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|
-- Copyright (c) 1991-2002, The Numerical Algorithms Group Ltd.
-- All rights reserved.
-- Copyright (C) 2007-2008, Gabriel Dos Reis.
-- 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.
import macros
import sys_-utility
namespace BOOT
module g_-util where
getTypeOfSyntax: %Form -> %Mode
++
$interpOnly := false
--% Utility Functions of General Use
ELEMN(x, n, d) ==
null x => d
n = 1 => car x
ELEMN(cdr x, SUB1 n, d)
PPtoFile(x, fname) ==
stream := DEFIOSTREAM([['MODE, :'OUTPUT], ['FILE, :fname]], 80, 0)
PRETTYPRINT(x, stream)
SHUT stream
x
++ Query properties for an entity in a given environment.
get: (%Thing,%Symbol,%List) -> %Thing
get0: (%Thing,%Symbol,%List) -> %Thing
get1: (%Thing,%Symbol,%List) -> %Thing
get2: (%Thing,%Symbol,%List) -> %Thing
get(x,prop,e) ==
$InteractiveMode => get0(x,prop,e)
get1(x,prop,e)
get0(x,prop,e) ==
not atom x => get(QCAR x,prop,e)
u:= QLASSQ(x,CAR QCAR e) => QLASSQ(prop,u)
(tail:= CDR QCAR e) and (u:= fastSearchCurrentEnv(x,tail)) =>
QLASSQ(prop,u)
nil
get1(x,prop,e) ==
--this is the old get
not atom x => get(QCAR x,prop,e)
prop="modemap" and $insideCapsuleFunctionIfTrue=true =>
LASSOC("modemap",getProplist(x,$CapsuleModemapFrame))
or get2(x,prop,e)
LASSOC(prop,getProplist(x,e)) or get2(x,prop,e)
get2(x,prop,e) ==
prop="modemap" and IDENTP x and constructor? x =>
(u := getConstructorModemapFromDB x) => [u]
nil
nil
++ Update properties of an entity in an environment.
put: (%Thing,%Symbol,%Thing,%List) -> %List
addBinding: (%Thing,%List,%List) -> %List
augProplistOf: (%Thing,%Symbol,%Thing,%List) -> %List
augProplist: (%List,%Thing,%Thing) -> %List
put(x,prop,val,e) ==
$InteractiveMode and not EQ(e,$CategoryFrame) =>
putIntSymTab(x,prop,val,e)
--e must never be $CapsuleModemapFrame
null atom x => put(first x,prop,val,e)
newProplist:= augProplistOf(x,prop,val,e)
prop="modemap" and $insideCapsuleFunctionIfTrue=true =>
SAY ["**** modemap PUT on CapsuleModemapFrame: ",val]
$CapsuleModemapFrame:=
addBinding(x,augProplistOf(x,"modemap",val,$CapsuleModemapFrame),
$CapsuleModemapFrame)
e
addBinding(x,newProplist,e)
--% Syntax manipulation
++ Build a quasiquotation form for `x'.
quasiquote x ==
["[||]",x]
++ Extract the quoted form, otherwise return nil
isQuasiquote m ==
m is ["[||]",y] => y
getTypeOfSyntax t ==
atom t =>
IDENTP t => '(Identifier)
(m := getBasicMode t) and not member(m,[$EmptyMode,$NoValueMode]) =>
["Literal",m]
$Syntax
[op,:.] := t
op = "Mapping" => '(MappingAst)
op = "Join" => '(JoinAst)
op in '(%Import import) => '(ImportAst)
op in '(%Signature SIGNATURE) => '(SignatureAst)
op = "QUOTE" and #t = 2 and IDENTP second t => ["Literal",$Symbol]
op = "IF" => '(IfAst)
op = "REPEAT" => '(RepeatAst)
op = "WHILE" => '(WhileAst)
op = "IN" => '(InAst)
op = "COLLECT" => '(CollectAst)
op = "construct" => '(ConstructAst)
op = "exit" => '(ExitAst)
op = "return" => '(ReturnAst)
op = "SEGMENT" => '(SegmentAst)
op = "SEQ" => '(SequenceAst)
op = "pretend" => '(PretendAst)
op = "::" => '(CoerceAst)
op = "@" => '(RestrictAst)
op = "%LET" => '(LetAst)
op = "|" => '(SuchThatAst)
op = ":" => '(ColonAst)
op = "CAPSULE" => '(CapsuleAst)
op = "case" => '(CaseAst)
op = "has" => '(HasAst)
op = "is" => '(IsAst)
op = "CATEGORY" => '(CategoryAst)
op = "DEF" => '(DefinitionAst)
op = "MDEF" => '(MacroAst)
op in '(ATTRIBUTE %Attribute) => '(AttributeAst)
$Syntax
--%
-- Convert an arbitrary lisp object to canonical boolean.
bool: %Thing -> %Boolean
bool x ==
NULL NULL x
TruthP x ==
--True if x is a predicate that's always true
x is nil => nil
x=true => true
x is ['QUOTE,:.] => true
nil
--% Record and Union utils.
stripUnionTags doms ==
[if dom is [":",.,dom'] then dom' else dom for dom in doms]
isTaggedUnion u ==
u is ['Union,:tl] and tl and first tl is [":",.,.] and true
getUnionOrRecordTags u ==
tags := nil
if u is ['Union, :tl] or u is ['Record, :tl] then
for t in tl repeat
if t is [":",tag,.] then tags := cons(tag, tags)
tags
--% Various lispy things
Identity x == x
length1? l == PAIRP l and not PAIRP QCDR l
length2? l == PAIRP l and PAIRP (l := QCDR l) and not PAIRP QCDR l
pairList(u,v) == [[x,:y] for x in u for y in v]
-- GETALIST(alist,prop) == IFCDR assoc(prop,alist)
GETALIST(alist,prop) == CDR assoc(prop,alist)
PUTALIST(alist,prop,val) ==
null alist => [[prop,:val]]
pair := assoc(prop,alist) =>
CDR pair = val => alist
-- else we fall over Lucid's read-only storage feature again
QRPLACD(pair,val)
alist
QRPLACD(LASTPAIR alist,[[prop,:val]])
alist
REMALIST(alist,prop) ==
null alist => alist
alist is [[ =prop,:.],:r] =>
null r => NIL
QRPLACA(alist,CAR r)
QRPLACD(alist,CDR r)
alist
null rest alist => alist
l := alist
ok := true
while ok repeat
[.,[p,:.],:r] := l
p = prop =>
ok := NIL
QRPLACD(l,r)
if null (l := QCDR l) or null rest l then ok := NIL
alist
deleteLassoc(x,y) ==
y is [[a,:.],:y'] =>
EQ(x,a) => y'
[first y,:deleteLassoc(x,y')]
y
--% association list functions
deleteAssoc(x,y) ==
y is [[a,:.],:y'] =>
a=x => deleteAssoc(x,y')
[first y,:deleteAssoc(x,y')]
y
deleteAssocWOC(x,y) ==
null y => y
[[a,:.],:t]:= y
x=a => t
(fn(x,y);y) where fn(x,y is [h,:t]) ==
t is [[a,:.],:t1] =>
x=a => RPLACD(y,t1)
fn(x,t)
nil
insertWOC(x,y) ==
null y => [x]
(fn(x,y); y) where fn(x,y is [h,:t]) ==
x=h => nil
null t =>
RPLACD(y,[h,:t])
RPLACA(y,x)
fn(x,t)
--% Miscellaneous Functions for Working with Strings
fillerSpaces(n,:charPart) ==
n <= 0 => '""
MAKE_-FULL_-CVEC(n,IFCAR charPart or '" ")
centerString(text,width,fillchar) ==
wid := entryWidth text
wid >= width => text
f := DIVIDE(width - wid,2)
fill1 := ""
for i in 1..(f.0) repeat
fill1 := STRCONC(fillchar,fill1)
fill2:= fill1
if f.1 ^= 0 then fill1 := STRCONC(fillchar,fill1)
[fill1,text,fill2]
stringPrefix?(pref,str) ==
-- sees if the first #pref letters of str are pref
-- replaces STRINGPREFIXP
null (STRINGP(pref) and STRINGP(str)) => NIL
(lp := QCSIZE pref) = 0 => true
lp > QCSIZE str => NIL
ok := true
i := 0
while ok and (i < lp) repeat
not EQ(SCHAR(pref,i),SCHAR(str,i)) => ok := NIL
i := i + 1
ok
stringChar2Integer(str,pos) ==
-- replaces GETSTRINGDIGIT in UT LISP
-- returns small integer represented by character in position pos
-- in string str. Returns NIL if not a digit or other error.
if IDENTP str then str := PNAME str
null (STRINGP(str) and
INTEGERP(pos) and (pos >= 0) and (pos < QCSIZE(str))) => NIL
not DIGITP(d := SCHAR(str,pos)) => NIL
DIG2FIX d
dropLeadingBlanks str ==
str := object2String str
l := QCSIZE str
nb := NIL
i := 0
while (i < l) and not nb repeat
if SCHAR(str,i) ^= " " then nb := i
else i := i + 1
nb = 0 => str
nb => SUBSTRING(str,nb,NIL)
'""
concat(:l) == concatList l
concatList [x,:y] ==
null y => x
null x => concatList y
concat1(x,concatList y)
concat1(x,y) ==
null x => y
atom x => (null y => x; atom y => [x,y]; [x,:y])
null y => x
atom y => [:x,y]
[:x,:y]
--% BOOT ravel and reshape
ravel a == a
reshape(a,b) == a
--% Some functions for algebra code
boolODDP x == ODDP x
--% Miscellaneous
freeOfSharpVars x ==
atom x => not isSharpVarWithNum x
freeOfSharpVars first x and freeOfSharpVars rest x
listOfSharpVars x ==
atom x => (isSharpVarWithNum x => LIST x; nil)
union(listOfSharpVars first x,listOfSharpVars rest x)
listOfPatternIds x ==
isPatternVar x => [x]
atom x => nil
x is ['QUOTE,:.] => nil
UNIONQ(listOfPatternIds first x,listOfPatternIds rest x)
isPatternVar v ==
-- a pattern variable consists of a star followed by a star or digit(s)
IDENTP(v) and MEMQ(v,'(_*_* _*1 _*2 _*3 _*4 _*5 _*6 _*7 _*8 _*9 _*10
_*11 _*12 _*13 _*14 _*15 _*16 _*17 _*18 _*19 _*20)) and true
removeZeroOne x ==
-- replace all occurrences of (Zero) and (One) with
-- 0 and 1
x = $Zero => 0
x = $One => 1
atom x => x
[removeZeroOne first x,:removeZeroOne rest x]
removeZeroOneDestructively t ==
-- replace all occurrences of (Zero) and (One) with
-- 0 and 1 destructively
t = $Zero => 0
t = $One => 1
atom t => t
RPLNODE(t,removeZeroOneDestructively first t,
removeZeroOneDestructively rest t)
flattenSexpr s ==
null s => s
ATOM s => s
[f,:r] := s
ATOM f => [f,:flattenSexpr r]
[:flattenSexpr f,:flattenSexpr r]
isLowerCaseLetter c ==
LOWER_-CASE_-P c
isUpperCaseLetter c ==
UPPER_-CASE_-P c
isLetter c ==
ALPHA_-CHAR_-P c
update() ==
runCommand
STRCONC('"SPADEDIT ",STRINGIMAGE _/VERSION,'" ",STRINGIMAGE _/WSNAME,'" A")
_/UPDATE()
--% Inplace Merge Sort for Lists
-- MBM April/88
-- listSort(pred,list) or listSort(pred,list,key)
-- the pred function is a boolean valued function defining the ordering
-- the key function extracts the key from an item for comparison by pred
listSort(pred,list,:optional) ==
NOT functionp pred => error "listSort: first arg must be a function"
NOT LISTP list => error "listSort: second argument must be a list"
NULL optional => mergeSort(pred,function Identity,list,LENGTH list)
key := CAR optional
NOT functionp key => error "listSort: last arg must be a function"
mergeSort(pred,key,list,LENGTH list)
-- non-destructive merge sort using NOT GGREATERP as predicate
MSORT list == listSort(function GLESSEQP, COPY_-LIST list)
-- destructive merge sort using NOT GGREATERP as predicate
NMSORT list == listSort(function GLESSEQP, list)
-- non-destructive merge sort using ?ORDER as predicate
orderList l == listSort(function _?ORDER, COPY_-LIST l)
-- dummy defn until clean-up
-- order l == orderList l
mergeInPlace(f,g,p,q) ==
-- merge the two sorted lists p and q
if NULL p then return p
if NULL q then return q
if FUNCALL(f,FUNCALL(g, QCAR p),FUNCALL(g, QCAR q))
then (r := t := p; p := QCDR p)
else (r := t := q; q := QCDR q)
while not NULL p and not NULL q repeat
if FUNCALL(f,FUNCALL(g,QCAR p),FUNCALL(g,QCAR q))
then (QRPLACD(t,p); t := p; p := QCDR p)
else (QRPLACD(t,q); t := q; q := QCDR q)
if NULL p then QRPLACD(t,q) else QRPLACD(t,p)
r
mergeSort(f,g,p,n) ==
if EQ(n,2) and FUNCALL(f,FUNCALL(g,QCADR p),FUNCALL(g,QCAR p)) then
t := p
p := QCDR p
QRPLACD(p,t)
QRPLACD(t,NIL)
if QSLESSP(n,3) then return p
-- split the list p into p and q of equal length
l := QSQUOTIENT(n,2)
t := p
for i in 1..l-1 repeat t := QCDR t
q := rest t
QRPLACD(t,NIL)
p := mergeSort(f,g,p,l)
q := mergeSort(f,g,q,QSDIFFERENCE(n,l))
mergeInPlace(f,g,p,q)
--% Throwing with glorious highlighting (maybe)
spadThrow() ==
if $interpOnly and $mapName then
putHist($mapName,'localModemap, nil, $e)
THROW("SPAD__READER",nil)
spadThrowBrightly x ==
sayBrightly x
spadThrow()
--% Type Formatting Without Abbreviation
formatUnabbreviatedSig sig ==
null sig => ['"() -> ()"]
[target,:args] := dollarPercentTran sig
target := formatUnabbreviated target
null args => ['"() -> ",:target]
null rest args => [:formatUnabbreviated QCAR args,'" -> ",:target]
args := formatUnabbreviatedTuple args
['"(",:args,'") -> ",:target]
formatUnabbreviatedTuple t ==
-- t is a list of types
null t => t
atom t => [t]
t0 := formatUnabbreviated QCAR t
null rest t => t0
[:t0,'",",:formatUnabbreviatedTuple QCDR t]
formatUnabbreviated t ==
atom t =>
[t]
null t =>
['"()"]
t is [p,sel,arg] and p = ":" =>
[sel,'": ",:formatUnabbreviated arg]
t is ['Union,:args] =>
['Union,'"(",:formatUnabbreviatedTuple args,'")"]
t is ['Mapping,:args] =>
formatUnabbreviatedSig args
t is ['Record,:args] =>
['Record,'"(",:formatUnabbreviatedTuple args,'")"]
t is [arg] =>
t
t is [arg,arg1] =>
[arg,'" ",:formatUnabbreviated arg1]
t is [arg,:args] =>
[arg,'"(",:formatUnabbreviatedTuple args,'")"]
t
sublisNQ(al,e) ==
atom al => e
fn(al,e) where fn(al,e) ==
atom e =>
for x in al repeat
EQ(first x,e) => return (e := rest x)
e
EQ(a := first e,'QUOTE) => e
u := fn(al,a)
v := fn(al,rest e)
EQ(a,u) and EQ(rest e,v) => e
[u,:v]
-- function for turning strings in tex format
str2Outform s ==
parse := ncParseFromString s or systemError '"String for TeX will not parse"
parse2Outform parse
parse2Outform x ==
x is [op,:argl] =>
nargl := [parse2Outform y for y in argl]
op = 'construct => ['BRACKET,['ARGLST,:[parse2Outform y for y in argl]]]
op = 'brace and nargl is [[BRACKET,:r]] => ['BRACE,:r]
[op,:nargl]
x
str2Tex s ==
outf := str2Outform s
val := coerceInt(objNew(wrap outf, '(OutputForm)), '(TexFormat))
val := objValUnwrap val
CAR val.1
opOf: %Thing -> %Thing
opOf x ==
atom x => x
first x
getProplist: (%Thing,%List) -> %List
search: (%Thing,%List) -> %List
searchCurrentEnv: (%Thing,%List) -> %List
searchTailEnv: (%Thing,%List) -> %List
getProplist(x,E) ==
not atom x => getProplist(first x,E)
u:= search(x,E) => u
--$InteractiveMode => nil
--$InteractiveMode and (u:= search(x,$InteractiveFrame)) => u
(pl:=search(x,$CategoryFrame)) =>
pl
-- (pl:=PROPLIST x) => pl
-- Above line commented out JHD/BMT 2.Aug.90
search(x,e is [curEnv,:tailEnv]) ==
searchCurrentEnv(x,curEnv) or searchTailEnv(x,tailEnv)
searchCurrentEnv(x,currentEnv) ==
for contour in currentEnv repeat
if u:= ASSQ(x,contour) then return (signal:= u)
KDR signal
searchTailEnv(x,e) ==
for env in e repeat
signal:=
for contour in env repeat
if (u:= ASSQ(x,contour)) and ASSQ("FLUID",u) then return (signal:= u)
if signal then return signal
KDR signal
augProplist(proplist,prop,val) ==
$InteractiveMode => augProplistInteractive(proplist,prop,val)
while (proplist is [[ =prop,:.],:proplist']) repeat proplist:= proplist'
val=(u:= LASSOC(prop,proplist)) => proplist
null val =>
null u => proplist
DELLASOS(prop,proplist)
[[prop,:val],:proplist]
augProplistOf(var,prop,val,e) ==
proplist:= getProplist(var,e)
semchkProplist(var,proplist,prop,val)
augProplist(proplist,prop,val)
semchkProplist(x,proplist,prop,val) ==
prop="isLiteral" =>
LASSOC("value",proplist) or LASSOC("mode",proplist) => warnLiteral x
MEMQ(prop,'(mode value)) =>
LASSOC("isLiteral",proplist) => warnLiteral x
addBinding(var,proplist,e is [[curContour,:tailContour],:tailEnv]) ==
EQ(proplist,getProplist(var,e)) => e
$InteractiveMode => addBindingInteractive(var,proplist,e)
if curContour is [[ =var,:.],:.] then curContour:= rest curContour
--Previous line should save some space
[[[lx,:curContour],:tailContour],:tailEnv] where lx:= [var,:proplist]
position(x,l) ==
posn(x,l,0) where
posn(x,l,n) ==
null l => -1
x=first l => n
posn(x,rest l,n+1)
insert(x,y) ==
member(x,y) => y
[x,:y]
after(u,v) ==
r:= u
for x in u for y in v repeat r:= rest r
r
$blank := char ('_ )
trimString s ==
leftTrim rightTrim s
leftTrim s ==
k := MAXINDEX s
k < 0 => s
s.0 = $blank =>
for i in 0..k while s.i = $blank repeat (j := i)
SUBSTRING(s,j + 1,nil)
s
rightTrim s == -- assumed a non-empty string
k := MAXINDEX s
k < 0 => s
s.k = $blank =>
for i in k..0 by -1 while s.i = $blank repeat (j := i)
SUBSTRING(s,0,j)
s
pp x ==
PRETTYPRINT x
x
pr x ==
F_,PRINT_-ONE x
nil
quickAnd(a,b) ==
a = true => b
b = true => a
a = false or b = false => false
simpBool ['AND,a,b]
quickOr(a,b) ==
a = true or b = true => true
b = false => a
a = false => b
simpCatPredicate simpBool ['OR,a,b]
intern x ==
STRINGP x =>
DIGITP x.0 => string2Integer x
INTERN x
x
isDomain a ==
PAIRP a and VECP(CAR a) and
member(CAR(a).0, $domainTypeTokens)
-- variables used by browser
$htHash := MAKE_-HASH_-TABLE()
$glossHash := MAKE_-HASH_-TABLE()
$lispHash := MAKE_-HASH_-TABLE()
$sysHash := MAKE_-HASH_-TABLE()
$htSystemCommands := '(
(boot . development) clear display (fin . development) edit help
frame history load quit read set show synonym system
trace what )
$currentSysList := [opOf x for x in $htSystemCommands] --see ht-root
$outStream := nil
$recheckingFlag := false --see transformAndRecheckComments
$exposeFlag := false --if true, messages go to $outStream
$exposeFlagHeading := false --see htcheck.boot
$checkingXmptex? := false --see htcheck.boot
$exposeDocHeading:= nil --see htcheck.boot
$charPlus := char '_+
$charBlank:= (char '_ )
$charLbrace:= char '_{
$charRbrace:= char '_}
$charBack := char '_\
$charDash := char '_-
$charTab := CODE_-CHAR(9)
$charNewline := CODE_-CHAR(10)
$charFauxNewline := CODE_-CHAR(25)
$stringNewline := PNAME CODE_-CHAR(10)
$stringFauxNewline := PNAME CODE_-CHAR(25)
$charExclusions := [char 'a, char 'A]
$charQuote := char '_'
$charSemiColon := char '_;
$charComma := char '_,
$charPeriod := char '_.
$checkPrenAlist := [[char '_(,:char '_)],[char '_{,:char '_}],[char '_[,:char '_]]]
$charEscapeList:= [char '_%,char '_#,$charBack]
$charIdentifierEndings := [char '__, char '_!, char '_?]
$charSplitList := [$charComma,$charPeriod,char '_[, char '_],$charLbrace, $charRbrace, char '_(, char '_), char '_$, char '_%]
$charDelimiters := [$charBlank, char '_(, char '_), $charBack]
$HTspadmacros := '("\spadtype" "\spadcommand" "\spadop" "\spadfun" "\spadatt" "\spadsyscom" "\spad" "\s")
$HTmacs := [
['"\beginmenu",$charRbrace,'"menu",$charLbrace,'"\begin"],
['"\endmenu",$charRbrace,'"menu",$charLbrace,'"\end"],
['"\beginitems",$charRbrace,'"items",$charLbrace,'"\begin"],
['"\enditems",$charRbrace,'"items",$charLbrace,'"\end"],
['"\beginscroll",$charRbrace,'"scroll",$charLbrace,'"\begin"],
['"\endscroll",$charRbrace,'"scroll",$charLbrace,'"\end"]]
$HTlinks := '(
"\downlink"
"\menulink"
"\menudownlink"
"\menuwindowlink"
"\menumemolink")
$HTlisplinks := '(
"\lispdownlink"
"\menulispdownlink"
"\menulispwindowlink"
"\menulispmemolink"
"\lispwindowlink"
"\lispmemolink")
$beginEndList := '(
"page"
"items"
"menu"
"scroll"
"verbatim"
"detail")
isDefaultPackageName x == (s := PNAME x).(MAXINDEX s) = char '_&
-- gensym utils
charDigitVal c ==
digits := '"0123456789"
n := -1
for i in 0..#digits-1 while n < 0 repeat
if c = digits.i then n := i
n < 0 => error '"Character is not a digit"
n
gensymInt g ==
not GENSYMP g => error '"Need a GENSYM"
p := PNAME g
n := 0
for i in 2..#p-1 repeat n := 10 * n + charDigitVal p.i
n
++ Returns a newly allocated domain shell (a simple vector) of length `n'.
newShell: %Short -> SIMPLE_-ARRAY
newShell n ==
MAKE_-ARRAY(n,KEYWORD::INITIAL_-ELEMENT,nil)
++ fetchs the item in the nth entry of a domain shell.
getShellEntry: (%Shell,%Short) -> %Thing
getShellEntry(s,i) ==
SVREF(s,i)
++ sets the nth nth entry of a domain shell to an item.
setShellEntry: (%Shell,%Short,%Thing) -> %Thing
setShellEntry(s,i,t) ==
SETF(SVREF(s,i),t)
-- Push into the BOOT package when invoked in batch mode.
AxiomCore::$sysScope := '"BOOT"
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