Fields
leading_zero: void,
The number has leading zeroes.
digit_after_base: void,
Expected a digit after base prefix.
upper_case_base: usize,
The base prefix is in uppercase.
invalid_float_base: usize,
Float literal has an invalid base prefix.
repeated_underscore: usize,
Repeated ‘_’ digit separator.
invalid_underscore_after_special: usize,
‘_’ digit separator after special character (+-.)
invalid_digit: struct { i: usize, base: Base, },
Invalid digit for the specified base.
invalid_digit_exponent: usize,
Invalid digit for an exponent.
duplicate_period: void,
Float literal has multiple periods.
duplicate_exponent: usize,
Float literal has multiple exponents.
exponent_after_underscore: usize,
Exponent comes directly after ‘_’ digit separator.
special_after_underscore: usize,
Special character (+-.) comes directly after exponent.
trailing_special: usize,
Number ends in special character (+-.)
trailing_underscore: usize,
Number ends in ‘_’ digit separator.
invalid_character: usize,
Character not in [0-9a-zA-Z.+-_]
invalid_exponent_sign: usize,
[+-] not immediately after [pPeE]