Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/ide/src/inlay_hints/adjustment.rs')
| -rw-r--r-- | crates/ide/src/inlay_hints/adjustment.rs | 64 |
1 files changed, 43 insertions, 21 deletions
diff --git a/crates/ide/src/inlay_hints/adjustment.rs b/crates/ide/src/inlay_hints/adjustment.rs index 581813f3b7..45e85a338a 100644 --- a/crates/ide/src/inlay_hints/adjustment.rs +++ b/crates/ide/src/inlay_hints/adjustment.rs @@ -3,7 +3,7 @@ //! let _: u32 = /* <never-to-any> */ loop {}; //! let _: &u32 = /* &* */ &mut 0; //! ``` -use hir::{Adjust, AutoBorrow, Mutability, OverloadedDeref, PointerCast, Safety, Semantics}; +use hir::{Adjust, Adjustment, AutoBorrow, HirDisplay, Mutability, PointerCast, Safety, Semantics}; use ide_db::RootDatabase; use syntax::{ @@ -11,7 +11,10 @@ use syntax::{ ted, }; -use crate::{AdjustmentHints, AdjustmentHintsMode, InlayHint, InlayHintsConfig, InlayKind}; +use crate::{ + AdjustmentHints, AdjustmentHintsMode, InlayHint, InlayHintLabel, InlayHintsConfig, InlayKind, + InlayTooltip, +}; pub(super) fn hints( acc: &mut Vec<InlayHint>, @@ -61,36 +64,47 @@ pub(super) fn hints( &mut tmp1 }; - for adjustment in iter { - if adjustment.source == adjustment.target { + for Adjustment { source, target, kind } in iter { + if source == target { continue; } // FIXME: Add some nicer tooltips to each of these - let text = match adjustment.kind { + let (text, coercion) = match kind { Adjust::NeverToAny if config.adjustment_hints == AdjustmentHints::Always => { - "<never-to-any>" + ("<never-to-any>", "never to any") + } + Adjust::Deref(_) => ("*", "dereference"), + Adjust::Borrow(AutoBorrow::Ref(Mutability::Shared)) => ("&", "borrow"), + Adjust::Borrow(AutoBorrow::Ref(Mutability::Mut)) => ("&mut ", "unique borrow"), + Adjust::Borrow(AutoBorrow::RawPtr(Mutability::Shared)) => { + ("&raw const ", "const pointer borrow") + } + Adjust::Borrow(AutoBorrow::RawPtr(Mutability::Mut)) => { + ("&raw mut ", "mut pointer borrow") } - Adjust::Deref(None) => "*", - Adjust::Deref(Some(OverloadedDeref(Mutability::Mut))) => "*", - Adjust::Deref(Some(OverloadedDeref(Mutability::Shared))) => "*", - Adjust::Borrow(AutoBorrow::Ref(Mutability::Shared)) => "&", - Adjust::Borrow(AutoBorrow::Ref(Mutability::Mut)) => "&mut ", - Adjust::Borrow(AutoBorrow::RawPtr(Mutability::Shared)) => "&raw const ", - Adjust::Borrow(AutoBorrow::RawPtr(Mutability::Mut)) => "&raw mut ", // some of these could be represented via `as` casts, but that's not too nice and // handling everything as a prefix expr makes the `(` and `)` insertion easier Adjust::Pointer(cast) if config.adjustment_hints == AdjustmentHints::Always => { match cast { - PointerCast::ReifyFnPointer => "<fn-item-to-fn-pointer>", - PointerCast::UnsafeFnPointer => "<safe-fn-pointer-to-unsafe-fn-pointer>", + PointerCast::ReifyFnPointer => { + ("<fn-item-to-fn-pointer>", "fn item to fn pointer") + } + PointerCast::UnsafeFnPointer => ( + "<safe-fn-pointer-to-unsafe-fn-pointer>", + "safe fn pointer to unsafe fn pointer", + ), PointerCast::ClosureFnPointer(Safety::Unsafe) => { - "<closure-to-unsafe-fn-pointer>" + ("<closure-to-unsafe-fn-pointer>", "closure to unsafe fn pointer") + } + PointerCast::ClosureFnPointer(Safety::Safe) => { + ("<closure-to-fn-pointer>", "closure to fn pointer") + } + PointerCast::MutToConstPointer => { + ("<mut-ptr-to-const-ptr>", "mut ptr to const ptr") } - PointerCast::ClosureFnPointer(Safety::Safe) => "<closure-to-fn-pointer>", - PointerCast::MutToConstPointer => "<mut-ptr-to-const-ptr>", - PointerCast::ArrayToPointer => "<array-ptr-to-element-ptr>", - PointerCast::Unsize => "<unsize>", + PointerCast::ArrayToPointer => ("<array-ptr-to-element-ptr>", ""), + PointerCast::Unsize => ("<unsize>", "unsize"), } } _ => continue, @@ -98,7 +112,15 @@ pub(super) fn hints( acc.push(InlayHint { range: expr.syntax().text_range(), kind: if postfix { InlayKind::AdjustmentPostfix } else { InlayKind::Adjustment }, - label: if postfix { format!(".{}", text.trim_end()).into() } else { text.into() }, + label: InlayHintLabel::simple( + if postfix { format!(".{}", text.trim_end()) } else { text.to_owned() }, + Some(InlayTooltip::Markdown(format!( + "`{}` → `{}` ({coercion} coercion)", + source.display(sema.db), + target.display(sema.db), + ))), + None, + ), }); } if !postfix && needs_inner_parens { |