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-- Copyright (c) 1991-2002, The Numerical ALgorithms Group Ltd.
-- All rights reserved.
-- Copyright (C) 2007-2012, 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 c_-util
namespace BOOT
module i_-util
--% The function for making prompts
inputPrompt str ==
-- replaces older INPUT-PROMPT
(x := $SCREENSIZE()) isnt [.,:.] => nil
p := first(x) - 2
y := $OLDLINE
SETQ($OLDLINE,nil)
y => _$SHOWLINE(strconc(str,EBCDIC 19,y),p)
0 = # str => nil
_$SHOWLINE(strconc(str,EBCDIC 19),p)
protectedPrompt(:p) ==
[str,:br] := p
0 = # str => inputPrompt str
msg := EBCDIC 29 -- start of field
msg :=
if br then strconc(msg,EBCDIC 232) -- bright write protect
else strconc(msg,EBCDIC 96) -- write protect
msg := strconc(msg,str,EBCDIC 29,EBCDIC 64) -- unprotect again
inputPrompt msg
MKPROMPT() ==
$inputPromptType = 'none => '""
$inputPromptType = 'plain => '"-> "
$inputPromptType = 'step =>
strconc('"(",toString $IOindex,'") -> ")
$inputPromptType = 'frame =>
strconc(STRINGIMAGE $interpreterFrameName,
'" (",toString $IOindex,'") -> ")
strconc(STRINGIMAGE $interpreterFrameName,
'" [", subString(CURRENTTIME(),8),'"] [",
toString $IOindex, '"] -> ")
printPrompt(flush? == false) ==
writeString(MKPROMPT(), $OutputStream)
if flush? then
flushOutput $OutputStream
++ Return the name of a text editor, if possible.
textEditor() ==
prog := getEnv '"EDITOR" => prog
# $EditorProgram ~= 0 => $EditorProgram
%hasFeature KEYWORD::WIN32 => '"notepad"
throwKeyedMsg("S2IZ0091",nil)
--% Miscellaneous
$ZeroVecCache := nil
Zeros n ==
#$ZeroVecCache = n => $ZeroVecCache
$ZeroVecCache := newVector n
for i in 0..n-1 repeat
$ZeroVecCache.i := 0
$ZeroVecCache
LZeros n ==
n < 1 => nil
l := [0]
for i in 2..n repeat l := [0, :l]
l
-- bpi2FunctionName x ==
-- s:= BPINAME x => s
-- x
-- subrToName x == BPINAME x
$variableNumberAlist := nil
variableNumber(x) ==
p := objectAssoc(x, $variableNumberAlist)
null p =>
$variableNumberAlist := [[x,:0], :$variableNumberAlist]
0
p.rest := 1+rest p
rest p
newType? t == nil
-- functions used at run-time which were formerly in the compiler files
Undef(:u) ==
u':= last u
[[domain,slot],op,sig]:= u'
domain':=eval mkEvalable domain
not sameObject?(first domain'.slot, function Undef) =>
-- OK - thefunction is now defined
[:u'',.]:=u
if $reportBottomUpFlag then
sayMessage concat ['" Retrospective determination of slot",'"%b",
slot,'"%d",'"of",'"%b",:prefix2String domain,'"%d"]
apply(first domain'.slot,[:u'',rest domain'.slot])
throwKeyedMsg("S2IF0008",[formatOpSignature(op,sig),domain])
makeInitialModemapFrame() ==
copyTree $InitialModemapFrame
isCapitalWord x ==
(y := PNAME x) and and/[upperCase? y.i for i in 0..maxIndex y]
mkPredList listOfEntries ==
[['%ieq,['%head,"#1"],i] for arg in listOfEntries for i in 0..]
--%
++ Validate variable name `var', or abort analysis.
validateVariableNameOrElse var ==
not ident? var => throwKeyedMsg("S2IS0016",[STRINGIMAGE var])
var in '(% %%) => throwKeyedMsg("S2IS0050",[var])
true
--%
flattenCOND body ==
-- transforms nested conditional clauses to flat ones, if possible
body isnt ['%when,:.] => body
['%when,:extractCONDClauses body]
extractCONDClauses clauses ==
-- extracts nested conditional clauses into a flat structure
clauses is ['%when, [pred1,:act1],:restClauses] =>
if act1 is [['PROGN,:acts]] then act1 := acts
restClauses is [['%otherwise,restCond]] =>
[[pred1,:act1],:extractCONDClauses restCond]
[[pred1,:act1],:restClauses]
[['%otherwise,clauses]]
++ Returns true if symbol `id' is either a local variable
++ or an iterator variable.
isLocallyBound id ==
symbolMember?(id,$localVars) or symbolMember?(id,$iteratorVars)
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