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96 lines
2.4 KiB
C
96 lines
2.4 KiB
C
/* j/3/can.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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/* functions
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*/
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u2_noun // transfer
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j2_mbc(Pt3, can)(u2_wire wir_r,
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u2_atom a, // retain
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u2_noun b) // retain
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{
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if ( !u2_fly_is_cat(a) || (a >= 32) ) {
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return u2_bl_bail(wir_r, c3__fail);
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}
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else {
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c3_g a_g = a;
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c3_w tot_w = 0;
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u2_ray sal_r;
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/* Measure and validate the slab required.
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*/
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{
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u2_noun cab = b;
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while ( 1 ) {
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u2_noun i_cab, pi_cab, qi_cab;
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if ( _0 == cab ) {
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break;
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}
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if ( (u2_no == u2_dust(cab)) ||
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(u2_no == u2_dust(i_cab = u2_h(cab))) ||
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!(u2_fly_is_cat(pi_cab = u2_h(i_cab))) ||
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u2_no == u2_stud(qi_cab = u2_t(i_cab)) )
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{
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return u2_bl_bail(wir_r, c3__fail);
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}
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else if ( (tot_w + pi_cab) < tot_w ) {
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return u2_bl_bail(wir_r, c3__fail);
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}
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tot_w += pi_cab;
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cab = u2_t(cab);
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}
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if ( 0 == tot_w ) {
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return _0;
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}
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if ( 0 == (sal_r = u2_rl_slaq(wir_r, a_g, tot_w)) ) {
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return u2_bl_bail(wir_r, c3__fail);
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}
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}
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/* Chop the list atoms in.
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*/
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{
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u2_noun cab = b;
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c3_w pos_w = 0;
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while ( _0 != cab ) {
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u2_noun i_cab = u2_h(cab);
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u2_atom pi_cab = u2_h(i_cab);
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u2_atom qi_cab = u2_t(i_cab);
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u2_chop(a_g, 0, pi_cab, pos_w, sal_r, qi_cab);
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pos_w += pi_cab;
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cab = u2_t(cab);
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}
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}
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return u2_rl_malt(wir_r, sal_r);
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}
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}
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u2_weak // transfer
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j2_mb(Pt3, can)(u2_wire wir_r,
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u2_noun cor) // retain
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{
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u2_noun a, b;
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if ( (u2_no == u2_mean(cor, u2_cv_sam_2, &a, u2_cv_sam_3, &b, 0)) ||
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(u2_no == u2_stud(a)) )
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{
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return u2_bl_bail(wir_r, c3__fail);
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} else {
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return j2_mbc(Pt3, can)(wir_r, a, b);
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}
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}
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/* structures
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*/
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u2_ho_jet
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j2_mbj(Pt3, can)[] = {
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{ ".2", c3__hevy, j2_mb(Pt3, can), Tier3, u2_none, u2_none },
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{ }
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};
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