!> # Dependency management !> !> ## Fetching dependencies and creating a dependency tree !> !> Dependencies on the top-level can be specified from: !> !> - `package%dependencies` !> - `package%dev_dependencies` !> - `package%executable(:)%dependencies` !> - `package%test(:)%dependencies` !> !> Each dependency is fetched in some way and provides a path to its package !> manifest. !> The `package%dependencies` of the dependencies are resolved recursively. !> !> To initialize the dependency tree all dependencies are recursively fetched !> and stored in a flat data structure to avoid retrieving a package twice. !> The data structure used to store this information should describe the current !> status of the dependency tree. Important information are: !> !> - name of the package !> - version of the package !> - path to the package root !> !> Additionally, for version controlled dependencies the following should be !> stored along with the package: !> !> - the upstream url !> - the current checked out revision !> !> Fetching a remote (version controlled) dependency turns it for our purpose !> into a local path dependency which is handled by the same means. !> !> ## Updating dependencies !> !> For a given dependency tree all top-level dependencies can be updated. !> We have two cases to consider, a remote dependency and a local dependency, !> again, remote dependencies turn into local dependencies by fetching. !> Therefore we will update remote dependencies by simply refetching them. !> !> For remote dependencies we have to refetch if the revision in the manifest !> changes or the upstream HEAD has changed (for branches _and_ tags). !> !> @Note For our purpose a tag is just a fancy branch name. Tags can be delete and !> modified afterwards, therefore they do not differ too much from branches !> from our perspective. !> !> For the latter case we only know if we actually fetch from the upstream URL. !> !> In case of local (and fetched remote) dependencies we have to read the package !> manifest and compare its dependencies against our dependency tree, any change !> requires updating the respective dependencies as well. !> !> ## Handling dependency compatibilties !> !> Currenly ignored. First come, first serve. module fpm_dependency use, intrinsic :: iso_fortran_env, only: output_unit use fpm_environment, only: get_os_type, OS_WINDOWS, os_is_unix use fpm_error, only: error_t, fatal_error use fpm_filesystem, only: exists, join_path, mkdir, canon_path, windows_path, list_files, is_dir, basename, & os_delete_dir, get_temp_filename, parent_dir use fpm_git, only: git_target_revision, git_target_default, git_revision, serializable_t use fpm_manifest, only: package_config_t, dependency_config_t, get_package_data, get_package_dependencies use fpm_manifest_dependency, only: manifest_has_changed, dependency_destroy use fpm_manifest_preprocess, only: operator(==) use fpm_strings, only: string_t, operator(.in.), operator(==), str use tomlf, only: toml_table, toml_key, toml_error, toml_load, toml_stat, toml_array, len, add_array use fpm_toml, only: toml_serialize, get_value, set_value, add_table, set_string, get_list, set_list use fpm_versioning, only: version_t, new_version use fpm_settings, only: fpm_global_settings, get_global_settings, official_registry_base_url use fpm_downloader, only: downloader_t use jonquil, only: json_object implicit none private public :: dependency_tree_t, new_dependency_tree, dependency_node_t, new_dependency_node, resize, & & check_and_read_pkg_data, destroy_dependency_node !> Overloaded reallocation interface interface resize module procedure :: resize_dependency_node end interface resize !> Dependency node in the projects dependency tree type, extends(dependency_config_t) :: dependency_node_t !> Actual version of this dependency type(version_t), allocatable :: version !> Installation prefix of this dependencies character(len=:), allocatable :: proj_dir !> Checked out revision of the version control system character(len=:), allocatable :: revision !> Dependency is handled logical :: done = .false. !> Dependency should be updated logical :: update = .false. !> Dependency was loaded from a cache logical :: cached = .false. !> Package dependencies of this node type(string_t), allocatable :: package_dep(:) contains !> Update dependency from project manifest. procedure :: register !> Get dependency from the registry. procedure :: get_from_registry procedure, private :: get_from_local_registry !> Print information on this instance procedure :: info !> Serialization interface procedure :: serializable_is_same => dependency_node_is_same procedure :: dump_to_toml => node_dump_to_toml procedure :: load_from_toml => node_load_from_toml end type dependency_node_t !> Respresentation of a projects dependencies !> !> The dependencies are stored in a simple array for now, this can be replaced !> with a binary-search tree or a hash table in the future. type, extends(serializable_t) :: dependency_tree_t !> Unit for IO integer :: unit = output_unit !> Verbosity of printout integer :: verbosity = 1 !> Installation prefix for dependencies character(len=:), allocatable :: dep_dir !> Number of currently registered dependencies integer :: ndep = 0 !> Flattend list of all dependencies type(dependency_node_t), allocatable :: dep(:) !> Cache file character(len=:), allocatable :: cache !> Custom path to the global config file character(len=:), allocatable :: path_to_config contains !> Overload procedure to add new dependencies to the tree generic :: add => add_project, add_project_dependencies, add_dependencies, & add_dependency, add_dependency_node !> Main entry point to add a project procedure, private :: add_project !> Add a project and its dependencies to the dependency tree procedure, private :: add_project_dependencies !> Add a list of dependencies to the dependency tree procedure, private :: add_dependencies !> Add a single dependency to the dependency tree procedure, private :: add_dependency !> Add a single dependency node to the dependency tree procedure, private :: add_dependency_node !> Resolve dependencies generic :: resolve => resolve_dependencies, resolve_dependency !> Resolve dependencies procedure, private :: resolve_dependencies !> Resolve dependency procedure, private :: resolve_dependency !> True if entity can be found generic :: has => has_dependency !> True if dependency is part of the tree procedure, private :: has_dependency !> Find a dependency in the tree generic :: find => find_name !> Find a dependency by its name procedure, private :: find_name !> Establish local link order for a node's package dependencies procedure :: local_link_order !> Depedendncy resolution finished procedure :: finished !> Reading of dependency tree generic :: load_cache => load_cache_from_file, load_cache_from_unit, load_cache_from_toml !> Read dependency tree from file procedure, private :: load_cache_from_file !> Read dependency tree from formatted unit procedure, private :: load_cache_from_unit !> Read dependency tree from TOML data structure procedure, private :: load_cache_from_toml !> Writing of dependency tree generic :: dump_cache => dump_cache_to_file, dump_cache_to_unit, dump_cache_to_toml !> Write dependency tree to file procedure, private :: dump_cache_to_file !> Write dependency tree to formatted unit procedure, private :: dump_cache_to_unit !> Write dependency tree to TOML data structure procedure, private :: dump_cache_to_toml !> Update dependency tree generic :: update => update_dependency, update_tree !> Update a list of dependencies procedure, private :: update_dependency !> Update all dependencies in the tree procedure, private :: update_tree !> Serialization interface procedure :: serializable_is_same => dependency_tree_is_same procedure :: dump_to_toml => tree_dump_to_toml procedure :: load_from_toml => tree_load_from_toml end type dependency_tree_t !> Common output format for writing to the command line character(len=*), parameter :: out_fmt = '("#", *(1x, g0))' contains !> Create a new dependency tree subroutine new_dependency_tree(self, verbosity, cache, path_to_config) !> Instance of the dependency tree type(dependency_tree_t), intent(out) :: self !> Verbosity of printout integer, intent(in), optional :: verbosity !> Name of the cache file character(len=*), intent(in), optional :: cache !> Path to the global config file. character(len=*), intent(in), optional :: path_to_config call resize(self%dep) self%dep_dir = join_path("build", "dependencies") if (present(verbosity)) self%verbosity = verbosity if (present(cache)) self%cache = cache if (present(path_to_config)) self%path_to_config = path_to_config end subroutine new_dependency_tree !> Create a new dependency node from a configuration subroutine new_dependency_node(self, dependency, version, proj_dir, update) !> Instance of the dependency node type(dependency_node_t), intent(out) :: self !> Dependency configuration data type(dependency_config_t), intent(in) :: dependency !> Version of the dependency type(version_t), intent(in), optional :: version !> Installation prefix of the dependency character(len=*), intent(in), optional :: proj_dir !> Dependency should be updated logical, intent(in), optional :: update self%dependency_config_t = dependency if (present(version)) then self%version = version end if if (present(proj_dir)) then self%proj_dir = proj_dir end if if (present(update)) then self%update = update end if end subroutine new_dependency_node !> Write information on instance subroutine info(self, unit, verbosity) !> Instance of the dependency configuration class(dependency_node_t), intent(in) :: self !> Unit for IO integer, intent(in) :: unit !> Verbosity of the printout integer, intent(in), optional :: verbosity integer :: pr, i character(len=*), parameter :: fmt = '("#", 1x, a, t30, a)' if (present(verbosity)) then pr = verbosity else pr = 1 end if !> Call base object info call self%dependency_config_t%info(unit, pr) if (allocated(self%version)) then write (unit, fmt) "- version", self%version%s() end if if (allocated(self%proj_dir)) then write (unit, fmt) "- dir", self%proj_dir end if if (allocated(self%revision)) then write (unit, fmt) "- revision", self%revision end if write (unit, fmt) "- done", merge('YES', 'NO ', self%done) write (unit, fmt) "- update", merge('YES', 'NO ', self%update) if (allocated(self%package_dep)) then write(unit, fmt) " - package_dep " do i = 1, size(self%package_dep) write(unit, fmt) " - " // self%package_dep(i)%s end do end if end subroutine info !> Add project dependencies, each depth level after each other. !> !> We implement this algorithm in an interative rather than a recursive fashion !> as a choice of design. subroutine add_project(self, package, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Project configuration to add type(package_config_t), intent(in) :: package !> Error handling type(error_t), allocatable, intent(out) :: error type(dependency_config_t) :: dependency type(dependency_tree_t) :: cached character(len=*), parameter :: root = '.' integer :: id if (.not. exists(self%dep_dir)) then call mkdir(self%dep_dir) end if ! Create this project as the first dependency node (depth 0) dependency%name = package%name dependency%path = root call self%add(dependency, error) if (allocated(error)) return ! Resolve the root project call self%resolve(root, error) if (allocated(error)) return ! Add the root project dependencies (depth 1) call self%add(package, root, .true., error) if (allocated(error)) return ! After resolving all dependencies, check if we have cached ones to avoid updates if (allocated(self%cache)) then call new_dependency_tree(cached, verbosity=self%verbosity,cache=self%cache) call cached%load_cache(self%cache, error) if (allocated(error)) return ! Skip root node do id = 2, cached%ndep cached%dep(id)%cached = .true. call self%add(cached%dep(id), error) if (allocated(error)) return end do end if ! Now decent into the dependency tree, level for level do while (.not. self%finished()) call self%resolve(root, error) if (allocated(error)) exit end do if (allocated(error)) return ! Resolve internal dependency graph and remove temporary package storage call resolve_dependency_graph(self, package, error) if (allocated(error)) return if (allocated(self%cache)) then call self%dump_cache(self%cache, error) if (allocated(error)) return end if end subroutine add_project subroutine resolve_dependency_graph(self, main, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Main project configuration type(package_config_t), intent(in) :: main !> Error handling type(error_t), allocatable, intent(out) :: error integer :: i,nit integer, parameter :: MAXIT = 50 logical, allocatable :: finished(:) type(string_t), allocatable :: old_package_dep(:) if (self%ndep<1) then call fatal_error(error, "Trying to compute the dependency graph of an empty tree") return end if nit = 0 allocate(finished(self%ndep),source=.false.) do while (.not.all(finished) .and. nit<MAXIT) nit = nit+1 do i = 1, self%ndep ! Save old deps call move_alloc(from=self%dep(i)%package_dep,to=old_package_dep) call get_required_packages(self, i, error=error) if (allocated(error)) return finished(i) = all_alloc(self%dep(i)%package_dep, old_package_dep) end do end do if (nit>=MAXIT) call fatal_error(error, "Infinite loop detected computing the dependency graph") contains pure logical function all_alloc(this,that) type(string_t), intent(in), allocatable :: this(:),that(:) all_alloc = .false. if (allocated(this).neqv.allocated(that)) return if (.not.allocated(this)) then all_alloc = .true. else if (size(this)/=size(that)) return if (.not.(this==that)) return all_alloc = .true. end if end function all_alloc end subroutine resolve_dependency_graph !> Add a project and its dependencies to the dependency tree recursive subroutine add_project_dependencies(self, package, root, main, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Project configuration to add type(package_config_t), intent(in) :: package !> Current project root directory character(len=*), intent(in) :: root !> Is the main project logical, intent(in) :: main !> Error handling type(error_t), allocatable, intent(out) :: error integer :: ii if (allocated(package%dependency)) then call self%add(package%dependency, error) if (allocated(error)) return end if if (main) then if (allocated(package%dev_dependency)) then call self%add(package%dev_dependency, error) if (allocated(error)) return end if if (allocated(package%executable)) then do ii = 1, size(package%executable) if (allocated(package%executable(ii)%dependency)) then call self%add(package%executable(ii)%dependency, error) if (allocated(error)) exit end if end do if (allocated(error)) return end if if (allocated(package%example)) then do ii = 1, size(package%example) if (allocated(package%example(ii)%dependency)) then call self%add(package%example(ii)%dependency, error) if (allocated(error)) exit end if end do if (allocated(error)) return end if if (allocated(package%test)) then do ii = 1, size(package%test) if (allocated(package%test(ii)%dependency)) then call self%add(package%test(ii)%dependency, error) if (allocated(error)) exit end if end do if (allocated(error)) return end if end if !> Ensure allocation fits call resize(self%dep,self%ndep) end subroutine add_project_dependencies !> Add a list of dependencies to the dependency tree subroutine add_dependencies(self, dependency, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Dependency configuration to add type(dependency_config_t), intent(in) :: dependency(:) !> Error handling type(error_t), allocatable, intent(out) :: error integer :: ii, ndep ndep = size(self%dep) if (ndep < size(dependency) + self%ndep) then call resize(self%dep, ndep + ndep/2 + size(dependency)) end if do ii = 1, size(dependency) call self%add(dependency(ii), error) if (allocated(error)) exit end do if (allocated(error)) return !> Ensure allocation fits ndep call resize(self%dep,self%ndep) end subroutine add_dependencies !> Add a single dependency node to the dependency tree !> Dependency nodes contain additional information (version, git, revision) subroutine add_dependency_node(self, dependency, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Dependency configuration to add type(dependency_node_t), intent(in) :: dependency !> Error handling type(error_t), allocatable, intent(out) :: error integer :: id if (self%has_dependency(dependency)) then ! A dependency with this same name is already in the dependency tree. ! Check if it needs to be updated id = self%find(dependency%name) ! If this dependency was in the cache, and we're now requesting a different version ! in the manifest, ensure it is marked for update. Otherwise, if we're just querying ! the same dependency from a lower branch of the dependency tree, the existing one from ! the manifest has priority if (dependency%cached) then if (dependency_has_changed(dependency, self%dep(id), self%verbosity, self%unit)) then if (self%verbosity > 0) write (self%unit, out_fmt) "Dependency change detected:", dependency%name self%dep(id)%update = .true. else ! Store the cached one self%dep(id) = dependency self%dep(id)%update = .false. end if end if else !> Safety: reallocate if necessary if (size(self%dep)==self%ndep) call resize(self%dep,self%ndep+1) ! New dependency: add from scratch self%ndep = self%ndep + 1 self%dep(self%ndep) = dependency self%dep(self%ndep)%update = .false. end if end subroutine add_dependency_node !> Add a single dependency to the dependency tree subroutine add_dependency(self, dependency, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Dependency configuration to add type(dependency_config_t), intent(in) :: dependency !> Error handling type(error_t), allocatable, intent(out) :: error type(dependency_node_t) :: node call new_dependency_node(node, dependency) call add_dependency_node(self, node, error) end subroutine add_dependency !> Update dependency tree subroutine update_dependency(self, name, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Name of the dependency to update character(len=*), intent(in) :: name !> Error handling type(error_t), allocatable, intent(out) :: error integer :: id character(len=:), allocatable :: proj_dir, root id = self%find(name) root = "." if (id <= 0) then call fatal_error(error, "Cannot update dependency '"//name//"'") return end if associate (dep => self%dep(id)) if (allocated(dep%git) .and. dep%update) then if (self%verbosity > 0) write (self%unit, out_fmt) "Update:", dep%name proj_dir = join_path(self%dep_dir, dep%name) call dep%git%checkout(proj_dir, error) if (allocated(error)) return ! Unset dependency and remove updatable attribute dep%done = .false. dep%update = .false. ! Now decent into the dependency tree, level for level do while (.not. self%finished()) call self%resolve(root, error) if (allocated(error)) exit end do if (allocated(error)) return end if end associate end subroutine update_dependency !> Update whole dependency tree subroutine update_tree(self, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Error handling type(error_t), allocatable, intent(out) :: error integer :: i ! Update dependencies where needed do i = 1, self%ndep call self%update(self%dep(i)%name, error) if (allocated(error)) return end do end subroutine update_tree !> Resolve all dependencies in the tree subroutine resolve_dependencies(self, root, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Current installation prefix character(len=*), intent(in) :: root !> Error handling type(error_t), allocatable, intent(out) :: error type(fpm_global_settings) :: global_settings character(:), allocatable :: parent_directory integer :: ii ! Register path to global config file if it was entered via the command line. if (allocated(self%path_to_config)) then if (len_trim(self%path_to_config) > 0) then parent_directory = parent_dir(self%path_to_config) if (len_trim(parent_directory) == 0) then global_settings%path_to_config_folder = "." else global_settings%path_to_config_folder = parent_directory end if global_settings%config_file_name = basename(self%path_to_config) end if end if call get_global_settings(global_settings, error) if (allocated(error)) return do ii = 1, self%ndep call self%resolve(self%dep(ii), global_settings, root, error) if (allocated(error)) exit end do if (allocated(error)) return end subroutine resolve_dependencies !> Resolve a single dependency node subroutine resolve_dependency(self, dependency, global_settings, root, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Dependency configuration to add type(dependency_node_t), intent(inout) :: dependency !> Global configuration settings. type(fpm_global_settings), intent(in) :: global_settings !> Current installation prefix character(len=*), intent(in) :: root !> Error handling type(error_t), allocatable, intent(out) :: error type(package_config_t) :: package character(len=:), allocatable :: manifest, proj_dir, revision logical :: fetch if (dependency%done) return fetch = .false. if (allocated(dependency%proj_dir)) then proj_dir = dependency%proj_dir else if (allocated(dependency%path)) then proj_dir = join_path(root, dependency%path) else if (allocated(dependency%git)) then proj_dir = join_path(self%dep_dir, dependency%name) fetch = .not. exists(proj_dir) if (fetch) then call dependency%git%checkout(proj_dir, error) if (allocated(error)) return end if else call dependency%get_from_registry(proj_dir, global_settings, error) if (allocated(error)) return end if if (allocated(dependency%git)) then call git_revision(proj_dir, revision, error) if (allocated(error)) return end if manifest = join_path(proj_dir, "fpm.toml") call get_package_data(package, manifest, error) if (allocated(error)) return call dependency%register(package, proj_dir, fetch, revision, error) if (allocated(error)) return if (self%verbosity > 1) then write (self%unit, out_fmt) & "Dep:", dependency%name, "version", dependency%version%s(), & "at", dependency%proj_dir end if call self%add(package, proj_dir, .false., error) if (allocated(error)) return end subroutine resolve_dependency !> Get a dependency from the registry. Whether the dependency is fetched !> from a local, a custom remote or the official registry is determined !> by the global configuration settings. subroutine get_from_registry(self, target_dir, global_settings, error, downloader_) !> Instance of the dependency configuration. class(dependency_node_t), intent(in) :: self !> The target directory of the dependency. character(:), allocatable, intent(out) :: target_dir !> Global configuration settings. type(fpm_global_settings), intent(in) :: global_settings !> Error handling. type(error_t), allocatable, intent(out) :: error !> Downloader instance. class(downloader_t), optional, intent(in) :: downloader_ character(:), allocatable :: cache_path, target_url, tmp_file type(version_t) :: version integer :: stat, unit type(json_object) :: json class(downloader_t), allocatable :: downloader if (present(downloader_)) then downloader = downloader_ else allocate (downloader) end if ! Use local registry if it was specified in the global config file. if (allocated(global_settings%registry_settings%path)) then call self%get_from_local_registry(target_dir, global_settings%registry_settings%path, error); return end if ! Include namespace and package name in the cache path. cache_path = join_path(global_settings%registry_settings%cache_path, self%namespace, self%name) ! Check cache before downloading from the remote registry if a specific version was requested. When no specific ! version was requested, do network request first to check which is the newest version. if (allocated(self%requested_version)) then if (exists(join_path(cache_path, self%requested_version%s(), 'fpm.toml'))) then print *, "Using cached version of '", join_path(self%namespace, self%name, self%requested_version%s()), "'." target_dir = join_path(cache_path, self%requested_version%s()); return end if end if tmp_file = get_temp_filename() open (newunit=unit, file=tmp_file, action='readwrite', iostat=stat) if (stat /= 0) then call fatal_error(error, "Error creating temporary file for downloading package '"//self%name//"'."); return end if ! Include namespace and package name in the target url and download package data. target_url = global_settings%registry_settings%url//'/packages/'//self%namespace//'/'//self%name call downloader%get_pkg_data(target_url, self%requested_version, tmp_file, json, error) close (unit, status='delete') if (allocated(error)) return ! Verify package data and read relevant information. call check_and_read_pkg_data(json, self, target_url, version, error) if (allocated(error)) return ! Open new tmp file for downloading the actual package. open (newunit=unit, file=tmp_file, action='readwrite', iostat=stat) if (stat /= 0) then call fatal_error(error, "Error creating temporary file for downloading package '"//self%name//"'."); return end if ! Include version number in the cache path. If no cached version exists, download it. cache_path = join_path(cache_path, version%s()) if (.not. exists(join_path(cache_path, 'fpm.toml'))) then if (is_dir(cache_path)) call os_delete_dir(os_is_unix(), cache_path) call mkdir(cache_path) call downloader%get_file(target_url, tmp_file, error) if (allocated(error)) then close (unit, status='delete'); return end if ! Unpack the downloaded package to the final location. call downloader%unpack(tmp_file, cache_path, error) close (unit, status='delete') if (allocated(error)) return end if target_dir = cache_path end subroutine get_from_registry subroutine check_and_read_pkg_data(json, node, download_url, version, error) type(json_object), intent(inout) :: json class(dependency_node_t), intent(in) :: node character(:), allocatable, intent(out) :: download_url type(version_t), intent(out) :: version type(error_t), allocatable, intent(out) :: error integer :: code, stat type(json_object), pointer :: p, q character(:), allocatable :: version_key, version_str, error_message, namespace, name namespace = "" name = "UNNAMED_NODE" if (allocated(node%namespace)) namespace = node%namespace if (allocated(node%name)) name = node%name if (.not. json%has_key('code')) then call fatal_error(error, "Failed to download '"//join_path(namespace, name)//"': No status code."); return end if call get_value(json, 'code', code, stat=stat) if (stat /= 0) then call fatal_error(error, "Failed to download '"//join_path(namespace, name)//"': "// & & "Failed to read status code."); return end if if (code /= 200) then if (.not. json%has_key('message')) then call fatal_error(error, "Failed to download '"//join_path(namespace, name)//"': No error message."); return end if call get_value(json, 'message', error_message, stat=stat) if (stat /= 0) then call fatal_error(error, "Failed to download '"//join_path(namespace, name)//"': "// & & "Failed to read error message."); return end if call fatal_error(error, "Failed to download '"//join_path(namespace, name)//"'. Status code: '"// & & str(code)//"'. Error message: '"//error_message//"'."); return end if if (.not. json%has_key('data')) then call fatal_error(error, "Failed to download '"//join_path(namespace, name)//"': No data."); return end if call get_value(json, 'data', p, stat=stat) if (stat /= 0) then call fatal_error(error, "Failed to read package data for '"//join_path(namespace, name)//"'."); return end if if (allocated(node%requested_version)) then version_key = 'version_data' else version_key = 'latest_version_data' end if if (.not. p%has_key(version_key)) then call fatal_error(error, "Failed to download '"//join_path(namespace, name)//"': No version data."); return end if call get_value(p, version_key, q, stat=stat) if (stat /= 0) then call fatal_error(error, "Failed to retrieve version data for '"//join_path(namespace, name)//"'."); return end if if (.not. q%has_key('download_url')) then call fatal_error(error, "Failed to download '"//join_path(namespace, name)//"': No download url."); return end if call get_value(q, 'download_url', download_url, stat=stat) if (stat /= 0) then call fatal_error(error, "Failed to read download url for '"//join_path(namespace, name)//"'."); return end if download_url = official_registry_base_url//download_url if (.not. q%has_key('version')) then call fatal_error(error, "Failed to download '"//join_path(namespace, name)//"': No version found."); return end if call get_value(q, 'version', version_str, stat=stat) if (stat /= 0) then call fatal_error(error, "Failed to read version data for '"//join_path(namespace, name)//"'."); return end if call new_version(version, version_str, error) if (allocated(error)) then call fatal_error(error, "'"//version_str//"' is not a valid version for '"// & & join_path(namespace, name)//"'."); return end if end subroutine !> Get the dependency from a local registry. subroutine get_from_local_registry(self, target_dir, registry_path, error) !> Instance of the dependency configuration. class(dependency_node_t), intent(in) :: self !> The target directory to download the dependency to. character(:), allocatable, intent(out) :: target_dir !> The path to the local registry. character(*), intent(in) :: registry_path !> Error handling. type(error_t), allocatable, intent(out) :: error character(:), allocatable :: path_to_name type(string_t), allocatable :: files(:) type(version_t), allocatable :: versions(:) type(version_t) :: version integer :: i path_to_name = join_path(registry_path, self%namespace, self%name) if (.not. exists(path_to_name)) then call fatal_error(error, "Dependency resolution of '"//self%name// & & "': Directory '"//path_to_name//"' doesn't exist."); return end if call list_files(path_to_name, files) if (size(files) == 0) then call fatal_error(error, "No versions of '"//self%name//"' found in '"//path_to_name//"'."); return end if ! Version requested, find it in the cache. if (allocated(self%requested_version)) then do i = 1, size(files) ! Identify directory that matches the version number. if (files(i)%s == join_path(path_to_name, self%requested_version%s()) .and. is_dir(files(i)%s)) then if (.not. exists(join_path(files(i)%s, 'fpm.toml'))) then call fatal_error(error, "'"//files(i)%s//"' is missing an 'fpm.toml' file."); return end if target_dir = files(i)%s; return end if end do call fatal_error(error, "Version '"//self%requested_version%s()//"' not found in '"//path_to_name//"'") return end if ! No specific version requested, therefore collect available versions. allocate (versions(0)) do i = 1, size(files) if (is_dir(files(i)%s)) then call new_version(version, basename(files(i)%s), error) if (allocated(error)) return versions = [versions, version] end if end do if (size(versions) == 0) then call fatal_error(error, "No versions found in '"//path_to_name//"'"); return end if ! Find the latest version. version = versions(1) do i = 1, size(versions) if (versions(i) > version) version = versions(i) end do path_to_name = join_path(path_to_name, version%s()) if (.not. exists(join_path(path_to_name, 'fpm.toml'))) then call fatal_error(error, "'"//path_to_name//"' is missing an 'fpm.toml' file."); return end if target_dir = path_to_name end subroutine get_from_local_registry !> True if dependency is part of the tree pure logical function has_dependency(self, dependency) !> Instance of the dependency tree class(dependency_tree_t), intent(in) :: self !> Dependency configuration to check class(dependency_node_t), intent(in) :: dependency has_dependency = self%find(dependency%name) /= 0 end function has_dependency !> Find a dependency in the dependency tree pure function find_name(self, name) result(pos) !> Instance of the dependency tree class(dependency_tree_t), intent(in) :: self !> Dependency configuration to add character(len=*), intent(in) :: name !> Index of the dependency integer :: pos integer :: ii pos = 0 do ii = 1, self%ndep if (name == self%dep(ii)%name) then pos = ii exit end if end do end function find_name !> Check if we are done with the dependency resolution pure function finished(self) !> Instance of the dependency tree class(dependency_tree_t), intent(in) :: self !> All dependencies are updated logical :: finished finished = all(self%dep(:self%ndep)%done) end function finished !> Update dependency from project manifest subroutine register(node, package, root, fetch, revision, error) !> Instance of the dependency node class(dependency_node_t), intent(inout) :: node !> Package configuration data type(package_config_t), intent(in) :: package !> Project has been fetched logical, intent(in) :: fetch !> Root directory of the project character(len=*), intent(in) :: root !> Git revision of the project character(len=*), intent(in), optional :: revision !> Error handling type(error_t), allocatable, intent(out) :: error logical :: update update = .false. if (node%name /= package%name) then call fatal_error(error, "Dependency name '"//package%name// & & "' found, but expected '"//node%name//"' instead") return end if node%version = package%version node%proj_dir = root if (allocated(node%git) .and. present(revision)) then node%revision = revision if (.not. fetch) then ! Change in revision ID was checked already. Only update if ALL git information is missing update = .not. allocated(node%git%url) end if end if if (update) node%update = update node%done = .true. end subroutine register !> Capture the list of "required" packages while the manifest is loaded. !> This subroutine should be called during the "resolve" phase, i.e. when the whole !> dependency tree has been built already subroutine get_required_packages(tree, node_ID, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: tree !> Instance of the dependency node integer, intent(in) :: node_ID !> Error handling type(error_t), allocatable, intent(out) :: error integer :: nreq,k,id type(dependency_config_t), allocatable :: dependency(:) type(package_config_t) :: manifest logical :: required(tree%ndep),main associate(node => tree%dep(node_ID)) ! Is the main project main = node_ID==1 ! Get manifest call get_package_data(manifest, join_path(node%proj_dir,"fpm.toml"), error) if (allocated(error)) return call get_package_dependencies(manifest, main, dependency) nreq = size(dependency) ! Translate names -> indices required = .false. do k = 1, nreq id = tree%find(dependency(k)%name) if (id<=0) then ! Shouldn't happen because tree already contains every dep call fatal_error(error, "Internal error: "//trim(node%name)// & & " cannot find resolved dependency "//trim(dependency(k)%name)//" in tree") return end if ! Recurse dependencies call recurse_deps(tree, id, required) end do ! Recursed list nreq = count(required) if (allocated(node%package_dep)) deallocate(node%package_dep) allocate(node%package_dep(nreq)) k = 0 do id=1,tree%ndep if (.not.required(id)) cycle k = k+1 node%package_dep(k) = string_t(tree%dep(id)%name) end do endassociate contains recursive subroutine recurse_deps(tree, id, required) class(dependency_tree_t), intent(in) :: tree integer, intent(in) :: id logical, intent(inout) :: required(:) integer :: j,dep_id if (required(id)) return required(id) = .true. if (allocated(tree%dep(id)%package_dep)) then do j = 1, size(tree%dep(id)%package_dep) dep_id = tree%find(tree%dep(id)%package_dep(j)%s) call recurse_deps(tree, dep_id, required) end do end if end subroutine recurse_deps end subroutine get_required_packages !> Build a correct topological link order for a given dependency node. !> !> This routine returns the list of dependencies required to build `root_id`, !> sorted such that each dependency appears *before* any node that depends on it. !> This is suitable for correct linker ordering: `-lA -lB` means B can use symbols from A. !> !> The returned list includes both the transitive dependencies and the node itself. !> Example: if node 3 requires [5, 7, 9, 2] and 9 also requires 2, !> then the result will ensure that 2 appears before 9, etc. subroutine local_link_order(tree, root_id, order, error) !> The full dependency graph class(dependency_tree_t), intent(in) :: tree !> Index of the node for which to compute link order (e.g., the target being linked) integer, intent(in) :: root_id !> Ordered list of dependency indices (subset of tree%dep(:)) in link-safe order integer, allocatable, intent(out) :: order(:) !> Optional fatal error if a cycle is detected (not expected) type(error_t), allocatable, intent(out) :: error !> Track which nodes have been visited logical, allocatable :: visited(:) !> Work stack holding post-order DFS traversal integer, allocatable :: stack(:) !> Total number of nodes and current stack position integer :: n, top n = tree%ndep allocate(visited(n), source=.false.) allocate(stack(n), source=0) top = 0 !> Depth-First Search from root node call dfs(root_id,visited,stack,top,error) if (allocated(error)) return !> The final link order is the reverse of the DFS post-order allocate(order(top)) if (top>0) order(:) = stack(:top) contains !> Recursive depth-first search, post-order recursive subroutine dfs(i,visited,stack,top,error) integer, intent(in) :: i logical, intent(inout) :: visited(:) integer, intent(inout) :: stack(:),top type(error_t), allocatable, intent(out) :: error integer :: k, id if (.not.(i>0 .and. i<=tree%ndep)) then call fatal_error(error,'package graph failed: invalid dependency ID') return end if if (visited(i)) return visited(i) = .true. ! Visit all required dependencies before this node if (allocated(tree%dep(i)%package_dep)) then do k = 1, size(tree%dep(i)%package_dep) id = tree%find(tree%dep(i)%package_dep(k)%s) if (.not.(id>0 .and. id<=tree%ndep)) then call fatal_error(error,'package graph failed: cannot find '//tree%dep(i)%package_dep(k)%s) return end if call dfs(id, visited, stack, top, error) if (allocated(error)) return end do end if ! Now that all dependencies are handled, record this node top = top + 1 stack(top) = i end subroutine dfs end subroutine local_link_order !> Read dependency tree from file subroutine load_cache_from_file(self, file, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> File name character(len=*), intent(in) :: file !> Error handling type(error_t), allocatable, intent(out) :: error integer :: unit logical :: exist inquire (file=file, exist=exist) if (.not. exist) return open (file=file, newunit=unit) call self%load_cache(unit, error) close (unit) end subroutine load_cache_from_file !> Read dependency tree from file subroutine load_cache_from_unit(self, unit, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> File name integer, intent(in) :: unit !> Error handling type(error_t), allocatable, intent(out) :: error type(toml_error), allocatable :: parse_error type(toml_table), allocatable :: table call toml_load(table, unit, error=parse_error) if (allocated(parse_error)) then allocate (error) call move_alloc(parse_error%message, error%message) return end if call self%load_cache(table, error) if (allocated(error)) return end subroutine load_cache_from_unit !> Read dependency tree from TOML data structure subroutine load_cache_from_toml(self, table, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Data structure type(toml_table), intent(inout) :: table !> Error handling type(error_t), allocatable, intent(out) :: error integer :: ndep, ii logical :: is_unix character(len=:), allocatable :: version, url, obj, rev, proj_dir type(toml_key), allocatable :: list(:) type(toml_table), pointer :: ptr call table%get_keys(list) ndep = size(self%dep) if (ndep < size(list) + self%ndep) then call resize(self%dep, ndep + ndep/2 + size(list)) end if is_unix = get_os_type() /= OS_WINDOWS do ii = 1, size(list) call get_value(table, list(ii)%key, ptr) call get_value(ptr, "version", version) call get_value(ptr, "proj-dir", proj_dir) call get_value(ptr, "git", url) call get_value(ptr, "obj", obj) call get_value(ptr, "rev", rev) if (.not. allocated(proj_dir)) cycle self%ndep = self%ndep + 1 associate (dep => self%dep(self%ndep)) dep%name = list(ii)%key if (is_unix) then dep%proj_dir = proj_dir else dep%proj_dir = windows_path(proj_dir) end if dep%done = .false. if (allocated(version)) then if (.not. allocated(dep%version)) allocate (dep%version) call new_version(dep%version, version, error) if (allocated(error)) exit end if if (allocated(url)) then if (allocated(obj)) then dep%git = git_target_revision(url, obj) else dep%git = git_target_default(url) end if if (allocated(rev)) then dep%revision = rev end if else dep%path = proj_dir end if end associate end do if (allocated(error)) return self%ndep = size(list) end subroutine load_cache_from_toml !> Write dependency tree to file subroutine dump_cache_to_file(self, file, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> File name character(len=*), intent(in) :: file !> Error handling type(error_t), allocatable, intent(out) :: error integer :: unit open (file=file, newunit=unit) call self%dump_cache(unit, error) close (unit) if (allocated(error)) return end subroutine dump_cache_to_file !> Write dependency tree to file subroutine dump_cache_to_unit(self, unit, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Formatted unit integer, intent(in) :: unit !> Error handling type(error_t), allocatable, intent(out) :: error type(toml_table) :: table table = toml_table() call self%dump_cache(table, error) write (unit, '(a)') toml_serialize(table) end subroutine dump_cache_to_unit !> Write dependency tree to TOML datastructure subroutine dump_cache_to_toml(self, table, error) !> Instance of the dependency tree class(dependency_tree_t), intent(inout) :: self !> Data structure type(toml_table), intent(inout) :: table !> Error handling type(error_t), allocatable, intent(out) :: error integer :: ii type(toml_table), pointer :: ptr character(len=:), allocatable :: proj_dir do ii = 1, self%ndep associate (dep => self%dep(ii)) call add_table(table, dep%name, ptr) if (.not. associated(ptr)) then call fatal_error(error, "Cannot create entry for "//dep%name) exit end if if (allocated(dep%version)) then call set_value(ptr, "version", dep%version%s()) end if proj_dir = canon_path(dep%proj_dir) call set_value(ptr, "proj-dir", proj_dir) if (allocated(dep%git)) then call set_value(ptr, "git", dep%git%url) if (allocated(dep%git%object)) then call set_value(ptr, "obj", dep%git%object) end if if (allocated(dep%revision)) then call set_value(ptr, "rev", dep%revision) end if end if end associate end do if (allocated(error)) return end subroutine dump_cache_to_toml !> Reallocate a list of dependencies pure subroutine resize_dependency_node(var, n) !> Instance of the array to be resized type(dependency_node_t), allocatable, intent(inout) :: var(:) !> Dimension of the final array size integer, intent(in), optional :: n type(dependency_node_t), allocatable :: tmp(:) integer :: this_size, new_size integer, parameter :: initial_size = 16 if (allocated(var)) then this_size = size(var, 1) call move_alloc(var, tmp) else this_size = initial_size end if if (present(n)) then new_size = n else new_size = this_size + this_size/2 + 1 end if allocate (var(new_size)) if (allocated(tmp)) then this_size = min(size(tmp, 1), size(var, 1)) var(:this_size) = tmp(:this_size) deallocate (tmp) end if end subroutine resize_dependency_node !> Check if a dependency node has changed logical function dependency_has_changed(cached, manifest, verbosity, iunit) result(has_changed) !> Two instances of the same dependency to be compared type(dependency_node_t), intent(in) :: cached, manifest !> Log verbosity integer, intent(in) :: verbosity, iunit integer :: ip has_changed = .true. !> All the following entities must be equal for the dependency to not have changed if (manifest_has_changed(cached=cached, manifest=manifest, verbosity=verbosity, iunit=iunit)) return !> For now, only perform the following checks if both are available. A dependency in cache.toml !> will always have this metadata; a dependency from fpm.toml which has not been fetched yet !> may not have it if (allocated(cached%version) .and. allocated(manifest%version)) then if (cached%version /= manifest%version) then if (verbosity > 1) write (iunit, out_fmt) "VERSION has changed: "//cached%version%s()//" vs. "//manifest%version%s() return end if else if (verbosity > 1) write (iunit, out_fmt) "VERSION has changed presence " end if if (allocated(cached%revision) .and. allocated(manifest%revision)) then if (cached%revision /= manifest%revision) then if (verbosity > 1) write (iunit, out_fmt) "REVISION has changed: "//cached%revision//" vs. "//manifest%revision return end if else if (verbosity > 1) write (iunit, out_fmt) "REVISION has changed presence " end if if (allocated(cached%proj_dir) .and. allocated(manifest%proj_dir)) then if (cached%proj_dir /= manifest%proj_dir) then if (verbosity > 1) write (iunit, out_fmt) "PROJECT DIR has changed: "//cached%proj_dir//" vs. "//manifest%proj_dir return end if else if (verbosity > 1) write (iunit, out_fmt) "PROJECT DIR has changed presence " end if if (allocated(cached%preprocess) .eqv. allocated(manifest%preprocess)) then if (allocated(cached%preprocess)) then if (size(cached%preprocess) /= size(manifest%preprocess)) then if (verbosity > 1) write (iunit, out_fmt) "PREPROCESS has changed size" return end if do ip=1,size(cached%preprocess) if (.not.(cached%preprocess(ip) == manifest%preprocess(ip))) then if (verbosity > 1) write (iunit, out_fmt) "PREPROCESS config has changed" return end if end do endif else if (verbosity > 1) write (iunit, out_fmt) "PREPROCESS has changed presence " return end if !> All checks passed: the two dependencies have no differences has_changed = .false. end function dependency_has_changed !> Check that two dependency nodes are equal logical function dependency_node_is_same(this,that) class(dependency_node_t), intent(in) :: this class(serializable_t), intent(in) :: that dependency_node_is_same = .false. select type (other=>that) type is (dependency_node_t) ! Base class must match if (.not.(this%dependency_config_t==other%dependency_config_t)) return ! Extension must match if (.not.(this%done .eqv.other%done)) return if (.not.(this%update.eqv.other%update)) return if (.not.(this%cached.eqv.other%cached)) return if (allocated(this%proj_dir) .neqv. allocated(other%proj_dir)) return if (allocated(this%proj_dir)) then if (.not.(this%proj_dir==other%proj_dir)) return endif if (allocated(this%revision) .neqv. allocated(other%revision)) return if (allocated(this%revision)) then if (.not.(this%revision==other%revision)) return endif if (allocated(this%version).neqv.allocated(other%version)) return if (allocated(this%version)) then if (.not.(this%version==other%version)) return endif if (allocated(this%package_dep).neqv.allocated(other%package_dep)) return if (allocated(this%package_dep)) then if (.not.size(this%package_dep)==size(other%package_dep)) return if (.not.(this%package_dep==other%package_dep)) return endif class default ! Not the same type return end select !> All checks passed! dependency_node_is_same = .true. end function dependency_node_is_same !> Dump dependency to toml table subroutine node_dump_to_toml(self, table, error) !> Instance of the serializable object class(dependency_node_t), intent(inout) :: self !> Data structure type(toml_table), intent(inout) :: table !> Error handling type(error_t), allocatable, intent(out) :: error integer :: i,n,ierr type(toml_array), pointer :: array ! Dump parent class call self%dependency_config_t%dump_to_toml(table, error) if (allocated(error)) return if (allocated(self%version)) then call set_string(table, "version", self%version%s(), error,'dependency_node_t') if (allocated(error)) return endif call set_string(table, "proj-dir", self%proj_dir, error, 'dependency_node_t') if (allocated(error)) return call set_string(table, "revision", self%revision, error, 'dependency_node_t') if (allocated(error)) return call set_value(table, "done", self%done, error, 'dependency_node_t') if (allocated(error)) return call set_value(table, "update", self%update, error, 'dependency_node_t') if (allocated(error)) return call set_value(table, "cached", self%cached, error, 'dependency_node_t') if (allocated(error)) return call set_list(table, "package-dep",self%package_dep, error) if (allocated(error)) return end subroutine node_dump_to_toml !> Read dependency from toml table (no checks made at this stage) subroutine node_load_from_toml(self, table, error) !> Instance of the serializable object class(dependency_node_t), intent(inout) :: self !> Data structure type(toml_table), intent(inout) :: table !> Error handling type(error_t), allocatable, intent(out) :: error !> Local variables character(len=:), allocatable :: version integer :: ierr,i,n type(toml_array), pointer :: array call destroy_dependency_node(self) ! Load parent class call self%dependency_config_t%load_from_toml(table, error) if (allocated(error)) return call get_value(table, "done", self%done, error, 'dependency_node_t') if (allocated(error)) return call get_value(table, "update", self%update, error, 'dependency_node_t') if (allocated(error)) return call get_value(table, "cached", self%cached, error, 'dependency_node_t') if (allocated(error)) return call get_value(table, "proj-dir", self%proj_dir) call get_value(table, "revision", self%revision) call get_value(table, "version", version) if (allocated(version)) then allocate(self%version) call new_version(self%version, version, error) if (allocated(error)) then error%message = 'dependency_node_t: version error from TOML table - '//error%message return endif end if call get_list(table,"package-dep",self%package_dep, error) if (allocated(error)) return end subroutine node_load_from_toml !> Destructor elemental subroutine destroy_dependency_node(self) class(dependency_node_t), intent(inout) :: self integer :: ierr call dependency_destroy(self) deallocate(self%version,stat=ierr) deallocate(self%proj_dir,stat=ierr) deallocate(self%revision,stat=ierr) deallocate(self%package_dep,stat=ierr) self%done = .false. self%update = .false. self%cached = .false. end subroutine destroy_dependency_node !> Check that two dependency trees are equal logical function dependency_tree_is_same(this,that) class(dependency_tree_t), intent(in) :: this class(serializable_t), intent(in) :: that integer :: ii dependency_tree_is_same = .false. select type (other=>that) type is (dependency_tree_t) if (.not.(this%unit==other%unit)) return if (.not.(this%verbosity==other%verbosity)) return if (allocated(this%dep_dir) .neqv. allocated(other%dep_dir)) return if (allocated(this%dep_dir)) then if (.not.(this%dep_dir==other%dep_dir)) return endif if (.not.(this%ndep==other%ndep)) return if (.not.(allocated(this%dep).eqv.allocated(other%dep))) return if (allocated(this%dep)) then if (.not.(size(this%dep)==size(other%dep))) return do ii = 1, size(this%dep) if (.not.(this%dep(ii)==other%dep(ii))) return end do endif if (allocated(this%cache) .neqv. allocated(other%cache)) return if (allocated(this%cache)) then if (.not.(this%cache==other%cache)) return endif class default ! Not the same type return end select !> All checks passed! dependency_tree_is_same = .true. end function dependency_tree_is_same !> Dump dependency to toml table subroutine tree_dump_to_toml(self, table, error) !> Instance of the serializable object class(dependency_tree_t), intent(inout) :: self !> Data structure type(toml_table), intent(inout) :: table !> Error handling type(error_t), allocatable, intent(out) :: error integer :: ierr, ii type(toml_table), pointer :: ptr_deps,ptr character(27) :: unnamed call set_value(table, "unit", self%unit, error, 'dependency_tree_t') if (allocated(error)) return call set_value(table, "verbosity", self%verbosity, error, 'dependency_tree_t') if (allocated(error)) return call set_string(table, "dep-dir", self%dep_dir, error, 'dependency_tree_t') if (allocated(error)) return call set_string(table, "cache", self%cache, error, 'dependency_tree_t') if (allocated(error)) return call set_value(table, "ndep", self%ndep, error, 'dependency_tree_t') if (allocated(error)) return if (allocated(self%dep)) then ! Create dependency table call add_table(table, "dependencies", ptr_deps) if (.not. associated(ptr_deps)) then call fatal_error(error, "dependency_tree_t cannot create dependency table ") return end if do ii = 1, size(self%dep) associate (dep => self%dep(ii)) !> Because dependencies are named, fallback if this has no name !> So, serialization will work regardless of size(self%dep) == self%ndep if (.not. allocated(dep%name)) then write(unnamed,1) ii call add_table(ptr_deps, trim(unnamed), ptr) else if (len_trim(dep%name)==0) then write(unnamed,1) ii call add_table(ptr_deps, trim(unnamed), ptr) else call add_table(ptr_deps, dep%name, ptr) end if if (.not. associated(ptr)) then call fatal_error(error, "dependency_tree_t cannot create entry for dependency "//dep%name) return end if call dep%dump_to_toml(ptr, error) if (allocated(error)) return end associate end do endif 1 format('UNNAMED_DEPENDENCY_',i0) end subroutine tree_dump_to_toml !> Read dependency from toml table (no checks made at this stage) subroutine tree_load_from_toml(self, table, error) !> Instance of the serializable object class(dependency_tree_t), intent(inout) :: self !> Data structure type(toml_table), intent(inout) :: table !> Error handling type(error_t), allocatable, intent(out) :: error !> Local variables type(toml_key), allocatable :: keys(:),dep_keys(:) type(toml_table), pointer :: ptr_deps,ptr integer :: ii, jj, ierr call table%get_keys(keys) call get_value(table, "unit", self%unit, error, 'dependency_tree_t') if (allocated(error)) return call get_value(table, "verbosity", self%verbosity, error, 'dependency_tree_t') if (allocated(error)) return call get_value(table, "ndep", self%ndep, error, 'dependency_tree_t') if (allocated(error)) return call get_value(table, "dep-dir", self%dep_dir) call get_value(table, "cache", self%cache) find_deps_table: do ii = 1, size(keys) if (keys(ii)%key=="dependencies") then call get_value(table, keys(ii), ptr_deps) if (.not.associated(ptr_deps)) then call fatal_error(error,'dependency_tree_t: error retrieving dependency table from TOML table') return end if !> Read all dependencies call ptr_deps%get_keys(dep_keys) call resize(self%dep, size(dep_keys)) do jj = 1, size(dep_keys) call get_value(ptr_deps, dep_keys(jj), ptr) call self%dep(jj)%load_from_toml(ptr, error) if (allocated(error)) return end do exit find_deps_table endif end do find_deps_table end subroutine tree_load_from_toml end module fpm_dependency