(define-pluggable-parser module code (scanner pset)
;; `code' id `:' item-name [constraints] `{' c-fragment `}'
+ ;; `code' id `:' constraints `;'
;;
;; constraints ::= `[' list[constraint] `]'
;; constraint ::= item-name+
(item ()
(parse (or (kw)
(seq (#\( (names (list (:min 1) (kw))) #\))
- names)))))
+ names))))
+ (constraints ()
+ (parse (seq (#\[
+ (constraints
+ (list ()
+ (list (:min 1)
+ (error (:ignore-unconsumed t) (item)
+ (skip-until () :id #\( #\, #\])))
+ #\,))
+ #\])
+ constraints)))
+ (fragment ()
+ (parse-delimited-fragment scanner #\{ #\})))
(parse (seq ("code"
(reason (must (kw)))
(nil (must #\:))
- (name (must (item)))
- (constraints (? (seq (#\[
- (constraints
- (list ()
- (list (:min 1)
- (error (:ignore-unconsumed t)
- (item)
- (skip-until ()
- :id #\( #\, #\])))
- #\,))
- #\])
- constraints)))
- (fragment (parse-delimited-fragment scanner #\{ #\})))
- (when name
- (add-to-module *module*
- (make-instance 'code-fragment-item
- :fragment fragment
- :constraints constraints
- :reason reason
- :name name))))))))
+ (item (or (seq ((constraints (constraints))
+ (nil (must #\;)))
+ (make-instance 'code-fragment-item
+ :reason reason
+ :constraints constraints))
+ (seq ((name (must (item)))
+ (constraints (? (constraints)))
+ (fragment (fragment)))
+ (and name
+ (make-instance 'code-fragment-item
+ :reason reason
+ :constraints constraints
+ :name name
+ :fragment fragment))))))
+ (when item (add-to-module *module* item)))))))
;;; External files.
(unless truep (setf truename (truename pathname)))
(define-module (pathname :location location :truename truename)
(with-open-file (f-stream pathname :direction :input)
- (let* ((*readtable* (copy-readtable))
- (*package* (find-package '#:sod-user))
- (char-scanner (make-instance 'charbuf-scanner
+ (let* ((char-scanner (make-instance 'charbuf-scanner
:stream f-stream
:filename (namestring pathname)))
(scanner (make-instance 'sod-token-scanner
(declare (ignore consumedp))
(unless winp (syntax-error scanner result)))))))))
-(define-pluggable-parser module test (scanner pset)
- ;; `demo' string `;'
- (declare (ignore pset))
- (with-parser-context (token-scanner-context :scanner scanner)
- (parse (seq ("demo" (string (must :string)) (nil (must #\;)))
- (format t ";; DEMO ~S~%" string)))))
-
(define-pluggable-parser module file (scanner pset)
;; `import' string `;'
;; `load' string `;'
(declare (ignore pset))
(flet ((common (name type what thunk)
(when name
- (find-file scanner
+ (find-file (pathname (scanner-filename scanner))
(merge-pathnames name
(make-pathname :type type
:case :common))
:truename true)))
(when module
(module-import module)
+ (pushnew path (module-files *module*))
(pushnew module
(module-dependencies
*module*))))
(common name "LISP" "Lisp file"
(lambda (path true)
(handler-case
- (load true :verbose nil :print nil)
+ (progn
+ (pushnew path (module-files *module*))
+ (load true :verbose nil :print nil))
(error (error)
(cerror* "Error loading Lisp file ~S: ~A"
path error)))))))))))
(scanner-step scanner)
(values sexp t t))
(values '((:id "lisp")) nil nil)))
- #\;)
+ (nil (must #\;)))
(eval sexp)))))
;;;--------------------------------------------------------------------------
+;;; Static instances.
+
+(define-pluggable-parser module instance (scanner pset)
+ ;; `instance' id id list[slot-initializer] `;'
+ (with-parser-context (token-scanner-context :scanner scanner)
+ (let ((duff nil)
+ (floc nil)
+ (empty-pset (make-property-set)))
+ (parse (seq ("instance"
+ (class (seq ((class-name (must :id)))
+ (setf floc (file-location scanner))
+ (restart-case (find-sod-class class-name)
+ (continue ()
+ (setf duff t)
+ nil))))
+ (name (must :id))
+ (inits (? (seq (#\:
+ (inits (list (:min 0)
+ (seq ((nick (must :id))
+ #\.
+ (name (must :id))
+ (value
+ (parse-delimited-fragment
+ scanner #\= '(#\, #\;)
+ :keep-end t)))
+ (make-sod-instance-initializer
+ class nick name value
+ empty-pset
+ :add-to-class nil
+ :location scanner))
+ #\,)))
+ inits)))
+ #\;)
+ (unless duff
+ (acond ((find-if (lambda (item)
+ (and (typep item 'static-instance)
+ (string= (static-instance-name item)
+ name)))
+ (module-items *module*))
+ (cerror*-with-location floc
+ "Instance with name `~A' ~
+ already defined."
+ name)
+ (info-with-location (file-location it)
+ "Previous definition was ~
+ here."))
+ (t
+ (add-to-module *module*
+ (make-static-instance class name
+ inits
+ pset
+ floc))))))))))
+
+;;;--------------------------------------------------------------------------
;;; Class declarations.
(export 'class-item)
(parse (seq ((make (or (seq ("init") #'make-sod-class-initfrag)
(seq ("teardown") #'make-sod-class-tearfrag)))
(frag (parse-delimited-fragment scanner #\{ #\})))
- (funcall make class frag pset scanner)))))
+ (funcall make class frag pset :location scanner)))))
(define-pluggable-parser class-item initargs (scanner class pset)
;; initarg-item ::= `initarg' declspec+ list[init-declarator]
(make-sod-user-initarg class
(cdr declarator)
(car declarator)
- pset init scanner))
+ pset
+ :default init
+ :location scanner))
#\,))
- #\;)))))
+ (nil (must #\;)))))))
+
+(defun synthetic-name ()
+ "Return an obviously bogus synthetic not-identifier."
+ (let ((ix *temporary-index*))
+ (incf *temporary-index*)
+ (make-instance 'temporary-variable :tag (format nil "%%#~A" ix))))
(defun parse-class-body (scanner pset name supers)
;; class-body ::= `{' class-item* `}'
;;
;; class-item ::= property-set raw-class-item
(with-parser-context (token-scanner-context :scanner scanner)
- (make-class-type name)
- (let* ((duff nil)
- (class (make-sod-class name
- (restart-case
- (mapcar #'find-sod-class supers)
- (continue ()
- (setf duff t)
- (list (find-sod-class "SodObject"))))
- pset scanner))
+ (when name (make-class-type name))
+ (let* ((duff (null name))
+ (superclasses
+ (let ((superclasses (restart-case
+ (mapcar #'find-sod-class
+ (or supers (list "SodObject")))
+ (continue ()
+ (setf duff t)
+ (list (find-sod-class "SodObject"))))))
+ (find-duplicates (lambda (first second)
+ (declare (ignore second))
+ (setf duff t)
+ (cerror* "Class `~A' has duplicate ~
+ direct superclass `~A'"
+ name first))
+ superclasses)
+ (delete-duplicates superclasses)))
+ (synthetic-name (or name
+ (let ((var (synthetic-name)))
+ (unless pset
+ (setf pset (make-property-set)))
+ (unless (pset-get pset "nick")
+ (add-property pset "nick" var :type :id))
+ var)))
+ (class (make-sod-class synthetic-name superclasses pset
+ :location scanner))
(nick (sod-class-nickname class)))
- (labels ((parse-maybe-dotted-declarator (base-type)
- ;; Parse a declarator or dotted-declarator, i.e., one whose
- ;; centre is
- ;;
- ;; maybe-dotted-identifier ::= [id `.'] id
+ (labels ((must-id ()
+ (parse (must :id (progn (setf duff t) (synthetic-name)))))
+
+ (parse-maybe-dotted-name ()
+ ;; maybe-dotted-name ::= [id `.'] id
;;
;; A plain identifier is returned as a string, as usual; a
;; dotted identifier is returned as a cons cell of the two
;; names.
- (parse-declarator
- scanner base-type
- :keywordp t
- :kernel (parser ()
- (seq ((name-a :id)
- (name-b (? (seq (#\. (id :id)) id))))
- (if name-b (cons name-a name-b)
- name-a)))))
+ (parse (seq ((name-a (must-id))
+ (name-b (? (seq (#\. (id (must-id))) id))))
+ (if name-b (cons name-a name-b)
+ name-a))))
+
+ (parse-maybe-dotted-declarator (base-type)
+ ;; Parse a declarator or dotted-declarator, i.e., one whose
+ ;; centre is maybe-dotted-name above.
+ (parse-declarator scanner base-type
+ :keywordp t
+ :kernel #'parse-maybe-dotted-name))
(parse-message-item (sub-pset type name)
;; message-item ::=
;; Don't allow a method-body here if the message takes a
;; varargs list, because we don't have a name for the
;; `va_list' parameter.
- (let ((message (make-sod-message class name type
- sub-pset scanner)))
+ (let ((message (make-sod-message class name type sub-pset
+ :location scanner)))
(if (varargs-message-p message)
(parse #\;)
(parse (or #\; (parse-method-item sub-pset
(parse (seq ((body (or (seq ("extern" #\;) nil)
(parse-delimited-fragment
scanner #\{ #\}))))
- (make-sod-method class sub-nick name type
- body sub-pset scanner))))
+ (restart-case
+ (make-sod-method class sub-nick name type
+ body sub-pset
+ :location scanner)
+ (continue () :report "Continue")))))
(parse-initializer ()
;; initializer ::= `=' c-fragment
;;
;; Return a VALUE, ready for passing to a `sod-initializer'
;; constructor.
- (parse-delimited-fragment scanner #\= (list #\, #\;)
+ (parse-delimited-fragment scanner #\= '(#\, #\;)
:keep-end t))
(parse-slot-item (sub-pset base-type type name)
;; [`,' list[init-declarator]] `;'
;;
;; init-declarator ::= declarator [initializer]
- (parse (and (seq ((init (? (parse-initializer))))
- (make-sod-slot class name type
- sub-pset scanner)
- (when init
- (make-sod-instance-initializer
- class nick name init sub-pset scanner)))
- (skip-many ()
- (seq (#\,
- (ds (parse-declarator scanner
- base-type))
- (init (? (parse-initializer))))
- (make-sod-slot class (cdr ds) (car ds)
- sub-pset scanner)
- (when init
- (make-sod-instance-initializer
- class nick (cdr ds) init
- sub-pset scanner))))
- #\;)))
+ (flet ((make-it (name type init)
+ (restart-case
+ (progn
+ (make-sod-slot class name type sub-pset
+ :location scanner)
+ (when init
+ (make-sod-instance-initializer
+ class nick name init sub-pset
+ :location scanner)))
+ (continue () :report "Continue"))))
+ (parse (and (error ()
+ (seq ((init (? (parse-initializer))))
+ (make-it name type init))
+ (skip-until () #\, #\;))
+ (skip-many ()
+ (error (:ignore-unconsumed t)
+ (seq (#\,
+ (ds (parse-declarator scanner
+ base-type))
+ (init (? (parse-initializer))))
+ (make-it (cdr ds) (car ds) init))
+ (skip-until () #\, #\;)))
+ (must #\;)))))
(parse-initializer-item (sub-pset must-init-p constructor)
;; initializer-item ::=
(let ((parse-init (if must-init-p #'parse-initializer
(parser () (? (parse-initializer))))))
(parse (and (skip-many ()
- (seq ((name-a :id) #\. (name-b :id)
- (init (funcall parse-init)))
- (funcall constructor class
- name-a name-b init
- sub-pset scanner))
+ (error (:ignore-unconsumed t)
+ (seq ((name-a :id) #\.
+ (name-b (must-id))
+ (init (funcall parse-init)))
+ (restart-case
+ (funcall constructor class
+ name-a name-b init
+ sub-pset
+ :location scanner)
+ (continue () :report "Continue")))
+ (skip-until () #\, #\;))
#\,)
- #\;))))
+ (must #\;)))))
(class-item-dispatch (sub-pset base-type type name)
;; Logically part of `parse-raw-class-item', but the
(parse-initializer-item sub-pset nil
#'make-sod-instance-initializer)))))
- (parse (seq (#\{
+ (parse (seq ((nil (must #\{))
(nil (skip-many ()
(seq ((sub-pset (parse-property-set scanner))
(nil (parse-raw-class-item sub-pset)))
(check-unused-properties sub-pset))))
- (nil (error () #\})))
+ (nil (must #\})))
(unless (finalize-sod-class class)
(setf duff t))
(unless duff
;; `class' id `;'
(with-parser-context (token-scanner-context :scanner scanner)
(parse (seq ("class"
- (name :id)
+ (name (must :id))
(nil (or (seq (#\;)
- (make-class-type name))
- (seq ((supers (seq (#\: (ids (list () :id #\,)))
- ids))
+ (when name (make-class-type name)))
+ (seq ((supers (must (seq (#\:
+ (ids (list () :id #\,)))
+ ids)))
(nil (parse-class-body
scanner
pset name supers)))))))))))
~mdw / sod / blobdiff