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perf(Core): tweak tryFindTextOfRange #884

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Merged
knocte merged 1 commit into from
Sep 2, 2026
Merged

perf(Core): tweak tryFindTextOfRange #884

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16 changes: 9 additions & 7 deletions src/FSharpLint.Core/Framework/Utilities.fs
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Original file line number Diff line number Diff line change
Expand Up @@ -104,13 +104,15 @@ module ExpressionUtilities =

/// Tries to find the source code within a given range.
let tryFindTextOfRange (range:Range) (text:string) =
let maybeStartIndex = findPos range.Start text
let maybeEndIndex = findPos range.End text

match (maybeStartIndex, maybeEndIndex) with
| Some(startIndex), Some(endIndex) ->
text.Substring(startIndex, endIndex - startIndex) |> Some
| _ -> None
match findLineStart text range.Start.Line 1 0 with
| Some startLineOffset ->
match findLineStart text range.End.Line range.Start.Line startLineOffset with
| Some endLineOffset ->
let startIndex = startLineOffset + range.Start.Column
let endIndex = endLineOffset + range.End.Column
text.Substring(startIndex, endIndex - startIndex) |> Some
| None -> None
| None -> None

let getLeadingSpaces (range:Range) (text:string) =
let range = Range.mkRange String.Empty (Position.mkPos range.StartLine 0) range.End
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