/// <summary>
/// Gets a metadata reference to the metadata-only-image corresponding to the compilation.
/// </summary>
private async Task <MetadataReference> GetMetadataOnlyImageReferenceAsync(
Solution solution, ProjectReference projectReference, CancellationToken cancellationToken)
{
try
{
using (Logger.LogBlock(FunctionId.Workspace_SkeletonAssembly_GetMetadataOnlyImage, cancellationToken))
{
var projectId = this.ProjectState.Id;
var version = await this.GetDependentSemanticVersionAsync(solution, cancellationToken).ConfigureAwait(false);
// get or build compilation up to declaration state. this compilation will be used to provide live xml doc comment
var declarationCompilation = await this.GetOrBuildDeclarationCompilationAsync(solution, cancellationToken : cancellationToken).ConfigureAwait(false);
MetadataReference reference;
if (!MetadataOnlyReference.TryGetReference(solution, projectReference, declarationCompilation, version, out reference))
{
// using async build lock so we don't get multiple consumers attempting to build metadata-only images for the same compilation.
using (await _buildLock.DisposableWaitAsync(cancellationToken).ConfigureAwait(false))
{
// okay, we still don't have one. bring the compilation to final state since we are going to use it to create skeleton assembly
var compilationInfo = await this.GetOrBuildCompilationInfoAsync(solution, lockGate : false, cancellationToken : cancellationToken).ConfigureAwait(false);
reference = MetadataOnlyReference.GetOrBuildReference(solution, projectReference, compilationInfo.Compilation, version, cancellationToken);
}
}
return(reference);
}
}
catch (Exception e) when(FatalError.ReportUnlessCanceled(e))
{
throw ExceptionUtilities.Unreachable;
}
}
public async Task <MetadataReference> GetMetadataReferenceAsync(SolutionState solution, ProjectState fromProject, ProjectReference projectReference, CancellationToken cancellationToken)
{
var compilation = await GetCompilationAsync(solution, cancellationToken).ConfigureAwait(false);
// If it's the same language we can just make a CompilationReference
if (this.ProjectState.LanguageServices == fromProject.LanguageServices)
{
return(compilation.ToMetadataReference(projectReference.Aliases, projectReference.EmbedInteropTypes));
}
else
{
var version = await GetDependentSemanticVersionAsync(solution, cancellationToken).ConfigureAwait(false);
return(MetadataOnlyReference.GetOrBuildReference(solution, projectReference, compilation, version, cancellationToken));
}
}
