#!/bin/bash
# -*- wisp -*-
exec guile -L . --language=wisp -s "$0" "$@"
; !#
;; Scheme-only implementation of a wisp-preprocessor which output a
;; scheme code tree to feed to a scheme interpreter instead of a
;; preprocessed file.
;; Plan:
;; read reads the first expression from a string. It ignores comments,
;; so we have to treat these specially. Our wisp-reader only needs to
;; worry about whitespace.
;;
;; So we can skip all the string and bracket linebreak escaping and
;; directly create a list of codelines with indentation. For this we
;; then simply reuse the appropriate function from the generic wisp
;; preprocessor.
;; Copyright (C) Arne Babenhauserheide (2014--2015). All Rights Reserved.
;; Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
;;
;; The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
;;
;; THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
define-module : wisp-scheme
. #:export (wisp-scheme-read-chunk wisp-scheme-read-all
wisp-scheme-read-file-chunk wisp-scheme-read-file
wisp-scheme-read-string)
; use curly-infix by default
read-enable 'curly-infix
use-modules
srfi srfi-1
srfi srfi-11 ; for let-values
ice-9 rw ; for write-string/partial
ice-9 match
;; Helper functions for the indent-and-symbols data structure: '((indent token token ...) ...)
define : line-indent line
car line
define : line-real-indent line
. "Get the indentation without the comment-marker for unindented lines (-1 is treated as 0)."
let : : indent : line-indent line
if : = -1 indent
. 0
. indent
define : line-code line
let : : code : cdr line
; propagate source properties
when : not : null? code
set-source-properties! code : source-properties line
. code
; literal values I need
define readcolon
string->symbol ":"
define wisp-uuid "e749c73d-c826-47e2-a798-c16c13cb89dd"
; define an intermediate dot replacement with UUID to avoid clashes.
define repr-dot ; .
string->symbol : string-append "REPR-DOT-" wisp-uuid
; allow using reader additions as the first element on a line to prefix the list
define repr-quote ; '
string->symbol : string-append "REPR-QUOTE-" wisp-uuid
define repr-unquote ; ,
string->symbol : string-append "REPR-UNQUOTE-" wisp-uuid
define repr-quasiquote ; `
string->symbol : string-append "REPR-QUASIQUOTE-" wisp-uuid
define repr-unquote-splicing ; ,@
string->symbol : string-append "REPR-UNQUOTESPLICING-" wisp-uuid
define repr-syntax ; #'
string->symbol : string-append "REPR-SYNTAX-" wisp-uuid
define repr-unsyntax ; #,
string->symbol : string-append "REPR-UNSYNTAX-" wisp-uuid
define repr-quasisyntax ; #`
string->symbol : string-append "REPR-QUASISYNTAX-" wisp-uuid
define repr-unsyntax-splicing ; #,@
string->symbol : string-append "REPR-UNSYNTAXSPLICING-" wisp-uuid
; TODO: wrap the reader to return the repr of the syntax reader
; additions
define : match-charlist-to-repr charlist
let
: chlist : reverse charlist
cond
: equal? chlist : list #\.
. repr-dot
: equal? chlist : list #\'
. repr-quote
: equal? chlist : list #\,
. repr-unquote
: equal? chlist : list #\`
. repr-quasiquote
: equal? chlist : list #\, #\@
. repr-unquote-splicing
: equal? chlist : list #\# #\'
. repr-syntax
: equal? chlist : list #\# #\,
. repr-unsyntax
: equal? chlist : list #\# #\`
. repr-quasisyntax
: equal? chlist : list #\# #\, #\@
. repr-unsyntax-splicing
else
. #f
define : wisp-read port
. "wrap read to catch list prefixes."
let : : prefix-maxlen 4
let longpeek
: peeked '()
repr-symbol #f
cond
: or (< prefix-maxlen (length peeked)) (eof-object? (peek-char port)) (equal? #\space (peek-char port)) (equal? #\newline (peek-char port))
if repr-symbol ; found a special symbol, return it.
; TODO: Somehow store source-properties. The commented-out code below does not work.
; catch #t
; lambda ()
; write : source-properties symbol-or-symbols
; set-source-property! symbol-or-symbols 'filename : port-filename port
; set-source-property! symbol-or-symbols 'line : 1+ : port-line port
; set-source-property! symbol-or-symbols 'column : port-column port
; write : source-properties symbol-or-symbols
; lambda : key . arguments
; . #f
. repr-symbol
let unpeek
: remaining peeked
cond
: equal? '() remaining
read port ; let read to the work
else
unread-char (car remaining) port
unpeek : cdr remaining
else
let*
: next-char : read-char port
peeked : cons next-char peeked
longpeek
. peeked
match-charlist-to-repr peeked
define : line-continues? line
equal? repr-dot : car : line-code line
define : line-only-colon? line
and
equal? ":" : car : line-code line
null? : cdr : line-code line
define : line-empty-code? line
null? : line-code line
define : line-empty? line
and
; if indent is -1, we stripped a comment, so the line was not really empty.
= 0 : line-indent line
line-empty-code? line
define : line-strip-continuation line
if : line-continues? line
append
list
line-indent line
cdr : line-code line
. line
define : line-strip-indentation-marker line
. "Strip the indentation markers from the beginning of the line"
cdr line
define : indent-level-reduction indentation-levels level select-fun
. "Reduce the INDENTATION-LEVELS to the given LEVEL and return the value selected by SELECT-FUN"
let loop
: newlevels indentation-levels
diff 0
cond
: = level : car newlevels
select-fun : list diff indentation-levels
: < level : car newlevels
loop
cdr newlevels
1+ diff
else
throw 'wisp-syntax-error "Level ~A not found in the indentation-levels ~A."
define : indent-level-difference indentation-levels level
. "Find how many indentation levels need to be popped off to find the given level."
indent-level-reduction indentation-levels level
lambda : x ; get the count
car x
define : indent-reduce-to-level indentation-levels level
. "Find how many indentation levels need to be popped off to find the given level."
indent-level-reduction indentation-levels level
lambda : x ; get the levels
car : cdr x
define : wisp-scheme-read-chunk-lines port
let loop
: indent-and-symbols : list ; '((5 "(foobar)" "\"yobble\"")(3 "#t"))
inindent #t
inunderscoreindent : equal? #\_ : peek-char port
incomment #f
currentindent 0
currentsymbols '()
emptylines 0
cond
: >= emptylines 2 ; the chunk end has to be checked
; before we look for new chars in the
; port to make execution in the REPL
; after two empty lines work
; (otherwise it shows one more line).
. indent-and-symbols
else
let : : next-char : peek-char port
cond
: eof-object? next-char
append indent-and-symbols : list : append (list currentindent) currentsymbols
: and inindent (zero? currentindent) (not incomment) (not (null? indent-and-symbols)) (not inunderscoreindent) (not (or (equal? #\space next-char) (equal? #\newline next-char) (equal? (string-ref ";" 0) next-char)))
append indent-and-symbols ; top-level form ends chunk
: and inindent : equal? #\space next-char
read-char port ; remove char
loop
. indent-and-symbols
. #t ; inindent
. #f ; inunderscoreindent
. #f ; incomment
1+ currentindent
. currentsymbols
. emptylines
: and inunderscoreindent : equal? #\_ next-char
read-char port ; remove char
loop
. indent-and-symbols
. #t ; inindent
. #t ; inunderscoreindent
. #f ; incomment
1+ currentindent
. currentsymbols
. emptylines
; any char but whitespace *after* underscoreindent is
; an error. This is stricter than the current wisp
; syntax definition. TODO: Fix the definition. Better
; start too strict. FIXME: breaks on lines with only
; underscores which should empty lines.
: and inunderscoreindent : and (not (equal? #\space next-char)) (not (equal? #\newline next-char))
throw 'wisp-syntax-error "initial underscores without following whitespace at beginning of the line after" : last indent-and-symbols
: equal? #\newline next-char
read-char port ; remove the newline
; The following two lines would break the REPL by requiring one char too many.
; if : and (equal? #\newline next-char) : equal? #\return : peek-char port
; read-char port ; remove a full \n\r. Damn special cases...
let* ; distinguish pure whitespace lines and lines
; with comment by giving the former zero
; indent. Lines with a comment at zero indent
; get indent -1 for the same reason - meaning
; not actually empty.
:
indent
cond
incomment
if : = 0 currentindent ; specialcase
. -1
. currentindent
: not : null? currentsymbols ; pure whitespace
. currentindent
else
. 0
parsedline : append (list indent) currentsymbols
emptylines
if : not : line-empty? parsedline
. 0
1+ emptylines
when : not : = 0 : length parsedline
; set the source properties to parsedline so we can try to add them later.
set-source-property! parsedline 'filename : port-filename port
set-source-property! parsedline 'line : port-line port
; TODO: If the line is empty. Either do it here and do not add it, just
; increment the empty line counter, or strip it later. Replace indent
; -1 by indent 0 afterwards.
loop
append indent-and-symbols : list parsedline
. #t ; inindent
if : <= 2 emptylines
. #f ; chunk ends here
equal? #\_ : peek-char port ; are we in underscore indent?
. #f ; incomment
. 0
. '()
. emptylines
: equal? #t incomment
read-char port ; remove one comment character
loop
. indent-and-symbols
. #f ; inindent
. #f ; inunderscoreindent
. #t ; incomment
. currentindent
. currentsymbols
. emptylines
: or (equal? #\space next-char) (equal? #\tab next-char) (equal? #\return next-char) ; remove whitespace when not in indent
read-char port ; remove char
loop
. indent-and-symbols
. #f ; inindent
. #f ; inunderscoreindent
. #f ; incomment
. currentindent
. currentsymbols
. emptylines
; | cludge to appease the former wisp parser
; | which had a problem with the literal comment
; v char.
: equal? (string-ref ";" 0) next-char
loop
. indent-and-symbols
. #f ; inindent
. #f ; inunderscoreindent
. #t ; incomment
. currentindent
. currentsymbols
. emptylines
else ; use the reader
loop
. indent-and-symbols
. #f ; inindent
. #f ; inunderscoreindent
. #f ; incomment
. currentindent
; this also takes care of the hashbang and leading comments.
; TODO: If used from Guile, activate curly infix via read-options.
append currentsymbols : list : wisp-read port
. emptylines
define : line-code-replace-inline-colons line
. "Replace inline colons by opening parens which close at the end of the line"
; format #t "replace inline colons for line ~A\n" line
let loop
: processed '()
unprocessed line
cond
: null? unprocessed
; format #t "inline-colons processed line: ~A\n" processed
. processed
: equal? readcolon : car unprocessed
loop
; FIXME: This should turn unprocessed into a list.
append processed
list : loop '() (cdr unprocessed)
. '()
else
loop
append processed
list : car unprocessed
cdr unprocessed
define : line-replace-inline-colons line
cons
line-indent line
line-code-replace-inline-colons : line-code line
define : line-strip-lone-colon line
. "A line consisting only of a colon is just a marked indentation level. We need to kill the colon before replacing inline colons."
if
equal?
line-code line
list readcolon
list : line-indent line
. line
define : line-finalize line
. "Process all wisp-specific information in a line and strip it"
let
:
l
line-code-replace-inline-colons
line-strip-indentation-marker
line-strip-lone-colon
line-strip-continuation line
when : not : null? : source-properties line
catch #t
lambda ()
set-source-properties! l : source-properties line
lambda : key . arguments
. #f
. l
define : wisp-add-source-properties-from source target
. "Copy the source properties from source into the target and return the target."
catch #t
lambda ()
set-source-properties! target : source-properties source
lambda : key . arguments
. #f
. target
define : wisp-propagate-source-properties code
. "Propagate the source properties from the sourrounding list into every part of the code."
let loop
: processed '()
unprocessed code
cond
: and (null? processed) (not (pair? unprocessed)) (not (list? unprocessed))
. unprocessed
: and (pair? unprocessed) (not (list? unprocessed))
cons
wisp-propagate-source-properties (car unprocessed)
wisp-propagate-source-properties (cdr unprocessed)
: null? unprocessed
. processed
else
let : : line : car unprocessed
if : null? : source-properties unprocessed
wisp-add-source-properties-from line unprocessed
wisp-add-source-properties-from unprocessed line
loop
append processed : list : wisp-propagate-source-properties line
cdr unprocessed
define : wisp-scheme-indentation-to-parens lines
. "Add parentheses to lines and remove the indentation markers"
; FIXME: Find new algorithm which mostly uses current-line
; and the indentation-levels for tracking. The try I have in
; here right now is wrong.
when
and
not : null? lines
not : line-empty-code? : car lines
not : = 0 : line-real-indent : car lines ; -1 is a line with a comment
throw 'wisp-syntax-error
format #f "The first symbol in a chunk must start at zero indentation. Indentation and line: ~A"
car lines
let loop
: processed '()
unprocessed lines
indentation-levels '(0)
let*
:
current-line
if : <= 1 : length unprocessed
car unprocessed
list 0 ; empty code
next-line
if : <= 2 : length unprocessed
car : cdr unprocessed
list 0 ; empty code
current-indentation
car indentation-levels
current-line-indentation : line-real-indent current-line
; format #t "processed: ~A\ncurrent-line: ~A\nnext-line: ~A\nunprocessed: ~A\nindentation-levels: ~A\ncurrent-indentation: ~A\n\n"
; . processed current-line next-line unprocessed indentation-levels current-indentation
cond
; the real end: this is reported to the outside world.
: and (null? unprocessed) (not (null? indentation-levels)) (null? (cdr indentation-levels))
; display "done\n"
; reverse the processed lines, because I use cons.
. processed
; the recursion end-condition
: and (null? unprocessed)
; display "last step\n"
; this is the last step. Nothing more to do except
; for rolling up the indentation levels. return the
; new processed and unprocessed lists: this is a
; side-recursion
values processed unprocessed
: null? indentation-levels
; display "indentation-levels null\n"
throw 'wisp-programming-error "The indentation-levels are null but the current-line is null: Something killed the indentation-levels."
else ; now we come to the line-comparisons and indentation-counting.
cond
: line-empty-code? current-line
; display "current-line empty\n"
; We cannot process indentation without
; code. Just switch to the next line. This should
; only happen at the start of the recursion.
; TODO: Somehow preserve the line-numbers.
loop
. processed
cdr unprocessed
. indentation-levels
: and (line-empty-code? next-line) : <= 2 : length unprocessed
; display "next-line empty\n"
; TODO: Somehow preserve the line-numbers.
; take out the next-line from unprocessed.
loop
. processed
cons current-line
cdr : cdr unprocessed
. indentation-levels
: > current-indentation current-line-indentation
; display "current-indent > next-line\n"
; this just steps back one level via the side-recursion.
values processed unprocessed
: = current-indentation current-line-indentation
; display "current-indent = next-line\n"
let
: line : line-finalize current-line
next-line-indentation : line-real-indent next-line
cond
: >= current-line-indentation next-line-indentation
; simple recursiive step to the next line
; display "current-line-indent >= next-line-indent\n"
loop
append processed
if : line-continues? current-line
. line
wisp-add-source-properties-from line : list line
cdr unprocessed ; recursion here
. indentation-levels
: < current-line-indentation next-line-indentation
; display "current-line-indent < next-line-indent\n"
; format #t "line: ~A\n" line
; side-recursion via a sublist
let-values
:
: sub-processed sub-unprocessed
loop
. line
cdr unprocessed ; recursion here
. indentation-levels
; format #t "side-recursion:\n sub-processed: ~A\n processed: ~A\n\n" sub-processed processed
loop
append processed : list sub-processed
. sub-unprocessed ; simply use the recursion from the sub-recursion
. indentation-levels
: < current-indentation current-line-indentation
; display "current-indent < next-line\n"
loop
. processed
. unprocessed
cons ; recursion via the indentation-levels
. current-line-indentation
. indentation-levels
else
throw 'wisp-not-implemented
format #f "Need to implement further line comparison: current: ~A, next: ~A, processed: ~A."
. current-line next-line processed
define : wisp-scheme-replace-inline-colons lines
. "Replace inline colons by opening parens which close at the end of the line"
let loop
: processed '()
unprocessed lines
if : null? unprocessed
. processed
loop
append processed : list : line-replace-inline-colons : car unprocessed
cdr unprocessed
define : wisp-scheme-strip-indentation-markers lines
. "Strip the indentation markers from the beginning of the lines"
let loop
: processed '()
unprocessed lines
if : null? unprocessed
. processed
loop
append processed : cdr : car unprocessed
cdr unprocessed
define : wisp-unescape-underscore-and-colon code
. "replace \\_ and \\: by _ and :"
match code
: a ...
map wisp-unescape-underscore-and-colon a
'\_
. '_
'\:
. ':
a
. a
define : wisp-replace-empty-eof code
. "replace ((#<eof>)) by ()"
; FIXME: Actually this is a hack which fixes a bug when the
; parser hits files with only hashbang and comments.
if : and (not (null? code)) (pair? (car code)) (eof-object? (car (car code))) (null? (cdr code)) (null? (cdr (car code)))
list
. code
define : wisp-replace-paren-quotation-repr code
. "Replace lists starting with a quotation symbol by
quoted lists."
match code
: 'REPR-QUOTE-e749c73d-c826-47e2-a798-c16c13cb89dd a ...
list 'quote : map wisp-replace-paren-quotation-repr a
: a ... 'REPR-QUOTE-e749c73d-c826-47e2-a798-c16c13cb89dd b ; this is the quoted empty list
append
map wisp-replace-paren-quotation-repr a
list : list 'quote : map wisp-replace-paren-quotation-repr b
: 'REPR-UNQUOTE-e749c73d-c826-47e2-a798-c16c13cb89dd a ...
list 'unquote : map wisp-replace-paren-quotation-repr a
: a ... 'REPR-UNQUOTE-e749c73d-c826-47e2-a798-c16c13cb89dd b
append
map wisp-replace-paren-quotation-repr a
list : list 'unquote : map wisp-replace-paren-quotation-repr b
: 'REPR-QUASIQUOTE-e749c73d-c826-47e2-a798-c16c13cb89dd a ...
list 'quasiquote : map wisp-replace-paren-quotation-repr a
: a ... 'REPR-QUASIQUOTE-e749c73d-c826-47e2-a798-c16c13cb89dd b ; this is the quoted empty list
append
map wisp-replace-paren-quotation-repr a
list : list 'quasiquote : map wisp-replace-paren-quotation-repr b
: 'REPR-UNQUOTESPLICING-e749c73d-c826-47e2-a798-c16c13cb89dd a ...
list 'unquote-splicing : map wisp-replace-paren-quotation-repr a
: 'REPR-SYNTAX-e749c73d-c826-47e2-a798-c16c13cb89dd a ...
list 'syntax : map wisp-replace-paren-quotation-repr a
: 'REPR-UNSYNTAX-e749c73d-c826-47e2-a798-c16c13cb89dd a ...
list 'unsyntax : map wisp-replace-paren-quotation-repr a
: 'REPR-QUASISYNTAX-e749c73d-c826-47e2-a798-c16c13cb89dd a ...
list 'quasisyntax : map wisp-replace-paren-quotation-repr a
: 'REPR-UNSYNTAXSPLICING-e749c73d-c826-47e2-a798-c16c13cb89dd a ...
list 'unsyntax-splicing : map wisp-replace-paren-quotation-repr a
: a ...
map wisp-replace-paren-quotation-repr a
a
. a
define : wisp-make-improper code
. "Turn (a #{.}# b) into the correct (a . b).
read called on a single dot creates a variable named #{.}# (|.|
in r7rs). Due to parsing the indentation before the list
structure is known, the reader cannot create improper lists
when it reads a dot. So we have to take another pass over the
code to recreate the improper lists.
Match is awesome!"
let
:
improper
match code
: a ... b 'REPR-DOT-e749c73d-c826-47e2-a798-c16c13cb89dd c
append (map wisp-make-improper a)
cons (wisp-make-improper b) (wisp-make-improper c)
: a ...
map wisp-make-improper a
a
. a
define : syntax-error li msg
throw 'wisp-syntax-error (format #f "incorrect dot-syntax #{.}# in code: ~A: ~A" msg li)
if #t
. improper
let check
: tocheck improper
match tocheck
; lists with only one member
: 'REPR-DOT-e749c73d-c826-47e2-a798-c16c13cb89dd
syntax-error tocheck "list with the period as only member"
; list with remaining dot.
: a ...
if : and (member repr-dot a)
syntax-error tocheck "leftover period in list"
map check a
; simple pair - this and the next do not work when parsed from wisp-scheme itself. Why?
: 'REPR-DOT-e749c73d-c826-47e2-a798-c16c13cb89dd . c
syntax-error tocheck "dot as first element in already improper pair"
; simple pair, other way round
: a . 'REPR-DOT-e749c73d-c826-47e2-a798-c16c13cb89dd
syntax-error tocheck "dot as last element in already improper pair"
; more complex pairs
: ? pair? a
let
: head : drop-right a 1
tail : last-pair a
cond
: equal? repr-dot : car tail
syntax-error tocheck "equal? repr-dot : car tail"
: equal? repr-dot : cdr tail
syntax-error tocheck "equal? repr-dot : cdr tail"
: member repr-dot head
syntax-error tocheck "member repr-dot head"
else
. a
a
. a
define : wisp-scheme-read-chunk port
. "Read and parse one chunk of wisp-code"
let : : lines : wisp-scheme-read-chunk-lines port
wisp-make-improper
wisp-replace-empty-eof
wisp-unescape-underscore-and-colon
wisp-replace-paren-quotation-repr
wisp-propagate-source-properties
wisp-scheme-indentation-to-parens lines
define : wisp-scheme-read-all port
. "Read all chunks from the given port"
let loop
: tokens '()
cond
: eof-object? : peek-char port
. tokens
else
loop
append tokens : wisp-scheme-read-chunk port
define : wisp-scheme-read-file path
call-with-input-file path wisp-scheme-read-all
define : wisp-scheme-read-file-chunk path
call-with-input-file path wisp-scheme-read-chunk
define : wisp-scheme-read-string str
call-with-input-string str wisp-scheme-read-all
define : wisp-scheme-read-string-chunk str
call-with-input-string str wisp-scheme-read-chunk
;;;; Test special syntax
; ;; quote the list
; write
; wisp-scheme-read-string "moo
; foo
; ' bar
; baz waz"
; newline
; ;; quote the symbol - in wisp, whitespace after quote is not allowed!
; write
; wisp-scheme-read-string "moo
; foo
; 'bar
; baz waz"
; newline
; ; ;; quote the list with colon
; write
; wisp-scheme-read-string "moo : ' foo
; foo
; ' bar bah
; baz waz"
; newline
; ; ;; syntax the list
; write
; wisp-scheme-read-string "moo : #' foo
; foo
; #' bar bah
; baz waz"
; newline
;
;;;; Test improper lists
;;;; Good cases
; write
; wisp-scheme-read-string "foo . bar"
; newline
; write
; wisp-scheme-read-string "foo .
; . bar"
; newline
; write
; wisp-scheme-read-string "foo
; . . bar"
; newline
; write
; wisp-scheme-read-string "moo
; foo
; . . bar
; baz waz"
; newline
;;;; Syntax Error cases
; write
; wisp-scheme-read-string "foo
; . . ."
; newline
; write
; wisp-scheme-read-string "moo : . . bar"
; write
; wisp-scheme-read-string "foo .
; . . bar"
; newline
; write
; wisp-scheme-read-string "moo
; foo
; . . bar baz
; baz waz"
; newline
;;;; stranger stuff
; write
; wisp-scheme-read-string "foo ; bar\n ; nop \n\n; nup\n; nup \n \n\n\nfoo : moo \"\n\" \n___ . goo . hoo"
; newline
; display
; wisp-scheme-read-string " foo ; bar\n ; nop \n\n; nup\n; nup \n \n\n\nfoo : moo"
; newline
; write : wisp-scheme-read-file-chunk "wisp-scheme.w"
; newline
; call-with-output-file "wisp-guile.scm"
; lambda : port
; map
; lambda : chunk
; write chunk port
; wisp-scheme-read-file "wisp-guile.w"
; run all chunks in wisp-guile.w as parsed by wisp-scheme.w. Give wisp-guile.w to parse as argument.
; map primitive-eval : wisp-scheme-read-file "wisp-guile.w" ; actually runs wisp-guile.w with the arguments supplied to this script.
; uncomment the previous line, then run the next line in the shell. If 1 and 2 are equal, this parser works!
; guile wisp.scm wisp-scheme.w > wisp-scheme.scm; guile wisp-scheme.scm wisp-guile.w > 1; guile wisp.scm wisp-guile.w > 2; diff 1 2