mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-06 09:34:08 +00:00
Code Activity

Add enumeration_sort method to C++ API. Add as_expr method to goal class in C++ API. Add enum_sort_example to C++ examples/c++/example.cpp

Browse source 
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2013-02-26 08:29:01 -08:00
parent 14f582eca5
commit b2810592e6
2 changed files with 66 additions and 6 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

24
examples/c++/example.cpp
View file

@ -883,6 +883,29 @@ void incremental_example3() {
std::cout << s.check(a2) << "\n";
}
void enum_sort_example() {
std::cout << "enumeration sort example\n";
context ctx;
const char * enum_names[] = { "a", "b", "c" };
func_decl_vector enum_consts(ctx);
func_decl_vector enum_testers(ctx);
sort s = ctx.enumeration_sort("enumT", 3, enum_names, enum_consts, enum_testers);
// enum_consts[0] is a func_decl of arity 0.
// we convert it to an expression using the operator()
expr a = enum_consts[0]();
expr b = enum_consts[1]();
expr x = ctx.constant("x", s);
expr test = (x==a) && (x==b);
std::cout << "1: " << test << std::endl;
tactic qe(ctx, "ctx-solver-simplify");
goal g(ctx);
g.add(test);
expr res(ctx);
apply_result result_of_elimination = qe.apply(g);
goal result_goal = result_of_elimination[0];
std::cout << "2: " << result_goal.as_expr() << std::endl;
}
int main() {
try {
demorgan(); std::cout << "\n";
@ -917,6 +940,7 @@ int main() {
incremental_example1(); std::cout << "\n";
incremental_example2(); std::cout << "\n";
incremental_example3(); std::cout << "\n";
enum_sort_example(); std::cout << "\n";
std::cout << "done\n";
}
catch (exception & ex) {

48
src/api/c++/z3++.h
View file

@ -63,6 +63,11 @@ namespace z3 {
class statistics;
class apply_result;
class fixedpoint;
template<typename T> class ast_vector_tpl;
typedef ast_vector_tpl<ast> ast_vector;
typedef ast_vector_tpl<expr> expr_vector;
typedef ast_vector_tpl<sort> sort_vector;
typedef ast_vector_tpl<func_decl> func_decl_vector;
inline void set_param(char const * param, char const * value) { Z3_global_param_set(param, value); }
inline void set_param(char const * param, bool value) { Z3_global_param_set(param, value ? "true" : "false"); }
@ -190,7 +195,13 @@ namespace z3 {
Example: Given a context \c c, <tt>c.array_sort(c.int_sort(), c.bool_sort())</tt> is an array sort from integer to Boolean.
*/
sort array_sort(sort d, sort r);
/**
\brief Return an enumeration sort: enum_names[0], ..., enum_names[n-1].
\c cs and \c ts are output parameters. The method stores in \c cs the constants corresponding to the enumerated elements,
and in \c ts the predicates for testing if terms of the enumeration sort correspond to an enumeration.
*/
sort enumeration_sort(char const * name, unsigned n, char const * const * enum_names, func_decl_vector & cs, func_decl_vector & ts);
func_decl function(symbol const & name, unsigned arity, sort const * domain, sort const & range);
func_decl function(char const * name, unsigned arity, sort const * domain, sort const & range);
func_decl function(char const * name, sort const & domain, sort const & range);
@ -414,6 +425,7 @@ namespace z3 {
bool is_const() const { return arity() == 0; }
expr operator()() const;
expr operator()(unsigned n, expr const * args) const;
expr operator()(expr const & a) const;
expr operator()(int a) const;
@ -1020,11 +1032,6 @@ namespace z3 {
friend std::ostream & operator<<(std::ostream & out, ast_vector_tpl const & v) { out << Z3_ast_vector_to_string(v.ctx(), v); return out; }
};
typedef ast_vector_tpl<ast> ast_vector;
typedef ast_vector_tpl<expr> expr_vector;
typedef ast_vector_tpl<sort> sort_vector;
typedef ast_vector_tpl<func_decl> func_decl_vector;
class func_entry : public object {
Z3_func_entry m_entry;
void init(Z3_func_entry e) {
@ -1261,6 +1268,19 @@ namespace z3 {
unsigned num_exprs() const { return Z3_goal_num_exprs(ctx(), m_goal); }
bool is_decided_sat() const { return Z3_goal_is_decided_sat(ctx(), m_goal) != 0; }
bool is_decided_unsat() const { return Z3_goal_is_decided_unsat(ctx(), m_goal) != 0; }
expr as_expr() const {
unsigned n = size();
if (n == 0)
return ctx().bool_val(false);
else if (n == 1)
return operator[](0);
else {
array<Z3_ast> args(n);
for (unsigned i = 0; i < n; i++)
args[i] = operator[](i);
return expr(ctx(), Z3_mk_and(ctx(), n, args.ptr()));
}
}
friend std::ostream & operator<<(std::ostream & out, goal const & g) { out << Z3_goal_to_string(g.ctx(), g); return out; }
};
@ -1437,6 +1457,17 @@ namespace z3 {
inline sort context::real_sort() { Z3_sort s = Z3_mk_real_sort(m_ctx); check_error(); return sort(*this, s); }
inline sort context::bv_sort(unsigned sz) { Z3_sort s = Z3_mk_bv_sort(m_ctx, sz); check_error(); return sort(*this, s); }
inline sort context::array_sort(sort d, sort r) { Z3_sort s = Z3_mk_array_sort(m_ctx, d, r); check_error(); return sort(*this, s); }
inline sort context::enumeration_sort(char const * name, unsigned n, char const * const * enum_names, func_decl_vector & cs, func_decl_vector & ts) {
array<Z3_symbol> _enum_names(n);
for (unsigned i = 0; i < n; i++) { _enum_names[i] = Z3_mk_string_symbol(*this, enum_names[i]); }
array<Z3_func_decl> _cs(n);
array<Z3_func_decl> _ts(n);
Z3_symbol _name = Z3_mk_string_symbol(*this, name);
sort s = to_sort(*this, Z3_mk_enumeration_sort(*this, _name, n, _enum_names.ptr(), _cs.ptr(), _ts.ptr()));
check_error();
for (unsigned i = 0; i < n; i++) { cs.push_back(func_decl(*this, _cs[i])); ts.push_back(func_decl(*this, _ts[i])); }
return s;
}
inline func_decl context::function(symbol const & name, unsigned arity, sort const * domain, sort const & range) {
array<Z3_sort> args(arity);
@ -1538,6 +1569,11 @@ namespace z3 {
return expr(ctx(), r);
}
inline expr func_decl::operator()() const {
Z3_ast r = Z3_mk_app(ctx(), *this, 0, 0);
ctx().check_error();
return expr(ctx(), r);
}
inline expr func_decl::operator()(expr const & a) const {
check_context(*this, a);
Z3_ast args[1] = { a };