diff options
Diffstat (limited to 't3.init')
| -rw-r--r-- | t3.init | 49 |
1 files changed, 32 insertions, 17 deletions
@@ -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) |