[WIP] Add netcore using .NET CLI

[enricosada]

There are three issues:

• BinaryFormatters not supported by netcore afaik (it's used? or only the open namespace?)
• Configuration for appsettings, not supported by netcore afaik (maybe use Microsoft.Framework.Configuration package?
• a bug with overload resolution of fsc.exe, i think, i'll create an issue in visualfsharp

Only the bug with overload stop the build, i made the appsettings fail with not supported exception atm

I'll add appveyor build soon

But having .net cli installed (only windows works atm, there is a bug), from repo root

• dotnet restore
• cd src/Argu
• dotnet build

there is a temporary smoke test prject in src/Argu.Dotnetcli.Tests (it can be removed or moved after)

• cd src/Argu.Dotnetcli.Tests
• dotnet build --framework net46 to check net46 works
• ./bin/Debug/net46/win7-x64/Argu.Dotnetcli.Tests.exe to run it

when dnxcore works

• cd src/Argu.Dotnetcli.Tests
• dotnet run --framework dnxcore50

When everything is green, the built assembly can be added to current Argu nuget package for netcore framework

[enricosada]

the appveyor build error

Compiling Argu for DNXCore,Version=v5.0 
    'a     
 to 
    IArgParserTemplate    
involves an indeterminate type based on information prior to this program point. Runtime type tests are not allowed on some types. Further type annotations are needed. 
C:\projects\argu-6jatx\.dotnet\cli\bin\dotnet.exe compile-fsc @C:\projects\argu-6jatx\src\Argu\obj\Debug\dnxcore50\dotnet-compile.rsp returned Exit Code 1 
C:\projects\argu-6jatx\src\Argu\ArgInfo.fs(229,64): error FS0495: The member or object constructor 'PreComputeUnionConstructor' has no argument or settable return property 'bindingFlags'. The required signature is static member FSharpValue.PreComputeUnionConstructor : unionCase:UnionCaseInfo * ?allowAccessToPrivateRepresentation:bool -> (obj [] -> obj). 
C:\projects\argu-6jatx\src\Argu\ArgInfo.fs(233,9): error FS0008: This runtime coercion or type test from type 
C:\projects\argu-6jatx\src\Argu\UnParsers.fs(84,76): error FS0495: The member or object constructor 'GetUnionFields' has no argument or settable return property 'bindingFlags'. The required signature is static member FSharpValue.GetUnionFields : value:obj * unionType:Type * ?allowAccessToPrivateRepresentation:bool -> UnionCaseInfo * obj []. 
C:\projects\argu-6jatx\src\Argu\UnParsers.fs(92,25): error FS0752: The operator 'expr.[idx]' has been used on an object of indeterminate type based on information prior to this program point. Consider adding further type constraints 
C:\projects\argu-6jatx\src\Argu\UnParsers.fs(150,76): error FS0495: The member or object constructor 'GetUnionFields' has no argument or settable return property 'bindingFlags'. The required signature is static member FSharpValue.GetUnionFields : value:obj * unionType:Type * ?allowAccessToPrivateRepresentation:bool -> UnionCaseInfo * obj []. 
C:\projects\argu-6jatx\src\Argu\UnParsers.fs(158,20): error FS0072: Lookup on object of indeterminate type based on information prior to this program point. A type annotation may be needed prior to this program point to constrain the type of the object. This may allow the lookup to be resolved. 
C:\projects\argu-6jatx\src\Argu\ArgumentParser.fs(38,57): error FS0495: The member or object constructor 'IsUnion' has no argument or settable return property 'bindingFlags'. The required signature is static member FSharpType.IsUnion : typ:Type * ?allowAccessToPrivateRepresentation:bool -> bool. 
C:\projects\argu-6jatx\src\Argu\ArgumentParser.fs(42,53): error FS0495: The member or object constructor 'GetUnionCases' has no argument or settable return property 'bindingFlags'. The required signature is static member FSharpType.GetUnionCases : unionType:Type * ?allowAccessToPrivateRepresentation:bool -> UnionCaseInfo []. 

Compilation failed. 
    0 Warning(s) 
    8 Error(s) 

the PreComputeUnionConstructor for example it's trying to use the wrong overload

Or someones has ideas? /cc @dsyme @KevinRansom

[eiriktsarpalis]

Hi Enrico,

The BinaryFormatter namespace declaration is indeed a leftover from a feature that has long been removed. You can safely remove it.

Regarding AppSettings, I think it would be best if all the relevant API was cleared off for CLR builds, as opposed to raising NotSupportedExceptions in the midst of execution.

[enricosada]

ok about binaryformatter, one #ifdef less 😄

i'll ifdef the whole appsettings api out instead of throw. I was asking because maybe you had a replacement in mind, but remove it it's safer atm

the overload bug is something i dont know how to workaround, if noone find an idea we need to wait the fix of fsc

[eiriktsarpalis]

#46

[enricosada]

closed in favor of #57