urbit/j/d/by_uni.c

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/* j/4/by_uni.c
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**
*/
#include "all.h"
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/* functions
*/
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u3_noun
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u3qdb_uni(
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u3_noun a,
u3_noun b)
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{
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if ( u3_nul == a ) {
return u3k(b);
}
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else if ( u3_nul == b ) {
return u3k(a);
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}
else {
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u3_noun l_a, n_a, r_a, lr_a, p_n_a, q_n_a;
u3_noun l_b, n_b, r_b, lr_b, p_n_b, q_n_b;
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if ( (c3n == u3r_cell(a, &n_a, &lr_a)) ) {
return u3m_bail(c3__exit);
}
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else if ( (c3n == u3r_cell(b, &n_b, &lr_b)) ) {
return u3m_bail(c3__exit);
}
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else if ( (c3n == u3r_cell(n_a, &p_n_a, &q_n_a)) ) {
return u3m_bail(c3__exit);
}
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else if ( (c3n == u3r_cell(n_b, &p_n_b, &q_n_b)) ) {
return u3m_bail(c3__exit);
}
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else if ( c3n == u3r_cell(lr_a, &l_a, &r_a) ) {
return u3m_bail(c3__exit);
}
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else if ( c3n == u3r_cell(lr_b, &l_b, &r_b) ) {
return u3m_bail(c3__exit);
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}
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else if ( c3y == u3qc_vor(p_n_a, p_n_b) ) {
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if ( c3y == u3r_sing(p_n_a, p_n_b) ) {
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return u3nt(u3k(n_b),
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u3qdb_uni(
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u3k(l_a), u3k(l_b)),
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u3qdb_uni(
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u3k(r_a), u3k(r_b)));
}
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else if ( c3y == u3qc_hor(p_n_b, p_n_a) ) {
return u3qdb_uni(
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u3nt(
u3k(n_a),
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u3qdb_uni(
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u3k(l_a),
u3nt(
u3k(n_b),
u3k(l_b),
u3k(u3_nul))),
u3k(r_a)),
u3k(r_b));
}
else {
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return u3qdb_uni(
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u3nt(
u3k(n_a),
u3k(l_a),
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u3qdb_uni(
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u3k(r_a),
u3nt(
u3k(n_b),
u3k(u3_nul),
u3k(r_b)))),
u3k(l_b));
}
}
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else if ( c3y == u3r_sing(p_n_b, p_n_a) ) {
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return u3nt(
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u3k(n_b),
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u3qdb_uni(u3k(r_b), u3k(r_a)),
u3qdb_uni(u3k(l_b), u3k(l_a)));
}
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else if ( c3y == u3qc_hor(p_n_a, p_n_b) ) {
return u3qdb_uni(
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u3k(r_a),
u3nt(
u3k(n_b),
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u3qdb_uni(
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u3nt(
u3k(n_a),
u3k(l_a),
u3k(u3_nul)),
u3k(l_b)),
u3k(r_b)));
}
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else {
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return u3qdb_uni(
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u3k(l_a),
u3nt(
u3k(n_b),
u3k(l_b),
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u3qdb_uni(
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u3k(r_b),
u3nt(
u3k(n_a),
u3k(u3_nul),
u3k(r_a)))));
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}
}
}
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u3_noun
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u3wdb_uni(
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u3_noun cor)
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{
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u3_noun a, b;
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if ( c3n == u3r_mean(cor, u3x_sam, &b, u3x_con_sam, &a, 0) ) {
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return u3m_bail(c3__exit);
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} else {
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return u3qdb_uni(a, b);
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}
}