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authordos-reis <gdr@axiomatics.org>2007-08-14 05:14:52 +0000
committerdos-reis <gdr@axiomatics.org>2007-08-14 05:14:52 +0000
commitab8cc85adde879fb963c94d15675783f2cf4b183 (patch)
treec202482327f474583b750b2c45dedfc4e4312b1d /src/boot/scanner.boot.pamphlet
downloadopen-axiom-ab8cc85adde879fb963c94d15675783f2cf4b183.tar.gz
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+\documentclass{article}
+\usepackage{axiom}
+
+\title{\File{src/boot/scanner.boot} Pamphlet}
+\author{The Axiom Team}
+
+\begin{document}
+\maketitle
+\begin{abstract}
+\end{abstract}
+\eject
+\tableofcontents
+\eject
+
+\section{License}
+
+<<license>>=
+-- Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
+-- All rights reserved.
+--
+-- Redistribution and use in source and binary forms, with or without
+-- modification, are permitted provided that the following conditions are
+-- met:
+--
+-- - Redistributions of source code must retain the above copyright
+-- notice, this list of conditions and the following disclaimer.
+--
+-- - Redistributions in binary form must reproduce the above copyright
+-- notice, this list of conditions and the following disclaimer in
+-- the documentation and/or other materials provided with the
+-- distribution.
+--
+-- - Neither the name of The Numerical ALgorithms Group Ltd. nor the
+-- names of its contributors may be used to endorse or promote products
+-- derived from this software without specific prior written permission.
+--
+-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
+-- IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+-- TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+-- PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
+-- OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+-- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+-- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+-- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+-- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+-- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+@
+
+<<*>>=
+<<license>>
+
+module '"boot-lexer"
+import '"tokens"
+import '"includer"
+
+)package "BOOTTRAN"
+
+-- converts X to double-float.
+double x ==
+ FLOAT(x, 1.0)
+
+dqUnit s==(a:=[s];CONS(a,a))
+
+dqAppend(x,y)==
+ if null x
+ then y
+ else if null y
+ then x
+ else
+ RPLACD (CDR x,CAR y)
+ RPLACD (x, CDR y)
+ x
+
+dqConcat ld==
+ if null ld
+ then nil
+ else if null rest ld
+ then first ld
+ else dqAppend(first ld,dqConcat rest ld)
+
+dqToList s==if null s then nil else CAR s
+
+shoeConstructToken(ln,lp,b,n)==[b.0,b.1,:cons(lp,n)]
+shoeTokType x== CAR x
+shoeTokPart x== CADR x
+shoeTokPosn x== CDDR x
+shoeTokConstruct(x,y,z)==[x,y,:z]
+
+shoeNextLine(s)==
+ if bStreamNull s
+ then false
+ else
+ $linepos:=s
+ $f:= CAR s
+ $r:= CDR s
+ $ln:=CAR $f
+ $n:=STRPOSL('" ",$ln,0,true)
+ $sz :=# $ln
+ null $n => true
+ QENUM($ln,$n)=shoeTAB =>
+ a:=MAKE_-FULL_-CVEC (7-REM($n,8) ,'" ")
+ $ln.$n:='" ".0
+ $ln:=CONCAT(a,$ln)
+ s1:=cons(cons($ln,CDR $f),$r)
+ shoeNextLine s1
+ true
+
+shoeLineToks(s)==
+ $f: local:=nil
+ $r:local :=nil
+ $ln:local :=nil
+ $n:local:=nil
+ $sz:local := nil
+ $floatok:local:=true
+ $linepos:local:=s
+ not shoeNextLine s => CONS(nil,nil)
+ null $n => shoeLineToks $r
+ fst:=QENUM($ln,0)
+ EQL(fst,shoeCLOSEPAREN)=>
+ command:=shoeLine? $ln=>
+ dq:=dqUnit shoeConstructToken
+ ($ln,$linepos,shoeLeafLine command,0)
+ cons([dq],$r)
+ command:=shoeLisp? $ln=> shoeLispToken($r,command)
+ command:=shoePackage? $ln=>
+ -- z:=car shoeBiteOff command
+ a:=CONCAT('"(IN-PACKAGE ",command,'")")
+ dq:=dqUnit shoeConstructToken
+ ($ln,$linepos,shoeLeafLisp a,0)
+ cons([dq],$r)
+ shoeLineToks $r
+ toks:=[]
+ while $n<$sz repeat toks:=dqAppend(toks,shoeToken())
+ null toks => shoeLineToks $r
+ cons([toks],$r)
+
+shoeLispToken(s,string)==
+ string:=
+ # string=0 or EQL(QENUM(string,0),QENUM('";",0))=> '""
+ string
+ ln:=$ln
+ linepos:=$linepos
+ [r,:st]:=shoeAccumulateLines(s,string)
+ dq:=dqUnit shoeConstructToken(ln,linepos,shoeLeafLisp st,0)
+ cons([dq],r)
+
+shoeAccumulateLines(s,string)==
+ not shoeNextLine s => CONS(s,string)
+ null $n => shoeAccumulateLines($r,string)
+ # $ln=0 => shoeAccumulateLines($r,string)
+ fst:=QENUM($ln,0)
+ EQL(fst,shoeCLOSEPAREN)=>
+ command:=shoeLisp? $ln
+ command and #command>0 =>
+ EQL(QENUM(command,0),QENUM('";",0))=>
+ shoeAccumulateLines($r,string)
+ a:=STRPOS('";",command,0,nil)
+ a=>
+ shoeAccumulateLines($r,
+ CONCAT(string,SUBSTRING(command,0,a-1)))
+ shoeAccumulateLines($r,CONCAT(string,command))
+ shoeAccumulateLines($r,string)
+ CONS(s,string)
+
+-- returns true if token t is closing `parenthesis'.
+shoeCloser t ==
+ MEMQ(shoeKeyWord t, '(CPAREN CBRACK))
+
+shoeToken () ==
+ ln:=$ln
+ c:=QENUM($ln,$n)
+ linepos:=$linepos
+ n:=$n
+ ch:=$ln.$n
+ b:=
+ shoeStartsComment() =>
+ shoeComment()
+ []
+ shoeStartsNegComment() =>
+ shoeNegComment()
+ []
+ c=shoeLispESCAPE =>
+ shoeLispEscape()
+ shoePunctuation c => shoePunct ()
+ shoeStartsId ch => shoeWord (false)
+ c=shoeSPACE =>
+ shoeSpace ()
+ []
+ c = shoeSTRING_CHAR => shoeString ()
+ shoeDigit ch => shoeNumber ()
+ c=shoeESCAPE => shoeEscape()
+ c=shoeTAB =>
+ $n:=$n+1
+ []
+ shoeError ()
+ null b => nil
+ dqUnit shoeConstructToken(ln,linepos,b,n)
+
+-- to pair badge and badgee
+shoeLeafId x== ["ID",INTERN x]
+
+shoeLeafKey x==["KEY",shoeKeyWord x]
+
+shoeLeafInteger x==["INTEGER",shoeIntValue x]
+
+shoeLeafFloat(a,w,e)==
+ b:=shoeIntValue CONCAT(a,w)
+ c:= double b * EXPT(double 10, e-#w)
+ ["FLOAT",c]
+
+shoeLeafString x == ["STRING",x]
+
+shoeLeafLisp x == ["LISP",x]
+shoeLeafLispExp x == ["LISPEXP",x]
+
+shoeLeafLine x == ["LINE",x]
+
+shoeLeafComment x == ["COMMENT", x]
+
+shoeLeafNegComment x== ["NEGCOMMENT", x]
+
+shoeLeafError x == ["ERROR",x]
+
+shoeLeafSpaces x == ["SPACES",x]
+
+shoeLispEscape()==
+ $n:=$n+1
+ if $n>=$sz
+ then
+ SoftShoeError(cons($linepos,$n),'"lisp escape error")
+ shoeLeafError ($ln.$n)
+ else
+ a:=shoeReadLispString($ln,$n)
+ null a =>
+ SoftShoeError(cons($linepos,$n),'"lisp escape error")
+ shoeLeafError ($ln.$n)
+ [exp,n]:=a
+ null n =>
+ $n:= $sz
+ shoeLeafLispExp exp
+ $n:=n
+ shoeLeafLispExp exp
+shoeEscape()==
+ $n:=$n+1
+ a:=shoeEsc()
+ if a then shoeWord true else nil
+
+shoeEsc()==
+ if $n>=$sz
+ then if shoeNextLine($r)
+ then
+ while null $n repeat shoeNextLine($r)
+ shoeEsc()
+ false
+ else false
+ else
+ n1:=STRPOSL('" ",$ln,$n,true)
+ if null n1
+ then
+ shoeNextLine($r)
+ while null $n repeat shoeNextLine($r)
+ shoeEsc()
+ false
+ else true
+
+shoeStartsComment()==
+ if $n<$sz
+ then
+ if QENUM($ln,$n)=shoePLUSCOMMENT
+ then
+ www:=$n+1
+ if www>=$sz
+ then false
+ else QENUM($ln,www) = shoePLUSCOMMENT
+ else false
+ else false
+
+shoeStartsNegComment()==
+ if $n< $sz
+ then
+ if QENUM($ln,$n)=shoeMINUSCOMMENT
+ then
+ www:=$n+1
+ if www>=$sz
+ then false
+ else QENUM($ln,www) = shoeMINUSCOMMENT
+ else false
+ else false
+
+shoeNegComment()==
+ n:=$n
+ $n:=$sz
+ shoeLeafNegComment SUBSTRING($ln,n,nil)
+
+shoeComment()==
+ n:=$n
+ $n:=$sz
+ shoeLeafComment SUBSTRING($ln,n,nil)
+
+shoePunct()==
+ sss:=shoeMatch($ln,$n)
+ $n:=$n+#sss
+ shoeKeyTr sss
+
+shoeKeyTr w==
+ if EQ(shoeKeyWord w,"DOT")
+ then if $floatok
+ then shoePossFloat(w)
+ else shoeLeafKey w
+ else
+ $floatok:=not shoeCloser w
+ shoeLeafKey w
+
+shoePossFloat (w)==
+ if $n>=$sz or not shoeDigit $ln.$n
+ then shoeLeafKey w
+ else
+ w:=shoeInteger()
+ shoeExponent('"0",w)
+
+
+shoeSpace()==
+ n:=$n
+ $n:=STRPOSL('" ",$ln,$n,true)
+ $floatok:=true
+ if null $n
+ then
+ shoeLeafSpaces 0
+ $n:= # $ln
+ else shoeLeafSpaces ($n-n)
+
+shoeString()==
+ $n:=$n+1
+ $floatok:=false
+ shoeLeafString shoeS ()
+
+shoeS()==
+ if $n>=$sz
+ then
+ SoftShoeError(cons($linepos,$n),'"quote added")
+ '""
+ else
+ n:=$n
+ strsym :=STRPOS ('"_"",$ln,$n,nil) or $sz
+ escsym:=STRPOS ('"__"
+ ,$ln,$n,nil) or $sz
+ mn:=MIN(strsym,escsym)
+ if mn=$sz
+ then
+ $n:=$sz
+ SoftShoeError(cons($linepos,$n),'"quote added")
+ SUBSTRING($ln,n,nil)
+ else if mn=strsym
+ then
+ $n:=mn+1
+ SUBSTRING($ln,n,mn-n)
+ else
+ str:=SUBSTRING($ln,n,mn-n)
+ $n:=mn+1
+ a:=shoeEsc()
+ b:=if a
+ then
+ str:=CONCAT(str,$ln.$n)
+ $n:=$n+1
+ shoeS()
+ else shoeS()
+ CONCAT(str,b)
+
+
+
+
+shoeIdEnd(line,n)==
+ while n<#line and shoeIdChar line.n repeat n:=n+1
+ n
+
+
+shoeDigit x== DIGIT_-CHAR_-P x
+
+shoeW(b)==
+ n1:=$n
+ $n:=$n+1
+ l:=$sz
+ endid:=shoeIdEnd($ln,$n)
+ if endid=l or QENUM($ln,endid)^=shoeESCAPE
+ then
+ $n:=endid
+ [b,SUBSTRING($ln,n1,endid-n1)]
+ else
+ str:=SUBSTRING($ln,n1,endid-n1)
+ $n:=endid+1
+ a:=shoeEsc()
+ bb:=if a
+ then shoeW(true)
+ else [b,'""] -- escape finds space or newline
+ [bb.0 or b,CONCAT(str,bb.1)]
+
+shoeWord(esp) ==
+ aaa:=shoeW(false)
+ w:=aaa.1
+ $floatok:=false
+ if esp or aaa.0
+ then shoeLeafId w
+ else if shoeKeyWordP w
+ then
+ $floatok:=true
+ shoeLeafKey w
+ else shoeLeafId w
+
+shoeInteger()==shoeInteger1(false)
+
+shoeInteger1(zro) ==
+ n:=$n
+ l:= $sz
+ while $n<l and shoeDigit($ln.$n) repeat $n:=$n+1
+ if $n=l or QENUM($ln,$n)^=shoeESCAPE
+ then if n=$n and zro
+ then '"0"
+ else SUBSTRING($ln,n,$n-n)
+ else
+ str:=SUBSTRING($ln,n,$n-n)
+ $n:=$n+1
+ a:=shoeEsc()
+ bb:=shoeInteger1(zro)
+ CONCAT(str,bb)
+
+shoeIntValue(s) ==
+ ns := #s
+ ival := 0
+ for i in 0..ns-1 repeat
+ d := shoeOrdToNum ELT(s,i)
+ ival := 10*ival + d
+ ival
+
+shoeNumber() ==
+ a := shoeInteger()
+ if $n>=$sz
+ then shoeLeafInteger a
+ else
+ if $floatok and QENUM($ln,$n)=shoeDOT
+ then
+ n:=$n
+ $n:=$n+1
+ if $n<$sz and QENUM($ln,$n)=shoeDOT
+ then
+ $n:=n
+ shoeLeafInteger a
+ else
+ w:=shoeInteger1(true)
+ shoeExponent(a,w)
+ else shoeLeafInteger a
+
+shoeExponent(a,w)==
+ if $n>=$sz
+ then shoeLeafFloat(a,w,0)
+ else
+ n:=$n
+ c:=QENUM($ln,$n)
+ if c=shoeEXPONENT1 or c=shoeEXPONENT2
+ then
+ $n:=$n+1
+ if $n>=$sz
+ then
+ $n:=n
+ shoeLeafFloat(a,w,0)
+ else if shoeDigit($ln.$n)
+ then
+ e:=shoeInteger()
+ e:=shoeIntValue e
+ shoeLeafFloat(a,w,e)
+ else
+ c1:=QENUM($ln,$n)
+ if c1=shoePLUSCOMMENT or c1=shoeMINUSCOMMENT
+ then
+ $n:=$n+1
+ if $n>=$sz
+ then
+ $n:=n
+ shoeLeafFloat(a,w,0)
+ else
+ if shoeDigit($ln.$n)
+ then
+ e:=shoeInteger()
+ e:=shoeIntValue e
+ shoeLeafFloat(a,w,
+ (if c1=shoeMINUSCOMMENT then MINUS e else e))
+ else
+ $n:=n
+ shoeLeafFloat(a,w,0)
+ else shoeLeafFloat(a,w,0)
+
+shoeError()==
+ n:=$n
+ $n:=$n+1
+ SoftShoeError(cons($linepos,n),
+ CONCAT( '"The character whose number is ",
+ STRINGIMAGE QENUM($ln,n),'" is not a Boot character"))
+ shoeLeafError ($ln.n)
+
+shoeOrdToNum x== DIGIT_-CHAR_-P x
+
+shoeKeyWord st == GETHASH(st,shoeKeyTable)
+
+shoeKeyWordP st == not null GETHASH(st,shoeKeyTable)
+
+shoeMatch(l,i)==shoeSubStringMatch(l,shoeDict,i)
+
+shoeSubStringMatch (l,d,i)==
+ h:= QENUM(l, i)
+ u:=ELT(d,h)
+ ll:=SIZE l
+ done:=false
+ s1:='""
+ for j in 0.. SIZE u - 1 while not done repeat
+ s:=ELT(u,j)
+ ls:=SIZE s
+ done:=if ls+i > ll
+ then false
+ else
+ eql:= true
+ for k in 1..ls-1 while eql repeat
+ eql:= EQL(QENUM(s,k),QENUM(l,k+i))
+ if eql
+ then
+ s1:=s
+ true
+ else false
+ s1
+
+shoePunctuation c== shoePun.c =1
+
+@
+<<scanner.clisp>>=
+(EVAL-WHEN (:COMPILE-TOPLEVEL) (PROVIDE "boot-lexer"))
+
+(IMPORT-MODULE "tokens")
+
+(IMPORT-MODULE "includer")
+
+(IN-PACKAGE "BOOTTRAN")
+
+(DEFUN |double| (|x|) (PROG () (RETURN (FLOAT |x| 1.0))))
+
+(DEFUN |dqUnit| (|s|)
+ (PROG (|a|) (RETURN (PROGN (SETQ |a| (LIST |s|)) (CONS |a| |a|)))))
+
+(DEFUN |dqAppend| (|x| |y|)
+ (PROG ()
+ (RETURN
+ (COND
+ ((NULL |x|) |y|)
+ ((NULL |y|) |x|)
+ ('T (RPLACD (CDR |x|) (CAR |y|)) (RPLACD |x| (CDR |y|)) |x|)))))
+
+(DEFUN |dqConcat| (|ld|)
+ (PROG ()
+ (RETURN
+ (COND
+ ((NULL |ld|) NIL)
+ ((NULL (CDR |ld|)) (CAR |ld|))
+ ('T (|dqAppend| (CAR |ld|) (|dqConcat| (CDR |ld|))))))))
+
+(DEFUN |dqToList| (|s|)
+ (PROG () (RETURN (COND ((NULL |s|) NIL) ('T (CAR |s|))))))
+
+(DEFUN |shoeConstructToken| (|ln| |lp| |b| |n|)
+ (PROG ()
+ (RETURN (CONS (ELT |b| 0) (CONS (ELT |b| 1) (CONS |lp| |n|))))))
+
+(DEFUN |shoeTokType| (|x|) (PROG () (RETURN (CAR |x|))))
+
+(DEFUN |shoeTokPart| (|x|) (PROG () (RETURN (CADR |x|))))
+
+(DEFUN |shoeTokPosn| (|x|) (PROG () (RETURN (CDDR |x|))))
+
+(DEFUN |shoeTokConstruct| (|x| |y| |z|)
+ (PROG () (RETURN (CONS |x| (CONS |y| |z|)))))
+
+(DEFUN |shoeNextLine| (|s|)
+ (PROG (|s1| |a|)
+ (DECLARE (SPECIAL |$sz| |$n| |$ln| |$r| |$f| |$linepos|))
+ (RETURN
+ (COND
+ ((|bStreamNull| |s|) NIL)
+ ('T (SETQ |$linepos| |s|) (SETQ |$f| (CAR |s|))
+ (SETQ |$r| (CDR |s|)) (SETQ |$ln| (CAR |$f|))
+ (SETQ |$n| (STRPOSL " " |$ln| 0 T))
+ (SETQ |$sz| (LENGTH |$ln|))
+ (COND
+ ((NULL |$n|) T)
+ ((EQUAL (QENUM |$ln| |$n|) |shoeTAB|)
+ (PROGN
+ (SETQ |a| (MAKE-FULL-CVEC (- 7 (REM |$n| 8)) " "))
+ (SETF (ELT |$ln| |$n|) (ELT " " 0))
+ (SETQ |$ln| (CONCAT |a| |$ln|))
+ (SETQ |s1| (CONS (CONS |$ln| (CDR |$f|)) |$r|))
+ (|shoeNextLine| |s1|)))
+ ('T T)))))))
+
+(DEFUN |shoeLineToks| (|s|)
+ (PROG (|$linepos| |$floatok| |$sz| |$n| |$ln| |$r| |$f| |toks| |a|
+ |dq| |command| |fst|)
+ (DECLARE (SPECIAL |$floatok| |$f| |$sz| |$linepos| |$ln| |$r| |$n|))
+ (RETURN
+ (PROGN
+ (SETQ |$f| NIL)
+ (SETQ |$r| NIL)
+ (SETQ |$ln| NIL)
+ (SETQ |$n| NIL)
+ (SETQ |$sz| NIL)
+ (SETQ |$floatok| T)
+ (SETQ |$linepos| |s|)
+ (COND
+ ((NULL (|shoeNextLine| |s|)) (CONS NIL NIL))
+ ((NULL |$n|) (|shoeLineToks| |$r|))
+ (#0='T
+ (PROGN
+ (SETQ |fst| (QENUM |$ln| 0))
+ (COND
+ ((EQL |fst| |shoeCLOSEPAREN|)
+ (COND
+ ((SETQ |command| (|shoeLine?| |$ln|))
+ (PROGN
+ (SETQ |dq|
+ (|dqUnit|
+ (|shoeConstructToken| |$ln| |$linepos|
+ (|shoeLeafLine| |command|) 0)))
+ (CONS (LIST |dq|) |$r|)))
+ ((SETQ |command| (|shoeLisp?| |$ln|))
+ (|shoeLispToken| |$r| |command|))
+ ((SETQ |command| (|shoePackage?| |$ln|))
+ (PROGN
+ (SETQ |a| (CONCAT "(IN-PACKAGE " |command| ")"))
+ (SETQ |dq|
+ (|dqUnit|
+ (|shoeConstructToken| |$ln| |$linepos|
+ (|shoeLeafLisp| |a|) 0)))
+ (CONS (LIST |dq|) |$r|)))
+ (#0# (|shoeLineToks| |$r|))))
+ (#0#
+ (PROGN
+ (SETQ |toks| NIL)
+ ((LAMBDA ()
+ (LOOP
+ (COND
+ ((NOT (< |$n| |$sz|)) (RETURN NIL))
+ ('T
+ (SETQ |toks|
+ (|dqAppend| |toks| (|shoeToken|))))))))
+ (COND
+ ((NULL |toks|) (|shoeLineToks| |$r|))
+ (#0# (CONS (LIST |toks|) |$r|)))))))))))))
+
+(DEFUN |shoeLispToken| (|s| |string|)
+ (PROG (|dq| |st| |r| |LETTMP#1| |linepos| |ln|)
+ (DECLARE (SPECIAL |$linepos| |$ln|))
+ (RETURN
+ (PROGN
+ (SETQ |string|
+ (COND
+ ((OR (EQL (LENGTH |string|) 0)
+ (EQL (QENUM |string| 0) (QENUM ";" 0)))
+ "")
+ ('T |string|)))
+ (SETQ |ln| |$ln|)
+ (SETQ |linepos| |$linepos|)
+ (SETQ |LETTMP#1| (|shoeAccumulateLines| |s| |string|))
+ (SETQ |r| (CAR |LETTMP#1|))
+ (SETQ |st| (CDR |LETTMP#1|))
+ (SETQ |dq|
+ (|dqUnit|
+ (|shoeConstructToken| |ln| |linepos|
+ (|shoeLeafLisp| |st|) 0)))
+ (CONS (LIST |dq|) |r|)))))
+
+(DEFUN |shoeAccumulateLines| (|s| |string|)
+ (PROG (|a| |command| |fst|)
+ (DECLARE (SPECIAL |$ln| |$r| |$n|))
+ (RETURN
+ (COND
+ ((NULL (|shoeNextLine| |s|)) (CONS |s| |string|))
+ ((NULL |$n|) (|shoeAccumulateLines| |$r| |string|))
+ ((EQL (LENGTH |$ln|) 0) (|shoeAccumulateLines| |$r| |string|))
+ (#0='T
+ (PROGN
+ (SETQ |fst| (QENUM |$ln| 0))
+ (COND
+ ((EQL |fst| |shoeCLOSEPAREN|)
+ (PROGN
+ (SETQ |command| (|shoeLisp?| |$ln|))
+ (COND
+ ((AND |command| (< 0 (LENGTH |command|)))
+ (COND
+ ((EQL (QENUM |command| 0) (QENUM ";" 0))
+ (|shoeAccumulateLines| |$r| |string|))
+ (#0#
+ (PROGN
+ (SETQ |a| (STRPOS ";" |command| 0 NIL))
+ (COND
+ (|a| (|shoeAccumulateLines| |$r|
+ (CONCAT |string|
+ (SUBSTRING |command| 0 (- |a| 1)))))
+ (#0#
+ (|shoeAccumulateLines| |$r|
+ (CONCAT |string| |command|))))))))
+ (#0# (|shoeAccumulateLines| |$r| |string|)))))
+ (#0# (CONS |s| |string|)))))))))
+
+(DEFUN |shoeCloser| (|t|)
+ (PROG () (RETURN (MEMQ (|shoeKeyWord| |t|) '(CPAREN CBRACK)))))
+
+(DEFUN |shoeToken| ()
+ (PROG (|b| |ch| |n| |linepos| |c| |ln|)
+ (DECLARE (SPECIAL |$linepos| |$n| |$ln|))
+ (RETURN
+ (PROGN
+ (SETQ |ln| |$ln|)
+ (SETQ |c| (QENUM |$ln| |$n|))
+ (SETQ |linepos| |$linepos|)
+ (SETQ |n| |$n|)
+ (SETQ |ch| (ELT |$ln| |$n|))
+ (SETQ |b|
+ (COND
+ ((|shoeStartsComment|) (PROGN (|shoeComment|) NIL))
+ ((|shoeStartsNegComment|)
+ (PROGN (|shoeNegComment|) NIL))
+ ((EQUAL |c| |shoeLispESCAPE|) (|shoeLispEscape|))
+ ((|shoePunctuation| |c|) (|shoePunct|))
+ ((|shoeStartsId| |ch|) (|shoeWord| NIL))
+ ((EQUAL |c| |shoeSPACE|) (PROGN (|shoeSpace|) NIL))
+ ((EQUAL |c| |shoeSTRINGCHAR|) (|shoeString|))
+ ((|shoeDigit| |ch|) (|shoeNumber|))
+ ((EQUAL |c| |shoeESCAPE|) (|shoeEscape|))
+ ((EQUAL |c| |shoeTAB|)
+ (PROGN (SETQ |$n| (+ |$n| 1)) NIL))
+ (#0='T (|shoeError|))))
+ (COND
+ ((NULL |b|) NIL)
+ (#0#
+ (|dqUnit| (|shoeConstructToken| |ln| |linepos| |b| |n|))))))))
+
+(DEFUN |shoeLeafId| (|x|) (PROG () (RETURN (LIST 'ID (INTERN |x|)))))
+
+(DEFUN |shoeLeafKey| (|x|)
+ (PROG () (RETURN (LIST 'KEY (|shoeKeyWord| |x|)))))
+
+(DEFUN |shoeLeafInteger| (|x|)
+ (PROG () (RETURN (LIST 'INTEGER (|shoeIntValue| |x|)))))
+
+(DEFUN |shoeLeafFloat| (|a| |w| |e|)
+ (PROG (|c| |b|)
+ (RETURN
+ (PROGN
+ (SETQ |b| (|shoeIntValue| (CONCAT |a| |w|)))
+ (SETQ |c|
+ (* (|double| |b|) (EXPT (|double| 10) (- |e| (LENGTH |w|)))))
+ (LIST 'FLOAT |c|)))))
+
+(DEFUN |shoeLeafString| (|x|) (PROG () (RETURN (LIST 'STRING |x|))))
+
+(DEFUN |shoeLeafLisp| (|x|) (PROG () (RETURN (LIST 'LISP |x|))))
+
+(DEFUN |shoeLeafLispExp| (|x|) (PROG () (RETURN (LIST 'LISPEXP |x|))))
+
+(DEFUN |shoeLeafLine| (|x|) (PROG () (RETURN (LIST 'LINE |x|))))
+
+(DEFUN |shoeLeafComment| (|x|) (PROG () (RETURN (LIST 'COMMENT |x|))))
+
+(DEFUN |shoeLeafNegComment| (|x|)
+ (PROG () (RETURN (LIST 'NEGCOMMENT |x|))))
+
+(DEFUN |shoeLeafError| (|x|) (PROG () (RETURN (LIST 'ERROR |x|))))
+
+(DEFUN |shoeLeafSpaces| (|x|) (PROG () (RETURN (LIST 'SPACES |x|))))
+
+(DEFUN |shoeLispEscape| ()
+ (PROG (|n| |exp| |a|)
+ (DECLARE (SPECIAL |$ln| |$linepos| |$sz| |$n|))
+ (RETURN
+ (PROGN
+ (SETQ |$n| (+ |$n| 1))
+ (COND
+ ((NOT (< |$n| |$sz|))
+ (|SoftShoeError| (CONS |$linepos| |$n|) "lisp escape error")
+ (|shoeLeafError| (ELT |$ln| |$n|)))
+ ('T (SETQ |a| (|shoeReadLispString| |$ln| |$n|))
+ (COND
+ ((NULL |a|)
+ (PROGN
+ (|SoftShoeError| (CONS |$linepos| |$n|)
+ "lisp escape error")
+ (|shoeLeafError| (ELT |$ln| |$n|))))
+ (#0='T
+ (PROGN
+ (SETQ |exp| (CAR |a|))
+ (SETQ |n| (CADR |a|))
+ (COND
+ ((NULL |n|)
+ (PROGN (SETQ |$n| |$sz|) (|shoeLeafLispExp| |exp|)))
+ (#0#
+ (PROGN (SETQ |$n| |n|) (|shoeLeafLispExp| |exp|)))))))))))))
+
+(DEFUN |shoeEscape| ()
+ (PROG (|a|)
+ (DECLARE (SPECIAL |$n|))
+ (RETURN
+ (PROGN
+ (SETQ |$n| (+ |$n| 1))
+ (SETQ |a| (|shoeEsc|))
+ (COND (|a| (|shoeWord| T)) ('T NIL))))))
+
+(DEFUN |shoeEsc| ()
+ (PROG (|n1|)
+ (DECLARE (SPECIAL |$ln| |$r| |$sz| |$n|))
+ (RETURN
+ (COND
+ ((NOT (< |$n| |$sz|))
+ (COND
+ ((|shoeNextLine| |$r|)
+ ((LAMBDA ()
+ (LOOP
+ (COND
+ (|$n| (RETURN NIL))
+ (#0='T (|shoeNextLine| |$r|))))))
+ (|shoeEsc|) NIL)
+ (#1='T NIL)))
+ (#1# (SETQ |n1| (STRPOSL " " |$ln| |$n| T))
+ (COND
+ ((NULL |n1|) (|shoeNextLine| |$r|)
+ ((LAMBDA ()
+ (LOOP
+ (COND
+ (|$n| (RETURN NIL))
+ (#0# (|shoeNextLine| |$r|))))))
+ (|shoeEsc|) NIL)
+ (#1# T)))))))
+
+(DEFUN |shoeStartsComment| ()
+ (PROG (|www|)
+ (DECLARE (SPECIAL |$ln| |$sz| |$n|))
+ (RETURN
+ (COND
+ ((< |$n| |$sz|)
+ (COND
+ ((EQUAL (QENUM |$ln| |$n|) |shoePLUSCOMMENT|)
+ (SETQ |www| (+ |$n| 1))
+ (COND
+ ((NOT (< |www| |$sz|)) NIL)
+ (#0='T (EQUAL (QENUM |$ln| |www|) |shoePLUSCOMMENT|))))
+ (#0# NIL)))
+ (#0# NIL)))))
+
+(DEFUN |shoeStartsNegComment| ()
+ (PROG (|www|)
+ (DECLARE (SPECIAL |$ln| |$sz| |$n|))
+ (RETURN
+ (COND
+ ((< |$n| |$sz|)
+ (COND
+ ((EQUAL (QENUM |$ln| |$n|) |shoeMINUSCOMMENT|)
+ (SETQ |www| (+ |$n| 1))
+ (COND
+ ((NOT (< |www| |$sz|)) NIL)
+ (#0='T (EQUAL (QENUM |$ln| |www|) |shoeMINUSCOMMENT|))))
+ (#0# NIL)))
+ (#0# NIL)))))
+
+(DEFUN |shoeNegComment| ()
+ (PROG (|n|)
+ (DECLARE (SPECIAL |$ln| |$sz| |$n|))
+ (RETURN
+ (PROGN
+ (SETQ |n| |$n|)
+ (SETQ |$n| |$sz|)
+ (|shoeLeafNegComment| (SUBSTRING |$ln| |n| NIL))))))
+
+(DEFUN |shoeComment| ()
+ (PROG (|n|)
+ (DECLARE (SPECIAL |$ln| |$sz| |$n|))
+ (RETURN
+ (PROGN
+ (SETQ |n| |$n|)
+ (SETQ |$n| |$sz|)
+ (|shoeLeafComment| (SUBSTRING |$ln| |n| NIL))))))
+
+(DEFUN |shoePunct| ()
+ (PROG (|sss|)
+ (DECLARE (SPECIAL |$n| |$ln|))
+ (RETURN
+ (PROGN
+ (SETQ |sss| (|shoeMatch| |$ln| |$n|))
+ (SETQ |$n| (+ |$n| (LENGTH |sss|)))
+ (|shoeKeyTr| |sss|)))))
+
+(DEFUN |shoeKeyTr| (|w|)
+ (PROG ()
+ (DECLARE (SPECIAL |$floatok|))
+ (RETURN
+ (COND
+ ((EQ (|shoeKeyWord| |w|) 'DOT)
+ (COND
+ (|$floatok| (|shoePossFloat| |w|))
+ (#0='T (|shoeLeafKey| |w|))))
+ (#0# (SETQ |$floatok| (NULL (|shoeCloser| |w|)))
+ (|shoeLeafKey| |w|))))))
+
+(DEFUN |shoePossFloat| (|w|)
+ (PROG ()
+ (DECLARE (SPECIAL |$ln| |$sz| |$n|))
+ (RETURN
+ (COND
+ ((OR (NOT (< |$n| |$sz|))
+ (NULL (|shoeDigit| (ELT |$ln| |$n|))))
+ (|shoeLeafKey| |w|))
+ ('T (SETQ |w| (|shoeInteger|)) (|shoeExponent| "0" |w|))))))
+
+(DEFUN |shoeSpace| ()
+ (PROG (|n|)
+ (DECLARE (SPECIAL |$floatok| |$ln| |$n|))
+ (RETURN
+ (PROGN
+ (SETQ |n| |$n|)
+ (SETQ |$n| (STRPOSL " " |$ln| |$n| T))
+ (SETQ |$floatok| T)
+ (COND
+ ((NULL |$n|) (|shoeLeafSpaces| 0) (SETQ |$n| (LENGTH |$ln|)))
+ ('T (|shoeLeafSpaces| (- |$n| |n|))))))))
+
+(DEFUN |shoeString| ()
+ (PROG ()
+ (DECLARE (SPECIAL |$floatok| |$n|))
+ (RETURN
+ (PROGN
+ (SETQ |$n| (+ |$n| 1))
+ (SETQ |$floatok| NIL)
+ (|shoeLeafString| (|shoeS|))))))
+
+(DEFUN |shoeS| ()
+ (PROG (|b| |a| |str| |mn| |escsym| |strsym| |n|)
+ (DECLARE (SPECIAL |$ln| |$linepos| |$sz| |$n|))
+ (RETURN
+ (COND
+ ((NOT (< |$n| |$sz|))
+ (|SoftShoeError| (CONS |$linepos| |$n|) "quote added") "")
+ (#0='T (SETQ |n| |$n|)
+ (SETQ |strsym| (OR (STRPOS "\"" |$ln| |$n| NIL) |$sz|))
+ (SETQ |escsym| (OR (STRPOS "_" |$ln| |$n| NIL) |$sz|))
+ (SETQ |mn| (MIN |strsym| |escsym|))
+ (COND
+ ((EQUAL |mn| |$sz|) (SETQ |$n| |$sz|)
+ (|SoftShoeError| (CONS |$linepos| |$n|) "quote added")
+ (SUBSTRING |$ln| |n| NIL))
+ ((EQUAL |mn| |strsym|) (SETQ |$n| (+ |mn| 1))
+ (SUBSTRING |$ln| |n| (- |mn| |n|)))
+ (#0# (SETQ |str| (SUBSTRING |$ln| |n| (- |mn| |n|)))
+ (SETQ |$n| (+ |mn| 1)) (SETQ |a| (|shoeEsc|))
+ (SETQ |b|
+ (COND
+ (|a| (SETQ |str| (CONCAT |str| (ELT |$ln| |$n|)))
+ (SETQ |$n| (+ |$n| 1)) (|shoeS|))
+ (#0# (|shoeS|))))
+ (CONCAT |str| |b|))))))))
+
+(DEFUN |shoeIdEnd| (|line| |n|)
+ (PROG ()
+ (RETURN
+ (PROGN
+ ((LAMBDA ()
+ (LOOP
+ (COND
+ ((NOT (AND (< |n| (LENGTH |line|))
+ (|shoeIdChar| (ELT |line| |n|))))
+ (RETURN NIL))
+ ('T (SETQ |n| (+ |n| 1)))))))
+ |n|))))
+
+(DEFUN |shoeDigit| (|x|) (PROG () (RETURN (DIGIT-CHAR-P |x|))))
+
+(DEFUN |shoeW| (|b|)
+ (PROG (|bb| |a| |str| |endid| |l| |n1|)
+ (DECLARE (SPECIAL |$ln| |$sz| |$n|))
+ (RETURN
+ (PROGN
+ (SETQ |n1| |$n|)
+ (SETQ |$n| (+ |$n| 1))
+ (SETQ |l| |$sz|)
+ (SETQ |endid| (|shoeIdEnd| |$ln| |$n|))
+ (COND
+ ((OR (EQUAL |endid| |l|)
+ (NOT (EQUAL (QENUM |$ln| |endid|) |shoeESCAPE|)))
+ (SETQ |$n| |endid|)
+ (LIST |b| (SUBSTRING |$ln| |n1| (- |endid| |n1|))))
+ (#0='T (SETQ |str| (SUBSTRING |$ln| |n1| (- |endid| |n1|)))
+ (SETQ |$n| (+ |endid| 1)) (SETQ |a| (|shoeEsc|))
+ (SETQ |bb| (COND (|a| (|shoeW| T)) (#0# (LIST |b| ""))))
+ (LIST (OR (ELT |bb| 0) |b|) (CONCAT |str| (ELT |bb| 1)))))))))
+
+(DEFUN |shoeWord| (|esp|)
+ (PROG (|w| |aaa|)
+ (DECLARE (SPECIAL |$floatok|))
+ (RETURN
+ (PROGN
+ (SETQ |aaa| (|shoeW| NIL))
+ (SETQ |w| (ELT |aaa| 1))
+ (SETQ |$floatok| NIL)
+ (COND
+ ((OR |esp| (ELT |aaa| 0)) (|shoeLeafId| |w|))
+ ((|shoeKeyWordP| |w|) (SETQ |$floatok| T)
+ (|shoeLeafKey| |w|))
+ ('T (|shoeLeafId| |w|)))))))
+
+(DEFUN |shoeInteger| () (PROG () (RETURN (|shoeInteger1| NIL))))
+
+(DEFUN |shoeInteger1| (|zro|)
+ (PROG (|bb| |a| |str| |l| |n|)
+ (DECLARE (SPECIAL |$ln| |$sz| |$n|))
+ (RETURN
+ (PROGN
+ (SETQ |n| |$n|)
+ (SETQ |l| |$sz|)
+ ((LAMBDA ()
+ (LOOP
+ (COND
+ ((NOT (AND (< |$n| |l|) (|shoeDigit| (ELT |$ln| |$n|))))
+ (RETURN NIL))
+ ('T (SETQ |$n| (+ |$n| 1)))))))
+ (COND
+ ((OR (EQUAL |$n| |l|)
+ (NOT (EQUAL (QENUM |$ln| |$n|) |shoeESCAPE|)))
+ (COND
+ ((AND (EQUAL |n| |$n|) |zro|) "0")
+ (#0='T (SUBSTRING |$ln| |n| (- |$n| |n|)))))
+ (#0# (SETQ |str| (SUBSTRING |$ln| |n| (- |$n| |n|)))
+ (SETQ |$n| (+ |$n| 1)) (SETQ |a| (|shoeEsc|))
+ (SETQ |bb| (|shoeInteger1| |zro|)) (CONCAT |str| |bb|)))))))
+
+(DEFUN |shoeIntValue| (|s|)
+ (PROG (|d| |ival| |ns|)
+ (RETURN
+ (PROGN
+ (SETQ |ns| (LENGTH |s|))
+ (SETQ |ival| 0)
+ ((LAMBDA (|bfVar#1| |i|)
+ (LOOP
+ (COND
+ ((> |i| |bfVar#1|) (RETURN NIL))
+ ('T
+ (PROGN
+ (SETQ |d| (|shoeOrdToNum| (ELT |s| |i|)))
+ (SETQ |ival| (+ (* 10 |ival|) |d|)))))
+ (SETQ |i| (+ |i| 1))))
+ (- |ns| 1) 0)
+ |ival|))))
+
+(DEFUN |shoeNumber| ()
+ (PROG (|w| |n| |a|)
+ (DECLARE (SPECIAL |$ln| |$floatok| |$sz| |$n|))
+ (RETURN
+ (PROGN
+ (SETQ |a| (|shoeInteger|))
+ (COND
+ ((NOT (< |$n| |$sz|)) (|shoeLeafInteger| |a|))
+ ((AND |$floatok| (EQUAL (QENUM |$ln| |$n|) |shoeDOT|))
+ (SETQ |n| |$n|) (SETQ |$n| (+ |$n| 1))
+ (COND
+ ((AND (< |$n| |$sz|) (EQUAL (QENUM |$ln| |$n|) |shoeDOT|))
+ (SETQ |$n| |n|) (|shoeLeafInteger| |a|))
+ (#0='T (SETQ |w| (|shoeInteger1| T))
+ (|shoeExponent| |a| |w|))))
+ (#0# (|shoeLeafInteger| |a|)))))))
+
+(DEFUN |shoeExponent| (|a| |w|)
+ (PROG (|c1| |e| |c| |n|)
+ (DECLARE (SPECIAL |$ln| |$sz| |$n|))
+ (RETURN
+ (COND
+ ((NOT (< |$n| |$sz|)) (|shoeLeafFloat| |a| |w| 0))
+ (#0='T (SETQ |n| |$n|) (SETQ |c| (QENUM |$ln| |$n|))
+ (COND
+ ((OR (EQUAL |c| |shoeEXPONENT1|)
+ (EQUAL |c| |shoeEXPONENT2|))
+ (SETQ |$n| (+ |$n| 1))
+ (COND
+ ((NOT (< |$n| |$sz|)) (SETQ |$n| |n|)
+ (|shoeLeafFloat| |a| |w| 0))
+ ((|shoeDigit| (ELT |$ln| |$n|))
+ (SETQ |e| (|shoeInteger|))
+ (SETQ |e| (|shoeIntValue| |e|))
+ (|shoeLeafFloat| |a| |w| |e|))
+ (#0# (SETQ |c1| (QENUM |$ln| |$n|))
+ (COND
+ ((OR (EQUAL |c1| |shoePLUSCOMMENT|)
+ (EQUAL |c1| |shoeMINUSCOMMENT|))
+ (SETQ |$n| (+ |$n| 1))
+ (COND
+ ((NOT (< |$n| |$sz|)) (SETQ |$n| |n|)
+ (|shoeLeafFloat| |a| |w| 0))
+ ((|shoeDigit| (ELT |$ln| |$n|))
+ (SETQ |e| (|shoeInteger|))
+ (SETQ |e| (|shoeIntValue| |e|))
+ (|shoeLeafFloat| |a| |w|
+ (COND
+ ((EQUAL |c1| |shoeMINUSCOMMENT|) (- |e|))
+ (#0# |e|))))
+ (#0# (SETQ |$n| |n|) (|shoeLeafFloat| |a| |w| 0))))))))
+ (#0# (|shoeLeafFloat| |a| |w| 0))))))))
+
+(DEFUN |shoeError| ()
+ (PROG (|n|)
+ (DECLARE (SPECIAL |$ln| |$linepos| |$n|))
+ (RETURN
+ (PROGN
+ (SETQ |n| |$n|)
+ (SETQ |$n| (+ |$n| 1))
+ (|SoftShoeError| (CONS |$linepos| |n|)
+ (CONCAT "The character whose number is "
+ (STRINGIMAGE (QENUM |$ln| |n|))
+ " is not a Boot character"))
+ (|shoeLeafError| (ELT |$ln| |n|))))))
+
+(DEFUN |shoeOrdToNum| (|x|) (PROG () (RETURN (DIGIT-CHAR-P |x|))))
+
+(DEFUN |shoeKeyWord| (|st|)
+ (PROG () (RETURN (GETHASH |st| |shoeKeyTable|))))
+
+(DEFUN |shoeKeyWordP| (|st|)
+ (PROG () (RETURN (NULL (NULL (GETHASH |st| |shoeKeyTable|))))))
+
+(DEFUN |shoeMatch| (|l| |i|)
+ (PROG () (RETURN (|shoeSubStringMatch| |l| |shoeDict| |i|))))
+
+(DEFUN |shoeSubStringMatch| (|l| |d| |i|)
+ (PROG (|eql| |ls| |s| |s1| |done| |ll| |u| |h|)
+ (RETURN
+ (PROGN
+ (SETQ |h| (QENUM |l| |i|))
+ (SETQ |u| (ELT |d| |h|))
+ (SETQ |ll| (SIZE |l|))
+ (SETQ |done| NIL)
+ (SETQ |s1| "")
+ ((LAMBDA (|bfVar#2| |j|)
+ (LOOP
+ (COND
+ ((OR (> |j| |bfVar#2|) |done|) (RETURN NIL))
+ (#0='T
+ (PROGN
+ (SETQ |s| (ELT |u| |j|))
+ (SETQ |ls| (SIZE |s|))
+ (SETQ |done|
+ (COND
+ ((< |ll| (+ |ls| |i|)) NIL)
+ (#1='T (SETQ |eql| T)
+ ((LAMBDA (|bfVar#3| |k|)
+ (LOOP
+ (COND
+ ((OR (> |k| |bfVar#3|) (NOT |eql|))
+ (RETURN NIL))
+ (#0#
+ (SETQ |eql|
+ (EQL (QENUM |s| |k|)
+ (QENUM |l| (+ |k| |i|))))))
+ (SETQ |k| (+ |k| 1))))
+ (- |ls| 1) 1)
+ (COND (|eql| (SETQ |s1| |s|) T) (#1# NIL))))))))
+ (SETQ |j| (+ |j| 1))))
+ (- (SIZE |u|) 1) 0)
+ |s1|))))
+
+(DEFUN |shoePunctuation| (|c|)
+ (PROG () (RETURN (EQL (ELT |shoePun| |c|) 1))))
+
+@
+
+\end{document}