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Incremental builder: fix exception when source files list is empty #16314

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Merged
merged 2 commits into from
Nov 21, 2023
Merged

Incremental builder: fix exception when source files list is empty #16314

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f892850
draft
majocha Nov 20, 2023
d9e0272
Merge branch 'main' into fix-empty-builder
majocha Nov 21, 2023
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10 changes: 2 additions & 8 deletions src/Compiler/Service/IncrementalBuild.fs
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Original file line number Diff line number Diff line change
Expand Up @@ -725,7 +725,7 @@ module IncrementalBuilderHelpers =
}

/// Finish up the typechecking to produce outputs for the rest of the compilation process
let FinalizeTypeCheckTask (tcConfig: TcConfig) tcGlobals partialCheck assemblyName outfile (initialErrors: SingleFileDiagnostics) (boundModels: GraphNode<BoundModel> seq) =
let FinalizeTypeCheckTask (tcConfig: TcConfig) tcGlobals partialCheck assemblyName outfile (boundModels: GraphNode<BoundModel> seq) =
node {
let diagnosticsLogger = CompilationDiagnosticLogger("FinalizeTypeCheckTask", tcConfig.diagnosticsOptions)
use _ = new CompilationGlobalsScope(diagnosticsLogger, BuildPhase.TypeCheck)
Expand Down Expand Up @@ -820,7 +820,6 @@ module IncrementalBuilderHelpers =
let diagnostics = [
diagnosticsLogger.GetDiagnostics()
yield! partialDiagnostics |> Seq.rev
initialErrors
]

let! finalBoundModelWithErrors = finalBoundModel.Finish(diagnostics, Some topAttrs)
Expand Down Expand Up @@ -927,7 +926,6 @@ type IncrementalBuilderState =
{
slots: Slot list
stampedReferencedAssemblies: ImmutableArray<DateTime>
initialBoundModel: GraphNode<BoundModel>
finalizedBoundModel: GraphNode<(ILAssemblyRef * ProjectAssemblyDataResult * CheckedImplFile list option * BoundModel) * DateTime>
}
member this.stampedFileNames = this.slots |> List.map (fun s -> s.Stamp)
Expand All @@ -949,15 +947,13 @@ module IncrementalBuilderStateHelpers =
let createFinalizeBoundModelGraphNode (initialState: IncrementalBuilderInitialState) (boundModels: GraphNode<BoundModel> seq) =
GraphNode(node {
use _ = Activity.start "GetCheckResultsAndImplementationsForProject" [|Activity.Tags.project, initialState.outfile|]
let! initialErrors = initialState.initialBoundModel.Diagnostics.GetOrComputeValue()
let! result =
FinalizeTypeCheckTask
initialState.tcConfig
initialState.tcGlobals
initialState.enablePartialTypeChecking
initialState.assemblyName
initialState.outfile
initialErrors
boundModels
return result, DateTime.UtcNow
})
Expand Down Expand Up @@ -1060,11 +1056,10 @@ type IncrementalBuilderState with
let boundModels =
syntaxTrees
|> Seq.scan createBoundModelGraphNode initialBoundModel
|> Seq.skip 1

let slots =
[
for model, syntaxTree, hasSignature in Seq.zip3 boundModels syntaxTrees hasSignature do
for model, syntaxTree, hasSignature in Seq.zip3 (boundModels |> Seq.skip 1) syntaxTrees hasSignature do
{
HasSignature = hasSignature
Stamp = DateTime.MinValue
Expand All @@ -1079,7 +1074,6 @@ type IncrementalBuilderState with
{
slots = slots
stampedReferencedAssemblies = ImmutableArray.init referencedAssemblies.Length (fun _ -> DateTime.MinValue)
initialBoundModel = initialBoundModel
finalizedBoundModel = createFinalizeBoundModelGraphNode initialState boundModels
}
let state = computeStampedReferencedAssemblies initialState state false cache
Expand Down
15 changes: 15 additions & 0 deletions tests/service/ProjectAnalysisTests.fs
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Expand Up @@ -5751,3 +5751,18 @@ let ``References from #r nuget are included in script project options`` () =
|> Seq.distinct
printfn "%s" (assemblyNames |> String.concat "\n")
assemblyNames |> should contain "Dapper.dll"

module internal EmptyProject =
let base2 = tryCreateTemporaryFileName ()
let dllName = Path.ChangeExtension(base2, ".dll")
let projFileName = Path.ChangeExtension(base2, ".fsproj")

let fileNames = []
let args = mkProjectCommandLineArgs (dllName, fileNames)
let options = checker.GetProjectOptionsFromCommandLineArgs (projFileName, args)

[<Test>]
let ``Empty source list produces error FS0207`` () =
let results = checker.ParseAndCheckProject(EmptyProject.options) |> Async.RunImmediate
results.Diagnostics.Length |> shouldEqual 1
results.Diagnostics[0].ErrorNumber |> shouldEqual 207