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Copy pathpure2-enum.cpp2
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135 lines (109 loc) · 4.86 KB
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skat_game: @enum type = {
diamonds := 9;
hearts; // 10
spades; // 11
clubs; // 12
grand := 20;
null := 23;
}
janus: @enum type = {
past;
future;
flip: (inout this) == {
if this == past { this = future; }
else { this = past; }
}
}
file_attributes: @flag_enum<u8> type = {
cached; // 1
current; // 2
obsolete; // 4
cached_and_current := cached | current;
}
main: () = {
j := janus::past;
j.flip();
_ = j;
// x : skat_game = 9; // error, can't construct skat_game from integer
x: skat_game = skat_game::clubs;
x2 := skat_game::diamonds;
x2 = x;
x3 := skat_game::from_string("hearts");
x4 := skat_game::from_code("skat_game::hearts");
// if x == 9 { } // error, can't compare skat_game and integer
// if x == rgb::red { } // error, can't compare skat_game and rgb color
std::cout << "x.to_string() is (x.to_string())$\n";
std::cout << "x2.to_string() is (x2.to_string())$\n";
std::cout << "x3.to_string() is (x3.to_string())$\n";
std::cout << "x3.to_code() is (x3.to_code())$\n";
std::cout << "x4.to_string() is (x3.to_string())$\n";
std::cout << "with if else: ";
if x == skat_game::diamonds { // ok, can compare two skat_games
std::cout << "diamonds";
}
else if skat_game::hearts == x { // ok, in either order
std::cout << "hearts";
}
else if x is (skat_game::spades) { // ok, using is
std::cout << "spades";
}
else if skat_game::clubs is (x) { // ok, using is
std::cout << "clubs";
}
else {
std::cout << "not a suit";
}
std::cout << "\nwith inspect: " << inspect x -> std::string {
is (skat_game::diamonds) = "diamonds";
is (skat_game::hearts ) = "hearts";
is (skat_game::spades ) = "spades";
is (skat_game::clubs ) = "clubs";
is _ = "not a suit";
} << "\n\n";
// x = 9; // error, can't assign skat_game from integer
// x = rgb::red; // error, can't assign skat_game from rgb color
x = skat_game::diamonds; // ok, can assign one skat_game from another
std::cout << "file_attributes::cached.get_raw_value() is (file_attributes::cached.get_raw_value())$\n";
std::cout << "file_attributes::current.get_raw_value() is (file_attributes::current.get_raw_value())$\n";
std::cout << "file_attributes::obsolete.get_raw_value() is (file_attributes::obsolete.get_raw_value())$\n";
std::cout << "file_attributes::cached_and_current.get_raw_value() is (file_attributes::cached_and_current.get_raw_value())$\n";
f: file_attributes = file_attributes::cached_and_current;
f &= file_attributes::cached | file_attributes::obsolete;
std::cout << "f. get_raw_value() is (f. get_raw_value())$\n";
f2 := file_attributes::cached;
std::cout << "f2.get_raw_value() is (f2.get_raw_value())$\n";
std::cout << "f is " << f.to_string() << "\n";
std::cout << "f2 is " << f2.to_string() << "\n";
f2.clear( f2 );
std::cout << "f2 is " << f2.to_string() << "\n";
f2.set(file_attributes::cached);
std::cout << "f2 is " << f2.to_string() << "\n";
std::cout << "f. get_raw_value() is (f. get_raw_value())$\n";
std::cout << "f2.get_raw_value() is (f2.get_raw_value())$\n";
std::cout << "f is (f2) is (f is (f2))$\n";
std::cout << "f2 is (f ) is (f2 is (f ))$\n\n";
f.clear( f2 );
f.set( file_attributes::current | f2 );
f |= file_attributes::obsolete;
f2 |= file_attributes::current;
std::cout << "f is " << f.to_string() << "\n";
std::cout << "f2 is " << f2.to_string() << "\n";
std::cout << "f. get_raw_value() is (f. get_raw_value())$\n";
std::cout << "f2.get_raw_value() is (f2.get_raw_value())$\n";
std::cout << "f == f2 is (f == f2 )$\n";
std::cout << "f is (f2) is (f is (f2))$\n";
std::cout << "f2 is (f ) is (f2 is (f ))$\n";
std::cout << "(f & f2) == f2 is ((f & f2) == f2)$\n";
std::cout << "inspecting f: " << inspect f -> std::string {
is (file_attributes::current) = "exactly 'current'";
is (cpp2::has_flags(f2)) = "includes all f2's flags ('cached' and 'current')";
is _ = "something else";
} << "\n";
f_from_string := file_attributes::from_string("cached_and_current");
std::cout << "f_from_string is " << f_from_string.to_string() << "\n";
f_from_string = file_attributes::from_string("(current, obsolete)");
std::cout << "f_from_string is " << f_from_string.to_string() << "\n";
std::cout << "f_from_string.to_code() is " << f_from_string.to_code() << "\n";
f_from_string = file_attributes::from_code("(file_attributes::cached | file_attributes::obsolete)");
std::cout << "f_from_string is " << f_from_string.to_string() << "\n";
}