\ chains.fs execution chains for gforth 21jun97jaw
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This defines execution chains.
The first application for this is building initialization chains:
Think of many modules or program parts, each of it with some specific
initialization code. If we hardcode the initialization routines into a
"master-init" we will get unflexible and are not able only to load some
The chain is basicaly a linked-list. Define a Variable for the head of
linked-list. Name it "foo8" or "foo-chain" to indicate it is a execution
You can add a word to the list with "' my-init foo8 chained". You can
execute all the code with "foo8 chainperform".
[IF] e? compiler
[IF] \ only needed with compiler
: linked here over @ a, swap ! ;
\ generic chains
: chained ( xt list -- ) \ gforth
linked , ;
: chainperform ( list -- ) \ gforth
BEGIN @ dup WHILE dup cell+ perform REPEAT drop ;