from_param

Decodes a T from one piece of text: an integer, float, bool, string or enum. from_param(int, "42") is 42; from_param(Color, "red") the member red; a string is taken as it is.

number, error := from_param(int, "42");
assert(error.kind == .NONE && number == 42);

_, error = from_param(int, "forty-two");
assert(error.kind != .NONE);
free_json(*error);

from_param :: (
    $T: Type,
    text: string,
    options := Json_Options.{}
) -> (T, Json_Error)