fixed a few bugs, diagnosed more
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parent
233e8b07f2
commit
46f0f162eb
138
femto.tal
138
femto.tal
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@ -64,9 +64,10 @@
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%sp { #2018 DEO }
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%nl { #0a18 DEO }
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%cr { #0d18 DEO }
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%exit { #01 .System/halt DEO BRK }
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%ansi { #1b18 DEO #5b18 DEO }
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%quit! { #01 .System/halt DEO }
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%height { ;term/rows LDA2 NIP }
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%last-line { ;term/rows LDA2 #0001 SUB2 NIP }
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%pen-line { ;term/rows LDA2 #0002 SUB2 NIP }
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@ -82,13 +83,28 @@
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( ;setup-terminal-size JSR2 )
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BRK
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( ERROR HANDLING )
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( using error! will print the given message before causing )
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( the interpreter to halt. )
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@error! ( msg* -> )
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LIT '! emit sp
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&loop LDAk ,&continue JCN ,&done JMP
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&continue LDAk emit INC2 ,&loop JMP
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&done POP2 nl
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dbg BRK
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( error messages )
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@term-size-parse-error "error 20 "parsing 20 "term 20 "size 00
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@rel-line-error "invalid 20 "relative 20 "line 20 "number 00
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@open-file ( filename* -> )
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.File/name DEO2
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#8000 .File/length DEO2
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;buffer/data .File/read DEO2
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.File/success DEI2 #0000 GTH2 ,&ok JCN
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;messages/input-error ;print JSR2 nl exit
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;messages/input-error ;print JSR2 nl quit!
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( calculate buffer limit address using start + size )
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&ok .File/success DEI2 ;buffer/data ADD2 ;buffer/limit STA2
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@ -130,7 +146,8 @@
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;on-key .Console/vector DEO2
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;draw-all JSR2
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BRK
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&parse-error LDAk #00 #00 DIV
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&parse-error POP2 ;tmp/data LDA2
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;term-size-parse-error ;error! JMP2
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@setup-linecount ( -> )
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;buffer/data LIT2r 0001
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@ -158,8 +175,7 @@
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&execute ( we saw a newline, so do something )
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#00 ;tmp/pos LDA2 STA ( null terminate str )
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;tmp/data ;tmp/pos STA2 ( reset pos )
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( ;tmp/data ;open-file JSR2 ( open file ) )
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;tmp/data ;filename ;str-copy JSR2 ( )
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;tmp/data ;filename ;str-copy JSR2 ( open file )
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;filename ;open-file JSR2 ( open file )
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;setup-linecount JSR2 ( determine # of lines )
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;setup-terminal-size JSR2 ( detect terminal dimensions )
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@ -211,6 +227,7 @@
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( FIXME: need to handle 'end of buffer' stuff )
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@down
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;cur-abs-row JSR2 ;last-abs-row JSR2 EQU2 ,&done JCN
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;cursor/row LDA pen-line GTH ,&screen-down JCN
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;cursor/row LDA INC ;cursor/row STA
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;draw-statusbar JSR2
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@ -220,14 +237,12 @@
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;buffer/offset LDA2 ADD2 ;buffer/offset STA2
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;buffer/line-offset LDA2k INC2 SWP2 STA2
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;draw-all JSR2
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BRK
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&done BRK
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@quit exit
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@quit quit!
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@ignore BRK
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@die #00 #00 DIV
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@insert ( c^ -> )
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;cursor/col LDA pen-col GTH ,&skip JCN ( FIXME )
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;cur-pos JSR2 ;shift-right JSR2
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@ -251,13 +266,20 @@
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;draw-all JSR2
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BRK
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@at-buffer-start ( -> bool^ )
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;cur-pos JSR2 ;buffer/data EQU2 JMP2r
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@at-line-start ( -> bool^ )
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;cursor/col LDA #00 EQU JMP2r
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( TODO: handle first line )
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@backspace ( -> )
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;cur-pos JSR2 ;buffer/data EQU2 ,&skip JCN
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;cursor/col LDA #00 EQU ,&prev-line JCN
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;cursor/col LDA #01 SUB ;cursor/col STA
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;at-buffer-start JSR2 ,&skip JCN
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;at-line-start JSR2 ,&prev-line JCN
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;get-col JSR2 #01 SUB ;cursor/col STA
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( ;cursor/col LDA #01 SUB ;cursor/col STA )
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,&finish JMP
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&prev-line
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&prev-line ( TODO: what if row=0 but offset>0 ? )
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;cursor/row LDA #01 SUB ;cursor/row STA
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;cur-len JSR2 NIP ;cursor/col STA
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;buffer/line-count LDA2k #0001 SUB2 SWP2 STA2
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@ -266,12 +288,11 @@
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;draw-all JSR2
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&skip BRK
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( there's at least one bug -- join lots of lines near start )
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@delete ( -> )
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;last-pos JSR2 #0001 SUB2
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;cur-pos JSR2 LTH2k ,&skip JCN
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;cur-pos JSR2 LDAk STH
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;shift-left JSR2
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;last-pos JSR2 #0001 SUB2 ( lst-1 )
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;cur-pos JSR2 LTH2 ,&skip JCN
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;cur-pos JSR2 LDAk STH ( cur [c] )
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;shift-left JSR2 ( [c] )
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STHr #0a NEQ ,¬-newline JCN
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;buffer/line-count LDA2k #0001 SUB2 SWP2 STA2
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¬-newline ;draw-all JSR2
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@ -280,15 +301,18 @@
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@escape ( -> )
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#01 ;saw-esc STA BRK
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( TODO: small buffers )
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@goto-end ( -> )
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;buffer/line-count LDA2 ;term/rows LDA2 ( #00 #00 DIV ) SUB2
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DUP2 ;buffer/line-offset STA2
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;abs-line JSR2 ;buffer/offset STA2
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height #01 SUB ;cursor/row STA
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;cur-len JSR2 NIP ;cursor/col STA
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;draw-all JSR2
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BRK
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;more-than-one-screen JSR2 ,&large JCN
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;buffer/line-count LDA2 NIP #01 SUB ;cursor/row STA
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#0000 ,&continue JMP
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&large
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height #01 SUB ;cursor/row STA
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;buffer/line-count LDA2 ;term/rows LDA2 SUB2
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&continue
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DUP2 ;buffer/line-offset STA2
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;abs-line JSR2 ;buffer/offset STA2
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;cur-len JSR2 NIP ;cursor/col STA
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;draw-all JSR2 BRK
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@goto-start ( -> )
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;buffer/data ;buffer/offset STA2
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@ -322,6 +346,13 @@
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POP2 STH2r NIP ;cursor/row STA
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JMP2r
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@refresh
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;draw-all JSR2 BRK
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@debug
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;rel-line-error ;error! JMP2
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( #00 #00 DIV BRK )
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( TODO: M-v for page up and M-> for goto end )
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( M-f and M-b for next/previous word )
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( M-n and M-p for next/previous paragraph )
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@ -345,10 +376,12 @@
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.Console/read DEI #04 EQU ( C-d ) ;delete JCN2
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.Console/read DEI #05 EQU ( C-e ) ;eol JCN2
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.Console/read DEI #06 EQU ( C-f ) ;forward JCN2
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.Console/read DEI #0c EQU ( C-l ) ;refresh JCN2
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.Console/read DEI #0d EQU ( \r ) ;newline JCN2
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.Console/read DEI #0e EQU ( C-n ) ;down JCN2
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.Console/read DEI #10 EQU ( C-p ) ;up JCN2
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.Console/read DEI #18 EQU ( C-x ) ;quit JCN2
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.Console/read DEI #1a EQU ( C-z ) ;debug JCN2
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.Console/read DEI #1b EQU ( ESC ) ;escape JCN2
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.Console/read DEI #7f EQU ( DEL ) ;backspace JCN2
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.Console/read DEI #20 LTH ;ignore JCN2 ( ignore for now )
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@ -412,15 +445,23 @@
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@draw-all
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;term-erase-all JSR2
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#00 #00 ;term-move-cursor JSR2
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#00 STH
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#01 STH
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;buffer/offset LDA2
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&loop
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LDAk #00 EQU ,&eof JCN
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LDAk #0a EQU ,&eol JCN
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LDAk emit INC2 ,&loop JMP
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&eol INCr STHkr last-line ( #17 ) GTH ,&eof JCN
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cr nl INC2 ,&loop JMP
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&eof POP2 POPr
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&eol INCr STHkr height GTH ,&done JCN
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cr nl INC2 ,&loop JMP
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&eof
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ansi LIT '3 emit LIT '1 emit LIT 'm emit
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&eof-loop
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STHkr height GTH ,&done JCN
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cr nl
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LIT '~ emit INCr
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,&eof-loop JMP
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&done POP2 POPr
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ansi LIT '0 emit LIT 'm emit
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;draw-statusbar JSR2
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;draw-cursor JSR2
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JMP2r
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@ -465,6 +506,7 @@
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@rel-line ( y^ -> s* )
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#00 SWP SUB STH ( [-y] )
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;buffer/offset LDA2 ( addr* )
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STHkr #00 EQU ,&done JCN ( addr [-y] )
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&newline ( addr [-y] )
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STHkr ,&loop JCN ,&done JMP
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&loop ( addr [-y] )
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@ -473,7 +515,7 @@
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INC2 ,&loop JMP ( addr+1 [-y] )
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&found INC2 INCr ( addr+1 [-y+1] ) ,&newline JMP
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&done POPr JMP2r
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¬-found #00 #00 DIV
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¬-found ;rel-line-error ;error! JMP2
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@cur-line ( -> s* )
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;cursor/row LDA ;rel-line JSR2 JMP2r
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@ -484,6 +526,9 @@
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@cur-abs-row ( -> n* )
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;buffer/line-offset LDA2 #00 ;cursor/row LDA ADD2 JMP2r
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@last-abs-row ( -> n* )
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;buffer/line-count LDA2 #0001 SUB2 JMP2r
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@shift-right ( c^ addr* -> )
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ROT STH ( addr [prev^] )
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;buffer/limit LDA2 ( addr limit [prev^] )
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@ -499,19 +544,24 @@
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;buffer/limit STA2 ( )
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JMP2r
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( TODO: change last/addr order and GTH -> LTH to remove hack )
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@shift-left ( addr* -> )
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;buffer/limit LDA2 ( addr limit )
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#0001 SUB2 SWP2 ( last addr )
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&loop GTH2k ,&next JCN ( last addr )
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,&done JMP ( last addr )
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&next DUP2 INC2 LDAk ( last addr addr+1 c1^ )
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STH SWP2 STHr ( last addr+1 addr c1^ )
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ROT ROT ( last addr+1 c1^ addr )
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STA ,&loop JMP ( last addr+1 )
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&done POP2 ( last )
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;buffer/limit STA2 ( )
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;buffer/limit LDA2 ( addr limit )
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#0001 SUB2 SWP2 ( last addr )
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&loop GTH2k ,&next JCN ( last addr )
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,&done JMP ( last addr )
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&next DUP2 INC2 LDAk ( last addr addr+1 c1^ )
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STH SWP2 STHr ( last addr+1 addr c1^ )
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ROT ROT ( last addr+1 c1^ addr )
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STA ,&loop JMP ( last addr+1 )
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&done POP2 ( last )
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;buffer/limit STA2 ( )
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#00 ;buffer/limit LDA2 STA ( ensure null termination )
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JMP2r
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( TODO: should be using get-col and get-row almost everywhere )
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( otherwise, bugs! )
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@get-col
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;cursor/col LDA ;cur-len JSR2 NIP ;min JSR2 JMP2r
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@ -521,6 +571,12 @@
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@last-pos
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;buffer/limit LDA2 #0001 SUB2 JMP2r
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@more-than-one-screen ( -> bool^ )
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;buffer/line-count LDA2 ;term/rows LDA2 GTH2 JMP2r
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@fits-in-one-screen ( -> bool^ )
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;buffer/line-count LDA2 ;term/rows LDA2 INC2 LTH2 JMP2r
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@doc-start ( -> s* ) ;buffer/data JMP2r
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@doc-limit ( -> s* ) ;buffer/limit LDA2 JMP2r
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@doc-last ( -> s* ) ;buffer/limit LDA2 #0001 SUB2 JMP2r
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