message_iteration.cc

This example shows how to iterate through a message. The same iteration model used in this example can be also be applied to Filter and Predicate objects.

#include <iostream>
#include <siena/attributes.h>

using namespace std;
using namespace siena;

void print_message(const Message & m) {

    Message::Iterator * i = m.first();
    String s;

    if (i != NULL) {
        do {
            cout << "attribute: " << i->name().to_string() << endl;
            switch (i->type()) {
            case STRING: cout << "string = " << i->string_value().to_string(s); break;
            case INT: cout << "int = " << i->int_value(); break;
            case BOOL: cout << "bool = " << i->bool_value(); break;
            case DOUBLE: cout << "double = " << i->double_value(); break;
            case ANYTYPE: 
                cout << "(generic value)" << endl; 
                cout << "Generic values are used in Constraints, not Messages." << endl; 
                break;
            }
            cout << endl;
        } while (i->next());
        delete(i);
    } else {
        cout << "empty message!" << endl;
    }
}