private async Task <ResolvedReferences> ResolveReferencesAsync(ProjectId id, ProjectFileInfo projectFileInfo, CommandLineArguments commandLineArgs, CancellationToken cancellationToken)
{
// First, gather all of the metadata references from the command-line arguments.
var resolvedMetadataReferences = commandLineArgs.ResolveMetadataReferences(
new WorkspaceMetadataFileReferenceResolver(
metadataService: GetWorkspaceService <IMetadataService>(),
pathResolver: new RelativePathResolver(commandLineArgs.ReferencePaths, commandLineArgs.BaseDirectory)));
var builder = new ResolvedReferencesBuilder(resolvedMetadataReferences);
var projectDirectory = Path.GetDirectoryName(projectFileInfo.FilePath);
// Next, iterate through all project references in the file and create project references.
foreach (var projectFileReference in projectFileInfo.ProjectReferences)
{
var aliases = projectFileReference.Aliases;
if (_pathResolver.TryGetAbsoluteProjectPath(projectFileReference.Path, baseDirectory: projectDirectory, _discoveredProjectOptions.OnPathFailure, out var projectReferencePath))
{
// The easiest case is to add a reference to a project we already know about.
if (TryAddReferenceToKnownProject(id, projectReferencePath, aliases, builder))
{
continue;
}
// If we don't know how to load a project (that is, it's not a language we support), we can still
// attempt to verify that its output exists on disk and is included in our set of metadata references.
// If it is, we'll just leave it in place.
if (!IsProjectLoadable(projectReferencePath) &&
await VerifyUnloadableProjectOutputExistsAsync(projectReferencePath, builder, cancellationToken).ConfigureAwait(false))
{
continue;
}
// If metadata is preferred, see if the project reference's output exists on disk and is included
// in our metadata references. If it is, don't create a project reference; we'll just use the metadata.
if (_preferMetadataForReferencesOfDiscoveredProjects &&
await VerifyProjectOutputExistsAsync(projectReferencePath, builder, cancellationToken).ConfigureAwait(false))
{
continue;
}
// Finally, we'll try to load and reference the project.
if (await TryLoadAndAddReferenceAsync(id, projectReferencePath, aliases, builder, cancellationToken).ConfigureAwait(false))
{
continue;
}
}
// We weren't able to handle this project reference, so add it without further processing.
var unknownProjectId = _projectMap.GetOrCreateProjectId(projectFileReference.Path);
var newProjectReference = CreateProjectReference(from: id, to: unknownProjectId, aliases);
builder.AddProjectReference(newProjectReference);
}
return(builder.ToResolvedReferences());
}
private static ResolvedReferences ResolveReferencesAsync(ProjectId id, ProjectFileInfo projectFileInfo, CommandLineArguments commandLineArgs)
{
// First, gather all of the metadata references from the command-line arguments.
var resolvedMetadataReferences = commandLineArgs.ResolveMetadataReferences(
new WorkspaceMetadataFileReferenceResolver(
metadataService: _metadataService,
pathResolver: new RelativePathResolver(commandLineArgs.ReferencePaths, commandLineArgs.BaseDirectory)));
var builder = new ResolvedReferencesBuilder(resolvedMetadataReferences);
var projectDirectory = Path.GetDirectoryName(projectFileInfo.FilePath);
return(builder.ToResolvedReferences());
}