Injected Lexer class members of type reference cannot be initialized

Genivia / RE-flex

A high-performance C++ regex library and lexical analyzer generator with Unicode support. Extends Flex++ with Unicode support, indent/dedent anchors, lazy quantifiers, functions for lex and syntax error reporting and more. Seamlessly integrates with Bison and other parsers.

BSD 3-Clause "New" or "Revised" License

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The %init{ ... } code block cannot be used to initialize injected Lexer class members of type reference, which must be initialized in the constructor member initializer list.

Proposal: add %option ctorinit="initializer, initializer, ..." to add injected member initializers to the constructor's member initializer list, mirroring the existing option %option ctorarg="argument, argument, ..." for adding argument declarations to the constructor.

Example:

%class{ int& refint; bool& refbool; } %option ctorarg="int& ri, bool& rb" %option ctorinit="refint(ri), refbool(rb)"

Genivia / RE-flex

Injected Lexer class members of type reference cannot be initialized #123