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Skip AddTyconRefsToNameEnv calc if tcrefs are empty #1959

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Dec 7, 2016
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3 changes: 2 additions & 1 deletion src/fsharp/NameResolution.fs
Original file line number Diff line number Diff line change
Expand Up @@ -630,7 +630,8 @@ let TryFindPatternByName name {ePatItems = patternMap} =
NameMap.tryFind name patternMap

/// Add a set of type definitions to the name resolution environment
let AddTyconRefsToNameEnv bulkAddMode ownDefinition g amap m root nenv tcrefs =
let AddTyconRefsToNameEnv bulkAddMode ownDefinition g amap m root nenv tcrefs =
if isNil tcrefs then nenv else
let env = List.fold (AddPartsOfTyconRefToNameEnv bulkAddMode ownDefinition g amap m) nenv tcrefs
// Add most of the contents of the tycons en-masse, then flatten the tables if we're opening a module or namespace
let tcrefs = Array.ofList tcrefs
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