mirror of
https://github.com/hsoft/collapseos.git
synced 2024-12-05 13:28:05 +11:00
17 lines
693 B
Plaintext
17 lines
693 B
Plaintext
|
I/O
|
||
|
|
|
||
|
|
A little word about inputs. There are two kind of inputs:
|
||
|
|
direct and buffered. As a general rule, we read line in a
|
||
|
|
buffer, then feed words in it to the interpreter. That's what
|
||
|
|
"WORD" does. If it's at the End Of Line, it blocks and wait
|
||
|
|
until another line is entered.
|
||
|
|
|
||
|
|
KEY input, however, is direct. Regardless of the input buffer's
|
||
|
|
state, KEY will return the next typed key.
|
||
|
|
|
||
|
|
PARSING AND BOOTSTRAP: Parsing number literal is a very "core"
|
||
|
|
activity of Forth, and therefore generally seen as having to be
|
||
|
|
implemented in native code. However, Collapse OS' Forth
|
||
|
|
supports many kinds of literals: decimal, hex, char, binary.
|
||
|
|
This incurs a significant complexity penalty. (cont.)
|