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af39b37dd1
This is more than cosmetic, it's also highly usable. The presence or absence of the "ok" message allows us to know whether the command aborted. Previously, the "> " prompt appeared when the system expected a prompt in the INTERPRET context, whether the previous command aborted or not. Also, this allows us to get rid of that ugly FLAGS global variable.
38 lines
750 B
Forth
38 lines
750 B
Forth
( Words allowing printing strings. Require core )
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( This used to be in core, but some drivers providing EMIT
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are much much easier to write with access to core words,
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and these words below need EMIT... )
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: (print)
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BEGIN
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C@+ ( a+1 c )
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( exit if null )
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DUP NOT IF 2DROP EXIT THEN
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EMIT ( a )
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AGAIN
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;
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: ."
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34 , ( 34 == litWord )
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BEGIN
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C<
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( 34 is ASCII for " )
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DUP 34 = IF DROP 0 THEN
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DUP C,
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NOT UNTIL
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COMPILE (print)
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; IMMEDIATE
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: ABORT" [COMPILE] ." COMPILE ABORT ; IMMEDIATE
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: (uflw) ABORT" stack underflow" ;
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: BS 8 EMIT ;
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: LF 10 EMIT ;
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: CR 13 EMIT ;
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: CRLF CR LF ;
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: SPC 32 EMIT ;
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: (wnf) (print) SPC ABORT" word not found" ;
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: (ok) SPC ." ok" CRLF ;
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