regen/regcharclass.pl: add 'bool' support#24356
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Add a new 'bool' return type for generated macros. Unlike the default 'len' return type which returns the byte length of the match, 'bool' macros return a simple true/false result, which can produce simpler generated code when the match length is not needed. The 'bool' type can be requested by appending '-bool' to a type specifier in the __DATA__ section (e.g. 'UTF8-bool'), or by passing ret_type => 'bool' to make_macro() directly. The 'is_' prefix is retained for bool macros, making it more accurate than for 'len' macros which also use it.
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Add a new
'bool'return type for generated macros. Unlike the default'len'return type which returns the byte length of the match,'bool'macros return a simple true/false result, which can produce simpler generated code when the match length is not needed.The 'bool' type can be requested by appending
'-bool'to a type specifier in the DATA section (e.g.'UTF8-bool').The
'is_'prefix is retained for bool macros, making it more accurate than for'len'macros which also use it.