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asset.lisp
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asset.lisp
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(in-package #:org.shirakumo.fraf.trial)
(defclass placeholder-resource (resource)
((generator :initform (error "GENERATOR required."))
(name :initform T)))
(defmethod print-object ((resource placeholder-resource) stream)
(let ((asset (generator resource)))
(print-unreadable-object (resource stream :type T)
(if (pool asset)
(format stream "~a/~a[~a]" (name (pool asset)) (name asset) (name resource))
(format stream "?/~a[~a]" (name asset) (name resource))))))
(defmethod allocated-p ((resource placeholder-resource)) NIL)
(defmethod allocate ((resource placeholder-resource))
(allocate (ensure-generated resource)))
(defmethod ensure-generated ((resource placeholder-resource))
(load (generator resource))
(if (typep resource 'placeholder-resource)
(error "Loading the asset~% ~a~%did not generate the resource~% ~a"
(generator resource) resource)
resource))
(defmethod ensure-generated ((resource resource))
resource)
(defmethod unload ((resource placeholder-resource)))
(defmethod dependencies ((resource placeholder-resource))
(list (generator resource)))
(defmethod gl-source ((resource placeholder-resource))
(gl-source (generator resource)))
(defclass asset (resource-generator loadable)
((pool :initform NIL :accessor pool)
(name :initform NIL :accessor name)
(documentation :initarg :documentation :initform NIL)
(input :initarg :input :initform NIL :accessor input)
(loaded-p :initform NIL :accessor loaded-p :reader allocated-p)
(generation-arguments :initform () :initarg :generation-arguments :accessor generation-arguments)))
(defgeneric load (asset))
(defgeneric reload (asset))
(defgeneric unload (asset))
(defgeneric list-resources (asset))
(defgeneric coerce-asset-input* (asset input))
(defun // (pool asset &optional (resource T))
(resource (asset pool asset) resource))
(define-compiler-macro // (&whole whole pool asset &optional (resource T) &environment env)
;; We can do this because an asset's generated resources must be updated in place.
(if (and (constantp pool env)
(constantp asset env))
(if (constantp resource env)
`(load-time-value (resource (asset ,pool ,asset) ,resource))
`(resource (asset ,pool ,asset) ,resource))
whole))
(defmethod shared-initialize :after ((asset asset) slots &key pool name)
(check-type name symbol)
(when name
(setf (name asset) name))
(when pool
(setf (pool asset) (etypecase pool
(symbol (find-pool pool T))
(pool pool))))
(when (name asset)
(setf (asset pool name) asset)))
(defmethod reinitialize-instance :after ((asset asset) &key)
(when (loaded-p asset)
(reload asset)))
(defmethod update-instance-for-different-class :around ((previous asset) (current asset) &key)
(cond ((loaded-p previous)
(unload previous)
(call-next-method)
(load current))
(T
(call-next-method))))
(defmethod print-object ((asset asset) stream)
(print-unreadable-object (asset stream :type T)
(format stream "~a/~a" (when (pool asset) (name (pool asset))) (name asset))))
(defmethod describe-object ((asset asset) stream)
(call-next-method)
(format stream "~&~%Documentation:~%~@< ~@;~a~;~:>~&" (documentation asset T))
(format stream "~&~%Resources:~%")
(labels ((g< (a b)
(cond ((and (consp a) (consp b))
(and (string< (car a) (car b))
(g< (cdr a) (cdr b))))
((consp a)
(g< (car a) b))
((consp b)
(g< a (car b)))
(T
(string< a b)))))
(dolist (resource (sort (list-resources asset) #'g< :key #'name))
(format stream " ~s~40t~40<[~a]~>~%" (name resource) (type-of resource)))))
(defmethod documentation ((asset asset) (doc-type (eql T)))
(slot-value asset 'documentation))
(defmethod (setf documentation) (value (asset asset) (doc-type (eql T)))
(setf (slot-value asset 'documentation) value))
(defmethod documentation ((name cons) (doc-type (eql 'asset)))
(documentation (asset (first name) (second name) T) T))
(defmethod (setf documentation) (value (name cons) (doc-type (eql 'asset)))
(setf (documentation (asset (first name) (second name) T) T) value))
(defmethod resource ((asset asset) id)
(error "The asset~% ~a~%does not hold a resource named~% ~a"
asset id))
(defmethod generate-resources :around ((asset asset) (input (eql T)) &rest args)
(apply #'generate-resources asset (input* asset) (append args (generation-arguments asset))))
(defmethod reload ((asset asset))
(when (and (loaded-p asset) *context*)
(with-context (*context*)
(deallocate asset)
(loop for resource in (enlist (apply #'generate-resources asset (input* asset) (generation-arguments asset)))
do (dolist (dependency (dependencies resource))
(allocate dependency))
(allocate resource)))))
(defmethod load ((asset asset))
(apply #'generate-resources asset (input* asset) (generation-arguments asset)))
(defmethod load :around ((asset asset))
(unless (loaded-p asset)
(v:trace :trial.asset "Loading ~a" asset)
(with-cleanup-on-failure (deallocate asset)
(call-next-method))))
(defmethod generate-resources :after ((asset asset) input &key)
(setf (loaded-p asset) T))
(defmethod unload :around ((asset asset))
(when (loaded-p asset)
(v:trace :trial.asset "Unloading ~a" asset)
(call-next-method)))
(defmethod unload :after ((asset asset))
(setf (loaded-p asset) NIL))
(defmethod deallocate :after ((asset asset))
(setf (loaded-p asset) NIL))
(defmethod allocate ((asset asset))
(load asset))
(defmethod coerce-asset-input ((asset asset) (input (eql T)))
(coerce-asset-input asset (input asset)))
(defmethod coerce-asset-input ((asset asset) thing)
thing)
(defmethod coerce-asset-input ((asset asset) (path pathname))
(let ((path (if (pool asset)
(pool-path (pool asset) path)
path)))
(if (wild-pathname-p path)
(directory path)
path)))
(defmethod coerce-asset-input ((asset asset) (list list))
(loop for item in list collect (coerce-asset-input asset item)))
(defmethod input* ((asset asset))
(coerce-asset-input asset (input asset)))
(defun check-loaded (asset)
(restart-case
(unless (loaded-p asset)
(error "The asset~% ~a~%needs to be loaded, but is not."
asset))
(continue ()
:report (lambda (s) (format s "Load ~a now" asset))
(load asset)))
asset)
(defmacro define-asset ((pool name) type input &rest options)
(check-type pool symbol)
(check-type name symbol)
(check-type type symbol)
(form-fiddle:with-body-options (body options documentation) options
(assert (null body))
`(eval-when (:compile-toplevel :load-toplevel :execute)
(ensure-instance (asset ',pool ',name NIL) ',type
:documentation ,documentation
:input ,input
:name ',name
:pool ',pool
:generation-arguments (list ,@options)))))
(trivial-indent:define-indentation define-asset (4 6 4 &body))
(defun pathname-asset-name (path &key ignore-directory)
(flet ((rep (regex replace source)
(cl-ppcre:regex-replace-all regex source replace)))
(let ((name (rep "[ _\\-.]+" "-" (pathname-name path)))
(dirs (unless ignore-directory (rest (pathname-directory path)))))
(format NIL "~:@(~{~a/~}~a~)" dirs name))))
(defun generate-assets-from-path (pool type pathname &key (package *package*) attributes ignore-directory debug exclude)
(let ((base (pool-path pool #p""))
(default-options (rest (find T attributes :key #'first)))
(exclude (enlist exclude)))
(when debug
(print (pool-path pool pathname)))
(loop for path in (directory (pool-path pool pathname) :resolve-symlinks NIL)
unless (loop for exclusion in exclude
thereis (pathname-match-p path exclusion))
collect (let* ((path (enough-namestring path base))
(name (intern (pathname-asset-name path :ignore-directory ignore-directory) package))
(options (append (rest (find name attributes :key #'first)) default-options)))
(if debug
(print `(define-asset (,pool ,name) ,type
,(pathname path)
,@options))
(ensure-instance (asset pool name NIL) type
:input (pathname path)
:name name
:pool pool
:generation-arguments options))))))
(defmacro define-assets-from-path ((pool type pathname &rest args) &body attributes)
`(generate-assets-from-path ',pool ',type ,pathname
:attributes (list ,@(loop for (name . args) in attributes
collect `(list ',name ,@args)))
:package ,*package*
,@args))
(defclass single-resource-asset (asset)
((resource)))
(defmethod shared-initialize :after ((asset single-resource-asset) slots &key)
(unless (slot-boundp asset 'resource)
(setf (slot-value asset 'resource) (make-instance 'placeholder-resource :generator asset))))
(defmethod resource ((asset single-resource-asset) (id (eql T)))
(slot-value asset 'resource))
(defmethod list-resources ((asset single-resource-asset))
(list (resource asset T)))
(defmethod unload ((asset single-resource-asset))
(unload (resource asset T)))
(defmethod deallocate ((asset single-resource-asset))
(when (allocated-p (resource asset T))
(deallocate (resource asset T)))
(change-class (resource asset T) 'placeholder-resource :generator asset))
(defclass multi-resource-asset (asset)
((resources :initform (make-hash-table :test 'equal))))
(defmethod resource ((asset multi-resource-asset) id)
(let ((table (slot-value asset 'resources)))
(or (gethash id table)
(setf (gethash id table)
(make-instance 'placeholder-resource :generator asset)))))
(defmethod list-resources ((asset multi-resource-asset))
(loop for resource being the hash-values of (slot-value asset 'resources)
collect resource))
(defmethod unload ((asset multi-resource-asset))
(loop for resource being the hash-values of (slot-value asset 'resources)
do (unload resource)))
(defmethod deallocate ((asset multi-resource-asset))
(loop for name being the hash-keys of (slot-value asset 'resources)
for resource being the hash-values of (slot-value asset 'resources)
do (when (allocated-p resource)
(deallocate resource))
(change-class resource 'placeholder-resource :name name :generator asset)))
(defclass file-input-asset (asset)
())
(defmethod shared-initialize :after ((asset file-input-asset) slots &key &allow-other-keys)
(let ((input (input* asset)))
(loop for file in (enlist input)
do (unless (probe-file file)
(alexandria:simple-style-warning "Input file~% ~s~%for asset~% ~s~%does not exist." file asset)))))
(defmethod compile-resources ((asset asset) (source (eql T)) &rest args &key &allow-other-keys)
(when (typep asset 'compiled-generator)
(apply #'compile-resources asset (input* asset) args)))
(defmethod compile-resources ((all (eql T)) (source (eql T)) &rest args &key &allow-other-keys)
(dolist (pool (list-pools))
(apply #'compile-resources pool source args)))
(defmethod compile-resources ((pool symbol) (source (eql T)) &rest args &key &allow-other-keys)
(apply #'compile-resources (find-pool pool T) source args))
(defclass full-load-asset (asset)
())