(defparameter *sod-tmp-val*
(make-instance 'temporary-name :tag "sod__t"))
+(export '*null-pointer*)
+(defparameter *null-pointer* "NULL")
+
;;;--------------------------------------------------------------------------
;;; Instructions.
(pprint-indent :block 2 stream)
(pprint-newline :linear stream)
(princ child stream)
- (pprint-indent :block 0 stream)
- (case morep
- (:space
- (write-char #\space stream)
- (pprint-newline :linear stream))
- ((t)
- (pprint-newline :mandatory stream)))))))
+ (pprint-indent :block 0 stream))
+ (case morep
+ (:space
+ (write-char #\space stream)
+ (pprint-newline :linear stream))
+ ((t)
+ (pprint-newline :mandatory stream))))))
(export 'format-compound-statement)
(defmacro format-compound-statement
`(format-compound-statement* ,stream ,child ,morep
(lambda (,stream) ,@body)))
+(export 'format-banner-comment)
+(defun format-banner-comment (stream control &rest args)
+ (format stream "~@</~@<* ~@;~?~:>~_ */~:>" control args))
+
;; Important instruction classes.
;; HACK: Some of the slot names we'd like to use are external symbols in our
;; prevent them from leaking.
(definst var (stream :export t) (name #1=#:type &optional init)
- (pprint-c-type #1# stream name)
- (when init
- (format stream " = ~A" init))
- (write-char #\; stream))
+ (pprint-logical-block (stream nil)
+ (pprint-c-type #1# stream name)
+ (when init
+ (format stream " = ~2I~_~A" init))
+ (write-char #\; stream)))
-(definst function (stream :export t) (name #1=#:type body)
+(definst function (stream :export t)
+ (name #1=#:type body &optional #2=#:banner &rest banner-args)
(pprint-logical-block (stream nil)
+ (when #2#
+ (apply #'format-banner-comment stream #2# banner-args)
+ (pprint-newline :mandatory stream))
(princ "static " stream)
(pprint-c-type #1# stream name)
(format stream "~:@_~A~:@_~:@_" body)))
(definst expr (stream :export t) (#1=#:expr)
(format stream "~A;" #1#))
(definst set (stream :export t) (var #1=#:expr)
- (format stream "~@<~A = ~@_~2I~A;~:>" var #1#))
+ (format stream "~@<~A = ~2I~_~A;~:>" var #1#))
(definst update (stream :export t) (var op #1=#:expr)
- (format stream "~@<~A ~A= ~@_~2I~A;~:>" var op #1#))
+ (format stream "~@<~A ~A= ~2I~_~A;~:>" var op #1#))
;; Special kinds of expressions.
(definst call (stream :export t) (#1=#:func &rest args)
- (format stream "~A(~@<~{~A~^, ~_~}~:>)" #1# args))
+ (format stream "~@<~A~4I~_(~@<~{~A~^, ~_~}~:>)~:>" #1# args))
+(definst cond (stream :export t) (#1=#:cond conseq alt)
+ (format stream "~@<~A ~2I~@_~@<? ~A ~_: ~A~:>~:>" #1# conseq alt))
;; Simple statements.
(definst return (stream :export t) (#1=#:expr)
;; Compound statements.
+(defvar *first-statement-p* t
+ "True if this is the first statement in a block.
+
+ This is used to communicate between `block-inst' and `banner-inst' so that
+ they get the formatting right between them.")
+
+(definst banner (stream :export t) (control &rest args)
+ (pprint-logical-block (stream nil)
+ (unless *first-statement-p* (pprint-newline :mandatory stream))
+ (apply #'format-banner-comment stream control args)))
+
+(export 'emit-banner)
+(defun emit-banner (codegen control &rest args)
+ (emit-inst codegen (apply #'make-banner-inst control args)))
+
(definst block (stream :export t) (decls body)
- (format stream "{~:@_~@< ~2I~@[~{~A~:@_~}~:@_~]~{~A~^~:@_~}~:>~:@_}"
- decls body))
+ (write-char #\{ stream)
+ (pprint-newline :mandatory stream)
+ (pprint-logical-block (stream nil)
+ (let ((newlinep nil))
+ (flet ((newline ()
+ (if newlinep
+ (pprint-newline :mandatory stream)
+ (setf newlinep t))))
+ (pprint-indent :block 2 stream)
+ (write-string " " stream)
+ (when decls
+ (dolist (decl decls)
+ (newline)
+ (write decl :stream stream))
+ (when body (newline)))
+ (let ((*first-statement-p* t))
+ (dolist (inst body)
+ (newline)
+ (write inst :stream stream)
+ (setf *first-statement-p* nil))))))
+ (pprint-newline :mandatory stream)
+ (write-char #\} stream))
(definst if (stream :export t) (#1=#:cond conseq &optional alt)
- (format-compound-statement (stream conseq alt)
- (format stream "if (~A)" #1#))
- (when alt
- (format-compound-statement (stream alt)
- (write-string "else" stream))))
+ (let ((stmt "if"))
+ (loop (format-compound-statement (stream conseq (if alt t nil))
+ (format stream "~A (~A)" stmt #1#))
+ (typecase alt
+ (null (return))
+ (if-inst (setf stmt "else if"
+ #1# (inst-cond alt)
+ conseq (inst-conseq alt)
+ alt (inst-alt alt)))
+ (t (format-compound-statement (stream alt)
+ (format stream "else"))
+ (return))))))
(definst while (stream :export t) (#1=#:cond body)
(format-compound-statement (stream body)
(write-string "do" stream))
(format stream "while (~A);" #1#))
+(definst for (stream :export t) (init #1=#:cond update body)
+ (format-compound-statement (stream body)
+ (format stream "for (~@<~@[~A~];~@[ ~_~A~];~@[ ~_~A~]~:>)"
+ init #1# update)))
+
;;;--------------------------------------------------------------------------
;;; Code generation.
cleanup automatically."))
(export 'codegen-build-function)
-(defun codegen-build-function (codegen name type vars insts)
+(defun codegen-build-function
+ (codegen name type vars insts &optional banner &rest banner-args)
"Build a function and add it to CODEGEN's list.
Returns the function's name."
(codegen-add-function codegen
- (make-function-inst name type
- (make-block-inst vars insts)))
+ (apply #'make-function-inst name type
+ (make-block-inst vars insts)
+ banner banner-args))
name)
(export 'codegen-pop-block)
(make-block-inst vars insts))))
(export 'codegen-pop-function)
-(defgeneric codegen-pop-function (codegen name type)
+(defgeneric codegen-pop-function
+ (codegen name type &optional banner &rest banner-args)
(:documentation
"Makes a function out of the completed code in CODEGEN.
The NAME can be any object you like. The TYPE should be a function type
object which includes argument names. The return value is the NAME.")
- (:method (codegen name type)
+ (:method (codegen name type &optional banner &rest banner-args)
(multiple-value-bind (vars insts) (codegen-pop codegen)
- (codegen-build-function codegen name type vars insts))))
+ (apply #'codegen-build-function codegen name type vars insts
+ banner banner-args))))
(export 'with-temporary-var)
(defmacro with-temporary-var ((codegen var type) &body body)
~mdw / sod / blobdiff