Re: enums

[Johan Rydberg <johan.rydberg@netinsight.se>]

Ben Elliston wrote:

> In other contexts, an enum value can be:
> 
>         (values "RESET" "BUSERR" "DPF" ..)
> 
> Does that work?

No, and here's the backtrace:

ERROR: In procedure caar:
ERROR: Wrong type argument in position 1: ()

Backtrace:
 0  (begin (apply display-error #f ...) (save-stack) ...)
 1* (if (= (length args) 5) (begin (apply display-error #f ...) (save-stack) ...))
 2* [#<procedure args> wrong-type-arg "caar" ...]
 3* [caar (() (prefix E_) (values "RESET" "BUSERR" ...))]
 4  (let ((arg #) (elm-name #)) (case elm-name (# #) ...) ...)
 5  (if (null? arg-list) nil ...)
 6  [#<procedure (arg-list)> (() (prefix E_) (values "RESET" "BUSERR" ...))]
 7  (let ((arg #) (elm-name #)) (case elm-name (# #) ...) ...)
 8  (if (null? arg-list) nil ...)
 9  [#<procedure (arg-list)> ((comment "exception vectors") () (prefix E_) ...)]
10  (let ((arg #) (elm-name #)) (case elm-name (# #) ...) ...)
11  (if (null? arg-list) nil ...)
12  [#<procedure (arg-list)> ((name e-exception) (comment "exception vectors") () ...)]
13* (letrec ((loop #)) (loop arg-list))
14  (let ((name nil) (comment "") (attrs nil) ...) (letrec (#) (loop arg-list)) ...)
15  [-enum-read "define-enum" (name e-exception) ...]
16* [apply #<procedure -enum-read (errtxt . arg-list)> ("define-enum" (name e-exception) (comment "exception vectors") ...)]
17  (let ((e #)) (current-enum-add! e) ...)
18  [define-enum (name e-exception) (comment "exception vectors") ...]
19  [apply #<procedure define-enum arg-list> ((name e-exception) (comment "exception vectors") () ...)]
20  (if (< (length #) (car num-args)) (reader-error (string-append "Incorrect number of arguments to " # ...) entry ...) ...)
21  (if (cdr num-args) (if (< # #) (reader-error # entry ...) ...) ...)
22  (let* ((handler #) (arg-spec #) (num-args #)) (if (cdr num-args) (if # # ...) ...))
23  (if command (let* (# # #) (if # # ...)) ...)
24* (let ((command #)) (if command (let* # #) ...))
25  [-reader-process-expanded-1 (define-enum (name e-exception) (comment "exception vectors") ...)]
26  (if (eq? (car entry) (quote begin)) (for-each -reader-process-expanded (cdr entry)) ...)
27  [-reader-process-expanded (define-enum (name e-exception) (comment "exception vectors") ...)]
28  (let ((expansion #)) (-reader-process-expanded expansion))
29* [reader-process (define-enum (name e-exception) (comment "exception vectors") ...)]
30  (begin (reader-process entry) (loop (read)))
    ...
31  (if (eof-object? entry) #t ...)
32  [#<procedure (entry)> (define-isa (name or32) (base-insn-bitsize 32) ...)]
33  (begin (reader-process entry) (loop (read)))
34  (if (eof-object? entry) #t ...)
35  [#<procedure (entry)> (define-arch (name or32) (comment "OpenRISC 1000") ...)]
36  (begin (reader-process entry) (loop (read)))
37  (if (eof-object? entry) #t ...)
38  [#<procedure (entry)> (include "simplify.inc")]
39* (letrec ((loop #)) (loop (read)))
40* [#<procedure ()>]
41  [lazy-catch #t #<procedure ()> ...]
    ...
42  (let* () (set! srcdir (find-srcdir #)) ...)
43* [cgen-opc ("./../cgen/cgen-opc.scm" "-s" "./../cgen" ...)]
44* [primitive-load "./../cgen/cgen-opc.scm"]

-- 
Johan Rydberg, Net Insight AB, Sweden, +46-8-685 04 00

$ ON F$ERROR("LANGUAGE","ENGLISH","IN_MESSAGE").GT.F$ERROR("NORMAL") -
             THEN EXCUSE/OBJECT=ME