Home » Archimedes archive » Acorn User » AU 1997-10 A.adf » Extras » Apple][e/PD/BOB/ARMBOB/!ArmBob/progs/h/draw/object
Apple][e/PD/BOB/ARMBOB/!ArmBob/progs/h/draw/object
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 1997-10 A.adf » Extras |
| Filename: | Apple][e/PD/BOB/ARMBOB/!ArmBob/progs/h/draw/object |
| Read OK: | ✔ |
| File size: | 04DC bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
File contents
/*******************************************************
* *
* draw.object Library GCW 27/12/94 *
* *
*******************************************************/
/* ------------ object class -------------------- */
/* Base class for storing data in string arrays */
class object
{
obj_end, obj_start,obj_string, p;
}
/* ----------- Object methods ----------------- */
object::object(size)
{
if (!typeof(p))
{
p = obj_start = @(obj_string = newstring(size)); // first object
obj_end = obj_start + size;
}
return this;
}
object::start()
{ return obj_start; }
object::str()
{ return obj_string; }
object::here()
{ return p; }
object::push_word(w)
{
��(p,w);
p += 4;
if (p >= obj_end)
quit("overflow\n");
}
object::push_byte(c)
{
``(p++,c);
if (p >= obj_end)
quit("overflow\n");
}
object::push_string(s)
{
local len;
if (p + (len = sizeof(s)) >= obj_end)
quit("overflow\n");
$$(p,s); p += len;
}
object::read(offset)
{ return �(obj_start+offset); }
object::write(offset,data)
{ ��(obj_start+offset,data); }
/* ------------ end of object definitions ------------- */
00000000 2f 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 |****************|
*
00000030 2a 2a 2a 2a 2a 2a 2a 2a 0a 20 2a 20 20 20 20 20 |********. * |
00000040 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
00000070 2a 0a 20 2a 20 20 64 72 61 77 2e 6f 62 6a 65 63 |*. * draw.objec|
00000080 74 20 4c 69 62 72 61 72 79 20 20 20 20 20 20 20 |t Library |
00000090 20 47 43 57 20 20 32 37 2f 31 32 2f 39 34 20 20 | GCW 27/12/94 |
000000a0 20 20 20 20 20 20 20 20 20 2a 0a 20 2a 20 20 20 | *. * |
000000b0 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 20 | |
*
000000e0 20 20 2a 0a 20 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a | *. ***********|
000000f0 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a |****************|
*
00000110 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2f 0a 0a 2f |************/../|
00000120 2a 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 20 6f |* ------------ o|
00000130 62 6a 65 63 74 20 63 6c 61 73 73 20 2d 2d 2d 2d |bject class ----|
00000140 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |----------------|
00000150 20 2a 2f 0a 0a 2f 2a 20 42 61 73 65 20 63 6c 61 | */../* Base cla|
00000160 73 73 20 66 6f 72 20 73 74 6f 72 69 6e 67 20 64 |ss for storing d|
00000170 61 74 61 20 69 6e 20 73 74 72 69 6e 67 20 61 72 |ata in string ar|
00000180 72 61 79 73 20 20 20 2a 2f 0a 0a 63 6c 61 73 73 |rays */..class|
00000190 20 6f 62 6a 65 63 74 0a 7b 0a 20 6f 62 6a 5f 65 | object.{. obj_e|
000001a0 6e 64 2c 20 6f 62 6a 5f 73 74 61 72 74 2c 6f 62 |nd, obj_start,ob|
000001b0 6a 5f 73 74 72 69 6e 67 2c 20 70 3b 0a 7d 0a 0a |j_string, p;.}..|
000001c0 2f 2a 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 20 4f |/* ----------- O|
000001d0 62 6a 65 63 74 20 6d 65 74 68 6f 64 73 20 2d 2d |bject methods --|
000001e0 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 20 |--------------- |
000001f0 2a 2f 0a 0a 6f 62 6a 65 63 74 3a 3a 6f 62 6a 65 |*/..object::obje|
00000200 63 74 28 73 69 7a 65 29 0a 7b 0a 20 69 66 20 28 |ct(size).{. if (|
00000210 21 74 79 70 65 6f 66 28 70 29 29 0a 20 7b 0a 20 |!typeof(p)). {. |
00000220 20 20 20 70 20 3d 20 6f 62 6a 5f 73 74 61 72 74 | p = obj_start|
00000230 20 3d 20 40 28 6f 62 6a 5f 73 74 72 69 6e 67 20 | = @(obj_string |
00000240 3d 20 6e 65 77 73 74 72 69 6e 67 28 73 69 7a 65 |= newstring(size|
00000250 29 29 3b 20 20 20 20 20 2f 2f 20 66 69 72 73 74 |)); // first|
00000260 20 6f 62 6a 65 63 74 0a 20 20 20 20 6f 62 6a 5f | object. obj_|
00000270 65 6e 64 20 3d 20 6f 62 6a 5f 73 74 61 72 74 20 |end = obj_start |
00000280 2b 20 73 69 7a 65 3b 0a 20 7d 0a 20 72 65 74 75 |+ size;. }. retu|
00000290 72 6e 20 74 68 69 73 3b 0a 7d 0a 0a 6f 62 6a 65 |rn this;.}..obje|
000002a0 63 74 3a 3a 73 74 61 72 74 28 29 0a 7b 20 72 65 |ct::start().{ re|
000002b0 74 75 72 6e 20 6f 62 6a 5f 73 74 61 72 74 3b 20 |turn obj_start; |
000002c0 7d 0a 0a 6f 62 6a 65 63 74 3a 3a 73 74 72 28 29 |}..object::str()|
000002d0 0a 7b 20 72 65 74 75 72 6e 20 6f 62 6a 5f 73 74 |.{ return obj_st|
000002e0 72 69 6e 67 3b 20 7d 0a 0a 6f 62 6a 65 63 74 3a |ring; }..object:|
000002f0 3a 68 65 72 65 28 29 0a 7b 20 72 65 74 75 72 6e |:here().{ return|
00000300 20 70 3b 20 7d 0a 0a 6f 62 6a 65 63 74 3a 3a 70 | p; }..object::p|
00000310 75 73 68 5f 77 6f 72 64 28 77 29 0a 7b 20 0a 20 |ush_word(w).{ . |
00000320 a3 a3 28 70 2c 77 29 3b 0a 20 70 20 2b 3d 20 34 |..(p,w);. p += 4|
00000330 3b 0a 20 69 66 20 28 70 20 3e 3d 20 6f 62 6a 5f |;. if (p >= obj_|
00000340 65 6e 64 29 0a 20 20 20 20 71 75 69 74 28 22 6f |end). quit("o|
00000350 76 65 72 66 6c 6f 77 5c 6e 22 29 3b 0a 7d 0a 0a |verflow\n");.}..|
00000360 6f 62 6a 65 63 74 3a 3a 70 75 73 68 5f 62 79 74 |object::push_byt|
00000370 65 28 63 29 0a 7b 0a 20 60 60 28 70 2b 2b 2c 63 |e(c).{. ``(p++,c|
00000380 29 3b 0a 20 69 66 20 28 70 20 3e 3d 20 6f 62 6a |);. if (p >= obj|
00000390 5f 65 6e 64 29 0a 20 20 20 20 71 75 69 74 28 22 |_end). quit("|
000003a0 6f 76 65 72 66 6c 6f 77 5c 6e 22 29 3b 0a 7d 0a |overflow\n");.}.|
000003b0 0a 6f 62 6a 65 63 74 3a 3a 70 75 73 68 5f 73 74 |.object::push_st|
000003c0 72 69 6e 67 28 73 29 0a 7b 0a 20 6c 6f 63 61 6c |ring(s).{. local|
000003d0 20 6c 65 6e 3b 0a 20 69 66 20 28 70 20 2b 20 28 | len;. if (p + (|
000003e0 6c 65 6e 20 3d 20 73 69 7a 65 6f 66 28 73 29 29 |len = sizeof(s))|
000003f0 20 3e 3d 20 6f 62 6a 5f 65 6e 64 29 0a 20 20 20 | >= obj_end). |
00000400 20 71 75 69 74 28 22 6f 76 65 72 66 6c 6f 77 5c | quit("overflow\|
00000410 6e 22 29 3b 0a 20 24 24 28 70 2c 73 29 3b 20 70 |n");. $$(p,s); p|
00000420 20 2b 3d 20 6c 65 6e 3b 20 20 20 20 0a 7d 0a 0a | += len; .}..|
00000430 6f 62 6a 65 63 74 3a 3a 72 65 61 64 28 6f 66 66 |object::read(off|
00000440 73 65 74 29 0a 7b 20 72 65 74 75 72 6e 20 a3 28 |set).{ return .(|
00000450 6f 62 6a 5f 73 74 61 72 74 2b 6f 66 66 73 65 74 |obj_start+offset|
00000460 29 3b 20 7d 0a 0a 6f 62 6a 65 63 74 3a 3a 77 72 |); }..object::wr|
00000470 69 74 65 28 6f 66 66 73 65 74 2c 64 61 74 61 29 |ite(offset,data)|
00000480 0a 7b 20 a3 a3 28 6f 62 6a 5f 73 74 61 72 74 2b |.{ ..(obj_start+|
00000490 6f 66 66 73 65 74 2c 64 61 74 61 29 3b 20 7d 0a |offset,data); }.|
000004a0 0a 2f 2a 20 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d 2d |./* ------------|
000004b0 20 65 6e 64 20 6f 66 20 6f 62 6a 65 63 74 20 64 | end of object d|
000004c0 65 66 69 6e 69 74 69 6f 6e 73 20 2d 2d 2d 2d 2d |efinitions -----|
000004d0 2d 2d 2d 2d 2d 2d 2d 2d 20 2a 2f 0a |-------- */.|
000004dc 
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