addUserInputFlag

pub fn addUserInputFlag(b: *Build, name_raw: []const u8) error

File

Code

pub fn addUserInputFlag(b: *Build, name_raw: []const u8) error{OutOfMemory}!bool {
    const graph = b.graph;
    const name = graph.dupeString(name_raw);
    const gop = try b.user_input_options.getOrPut(name);
    if (!gop.found_existing) {
        gop.value_ptr.* = .{
            .name = name,
            .value = .{ .flag = {} },
            .used = false,
        };
        return false;
    }

    // option already exists
    switch (gop.value_ptr.value) {
        .scalar => |s| {
            log.err("Flag '-D{s}' conflicts with option '-D{s}={s}'.", .{ name, name, s });
            return true;
        },
        .list, .map, .lazy_path_list => {
            log.err("Flag '-D{s}' conflicts with multiple options of the same name.", .{name});
            return true;
        },
        .lazy_path => |lp| {
            log.err("Flag '-D{s}' conflicts with option '-D{s}={f}'.", .{ name, name, lp });
            return true;
        },

        .flag => {},
    }
    return false;
}