19 lines
419 B
Forth
19 lines
419 B
Forth
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( requires core )
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: (parsec) ( a -- n f )
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( apostrophe is ASCII 39 )
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DUP C@ 39 = NOT IF 0 EXIT THEN ( -- a 0 )
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DUP 2 + C@ 39 = NOT IF 0 EXIT THEN ( -- a 0 )
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( surrounded by apos, good, return )
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1 + C@ 1 ( -- n 1 )
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;
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: (parse) ( a -- n )
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(parsec) NOT SKIP? EXIT
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(parsed) NOT SKIP? EXIT
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( nothing works )
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ABORT" unknown word! "
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;
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' (parse) (parse*) !
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