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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"
)package "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.
FORCE_-OUTPUT()
not $SpadServer or not IS_-CONSOLE stream =>
read_-line(stream)
IN_-STREAM: fluid := stream
_*EOF_*: fluid := NIL
line :=
while not $EndServerSession and not _*EOF_* repeat
if $NeedToSignalSessionManager then
sockSendInt($SessionManager, $EndOfOutput)
$NeedToSignalSessionManager := false
action := serverSwitch()
action = $CallInterp =>
l := read_-line(stream)
$NeedToSignalSessionManager := true
return 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
stringBuf := MAKE_-STRING $sockBufferLength
sockGetString($MenuServer, stringBuf, $sockBufferLength)
form := unescapeStringsInForm READ_-FROM_-STRING stringBuf
protectedEVAL form
action = $QuietSpadCommand =>
$NeedToSignalSessionManager := true
executeQuietCommand()
action = $SpadCommand =>
$NeedToSignalSessionManager := true
stringBuf := MAKE_-STRING 512
sockGetString($MenuServer, stringBuf, 512)
CATCH('coerceFailure,CATCH('top__level, CATCH('SPAD__READER,
parseAndInterpret stringBuf)))
PRINC MKPROMPT()
FINISH_-OUTPUT()
action = $NonSmanSession =>
$SpadServer := nil
action = $KillLispSystem =>
coreQuit() -- ??? should be coreQuit errorCount()
NIL
line => line
""
parseAndInterpret str ==
$InteractiveMode :fluid := true
$BOOT: fluid := NIL
$SPAD: fluid := true
$e:fluid := $InteractiveFrame
ncParseAndInterpretString str
oldParseAndInterpret str ==
tree := string2SpadTree str
tree => processInteractive(parseTransform postTransform tree, NIL)
NIL
executeQuietCommand() ==
$QuietCommand: fluid := true
stringBuf := MAKE_-STRING 512
sockGetString($MenuServer, stringBuf, 512)
CATCH('coerceFailure,CATCH('top__level, CATCH('SPAD__READER,
parseAndInterpret stringBuf)))
-- Includued for compatability with old-parser systems
serverLoop() ==
IN_-STREAM: fluid := $InputStream
_*EOF_*: fluid := NIL
while not $EndServerSession and not _*EOF_* repeat
if $Prompt then (PRINC MKPROMPT(); FINISH_-OUTPUT())
$Prompt := NIL
action := serverSwitch()
action = $CallInterp =>
CATCH('coerceFailure,CATCH('top__level, CATCH('SPAD__READER,
parseAndInterpret read_-line($InputStream) )))
PRINC MKPROMPT()
FINISH_-OUTPUT()
sockSendInt($SessionManager, $EndOfOutput)
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 = $LispCommand =>
stringBuf := MAKE_-STRING 512
sockGetString($MenuServer, stringBuf, 512)
form := unescapeStringsInForm READ_-FROM_-STRING stringBuf
EVAL form
action = $QuietSpadCommand =>
executeQuietCommand()
action = $SpadCommand =>
stringBuf := MAKE_-STRING 512
sockGetString($MenuServer, stringBuf, 512)
CATCH('coerceFailure,CATCH('top__level, CATCH('SPAD__READER,
parseAndInterpret stringBuf)))
PRINC MKPROMPT()
FINISH_-OUTPUT()
sockSendInt($SessionManager, $EndOfOutput)
NIL
if _*EOF_* then $Prompt := true
NIL
parseAndEvalToHypertex str ==
lines := parseAndEvalToStringForHypertex str
len := LENGTH lines
sockSendInt($MenuServer, len)
for s in lines repeat
sockSendString($MenuServer, s)
parseAndEvalToString str ==
$collectOutput:local := true
$outputLines: local := nil
$IOindex: local := nil
v := CATCH('SPAD__READER, CATCH('top__level, parseAndEvalStr str))
v = 'restart => ['"error"]
NREVERSE $outputLines
parseAndEvalToStringForHypertex str ==
$collectOutput:local := true
$outputLines: local := nil
v := CATCH('SPAD__READER, CATCH('top__level, parseAndEvalStr str))
v = 'restart => ['"error"]
NREVERSE $outputLines
parseAndEvalToStringEqNum str ==
$collectOutput:local := true
$outputLines: local := nil
v := CATCH('SPAD__READER, CATCH('top__level, parseAndEvalStr str))
v = 'restart => ['"error"]
NREVERSE $outputLines
parseAndInterpToString str ==
v := applyWithOutputToString('parseAndEvalStr, [str])
breakIntoLines CDR v
parseAndEvalStr string ==
$InteractiveMode :fluid := true
$BOOT: fluid := NIL
$SPAD: fluid := true
$e:fluid := $InteractiveFrame
parseAndEvalStr1 string
parseAndEvalStr1 string ==
string.0 = char '")" =>
doSystemCommand SUBSEQ(string, 1)
processInteractive(ncParseFromString string, NIL)
protectedEVAL x ==
error := true
val := NIL
UNWIND_-PROTECT((val := EVAL x; error := NIL),
error => (resetStackLimits(); sendHTErrorSignal()))
val
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