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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

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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
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24
examples/c++/example.cpp
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@ -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) {