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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 diagnostics
import g_-util
namespace 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
$ReadingFile := false
-- REDERR is used in BFLOAT LISP, should be a macro
-- REDERR msg == error msg
-- BFLERRMSG func ==
-- errorSupervisor($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
line := readLine $InputStream
line ~= %nothing => line
nil
-- errorSupervisor is the old style error message trapper
errorSupervisor(errorType,errorMsg) ==
errorSupervisor1(errorType,errorMsg,$BreakMode)
needsToSplitMessage msg ==
member("%b",msg) or member('"%b",msg) => false
member("%d",msg) or member('"%d",msg) => false
member("%l",msg) or member('"%l",msg) => false
true
errorSupervisor1(errorType,errorMsg,$BreakMode) ==
BUMPERRORCOUNT "semantic"
errorLabel :=
errorType = $SystemError => '"System error"
errorType = $UserError => '"Apparent user error"
errorType = $AlgebraError =>
'"Error detected within library code"
string? errorType => errorType
'"Error with unknown classification"
msg :=
errorMsg is ['mathprint, :.] => errorMsg
errorMsg isnt [.,:.] => ['" ", errorMsg]
needsToSplitMessage errorMsg => rest [:['"%l",'" ",u] for u in errorMsg]
['" ",:errorMsg]
sayErrorly(errorLabel, msg)
handleLispBreakLoop($BreakMode)
enterBreak() ==
SETQ(_*PRINT_-ARRAY_*,true)
SETQ(_*PRINT_-CIRCLE_*,true)
SETQ(_*PRINT_-LENGTH_*,6)
SETQ(_*PRINT_-READABLY_*,false)
BREAK()
handleLispBreakLoop($BreakMode) ==
finishLine $OutputStream
$BreakMode = 'break =>
sayBrightly '" "
enterBreak()
$BreakMode = 'query =>
gotIt := nil
while not gotIt repeat
gotIt := true
msgQ :=
['"%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 := selectOptionLC(x,'(top break continue),nil)
null x =>
sayBrightly bright '" That was not one of your choices!"
gotIt := nil
x = 'top => returnToTopLevel()
x = 'break =>
$BreakMode := 'break
sayBrightly ['" Enter",:bright '":C",
'"when you are ready to continue processing where you ",'"%l",_
'" interrupted the system, enter",:bright '"(TOP)",_
'"when you wish to return",'"%l",'" to top level.",'"%l",'"%l"]
enterBreak()
sayBrightly
'" Processing will continue where it was interrupted."
THROW($SpadReaderTag, nil)
$BreakMode = 'resume or $ReadingFile =>
returnToReader()
returnToTopLevel()
TOP() == returnToTopLevel()
returnToTopLevel() ==
THROW($intTopLevel,'restart)
returnToReader() ==
not $ReadingFile => returnToTopLevel()
sayBrightly ['" Continuing to read the file...", '"%l"]
THROW($SpadReaderTag, nil)
sayErrorly(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()
++ Error handler for Lisp systems that support Common Lisp conditions.
++ We don't want users to get dropped into the Lisp debugger.
systemErrorHandler c ==
$NeedToSignalSessionManager := true
$BreakMode = "validate" =>
systemError ERROR_-FORMAT('"~a",[c])
not $inLispVM and $BreakMode in '(nobreak query resume) =>
TYPEP(c,'CONTROL_-ERROR) => keyedSystemError('S2GE0020,nil)
LET(($inLispVM true)(), systemError ERROR_-FORMAT('"~a",[c]))
$BreakMode = "letPrint2" =>
$BreakMode := nil
THROW("letPrint2",nil)
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