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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 sys_-macros
namespace BOOT
-- Scratchpad-II server
-- Assoc list of interpreter frame names and unique integer identifiers
$frameAlist := nil
$frameNumber := 0
$currentFrameNum := 0
$EndServerSession := false
$NeedToSignalSessionManager := false
$sockBufferLength := 9217
serverReadLine(stream) ==
-- used in place of READ-LINE in a scratchpad server system.
not $SpadServer or not ioTerminal? stream =>
line := readLine stream
line ~= %nothing => line
nil
line :=
while not $EndServerSession and line ~= %nothing repeat
if $NeedToSignalSessionManager then
sockSendInt($SessionManager, $EndOfOutput)
$NeedToSignalSessionManager := false
action := serverSwitch()
action = $CallInterp =>
l := readLine stream
$NeedToSignalSessionManager := true
leave l
action = $CreateFrame =>
frameName := gensym('"frame")
addNewInterpreterFrame(frameName)
$frameAlist := [[$frameNumber,:frameName], :$frameAlist]
$currentFrameNum := $frameNumber
sockSendInt($SessionManager, $frameNumber)
$frameNumber := $frameNumber + 1
sockSendString($SessionManager, MKPROMPT())
action = $SwitchFrames =>
$currentFrameNum := sockGetInt($SessionManager)
currentFrame := LASSOC($currentFrameNum, $frameAlist)
changeToNamedInterpreterFrame currentFrame
action = $EndSession =>
$EndServerSession := true
action = $LispCommand =>
$NeedToSignalSessionManager := true
buf := sockGetString $MenuServer
form := unescapeStringsInForm readLispFromString buf
protectedEVAL form
action = $QuietSpadCommand =>
$NeedToSignalSessionManager := true
executeQuietCommand()
action = $SpadCommand =>
$NeedToSignalSessionManager := true
stringBuf := sockGetString $MenuServer
CATCH('coerceFailure,CATCH($intTopLevel, CATCH($SpadReaderTag,
parseAndInterpret stringBuf)))
not $leanMode and printPrompt()
action = $NonSmanSession =>
$SpadServer := nil
action = $KillLispSystem =>
coreQuit()
nil
line ~= %nothing and line ~= nil => line
""
parseAndInterpret str ==
$InteractiveMode : local := true
$e: local := $InteractiveFrame
ncParseAndInterpretString str
executeQuietCommand() ==
$QuietCommand: local := true
stringBuf := sockGetString $MenuServer
CATCH('coerceFailure,CATCH($intTopLevel, CATCH($SpadReaderTag,
parseAndInterpret stringBuf)))
parseAndEvalToHypertex str ==
lines := parseAndEvalToStringForHypertex str
len := # lines
sockSendInt($MenuServer, len)
for s in lines repeat
sockSendString($MenuServer, s)
parseAndEvalToString str ==
$collectOutput:local := true
$outputLines: local := nil
$IOindex: local := nil
v := CATCH($SpadReaderTag, CATCH($intTopLevel, parseAndEvalStr str))
v = 'restart => ['"error"]
reverse! $outputLines
parseAndEvalToStringForHypertex str ==
$collectOutput:local := true
$outputLines: local := nil
v := CATCH($SpadReaderTag, CATCH($intTopLevel, parseAndEvalStr str))
v = 'restart => ['"error"]
reverse! $outputLines
parseAndEvalToStringEqNum str ==
$collectOutput:local := true
$outputLines: local := nil
v := CATCH($SpadReaderTag, CATCH($intTopLevel, parseAndEvalStr str))
v = 'restart => ['"error"]
reverse! $outputLines
parseAndInterpToString str ==
v := applyWithOutputToString('parseAndEvalStr, [str])
breakIntoLines rest v
parseAndEvalStr string ==
$InteractiveMode: local := true
$e: local := $InteractiveFrame
parseAndEvalStr1 string
parseAndEvalStr1 string ==
string.0 = char ")" =>
doSystemCommand subSequence(string, 1)
processInteractive(ncParseFromString string, nil)
protectedEVAL x ==
error := true
val := nil
try
val := eval x
error := false
finally (error => (resetStackLimits(); sendHTErrorSignal()))
val
|
