Home » Archimedes archive » Acorn User » AU 1994-06.adf » !StarInfo_StarInfo » NCW/LocalLabel
NCW/LocalLabel
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Acorn User » AU 1994-06.adf » !StarInfo_StarInfo |
| Filename: | NCW/LocalLabel |
| Read OK: | ✔ |
| File size: | 0619 bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
;************************************************************************** ;These macros are for making named local labels and registers in code and in ;MACROs. Just call LocalLabels when you want a new set of local labels. ;Use like ; ; LocalLabels ;counter$l RN 6 ;loop$l SUBS counter$l,counter$l,#1 ; BGT loop$l ; ;The labels will be local between each call to LocalLabels ; ;In a macro just write ; ; MACRO ;$label a_macro ;$label MacroLabels ; ; ;Body of macro using local objects ;counter$l RN 6 ;loop$l SUBS counter$l,counter$l,#1 ; BGT loop$l ; ; MLEND ; MEND ; ;You can pass local labels into macros either as the label or as an argument ;and they will do what you want even if the macro uses local labels. This is ;because strings are substituted when they are passed, not when used. ; ;You can also use the labels in the forms local$l or $l.local ;you might like to add a _ : local_$l whatever you fancy just be consistent! ;************************************************************************** GBLA LocalLabel GBLA LocalLabelLevel GBLA LabelNumber GBLS l MACRO $label LocalLabels $label LabelNumber SETA LocalLabel l SETS "Local$LabelNumber" LocalLabel SETA LocalLabel + 1 MEND MACRO $label MacroLabels $label GBLA MacroLabel$LocalLabelLevel MacroLabel$LocalLabelLevel SETA LabelNumber LocalLabelLevel SETA LocalLabelLevel + 1 LocalLabels MEND MACRO $label MLEND $label LocalLabelLevel SETA LocalLabelLevel - 1 LabelNumber SETA MacroLabel$LocalLabelLevel l SETS "Local$LabelNumber" MEND END
00000000 3b 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a |;***************| 00000010 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a |****************| * 00000040 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 0a 3b 54 68 65 |***********.;The| 00000050 73 65 20 6d 61 63 72 6f 73 20 61 72 65 20 66 6f |se macros are fo| 00000060 72 20 6d 61 6b 69 6e 67 20 6e 61 6d 65 64 20 6c |r making named l| 00000070 6f 63 61 6c 20 6c 61 62 65 6c 73 20 61 6e 64 20 |ocal labels and | 00000080 72 65 67 69 73 74 65 72 73 20 69 6e 20 63 6f 64 |registers in cod| 00000090 65 20 61 6e 64 20 69 6e 0a 3b 4d 41 43 52 4f 73 |e and in.;MACROs| 000000a0 2e 20 20 4a 75 73 74 20 63 61 6c 6c 20 4c 6f 63 |. Just call Loc| 000000b0 61 6c 4c 61 62 65 6c 73 20 77 68 65 6e 20 79 6f |alLabels when yo| 000000c0 75 20 77 61 6e 74 20 61 20 6e 65 77 20 73 65 74 |u want a new set| 000000d0 20 6f 66 20 6c 6f 63 61 6c 20 6c 61 62 65 6c 73 | of local labels| 000000e0 2e 0a 3b 55 73 65 20 6c 69 6b 65 0a 3b 0a 3b 09 |..;Use like.;.;.| 000000f0 09 4c 6f 63 61 6c 4c 61 62 65 6c 73 0a 3b 63 6f |.LocalLabels.;co| 00000100 75 6e 74 65 72 24 6c 09 52 4e 09 36 0a 3b 6c 6f |unter$l.RN.6.;lo| 00000110 6f 70 24 6c 09 09 53 55 42 53 09 63 6f 75 6e 74 |op$l..SUBS.count| 00000120 65 72 24 6c 2c 63 6f 75 6e 74 65 72 24 6c 2c 23 |er$l,counter$l,#| 00000130 31 0a 3b 09 09 42 47 54 09 6c 6f 6f 70 24 6c 0a |1.;..BGT.loop$l.| 00000140 3b 0a 3b 54 68 65 20 6c 61 62 65 6c 73 20 77 69 |;.;The labels wi| 00000150 6c 6c 20 62 65 20 6c 6f 63 61 6c 20 62 65 74 77 |ll be local betw| 00000160 65 65 6e 20 65 61 63 68 20 63 61 6c 6c 20 74 6f |een each call to| 00000170 20 4c 6f 63 61 6c 4c 61 62 65 6c 73 0a 3b 0a 3b | LocalLabels.;.;| 00000180 49 6e 20 61 20 6d 61 63 72 6f 20 6a 75 73 74 20 |In a macro just | 00000190 77 72 69 74 65 0a 3b 0a 3b 09 09 4d 41 43 52 4f |write.;.;..MACRO| 000001a0 0a 3b 24 6c 61 62 65 6c 09 09 61 5f 6d 61 63 72 |.;$label..a_macr| 000001b0 6f 0a 3b 24 6c 61 62 65 6c 09 09 4d 61 63 72 6f |o.;$label..Macro| 000001c0 4c 61 62 65 6c 73 0a 3b 0a 3b 09 09 3b 42 6f 64 |Labels.;.;..;Bod| 000001d0 79 20 6f 66 20 6d 61 63 72 6f 20 75 73 69 6e 67 |y of macro using| 000001e0 20 6c 6f 63 61 6c 20 6f 62 6a 65 63 74 73 0a 3b | local objects.;| 000001f0 63 6f 75 6e 74 65 72 24 6c 09 52 4e 09 36 0a 3b |counter$l.RN.6.;| 00000200 6c 6f 6f 70 24 6c 09 09 53 55 42 53 09 63 6f 75 |loop$l..SUBS.cou| 00000210 6e 74 65 72 24 6c 2c 63 6f 75 6e 74 65 72 24 6c |nter$l,counter$l| 00000220 2c 23 31 0a 3b 09 09 42 47 54 09 6c 6f 6f 70 24 |,#1.;..BGT.loop$| 00000230 6c 0a 3b 0a 3b 09 09 4d 4c 45 4e 44 0a 3b 09 09 |l.;.;..MLEND.;..| 00000240 4d 45 4e 44 0a 3b 0a 3b 59 6f 75 20 63 61 6e 20 |MEND.;.;You can | 00000250 70 61 73 73 20 6c 6f 63 61 6c 20 6c 61 62 65 6c |pass local label| 00000260 73 20 69 6e 74 6f 20 6d 61 63 72 6f 73 20 65 69 |s into macros ei| 00000270 74 68 65 72 20 61 73 20 74 68 65 20 6c 61 62 65 |ther as the labe| 00000280 6c 20 6f 72 20 61 73 20 61 6e 20 61 72 67 75 6d |l or as an argum| 00000290 65 6e 74 0a 3b 61 6e 64 20 74 68 65 79 20 77 69 |ent.;and they wi| 000002a0 6c 6c 20 64 6f 20 77 68 61 74 20 79 6f 75 20 77 |ll do what you w| 000002b0 61 6e 74 20 65 76 65 6e 20 69 66 20 74 68 65 20 |ant even if the | 000002c0 6d 61 63 72 6f 20 75 73 65 73 20 6c 6f 63 61 6c |macro uses local| 000002d0 20 6c 61 62 65 6c 73 2e 20 20 54 68 69 73 20 69 | labels. This i| 000002e0 73 0a 3b 62 65 63 61 75 73 65 20 73 74 72 69 6e |s.;because strin| 000002f0 67 73 20 61 72 65 20 73 75 62 73 74 69 74 75 74 |gs are substitut| 00000300 65 64 20 77 68 65 6e 20 74 68 65 79 20 61 72 65 |ed when they are| 00000310 20 70 61 73 73 65 64 2c 20 6e 6f 74 20 77 68 65 | passed, not whe| 00000320 6e 20 75 73 65 64 2e 0a 3b 0a 3b 59 6f 75 20 63 |n used..;.;You c| 00000330 61 6e 20 61 6c 73 6f 20 75 73 65 20 74 68 65 20 |an also use the | 00000340 6c 61 62 65 6c 73 20 69 6e 20 74 68 65 20 66 6f |labels in the fo| 00000350 72 6d 73 20 6c 6f 63 61 6c 24 6c 20 6f 72 20 24 |rms local$l or $| 00000360 6c 2e 6c 6f 63 61 6c 0a 3b 79 6f 75 20 6d 69 67 |l.local.;you mig| 00000370 68 74 20 6c 69 6b 65 20 74 6f 20 61 64 64 20 61 |ht like to add a| 00000380 20 5f 20 3a 20 6c 6f 63 61 6c 5f 24 6c 20 20 77 | _ : local_$l w| 00000390 68 61 74 65 76 65 72 20 79 6f 75 20 66 61 6e 63 |hatever you fanc| 000003a0 79 20 6a 75 73 74 20 62 65 20 63 6f 6e 73 69 73 |y just be consis| 000003b0 74 65 6e 74 21 0a 3b 2a 2a 2a 2a 2a 2a 2a 2a 2a |tent!.;*********| 000003c0 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a |****************| * 00000400 2a 0a 0a 09 09 47 42 4c 41 09 4c 6f 63 61 6c 4c |*....GBLA.LocalL| 00000410 61 62 65 6c 0a 09 09 47 42 4c 41 09 4c 6f 63 61 |abel...GBLA.Loca| 00000420 6c 4c 61 62 65 6c 4c 65 76 65 6c 0a 09 09 47 42 |lLabelLevel...GB| 00000430 4c 41 09 4c 61 62 65 6c 4e 75 6d 62 65 72 0a 09 |LA.LabelNumber..| 00000440 09 47 42 4c 53 09 6c 0a 0a 09 09 4d 41 43 52 4f |.GBLS.l....MACRO| 00000450 0a 24 6c 61 62 65 6c 09 09 4c 6f 63 61 6c 4c 61 |.$label..LocalLa| 00000460 62 65 6c 73 0a 24 6c 61 62 65 6c 0a 4c 61 62 65 |bels.$label.Labe| 00000470 6c 4e 75 6d 62 65 72 09 53 45 54 41 09 4c 6f 63 |lNumber.SETA.Loc| 00000480 61 6c 4c 61 62 65 6c 0a 6c 09 09 53 45 54 53 09 |alLabel.l..SETS.| 00000490 22 4c 6f 63 61 6c 24 4c 61 62 65 6c 4e 75 6d 62 |"Local$LabelNumb| 000004a0 65 72 22 0a 4c 6f 63 61 6c 4c 61 62 65 6c 09 53 |er".LocalLabel.S| 000004b0 45 54 41 09 4c 6f 63 61 6c 4c 61 62 65 6c 20 2b |ETA.LocalLabel +| 000004c0 20 31 0a 09 09 4d 45 4e 44 0a 0a 0a 09 09 4d 41 | 1...MEND.....MA| 000004d0 43 52 4f 0a 24 6c 61 62 65 6c 09 09 4d 61 63 72 |CRO.$label..Macr| 000004e0 6f 4c 61 62 65 6c 73 0a 24 6c 61 62 65 6c 0a 09 |oLabels.$label..| 000004f0 09 47 42 4c 41 09 4d 61 63 72 6f 4c 61 62 65 6c |.GBLA.MacroLabel| 00000500 24 4c 6f 63 61 6c 4c 61 62 65 6c 4c 65 76 65 6c |$LocalLabelLevel| 00000510 0a 4d 61 63 72 6f 4c 61 62 65 6c 24 4c 6f 63 61 |.MacroLabel$Loca| 00000520 6c 4c 61 62 65 6c 4c 65 76 65 6c 09 53 45 54 41 |lLabelLevel.SETA| 00000530 09 4c 61 62 65 6c 4e 75 6d 62 65 72 0a 4c 6f 63 |.LabelNumber.Loc| 00000540 61 6c 4c 61 62 65 6c 4c 65 76 65 6c 09 53 45 54 |alLabelLevel.SET| 00000550 41 09 4c 6f 63 61 6c 4c 61 62 65 6c 4c 65 76 65 |A.LocalLabelLeve| 00000560 6c 20 2b 20 31 0a 09 09 4c 6f 63 61 6c 4c 61 62 |l + 1...LocalLab| 00000570 65 6c 73 0a 09 09 4d 45 4e 44 0a 0a 0a 09 09 4d |els...MEND.....M| 00000580 41 43 52 4f 0a 24 6c 61 62 65 6c 09 09 4d 4c 45 |ACRO.$label..MLE| 00000590 4e 44 0a 24 6c 61 62 65 6c 0a 4c 6f 63 61 6c 4c |ND.$label.LocalL| 000005a0 61 62 65 6c 4c 65 76 65 6c 09 53 45 54 41 09 4c |abelLevel.SETA.L| 000005b0 6f 63 61 6c 4c 61 62 65 6c 4c 65 76 65 6c 20 2d |ocalLabelLevel -| 000005c0 20 31 0a 4c 61 62 65 6c 4e 75 6d 62 65 72 09 53 | 1.LabelNumber.S| 000005d0 45 54 41 09 4d 61 63 72 6f 4c 61 62 65 6c 24 4c |ETA.MacroLabel$L| 000005e0 6f 63 61 6c 4c 61 62 65 6c 4c 65 76 65 6c 0a 6c |ocalLabelLevel.l| 000005f0 09 09 53 45 54 53 09 22 4c 6f 63 61 6c 24 4c 61 |..SETS."Local$La| 00000600 62 65 6c 4e 75 6d 62 65 72 22 0a 09 09 4d 45 4e |belNumber"...MEN| 00000610 44 0a 0a 09 09 45 4e 44 0a |D....END.| 00000619
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