private void ScanLibraries(LockFileTarget target,
                                   LockFileLookup lockFileLookup,
                                   Dictionary <LibraryKey, LibraryDescription> libraries,
                                   MSBuildDependencyProvider msbuildResolver,
                                   PackageDependencyProvider packageResolver,
                                   ProjectDependencyProvider projectResolver)
        {
            foreach (var library in target.Libraries)
            {
                LibraryDescription      description = null;
                LibraryDependencyTarget type        = LibraryDependencyTarget.All;

                if (string.Equals(library.Type, "project"))
                {
                    var projectLibrary = lockFileLookup.GetProject(library.Name);

                    if (projectLibrary != null)
                    {
                        if (MSBuildDependencyProvider.IsMSBuildProjectLibrary(projectLibrary))
                        {
                            description = msbuildResolver.GetDescription(TargetFramework, projectLibrary, library, IsDesignTime);
                            type        = LibraryDependencyTarget.Project;
                        }
                        else
                        {
                            var path = Path.GetFullPath(Path.Combine(ProjectDirectory, projectLibrary.Path));
                            description = projectResolver.GetDescription(library.Name, path, library, ProjectResolver);
                            type        = LibraryDependencyTarget.Project;
                        }
                    }
                }
                else
                {
                    var packageEntry = lockFileLookup.GetPackage(library.Name, library.Version);

                    if (packageEntry != null)
                    {
                        description = packageResolver.GetDescription(TargetFramework, packageEntry, library);
                    }

                    type = LibraryDependencyTarget.Package;
                }

                description = description ??
                              UnresolvedDependencyProvider.GetDescription(
                    new ProjectLibraryDependency
                {
                    LibraryRange = new LibraryRange(library.Name, type)
                },
                    target.TargetFramework);

                libraries.Add(new LibraryKey(library.Name), description);
            }
        }
 internal ProjectContext(
     GlobalSettings globalSettings,
     ProjectDescription rootProject,
     LibraryDescription platformLibrary,
     NuGetFramework targetFramework,
     bool isPortable,
     string runtimeIdentifier,
     string packagesDirectory,
     LibraryManager libraryManager,
     LockFile lockfile,
     List <DiagnosticMessage> diagnostics)
 {
     Identity          = new ProjectContextIdentity(rootProject?.Path, targetFramework);
     GlobalSettings    = globalSettings;
     RootProject       = rootProject;
     PlatformLibrary   = platformLibrary;
     TargetFramework   = targetFramework;
     RuntimeIdentifier = runtimeIdentifier;
     PackagesDirectory = packagesDirectory;
     LibraryManager    = libraryManager;
     LockFile          = lockfile;
     IsPortable        = isPortable;
     Diagnostics       = diagnostics;
 }
        public ProjectContext Build()
        {
            var diagnostics = new List <DiagnosticMessage>();

            ProjectDirectory = Project?.ProjectDirectory ?? ProjectDirectory;

            GlobalSettings globalSettings = null;

            if (ProjectDirectory != null)
            {
                RootDirectory = ProjectRootResolver.ResolveRootDirectory(ProjectDirectory);
                GlobalSettings.TryGetGlobalSettings(RootDirectory, out globalSettings);
            }

            RootDirectory = globalSettings?.DirectoryPath ?? RootDirectory;

            FrameworkReferenceResolver frameworkReferenceResolver;

            if (string.IsNullOrEmpty(ReferenceAssembliesPath))
            {
                // Use the default static resolver
                frameworkReferenceResolver = FrameworkReferenceResolver.Default;
            }
            else
            {
                frameworkReferenceResolver = new FrameworkReferenceResolver(ReferenceAssembliesPath);
            }

            LockFileLookup lockFileLookup = null;

            EnsureProjectLoaded();

            ReadLockFile(diagnostics);

            // some callers only give ProjectContextBuilder a LockFile
            ProjectDirectory = ProjectDirectory ?? TryGetProjectDirectoryFromLockFile();

            INuGetPathContext nugetPathContext = null;

            if (ProjectDirectory != null)
            {
                nugetPathContext = NuGetPathContext.Create(ProjectDirectory);
            }

            PackagesDirectory = PackagesDirectory ?? nugetPathContext?.UserPackageFolder;

            var    validLockFile             = true;
            string lockFileValidationMessage = null;

            if (LockFile != null)
            {
                if (Project != null)
                {
                    validLockFile = LockFile.IsValidForProject(Project, out lockFileValidationMessage);
                }

                lockFileLookup = new LockFileLookup(LockFile);
            }

            var libraries       = new Dictionary <LibraryKey, LibraryDescription>();
            var projectResolver = new ProjectDependencyProvider(ProjectResolver);

            ProjectDescription mainProject = null;

            if (Project != null)
            {
                mainProject = projectResolver.GetDescription(TargetFramework, Project, targetLibrary: null);

                // Add the main project
                libraries.Add(new LibraryKey(mainProject.Identity.Name), mainProject);
            }

            ProjectLibraryDependency platformDependency = null;

            if (mainProject != null)
            {
                platformDependency = mainProject.Dependencies
                                     .Where(d => d.Type.Equals(LibraryDependencyType.Platform))
                                     .Cast <ProjectLibraryDependency>()
                                     .FirstOrDefault();
            }
            bool isPortable = platformDependency != null;

            LockFileTarget     target          = null;
            LibraryDescription platformLibrary = null;

            if (lockFileLookup != null)
            {
                target = SelectTarget(LockFile, isPortable);
                if (target != null)
                {
                    var nugetPackageResolver   = new PackageDependencyProvider(nugetPathContext, frameworkReferenceResolver);
                    var msbuildProjectResolver = new MSBuildDependencyProvider(Project, ProjectResolver);
                    ScanLibraries(target, lockFileLookup, libraries, msbuildProjectResolver, nugetPackageResolver, projectResolver);

                    if (platformDependency != null)
                    {
                        libraries.TryGetValue(new LibraryKey(platformDependency.Name), out platformLibrary);
                    }
                }
            }

            string runtime = target?.RuntimeIdentifier;

            if (string.IsNullOrEmpty(runtime) && TargetFramework.IsDesktop())
            {
                // we got a ridless target for desktop so turning portable mode on
                isPortable = true;
                var legacyRuntime = RuntimeEnvironmentRidExtensions.GetLegacyRestoreRuntimeIdentifier();
                if (RuntimeIdentifiers.Contains(legacyRuntime))
                {
                    runtime = legacyRuntime;
                }
                else
                {
                    runtime = RuntimeIdentifiers.FirstOrDefault();
                }
            }

            var  referenceAssemblyDependencyResolver = new ReferenceAssemblyDependencyResolver(frameworkReferenceResolver);
            bool requiresFrameworkAssemblies;

            // Resolve the dependencies
            ResolveDependencies(libraries, referenceAssemblyDependencyResolver, out requiresFrameworkAssemblies);

            // REVIEW: Should this be in NuGet (possibly stored in the lock file?)
            if (LockFile == null)
            {
                diagnostics.Add(new DiagnosticMessage(
                                    ErrorCodes.NU1009,
                                    $"The expected lock file doesn't exist. Please run \"dotnet restore\" to generate a new lock file.",
                                    Path.Combine(Project.ProjectDirectory, LockFileFormat.LockFileName),
                                    DiagnosticMessageSeverity.Error));
            }

            if (!validLockFile)
            {
                diagnostics.Add(new DiagnosticMessage(
                                    ErrorCodes.NU1006,
                                    $"{lockFileValidationMessage}. Please run \"dotnet restore\" to generate a new lock file.",
                                    Path.Combine(Project.ProjectDirectory, LockFileFormat.LockFileName),
                                    DiagnosticMessageSeverity.Warning));
            }

            if (requiresFrameworkAssemblies)
            {
                var frameworkInfo = Project.GetTargetFramework(TargetFramework);

                if (frameworkReferenceResolver == null || string.IsNullOrEmpty(frameworkReferenceResolver.ReferenceAssembliesPath))
                {
                    // If there was an attempt to use reference assemblies but they were not installed
                    // report an error
                    diagnostics.Add(new DiagnosticMessage(
                                        ErrorCodes.DOTNET1012,
                                        $"The reference assemblies directory was not specified. You can set the location using the DOTNET_REFERENCE_ASSEMBLIES_PATH environment variable.",
                                        filePath: Project.ProjectFilePath,
                                        severity: DiagnosticMessageSeverity.Error,
                                        startLine: frameworkInfo.Line,
                                        startColumn: frameworkInfo.Column
                                        ));
                }
                else if (!frameworkReferenceResolver.IsInstalled(TargetFramework))
                {
                    // If there was an attempt to use reference assemblies but they were not installed
                    // report an error
                    diagnostics.Add(new DiagnosticMessage(
                                        ErrorCodes.DOTNET1011,
                                        $"Framework not installed: {TargetFramework.DotNetFrameworkName} in {ReferenceAssembliesPath}",
                                        filePath: Project.ProjectFilePath,
                                        severity: DiagnosticMessageSeverity.Error,
                                        startLine: frameworkInfo.Line,
                                        startColumn: frameworkInfo.Column
                                        ));
                }
            }

            List <DiagnosticMessage> allDiagnostics = new List <DiagnosticMessage>(diagnostics);

            if (Project != null)
            {
                allDiagnostics.AddRange(Project.Diagnostics);
            }

            // Create a library manager
            var libraryManager = new LibraryManager(libraries.Values.ToList(), allDiagnostics, Project?.ProjectFilePath);

            return(new ProjectContext(
                       globalSettings,
                       mainProject,
                       platformLibrary,
                       TargetFramework,
                       isPortable,
                       runtime,
                       PackagesDirectory,
                       libraryManager,
                       LockFile,
                       diagnostics));
        }