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gparser.zil
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gparser.zil
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"Generic PARSER file for
The ZORK Trilogy
started on 7/28/83 by MARC"
;"WHICH and TRAP retrofixes installed"
"Parser global variable convention: All parser globals will
begin with 'P-'. Local variables are not restricted in any
way.
"
<SETG SIBREAKS ".,\"">
<GLOBAL PRSA <>>
<GLOBAL PRSI <>>
<GLOBAL PRSO <>>
<GLOBAL P-TABLE 0>
<GLOBAL P-ONEOBJ 0>
<GLOBAL P-SYNTAX 0>
<GLOBAL P-CCTBL <TABLE 0 0 0 0>>
;"pointers used by CLAUSE-COPY (source/destination beginning/end pointers)"
<CONSTANT CC-SBPTR 0>
<CONSTANT CC-SEPTR 1>
<CONSTANT CC-DBPTR 2>
<CONSTANT CC-DEPTR 3>
<GLOBAL P-LEN 0>
<GLOBAL P-DIR 0>
<GLOBAL HERE 0>
<GLOBAL WINNER 0>
<GLOBAL P-LEXV
<ITABLE 59 (LEXV) 0 #BYTE 0 #BYTE 0> ;<ITABLE BYTE 120>>
<GLOBAL AGAIN-LEXV
<ITABLE 59 (LEXV) 0 #BYTE 0 #BYTE 0> ;<ITABLE BYTE 120>>
<GLOBAL RESERVE-LEXV
<ITABLE 59 (LEXV) 0 #BYTE 0 #BYTE 0> ;<ITABLE BYTE 120>>
<GLOBAL RESERVE-PTR <>>
;"INBUF - Input buffer for READ"
<GLOBAL P-INBUF
<ITABLE 120 (BYTE LENGTH) 0>
;<ITABLE BYTE 60>>
<GLOBAL OOPS-INBUF
<ITABLE 120 (BYTE LENGTH) 0>
;<ITABLE BYTE 60>>
<GLOBAL OOPS-TABLE <TABLE <> <> <> <>>>
<CONSTANT O-PTR 0> "word pointer to unknown token in P-LEXV"
<CONSTANT O-START 1> "word pointer to sentence start in P-LEXV"
<CONSTANT O-LENGTH 2> "byte length of unparsed tokens in P-LEXV"
<CONSTANT O-END 3> "byte pointer to first free byte in OOPS-INBUF"
;"Parse-cont variable"
<GLOBAL P-CONT <>>
<GLOBAL P-IT-OBJECT <>>
;<GLOBAL LAST-PSEUDO-LOC <>>
;"Orphan flag"
<GLOBAL P-OFLAG <>>
<GLOBAL P-MERGED <>>
<GLOBAL P-ACLAUSE <>>
<GLOBAL P-ANAM <>>
<GLOBAL P-AADJ <>>
;"Parser variables and temporaries"
;"Byte offset to # of entries in LEXV"
<CONSTANT P-LEXWORDS 1> ;"Word offset to start of LEXV entries"
<CONSTANT P-LEXSTART 1> ;"Number of words per LEXV entry"
<CONSTANT P-LEXELEN 2>
<CONSTANT P-WORDLEN 4> ;"Offset to parts of speech byte"
<CONSTANT P-PSOFF 4> ;"Offset to first part of speech"
<CONSTANT P-P1OFF 5> ;"First part of speech bit mask in PSOFF byte"
<CONSTANT P-P1BITS 3>
<CONSTANT P-ITBLLEN 9>
<GLOBAL P-ITBL <TABLE 0 0 0 0 0 0 0 0 0 0>>
<GLOBAL P-OTBL <TABLE 0 0 0 0 0 0 0 0 0 0>>
<GLOBAL P-VTBL <TABLE 0 0 0 0>>
<GLOBAL P-OVTBL <TABLE 0 #BYTE 0 #BYTE 0>>
<GLOBAL P-NCN 0>
<CONSTANT P-VERB 0>
<CONSTANT P-VERBN 1>
<CONSTANT P-PREP1 2>
<CONSTANT P-PREP1N 3>
<CONSTANT P-PREP2 4>
<CONSTANT P-PREP2N 5>
<CONSTANT P-NC1 6>
<CONSTANT P-NC1L 7>
<CONSTANT P-NC2 8>
<CONSTANT P-NC2L 9>
<GLOBAL QUOTE-FLAG <>>
<GLOBAL P-END-ON-PREP <>>
" Grovel down the input finding the verb, prepositions, and noun clauses.
If the input is <direction> or <walk> <direction>, fall out immediately
setting PRSA to ,V?WALK and PRSO to <direction>. Otherwise, perform
all required orphaning, syntax checking, and noun clause lookup."
<ROUTINE PARSER ("AUX" (PTR ,P-LEXSTART) WRD (VAL 0) (VERB <>) (OF-FLAG <>)
OWINNER OMERGED LEN (DIR <>) (NW 0) (LW 0) (CNT -1))
<REPEAT ()
<COND (<G? <SET CNT <+ .CNT 1>> ,P-ITBLLEN> <RETURN>)
(T
<COND (<NOT ,P-OFLAG>
<PUT ,P-OTBL .CNT <GET ,P-ITBL .CNT>>)>
<PUT ,P-ITBL .CNT 0>)>>
<SET OWINNER ,WINNER>
<SET OMERGED ,P-MERGED>
<SETG P-ADVERB <>>
<SETG P-MERGED <>>
<SETG P-END-ON-PREP <>>
<PUT ,P-PRSO ,P-MATCHLEN 0>
<PUT ,P-PRSI ,P-MATCHLEN 0>
<PUT ,P-BUTS ,P-MATCHLEN 0>
<COND (<AND <NOT ,QUOTE-FLAG> <N==? ,WINNER ,PLAYER>>
<SETG WINNER ,PLAYER>
<SETG HERE <META-LOC ,PLAYER>>
;<COND (<NOT <FSET? <LOC ,WINNER> ,VEHBIT>>
<SETG HERE <LOC ,WINNER>>)>
<SETG LIT <LIT? ,HERE>>)>
<COND (,RESERVE-PTR
<SET PTR ,RESERVE-PTR>
<STUFF ,RESERVE-LEXV ,P-LEXV>
<COND (<AND <NOT ,SUPER-BRIEF> <EQUAL? ,PLAYER ,WINNER>>
<CRLF>)>
<SETG RESERVE-PTR <>>
<SETG P-CONT <>>)
(,P-CONT
<SET PTR ,P-CONT>
<COND (<AND <NOT ,SUPER-BRIEF>
<EQUAL? ,PLAYER ,WINNER>
<NOT <VERB? SAY>>>
<CRLF>)>
<SETG P-CONT <>>)
(T
<SETG WINNER ,PLAYER>
<SETG QUOTE-FLAG <>>
<COND (<NOT <FSET? <LOC ,WINNER> ,VEHBIT>>
<SETG HERE <LOC ,WINNER>>)>
<SETG LIT <LIT? ,HERE>>
<COND (<NOT ,SUPER-BRIEF> <CRLF>)>
<TELL ">">
<READ ,P-INBUF ,P-LEXV>)>
<SETG P-LEN <GETB ,P-LEXV ,P-LEXWORDS>>
<COND (<ZERO? ,P-LEN> <TELL "I beg your pardon?" CR> <RFALSE>)>
<COND (<EQUAL? <SET WRD <GET ,P-LEXV .PTR>> ,W?OOPS>
<COND (<EQUAL? <GET ,P-LEXV <+ .PTR ,P-LEXELEN>>
,W?PERIOD ,W?COMMA>
<SET PTR <+ .PTR ,P-LEXELEN>>
<SETG P-LEN <- ,P-LEN 1>>)>
<COND (<NOT <G? ,P-LEN 1>>
<TELL "I can't help your clumsiness." CR>
<RFALSE>)
(<GET ,OOPS-TABLE ,O-PTR>
<COND (<AND <G? ,P-LEN 2>
<EQUAL? <GET ,P-LEXV <+ .PTR ,P-LEXELEN>>
,W?QUOTE>>
<TELL
"Sorry, you can't correct mistakes in quoted text." CR>
<RFALSE>)
(<G? ,P-LEN 2>
<TELL
"Warning: only the first word after OOPS is used." CR>)>
<PUT ,AGAIN-LEXV <GET ,OOPS-TABLE ,O-PTR>
<GET ,P-LEXV <+ .PTR ,P-LEXELEN>>>
<SETG WINNER .OWINNER> ;"maybe fix oops vs. chars.?"
<INBUF-ADD <GETB ,P-LEXV <+ <* .PTR ,P-LEXELEN> 6>>
<GETB ,P-LEXV <+ <* .PTR ,P-LEXELEN> 7>>
<+ <* <GET ,OOPS-TABLE ,O-PTR> ,P-LEXELEN> 3>>
<STUFF ,AGAIN-LEXV ,P-LEXV>
<SETG P-LEN <GETB ,P-LEXV ,P-LEXWORDS>>
<SET PTR <GET ,OOPS-TABLE ,O-START>>
<INBUF-STUFF ,OOPS-INBUF ,P-INBUF>)
(T
<PUT ,OOPS-TABLE ,O-END <>>
<TELL "There was no word to replace!" CR>
<RFALSE>)>)
(T
<COND (<NOT <EQUAL? .WRD ,W?AGAIN ,W?G>>
<SETG P-NUMBER 0>)>
<PUT ,OOPS-TABLE ,O-END <>>)>
<COND (<EQUAL? <GET ,P-LEXV .PTR> ,W?AGAIN ,W?G>
<COND (<ZERO? <GETB ,OOPS-INBUF 1>>
<TELL "Beg pardon?" CR>
<RFALSE>)
(,P-OFLAG
<TELL "It's difficult to repeat fragments." CR>
<RFALSE>)
(<NOT ,P-WON>
<TELL "That would just repeat a mistake." CR>
<RFALSE>)
(<G? ,P-LEN 1>
<COND (<OR <EQUAL? <GET ,P-LEXV <+ .PTR ,P-LEXELEN>>
,W?PERIOD ,W?COMMA ,W?THEN>
<EQUAL? <GET ,P-LEXV <+ .PTR ,P-LEXELEN>>
,W?AND>>
<SET PTR <+ .PTR <* 2 ,P-LEXELEN>>>
<PUTB ,P-LEXV ,P-LEXWORDS
<- <GETB ,P-LEXV ,P-LEXWORDS> 2>>)
(T
<TELL "I couldn't understand that sentence." CR>
<RFALSE>)>)
(T
<SET PTR <+ .PTR ,P-LEXELEN>>
<PUTB ,P-LEXV ,P-LEXWORDS
<- <GETB ,P-LEXV ,P-LEXWORDS> 1>>)>
<COND (<G? <GETB ,P-LEXV ,P-LEXWORDS> 0>
<STUFF ,P-LEXV ,RESERVE-LEXV>
<SETG RESERVE-PTR .PTR>)
(T
<SETG RESERVE-PTR <>>)>
;<SETG P-LEN <GETB ,AGAIN-LEXV ,P-LEXWORDS>>
<SETG WINNER .OWINNER>
<SETG P-MERGED .OMERGED>
<INBUF-STUFF ,OOPS-INBUF ,P-INBUF>
<STUFF ,AGAIN-LEXV ,P-LEXV>
<SET CNT -1>
<SET DIR ,AGAIN-DIR>
<REPEAT ()
<COND (<IGRTR? CNT ,P-ITBLLEN> <RETURN>)
(T <PUT ,P-ITBL .CNT <GET ,P-OTBL .CNT>>)>>)
(T
<STUFF ,P-LEXV ,AGAIN-LEXV>
<INBUF-STUFF ,P-INBUF ,OOPS-INBUF>
<PUT ,OOPS-TABLE ,O-START .PTR>
<PUT ,OOPS-TABLE ,O-LENGTH <* 4 ,P-LEN>>
<SET LEN
<* 2 <+ .PTR <* ,P-LEXELEN <GETB ,P-LEXV ,P-LEXWORDS>>>>>
<PUT ,OOPS-TABLE ,O-END <+ <GETB ,P-LEXV <- .LEN 1>>
<GETB ,P-LEXV <- .LEN 2>>>>
<SETG RESERVE-PTR <>>
<SET LEN ,P-LEN>
<SETG P-DIR <>>
<SETG P-NCN 0>
<SETG P-GETFLAGS 0>
<REPEAT ()
<COND (<L? <SETG P-LEN <- ,P-LEN 1>> 0>
<SETG QUOTE-FLAG <>>
<RETURN>)
(<OR <SET WRD <GET ,P-LEXV .PTR>>
<SET WRD <NUMBER? .PTR>>>
<COND (<ZERO? ,P-LEN> <SET NW 0>)
(T <SET NW <GET ,P-LEXV <+ .PTR ,P-LEXELEN>>>)>
<COND (<AND <EQUAL? .WRD ,W?TO>
<EQUAL? .VERB ,ACT?TELL ;,ACT?ASK>>
<SET WRD ,W?QUOTE>)
(<AND <EQUAL? .WRD ,W?THEN>
<G? ,P-LEN 0>
<NOT .VERB>
<NOT ,QUOTE-FLAG> ;"Last NOT added 7/3">
<COND (<EQUAL? .LW 0 ,W?PERIOD>
<SET WRD ,W?THE>)
(ELSE
<PUT ,P-ITBL ,P-VERB ,ACT?TELL>
<PUT ,P-ITBL ,P-VERBN 0>
<SET WRD ,W?QUOTE>)>)>
<COND (<EQUAL? .WRD ,W?THEN ,W?PERIOD ,W?QUOTE>
<COND (<EQUAL? .WRD ,W?QUOTE>
<COND (,QUOTE-FLAG
<SETG QUOTE-FLAG <>>)
(T <SETG QUOTE-FLAG T>)>)>
<OR <ZERO? ,P-LEN>
<SETG P-CONT <+ .PTR ,P-LEXELEN>>>
<PUTB ,P-LEXV ,P-LEXWORDS ,P-LEN>
<RETURN>)
(<AND <SET VAL
<WT? .WRD
,PS?DIRECTION
,P1?DIRECTION>>
<EQUAL? .VERB <> ,ACT?WALK>
<OR <EQUAL? .LEN 1>
<AND <EQUAL? .LEN 2>
<EQUAL? .VERB ,ACT?WALK>>
<AND <EQUAL? .NW
,W?THEN
,W?PERIOD
,W?QUOTE>
<NOT <L? .LEN 2>>>
<AND ,QUOTE-FLAG
<EQUAL? .LEN 2>
<EQUAL? .NW ,W?QUOTE>>
<AND <G? .LEN 2>
<EQUAL? .NW ,W?COMMA ,W?AND>>>>
<SET DIR .VAL>
<COND (<EQUAL? .NW ,W?COMMA ,W?AND>
<PUT ,P-LEXV
<+ .PTR ,P-LEXELEN>
,W?THEN>)>
<COND (<NOT <G? .LEN 2>>
<SETG QUOTE-FLAG <>>
<RETURN>)>)
(<AND <SET VAL <WT? .WRD ,PS?VERB ,P1?VERB>>
<NOT .VERB>>
<SET VERB .VAL>
<PUT ,P-ITBL ,P-VERB .VAL>
<PUT ,P-ITBL ,P-VERBN ,P-VTBL>
<PUT ,P-VTBL 0 .WRD>
<PUTB ,P-VTBL 2 <GETB ,P-LEXV
<SET CNT
<+ <* .PTR 2> 2>>>>
<PUTB ,P-VTBL 3 <GETB ,P-LEXV <+ .CNT 1>>>)
(<OR <SET VAL <WT? .WRD ,PS?PREPOSITION 0>>
<EQUAL? .WRD ,W?ALL ,W?ONE ;,W?BOTH>
<WT? .WRD ,PS?ADJECTIVE>
<WT? .WRD ,PS?OBJECT>>
<COND (<AND <G? ,P-LEN 1>
<EQUAL? .NW ,W?OF>
<ZERO? .VAL>
<NOT <EQUAL? .WRD
,W?ALL ,W?ONE ,W?A>>
;<NOT <EQUAL? .WRD ,W?BOTH>>>
<SET OF-FLAG T>)
(<AND <NOT <ZERO? .VAL>>
<OR <ZERO? ,P-LEN>
<EQUAL? .NW ,W?THEN ,W?PERIOD>>>
<SETG P-END-ON-PREP T>
<COND (<L? ,P-NCN 2>
<PUT ,P-ITBL ,P-PREP1 .VAL>
<PUT ,P-ITBL ,P-PREP1N .WRD>)>)
(<EQUAL? ,P-NCN 2>
<TELL
"There were too many nouns in that sentence." CR>
<RFALSE>)
(T
<SETG P-NCN <+ ,P-NCN 1>>
<SETG P-ACT .VERB>
<OR <SET PTR <CLAUSE .PTR .VAL .WRD>>
<RFALSE>>
<COND (<L? .PTR 0>
<SETG QUOTE-FLAG <>>
<RETURN>)>)>)
(<EQUAL? .WRD ,W?OF>
<COND (<OR <NOT .OF-FLAG>
<EQUAL? .NW ,W?PERIOD ,W?THEN>>
<CANT-USE .PTR>
<RFALSE>)
(T
<SET OF-FLAG <>>)>)
(<WT? .WRD ,PS?BUZZ-WORD>)
(<AND <EQUAL? .VERB ,ACT?TELL>
<WT? .WRD ,PS?VERB ,P1?VERB>
<EQUAL? ,WINNER ,PLAYER>>
<TELL
"Please consult your manual for the correct way to talk to other people
or creatures." CR>
<RFALSE>)
(T
<CANT-USE .PTR>
<RFALSE>)>)
(T
<UNKNOWN-WORD .PTR>
<RFALSE>)>
<SET LW .WRD>
<SET PTR <+ .PTR ,P-LEXELEN>>>)>
<PUT ,OOPS-TABLE ,O-PTR <>>
<COND (.DIR
<SETG PRSA ,V?WALK>
<SETG PRSO .DIR>
<SETG P-OFLAG <>>
<SETG P-WALK-DIR .DIR>
<SETG AGAIN-DIR .DIR>)
(ELSE
<COND (,P-OFLAG <ORPHAN-MERGE>)>
<SETG P-WALK-DIR <>>
<SETG AGAIN-DIR <>>
<COND (<AND <SYNTAX-CHECK>
<SNARF-OBJECTS>
<MANY-CHECK>
<TAKE-CHECK>>
T)>)>>
<GLOBAL P-ACT <>>
<GLOBAL P-WALK-DIR <>>
<GLOBAL AGAIN-DIR <>>
;"For AGAIN purposes, put contents of one LEXV table into another."
<ROUTINE STUFF (SRC DEST "OPTIONAL" (MAX 29) "AUX" (PTR ,P-LEXSTART) (CTR 1)
BPTR)
<PUTB .DEST 0 <GETB .SRC 0>>
<PUTB .DEST 1 <GETB .SRC 1>>
<REPEAT ()
<PUT .DEST .PTR <GET .SRC .PTR>>
<SET BPTR <+ <* .PTR 2> 2>>
<PUTB .DEST .BPTR <GETB .SRC .BPTR>>
<SET BPTR <+ <* .PTR 2> 3>>
<PUTB .DEST .BPTR <GETB .SRC .BPTR>>
<SET PTR <+ .PTR ,P-LEXELEN>>
<COND (<IGRTR? CTR .MAX>
<RETURN>)>>>
;"Put contents of one INBUF into another"
<ROUTINE INBUF-STUFF (SRC DEST "AUX" CNT)
<SET CNT <- <GETB .SRC 0> 1>>
<REPEAT ()
<PUTB .DEST .CNT <GETB .SRC .CNT>>
<COND (<DLESS? CNT 0> <RETURN>)>>>
;"Put the word in the positions specified from P-INBUF to the end of
OOPS-INBUF, leaving the appropriate pointers in AGAIN-LEXV"
<ROUTINE INBUF-ADD (LEN BEG SLOT "AUX" DBEG (CTR 0) TMP)
<COND (<SET TMP <GET ,OOPS-TABLE ,O-END>>
<SET DBEG .TMP>)
(T
<SET DBEG <+ <GETB ,AGAIN-LEXV
<SET TMP <GET ,OOPS-TABLE ,O-LENGTH>>>
<GETB ,AGAIN-LEXV <+ .TMP 1>>>>)>
<PUT ,OOPS-TABLE ,O-END <+ .DBEG .LEN>>
<REPEAT ()
<PUTB ,OOPS-INBUF <+ .DBEG .CTR> <GETB ,P-INBUF <+ .BEG .CTR>>>
<SET CTR <+ .CTR 1>>
<COND (<EQUAL? .CTR .LEN> <RETURN>)>>
<PUTB ,AGAIN-LEXV .SLOT .DBEG>
<PUTB ,AGAIN-LEXV <- .SLOT 1> .LEN>>
;"Check whether word pointed at by PTR is the correct part of speech.
The second argument is the part of speech (,PS?<part of speech>). The
3rd argument (,P1?<part of speech>), if given, causes the value
for that part of speech to be returned."
<ROUTINE WT? (PTR BIT "OPTIONAL" (B1 5) "AUX" (OFFS ,P-P1OFF) TYP)
<COND (<BTST <SET TYP <GETB .PTR ,P-PSOFF>> .BIT>
<COND (<G? .B1 4> <RTRUE>)
(T
<SET TYP <BAND .TYP ,P-P1BITS>>
<COND (<NOT <EQUAL? .TYP .B1>> <SET OFFS <+ .OFFS 1>>)>
<GETB .PTR .OFFS>)>)>>
;" Scan through a noun clause, leave a pointer to its starting location"
<ROUTINE CLAUSE (PTR VAL WRD "AUX" OFF NUM (ANDFLG <>) (FIRST?? T) NW (LW 0))
<SET OFF <* <- ,P-NCN 1> 2>>
<COND (<NOT <EQUAL? .VAL 0>>
<PUT ,P-ITBL <SET NUM <+ ,P-PREP1 .OFF>> .VAL>
<PUT ,P-ITBL <+ .NUM 1> .WRD>
<SET PTR <+ .PTR ,P-LEXELEN>>)
(T <SETG P-LEN <+ ,P-LEN 1>>)>
<COND (<ZERO? ,P-LEN> <SETG P-NCN <- ,P-NCN 1>> <RETURN -1>)>
<PUT ,P-ITBL <SET NUM <+ ,P-NC1 .OFF>> <REST ,P-LEXV <* .PTR 2>>>
<COND (<EQUAL? <GET ,P-LEXV .PTR> ,W?THE ,W?A ,W?AN>
<PUT ,P-ITBL .NUM <REST <GET ,P-ITBL .NUM> 4>>)>
<REPEAT ()
<COND (<L? <SETG P-LEN <- ,P-LEN 1>> 0>
<PUT ,P-ITBL <+ .NUM 1> <REST ,P-LEXV <* .PTR 2>>>
<RETURN -1>)>
<COND (<OR <SET WRD <GET ,P-LEXV .PTR>>
<SET WRD <NUMBER? .PTR>>>
<COND (<ZERO? ,P-LEN> <SET NW 0>)
(T <SET NW <GET ,P-LEXV <+ .PTR ,P-LEXELEN>>>)>
<COND (<EQUAL? .WRD ,W?AND ,W?COMMA> <SET ANDFLG T>)
(<EQUAL? .WRD ,W?ALL ,W?ONE ;,W?BOTH>
<COND (<EQUAL? .NW ,W?OF>
<SETG P-LEN <- ,P-LEN 1>>
<SET PTR <+ .PTR ,P-LEXELEN>>)>)
(<OR <EQUAL? .WRD ,W?THEN ,W?PERIOD>
<AND <WT? .WRD ,PS?PREPOSITION>
<GET ,P-ITBL ,P-VERB>
;"ADDED 4/27 FOR TURTLE,UP"
<NOT .FIRST??>>>
<SETG P-LEN <+ ,P-LEN 1>>
<PUT ,P-ITBL
<+ .NUM 1>
<REST ,P-LEXV <* .PTR 2>>>
<RETURN <- .PTR ,P-LEXELEN>>)
(<WT? .WRD ,PS?OBJECT>
<COND (<AND <G? ,P-LEN 0>
<EQUAL? .NW ,W?OF>
<NOT <EQUAL? .WRD ,W?ALL ,W?ONE>>>
T)
(<AND <WT? .WRD
,PS?ADJECTIVE
,P1?ADJECTIVE>
<NOT <EQUAL? .NW 0>>
<WT? .NW ,PS?OBJECT>>)
(<AND <NOT .ANDFLG>
<NOT <EQUAL? .NW ,W?BUT ,W?EXCEPT>>
<NOT <EQUAL? .NW ,W?AND ,W?COMMA>>>
<PUT ,P-ITBL
<+ .NUM 1>
<REST ,P-LEXV <* <+ .PTR 2> 2>>>
<RETURN .PTR>)
(T <SET ANDFLG <>>)>)
(<AND <OR ,P-MERGED
,P-OFLAG
<NOT <EQUAL? <GET ,P-ITBL ,P-VERB> 0>>>
<OR <WT? .WRD ,PS?ADJECTIVE>
<WT? .WRD ,PS?BUZZ-WORD>>>)
(<AND .ANDFLG
<OR <WT? .WRD ,PS?DIRECTION>
<WT? .WRD ,PS?VERB>>>
<SET PTR <- .PTR 4>>
<PUT ,P-LEXV <+ .PTR 2> ,W?THEN>
<SETG P-LEN <+ ,P-LEN 2>>)
(<WT? .WRD ,PS?PREPOSITION> T)
(T
<CANT-USE .PTR>
<RFALSE>)>)
(T <UNKNOWN-WORD .PTR> <RFALSE>)>
<SET LW .WRD>
<SET FIRST?? <>>
<SET PTR <+ .PTR ,P-LEXELEN>>>>
<ROUTINE NUMBER? (PTR "AUX" CNT BPTR CHR (SUM 0) (TIM <>))
<SET CNT <GETB <REST ,P-LEXV <* .PTR 2>> 2>>
<SET BPTR <GETB <REST ,P-LEXV <* .PTR 2>> 3>>
<REPEAT ()
<COND (<L? <SET CNT <- .CNT 1>> 0> <RETURN>)
(T
<SET CHR <GETB ,P-INBUF .BPTR>>
<COND (<EQUAL? .CHR 58>
<SET TIM .SUM>
<SET SUM 0>)
(<G? .SUM 10000> <RFALSE>)
(<AND <L? .CHR 58> <G? .CHR 47>>
<SET SUM <+ <* .SUM 10> <- .CHR 48>>>)
(T <RFALSE>)>
<SET BPTR <+ .BPTR 1>>)>>
<PUT ,P-LEXV .PTR ,W?INTNUM>
<COND (<G? .SUM 1000> <RFALSE>)
(.TIM
<COND (<L? .TIM 8> <SET TIM <+ .TIM 12>>)
(<G? .TIM 23> <RFALSE>)>
<SET SUM <+ .SUM <* .TIM 60>>>)>
<SETG P-NUMBER .SUM>
,W?INTNUM>
<GLOBAL P-NUMBER 0>
<GLOBAL P-DIRECTION 0>
;"New ORPHAN-MERGE for TRAP Retrofix 6/21/84"
<ROUTINE ORPHAN-MERGE ("AUX" (CNT -1) TEMP VERB BEG END (ADJ <>) WRD)
<SETG P-OFLAG <>>
<COND (<OR <EQUAL? <WT? <SET WRD <GET <GET ,P-ITBL ,P-VERBN> 0>>
,PS?VERB ,P1?VERB>
<GET ,P-OTBL ,P-VERB>>
<NOT <ZERO? <WT? .WRD ,PS?ADJECTIVE>>>>
<SET ADJ T>)
(<AND <NOT <ZERO? <WT? .WRD ,PS?OBJECT ,P1?OBJECT>>>
<EQUAL? ,P-NCN 0>>
<PUT ,P-ITBL ,P-VERB 0>
<PUT ,P-ITBL ,P-VERBN 0>
<PUT ,P-ITBL ,P-NC1 <REST ,P-LEXV 2>>
<PUT ,P-ITBL ,P-NC1L <REST ,P-LEXV 6>>
<SETG P-NCN 1>)>
<COND (<AND <NOT <ZERO? <SET VERB <GET ,P-ITBL ,P-VERB>>>>
<NOT .ADJ>
<NOT <EQUAL? .VERB <GET ,P-OTBL ,P-VERB>>>>
<RFALSE>)
(<EQUAL? ,P-NCN 2> <RFALSE>)
(<EQUAL? <GET ,P-OTBL ,P-NC1> 1>
<COND (<OR <EQUAL? <SET TEMP <GET ,P-ITBL ,P-PREP1>>
<GET ,P-OTBL ,P-PREP1>>
<ZERO? .TEMP>>
<COND (.ADJ
<PUT ,P-OTBL ,P-NC1 <REST ,P-LEXV 2>>
<COND (<ZERO? <GET ,P-ITBL ,P-NC1L>>
<PUT ,P-ITBL ,P-NC1L <REST ,P-LEXV 6>>)>
<COND (<ZERO? ,P-NCN> <SETG P-NCN 1>)>)
(T
<PUT ,P-OTBL ,P-NC1 <GET ,P-ITBL ,P-NC1>>)>
<PUT ,P-OTBL ,P-NC1L <GET ,P-ITBL ,P-NC1L>>)
(T <RFALSE>)>)
(<EQUAL? <GET ,P-OTBL ,P-NC2> 1>
<COND (<OR <EQUAL? <SET TEMP <GET ,P-ITBL ,P-PREP1>>
<GET ,P-OTBL ,P-PREP2>>
<ZERO? .TEMP>>
<COND (.ADJ
<PUT ,P-ITBL ,P-NC1 <REST ,P-LEXV 2>>
<COND (<ZERO? <GET ,P-ITBL ,P-NC1L>>
<PUT ,P-ITBL ,P-NC1L <REST ,P-LEXV 6>>)>)>
<PUT ,P-OTBL ,P-NC2 <GET ,P-ITBL ,P-NC1>>
<PUT ,P-OTBL ,P-NC2L <GET ,P-ITBL ,P-NC1L>>
<SETG P-NCN 2>)
(T <RFALSE>)>)
(<NOT <ZERO? ,P-ACLAUSE>>
<COND (<AND <NOT <EQUAL? ,P-NCN 1>> <NOT .ADJ>>
<SETG P-ACLAUSE <>>
<RFALSE>)
(T
<SET BEG <GET ,P-ITBL ,P-NC1>>
<COND (.ADJ <SET BEG <REST ,P-LEXV 2>> <SET ADJ <>>)>
<SET END <GET ,P-ITBL ,P-NC1L>>
<REPEAT ()
<SET WRD <GET .BEG 0>>
<COND (<EQUAL? .BEG .END>
<COND (.ADJ <ACLAUSE-WIN .ADJ> <RETURN>)
(T <SETG P-ACLAUSE <>> <RFALSE>)>)
(<AND <NOT .ADJ>
<OR <BTST <GETB .WRD ,P-PSOFF>
,PS?ADJECTIVE>
<EQUAL? .WRD ,W?ALL ,W?ONE>>>
<SET ADJ .WRD>)
(<EQUAL? .WRD ,W?ONE>
<ACLAUSE-WIN .ADJ>
<RETURN>)
(<BTST <GETB .WRD ,P-PSOFF> ,PS?OBJECT>
<COND (<EQUAL? .WRD ,P-ANAM>
<ACLAUSE-WIN .ADJ>)
(T
<NCLAUSE-WIN>)>
<RETURN>)>
<SET BEG <REST .BEG ,P-WORDLEN>>
<COND (<EQUAL? .END 0>
<SET END .BEG>
<SETG P-NCN 1>
<PUT ,P-ITBL ,P-NC1 <BACK .BEG 4>>
<PUT ,P-ITBL ,P-NC1L .BEG>)>>)>)>
<PUT ,P-VTBL 0 <GET ,P-OVTBL 0>>
<PUTB ,P-VTBL 2 <GETB ,P-OVTBL 2>>
<PUTB ,P-VTBL 3 <GETB ,P-OVTBL 3>>
<PUT ,P-OTBL ,P-VERBN ,P-VTBL>
<PUTB ,P-VTBL 2 0>
<REPEAT ()
<COND (<G? <SET CNT <+ .CNT 1>> ,P-ITBLLEN>
<SETG P-MERGED T>
<RTRUE>)
(T <PUT ,P-ITBL .CNT <GET ,P-OTBL .CNT>>)>>
T>
;"New ACLAUSE-WIN for TRAP retrofix 6/21/84"
<ROUTINE ACLAUSE-WIN (ADJ)
<PUT ,P-ITBL ,P-VERB <GET ,P-OTBL ,P-VERB>>
<PUT ,P-CCTBL ,CC-SBPTR ,P-ACLAUSE>
<PUT ,P-CCTBL ,CC-SEPTR <+ ,P-ACLAUSE 1>>
<PUT ,P-CCTBL ,CC-DBPTR ,P-ACLAUSE>
<PUT ,P-CCTBL ,CC-DEPTR <+ ,P-ACLAUSE 1>>
<CLAUSE-COPY ,P-OTBL ,P-OTBL .ADJ>
<AND <NOT <EQUAL? <GET ,P-OTBL ,P-NC2> 0>> <SETG P-NCN 2>>
<SETG P-ACLAUSE <>>
<RTRUE>>
<ROUTINE NCLAUSE-WIN ()
<PUT ,P-CCTBL ,CC-SBPTR ,P-NC1>
<PUT ,P-CCTBL ,CC-SEPTR ,P-NC1L>
<PUT ,P-CCTBL ,CC-DBPTR ,P-ACLAUSE>
<PUT ,P-CCTBL ,CC-DEPTR <+ ,P-ACLAUSE 1>>
<CLAUSE-COPY ,P-ITBL ,P-OTBL>
<AND <NOT <EQUAL? <GET ,P-OTBL ,P-NC2> 0>> <SETG P-NCN 2>>
<SETG P-ACLAUSE <>>
<RTRUE>>
;"Print undefined word in input.
PTR points to the unknown word in P-LEXV"
<ROUTINE WORD-PRINT (CNT BUF)
<REPEAT ()
<COND (<DLESS? CNT 0> <RETURN>)
(ELSE
<PRINTC <GETB ,P-INBUF .BUF>>
<SET BUF <+ .BUF 1>>)>>>
<ROUTINE UNKNOWN-WORD (PTR "AUX" BUF)
<PUT ,OOPS-TABLE ,O-PTR .PTR>
<COND (<VERB? SAY>
<TELL "Nothing happens." CR>
<RFALSE>)>
<TELL "I don't know the word \"">
<WORD-PRINT <GETB <REST ,P-LEXV <SET BUF <* .PTR 2>>> 2>
<GETB <REST ,P-LEXV .BUF> 3>>
<TELL "\"." CR>
<SETG QUOTE-FLAG <>>
<SETG P-OFLAG <>>>
<ROUTINE CANT-USE (PTR "AUX" BUF)
<COND (<VERB? SAY>
<TELL "Nothing happens." CR>
<RFALSE>)>
<TELL "You used the word \"">
<WORD-PRINT <GETB <REST ,P-LEXV <SET BUF <* .PTR 2>>> 2>
<GETB <REST ,P-LEXV .BUF> 3>>
<TELL "\" in a way that I don't understand." CR>
<SETG QUOTE-FLAG <>>
<SETG P-OFLAG <>>>
;" Perform syntax matching operations, using P-ITBL as the source of
the verb and adjectives for this input. Returns false if no
syntax matches, and does it's own orphaning. If return is true,
the syntax is saved in P-SYNTAX."
<GLOBAL P-SLOCBITS 0>
<CONSTANT P-SYNLEN 8>
<CONSTANT P-SBITS 0>
<CONSTANT P-SPREP1 1>
<CONSTANT P-SPREP2 2>
<CONSTANT P-SFWIM1 3>
<CONSTANT P-SFWIM2 4>
<CONSTANT P-SLOC1 5>
<CONSTANT P-SLOC2 6>
<CONSTANT P-SACTION 7>
<CONSTANT P-SONUMS 3>
<ROUTINE SYNTAX-CHECK ("AUX" SYN LEN NUM OBJ
(DRIVE1 <>) (DRIVE2 <>) PREP VERB TMP)
<COND (<ZERO? <SET VERB <GET ,P-ITBL ,P-VERB>>>
<TELL "There was no verb in that sentence!" CR>
<RFALSE>)>
<SET SYN <GET ,VERBS <- 255 .VERB>>>
<SET LEN <GETB .SYN 0>>
<SET SYN <REST .SYN>>
<REPEAT ()
<SET NUM <BAND <GETB .SYN ,P-SBITS> ,P-SONUMS>>
<COND (<G? ,P-NCN .NUM> T)
(<AND <NOT <L? .NUM 1>>
<ZERO? ,P-NCN>
<OR <ZERO? <SET PREP <GET ,P-ITBL ,P-PREP1>>>
<EQUAL? .PREP <GETB .SYN ,P-SPREP1>>>>
<SET DRIVE1 .SYN>)
(<EQUAL? <GETB .SYN ,P-SPREP1> <GET ,P-ITBL ,P-PREP1>>
<COND (<AND <EQUAL? .NUM 2> <EQUAL? ,P-NCN 1>>
<SET DRIVE2 .SYN>)
(<EQUAL? <GETB .SYN ,P-SPREP2>
<GET ,P-ITBL ,P-PREP2>>
<SYNTAX-FOUND .SYN>
<RTRUE>)>)>
<COND (<DLESS? LEN 1>
<COND (<OR .DRIVE1 .DRIVE2> <RETURN>)
(T
<TELL
"That sentence isn't one I recognize." CR>
<RFALSE>)>)
(T <SET SYN <REST .SYN ,P-SYNLEN>>)>>
<COND (<AND .DRIVE1
<SET OBJ
<GWIM <GETB .DRIVE1 ,P-SFWIM1>
<GETB .DRIVE1 ,P-SLOC1>
<GETB .DRIVE1 ,P-SPREP1>>>>
<PUT ,P-PRSO ,P-MATCHLEN 1>
<PUT ,P-PRSO 1 .OBJ>
<SYNTAX-FOUND .DRIVE1>)
(<AND .DRIVE2
<SET OBJ
<GWIM <GETB .DRIVE2 ,P-SFWIM2>
<GETB .DRIVE2 ,P-SLOC2>
<GETB .DRIVE2 ,P-SPREP2>>>>
<PUT ,P-PRSI ,P-MATCHLEN 1>
<PUT ,P-PRSI 1 .OBJ>
<SYNTAX-FOUND .DRIVE2>)
(<EQUAL? .VERB ,ACT?FIND>
<TELL "That question can't be answered." CR>
<RFALSE>)
(<NOT <EQUAL? ,WINNER ,PLAYER>>
<CANT-ORPHAN>)
(T
<ORPHAN .DRIVE1 .DRIVE2>
<TELL "What do you want to ">
<SET TMP <GET ,P-OTBL ,P-VERBN>>
<COND (<EQUAL? .TMP 0> <TELL "tell">)
(<ZERO? <GETB ,P-VTBL 2>>
<PRINTB <GET .TMP 0>>)
(T
<WORD-PRINT <GETB .TMP 2> <GETB .TMP 3>>
<PUTB ,P-VTBL 2 0>)>
<COND (.DRIVE2
<TELL " ">
<THING-PRINT T T>)>
<SETG P-OFLAG T>
<PREP-PRINT <COND (.DRIVE1 <GETB .DRIVE1 ,P-SPREP1>)
(T <GETB .DRIVE2 ,P-SPREP2>)>>
<TELL "?" CR>
<RFALSE>)>>
<ROUTINE CANT-ORPHAN ()
<TELL "\"I don't understand! What are you referring to?\"" CR>
<RFALSE>>
<ROUTINE ORPHAN (D1 D2 "AUX" (CNT -1))
<COND (<NOT ,P-MERGED>
<PUT ,P-OCLAUSE ,P-MATCHLEN 0>)>
<PUT ,P-OVTBL 0 <GET ,P-VTBL 0>>
<PUTB ,P-OVTBL 2 <GETB ,P-VTBL 2>>
<PUTB ,P-OVTBL 3 <GETB ,P-VTBL 3>>
<REPEAT ()
<COND (<IGRTR? CNT ,P-ITBLLEN> <RETURN>)
(T <PUT ,P-OTBL .CNT <GET ,P-ITBL .CNT>>)>>
<COND (<EQUAL? ,P-NCN 2>
<PUT ,P-CCTBL ,CC-SBPTR ,P-NC2>
<PUT ,P-CCTBL ,CC-SEPTR ,P-NC2L>
<PUT ,P-CCTBL ,CC-DBPTR ,P-NC2>
<PUT ,P-CCTBL ,CC-DEPTR ,P-NC2L>
<CLAUSE-COPY ,P-ITBL ,P-OTBL>)>
<COND (<NOT <L? ,P-NCN 1>>
<PUT ,P-CCTBL ,CC-SBPTR ,P-NC1>
<PUT ,P-CCTBL ,CC-SEPTR ,P-NC1L>
<PUT ,P-CCTBL ,CC-DBPTR ,P-NC1>
<PUT ,P-CCTBL ,CC-DEPTR ,P-NC1L>
<CLAUSE-COPY ,P-ITBL ,P-OTBL>)>
<COND (.D1
<PUT ,P-OTBL ,P-PREP1 <GETB .D1 ,P-SPREP1>>
<PUT ,P-OTBL ,P-NC1 1>)
(.D2
<PUT ,P-OTBL ,P-PREP2 <GETB .D2 ,P-SPREP2>>
<PUT ,P-OTBL ,P-NC2 1>)>>
<ROUTINE THING-PRINT (PRSO? "OPTIONAL" (THE? <>) "AUX" BEG END)
<COND (.PRSO?
<SET BEG <GET ,P-ITBL ,P-NC1>>
<SET END <GET ,P-ITBL ,P-NC1L>>)
(ELSE
<SET BEG <GET ,P-ITBL ,P-NC2>>
<SET END <GET ,P-ITBL ,P-NC2L>>)>
<BUFFER-PRINT .BEG .END .THE?>>
<ROUTINE BUFFER-PRINT (BEG END CP
"AUX" (NOSP T) WRD (FIRST?? T) (PN <>) (Q? <>))
<REPEAT ()
<COND (<EQUAL? .BEG .END> <RETURN>)
(T
<SET WRD <GET .BEG 0>>
<COND ;(<EQUAL? .WRD ,W?$BUZZ> T)
(<EQUAL? .WRD ,W?COMMA>
<TELL ", ">)
(.NOSP <SET NOSP <>>)
(ELSE <TELL " ">)>
<COND (<EQUAL? .WRD ,W?PERIOD ,W?COMMA>
<SET NOSP T>)
(<EQUAL? .WRD ,W?ME>
<PRINTD ,ME>
<SET PN T>)
(<EQUAL? .WRD ,W?INTNUM>
<PRINTN ,P-NUMBER>
<SET PN T>)
(T
<COND (<AND .FIRST?? <NOT .PN> .CP>
<TELL "the ">)>
<COND (<OR ,P-OFLAG ,P-MERGED> <PRINTB .WRD>)
(<AND <EQUAL? .WRD ,W?IT>
<ACCESSIBLE? ,P-IT-OBJECT>>
<PRINTD ,P-IT-OBJECT>)
(T
<WORD-PRINT <GETB .BEG 2>
<GETB .BEG 3>>)>
<SET FIRST?? <>>)>)>
<SET BEG <REST .BEG ,P-WORDLEN>>>>
<ROUTINE PREP-PRINT (PREP "AUX" WRD)
<COND (<NOT <ZERO? .PREP>>
<TELL " ">
<COND ;(<EQUAL? .PREP ,PR?THROUGH>
<TELL "through">)
(T
<SET WRD <PREP-FIND .PREP>>
<PRINTB .WRD>)>)>>
<ROUTINE CLAUSE-COPY (SRC DEST "OPTIONAL" (INSRT <>) "AUX" BEG END)
<SET BEG <GET .SRC <GET ,P-CCTBL ,CC-SBPTR>>>
<SET END <GET .SRC <GET ,P-CCTBL ,CC-SEPTR>>>
<PUT .DEST
<GET ,P-CCTBL ,CC-DBPTR>
<REST ,P-OCLAUSE
<+ <* <GET ,P-OCLAUSE ,P-MATCHLEN> ,P-LEXELEN> 2>>>
<REPEAT ()
<COND (<EQUAL? .BEG .END>
<PUT .DEST
<GET ,P-CCTBL ,CC-DEPTR>
<REST ,P-OCLAUSE
<+ <* <GET ,P-OCLAUSE ,P-MATCHLEN> ,P-LEXELEN>
2>>>
<RETURN>)
(T
<COND (<AND .INSRT <EQUAL? ,P-ANAM <GET .BEG 0>>>
<CLAUSE-ADD .INSRT>)>
<CLAUSE-ADD <GET .BEG 0>>)>
<SET BEG <REST .BEG ,P-WORDLEN>>>>
<ROUTINE CLAUSE-ADD (WRD "AUX" PTR)
<SET PTR <+ <GET ,P-OCLAUSE ,P-MATCHLEN> 2>>
<PUT ,P-OCLAUSE <- .PTR 1> .WRD>
<PUT ,P-OCLAUSE .PTR 0>
<PUT ,P-OCLAUSE ,P-MATCHLEN .PTR>>
<ROUTINE PREP-FIND (PREP "AUX" (CNT 0) SIZE)
<SET SIZE <* <GET ,PREPOSITIONS 0> 2>>
<REPEAT ()
<COND (<IGRTR? CNT .SIZE> <RFALSE>)
(<EQUAL? <GET ,PREPOSITIONS .CNT> .PREP>
<RETURN <GET ,PREPOSITIONS <- .CNT 1>>>)>>>
<ROUTINE SYNTAX-FOUND (SYN)
<SETG P-SYNTAX .SYN>
<SETG PRSA <GETB .SYN ,P-SACTION>>>
<GLOBAL P-GWIMBIT 0>
<ROUTINE GWIM (GBIT LBIT PREP "AUX" OBJ)
<COND (<EQUAL? .GBIT ,RMUNGBIT>
<RETURN ,ROOMS>)>
<SETG P-GWIMBIT .GBIT>
<SETG P-SLOCBITS .LBIT>
<PUT ,P-MERGE ,P-MATCHLEN 0>
<COND (<GET-OBJECT ,P-MERGE <>>
<SETG P-GWIMBIT 0>
<COND (<EQUAL? <GET ,P-MERGE ,P-MATCHLEN> 1>
<SET OBJ <GET ,P-MERGE 1>>
<TELL "(">
<COND (<AND <NOT <ZERO? .PREP>>
<NOT ,P-END-ON-PREP>>
<PRINTB <SET PREP <PREP-FIND .PREP>>>
<COND (<EQUAL? .PREP ,W?OUT>
<TELL " of">)>
<TELL " ">
<COND (<EQUAL? .OBJ ,HANDS>
<TELL "your hands">)
(T
<TELL "the " D .OBJ>)>
<TELL ")" CR>)
(ELSE
<TELL D .OBJ ")" CR>)>
.OBJ)>)
(T <SETG P-GWIMBIT 0> <RFALSE>)>>
<ROUTINE SNARF-OBJECTS ("AUX" OPTR IPTR L)
<PUT ,P-BUTS ,P-MATCHLEN 0>
<COND (<NOT <EQUAL? <SET IPTR <GET ,P-ITBL ,P-NC2>> 0>>
<SETG P-SLOCBITS <GETB ,P-SYNTAX ,P-SLOC2>>
<OR <SNARFEM .IPTR <GET ,P-ITBL ,P-NC2L> ,P-PRSI> <RFALSE>>)>
<COND (<NOT <EQUAL? <SET OPTR <GET ,P-ITBL ,P-NC1>> 0>>
<SETG P-SLOCBITS <GETB ,P-SYNTAX ,P-SLOC1>>
<OR <SNARFEM .OPTR <GET ,P-ITBL ,P-NC1L> ,P-PRSO> <RFALSE>>)>
<COND (<NOT <ZERO? <GET ,P-BUTS ,P-MATCHLEN>>>
<SET L <GET ,P-PRSO ,P-MATCHLEN>>
<COND (.OPTR <SETG P-PRSO <BUT-MERGE ,P-PRSO>>)>
<COND (<AND .IPTR
<OR <NOT .OPTR>
<EQUAL? .L <GET ,P-PRSO ,P-MATCHLEN>>>>
<SETG P-PRSI <BUT-MERGE ,P-PRSI>>)>)>
<RTRUE>>
<ROUTINE BUT-MERGE (TBL "AUX" LEN BUTLEN (CNT 1) (MATCHES 0) OBJ NTBL)
<SET LEN <GET .TBL ,P-MATCHLEN>>
<PUT ,P-MERGE ,P-MATCHLEN 0>
<REPEAT ()
<COND (<DLESS? LEN 0> <RETURN>)
(<ZMEMQ <SET OBJ <GET .TBL .CNT>> ,P-BUTS>)
(T
<PUT ,P-MERGE <+ .MATCHES 1> .OBJ>
<SET MATCHES <+ .MATCHES 1>>)>
<SET CNT <+ .CNT 1>>>
<PUT ,P-MERGE ,P-MATCHLEN .MATCHES>
<SET NTBL ,P-MERGE>
<SETG P-MERGE .TBL>
.NTBL>
<GLOBAL P-NAM <>>
<GLOBAL P-ADJ <>>
<GLOBAL P-ADVERB <>>
<GLOBAL P-ADJN <>>
<GLOBAL P-PRSO <ITABLE NONE 50>>
<GLOBAL P-PRSI <ITABLE NONE 50>>
<GLOBAL P-BUTS <ITABLE NONE 50>>
<GLOBAL P-MERGE <ITABLE NONE 50>>
<GLOBAL P-OCLAUSE <ITABLE NONE 100>>
<GLOBAL P-MATCHLEN 0>
<GLOBAL P-GETFLAGS 0>
<CONSTANT P-ALL 1>
<CONSTANT P-ONE 2>
<CONSTANT P-INHIBIT 4>
<GLOBAL P-AND <>>
<ROUTINE SNARFEM (PTR EPTR TBL "AUX" (BUT <>) LEN WV WRD NW (WAS-ALL <>))
<SETG P-AND <>>
<COND (<EQUAL? ,P-GETFLAGS ,P-ALL>
<SET WAS-ALL T>)>
<SETG P-GETFLAGS 0>
<PUT .TBL ,P-MATCHLEN 0>
<SET WRD <GET .PTR 0>>
<REPEAT ()
<COND (<EQUAL? .PTR .EPTR>
<SET WV <GET-OBJECT <OR .BUT .TBL>>>
<COND (.WAS-ALL <SETG P-GETFLAGS ,P-ALL>)>
<RETURN .WV>)
(T
<COND (<==? .EPTR <REST .PTR ,P-WORDLEN>>
<SET NW 0>)
(T <SET NW <GET .PTR ,P-LEXELEN>>)>
<COND (<EQUAL? .WRD ,W?ALL ;,W?BOTH>
<SETG P-GETFLAGS ,P-ALL>
<COND (<EQUAL? .NW ,W?OF>
<SET PTR <REST .PTR ,P-WORDLEN>>)>)
(<EQUAL? .WRD ,W?BUT ,W?EXCEPT>
<OR <GET-OBJECT <OR .BUT .TBL>> <RFALSE>>
<SET BUT ,P-BUTS>