From 5145dd3aa0c02c9fc496d1432fc4410674206e1d Mon Sep 17 00:00:00 2001 From: Bryan Newbold Date: Mon, 20 Feb 2017 00:05:31 -0800 Subject: Import Upstream version 3a2 --- macscheme.init | 158 +++++++++++++++++++++++++++++++++++++++------------------ 1 file changed, 108 insertions(+), 50 deletions(-) (limited to 'macscheme.init') diff --git a/macscheme.init b/macscheme.init index 152d456..60ee387 100644 --- a/macscheme.init +++ b/macscheme.init @@ -35,31 +35,106 @@ ;;; 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. Suggestions for features are: +;@ +(define in-vicinity string-append) +;@ +(define (user-vicinity) + (case (software-type) + ((VMS) "[.]") + (else ""))) + +(define *load-pathname* #f) +;@ +(define vicinity:suffix? + (let ((suffi + (case (software-type) + ((AMIGA) '(#\: #\/)) + ((MACOS THINKC) '(#\:)) + ((MS-DOS WINDOWS ATARIST OS/2) '(#\\ #\/)) + ((NOSVE) '(#\: #\.)) + ((UNIX COHERENT PLAN9) '(#\/)) + ((VMS) '(#\: #\])) + (else + (slib:warn "require.scm" 'unknown 'software-type (software-type)) + "/")))) + (lambda (chr) (and (memv chr suffi) #t)))) +;@ +(define (pathname->vicinity pathname) + (let loop ((i (- (string-length pathname) 1))) + (cond ((negative? i) "") + ((vicinity:suffix? (string-ref pathname i)) + (substring pathname 0 (+ i 1))) + (else (loop (- i 1)))))) +(define (program-vicinity) + (if *load-pathname* + (pathname->vicinity *load-pathname*) + (slib:error 'program-vicinity " called; use slib:load to load"))) +;@ +(define sub-vicinity + (case (software-type) + ((VMS) (lambda + (vic name) + (let ((l (string-length vic))) + (if (or (zero? (string-length vic)) + (not (char=? #\] (string-ref vic (- l 1))))) + (string-append vic "[" name "]") + (string-append (substring vic 0 (- l 1)) + "." name "]"))))) + (else (let ((*vicinity-suffix* + (case (software-type) + ((NOSVE) ".") + ((MACOS THINKC) ":") + ((MS-DOS WINDOWS ATARIST OS/2) "\\") + ((UNIX COHERENT PLAN9 AMIGA) "/")))) + (lambda (vic name) + (string-append vic name *vicinity-suffix*)))))) +;@ +(define (make-vicinity ) ) +;@ +(define with-load-pathname + (let ((exchange + (lambda (new) + (let ((old *load-pathname*)) + (set! *load-pathname* new) + old)))) + (lambda (path thunk) + (let* ((old (exchange path)) + (val (thunk))) + (exchange old) + val)))) + +;;@ *FEATURES* is a list of symbols naming the (SLIB) features +;;; initially supported by this implementation. (define *features* '( source ;can load scheme source files - ;(slib:load-source "filename") + ;(SLIB:LOAD-SOURCE "filename") compiled ;can load compiled files - ;(slib:load-compiled "filename") + ;(SLIB:LOAD-COMPILED "filename") + vicinity + srfi-59 ;; Scheme report features + ;; R5RS-compliant implementations should provide all 9 features. -; r5rs ;conforms to -; eval ;R5RS two-argument eval -; values ;R5RS multiple values -; dynamic-wind ;R5RS dynamic-wind -; macro ;R5RS high level macros +;;; r5rs ;conforms to +;;; eval ;R5RS two-argument eval +;;; values ;R5RS multiple values +;;; dynamic-wind ;R5RS dynamic-wind +;;; macro ;R5RS high level macros delay ;has DELAY and FORCE multiarg-apply ;APPLY can take more than 2 args. -; char-ready? +;;; char-ready? + rev4-optional-procedures ;LIST-TAIL, STRING-COPY, + ;STRING-FILL!, and VECTOR-FILL! + + ;; These four features are optional in both R4RS and R5RS + + multiarg/and- ;/ and - can take more than 2 args. rationalize - rev4-optional-procedures ;LIST-TAIL, STRING->LIST, - ;LIST->STRING, STRING-COPY, - ;STRING-FILL!, LIST->VECTOR, - ;VECTOR->LIST, and VECTOR-FILL! +;;; transcript ;TRANSCRIPT-ON and TRANSCRIPT-OFF + with-file ;has WITH-INPUT-FROM-FILE and + ;WITH-OUTPUT-TO-FILE r4rs ;conforms to @@ -67,43 +142,39 @@ r3rs ;conforms to -; rev2-procedures ;SUBSTRING-MOVE-LEFT!, +;;; rev2-procedures ;SUBSTRING-MOVE-LEFT!, ;SUBSTRING-MOVE-RIGHT!, ;SUBSTRING-FILL!, ;STRING-NULL?, APPEND!, 1+, ;-1+, ?, >=? -; object-hash ;has OBJECT-HASH +;;; object-hash ;has OBJECT-HASH - multiarg/and- ;/ and - can take more than 2 args. - with-file ;has WITH-INPUT-FROM-FILE and - ;WITH-OUTPUT-TO-FILE -; transcript ;TRANSCRIPT-ON and TRANSCRIPT-OFF + full-continuation ;can return multiple times ieee-floating-point ;conforms to IEEE Standard 754-1985 ;IEEE Standard for Binary ;Floating-Point Arithmetic. - full-continuation ;can return multiple times ;; Other common features -; srfi ;srfi-0, COND-EXPAND finds all srfi-* -; sicp ;runs code from Structure and +;;; srfi ;srfi-0, COND-EXPAND finds all srfi-* +;;; sicp ;runs code from Structure and ;Interpretation of Computer ;Programs by Abelson and Sussman. -; defmacro ;has Common Lisp DEFMACRO -; record ;has user defined data structures +;;; defmacro ;has Common Lisp DEFMACRO +;;; record ;has user defined data structures string-port ;has CALL-WITH-INPUT-STRING and ;CALL-WITH-OUTPUT-STRING -; sort +;;; sort pretty-print -; object->string -; format ;Common-lisp output formatting -; trace ;has macros: TRACE and UNTRACE +;;; object->string +;;; format ;Common-lisp output formatting +;;; trace ;has macros: TRACE and UNTRACE compiler ;has (COMPILER) -; ed ;(ED) is editor -; system ;posix (system ) -; getenv ;posix (getenv ) -; program-arguments ;returns list of strings (argv) -; current-time ;returns time in seconds since 1/1/1970 +;;; ed ;(ED) is editor +;;; system ;posix (system ) +;;; getenv ;posix (getenv ) +;;; program-arguments ;returns list of strings (argv) +;;; current-time ;returns time in seconds since 1/1/1970 ;; Implementation Specific features @@ -237,18 +308,7 @@ (define (defmacro:load ) (slib:eval-load defmacro:eval)) - -(define (slib:eval-load evl) - (if (not (file-exists? )) - (set! (string-append (scheme-file-suffix)))) - (call-with-input-file - (lambda (port) - (let ((old-load-pathname *load-pathname*)) - (set! *load-pathname* ) - (do ((o (read port) (read port))) - ((eof-object? o)) - (evl o)) - (set! *load-pathname* old-load-pathname))))) +;; slib:eval-load definition moved to "require.scm" (define slib:warn (lambda args @@ -274,10 +334,8 @@ ;(define (-1+ n) (+ n -1)) ;(define 1- -1+) -(define in-vicinity string-append) - ;;; Define SLIB:EXIT to be the implementation procedure to exit or -;;; return if exitting not supported. +;;; return if exiting not supported. ; MacScheme does not return a value when it exits, ; so simply invoke system procedure exit with 0 args. (define slib:exit (lambda args (exit))) -- cgit v1.2.3