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105 lines
2.5 KiB
C
105 lines
2.5 KiB
C
/* j/6/tock.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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/* internals
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*/
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static u3_noun
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_tock_in(
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u3_noun van,
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u3_noun sut,
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u3_noun peh,
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u3_noun mur,
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u3_noun men)
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{
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if ( u3_no == u3du(men) ) {
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return u3nc(u3_nul, u3_nul);
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}
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else {
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u3_noun i_men = u3h(men);
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u3_noun pi_men = u3h(i_men);
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u3_noun qi_men = u3t(i_men);
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u3_noun t_men = u3t(men);
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u3_noun geq = u3_cqfu_tack(van, pi_men, peh, mur);
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u3_noun p_geq = u3h(geq);
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u3_noun q_geq = u3t(geq);
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u3_noun mox = _tock_in(van, sut, peh, mur, t_men);
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u3_noun p_mox = u3h(mox);
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u3_noun q_mox = u3t(mox);
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u3_noun ret;
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ret = u3nc(
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( (u3_nul == p_mox)
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? u3nc(u3_nul, u3k(p_geq))
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: (u3_no == u3_cr_sing(p_geq, u3t(p_mox)))
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? u3_cm_bail(c3__exit)
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: u3k(p_mox) ),
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u3nc(u3nc(u3k(q_geq),
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u3k(qi_men)),
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u3k(q_mox)));
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u3z(mox);
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u3z(geq);
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return ret;
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}
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}
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/* functions
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*/
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u3_noun
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_cqfu_tock(
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u3_noun van,
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u3_noun sut,
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u3_noun peh,
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u3_noun mur,
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u3_noun men)
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{
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u3_noun wib = _tock_in(van, sut, peh, mur, men);
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u3_noun p_wib = u3h(wib);
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u3_noun q_wib = u3t(wib);
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if ( u3_nul == p_wib ) {
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return u3_cm_bail(c3__exit);
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} else {
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u3_noun ret = u3nc(u3k(u3t(p_wib)),
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u3k(q_wib));
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u3z(wib);
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return ret;
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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_tock(
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u3_noun cor)
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{
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u3_noun van, sut, peh, mur, men;
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if ( (u3_no == u3_cr_mean(cor, u3_cv_sam_2, &peh,
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u3_cv_sam_6, &mur,
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u3_cv_sam_7, &men,
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u3_cv_con, &van,
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0)) ||
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(u3_none == (sut = u3_cr_at(u3_cv_sam, van))) )
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{
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return u3_cm_bail(c3__fail);
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} else {
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return _cqfu_tock(van, sut, peh, mur, men);
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}
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}
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u3_noun
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u3_cqfu_tock(u3_noun van,
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u3_noun sut,
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u3_noun peh,
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u3_noun mur,
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u3_noun men)
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{
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return _cqfu_tock(van, sut, peh, mur, men);
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}
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