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fix bug with ^ and $

This commit is contained in:
~d6 2022-04-11 00:16:31 -04:00
parent c1885c8038
commit edfd0b791b
2 changed files with 39 additions and 48 deletions
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52
regex.tal
View File

@ -115,24 +115,21 @@
( str* should be a null-terminated string. ) ( str* should be a null-terminated string. )
( ) ( )
( returns true if the string, and false otherwise. ) ( returns true if the string, and false otherwise. )
@match ( str* regex* -> bool^ ) @rx-match ( str* regex* -> bool^ )
#01 ;match-multiline STA #01 ;match-multiline STA
#00 ;search-mode STA #00 ;search-mode STA
;reset-stack JSR2 ;reset-stack JSR2
;loop JMP2 ;loop JMP2
@rx-search-multiline ( str* regex* -> bool^ )
#01 ;match-multiline STA
#01 ;search-mode STA
,rx-search/main JMP
@rx-search ( str* regex* -> bool^ ) @rx-search ( str* regex* -> bool^ )
#00 ;match-multiline STA #00 ;match-multiline STA
#01 ;search-mode STA #01 ;search-mode STA
;_search JMP2 &main STH2 ( s* [r*] )
( @search-multiline ( str* regex* -> bool^ )
#01 ;match-multiline STA
#01 ;search-mode STA
;_search JMP2 )
@_search ( str* regex* -> bool^ )
STH2 ( s* [r*] )
DUP2 ;string-start STA2 ( s* [r*] ) DUP2 ;string-start STA2 ( s* [r*] )
&loop LDAk #00 EQU ,&eof JCN ( s* [r*] ) &loop LDAk #00 EQU ,&eof JCN ( s* [r*] )
;reset-stack JSR2 ( s* [r*] ) ;reset-stack JSR2 ( s* [r*] )
@ -430,7 +427,7 @@
( allocates a caret-node and continues. ) ( allocates a caret-node and continues. )
@c-caret ( c^ -> r2* ) @c-caret ( c^ -> r2* )
POP POP
#06 ;alloc3 JMP2 #06 ;alloc3 JSR2
DUP2 ;c-peek-and-finalize JMP2 DUP2 ;c-peek-and-finalize JMP2
( called when we read "$" ) ( called when we read "$" )
@ -438,7 +435,7 @@
( allocates a dollar-node and continues. ) ( allocates a dollar-node and continues. )
@c-dollar ( c^ -> r2* ) @c-dollar ( c^ -> r2* )
POP POP
#07 ;alloc3 JMP2 #07 ;alloc3 JSR2
DUP2 ;c-peek-and-finalize JMP2 DUP2 ;c-peek-and-finalize JMP2
( called when we read "\" ) ( called when we read "\" )
@ -494,6 +491,10 @@
( ALLOCATING REGEX NDOES ) ( ALLOCATING REGEX NDOES )
@rx-node-sizes
( 00 01 02 03 04 05 06 07 08 09 )
[ 00 03 03 04 ] [ 05 05 03 03 ] [ 05 05 ]
@alloc3 ( mode^ -> r* ) @alloc3 ( mode^ -> r* )
#0000 ROT ( 00 00 mode^ ) #0000 ROT ( 00 00 mode^ )
#03 ;alloc JSR2 ( 00 00 mode^ addr* ) #03 ;alloc JSR2 ( 00 00 mode^ addr* )
@ -588,7 +589,7 @@
;set-next JSR2 SWP2 ( x0 r1 ) ;set-next JSR2 SWP2 ( x0 r1 )
;push4 JSR2 ;push4 JSR2
JMP2r JMP2r
&is-zero POP2 POP2 ;push4 JSR2 JMP2r &is-zero POP2 POP2 ;push4 JMP2
( load the given address: ) ( load the given address: )
( ) ( )
@ -596,7 +597,7 @@
( 2. otherwise, call set-next on it ) ( 2. otherwise, call set-next on it )
@set-next-addr ( target* addr* -> ) @set-next-addr ( target* addr* -> )
LDA2k #0000 EQU2 ( target addr addr=0? ) ,&is-zero JCN LDA2k #0000 EQU2 ( target addr addr=0? ) ,&is-zero JCN
LDA2 ;set-next JSR2 JMP2r LDA2 ;set-next JMP2
&is-zero STA2 JMP2r &is-zero STA2 JMP2r
( set regex.next to target ) ( set regex.next to target )
@ -611,16 +612,15 @@
( you can end up double-appending things. ) ( you can end up double-appending things. )
@set-next ( target* regex* -> ) @set-next ( target* regex* -> )
LDAk #01 LTH ,&unknown JCN LDAk #01 LTH ,&unknown JCN
LDAk #07 GTH ,&unknown JCN LDAk #09 GTH ,&unknown JCN
LDAk #05 NEQ ,&!5 JCN #0003 ADD2 ,&continue JMP LDAk #00 SWP ;rx-node-sizes ADD2
&!5 LDAk #03 NEQ ,&!3 JCN #0002 ADD2 ,&continue JMP LDA #00 SWP ADD2 #0002 SUB2
&!3 INC2 ;set-next-addr JMP2
&continue ;set-next-addr JSR2 JMP2r
&unknown LDAk ;unknown-node-type ;error!! JSR2 &unknown LDAk ;unknown-node-type ;error!! JSR2
@set-next-or-addr ( target* addr* -> ) @set-next-or-addr ( target* addr* -> )
LDA2k #0000 EQU2 ( target addr addr=0? ) ,&is-zero JCN LDA2k #0000 EQU2 ( target addr addr=0? ) ,&is-zero JCN
LDA2 ;set-next-or JSR2 JMP2r LDA2 ;set-next-or JMP2
&is-zero STA2 JMP2r &is-zero STA2 JMP2r
( this is used when first building or-nodes ) ( this is used when first building or-nodes )
@ -630,7 +630,7 @@
@set-next-or ( target* regex* -> ) @set-next-or ( target* regex* -> )
LDAk #04 NEQ ,&!4 JCN LDAk #04 NEQ ,&!4 JCN
OVR2 OVR2 INC2 ;set-next-addr JSR2 OVR2 OVR2 INC2 ;set-next-addr JSR2
#0003 ADD2 ;set-next-or-addr JSR2 JMP2r #0003 ADD2 ;set-next-or-addr JMP2
&!4 ;set-next JMP2 &!4 ;set-next JMP2
( STACK OPERATIONS ) ( STACK OPERATIONS )
@ -663,16 +663,6 @@
STH2r STH2r ( restore str and regex ) STH2r STH2r ( restore str and regex )
JMP2r JMP2r
(
( -> size^ )
@frame-size
#00 STH ;stack-pos LDA2
&loop
#0004 SUB2 LDA2k #ffff EQU2 ,&done JCN
INCr ,&loop JMP
&done
STHr JMP2r )
( reset stack pointers ) ( reset stack pointers )
@reset-stack ( -> ) @reset-stack ( -> )
;stack-bot ;stack-pos STA2 JMP2r ( pos <- 0 ) ;stack-bot ;stack-pos STA2 JMP2r ( pos <- 0 )

15
repl-regex.tal
View File

@ -52,7 +52,8 @@
#00 ;ptr LDA2 STA ( null terminate string ) #00 ;ptr LDA2 STA ( null terminate string )
;ptr LDA2 ;buffer EQU2 STH ( stash is-empty? ) ;ptr LDA2 ;buffer EQU2 STH ( stash is-empty? )
;buffer ;ptr STA2 ( reset ptr ) ;buffer ;ptr STA2 ( reset ptr )
;buffer ;regex LDA2 ;match JSR2 ( match regex ) ( ;buffer ;regex LDA2 ;rx-match JSR2 ( match regex ) )
;buffer ;regex LDA2 ;rx-search JSR2 ( search regex )
;emit-byte JSR2 nl ( print result ) ;emit-byte JSR2 nl ( print result )
STHr ,&was-empty JCN STHr ,&was-empty JCN
;s-prompt ;println JSR2 ;s-prompt ;println JSR2
@ -100,9 +101,9 @@
&ok &ok
DUP2 ;emit-short JSR2 DUP2 ;emit-short JSR2
LIT ': emit! space LIT ': emit! space
LDAk #01 NEQ ,&!1 JCN #03 ;emit-n JSR2 ,&loop JMP LDAk #01 LTH ,&uu JCN
&!1 LDAk #02 NEQ ,&!2 JCN #03 ;emit-n JSR2 ,&loop JMP LDAk #09 GTH ,&uu JCN
&!2 LDAk #03 NEQ ,&!3 JCN #04 ;emit-n JSR2 ,&loop JMP LDAk #00 SWP ;rx-node-sizes ADD2
&!3 LDAk #04 NEQ ,&!4 JCN #05 ;emit-n JSR2 ,&loop JMP LDA ;emit-n JSR2 ,&loop JMP
&!4 LDAk #05 NEQ ,&!5 JCN #05 ;emit-n JSR2 ,&loop JMP &uu
&!5 ;unknown-node-type ;error!! JSR2 ;unknown-node-type ;error!! JSR2