Response from Phoebe Goldman hand-forwarded because of problems with common-lisp.net's email server:
A few things.
1. ECHO-OP should not be selfward. SELFWARD-OPERATION is for (OPERATION COMPONENT) pairs which depend on (DIFFERENT-OPERATION COMPONENT) for the same COMPONENT. For example, LOAD-OP is selfward with respect to COMPILE-OP, because in order to perform (load-op FILE), you must first perform (compile-op FILE). Your ECHO-OP has no such dependency. In this case, I believe you want ECHO-OP to be downward and sideways, meaning that (ECHO-OP MODULE) depends on (ECHO-OP MODULE-COMPONENT) for each of the children MODULE-COMPONENTs of the MODULE, and that (ECHO-OP SOURCE-FILE) depends on (ECHO-OP EARLIER-SOURCE-FILE) for each of the EARLIER-SOURCE-FILEs in SOURCE-FILE's :DEPENDS-ON list. This way, when you call (OPERATE 'ECHO-OP (FIND-SYSTEM "whatever")), ASDF will do a depth-first dependency-order traversal of your system.
2. Your COMPONENT-DEPENDS-ON method is wrong. No pair of (OPERATION COMPONENT) should ever depend on the same (OPERATION COMPONENT). What you're saying is, "in order to perform (ECHO-OP FILE), you must first perform (ECHO-OP FILE)."
3. For operations that subclass one or more of DOWNWARD- UPWARD- SIDEWAY- SELFWARD- or NON-PROPOGATING-OPERATION, you don't need to define a COMPONENT-DEPENDS-ON method.
4. Most (OPERATION COMPONENT) pairs have very uninteresting sets of input files. (COMPILE-OP CL-SOURCE-FILE) has one input file, the .lisp source file. (LOAD-OP CL-SOURCE-FILE) has one input file, the .fasl compiled file. (ECHO-OP CL-SOURCE-FILE) will have no input files at all, unless you define a method on INPUT-FILES to list them.
I think the following definition of ECHO-OP might be enlightening to you:
``` (uiop:define-package :echo-op (:use :cl) (:export #:echo-op)) (in-package :echo-op)
(defclass echo-op (asdf:sideway-operation asdf:downward-operation) ())
(defun print-input-files (op c) (format t "~&Operation ~a on component ~a has input files:~{~% ~a~}~%" op c (asdf:input-files op c)))
(defun print-dependencies (op c) (format t "~&Operation ~a on component ~a depends on ~{~% ~a~}~%" op c (asdf:component-depends-on op c)))
(defmethod asdf:perform ((op echo-op) c) (flet ((do-operations (thunk) (funcall thunk op c) (funcall thunk (asdf:make-operation 'asdf:compile-op) c) (funcall thunk (asdf:make-operation 'asdf:load-op) c))) (format t "~&~%Input files for component ~a with a variety of operations:~%~%" c) (do-operations #'print-input-files) (format t "~&~%Dependencies for component ~a with a variety of operations:~%~%" c) (do-operations #'print-dependencies))) ```
Note that: 1. The only method I have defined is on PERFORM, and it is a primary method, not an :AROUND method. ASDF already has all the COMPONENT-DEPENDS-ON methods I need. 2. I print the COMPONENT-DEPENDS-ON list in addition to the INPUT-FILES list. 3. I print both the COMPONENT-DEPENDS-ON and INPUT-FILES lists for all three of ECHO-OP, COMPILE-OP and LOAD-OP.
I recommend you load this version, try (ASDF:OPERATE 'ECHO-OP:ECHO-OP (ASDF:FIND-SYSTEM "echo-op-test") :FORCE T) and see what output you get.
cheers, phoebe
On Apr 26, 2022, at 3:40 AM, zacque <technical+asdf-devel@zacque.tk <mailto:technical+asdf-devel@zacque.tkwrote:
Hi,
I'm trying to learn how ASDF object model works by defining a simple operation "echo-op". I want it to print out pathnames of all loaded lisp files to *standard-output*. It sounds like a simple task, but I couldn't get it to work. Thus I'm asking for help here.
To do that, I define a project: ----------- file: echo-op.asd ------------------- (defsystem #:echo-op :components ((:file "package") (:file "echo-op")))
----------- file: package.lisp ------------------- (defpackage #:echo-op (:use #:cl #:asdf) (:export
#:selfward-echo-op))
----------- file: echo-op.lisp ------------------- (in-package #:echo-op)
(defclass selfward-echo-op (selfward-operation) ())
(defmethod asdf:component-depends-on ((op selfward-echo-op) c) `((selfward-echo-op ,c) ,@(call-next-method)))
(defmethod asdf:output-files ((op selfward-echo-op) c) nil)
(defmethod asdf:perform :around ((op selfward-echo-op) c) (let ((input-files (asdf:input-files op c))) (loop for file in input-files do (format t "~s" file))))
(setf (find-class 'asdf::selfward-echo-op) (find-class 'selfward-echo-op))
Then, if I run these from the REPL: ----------- REPL ------------------- CL-USER> (asdf:load-system :echo-op :force t) ; compiling file ; compilation finished in 0:00:00.004 ; compiling file ; wrote ; compilation finished in 0:00:00.036 T CL-USER> (asdf:operate 'asdf::selfward-echo-op :echo-op-test) ; Evaluation aborted on #<SB-PCL::NO-APPLICABLE-METHOD-ERROR {1002341273}>.
I got the error: ----------- SLIME *sldb* ------------------- The slot ASDF/ACTION:SELFWARD-OPERATION is unbound in the object #<SELFWARD-ECHO-OP >. [Condition of type UNBOUND-SLOT]
The "echo-op-test" system is simply: ----------- file: echo-op-test.lisp ------------------- (defsystem #:echo-op-test :defsystem-depends-on (#:echo-op) :components ((:file "package") (:file "example") (:file "main")))
with empty files package.lisp, example.lisp, and main.lisp.
Now, if I redefine selfward-echo-op to subclass load-op, I got this error instead: ----------- SLIME *sldb* ------------------- Circular dependency of #1=(#<ECHO-OP:SELFWARD-ECHO-OP > . #<ASDF/SYSTEM:SYSTEM "echo-op-test">) on: (#1#) [Condition of type ASDF/ACTION:CIRCULAR-DEPENDENCY]
which I have no idea what is going on.
I'm still learning about ASDF, so any help to achieve what I want to do would be very much appreciated.
Thanks!
-- Regards, zacque
-
Robert Goldman