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94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/* j/6/ut_park.c
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**
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** This file is in the public domain.
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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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_cqfu_park(
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u3_noun van,
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u3_noun sut,
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u3_noun way,
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u3_atom axe)
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{
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if ( c3n == u3du(sut) || c3__core != u3h(sut) ) {
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return u3m_bail(c3__fail);
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}
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// else if ( c3n == u3j_hook(u3k(van), "vet") ) {
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else if ( c3n == u3r_at(u3_cqfu_van_vet, van) ) {
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return c3y;
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}
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else {
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u3_noun p_sut, q_sut, pq_sut;
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u3x_cell(u3t(sut), &p_sut, &q_sut);
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u3x_cell(q_sut, &pq_sut, 0);
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if ( c3__both == way ) {
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if ( c3__gold == pq_sut ) {
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return c3y;
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} else return c3n;
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}
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if ( c3__read == way ) {
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switch ( pq_sut ) {
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default: return u3m_bail(c3__fail);
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case c3__gold: return c3y;
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case c3__lead: return c3n;
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case c3__iron: return c3n;
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case c3__zinc: return
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c3a(!(u3r_sing(1, axe)),
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u3r_sing(2, u3_cqc_cap(axe)));
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}
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}
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else if ( c3__rite == way ) {
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switch ( pq_sut ) {
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default: return u3m_bail(c3__fail);
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case c3__gold: return c3y;
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case c3__lead: return c3n;
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case c3__iron: return
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c3a(!(u3r_sing(1, axe)),
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u3r_sing(2, u3_cqc_cap(axe)));
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case c3__zinc: return c3n;
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}
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}
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else if ( c3__free == way ) { return c3y; }
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else return u3m_bail(c3__fail);
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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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u3_cwfu_park(
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u3_noun cor)
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{
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u3_noun sut, way, axe, van;
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if ( (c3n == u3r_mean(cor, u3v_sam_2, &way,
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u3v_sam_3, &axe,
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u3v_con, &van,
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0)) ||
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(c3n == u3ud(axe)) ||
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(u3_none == (sut = u3r_at(u3v_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 _cqfu_park(van, sut, way, axe);
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}
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}
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u3_noun
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u3_cqfu_park(u3_noun van,
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u3_noun sut,
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u3_noun way,
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u3_noun axe)
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{
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return _cqfu_park(van, sut, way, axe);
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}
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