ast::Pat, cb: &mut dyn FnMut(ast::Pat)) { } /// Preorder walk all the type's sub types. -pub fn walk_ty(ty: &ast::Type, cb: &mut dyn FnMut(ast::Type)) { +// FIXME: Make the control flow more proper +pub fn walk_ty(ty: &ast::Type, cb: &mut dyn FnMut(ast::Type) -> bool) { let mut preorder = ty.syntax().preorder(); while let Some(event) = preorder.next() { let node = match event { @@ -184,10 +185,12 @@ pub fn walk_ty(ty: &ast::Type, cb: &mut dyn FnMut(ast::Type)) { match ast::Type::cast(node) { Some(ty @ ast::Type::MacroType(_)) => { preorder.skip_subtree(); - cb(ty) + cb(ty); } Some(ty) => { - cb(ty); + if cb(ty) { + preorder.skip_subtree(); + } } // skip const args None if ast::ConstArg::can_cast(kind) => { diff --git a/crates/ide/src/inlay_hints/fn_lifetime_fn.rs b/crates/ide/src/inlay_hints/fn_lifetime_fn.rs index 1f5bcea63a..2aa5e3dc73 100644 --- a/crates/ide/src/inlay_hints/fn_lifetime_fn.rs +++ b/crates/ide/src/inlay_hints/fn_lifetime_fn.rs @@ -59,9 +59,14 @@ pub(super) fn hints( r.amp_token(), lifetime, is_elided, - )) + )); + false } - _ => (), + ast::Type::FnPtrType(_) => true, + ast::Type::PathType(t) => { + t.path().and_then(|it| it.segment()).and_then(|it| it.param_list()).is_some() + } + _ => false, }) }); acc @@ -146,8 +151,13 @@ pub(super) fn hints( is_trivial = false; acc.push(mk_lt_hint(amp, output_lt.to_string())); } + false + } + ast::Type::FnPtrType(_) => true, + ast::Type::PathType(t) => { + t.path().and_then(|it| it.segment()).and_then(|it| it.param_list()).is_some() } - _ => (), + _ => false, }) } } @@ -298,4 +308,18 @@ impl () { "#, ); } + + #[test] + fn hints_lifetimes_skip_fn_likes() { + check_with_config( + InlayHintsConfig { + lifetime_elision_hints: LifetimeElisionHints::Always, + ..TEST_CONFIG + }, + r#" +fn fn_ptr(a: fn(&()) -> &()) {} +fn fn_trait<>(a: impl Fn(&()) -> &()) {} +"#, + ); + } } |