(defun intern-c-type (class &rest initargs)
"If the CLASS and INITARGS have already been interned, then return the
existing object; otherwise make a new one."
- (let ((list (cons class initargs)))
+ (let ((list (cons (typecase class
+ ;; Canonify the class object; we'd prefer a name.
+ (standard-class (class-name class))
+ (t class))
+ (let ((alist nil) (plist initargs))
+ ;; Canonify the initargs. Arrange for them to be in
+ ;; ascending order by name. This is annoying because
+ ;; a plist isn't a readily sortable sequence.
+ (loop
+ (when (null plist) (return))
+ (let ((name (pop plist)) (value (pop plist)))
+ (push (cons name value) alist)))
+ (dolist (assoc (sort alist #'string> :key #'car))
+ (push (cdr assoc) plist)
+ (push (car assoc) plist))
+ plist))))
(or (gethash list *c-type-intern-map*)
(let ((new (apply #'make-instance class initargs)))
(setf (gethash new *c-type-intern-map*) t
(list ,@(mapcar #'expand-c-storage-specifier specifiers))))
;;;--------------------------------------------------------------------------
+;;; Some storage specifiers.
+
+(export 'alignas-storage-specifier)
+(defclass alignas-storage-specifier ()
+ ((alignment :initarg :alignment :reader spec-alignment)))
+
+(export 'alignas)
+(define-c-storage-specifier-syntax alignas (alignment)
+ `(make-instance 'alignas-storage-specifier :alignment ,alignment))
+
+(defmethod print-c-storage-specifier
+ (stream (spec alignas-storage-specifier) &optional colon atsign)
+ (declare (ignore colon atsign))
+ (format stream "~:@<~S ~_~S~:>" 'alignas (spec-alignment spec)))
+
+(defmethod pprint-c-storage-specifier
+ ((spec alignas-storage-specifier) stream)
+ (format stream "_Alignas(~A)" (spec-alignment spec)))
+
+;;;--------------------------------------------------------------------------
;;; Simple C types.
;; Class definition.
;; S-expression notation protocol.
-(defparameter *simple-type-map* (make-hash-table)
+(defparameter *simple-type-map* (make-hash-table :test #'equal)
"Hash table mapping strings of C syntax to symbolic names.")
(defmethod print-c-type (stream (type simple-c-type) &optional colon atsign)
(export 'define-simple-c-type)
(defmacro define-simple-c-type (names type &key export)
"Define each of NAMES to be a simple type called TYPE."
- (let ((names (if (listp names) names (list names))))
- `(progn
- (setf (gethash ,type *simple-type-map*) ',(car names))
- (defctype ,names ,type :export ,export)
- (define-c-type-syntax ,(car names) (&rest quals)
- `(make-simple-type ,',type (list ,@quals))))))
+ (let ((names (if (listp names) names (list names)))
+ (types (if (listp type) type (list type))))
+ (with-gensyms (type name)
+ `(progn
+ (dolist (,type ',types)
+ (setf (gethash ,type *simple-type-map*) ',(car names)))
+ (dolist (,name ',names)
+ (setf (gethash ,name *simple-type-map*) ,(car types)))
+ (defctype ,names ,(car types) :export ,export)
+ (define-c-type-syntax ,(car names) (&rest quals)
+ `(make-simple-type ,',(car types) (list ,@quals)))))))
+
+(export 'find-simple-c-type)
+(defun find-simple-c-type (name)
+ "Return the `simple-c-type' with the given NAME, or nil."
+ (aand (gethash name *simple-type-map*)
+ (make-simple-type (gethash it *simple-type-map*))))
;; Built-in C types.
(define-simple-c-type char "char" :export t)
(define-simple-c-type (unsigned-char uchar) "unsigned char" :export t)
(define-simple-c-type (signed-char schar) "signed char" :export t)
-(define-simple-c-type wchar-t "wchar-t" :export t)
+(define-simple-c-type wchar-t "wchar_t" :export t)
-(define-simple-c-type (int signed signed-int sint) "int" :export t)
+(define-simple-c-type (int signed signed-int sint)
+ ("int" "signed") :export t)
(define-simple-c-type (unsigned unsigned-int uint) "unsigned" :export t)
(define-simple-c-type (short signed-short short-int signed-short-int sshort)
(define-simple-c-type double "double" :export t)
(define-simple-c-type long-double "long double" :export t)
-(define-simple-c-type bool "_Bool" :export t)
+(define-simple-c-type bool ("_Bool" "bool") :export t)
(define-simple-c-type float-complex "float _Complex" :export t)
(define-simple-c-type double-complex "double _Complex" :export t)
(define-simple-c-type size-t "size_t" :export t)
(define-simple-c-type ptrdiff-t "ptrdiff_t" :export t)
+(macrolet ((define-cross-product-types (&rest pieces)
+ `(progn
+ ,@(mapcar (lambda (row)
+ (let* ((c-name (apply #'concatenate 'string row))
+ (lisp-name (intern
+ (frob-identifier c-name))))
+ `(define-simple-c-type ,lisp-name ,c-name
+ :export t)))
+ (apply #'cross-product pieces)))))
+ (define-cross-product-types ("int" "uint") ("" "_least" "_fast")
+ ("8" "16" "32" "64") "_t")
+ (define-cross-product-types ("int" "uint") ("ptr" "max") "_t"))
+
;;;--------------------------------------------------------------------------
;;; Tagged types (enums, structs and unions).
`(progn
(export '(,type ,kind ,constructor))
(defclass ,type (tagged-c-type) ()
- (:documentation ,(format nil "C ~a types." what)))
+ (:documentation ,(format nil "C ~A types." what)))
(defmethod c-tagged-type-kind ((type ,type))
',keyword)
(defmethod kind-c-tagged-type ((kind (eql ',keyword)))
(argument-type arg-b)))))
list-a list-b)))
+(defun fix-and-check-keyword-argument-list (list)
+ "Check the keyword argument LIST is valid; if so, fix it up and return it.
+
+ Check that the keyword arguments have distinct names. Fix the list up by
+ sorting it by keyword name."
+
+ (unless (every #'argumentp list)
+ (error "(INTERNAL) not an argument value"))
+
+ (let ((list (sort (copy-list list) #'string< :key #'argument-name)))
+ (do ((list (cdr list) (cdr list))
+ (this (car list) (car list))
+ (prev nil this))
+ ((endp list))
+ (when prev
+ (let ((this-name (argument-name this))
+ (prev-name (argument-name prev)))
+ (when (string= this-name prev-name)
+ (error "Duplicate keyword argument name `~A'" this-name)))))
+ list))
+
+(export 'merge-keyword-lists)
+(defun merge-keyword-lists (whatfn lists)
+ "Return the union of keyword argument lists.
+
+ The WHATFN is either nil or a designator for a function (see below).
+
+ The LISTS parameter consists of pairs (REPORTFN . ARGS), where REPORTFN is
+ either nil or a designator for a function (see below); and and ARGS is a
+ list of `argument' objects.
+
+ The resulting list contains exactly one argument for each distinct
+ argument name appearing in the input lists; this argument will contain the
+ default value corresponding to the name's earliest occurrence in the input
+ LISTS.
+
+ If the same name appears in multiple input lists with different types, a
+ continuable error is signalled.
+
+ The WHATFN function is given no arguments, and is expected to return a
+ file location (or other object convertible with `file-location'), and a
+ string (or other printable object) describing the site at which the
+ keyword argument lists are being merged or nil; a mismatch error will be
+ reported as being at the location returned by WHATFN, and the description
+ will be included in the error message. A nil WHATFN is equivalent to a
+ function which returns a nil location and description, though this is
+ considered poor practice.
+
+ The REPORTFN is given a single argument ARG, which is one of the
+ conflicting `argument' objects found in the REPORTFN's corresponding
+ argument list: the REPORTFN is expected to issue additional `info'
+ messages to help the user diagnose the problem. The (common) name of the
+ argument has already been reported. A nil REPORTFN is equivalent to one
+ which does nothing, though this is considered poor practice."
+
+ ;; The easy way through all of this is with a hash table mapping argument
+ ;; names to (WHAT . ARG) pairs.
+
+ (let ((argmap (make-hash-table :test #'equal)))
+
+ ;; Set up the table. When we find a duplicate, check that the types
+ ;; match.
+ (dolist (item lists)
+ (let ((reportfn (car item))
+ (args (cdr item)))
+ (dolist (arg args)
+ (let* ((name (argument-name arg))
+ (other-item (gethash name argmap)))
+ (if (null other-item)
+ (setf (gethash name argmap) (cons reportfn arg))
+ (let* ((type (argument-type arg))
+ (other-reportfn (car other-item))
+ (other (cdr other-item))
+ (other-type (argument-type other)))
+ (unless (c-type-equal-p type other-type)
+ (multiple-value-bind (floc desc)
+ (if whatfn (funcall whatfn) (values nil nil))
+ (cerror*-with-location floc
+ "Type mismatch for keyword ~
+ argument `~A'~@[ in ~A~]"
+ name desc)
+ (when reportfn
+ (funcall reportfn arg))
+ (when other-reportfn
+ (funcall other-reportfn other))))))))))
+
+ ;; Now it's just a matter of picking the arguments out again.
+ (let ((result nil))
+ (maphash (lambda (name item)
+ (declare (ignore name))
+ (push (cdr item) result))
+ argmap)
+ (fix-and-check-keyword-argument-list result))))
+
;; Class definition.
(export '(c-function-type c-function-arguments))
nil
arguments))))
+(export '(c-keyword-function-type c-function-keywords))
+(defclass c-keyword-function-type (c-function-type)
+ ((keywords :initarg :keywords :type list
+ :reader c-function-keywords))
+ (:documentation
+ "C function types for `functions' which take keyword arguments."))
+
+(defmethod shared-initialize :after
+ ((type c-keyword-function-type) slot-names &key (keywords nil keysp))
+ (declare (ignore slot-names))
+ (when keysp
+ (setf (slot-value type 'keywords)
+ (fix-and-check-keyword-argument-list keywords))))
+
;; Constructor function.
(export 'make-function-type)
(defun make-function-type (subtype arguments)
- "Return a new function type, returning SUBTYPE and accepting ARGUMENTS."
- (make-instance 'c-function-type :subtype subtype
- :arguments arguments))
+ "Return a new function type, returning SUBTYPE and accepting ARGUMENTS.
+
+ As a helper for dealing with the S-expression syntax for keyword
+ functions, if ARGUMENTS has the form (ARGS ... :keys KEYWORDS ...)' then
+ return a keyword function with arguments (ARGS ...) and keywords (KEYWORDS
+ ...)."
+ (let ((split (member :keys arguments)))
+ (if split
+ (make-instance 'c-keyword-function-type
+ :subtype subtype
+ :arguments (ldiff arguments split)
+ :keywords (cdr split))
+ (make-instance 'c-function-type
+ :subtype subtype
+ :arguments arguments))))
+
+(export 'make-keyword-function-type)
+(defun make-keyword-function-type (subtype arguments keywords)
+ "Return a new keyword-function type, returning SUBTYPE and accepting
+ ARGUMENTS and KEYWORDS."
+ (make-instance 'c-keyword-function-type :subtype subtype
+ :arguments arguments :keywords keywords))
;; Comparison protocol.
(argument-lists-equal-p (c-function-arguments type-a)
(c-function-arguments type-b))))
+(defmethod c-type-equal-p and
+ ((type-a c-keyword-function-type) (type-b c-keyword-function-type))
+ ;; Actually, there's nothing to check here. I'm happy as long as both
+ ;; functions notionally accept keyword arguments.
+ t)
+
;; C syntax output protocol.
+(export 'pprint-c-function-type)
+(defun pprint-c-function-type (return-type stream print-args print-kernel)
+ "Common top-level printing for function types.
+
+ Prints RETURN-TYPE (KERNEL(ARGS)), where RETURN-TYPE is the actual return
+ type, and ARGS and KERNEL are whatever is printed by the PRINT-ARGS and
+ PRINT-KERNEL functions.
+
+ The PRINT-KERNEL function is the standard such thing for the
+ `pprint-c-type' protocol; PRINT-ARGS accepts just an output stream."
+ (pprint-c-type return-type stream
+ (lambda (stream prio spacep)
+ (maybe-in-parens (stream (> prio 2))
+ (when spacep (c-type-space stream))
+ (funcall print-kernel stream 2 nil)
+ (pprint-indent :block 4 stream)
+ (pprint-newline :linear stream)
+ (pprint-logical-block
+ (stream nil :prefix "(" :suffix ")")
+ (funcall print-args stream))))))
+
+(export 'pprint-argument-list)
+(defun pprint-argument-list (args stream)
+ "Print an argument list.
+
+ The ARGS is a list of `argument' objects, optionally containing an
+ `:ellipsis' marker. The output is written to STREAM.
+
+ Returns non-nil if any arguments were actually printed."
+ (let ((anyp nil))
+ (pprint-logical-block (stream nil)
+ (dolist (arg args)
+ (if anyp
+ (format stream ", ~_")
+ (setf anyp t))
+ (etypecase arg
+ ((member :ellipsis)
+ (write-string "..." stream))
+ (argument
+ (pprint-logical-block (stream nil)
+ (pprint-c-type (argument-type arg) stream (argument-name arg))
+ (let ((default (argument-default arg)))
+ (when default
+ (format stream " = ~2I~_~A" default))))))))
+ anyp))
+
(let ((void-arglist (list (make-argument nil c-type-void))))
(defmethod pprint-c-type ((type c-function-type) stream kernel)
- (pprint-c-type (c-type-subtype type) stream
- (lambda (stream prio spacep)
- (maybe-in-parens (stream (> prio 2))
- (when spacep (c-type-space stream))
- (funcall kernel stream 2 nil)
- (pprint-indent :block 4 stream)
- (pprint-logical-block
- (stream nil :prefix "(" :suffix ")")
- (let ((firstp t))
- (dolist (arg (or (c-function-arguments type)
- void-arglist))
- (if firstp
- (setf firstp nil)
- (format stream ", ~_"))
- (if (eq arg :ellipsis)
- (write-string "..." stream)
- (pprint-c-type (argument-type arg)
- stream
- (argument-name arg)))))))))))
+ (let ((args (or (c-function-arguments type) void-arglist)))
+ (pprint-c-function-type (c-type-subtype type) stream
+ (lambda (stream)
+ (pprint-argument-list args stream))
+ kernel))))
+
+(defmethod pprint-c-type ((type c-keyword-function-type) stream kernel)
+ (let ((args (c-function-arguments type))
+ (keys (c-function-keywords type)))
+ (pprint-c-function-type (c-type-subtype type) stream
+ (lambda (stream)
+ (when (pprint-argument-list args stream)
+ (format stream ", ~_"))
+ (write-char #\? stream)
+ (pprint-argument-list keys stream))
+ kernel)))
;; S-expression notation protocol.
(stream (type c-function-type) &optional colon atsign)
(declare (ignore colon atsign))
(format stream "~:@<~
- FUN ~@_~:I~/sod:print-c-type/~
- ~{ ~_~:<~S ~@_~/sod:print-c-type/~:>~}~
+ FUN ~@_~:I~
+ ~/sod:print-c-type/~:[~; ~]~:*~_~
+ ~<~@{~:<~S ~@_~/sod:print-c-type/~:>~^ ~_~}~:>~
+ ~:[~2*~; ~_~S ~@_~<~@{~:<~S ~@_~/sod:print-c-type/~
+ ~@[ ~@_~S~]~:>~^ ~_~}~:>~]~
~:>"
(c-type-subtype type)
(mapcar (lambda (arg)
(if (eq arg :ellipsis) arg
(list (argument-name arg) (argument-type arg))))
- (c-function-arguments type))))
+ (c-function-arguments type))
+ (typep type 'c-keyword-function-type)
+ :keys
+ (and (typep type 'c-keyword-function-type)
+ (mapcar (lambda (arg)
+ (list (argument-name arg)
+ (argument-type arg)
+ (argument-default arg)))
+ (c-function-keywords type)))))
(export '(fun function () func fn))
(define-c-type-syntax fun (ret &rest args)
"Return the type of functions which returns RET and has arguments ARGS.
- The ARGS are a list of arguments of the form (NAME TYPE). The NAME can be
- NIL to indicate that no name was given.
+ The ARGS are a list of arguments of the form (NAME TYPE [DEFAULT]). The
+ NAME can be NIL to indicate that no name was given.
If an entry isn't a list, it's assumed to be the start of a Lisp
expression to compute the tail of the list; similarly, if the list is
`(make-function-type ,(expand-c-type-spec ret)
,(do ((args args (cdr args))
(list nil
- (cons `(make-argument ,(caar args)
- ,(expand-c-type-spec
- (cadar args)))
- list)))
- ((or (atom args) (atom (car args)))
+ (if (keywordp (car args))
+ (cons (car args) list)
+ (let* ((name (caar args))
+ (type (expand-c-type-spec
+ (cadar args)))
+ (default (and (cddar args)
+ (caddar args)))
+ (arg `(make-argument
+ ,name ,type ,default)))
+ (cons arg list)))))
+ ((or (atom args)
+ (and (atom (car args))
+ (not (keywordp (car args)))))
(cond ((and (null args) (null list)) `nil)
((null args) `(list ,@(nreverse list)))
- ((and (consp args)
- (eq (car args) :ellipsis))
- `(list ,@(nreverse list) :ellipsis))
((null list) `,args)
(t `(list* ,@(nreverse list) ,args)))))))
(c-type-alias fun function () func fn)
(mapcar (lambda (arg)
(if (eq arg :ellipsis) arg
(make-argument (commentify-argument-name (argument-name arg))
- (argument-type arg))))
+ (argument-type arg)
+ (argument-default arg))))
arguments))
(export 'commentify-function-type)
(commentify-argument-names
(c-function-arguments type))))
+(export 'reify-variable-argument-tail)
+(defun reify-variable-argument-tail (arguments)
+ "Replace any `:ellipsis' item in ARGUMENTS with a `va_list' argument.
+
+ The argument's name is taken from the variable `*sod-ap*'."
+ (substitute (make-argument *sod-ap* c-type-va-list) :ellipsis arguments))
+
;;;----- That's all, folks --------------------------------------------------
~mdw / sod / blobdiff