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#5429

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-07-30 21:35:09 -07:00
parent 1488bf81ae
commit 53ab931626
6 changed files with 137 additions and 8 deletions
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27
src/sat/dimacs.cpp
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@ -165,6 +165,10 @@ namespace dimacs {
return out << "f " << r.m_node_id << " " << r.m_name << " " << r.m_args << "0\n";
case drat_record::tag_t::is_bool_def:
return out << "b " << r.m_node_id << " " << r.m_args << "0\n";
case drat_record::tag_t::is_var:
return out << "v " << r.m_node_id << " " << r.m_name << " " << r.m_args << "0\n";
case drat_record::tag_t::is_quantifier:
return out << "q " << r.m_node_id << " " << r.m_name << " " << r.m_args << "0\n";
}
return out;
}
@ -256,6 +260,23 @@ namespace dimacs {
m_record.m_args.push_back(n);
}
};
auto parse_var = [&]() {
++in;
skip_whitespace(in);
n = parse_int(in, err);
skip_whitespace(in);
m_record.m_name = parse_sexpr();
m_record.m_tag = drat_record::tag_t::is_var;
m_record.m_node_id = n;
m_record.m_args.reset();
n = parse_int(in, err);
if (n < 0)
throw lex_error();
m_record.m_args.push_back(n);
n = parse_int(in, err);
if (n != 0)
throw lex_error();
};
try {
loop:
skip_whitespace(in);
@ -290,6 +311,12 @@ namespace dimacs {
// parse expression definition
parse_ast(drat_record::tag_t::is_node);
break;
case 'v':
parse_var();
break;
case 'q':
parse_ast(drat_record::tag_t::is_quantifier);
break;
case 'f':
// parse function declaration
parse_ast(drat_record::tag_t::is_decl);