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\documentclass{article}
\usepackage{axiom}
\title{\File{src/interp/g-error.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>>
import '"diagnostics"
import '"g-util"
)package "BOOT"
-- This file contains the error printing code used in BOOT and SPAD.
-- While SPAD only calls "error" (which is then labeled as an algebra
-- error, BOOT calls "userError" and "systemError" when a problem is
-- found.
--
-- The variable $BreakMode is set using the system command )set breakmode
-- and can have one of the values:
-- break -- always enter a lisp break when an error is signalled
-- nobreak -- do not enter lisp break mode
-- query -- ask the user if break mode should be entered
$SystemError == 'SystemError
$UserError == 'UserError
$AlgebraError =='AlgebraError
-- REDERR is used in BFLOAT LISP, should be a macro
-- REDERR msg == error msg
-- BFLERRMSG func ==
-- errorSupervisor($AlgebraError,STRCONC(
-- '"BigFloat: invalid argument to ",func))
argumentDataError(argnum, condit, funname) ==
msg := ['"The test",:bright pred2English condit,'"evaluates to",
:bright '"false",'%l,'" for argument",:bright argnum,_
'"to the function",:bright funname,'"and this indicates",'%l,_
'" that the argument is not appropriate."]
errorSupervisor($AlgebraError,msg)
queryUser msg ==
-- display message and return reply
sayBrightly msg
read_-line _*TERMINAL_-IO_*
-- errorSupervisor is the old style error message trapper
errorSupervisor(errorType,errorMsg) ==
errorSupervisor1(errorType,errorMsg,$BreakMode)
errorSupervisor1(errorType,errorMsg,$BreakMode) ==
$cclSystem and $BreakMode = 'trapNumerics =>
THROW('trapNumerics,$numericFailure)
BUMPERRORCOUNT "semantic"
errorLabel :=
errorType = $SystemError => '"System error"
errorType = $UserError => '"Apparent user error"
errorType = $AlgebraError =>
'"Error detected within library code"
STRINGP errorType => errorType
'"Error with unknown classification"
msg :=
errorMsg is ['mathprint, :.] => errorMsg
not PAIRP errorMsg => ['" ", errorMsg]
splitmsg := true
if member('%b,errorMsg) then splitmsg := nil
else if member('%d,errorMsg) then splitmsg := nil
else if member('%l,errorMsg) then splitmsg := nil
splitmsg => CDR [:['%l,'" ",u] for u in errorMsg]
['" ",:errorMsg]
sayErrorly(errorLabel, msg)
handleLispBreakLoop($BreakMode)
handleLispBreakLoop($BreakMode) ==
TERPRI()
-- The next line is to try to deal with some reported cases of unwanted
-- backtraces appearing, MCD.
ENABLE_-BACKTRACE(nil)
$BreakMode = 'break =>
sayBrightly '" "
BREAK()
$BreakMode = 'query =>
gotIt := nil
while not gotIt repeat
gotIt := true
msgQ :=
$cclSystem =>
['%l,'" You have two options. Enter:",'%l,_
'" ",:bright '"top ",'" to return to top level, or",'%l,_
'" ",:bright '"break ",'" to enter a LISP break loop.",'%l,_
'%l,'" Please enter your choice now:"]
['%l,'" You have three options. Enter:",'%l,_
'" ",:bright '"continue",'" to continue processing,",'%l,_
'" ",:bright '"top ",'" to return to top level, or",'%l,_
'" ",:bright '"break ",'" to enter a LISP break loop.",'%l,_
'%l,'" Please enter your choice now:"]
x := STRING2ID_-N(queryUser msgQ,1)
x :=
$cclSystem =>
selectOptionLC(x,'(top break),NIL)
selectOptionLC(x,'(top break continue),NIL)
null x =>
sayBrightly bright '" That was not one of your choices!"
gotIt := NIL
x = 'top => returnToTopLevel()
x = 'break =>
$BreakMode := 'break
if not $cclSystem then
sayBrightly ['" Enter",:bright '":C",
'"when you are ready to continue processing where you ",'%l,_
'" interrupted the system, enter",:bright '"(TOP)",_
'"when you wish to return",'%l,'" to top level.",'%l,'%l]
BREAK()
sayBrightly
'" Processing will continue where it was interrupted."
THROW('SPAD__READER, nil)
$BreakMode = 'resume =>
returnToReader()
returnToTopLevel()
TOP() == returnToTopLevel()
returnToTopLevel() ==
SETQ(CHR, "ENDOFLINECHR")
SETQ(TOK, 'END__UNIT)
TOPLEVEL()
returnToReader() ==
^$ReadingFile => returnToTopLevel()
sayBrightly ['" Continuing to read the file...", '%l]
THROW('SPAD__READER, nil)
sayErrorly(errorLabel, msg) ==
$saturn => saturnSayErrorly(errorLabel, msg)
sayErrorly1(errorLabel, msg)
saturnSayErrorly(errorLabel, msg) ==
SETQ(_*STANDARD_-OUTPUT_*, $texOutputStream)
old := pushSatOutput("line")
sayString '"\bgroup\color{red}"
sayString '"\begin{verbatim}"
sayErrorly1(errorLabel, msg)
sayString '"\end{verbatim}"
sayString '"\egroup"
popSatOutput(old)
sayErrorly1(errorLabel, msg) ==
sayBrightly '" "
if $testingSystem then sayMSG $testingErrorPrefix
sayBrightly ['" >> ",errorLabel,'":"]
m := msg
msg is ['mathprint, mathexpr] =>
mathprint mathexpr
sayBrightly msg
-- systemError is being phased out. Please use keyedSystemError.
systemError(:x) == errorSupervisor($SystemError,IFCAR x)
-- unexpectedSystemError() ==
-- systemError '"Oh, no. Unexpected internal error."
userError x == errorSupervisor($UserError,x)
error(x) == errorSupervisor($AlgebraError,x)
IdentityError(op) ==
error(["No identity element for reduce of empty list using operation",op])
throwMessage(:msg) ==
if $compilingMap then clearCache $mapName
msg' := mkMessage concatList msg
sayMSG msg'
if $printMsgsToFile then sayMSG2File msg'
spadThrow()
@
\eject
\begin{thebibliography}{99}
\bibitem{1} nothing
\end{thebibliography}
\end{document}
|
