Annotation of gforth/chains.fs, revision 1.2
1.1 jwilke 1: \ chains.fs execution chains for gforth 21jun97jaw
2:
3: 0 [IF]
4: This defines execution chains.
5: The first application for this is building initialization chains:
6: Think of many modules or program parts, each of it with some specific
7: initialization code. If we hardcode the initialization routines into a
8: "master-init" we will get unflexible and are not able only to load some
9: specific modules...
10:
11: The chain is basicaly a linked-list. Define a Variable for the head of
12: linked-list. Name it "foo8" or "foo-chain" to indicate it is a execution
13: chain.
14:
15: You can add a word to the list with "' my-init foo8 chained". You can
16: execute all the code with "foo8 chainperform".
17: [THEN]
18:
1.2 ! pazsan 19: has? cross
! 20: [IF] e? compiler
! 21: [ELSE] true
! 22: [THEN]
! 23:
! 24: [IF] \ only needed with compiler
! 25:
1.1 jwilke 26: [IFUNDEF] linked
27: : linked here over @ a, swap ! ;
28: [THEN]
29:
30: \ generic chains
31:
32: : chained ( xt list -- ) \ gforth
33: linked , ;
1.2 ! pazsan 34:
! 35: [THEN]
1.1 jwilke 36:
37: : chainperform ( list -- ) \ gforth
38: BEGIN @ dup WHILE dup cell+ perform REPEAT drop ;
39:
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