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;;; This is asdf: Another System Definition Facility.  $Revision: 1.73 $
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;;;
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;;; Feedback, bug reports, and patches are all welcome: please mail to
;;; <cclan-list@lists.sf.net>.  But note first that the canonical
;;; source for asdf is presently the cCLan CVS repository at
;;; <URL:http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/cclan/asdf/>
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;;;
;;; If you obtained this copy from anywhere else, and you experience
;;; trouble using it, or find bugs, you may want to check at the
;;; location above for a more recent version (and for documentation
;;; and test files, if your copy came without them) before reporting
;;; bugs.  There are usually two "supported" revisions - the CVS HEAD
;;; is the latest development version, whereas the revision tagged
;;; RELEASE may be slightly older but is considered `stable'

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;;; Copyright (c) 2001-2003 Daniel Barlow and contributors
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;;;
;;; Permission is hereby granted, free of charge, to any person obtaining
;;; a copy of this software and associated documentation files (the
;;; "Software"), to deal in the Software without restriction, including
;;; without limitation the rights to use, copy, modify, merge, publish,
;;; distribute, sublicense, and/or sell copies of the Software, and to
;;; permit persons to whom the Software is furnished to do so, subject to
;;; the following conditions:
;;;
;;; The above copyright notice and this permission notice shall be
;;; included in all copies or substantial portions of the Software.
;;;
;;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
;;; EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
;;; MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
;;; NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
;;; LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
;;; OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
;;; WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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;;; the problem with writing a defsystem replacement is bootstrapping:
;;; we can't use defsystem to compile it.  Hence, all in one file

(defpackage #:asdf
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  (:export #:defsystem #:oos #:operate #:find-system #:run-shell-command
	   #:system-definition-pathname #:find-component ; miscellaneous
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	   #:hyperdocumentation #:hyperdoc
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	   #:compile-op #:load-op #:load-source-op #:test-system-version
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	   #:test-op
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	   #:operation			; operations
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	   #:feature			; sort-of operation
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	   #:version			; metaphorically sort-of an operation
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	   #:output-files #:perform	; operation methods
	   #:operation-done-p #:explain
	   
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	   #:component #:source-file 
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	   #:c-source-file #:cl-source-file #:java-source-file
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	   #:static-file
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	   #:doc-file
	   #:html-file
	   #:text-file
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	   #:source-file-type
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	   #:module			; components
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	   #:system
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	   #:unix-dso
	   
	   #:module-components		; component accessors
	   #:component-pathname
	   #:component-relative-pathname
	   #:component-name
	   #:component-version
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	   #:component-parent
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	   #:component-property
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	   #:component-depends-on
	   
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	   ;#:*component-parent-pathname* 
	   #:*central-registry*		; variables
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	   #:*compile-file-warnings-behaviour*
	   #:*compile-file-failure-behaviour*
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	   #:operation-error #:compile-failed #:compile-warned #:compile-error
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	   #:system-definition-error 
	   #:missing-component
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	   #:missing-dependency
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	   #:circular-dependency	; errors
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	   )
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  (:use :cl))
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#+nil
(error "The author of this file habitually uses #+nil to comment out forms.  But don't worry, it was unlikely to work in the New Implementation of Lisp anyway")


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(in-package #:asdf)

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(defvar *asdf-revision* (let* ((v "$Revision: 1.73 $")
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			       (colon (or (position #\: v) -1))
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			       (dot (position #\. v)))
			  (and v colon dot 
			       (list (parse-integer v :start (1+ colon)
						    :junk-allowed t)
				     (parse-integer v :start (1+ dot)
						    :junk-allowed t)))))

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(defvar *compile-file-warnings-behaviour* :warn)
(defvar *compile-file-failure-behaviour* #+sbcl :error #-sbcl :warn)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; utility stuff

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(defmacro aif (test then &optional else)
  `(let ((it ,test)) (if it ,then ,else)))

(defun pathname-sans-name+type (pathname)
  "Returns a new pathname with same HOST, DEVICE, DIRECTORY as PATHNAME,
and NIL NAME and TYPE components"
  (make-pathname :name nil :type nil :defaults pathname))
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(define-modify-macro appendf (&rest args) 
		     append "Append onto list") 

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;; classes, condiitons
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(define-condition system-definition-error (error) ()
  ;; [this use of :report should be redundant, but unfortunately it's not.
  ;; cmucl's lisp::output-instance prefers the kernel:slot-class-print-function
  ;; over print-object; this is always conditions::%print-condition for
  ;; condition objects, which in turn does inheritance of :report options at
  ;; run-time.  fortunately, inheritance means we only need this kludge here in
  ;; order to fix all conditions that build on it.  -- rgr, 28-Jul-02.]
  #+cmu (:report print-object))

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(define-condition formatted-system-definition-error (system-definition-error)
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  ((format-control :initarg :format-control :reader format-control)
   (format-arguments :initarg :format-arguments :reader format-arguments))
  (:report (lambda (c s)
	     (apply #'format s (format-control c) (format-arguments c)))))

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(define-condition circular-dependency (system-definition-error)
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  ((components :initarg :components :reader circular-dependency-components)))
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(define-condition missing-component (system-definition-error)
  ((requires :initform "(unnamed)" :reader missing-requires :initarg :requires)
   (version :initform nil :reader missing-version :initarg :version)
   (parent :initform nil :reader missing-parent :initarg :parent)))

(define-condition missing-dependency (missing-component)
  ((required-by :initarg :required-by :reader missing-required-by)))

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(define-condition operation-error (error)
  ((component :reader error-component :initarg :component)
   (operation :reader error-operation :initarg :operation))
  (:report (lambda (c s)
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	     (format s (formatter "~@<erred while invoking ~A on ~A~@:>")
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		     (error-operation c) (error-component c)))))
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(define-condition compile-error (operation-error) ())
(define-condition compile-failed (compile-error) ())
(define-condition compile-warned (compile-error) ())
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(defclass component ()
  ((name :type string :accessor component-name :initarg :name :documentation
	 "Component name, restricted to portable pathname characters")
   (version :accessor component-version :initarg :version)
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   (in-order-to :initform nil :initarg :in-order-to)
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   ;;; XXX crap name
   (do-first :initform nil :initarg :do-first)
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   ;; methods defined using the "inline" style inside a defsystem form:
   ;; need to store them somewhere so we can delete them when the system
   ;; is re-evaluated
   (inline-methods :accessor component-inline-methods :initform nil)
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   (parent :initarg :parent :initform nil :reader component-parent)
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   ;; no direct accessor for pathname, we do this as a method to allow
   ;; it to default in funky ways if not supplied
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   (relative-pathname :initarg :pathname)
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   (operation-times :initform (make-hash-table )
		    :accessor component-operation-times)
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   ;; XXX we should provide some atomic interface for updating the
   ;; component properties
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   (properties :accessor component-properties :initarg :properties
	       :initform nil)))
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;;;; methods: conditions

(defmethod print-object ((c missing-dependency) s)
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  (format s (formatter "~@<~A, required by ~A~@:>")
	  (call-next-method c nil)
	  (missing-required-by c)))
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(defun sysdef-error (format &rest arguments)
  (error 'formatted-system-definition-error :format-control format :format-arguments arguments))
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;;;; methods: components

(defmethod print-object ((c missing-component) s)
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  (format s (formatter "~@<component ~S not found~
                        ~@[ or does not match version ~A~]~
                        ~@[ in ~A~]~@:>")
	  (missing-requires c)
	  (missing-version c)
	  (when (missing-parent c)
	    (component-name (missing-parent c)))))
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(defgeneric component-system (component)
  (:documentation "Find the top-level system containing COMPONENT"))
  
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(defmethod component-system ((component component))
  (aif (component-parent component)
       (component-system it)
       component))

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(defmethod print-object ((c component) stream)
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  (print-unreadable-object (c stream :type t :identity t)
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    (ignore-errors
      (prin1 (component-name c) stream))))
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(defclass module (component)
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  ((components :initform nil :accessor module-components :initarg :components)
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   ;; what to do if we can't satisfy a dependency of one of this module's
   ;; components.  This allows a limited form of conditional processing
   (if-component-dep-fails :initform :fail
			   :accessor module-if-component-dep-fails
			   :initarg :if-component-dep-fails)
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   (default-component-class :accessor module-default-component-class
     :initform 'cl-source-file :initarg :default-component-class)))

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(defgeneric component-pathname (component)
  (:documentation "Extracts the pathname applicable for a particular component."))

(defun component-parent-pathname (component)
  (aif (component-parent component)
       (component-pathname it)
       *default-pathname-defaults*))

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(defgeneric component-relative-pathname (component)
  (:documentation "Extracts the relative pathname applicable for a particular component."))
   
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(defmethod component-relative-pathname ((component module))
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  (or (slot-value component 'relative-pathname)
      (make-pathname
       :directory `(:relative ,(component-name component))
       :host (pathname-host (component-parent-pathname component)))))

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(defmethod component-pathname ((component component))
  (let ((*default-pathname-defaults* (component-parent-pathname component)))
    (merge-pathnames (component-relative-pathname component))))

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(defgeneric component-property (component property))

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(defmethod component-property ((c component) property)
  (cdr (assoc property (slot-value c 'properties))))

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(defgeneric (setf component-property) (new-value component property))

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(defmethod (setf component-property) (new-value (c component) property)
  (let ((a (assoc property (slot-value c 'properties))))
    (if a
	(setf (cdr a) new-value)
	(setf (slot-value c 'properties)
	      (acons property new-value (slot-value c 'properties))))))


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(defclass system (module)
  ((description :accessor system-description :initarg :description)
   (long-description :accessor long-description :initarg :long-description)
   (author :accessor system-author :initarg :author)
   (maintainer :accessor system-maintainer :initarg :maintainer)
   (licence :accessor system-licence :initarg :licence)))

;;; version-satisfies

;;; with apologies to christophe rhodes ...
(defun split (string &optional max (ws '(#\Space #\Tab)))
  (flet ((is-ws (char) (find char ws)))
    (nreverse
     (let ((list nil) (start 0) (words 0) end)
       (loop
	(when (and max (>= words (1- max)))
	  (return (cons (subseq string start) list)))
	(setf end (position-if #'is-ws string :start start))
	(push (subseq string start end) list)
	(incf words)
	(unless end (return list))
	(setf start (1+ end)))))))

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(defgeneric version-satisfies (component version))

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(defmethod version-satisfies ((c component) version)
  (unless (and version (slot-boundp c 'version))
    (return-from version-satisfies t))
  (let ((x (mapcar #'parse-integer
		   (split (component-version c) nil '(#\.))))
	(y (mapcar #'parse-integer
		   (split version nil '(#\.)))))
    (labels ((bigger (x y)
	       (cond ((not y) t)
		     ((not x) nil)
		     ((> (car x) (car y)) t)
		     ((= (car x) (car y))
		      (bigger (cdr x) (cdr y))))))
      (and (= (car x) (car y))
	   (or (not (cdr y)) (bigger (cdr x) (cdr y)))))))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; finding systems

(defvar *defined-systems* (make-hash-table :test 'equal))
(defun coerce-name (name)
   (typecase name
     (component (component-name name))
     (symbol (string-downcase (symbol-name name)))
     (string name)
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     (t (sysdef-error (formatter "~@<invalid component designator ~A~@:>")
		      name))))
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;;; for the sake of keeping things reasonably neat, we adopt a
;;; convention that functions in this list are prefixed SYSDEF-

(defvar *system-definition-search-functions*
  '(sysdef-central-registry-search))

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(defun system-definition-pathname (system)
  (some (lambda (x) (funcall x system))
	*system-definition-search-functions*))
	
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(defvar *central-registry*
  '(*default-pathname-defaults*
    #+nil "/home/dan/src/sourceforge/cclan/asdf/systems/"
    #+nil "telent:asdf;systems;"))

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(defun sysdef-central-registry-search (system)
  (let ((name (coerce-name system)))
    (block nil
      (dolist (dir *central-registry*)
	(let* ((defaults (eval dir))
	       (file (and defaults
			  (make-pathname
			   :defaults defaults :version :newest
			   :name name :type "asd" :case :local))))
	  (if (and file (probe-file file))
	      (return file)))))))


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(defun find-system (name &optional (error-p t))
  (let* ((name (coerce-name name))
	 (in-memory (gethash name *defined-systems*))
	 (on-disk (system-definition-pathname name)))	 
    (when (and on-disk
	       (or (not in-memory)
		   (< (car in-memory) (file-write-date on-disk))))
      (let ((*package* (make-package (gensym (package-name #.*package*))
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				     :use '(:cl :asdf))))
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	(format t
		(formatter "~&~@<; ~@;loading system definition from ~A into ~A~@:>~%")
		;; FIXME: This wants to be (ENOUGH-NAMESTRING
		;; ON-DISK), but CMUCL barfs on that.
		on-disk
		*package*)
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	(load on-disk)))
    (let ((in-memory (gethash name *defined-systems*)))
      (if in-memory
	  (progn (if on-disk (setf (car in-memory) (file-write-date on-disk)))
		 (cdr in-memory))
	  (if error-p (error 'missing-component :requires name))))))

(defun register-system (name system)
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  (format t (formatter "~&~@<; ~@;registering ~A as ~A~@:>~%") system name)
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  (setf (gethash (coerce-name  name) *defined-systems*)
	(cons (get-universal-time) system)))

(defun system-registered-p (name)
  (gethash (coerce-name name) *defined-systems*))

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; finding components
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(defgeneric find-component (module name &optional version)
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  (:documentation "Finds the component with name NAME present in the
MODULE module; if MODULE is nil, then the component is assumed to be a
system."))

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(defmethod find-component ((module module) name &optional version)
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  (if (slot-boundp module 'components)
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      (let ((m (find name (module-components module)
		     :test #'equal :key #'component-name)))
	(if (and m (version-satisfies m version)) m))))
	    
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;;; a component with no parent is a system
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(defmethod find-component ((module (eql nil)) name &optional version)
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  (let ((m (find-system name nil)))
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    (if (and m (version-satisfies m version)) m)))
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;;; component subclasses

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(defclass source-file (component) ())

(defclass cl-source-file (source-file) ())
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(defclass c-source-file (source-file) ())
(defclass java-source-file (source-file) ())
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(defclass static-file (source-file) ())
(defclass doc-file (static-file) ())
(defclass html-file (doc-file) ())
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(defgeneric source-file-type (component system))
(defmethod source-file-type ((c cl-source-file) (s module)) "lisp")
(defmethod source-file-type ((c c-source-file) (s module)) "c")
(defmethod source-file-type ((c java-source-file) (s module)) "java")
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(defmethod source-file-type ((c html-file) (s module)) "html")
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(defmethod source-file-type ((c static-file) (s module)) nil)

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(defmethod component-relative-pathname ((component source-file))
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  (let* ((*default-pathname-defaults* (component-parent-pathname component))
	 (name-type
	  (make-pathname
	   :name (component-name component)
	   :type (source-file-type component
				   (component-system component)))))
    (if (slot-value component 'relative-pathname)
	(merge-pathnames
	 (slot-value component 'relative-pathname)
	 name-type)
	name-type)))
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; operations

;;; one of these is instantiated whenever (operate ) is called

(defclass operation ()
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  ((forced :initform nil :initarg :force :accessor operation-forced)
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   (original-initargs :initform nil :initarg :original-initargs
		      :accessor operation-original-initargs)
   (visited-nodes :initform nil :accessor operation-visited-nodes)
   (visiting-nodes :initform nil :accessor operation-visiting-nodes)
   (parent :initform nil :initarg :parent :accessor operation-parent)))

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(defmethod print-object ((o operation) stream)
  (print-unreadable-object (o stream :type t :identity t)
    (ignore-errors
      (prin1 (operation-original-initargs o) stream))))

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(defmethod shared-initialize :after ((operation operation) slot-names
				     &key force 
				     &allow-other-keys)
  (declare (ignore slot-names force))
  ;; empty method to disable initarg validity checking
  )
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(defgeneric perform (operation component))
(defgeneric operation-done-p (operation component))
(defgeneric explain (operation component))
(defgeneric output-files (operation component))
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(defgeneric input-files (operation component))
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(defun node-for (o c)
  (cons (class-name (class-of o)) c))

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(defgeneric operation-ancestor (operation)
  (:documentation   "Recursively chase the operation's parent pointer until we get to the head of the tree"))

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(defmethod operation-ancestor ((operation operation))
  (aif (operation-parent operation)
       (operation-ancestor it)
       operation))

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(defun make-sub-operation (c o dep-c dep-o)
  (let* ((args (copy-list (operation-original-initargs o)))
	 (force-p (getf args :force)))
    ;; note explicit comparison with T: any other non-NIL force value
    ;; (e.g. :recursive) will pass through
    (cond ((and (null (component-parent c))
		(null (component-parent dep-c))
		(not (eql c dep-c)))
	   (when (eql force-p t)
	     (setf (getf args :force) nil))
	   (apply #'make-instance dep-o
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		  :parent o
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		  :original-initargs args args))
	  ((subtypep (type-of o) dep-o)
	   o)
	  (t 
	   (apply #'make-instance dep-o
		  :parent o :original-initargs args args)))))

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(defgeneric visit-component (operation component data))
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(defmethod visit-component ((o operation) (c component) data)
  (unless (component-visited-p o c)
    (push (cons (node-for o c) data)
	  (operation-visited-nodes (operation-ancestor o)))))
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(defgeneric component-visited-p (operation component))
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(defmethod component-visited-p ((o operation) (c component))
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  (assoc (node-for o c)
	 (operation-visited-nodes (operation-ancestor o))
	 :test 'equal))
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(defgeneric (setf visiting-component) (new-value operation component))

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(defmethod (setf visiting-component) (new-value operation component)
  ;; MCL complains about unused lexical variables
  (declare (ignorable new-value operation component)))
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(defmethod (setf visiting-component) (new-value (o operation) (c component))
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  (let ((node (node-for o c))
	(a (operation-ancestor o)))
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    (if new-value
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	(pushnew node (operation-visiting-nodes a) :test 'equal)
	(setf (operation-visiting-nodes a)
	      (remove node  (operation-visiting-nodes a) :test 'equal)))))
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(defgeneric component-visiting-p (operation component))

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(defmethod component-visiting-p ((o operation) (c component))
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  (let ((node (cons o c)))
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    (member node (operation-visiting-nodes (operation-ancestor o))
	    :test 'equal)))
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(defgeneric component-depends-on (operation component))

(defmethod component-depends-on ((o operation) (c component))
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  (cdr (assoc (class-name (class-of o))
	      (slot-value c 'in-order-to))))
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(defgeneric component-self-dependencies (operation component))

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(defmethod component-self-dependencies ((o operation) (c component))
  (let ((all-deps (component-depends-on o c)))
    (remove-if-not (lambda (x)
		     (member (component-name c) (cdr x) :test #'string=))
		   all-deps)))
    
(defmethod input-files ((operation operation) (c component))
  (let ((parent (component-parent c))
	(self-deps (component-self-dependencies operation c)))
    (if self-deps
	(mapcan (lambda (dep)
		  (destructuring-bind (op name) dep
		    (output-files (make-instance op)
				  (find-component parent name))))
		self-deps)
	;; no previous operations needed?  I guess we work with the 
	;; original source file, then
	(list (component-pathname c)))))

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(defmethod input-files ((operation operation) (c module)) nil)
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(defmethod operation-done-p ((o operation) (c component))
  (let ((out-files (output-files o c))
	(in-files (input-files o c)))
    (cond ((and (not in-files) (not out-files))
	   ;; arbitrary decision: an operation that uses nothing to
	   ;; produce nothing probably isn't doing much 
	   t)
	  ((not out-files) 
	   (let ((op-done
		  (gethash (type-of o)
			   (component-operation-times c))))
	     (and op-done
		  (>= op-done
		      (or (apply #'max
				 (mapcar #'file-write-date in-files)) 0)))))
	  ((not in-files) nil)
	  (t
	   (and
	    (every #'probe-file out-files)
	    (> (apply #'min (mapcar #'file-write-date out-files))
	       (apply #'max (mapcar #'file-write-date in-files)) ))))))
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;;; So you look at this code and think "why isn't it a bunch of
;;; methods".  And the answer is, because standard method combination
;;; runs :before methods most->least-specific, which is back to front
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;;; for our purposes.  And CLISP doesn't have non-standard method
;;; combinations, so let's keep it simple and aspire to portability
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(defgeneric traverse (operation component))
(defmethod traverse ((operation operation) (c component))
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  (let ((forced nil))
    (labels ((do-one-dep (required-op required-c required-v)
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	       (let* ((dep-c (or (find-component
				  (component-parent c)
				  ;; XXX tacky.  really we should build the
				  ;; in-order-to slot with canonicalized
				  ;; names instead of coercing this late
				  (coerce-name required-c) required-v)
				 (error 'missing-dependency :required-by c
					:version required-v
					:requires required-c)))
		      (op (make-sub-operation c operation dep-c required-op)))
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		 (traverse op dep-c)))	   	   
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	     (do-dep (op dep)
	       (cond ((eq op 'feature)
		      (or (member (car dep) *features*)
			  (error 'missing-dependency :required-by c
				 :requires (car dep) :version nil)))
		     (t
		      (dolist (d dep)
                        (cond ((consp d)
                               (assert (string-equal
                                        (symbol-name (first d))
                                        "VERSION"))
                               (appendf forced
					(do-one-dep op (second d) (third d))))
                              (t
                               (appendf forced (do-one-dep op d nil)))))))))
      (aif (component-visited-p operation c)
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	   (return-from traverse
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	     (if (cdr it) (list (cons 'pruned-op c)) nil)))
      ;; dependencies
      (if (component-visiting-p operation c)
	  (error 'circular-dependency :components (list c)))
      (setf (visiting-component operation c) t)
      (loop for (required-op . deps) in (component-depends-on operation c)
	    do (do-dep required-op deps))
      ;; constituent bits
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      (let ((module-ops
	     (when (typep c 'module)
	       (let ((at-least-one nil)
		     (forced nil)
		     (error nil))
		 (loop for kid in (module-components c)
		       do (handler-case
			      (appendf forced (traverse operation kid ))
			    (missing-dependency (condition)
			      (if (eq (module-if-component-dep-fails c) :fail)
				  (error condition))
			      (setf error condition))
			    (:no-error (c)
			      (declare (ignore c))
			      (setf at-least-one t))))
		 (when (and (eq (module-if-component-dep-fails c) :try-next)
			    (not at-least-one))
		   (error error))
		 forced))))
	;; now the thing itself
	(when (or forced module-ops
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		  (not (operation-done-p operation c))
		  (let ((f (operation-forced (operation-ancestor operation))))
		    (and f (or (not (consp f))
			       (member (component-name
					(operation-ancestor operation))
				       (mapcar #'coerce-name f)
				       :test #'string=)))))
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	  (let ((do-first (cdr (assoc (class-name (class-of operation))
				      (slot-value c 'do-first)))))
	    (loop for (required-op . deps) in do-first
		  do (do-dep required-op deps)))
	  (setf forced (append (delete 'pruned-op forced :key #'car)
			       (delete 'pruned-op module-ops :key #'car)
			       (list (cons operation c))))))
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      (setf (visiting-component operation c) nil)
      (visit-component operation c (and forced t))
      forced)))
  
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(defmethod perform ((operation operation) (c source-file))
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  (sysdef-error
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   (formatter "~@<required method PERFORM not implemented~
               for operation ~A, component ~A~@:>")
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   (class-of operation) (class-of c)))

(defmethod perform ((operation operation) (c module))
  nil)

(defmethod explain ((operation operation) (component component))
  (format *trace-output* "~&;;; ~A on ~A~%"
	  operation component))

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;;; compile-op
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(defclass compile-op (operation)
  ((proclamations :initarg :proclamations :accessor compile-op-proclamations :initform nil)
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   (on-warnings :initarg :on-warnings :accessor operation-on-warnings
		:initform *compile-file-warnings-behaviour*)
   (on-failure :initarg :on-failure :accessor operation-on-failure
	       :initform *compile-file-failure-behaviour*)))
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(defmethod perform :before ((operation compile-op) (c source-file))
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  (map nil #'ensure-directories-exist (output-files operation c)))
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(defmethod perform :after ((operation operation) (c component))
  (setf (gethash (type-of operation) (component-operation-times c))
	(get-universal-time)))
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;;; perform is required to check output-files to find out where to put
;;; its answers, in case it has been overridden for site policy
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(defmethod perform ((operation compile-op) (c cl-source-file))
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  (let ((source-file (component-pathname c))
	(output-file (car (output-files operation c))))
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    (multiple-value-bind (output warnings-p failure-p)
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	(compile-file source-file
		      :output-file output-file)
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      ;(declare (ignore output))
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      (when warnings-p
	(case (operation-on-warnings operation)
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	  (:warn (warn "COMPILE-FILE warned while performing ~A on ~A"
		       c operation))
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	  (:error (error 'compile-warned :component c :operation operation))
	  (:ignore nil)))
      (when failure-p
	(case (operation-on-failure operation)
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	  (:warn (warn "COMPILE-FILE failed while performing ~A on ~A"
		       c operation))
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	  (:error (error 'compile-failed :component c :operation operation))
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	  (:ignore nil)))
      (unless output
	(error 'compile-error :component c :operation operation)))))
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(defmethod output-files ((operation compile-op) (c cl-source-file))
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  (list (compile-file-pathname (component-pathname c))))

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(defmethod perform ((operation compile-op) (c static-file))
  nil)

(defmethod output-files ((operation compile-op) (c static-file))
  nil)

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;;; load-op
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(defclass load-op (operation) ())
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(defmethod perform ((o load-op) (c cl-source-file))
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  (mapcar #'load (input-files o c)))
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(defmethod perform ((operation load-op) (c static-file))
  nil)
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(defmethod operation-done-p ((operation load-op) (c static-file))
  t)
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(defmethod output-files ((o operation) (c component))
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  nil)
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(defmethod component-depends-on ((operation load-op) (c component))
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  (cons (list 'compile-op (component-name c))
        (call-next-method)))

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;;; load-source-op

(defclass load-source-op (operation) ())

(defmethod perform ((o load-source-op) (c cl-source-file))
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  (let ((source (component-pathname c)))
    (setf (component-property c 'last-loaded-as-source)
          (and (load source)
               (get-universal-time)))))

(defmethod perform ((operation load-source-op) (c static-file))
  nil)

(defmethod output-files ((operation load-source-op) (c component))
  nil)

;;; FIXME: we simply copy load-op's dependencies.  this is Just Not Right.
(defmethod component-depends-on ((o load-source-op) (c component))
  (let ((what-would-load-op-do (cdr (assoc 'load-op
                                           (slot-value c 'in-order-to)))))
    (mapcar (lambda (dep)
              (if (eq (car dep) 'load-op)
                  (cons 'load-source-op (cdr dep))
                  dep))
            what-would-load-op-do)))

(defmethod operation-done-p ((o load-source-op) (c source-file))
  (if (or (not (component-property c 'last-loaded-as-source))
	  (> (file-write-date (component-pathname c))
	     (component-property c 'last-loaded-as-source)))
      nil t))
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(defclass test-op (operation) ())

(defmethod perform ((operation test-op) (c component))
  nil)
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; invoking operations

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(defun operate (operation-class system &rest args)
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  (let* ((op (apply #'make-instance operation-class
		    :original-initargs args args))
	 (system (if (typep system 'component) system (find-system system)))
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	 (steps (traverse op system)))
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    (with-compilation-unit ()
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      (loop for (op . component) in steps do
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	    (loop
	     (restart-case 
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		 (progn (perform op component)
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			(return))
	       (retry-component ())
	       (skip-component () (return))))))))
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(defun oos (&rest args)
  "Alias of OPERATE function"
  (apply #'operate args))

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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;; syntax

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(defun remove-keyword (key arglist)
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  (labels ((aux (key arglist)
	     (cond ((null arglist) nil)
		   ((eq key (car arglist)) (cddr arglist))
		   (t (cons (car arglist) (cons (cadr arglist)
						(remove-keyword
						 key (cddr arglist))))))))
    (aux key arglist)))
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(defmacro defsystem (name &body options)
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  (destructuring-bind (&key pathname (class 'system) &allow-other-keys) options
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    (let ((component-options (remove-keyword :class options)))
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      `(progn
	;; system must be registered before we parse the body, otherwise
	;; we recur when trying to find an existing system of the same name
	;; to reuse options (e.g. pathname) from
	(let ((s (system-registered-p ',name)))
	  (cond ((and s (eq (type-of (cdr s)) ',class))
		 (setf (car s) (get-universal-time)))
		(s
		 #+clisp
		 (sysdef-error "Cannot redefine the existing system ~A with a different class" s)
		 #-clisp
		 (change-class (cdr s) ',class))
		(t
		 (register-system (quote ,name)
				  (make-instance ',class :name ',name)))))
	(parse-component-form nil (apply
				   #'list
				   :module (coerce-name ',name)
				   :pathname
				   (or ,pathname
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				       (pathname-sans-name+type
					(resolve-symlinks *load-truename*))
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				       *default-pathname-defaults*)
				   ',component-options))))))
  
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(defun class-for-type (parent type)
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  (let ((class (find-class
		(or (find-symbol (symbol-name type) *package*)
		    (find-symbol (symbol-name type) #.*package*)) nil)))
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    (or class
	(and (eq type :file)
	     (or (module-default-component-class parent)
		 (find-class 'cl-source-file)))
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	(sysdef-error (formatter "~@<don't recognize component type ~A~@:>")
		      type))))
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(defun maybe-add-tree (tree op1 op2 c)
  "Add the node C at /OP1/OP2 in TREE, unless it's there already.
Returns the new tree (which probably shares structure with the old one)"
  (let ((first-op-tree (assoc op1 tree)))
    (if first-op-tree
	(progn
	  (aif (assoc op2 (cdr first-op-tree))
	       (if (find c (cdr it))
		   nil
		   (setf (cdr it) (cons c (cdr it))))
	       (setf (cdr first-op-tree)
		     (acons op2 (list c) (cdr first-op-tree))))
	  tree)
	(acons op1 (list (list op2 c)) tree))))
		
(defun union-of-dependencies (&rest deps)
  (let ((new-tree nil))
    (dolist (dep deps)
      (dolist (op-tree dep)
	(dolist (op  (cdr op-tree))
	  (dolist (c (cdr op))
	    (setf new-tree
		  (maybe-add-tree new-tree (car op-tree) (car op) c))))))
    new-tree))
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(defun remove-keys (key-names args)
  (loop for ( name val ) on args by #'cddr
	unless (member (symbol-name name) key-names 
		       :key #'symbol-name :test 'equal)
	append (list name val)))

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(defvar *serial-depends-on*)

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(defun parse-component-form (parent options)
  (destructuring-bind
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	(type name &rest rest &key
	      ;; the following list of keywords is reproduced below in the
	      ;; remove-keys form.  important to keep them in sync
	      components pathname default-component-class
	      perform explain output-files operation-done-p
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	      depends-on serial in-order-to
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	      ;; list ends
	      &allow-other-keys) options
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    (check-component-input type name depends-on components in-order-to)
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    (let* ((other-args (remove-keys
			'(components pathname default-component-class
			  perform explain output-files operation-done-p
			  depends-on serial in-order-to)
			rest))
	   (ret
	    (or (find-component parent name)
		(make-instance (class-for-type parent type)))))
      (when (boundp '*serial-depends-on*)
	(setf depends-on
	      (concatenate 'list *serial-depends-on* depends-on)))
      (apply #'reinitialize-instance
	     ret
	     :name (coerce-name name)
	     :pathname pathname
	     :parent parent
	     other-args)
      (when (typep ret 'module)
	(setf (module-default-component-class ret)
	      (or default-component-class
		  (and (typep parent 'module)
		       (module-default-component-class parent))))
	(let ((*serial-depends-on* nil))
	  (setf (module-components ret)
		(loop for c-form in components
		      for c = (parse-component-form ret c-form)
		      collect c
		      if serial
		      do (push (component-name c) *serial-depends-on*)))))
      
      (setf (slot-value ret 'in-order-to)
	    (union-of-dependencies
	     in-order-to
	     `((compile-op (compile-op ,@depends-on))
	       (load-op (load-op ,@depends-on))))
	    (slot-value ret 'do-first) `((compile-op (load-op ,@depends-on))))
      
      (loop for (n v) in `((perform ,perform) (explain ,explain)
			   (output-files ,output-files)
			   (operation-done-p ,operation-done-p))
	    do (map 'nil
		    ;; this is inefficient as most of the stored
		    ;; methods will not be for this particular gf n
		    ;; But this is hardly performance-critical
		    (lambda (m) (remove-method (symbol-function n) m))
		    (component-inline-methods ret))
	    when v
	    do (destructuring-bind (op qual (o c) &body body) v
		 (pushnew
		  (eval `(defmethod ,n ,qual ((,o ,op) (,c (eql ,ret)))
			  ,@body))
		  (component-inline-methods ret))))
      ret)))
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(defun check-component-input (type name depends-on components in-order-to)
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  "A partial test of the values of a component."
  (unless (listp depends-on)
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    (sysdef-error-component ":depends-on must be a list."
			    type name depends-on))
  (unless (listp components)
    (sysdef-error-component ":components must be NIL or a list of components."
			    type name components))
  (unless (and (listp in-order-to) (listp (car in-order-to)))
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    (sysdef-error-component ":in-order-to must be NIL or a list of components."
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			   type name in-order-to)))

(defun sysdef-error-component (msg type name value)
  (sysdef-error (concatenate 'string msg
			     "~&The value specified for ~(~A~) ~A is ~W")
		type name value))
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(defun resolve-symlinks (path)
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  #-allegro (truename path)
  #+allegro (excl:pathname-resolve-symbolic-links path)
  )
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;;; optional extras

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;;; run-shell-command functions for other lisp implementations will be
;;; gratefully accepted, if they do the same thing.  If the docstring
;;; is ambiguous, send a bug report

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(defun run-shell-command (control-string &rest args)
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  "Interpolate ARGS into CONTROL-STRING as if by FORMAT, and
synchronously execute the result using a Bourne-compatible shell, with
output to *trace-output*.  Returns the shell's exit code."
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  (let ((command (apply #'format nil control-string args)))
    (format *trace-output* "; $ ~A~%" command)
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    #+sbcl
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    (sb-impl::process-exit-code
     (sb-ext:run-program  
      "/bin/sh"
      (list  "-c" command)
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      :input nil :output *trace-output*))
    
    #+(or cmu scl)
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    (ext:process-exit-code
     (ext:run-program  
      "/bin/sh"
      (list  "-c" command)
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      :input nil :output *trace-output*))

    #+allegro
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    (excl:run-shell-command command :input nil :output *trace-output*)
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    #+lispworks
    (system:call-system-showing-output
     command
     :shell-type "/bin/sh"
     :output-stream *trace-output*)
    
    #+clisp				;XXX not exactly *trace-output*, I know
    (ext:run-shell-command  command :output :terminal :wait t)

    #+openmcl
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    (nth-value 1
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	       (ccl:external-process-status
		(ccl:run-program "/bin/sh" (list "-c" command)
				 :input nil :output *trace-output*
				 :wait t)))

    #-(or openmcl clisp lispworks allegro scl cmu sbcl)
    (error "RUN-SHELL-PROGRAM not implemented for this Lisp")
    ))
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(defgeneric hyperdocumentation (package name doc-type))
(defmethod hyperdocumentation ((package symbol) name doc-type)
  (hyperdocumentation (find-package package) name doc-type))

(defun hyperdoc (name doc-type)
  (hyperdocumentation (symbol-package name) name doc-type))


Daniel Barlow's avatar
Daniel Barlow committed
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(pushnew :asdf *features*)
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#+sbcl
(eval-when (:compile-toplevel :load-toplevel :execute)
  (when (sb-ext:posix-getenv "SBCL_BUILDING_CONTRIB")
    (pushnew :sbcl-hooks-require *features*)))

#+(and sbcl sbcl-hooks-require)
(progn
  (defun module-provide-asdf (name)
    (let ((system (asdf:find-system name nil)))
      (when system
	(asdf:operate 'asdf:load-op name)
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	t)))
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  (pushnew
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   '(merge-pathnames "systems/"
     (truename (sb-ext:posix-getenv "SBCL_HOME")))
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   *central-registry*)
  
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  (pushnew
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   '(merge-pathnames "site-systems/"
     (truename (sb-ext:posix-getenv "SBCL_HOME")))
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   *central-registry*)
  
  (pushnew
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   '(merge-pathnames ".sbcl/systems/"
     (user-homedir-pathname))
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   *central-registry*)
  
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  (pushnew 'module-provide-asdf sb-ext:*module-provider-functions*))