cppljevans

// Copyright (C) 2024 T. Zachary Laine
//
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#ifndef BOOST_PARSER_PARSER_HPP
#define BOOST_PARSER_PARSER_HPP

#include <boost/parser/parser_fwd.hpp>
#include <boost/parser/concepts.hpp>

cppljevans

//Purpose:
//  Simplify rule, rule_definition, parse_rule, BOOST_SPIRIT_DEFINE.
//References:
//  [inline]
//    https://isocpp.org/wiki/faq/inline-functions#where-to-put-inline-keyword
//    https://stackoverflow.com/questions/3992980/c-inline-member-function-in-cpp-file
//===========================================================================
#include "toy_rule_parse_rule.hpp"
///////////////////////////////////////////////////////////////////////////////
// test code

cppljevans

//OriginalCode:
//  http://coliru.stacked-crooked.com/a/d149f05af81bf0cf
//WhichWasAnswerTo:
//  https://stackoverflow.com/questions/45899090/recursive-rule-in-spirit-x3/45900983
//DownloadedOn:
//  2020-03-06.0512CST
//Modifications:
//  WHAT:
//    * added macro, USE_TOP_LEVEL_SKIPPER
//    * depending on defined(USE_TOP_LEVEL_SKIPPER)

cppljevans

//Following code modifies:
//  https://gist.github.com/cppljevans/0fede2c9c2e57f25712528dab4e6aec7#file-date_parser-rm_as_define-cpp
//by:
//  1) adding a macro, USE_ALTERNATIVES
//  2) using BOOST_FUSION_ADAPT_STRUCT
//  3) using rule
//  4) using force propagation flag in rule.
//to:
//  show that even with attribute propagation, the attributes will not
//  propage when there's any ALTERNATIVE's.

cppljevans

//Purpose:
//  Follow Joel's suggestion about changing the 
//  xform_rule attribute to double expressed here:
//    https://github.com/boostorg/spirit/issues/459#issuecomment-469476231
//Result:
//  **SAME** result when defined(CALL_RULE_DEFINITION_SPECIALIZATION).
//  IOW, the wrong value for `attr_rule`.  Without this define, 
//  the results are as expected, i.e. `attr_rule` == 1235.
//  However, that's because, **behind the scenes**, spirit is
//  making a redundant (i.e. useless) call to the default

cppljevans

/*=============================================================================
    Copyright (c) 2002-2015 Joel de Guzman

    Distributed under the Boost Software License, Version 1.0. (See accompanying
    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
///////////////////////////////////////////////////////////////////////////////
//
//  A parser for arbitrary tuples. This example presents a parser
//  for an employee structure.

cppljevans

-*- mode: compilation; default-directory: "~/prog_dev/boost/releases/ro/boost_1_65_1/sandbox/kojoley/test/" -*-
Compilation started at Fri Mar 23 11:20:46

make -k ls
ls -ld ../x3-variant-fixes/include/*
drwxrwxr-x 3 evansl evansl 4096 Mar 22 19:40 ../x3-variant-fixes/include/boost

Compilation finished at Fri Mar 23 11:20:46

cppljevans

//Purpose:
//  Experiment with different methods for making code here:
//    https://github.com/Kojoley/spirit/blob/8b76132c8ded0c63b8ecc7d1689627ae49d1fde9/include/boost/spirit/home/x3/operator/detail/sequence.hpp#L419
//  a little more modular and help to answer question about
//  whether to use lamba's as posed by Joel here:
//    https://github.com/boostorg/spirit/pull/370#issuecomment-369410876
//Result:
//  Works both when
//    defined(USE_CONSTEXPR_IF_LAMBDA) 
//  and when

cppljevans

//Purpose:
//  Illustrate the workings of the create_window code found in attachment to:
/*
https://groups.google.com/a/isocpp.org/forum/?utm_medium=email&utm_source=footer#!msg/std-proposals/b1X597zMx9s/4fnQB6gBCwAJ
 */
//Modifications:
//  Renamed create_window to named_args and renamed many other
//  types and variables to make them more generic or readable.
//  Added several comments explaining purpose of various parts.
//  Added extensive print statements to illustrate how code

cppljevans

//Purpose:
//  Demonstrate the purpose BOOST_SPIRIT_DEFINE
//  is to implement recursive rules.
//OriginalSource:
//  https://github.com/boostorg/spirit/blob/develop/workbench/x3/toy/toy.cpp
//Modifications:
//  Rm'ed use of context to implement recursiion and replaced with
//  BOOST_SPIRIT_DEFINE
//===========================================================================
#include <iostream>