Function containerLayout [src]

Prototype

pub fn containerLayout(comptime T: type) Type.ContainerLayout

Parameters

T: type

Example

 test containerLayout {
    const S1 = struct {};
    const S2 = packed struct {};
    const S3 = extern struct {};
    const U1 = union {
        a: u8,
    };
    const U2 = packed union {
        a: u8,
    };
    const U3 = extern union {
        a: u8,
    };

    try testing.expect(containerLayout(S1) == .auto);
    try testing.expect(containerLayout(S2) == .@"packed");
    try testing.expect(containerLayout(S3) == .@"extern");
    try testing.expect(containerLayout(U1) == .auto);
    try testing.expect(containerLayout(U2) == .@"packed");
    try testing.expect(containerLayout(U3) == .@"extern");
}

Source

  pub fn containerLayout(comptime T: type) Type.ContainerLayout {
    return switch (@typeInfo(T)) {
        .@"struct" => |info| info.layout,
        .@"union" => |info| info.layout,
        else => @compileError("expected struct or union type, found '" ++ @typeName(T) ++ "'"),
    };
}  