Microsoft.DotNet.GenAPI.targets

<?xml version="1.0" encoding="utf-8"?>
<Project ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

  <PropertyGroup>
    <!-- If ToolHostCmd is undefined, we default to assuming 'dotnet' is on the path -->
    <ToolHostCmd Condition="'$(ToolHostCmd)' == ''">dotnet</ToolHostCmd>

    <GenAPITargetPath Condition="'$(GenAPITargetPath)' == ''">$(TargetDir)$(TargetName).cs</GenAPITargetPath>
    <_GenAPIPath Condition="'$(MSBuildRuntimeType)' == 'core'">$(MSBuildThisFileDirectory)\..\tools\netcoreapp2.1\Microsoft.DotNet.GenAPI.dll</_GenAPIPath>
    <_GenAPIPath Condition="'$(MSBuildRuntimeType)' != 'core'">$(MSBuildThisFileDirectory)\..\tools\net472\Microsoft.DotNet.GenAPI.exe</_GenAPIPath>

    <_GenAPICommand Condition="'$(MSBuildRuntimeType)' == 'core'">$(ToolHostCmd) "$(_GenAPIPath)"</_GenAPICommand>
    <_GenAPICommand Condition="'$(MSBuildRuntimeType)' != 'core' AND '$(OS)' == 'Windows_NT'">"$(_GenAPIPath)"</_GenAPICommand>
    <_GenAPICommand Condition="'$(MSBuildRuntimeType)' != 'core' AND '$(OS)' != 'Windows_NT'">mono --runtime=v4.0.30319 "$(_GenAPIPath)"</_GenAPICommand>

    <!-- Sequence ourselves last in PrepareForRun
         This ensures the output has been copied to TargetPath, but still permits
         us to participate in FileWrites. -->
    <PrepareForRunDependsOn Condition="'$(GenerateReferenceAssemblySource)' == 'true'">
      $(PrepareForRunDependsOn);
      GenerateReferenceAssemblySource;
    </PrepareForRunDependsOn>
  </PropertyGroup>

  <ItemGroup Condition="'$(GeneratePlatformNotSupportedAssembly)' == 'true' OR '$(GeneratePlatformNotSupportedAssemblyMessage)' != ''">
    <AssemblyMetadata Include="NotSupported">
      <Value>True</Value>
    </AssemblyMetadata>
  </ItemGroup>

  <Target Name="GenerateReferenceAssemblySource"
          Inputs="$(TargetPath)"
          Outputs="$(GenAPITargetPath)">

    <ItemGroup>
      <!-- build out a list of directories where dependencies are located -->
      <_referencePathDirectoriesWithDuplicates Include="@(ReferencePath->'%(RootDir)%(Directory)'->TrimEnd('\'))" />
      <!-- strip metadata, removing duplicates -->
      <_referencePathDirectories Include="%(_referencePathDirectoriesWithDuplicates.Identity)" />
    </ItemGroup>

    <Exec Command="$(_GenAPICommand) -assembly:&quot;$(TargetPath)&quot; -libPath:&quot;@(_referencePathDirectories)&quot; -out:&quot;$(GenAPITargetPath)&quot; $(GenAPIAdditionalParameters)" />

    <ItemGroup>
      <FileWrites Include="$(GenAPITargetPath)"/>
    </ItemGroup>
  </Target>

  <PropertyGroup Condition="'$(GeneratePlatformNotSupportedAssembly)' == 'true' OR '$(GeneratePlatformNotSupportedAssemblyMessage)' != ''">
    <!-- Tell ResolveMatchingContract to run and resolve contract to project reference -->
    <ResolveMatchingContract>true</ResolveMatchingContract>
    <NotSupportedSourceFile>$(IntermediateOutputPath)$(TargetName).notsupported.cs</NotSupportedSourceFile>
    <CoreCompileDependsOn>$(CoreCompileDependsOn);GenerateNotSupportedSource</CoreCompileDependsOn>
    <!-- Not supported sources are created from the ref assembly, we currently don't produce finalizers in dummmy assemblies, so we disable ApiCompat to not fail. -->
    <RunApiCompat>false</RunApiCompat>
  </PropertyGroup>

  <!-- GenerateNotSupportedSource
       Inputs:
         * A contract assembly
         * Reference assemblies

       Generates source for the contract that throws PlatformNotSupportedException
  -->
  <Target Name="GenerateNotSupportedSource" 
          DependsOnTargets="ResolveMatchingContract"
          Inputs="@(ReferencePath);@(ResolvedMatchingContract)"
          Outputs="$(NotSupportedSourceFile)">

    <ItemGroup>
      <!-- build out a list of directories where dependencies are located -->
      <_referencePathDirectoriesWithDuplicates Include="@(ReferencePath->'%(RootDir)%(Directory)'->TrimEnd('\'))" />
      <!-- strip metadata, removing duplicates -->
      <_referencePathDirectories Include="%(_referencePathDirectoriesWithDuplicates.Identity)" />
    </ItemGroup>

    <Error Text="No single matching contract found." Condition="'@(ResolvedMatchingContract->Count())' != '1'" />

    <PropertyGroup>
      <GenAPIArgs>-assembly:"%(ResolvedMatchingContract.Identity)"</GenAPIArgs>
      <GenAPIArgs>$(GenAPIArgs) -libPath:"@(_referencePathDirectories)"</GenAPIArgs>
      <GenAPIArgs>$(GenAPIArgs) -out:"$(NotSupportedSourceFile)"</GenAPIArgs>
      <GenAPIArgs Condition="'$(GeneratePlatformNotSupportedAssembly)' == 'true' OR '$(GeneratePlatformNotSupportedAssemblyMessage)' != ''">$(GenAPIArgs) -throw:"$(GeneratePlatformNotSupportedAssemblyMessage)"</GenAPIArgs>
      <GenAPIArgs Condition="'$(GeneratePlatformNotSupportedAssemblyWithGlobalPrefix)' == 'true'">$(GenAPIArgs) -global</GenAPIArgs>
    </PropertyGroup>

    <Exec Command="$(_GenAPICommand) $(GenAPIArgs)" WorkingDirectory="$(ToolRuntimePath)" />

    <ItemGroup>
      <FileWrites Include="$(NotSupportedSourceFile)" />
      <Compile Include="$(NotSupportedSourceFile)" />
    </ItemGroup>
  </Target>

</Project>