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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2018-02-02 20:51:41 -08:00
parent a6ac6958a6
commit e95840b640
5 changed files with 90 additions and 34 deletions
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78
src/opt/opt_parse.cpp
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@ -344,23 +344,60 @@ public:
};
class lp_parse {
opt::context& opt;
lp_tokenizer& tok;
typedef svector<std::pair<int, symbol> > lin_term;
struct objective {
bool m_is_max;
symbol m_name;
lin_term m_expr;
};
enum rel_op {
le, ge, eq
};
struct indicator {
symbol m_var;
bool m_true;
};
struct constraint {
optional<indicator> m_ind;
lin_term m_expr;
rel_op m_rel;
int m_bound;
};
struct bound {
symbol m_var;
option<rational> m_lo, m_hi;
};
opt::context& opt;
lp_tokenizer& tok;
objective m_objective;
vector<constraint> m_constraints;
vector<bound> m_bounds;
hashtable<symbol, symbol_hash_proc, symbol_eq_proc> m_binary;
public:
lp_parse(opt::context& opt, lp_stream_buffer& in): opt(opt), tok(is) {}
lp_parse(opt::context& opt, lp_stream_buffer& in):
opt(opt), tok(is) {}
void parse() {
objective();
subject_to();
bounds();
general();
binary();
parse_objective();
parse_subject_to();
parse_bounds();
parse_general();
parse_binary();
post_process();
}
void objective() {
void parse_objective() {
m_objective.m_is_max = minmax();
m_objective.m_name = try_name();
m_objective.m_expr = expr();
parse_expr(m_objective.m_expr);
}
bool minmax() {
@ -376,16 +413,31 @@ public:
return false;
}
bool try_accept(char const* token) {
return false;
}
bool indicator(symbol& var, bool& val) {
if (!try_variable(var)) return false;
check(in.parse_token("="));
bool parse_indicator(symbol& var, bool& val) {
if (!peek("=", 1)) return false;
if (!peek(":", 3)) return false;
if (!peek("1", 2) && !peek("0", 2)) return false;
val = peek("1",2);
parse_variable(var);
accept("=");
accept();
accept(":");
return true;
}
void parse_bounds() {
if (!try_accept("bounds")) return;
}
void parse_indicator() {
}
def indicator(self):
v = self.variable()