Re: splitted source (decl, def) gives compile errors byy use for test suite

I've had success using the method used in the calc examples:

https://github.com/boostorg/spirit/tree/develop/example/x3/calc/calc7

Have a
String_literal.hpp
String_literal_def.hpp
String_literal.cpp

On Thu., 2 Mar. 2017, 6:59 am Olaf Peter, <[email protected]> wrote:

> Hello,
>
> I run into a compiler error :
>
> test/grammar_api.cpp: In function 'const string_literal_type&
> string_literal()':
> test/grammar_api.cpp:1291:9: error: 'string_literal' is not a member of
> 'parser'
>    return parser::string_literal;
>           ^~~~~~
>
> using spirit x3 with these project organization:
>
> * include/my/grammar.hpp:
> ----8<----
> namespace parser {
>          // Parser Rule IDs
>          struct string_literal_class;
>          ...
>          // Parser Rule Types
>          typedef x3::rule<string_literal_class> string_literal_type;
> }
> ----8<----
>
> * include/my/grammar_def.hpp:
> ----8<----
> #include "my/grammar.hpp"
> namespace parser {
>          // Parser Declarations
>          string_literal_type const string_literal { "string_literal" };
>          // Parser Definition
>          auto const string_literal_def =
>          '"' > *graph > '"'
>              ;
>          // Definition
>          BOOST_SPIRIT_DEFINE(string_literal)
> }
> ----8<----
>
> * include/my/config.hpp:
> ----8<----
> namespace parser {
>          typedef std::string::const_iterator iterator_type;
>          typedef x3::unused_type context_type;
> }
> ----8<----
>
> * src/grammar.cpp:
> ----8<----
> #include <eda/vhdl93/grammar_def.hpp>
> #include <eda/vhdl93/parser_config.hpp>
> namespace parser {
>          BOOST_SPIRIT_INSTANTIATE(string_literal, iterator_type,
> context_type);
> }
> ----8<----
>
> * test/grammar_api.h:
> ----8<----
> #include "my/grammar.hpp"
> // Grammar Test Bench API Definition
> namespace parser {
>          BOOST_SPIRIT_DECLARE(string_literal_type);
> }
> parser::string_literal_type const& string_literal();
> ----8<----
>
> * test/grammar_api.cpp
> ----8<----
> // Grammar Test Bench API Definition
> #include "grammar_api.hpp"
> parser::string_literal_type const& string_literal() {
>      return parser::string_literal;
> }
> ----8<----
>
> * test/main.cpp
> ----8<----
> // using the string_literal() parser, not yet here
> ----8<----
>
>
> The idea is not to expose all parsers into the client code, but make
> them exposed to the tests; inspired by test driven development.
>
> How to organize it correct and avoid multiple instances? The grammar.hpp
> self is missing the top/entry rule, e.g. program, since I start with
> smaller production rules (bottom up design)
>
> To fix the compiler error I have to include test/grammar_api.h in
> grammar_def.hpp. I guess these increases compile time later on and
> obviously shall be avoided.
>
>
> Thanks,
>
> Olaf
>
>
>
>
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