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-rw-r--r--t3.init49
1 files changed, 32 insertions, 17 deletions
diff --git a/t3.init b/t3.init
index 824d465..2b317b8 100644
--- a/t3.init
+++ b/t3.init
@@ -19,14 +19,12 @@
;;; (scheme-implementation-home-page) should return a (string) URI
;;; (Uniform Resource Identifier) for this scheme implementation's home
;;; page; or false if there isn't one.
-
(define (scheme-implementation-home-page)
"ftp://ftp.cs.indiana.edu:21/pub/scheme-repository/imp/t/README")
;;; (implementation-vicinity) should be defined to be the pathname of
;;; the directory where any auxillary files to your Scheme
;;; implementation reside. It is settable.
-
(define implementation-vicinity
(make-simple-switch 'implementation-vicinity
(lambda (x) (or (string? x) (false? x)))
@@ -35,7 +33,6 @@
;;; (library-vicinity) should be defined to be the pathname of the
;;; directory where files of Scheme library functions reside. It is settable.
-
(define library-vicinity
(make-simple-switch 'library-vicinity
(lambda (x) (or (string? x) (false? x)))
@@ -46,13 +43,11 @@
;;; (home-vicinity) should return the vicinity of the user's HOME
;;; directory, the directory which typically contains files which
;;; customize a computer environment for a user.
-
(define (home-vicinity) #f)
;;; *FEATURES* should be set to a list of symbols describing features
;;; of this implementation. See Template.scm for the list of feature
;;; names.
-
(define *features*
'(
source ;can load scheme source files
@@ -62,7 +57,7 @@
;; Scheme report features
-; rev5-report ;conforms to
+; r5rs ;conforms to
; eval ;R5RS two-argument eval
; values ;R5RS multiple values
; dynamic-wind ;R5RS dynamic-wind
@@ -76,11 +71,11 @@
;STRING-FILL!, LIST->VECTOR,
;VECTOR->LIST, and VECTOR-FILL!
-; rev4-report ;conforms to
+; r4rs ;conforms to
; ieee-p1178 ;conforms to
- rev3-report ;conforms to
+ r3rs ;conforms to
rev2-procedures ;SUBSTRING-MOVE-LEFT!,
;SUBSTRING-MOVE-RIGHT!,
@@ -91,7 +86,7 @@
multiarg/and- ;/ and - can take more than 2 args.
with-file ;has WITH-INPUT-FROM-FILE and
- ;WITH-OUTPUT-FROM-FILE
+ ;WITH-OUTPUT-TO-FILE
transcript ;TRANSCRIPT-ON and TRANSCRIPT-OFF
; ieee-floating-point ;conforms to IEEE Standard 754-1985
;IEEE Standard for Binary
@@ -132,14 +127,12 @@
; Modify substring as T's substring takes (start,count) instead of
; (start,end)
-
(set (syntax-table-entry (env-syntax-table scheme-env) 'require) '#f)
; Turn off the macro REQUIRE so that it can be rebound as a function
; later.
; extend <, >, <= and >= so that they take more than two arguments.
-
(define <
(let ((primitive< (*value standard-env '<)))
(labels ((v (lambda (a b . rest)
@@ -298,7 +291,7 @@
(let ((cep (current-error-port)))
(if (provided? 'trace) (print-call-stack cep))
(display "Warn: " cep)
- (for-each (lambda (x) (display x cep)) args))))
+ (for-each (lambda (x) (display #\ cep) (write x cep)) args))))
;;; define an error procedure for the library
(define (slib:error . args)
@@ -311,7 +304,6 @@
;;; Define these if your implementation's syntax can support it and if
;;; they are not already defined.
-
;(define (1+ n) (+ n 1))
(define (1- n) (+ n -1))
;(define (-1+ n) (+ n -1))
@@ -367,7 +359,6 @@
;;; FORCE-OUTPUT flushes any pending output on optional arg output port
;;; use this definition if your system doesn't have such a procedure.
;;; T already has it, but requires 1 argument.
-
(define force-output
(let ((t:force-output (*value standard-env 'force-output)))
(lambda x
@@ -383,6 +374,33 @@
(define (call-with-input-string string proc)
(with-input-from-string (variable string) (proc variable)))
+(define (make-exchanger obj)
+ (lambda (rep) (let ((old obj)) (set! obj rep) old)))
+(define (open-file filename modes)
+ (case modes
+ ((r rb) (open-input-file filename))
+ ((w wb) (open-output-file filename))
+ (else (slib:error 'open-file 'mode? modes))))
+(define (port? obj) (or (input-port? port) (output-port? port)))
+(define (call-with-open-ports . ports)
+ (define proc (car ports))
+ (cond ((procedure? proc) (set! ports (cdr ports)))
+ (else (set! ports (reverse ports))
+ (set! proc (car ports))
+ (set! ports (reverse (cdr ports)))))
+ (let ((ans (apply proc ports)))
+ (for-each close-port ports)
+ ans))
+(define (close-port port)
+ (cond ((input-port? port)
+ (close-input-port port)
+ (if (output-port? port) (close-output-port port)))
+ ((output-port? port) (close-output-port port))
+ (else (slib:error 'close-port 'port? port))))
+
+(define (browse-url url)
+ (slib:warn "define BROWSE-URL in t3.init"))
+
(define (string->number s . x)
(let ((base (if x (car x) 10))
(s (string-upcase s)))
@@ -454,17 +472,14 @@
;;; (SLIB:LOAD-SOURCE "foo") should load "foo.scm" or with whatever
;;; suffix all the module files in SLIB have. See feature 'SOURCE.
-
(define slib:load-source load)
;;; (SLIB:LOAD-COMPILED "foo") should load the file that was produced
;;; by compiling "foo.scm" if this implementation can compile files.
;;; See feature 'COMPILED.
-
(define slib:load-compiled load)
;;; At this point SLIB:LOAD must be able to load SLIB files.
-
(define slib:load slib:load-source)
(slib:load (in-vicinity (library-vicinity) "require") scheme-env)