fix a bunch of navigation bugs
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46f0f162eb
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femto.tal
109
femto.tal
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@ -195,48 +195,45 @@
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( FIXME: handle long lines )
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@forward
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;cursor/col LDA pen-col GTH ,&skip JCN
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;cursor/col LDA #01 ADD ;cursor/col STA
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;draw-statusbar JSR2
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;draw-cursor JSR2
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;cur-pos JSR2 ;last-pos JSR2 GTH2 ,&skip JCN
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;cur-col JSR2 ;cur-last JSR2 GTH ,&next-line JCN
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;cur-col JSR2 INC ;cursor/col STA
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;draw-statusbar JSR2 ;draw-cursor JSR2
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,&skip JMP
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&next-line #00 ;cursor/col STA ( TODO: need to ensure cursor is visible )
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;cursor/row LDA INC ;cursor/row STA
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;ensure-visible-cursor JSR2
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;draw-cursor JSR2
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&skip BRK
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( FIXME: handle long lines )
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@back
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;cursor/col LDA #01 LTH ,&skip JCN
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;cursor/col LDA #01 SUB ;cursor/col STA
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;cur-col JSR2 #01 LTH ,&skip JCN
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;cur-col JSR2 #01 SUB ;cursor/col STA
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;draw-statusbar JSR2
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;draw-cursor JSR2
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&skip BRK
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( TODO: integrate ensure-visible-cursor to move by half-screens )
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@up
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;cur-line-num JSR2 #0000 EQU2 ,&done JCN
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;cursor/row LDA #01 LTH ,&screen-up JCN
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;cursor/row LDA #01 SUB ;cursor/row STA
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;draw-statusbar JSR2
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;draw-cursor JSR2 BRK
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&screen-up
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;buffer/offset LDA2 DUP2 ;buffer/data EQU2 ,&done JCN
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#0001 SUB2
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&loop DUP2 ;buffer/data EQU2 ,&complete JCN
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#0001 SUB2 LDAk #0a NEQ ,&loop JCN
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INC2
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&complete ;buffer/offset STA2
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;buffer/line-offset LDA2k #0001 SUB2 SWP2 STA2
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;draw-all JSR2 BRK
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&done POP2 BRK
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;cur-line-num JSR2 #0001 SUB2
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;jump-to-line JSR2
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;draw-all JSR2
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&done BRK
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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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;ensure-visible-cursor JSR2
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;draw-statusbar JSR2
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;draw-cursor JSR2 BRK
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&screen-down
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#00 ;rel-line JSR2 ;line-len JSR2 INC2 ( add 1 for line ending )
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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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&done BRK
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@quit quit!
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@ -244,18 +241,17 @@
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@ignore BRK
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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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;cursor/col LDA INC ;cursor/col STA
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;cur-col JSR2 INC ;cursor/col STA
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;draw-all JSR2
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&skip BRK
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BRK
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@overwrite ( c^ -> )
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( @overwrite ( c^ -> )
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;cursor/col LDA pen-col GTH ,&skip JCN ( FIXME )
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;cur-pos JSR2 STA
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;cursor/col LDA #01 ADD ;cursor/col STA
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;draw-all JSR2
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&skip BRK
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&skip BRK )
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( TODO: handle last line )
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@newline ( c^ -> )
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@ -276,8 +272,7 @@
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@backspace ( -> )
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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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;cur-col JSR2 #01 SUB ;cursor/col STA
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,&finish JMP
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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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@ -323,7 +318,7 @@
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BRK
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@goto-line ( -> )
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#0060 ;jump-to-line JSR2
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#0016 ;jump-to-line JSR2
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;draw-all JSR2 BRK
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@jump-to-line ( n* -> )
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@ -335,17 +330,23 @@
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,&late JCN ( n n-rows/2 lines-rows )
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POP2 ,&finish JMP
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&early ( n rows/2 )
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POP2 ,&finish JCN
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POP2 #0000 ,&finish JMP ( n 0000 )
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&late ( n n-rows/2 lines-rows )
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NIP2 ,&finish JCN
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NIP2
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&finish ( n o )
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SUB2k STH2 DUP2
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;buffer/line-offset STA2
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;abs-line JSR2 ;buffer/offset STA2
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#00 ;cursor/col STA
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POP2 STH2r NIP ;cursor/row STA
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SUB2k STH2 DUP2 ( n o o [n-o] )
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;buffer/line-offset STA2 ( n o [n-o] )
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;abs-line JSR2 ;buffer/offset STA2 ( n [n-o] )
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#00 ;cursor/col STA ( n [n-o] )
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POP2 STH2r NIP ;cursor/row STA ( )
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JMP2r
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@ensure-visible-cursor
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;cursor/row LDA height LTH ,&noop JCN
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;cur-line-num JSR2 ;jump-to-line JSR2
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;draw-all JSR2
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&noop JMP2r
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@refresh
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;draw-all JSR2 BRK
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@ -404,7 +405,7 @@
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ansi LIT '2 emit LIT 'J emit JMP2r
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@draw-cursor
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;get-col JSR2 ;get-row JSR2
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;cur-col JSR2 ;cur-row JSR2
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;term-move-cursor JSR2 JMP2r
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@draw-statusbar
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@ -428,7 +429,7 @@
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;messages/lines ;print JSR2
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#20 emit
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LIT '( emit
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;cursor/col LDA INC ;emit-dec JSR2
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;cur-col JSR2 INC ;emit-dec JSR2
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LIT ', emit
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;cur-abs-row JSR2 INC2 ;emit-dec2 JSR2
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LIT ') emit
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@ -482,6 +483,9 @@
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@cur-len ( -> n* )
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;cur-line JSR2 ;line-len JSR2 JMP2r
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@cur-last ( -> n* )
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;cur-line JSR2 ;line-len JSR2 #0001 SUB2 NIP JMP2r
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@line-len ( s* -> n* )
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#0000 STH2
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&loop LDAk #00 EQU ,&end JCN
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@ -520,8 +524,11 @@
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@cur-line ( -> s* )
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;cursor/row LDA ;rel-line JSR2 JMP2r
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@cur-line-num ( -> n* )
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#00 ;cursor/row LDA ;buffer/line-offset LDA2 ADD2 JMP2r
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@cur-pos ( -> s* )
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;cur-line JSR2 #00 ;get-col JSR2 ADD2 JMP2r
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;cur-line JSR2 #00 ;cur-col JSR2 ADD2 JMP2r
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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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@ -531,8 +538,7 @@
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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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#0001 SUB2 SWP2 ( last addr [prev^] )
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;last-pos JSR2 SWP2 ( last addr [prev^] )
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&loop LTH2k ,&done JCN ( last addr [prev^] )
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LDAk STH SWPr ( last addr [prev^ curr^] )
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DUP2 STHr ( last addr addr prev^ [curr^] )
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@ -546,8 +552,7 @@
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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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;last-pos JSR2 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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@ -559,13 +564,13 @@
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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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( TODO: should be using cur-col and cur-row almost everywhere )
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( otherwise, bugs! )
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@get-col
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@cur-col
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;cursor/col LDA ;cur-len JSR2 NIP ;min JSR2 JMP2r
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@get-row
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@cur-row
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;cursor/row LDA JMP2r
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@last-pos
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@ -577,17 +582,17 @@
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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-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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@doc-last ( -> s* ) ;buffer/limit LDA2 #0001 SUB2 JMP2r )
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@page-start ( -> s* ) ;buffer/offset LDA2 JMP2r
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( @page-start ( -> s* ) ;buffer/offset LDA2 JMP2r
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@page-limit ( -> s* ) height ;rel-line JSR2 JMP2r
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@page-last ( -> s* ) height ;rel-line JSR2 #0001 SUB2 JMP2r
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@page-last ( -> s* ) height ;rel-line JSR2 #0001 SUB2 JMP2r )
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@line-start ( -> s* ) ;cursor/row LDA ;rel-line JSR2 JMP2r
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( @line-start ( -> s* ) ;cursor/row LDA ;rel-line JSR2 JMP2r
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@line-limit ( -> s* ) ;cursor/row LDA INC ;rel-line JSR2 JMP2r
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@line-last ( -> s* ) ;cursor/row LDA INC ;rel-line JSR2 #0001 SUB2 JMP2r
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@line-last ( -> s* ) ;cursor/row LDA INC ;rel-line JSR2 #0001 SUB2 JMP2r )
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@mod-div ( x^ y^ -> x%d x/y )
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DIVk STHk MUL SUB STHr JMP2r
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