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jeremy-rifkin/c++numbers.re

Created August 27, 2021 03:33
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regular expressions for c++ numeric literals
Raw
c++numbers.re
integer: (?:(?:0[Xx][0-9a-fA-F](?:'?[0-9a-fA-F])*)|(?:0[Bb][01](?:'?[01])*)|(?:0(?:'?[0-7])*)|(?:[1-9](?:'?\d)*))(?:[Uu](?:LL?|ll?|Z|z)?|(?:LL?|ll?|Z|z)[Uu]?)?
floating-point: (?:((?:\d(?:'?\d)*)?\.\d(?:'?\d)*|\d(?:'?\d)*\.)(?:[Ee][\+-]?\d(?:'?\d)*)?[FfLl]?|\d(?:'?\d)*[Ee][\+-]?\d(?:'?\d)*[FfLl]?|0[Xx](?:(?:[0-9a-fA-F](?:'?[0-9a-fA-F])*)?\.[0-9a-fA-F](?:'?[0-9a-fA-F])*|[0-9a-fA-F](?:'?[0-9a-fA-F])*\.)[Pp][\+-]?\d(?:'?\d)*[FfLl]?|0[Xx][0-9a-fA-F](?:'?[0-9a-fA-F])*[Pp][\+-]?\d(?:'?\d)*[FfLl]?)
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