mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-28 02:38:05 +11:00
17 lines
634 B
Plaintext
17 lines
634 B
Plaintext
|
Compilation vs meta-compilation
|
||
|
|
|
||
|
|
Compilation vs meta-compilation. When you compile a word with
|
||
|
|
"[COMPILE] foo", its straightforward: It writes down to HERE
|
||
|
|
wither the address of the word or a number literal.
|
||
|
|
|
||
|
|
When you *meta* compile, it's a bit more mind blowing. It
|
||
|
|
fetches the address of the word specified by the caller, then
|
||
|
|
writes that number as a literal, followed by a reference to
|
||
|
|
",".
|
||
|
|
|
||
|
|
Example: ": foo [COMPILE] bar;" is the equivalent of ": foo bar
|
||
|
|
;" if bar is not an immediate. However, ": foo COMPILE bar ;"
|
||
|
|
is the equivalent of ": foo ['] bar , ;". Got it?
|
||
|
|
|
||
|
|
Meta-compile only works with real words, not number literals.
|