cb0284f98e
This PR implements signature help support. When typing a function application, editors with support for signature help will now display a popup that designates the current (remaining) function type. This removes the need to remember the function signature while typing the function application, or having to constantly cycle between hovering over the function identifier and typing the application. In VS Code, the signature help can be triggered manually using `Ctrl+Shift+Space`.  ### Other changes - In order to support signature help for the partial syntax `f a <|` or `f a $`, these notations now elaborate as `f a`, not `f a .missing`. - The logic in `delabConstWithSignature` that delaborates parameters is factored out into a function `delabForallParamsWithSignature` so that it can be used for arbitrary `forall`s, not just constants. - The `InfoTree` formatter is adjusted to produce output where it is easier to identify the kind of `Info` in the `InfoTree`. - A bug in `InfoTree.smallestInfo?` is fixed so that it doesn't panic anymore when its predicate `p` does not ensure that both `pos?` and `tailPos?` of the `Info` are present.
144 lines
5.3 KiB
Text
144 lines
5.3 KiB
Text
def simpleFun {_ : Type} (a b : Nat) : Nat → Nat → Nat := sorry
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#check simpleFun -- Full signature help expected
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--^ textDocument/signatureHelp
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#check simpleFun -- Full signature help expected
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--^ textDocument/signatureHelp
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#check simpleFun 0 -- Shortened signature help expected (implicit is skipped)
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--^ textDocument/signatureHelp
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#check simpleFun 0 0 -- Shortened signature help without ∀ expected
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--^ textDocument/signatureHelp
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#check simpleFun 0 0 0 -- Shortened signature help without ∀ expected
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--^ textDocument/signatureHelp
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#check simpleFun 0 0 0 0 -- No signature help expected
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--^ textDocument/signatureHelp
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#check simpleFun 0 0 0 0 -- No signature help expected
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--^ textDocument/signatureHelp
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#check simpleFun -- No signature help expected in end-of-line comment
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--^ textDocument/signatureHelp
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#check simpleFun <| -- Full signature help expected
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--^ textDocument/signatureHelp
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#check simpleFun 0 0 0 <| -- Shortened signature help expected
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--^ textDocument/signatureHelp
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#check simpleFun 0 <| simpleFun -- Full signature help expected
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--^ textDocument/signatureHelp
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#check simpleFun $ -- Full signature help expected
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--^ textDocument/signatureHelp
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#check simpleFun 0 0 0 $ -- Shortened signature help expected
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--^ textDocument/signatureHelp
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#check simpleFun 0 $ simpleFun -- Full signature help expected
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--^ textDocument/signatureHelp
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#check simpleFun ( ) -- No signature help expected
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--^ textDocument/signatureHelp
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#check @simpleFun -- Full signature help expected
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--^ textDocument/signatureHelp
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#check @simpleFun _ -- Shortened signature help expected (implicit is not skipped)
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--^ textDocument/signatureHelp
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#check simpleFun (b := 0) -- Shortened signature help without `b` expected
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--^ textDocument/signatureHelp
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#check (simpleFun 0) -- Shortened signature help expected
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--^ textDocument/signatureHelp
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#check (simpleFun 0) 0 -- Shortened signature help expected
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--^ textDocument/signatureHelp
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def simpleProp (x y : Nat) : x = y → x = y := sorry
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#check simpleProp -- Full signature help with `∀` expected
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--^ textDocument/signatureHelp
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#check simpleProp 0 -- Shortened signature help with `∀` expected
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--^ textDocument/signatureHelp
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#check simpleProp 0 0 -- Shortened signature help with remaining implication expected
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--^ textDocument/signatureHelp
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#check simpleProp 0 0 sorry -- No signature help expected
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--^ textDocument/signatureHelp
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def complexFun (f : Nat → Nat → Nat → Nat → Nat) (x : Nat) : Nat := sorry
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#check complexFun simpleFun -- Shortened signature help of `complexFun` expected
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--^ textDocument/signatureHelp
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#check complexFun simpleFun 0 -- No signature help expected
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--^ textDocument/signatureHelp
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#check complexFun (simpleFun ) -- Signature help of `simpleFun` expected
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--^ textDocument/signatureHelp
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structure SomeStructure where
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fieldFun (x : Nat) : Nat → Nat
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def SomeStructure.dotFun (s : SomeStructure) (x : Nat) : Nat := sorry
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def SomeStructure.dotIdFun (x : Nat) : SomeStructure := sorry
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variable (s : SomeStructure) (s' : Nat → SomeStructure)
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#check s.fieldFun -- Full signature help expected
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--^ textDocument/signatureHelp
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#check s.fieldFun 0 -- Shortened signature help expected
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--^ textDocument/signatureHelp
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#check s.fieldFun 0 0 -- No signature help expected
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--^ textDocument/signatureHelp
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#check (s' 0).fieldFun -- Full signature help expected
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--^ textDocument/signatureHelp
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#check (s' 0).fieldFun 0 -- Shortened signature help expected
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--^ textDocument/signatureHelp
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#check s.dotFun -- Full signature help expected
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--^ textDocument/signatureHelp
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#check s.dotFun 0 -- No signature help expected
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--^ textDocument/signatureHelp
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#check (s' 0).dotFun -- Full signature help expected
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--^ textDocument/signatureHelp
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#check (s' 0).dotFun 0 -- No signature help expected
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--^ textDocument/signatureHelp
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#check s |>.fieldFun -- Full signature help expected
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--^ textDocument/signatureHelp
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#check s |>.fieldFun 0 -- Shortened signature help expected
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--^ textDocument/signatureHelp
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#check s |>.fieldFun 0 0 -- No signature help expected
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--^ textDocument/signatureHelp
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#check s' 0 |>.fieldFun -- Full signature help expected
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--^ textDocument/signatureHelp
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#check s' 0 |>.fieldFun 0 -- Shortened signature help expected
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--^ textDocument/signatureHelp
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example : SomeStructure := .dotIdFun -- Full signature help expected
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--^ textDocument/signatureHelp
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example : SomeStructure := .dotIdFun 0 -- No signature help expected
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--^ textDocument/signatureHelp
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