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56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
/* j/6/ut_peel.c
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**
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*/
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#include "all.h"
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/* logic
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*/
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u3_noun
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_cqzu_peel(u3_noun van,
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u3_noun sut,
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u3_noun way,
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u3_noun met)
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{
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if ( c3__gold == met ) {
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return u3nc(c3y, c3y);
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}
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else switch ( way ) {
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default: return u3m_bail(c3__fail);
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case c3__both: return u3nc(c3n, c3n);
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case c3__free: return u3nc(c3y, c3y);
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case c3__read: return u3nc(((met == c3__zinc) ? c3y : c3n), c3n);
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case c3__rite: return u3nc(((met == c3__iron) ? c3y : c3n), c3n);
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}
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}
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/* boilerplate
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*/
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u3_noun
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u3wzu_peel(u3_noun cor)
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{
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u3_noun sut, way, met, van;
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if ( (c3n == u3r_mean(cor, u3x_sam_2, &way,
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u3x_sam_3, &met,
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u3x_con, &van,
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0)) ||
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(u3_none == (sut = u3r_at(u3x_sam, van))) )
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{
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return u3m_bail(c3__fail);
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} else {
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return _cqzu_peel(van, sut, way, met);
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}
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}
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u3_noun
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u3qzu_peel(u3_noun van,
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u3_noun sut,
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u3_noun way,
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u3_noun met)
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{
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return _cqzu_peel(van, sut, way, met);
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}
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