90075153b3
We need to report the jump target range in terms of a UTF-16 offset within the line, but to compute that we would have to load the target file, file-map it, and resolve that way each time the go-to-def handler runs. As an alternative, this stores the UTF-16 offsets in `DeclarationRange`.
43 lines
1.6 KiB
Text
43 lines
1.6 KiB
Text
/-
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Copyright (c) 2021 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Authors: Leonardo de Moura
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-/
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import Lean.MonadEnv
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import Lean.AuxRecursor
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namespace Lean
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structure DeclarationRange where
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pos : Position
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/-- A precomputed UTF-16 `character` field as in `Lean.Lsp.Position`. We need to store this
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because LSP clients want us to report the range in terms of UTF-16, but converting a Unicode
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codepoint stored in `Lean.Position` to UTF-16 requires loading and mapping the target source
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file, which is IO-heavy. -/
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charUtf16 : Nat
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endPos : Position
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/-- See `charUtf16`. -/
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endCharUtf16 : Nat
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deriving Inhabited, DecidableEq, Repr
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structure DeclarationRanges where
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range : DeclarationRange
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selectionRange : DeclarationRange
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deriving Inhabited, Repr
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builtin_initialize declRangeExt : MapDeclarationExtension DeclarationRanges ← mkMapDeclarationExtension `declranges
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def addDeclarationRanges [MonadEnv m] (declName : Name) (declRanges : DeclarationRanges) : m Unit :=
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modifyEnv fun env => declRangeExt.insert env declName declRanges
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def findDeclarationRangesCore? [Monad m] [MonadEnv m] (declName : Name) : m (Option DeclarationRanges) :=
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return declRangeExt.find? (← getEnv) declName
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def findDeclarationRanges? [Monad m] [MonadEnv m] (declName : Name) : m (Option DeclarationRanges) := do
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let env ← getEnv
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if isAuxRecursor env declName || isNoConfusion env declName || (← isRec declName) then
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findDeclarationRangesCore? declName.getPrefix
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else
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findDeclarationRangesCore? declName
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end Lean
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