resolveContract.targets

<Project>
  <PropertyGroup>
    <ContractDependencyPaths Condition="'$(DisableImplicitFrameworkReferences)' == 'true' and
                                        '$(TargetFrameworkIdentifier)' == '.NETCoreApp'">$(MicrosoftNetCoreAppRefPackRefDir)</ContractDependencyPaths>
    <!-- Use implementation referencepath if no contract tfm is set. -->
    <ContractDependencyPaths Condition="'$(ContractDependencyPaths)' == ''">$(ContractDependencyPaths);@(ReferencePath->'%(RelativeDir)'->Distinct())</ContractDependencyPaths>
  </PropertyGroup>

  <PropertyGroup Condition="'$(IsSourceProject)' == 'true'">
    <ContractProject Condition="'$(ContractProject)' == ''">$(LibrariesProjectRoot)$(MSBuildProjectName)\ref\$(MSBuildProjectName).csproj</ContractProject>
    <HasMatchingContract Condition="'$(HasMatchingContract)' == '' and Exists('$(ContractProject)')">true</HasMatchingContract>
    <ContractAssemblyPath Condition="'$(ContractAssemblyPath)' == '' and
                                     '$(TargetFrameworkIdentifier)' == '.NETCoreApp' and
                                     $([MSBuild]::VersionGreaterThanOrEquals($(TargetFrameworkVersion), '$(NETCoreAppCurrentVersion)'))">$(NetCoreAppCurrentRefPath)$(TargetFileName)</ContractAssemblyPath>
    <ContractAssemblyPath Condition="'$(ContractAssemblyPath)' == ''">$([MSBuild]::NormalizePath('$(BaseOutputPath)', 'ref', '$(TargetFramework)-$(Configuration)', '$(TargetFileName)'))</ContractAssemblyPath>

    <!-- Disable API compat if the project doesn't have reference assembly -->
    <RunApiCompat Condition="'$(HasMatchingContract)' != 'true'">false</RunApiCompat>
  </PropertyGroup>

  <ItemGroup Condition="'$(HasMatchingContract)' == 'true'">
    <ResolvedMatchingContract Condition="Exists('$(ContractAssemblyPath)')" Include="$(ContractAssemblyPath)" />
    <!-- If the contract doesn't exist in the default contract output path add a project reference to the contract project to resolve -->
    <ProjectReference Condition="'@(ResolvedMatchingContract)' == ''" Include="$(ContractProject)">
      <ReferenceOutputAssembly>false</ReferenceOutputAssembly>
      <OutputItemType>ResolvedMatchingContract</OutputItemType>
    </ProjectReference>
  </ItemGroup>

  <!-- intentionally empty since we no longer need a target -->
  <Target Name="ResolveMatchingContract" />

  <!-- Allow P2Ps that target a source project to build against the corresponding ref project. -->
  <Target Name="AnnotateTargetPathWithTargetPlatformMonikerWithReferenceAssembly"
          Condition="'$(HasMatchingContract)' == 'true'"
          AfterTargets="GetTargetPathWithTargetPlatformMoniker">
    <ItemGroup>
      <TargetPathWithTargetPlatformMoniker ReferenceAssembly="@(ResolvedMatchingContract)" />
    </ItemGroup>
  </Target>

  <Target Name="HandleReferenceAssemblyAttributeForProjectReferences"
          AfterTargets="ResolveProjectReferences"
          BeforeTargets="FindReferenceAssembliesForReferences"
          Condition="'@(ProjectReference)' != '' and '@(_ResolvedProjectReferencePaths)' != ''">
    <!-- If we have a ProjectReference to CoreLib, we need to compile against implementation assemblies. -->
    <PropertyGroup Condition="@(_ResolvedProjectReferencePaths->AnyHaveMetadataValue('MSBuildSourceProjectFile', '$(CoreLibProject)'))">
      <CompileUsingReferenceAssemblies>false</CompileUsingReferenceAssemblies>
    </PropertyGroup>
    <!-- Clear the ReferenceAssembly attribute on resolved P2Ps that set SkipUseReferenceAssembly to true. -->
    <ItemGroup>
       <_resolvedP2PFiltered Include="@(ProjectReference)">
        <ProjectReferenceItemSpec>$([System.IO.Path]::GetFullPath('%(ProjectReference.Identity)'))</ProjectReferenceItemSpec>
        <SkipUseReferenceAssembly>%(ProjectReference.SkipUseReferenceAssembly)</SkipUseReferenceAssembly>
      </_resolvedP2PFiltered>
      <_ResolvedProjectReferencePaths Update="@(_resolvedProjectReferenceFiltred)"
                                      Condition="'%(_resolvedP2PFiltered.ProjectReferenceItemSpec)' == '%(_resolvedP2PFiltered.MSBuildSourceProjectFile)' and
                                                 '%(_resolvedP2PFiltered.SkipUseReferenceAssembly)' == 'true'"
                                      ReferenceAssembly="" />
    </ItemGroup>
  </Target>
</Project>