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prep for max/min diff

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This commit is contained in:
Nikolaj Bjorner 2022-05-04 02:08:11 -07:00
parent 87d2a3b4e5
commit c29cfa81ae
5 changed files with 93 additions and 2 deletions
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20
src/ast/array_decl_plugin.cpp
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@ -527,6 +527,19 @@ func_decl * array_decl_plugin::mk_func_decl(decl_kind k, unsigned num_parameters
return nullptr;
}
return mk_array_ext(arity, domain, parameters[0].get_int());
case OP_ARRAY_MAXDIFF:
case OP_ARRAY_MINDIFF: {
if (num_parameters != 0)
m_manager->raise_exception("min/maxdiff don't take any parameters");
if (arity != 2 || domain[0] != domain[1] || !is_array_sort(domain[0]) || 1 != get_array_arity(domain[0]))
m_manager->raise_exception("min/maxdiff don't take two arrays of same sort and with integer index");
sort* idx = get_array_domain(domain[0], 0);
arith_util arith(*m_manager);
if (!arith.is_int(domain[0]))
m_manager->raise_exception("min/maxdiff take integer index domain");
return m_manager->mk_func_decl(k == OP_ARRAY_MAXDIFF ? symbol("maxdiff") : symbol("mindiff"),
arity, domain, arith.mk_int(), func_decl_info(m_family_id, k));
}
case OP_ARRAY_DEFAULT:
return mk_default(arity, domain);
case OP_SET_UNION:
@ -587,6 +600,13 @@ void array_decl_plugin::get_op_names(svector<builtin_name>& op_names, symbol con
op_names.push_back(builtin_name("subset",OP_SET_SUBSET));
op_names.push_back(builtin_name("as-array", OP_AS_ARRAY));
op_names.push_back(builtin_name("array-ext", OP_ARRAY_EXT));
#if 0
// not exposed
op_names.push_back(builtin_name("mindiff", OP_ARRAY_MINDIFF));
op_names.push_back(builtin_name("maxdiff", OP_ARRAY_MAXDIFF));
#endif
#if 0
op_names.push_back(builtin_name("set-has-size", OP_SET_HAS_SIZE));
op_names.push_back(builtin_name("card", OP_SET_CARD));