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