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Merge remote-tracking branch 'upstream/master'

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Lev Nachmanson 2017-05-16 12:04:20 -07:00
commit e78a799b53
1 changed files with 9 additions and 17 deletions
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26
src/ast/rewriter/seq_rewriter.cpp
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@ -440,24 +440,16 @@ br_status seq_rewriter::mk_app_core(func_decl * f, unsigned num_args, expr * con
* (seq.unit (_ BitVector 8)) ==> String constant
*/
br_status seq_rewriter::mk_seq_unit(expr* e, expr_ref& result) {
sort * s = m().get_sort(e);
bv_util bvu(m());
if (is_sort_of(s, bvu.get_family_id(), BV_SORT)) {
// specifically we want (_ BitVector 8)
rational n_val;
unsigned int n_size;
if (bvu.is_numeral(e, n_val, n_size)) {
if (n_size == 8) {
// convert to string constant
char ch = (char)n_val.get_int32();
TRACE("seq", tout << "rewrite seq.unit of 8-bit value " << n_val.to_string() << " to string constant \"" << ch << "\"" << std::endl;);
char s_tmp[2] = {ch, '\0'};
symbol s(s_tmp);
result = m_util.str.mk_string(s);
return BR_DONE;
}
}
rational n_val;
unsigned int n_size;
// specifically we want (_ BitVector 8)
if (bvu.is_bv(e) && bvu.is_numeral(e, n_val, n_size) && n_size == 8) {
// convert to string constant
zstring str(n_val.get_unsigned());
TRACE("seq", tout << "rewrite seq.unit of 8-bit value " << n_val.to_string() << " to string constant \"" << str<< "\"" << std::endl;);
result = m_util.str.mk_string(str);
return BR_DONE;
}
return BR_FAILED;