+(export 'class-item)
+
+(define-pluggable-parser class-item initfrags (scanner class pset)
+ ;; raw-class-item ::= frag-keyword `{' c-fragment `}'
+ ;; frag-keyword ::= `init' | `teardown'
+ (with-parser-context (token-scanner-context :scanner scanner)
+ (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)))))
+
+(define-pluggable-parser class-item initargs (scanner class pset)
+ ;; initarg-item ::= `initarg' declspec+ list[init-declarator]
+ ;; init-declarator ::= declarator [`=' initializer]
+ (with-parser-context (token-scanner-context :scanner scanner)
+ (parse (seq ("initarg"
+ (base-type (parse-c-type scanner))
+ (nil (skip-many (:min 1)
+ (seq ((declarator (parse-declarator scanner
+ base-type))
+ (init (? (parse-delimited-fragment
+ scanner #\= (list #\; #\,)
+ :keep-end t))))
+ (make-sod-user-initarg class
+ (cdr declarator)
+ (car declarator)
+ pset init scanner))
+ #\,))
+ #\;)))))
+
+(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))
+ (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
+ ;;
+ ;; 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-message-item (sub-pset type name)
+ ;; message-item ::=
+ ;; declspec+ declarator -!- (method-body | `;')
+ ;;
+ ;; 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)))
+ (if (varargs-message-p message)
+ (parse #\;)
+ (parse (or #\; (parse-method-item sub-pset
+ type nick name))))))
+
+ (parse-method-item (sub-pset type sub-nick name)
+ ;; method-item ::=
+ ;; declspec+ dotted-declarator -!- method-body
+ ;;
+ ;; method-body ::= `{' c-fragment `}' | `extern' `;'
+ (parse (seq ((body (or (seq ("extern" #\;) nil)
+ (parse-delimited-fragment
+ scanner #\{ #\}))))
+ (make-sod-method class sub-nick name type
+ body sub-pset scanner))))
+
+ (parse-initializer ()
+ ;; initializer ::= `=' c-fragment
+ ;;
+ ;; Return a VALUE, ready for passing to a `sod-initializer'
+ ;; constructor.
+ (parse-delimited-fragment scanner #\= (list #\, #\;)
+ :keep-end t))
+
+ (parse-slot-item (sub-pset base-type type name)
+ ;; slot-item ::=
+ ;; declspec+ declarator -!- [initializer]
+ ;; [`,' 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))))
+ #\;)))
+
+ (parse-initializer-item (sub-pset must-init-p constructor)
+ ;; initializer-item ::=
+ ;; [`class'] -!- list[slot-initializer] `;'
+ ;;
+ ;; slot-initializer ::= id `.' id [initializer]
+ (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))
+ #\,)
+ #\;))))
+
+ (class-item-dispatch (sub-pset base-type type name)
+ ;; Logically part of `parse-raw-class-item', but the
+ ;; indentation was getting crazy. We're currently at
+ ;;
+ ;; raw-class-item ::=
+ ;; declspec+ (declarator | dotted-declarator) -!- ...
+ ;; | other-items
+ ;;
+ ;; If the declarator is dotted then this must be a method
+ ;; definition; otherwise it might be a message or slot.
+ (cond ((not (typep type 'c-function-type))
+ (when (consp name)
+ (cerror*-with-location
+ scanner
+ "Method declarations must have function type")
+ (setf name (cdr name)))
+ (parse-slot-item sub-pset base-type type name))
+ ((consp name)
+ (parse-method-item sub-pset type
+ (car name) (cdr name)))
+ (t
+ (parse-message-item sub-pset type name))))
+
+ (parse-raw-class-item (sub-pset)
+ ;; raw-class-item ::=
+ ;; message-item
+ ;; | method-item
+ ;; | slot-item
+ ;; | initializer-item
+ ;; | initfrag-item
+ ;;
+ ;; Most of the above begin with declspecs and a declarator
+ ;; (which might be dotted). So we parse that here and
+ ;; dispatch based on what we find.
+ (parse (or (plug class-item scanner class sub-pset)
+ (peek
+ (seq ((ds (parse-c-type scanner))
+ (dc (parse-maybe-dotted-declarator ds))
+ (nil (commit))
+ (nil (class-item-dispatch sub-pset
+ ds
+ (car dc)
+ (cdr dc))))))
+ (and "class"
+ (parse-initializer-item sub-pset t
+ #'make-sod-class-initializer))
+ (parse-initializer-item sub-pset nil
+ #'make-sod-instance-initializer)))))
+
+ (parse (seq (#\{
+ (nil (skip-many ()
+ (seq ((sub-pset (parse-property-set scanner))
+ (nil (parse-raw-class-item sub-pset)))
+ (check-unused-properties sub-pset))))
+ (nil (error () #\})))
+ (unless (finalize-sod-class class)
+ (setf duff t))
+ (unless duff
+ (add-to-module *module* class))))))))
~mdw / sod / blobdiff