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https://github.com/ilyakooo0/urbit.git
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84 lines
1.7 KiB
C
84 lines
1.7 KiB
C
/* j/6/ut_conk.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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#include "../pit.h"
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/* logic
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*/
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u2_bean
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_cqfu_conk(
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u2_noun van,
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u2_noun sut,
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u2_noun got)
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{
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if ( u2_yes == u2ud(got) ) {
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return u2_cqf_face(got, sut);
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}
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else switch ( u2h(got) ) {
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default: return u2_cm_bail(c3__fail);
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case 0: {
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return u2k(sut);
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}
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case 1: {
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return u2_cqf_face
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(u2h(u2t(got)),
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_cqfu_conk(van, sut, u2t(u2t(got))));
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}
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case 2: {
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u2_bean vet = u2_cr_at(u2_cqfu_van_vet, van);
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u2_noun hed, tal, ret;
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if ( u2_yes == vet ) {
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u2_noun cel = u2nt(c3__cell, c3__noun, c3__noun);
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if ( u2_no == u2_cqfu_nest(van, cel, u2_yes, sut) ) {
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return u2_cm_bail(c3__fail);
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}
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u2z(cel);
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}
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hed = u2_cqfu_peek(van, sut, c3__both, 2);
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tal = u2_cqfu_peek(van, sut, c3__both, 3);
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ret = u2_cqf_cell
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(
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_cqfu_conk(van, hed, u2h(u2t(got))),
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_cqfu_conk(van, tal, u2t(u2t(got))));
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u2z(hed);
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u2z(tal);
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return ret;
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}
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}
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}
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/* boilerplate
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*/
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u2_noun
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u2_cwfu_conk(u2_noun cor)
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{
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u2_noun sut, got, van;
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if ( (u2_no == u2_cr_mean(cor, u2_cv_sam, &got,
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u2_cv_con, &van,
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0)) ||
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(u2_none == (sut = u2_cr_at(u2_cv_sam, van))) )
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{
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return u2_cm_bail(c3__fail);
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} else {
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return _cqfu_conk(van, sut, got);
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}
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}
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u2_noun
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u2_cqfu_conk(u2_noun van,
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u2_noun sut,
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u2_noun got)
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{
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return _cqfu_conk(van, sut, got);
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}
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