Re: [boost] [wave] add_macro_definition("TEST=") behaves different than #define TEST

Subject: Re: [boost] [wave] add_macro_definition("TEST=") behaves different than #define TEST
From: Hartmut Kaiser (hartmut.kaiser_at_[hidden])
Date: 2012-11-09 20:22:06

> > Test1 posted below produces:
> >
> > INT
> > SPACE
> > EOF
> > SPACE
> > IDENTIFIER
> > SEMICOLON
> > NEWLINE
> > EOF
> >
> > While Test2 produces:
> >
> > INT
> > SPACE
> > IDENTIFIER
> > SEMICOLON
> > NEWLINE
> > EOF
> >
> > The EOF in the third line of Test1 output is produced by the TEST
> > macro expansion.
> > If this expected behaviour? I found this surprising.
> > (MSVC10, Boost 1.51)
> 
> Looks like a bug to me. Would you mind creating a ticket for this, please?

That's fixed in Boost SVN trunk now

Regards Hartmut
---------------
http://boost-spirit.com
http://stellar.cct.lsu.edu

> > ----
> > Code:
> >
> > typedef cpplexer::lex_token<> token_type; typedef context<
> >     string::iterator,
> >     cpplexer::lex_iterator<token_type>
> >     > lexer_context_type;
> >
> > void Test1()
> > {
> >   string instring("int TEST x;\n");
> >   lexer_context_type ctx(instring.begin(), instring.end(), "");
> >   ctx.set_language(language_support(support_c99));
> >   ctx.add_macro_definition("TEST=");
> >
> >
> > for (lexer_context_type::iterator_type it = ctx.begin(); it !=
> > ctx.end();
> > ++it)
> >     cout << get_token_name(token_id(*it)) << endl; }
> >
> > void Test2()
> > {
> >   string instring("#define TEST\nint TEST x;\n");
> >   lexer_context_type ctx(instring.begin(), instring.end(), "");
> >   ctx.set_language(language_support(support_c99));
> >
> >   for (lexer_context_type::iterator_type it = ctx.begin(); it !=
> > ctx.end(); ++it)
> >     cout << get_token_name(token_id(*it)) << endl; }
> >
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