mirror of
https://github.com/Z3Prover/z3
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include special functionality in parsers for solvers and opt for additional file formats
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner
parent
187998ae4d
commit
5ee30a3cd9
12 changed files with 324 additions and 303 deletions
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@ -35,6 +35,7 @@ Revision History:
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#include "util/error_codes.h"
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#include "util/gparams.h"
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#include "util/env_params.h"
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#include "util/file_path.h"
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#include "shell/lp_frontend.h"
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typedef enum { IN_UNSPECIFIED, IN_SMTLIB_2, IN_DATALOG, IN_DIMACS, IN_WCNF, IN_OPB, IN_Z3_LOG, IN_MPS } input_kind;
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@ -286,19 +287,6 @@ void parse_cmd_line_args(int argc, char ** argv) {
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}
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}
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char const * get_extension(char const * file_name) {
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if (file_name == 0)
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return 0;
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char const * last_dot = 0;
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for (;;) {
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char const * tmp = strchr(file_name, '.');
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if (tmp == 0) {
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return last_dot;
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}
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last_dot = tmp + 1;
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file_name = last_dot;
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}
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}
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int STD_CALL main(int argc, char ** argv) {
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try{
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@ -13,6 +13,7 @@ Copyright (c) 2015 Microsoft Corporation
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#include "util/gparams.h"
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#include "util/timeout.h"
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#include "ast/reg_decl_plugins.h"
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#include "opt/opt_parse.h"
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extern bool g_display_statistics;
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static bool g_first_interrupt = true;
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@ -20,262 +21,6 @@ static opt::context* g_opt = 0;
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static double g_start_time = 0;
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static unsigned_vector g_handles;
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class opt_stream_buffer {
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std::istream & m_stream;
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int m_val;
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unsigned m_line;
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public:
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opt_stream_buffer(std::istream & s):
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m_stream(s),
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m_line(0) {
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m_val = m_stream.get();
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}
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int operator *() const { return m_val;}
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void operator ++() { m_val = m_stream.get(); }
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int ch() const { return m_val; }
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void next() { m_val = m_stream.get(); }
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bool eof() const { return ch() == EOF; }
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unsigned line() const { return m_line; }
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void skip_whitespace() {
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while ((ch() >= 9 && ch() <= 13) || ch() == 32) {
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if (ch() == 10) ++m_line;
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next();
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}
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}
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void skip_space() {
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while (ch() != 10 && ((ch() >= 9 && ch() <= 13) || ch() == 32)) {
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next();
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}
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}
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void skip_line() {
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while(true) {
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if (eof()) {
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return;
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}
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if (ch() == '\n') {
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++m_line;
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next();
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return;
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}
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next();
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}
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}
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bool parse_token(char const* token) {
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skip_whitespace();
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char const* t = token;
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while (ch() == *t) {
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next();
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++t;
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}
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return 0 == *t;
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}
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int parse_int() {
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int val = 0;
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bool neg = false;
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skip_whitespace();
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if (ch() == '-') {
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neg = true;
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next();
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}
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else if (ch() == '+') {
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next();
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}
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if (ch() < '0' || ch() > '9') {
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std::cerr << "(error line " << line() << " \"unexpected char: " << ((char)ch()) << "\" )\n";
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exit(3);
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}
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while (ch() >= '0' && ch() <= '9') {
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val = val*10 + (ch() - '0');
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next();
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}
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return neg ? -val : val;
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}
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unsigned parse_unsigned() {
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skip_space();
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if (ch() == '\n') {
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return UINT_MAX;
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}
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unsigned val = 0;
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while (ch() >= '0' && ch() <= '9') {
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val = val*10 + (ch() - '0');
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next();
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}
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return val;
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}
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};
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class wcnf {
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opt::context& opt;
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ast_manager& m;
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opt_stream_buffer& in;
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app_ref read_clause(unsigned& weight) {
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int parsed_lit;
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int var;
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weight = in.parse_unsigned();
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app_ref result(m), p(m);
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expr_ref_vector ors(m);
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while (true) {
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parsed_lit = in.parse_int();
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if (parsed_lit == 0)
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break;
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var = abs(parsed_lit);
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p = m.mk_const(symbol(var), m.mk_bool_sort());
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if (parsed_lit < 0) p = m.mk_not(p);
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ors.push_back(p);
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}
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result = to_app(mk_or(m, ors.size(), ors.c_ptr()));
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return result;
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}
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void parse_spec(unsigned& num_vars, unsigned& num_clauses, unsigned& max_weight) {
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in.parse_token("wcnf");
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num_vars = in.parse_unsigned();
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num_clauses = in.parse_unsigned();
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max_weight = in.parse_unsigned();
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}
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public:
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wcnf(opt::context& opt, opt_stream_buffer& in): opt(opt), m(opt.get_manager()), in(in) {
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opt.set_clausal(true);
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}
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void parse() {
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unsigned num_vars = 0, num_clauses = 0, max_weight = 0;
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while (true) {
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in.skip_whitespace();
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if (in.eof()) {
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break;
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}
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else if (*in == 'c') {
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in.skip_line();
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}
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else if (*in == 'p') {
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++in;
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parse_spec(num_vars, num_clauses, max_weight);
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}
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else {
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unsigned weight = 0;
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app_ref cls = read_clause(weight);
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if (weight >= max_weight) {
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opt.add_hard_constraint(cls);
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}
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else {
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unsigned id = opt.add_soft_constraint(cls, rational(weight), symbol::null);
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if (g_handles.empty()) {
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g_handles.push_back(id);
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}
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}
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}
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}
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}
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};
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class opb {
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opt::context& opt;
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ast_manager& m;
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opt_stream_buffer& in;
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arith_util arith;
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app_ref parse_id() {
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bool negated = in.parse_token("~");
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if (!in.parse_token("x")) {
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std::cerr << "(error line " << in.line() << " \"unexpected char: " << ((char)in.ch()) << "\")\n";
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exit(3);
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}
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app_ref p(m);
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int id = in.parse_int();
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p = m.mk_const(symbol(id), m.mk_bool_sort());
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if (negated) p = m.mk_not(p);
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in.skip_whitespace();
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return p;
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}
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app_ref parse_ids() {
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app_ref result = parse_id();
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while (*in == '~' || *in == 'x') {
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result = m.mk_and(result, parse_id());
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}
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return result;
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}
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rational parse_coeff_r() {
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in.skip_whitespace();
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svector<char> num;
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bool pos = true;
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if (*in == '-') pos = false, ++in;
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if (*in == '+') ++in;
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if (!pos) num.push_back('-');
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in.skip_whitespace();
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while ('0' <= *in && *in <='9') num.push_back(*in), ++in;
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num.push_back(0);
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return rational(num.c_ptr());
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}
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app_ref parse_coeff() {
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return app_ref(arith.mk_numeral(parse_coeff_r(), true), m);
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}
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app_ref parse_term() {
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app_ref c = parse_coeff();
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app_ref e = parse_ids();
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return app_ref(m.mk_ite(e, c, arith.mk_numeral(rational(0), true)), m);
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}
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void parse_objective() {
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app_ref t = parse_term();
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while (!in.parse_token(";") && !in.eof()) {
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t = arith.mk_add(t, parse_term());
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}
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g_handles.push_back(opt.add_objective(t, false));
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}
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void parse_constraint() {
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app_ref t = parse_term();
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while (!in.eof()) {
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if (in.parse_token(">=")) {
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t = arith.mk_ge(t, parse_coeff());
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in.parse_token(";");
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break;
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}
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if (in.parse_token("=")) {
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t = m.mk_eq(t, parse_coeff());
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in.parse_token(";");
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break;
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}
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t = arith.mk_add(t, parse_term());
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}
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opt.add_hard_constraint(t);
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}
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public:
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opb(opt::context& opt, opt_stream_buffer& in):
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opt(opt), m(opt.get_manager()),
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in(in), arith(m) {}
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void parse() {
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while (true) {
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in.skip_whitespace();
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if (in.eof()) {
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break;
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}
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else if (*in == '*') {
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in.skip_line();
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}
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else if (in.parse_token("min:")) {
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parse_objective();
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}
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else {
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parse_constraint();
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}
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}
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}
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};
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static void display_results() {
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@ -335,14 +80,11 @@ static unsigned parse_opt(std::istream& in, bool is_wcnf) {
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g_opt = &opt;
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params_ref p = gparams::get_module("opt");
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opt.updt_params(p);
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opt_stream_buffer _in(in);
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if (is_wcnf) {
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wcnf wcnf(opt, _in);
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wcnf.parse();
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parse_wcnf(opt, in, g_handles);
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}
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else {
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opb opb(opt, _in);
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opb.parse();
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parse_opb(opt, in, g_handles);
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}
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try {
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lbool r = opt.optimize();
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