113 lines
3.6 KiB
C++
113 lines
3.6 KiB
C++
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2021 Ola Rinta-Koski
|
|
* Copyright (C) 2021 KiCad Developers, see AUTHORS.txt for contributors.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License as published by the
|
|
* Free Software Foundation, either version 3 of the License, or (at your
|
|
* option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful, but
|
|
* WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along
|
|
* with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef MARKUP_PARSER_H
|
|
#define MARKUP_PARSER_H
|
|
|
|
#include <pegtl.hpp>
|
|
#include <pegtl/contrib/parse_tree.hpp>
|
|
#include <iostream>
|
|
#include <string>
|
|
#include <utf8.h>
|
|
|
|
|
|
namespace MARKUP
|
|
{
|
|
using namespace tao::pegtl;
|
|
|
|
struct subscript;
|
|
struct superscript;
|
|
struct overbar;
|
|
|
|
struct NODE : parse_tree::basic_node<NODE>
|
|
{
|
|
std::string asString() const;
|
|
|
|
std::string typeString() const;
|
|
|
|
bool isOverbar() const { return is_type<MARKUP::overbar>(); }
|
|
bool isSubscript() const { return is_type<MARKUP::subscript>(); }
|
|
bool isSuperscript() const { return is_type<MARKUP::superscript>(); }
|
|
};
|
|
|
|
template< typename ControlChar >
|
|
struct plain : seq< not_at< seq< ControlChar, string< '{' > > >, ControlChar > {};
|
|
|
|
struct plainControlChar : sor< plain< string<'_'> >,
|
|
plain< string<'^'> >,
|
|
plain< string<'~'> > > {};
|
|
/**
|
|
* anyString =
|
|
* a run of characters that do not start a command sequence, or if they do, they do not start
|
|
* a complete command prefix (command char + open brace)
|
|
*/
|
|
struct anyString : plus< sor< utf8::not_one< '~', '_', '^' >,
|
|
plainControlChar > > {};
|
|
|
|
struct anyStringWithinBraces : plus< sor< utf8::not_one< '~', '_', '^', '}' >,
|
|
plainControlChar > > {};
|
|
|
|
template< typename ControlChar >
|
|
struct braces : seq< seq< ControlChar, string< '{' > >,
|
|
until< string< '}' >, sor< anyStringWithinBraces,
|
|
subscript,
|
|
superscript,
|
|
overbar > > > {};
|
|
|
|
struct superscript : braces< string< '^' > > {};
|
|
struct subscript : braces< string< '_' > > {};
|
|
struct overbar : braces< string< '~' > > {};
|
|
|
|
/**
|
|
* Finally, the full grammar
|
|
*/
|
|
struct anything : sor< anyString,
|
|
subscript,
|
|
superscript,
|
|
overbar > {};
|
|
|
|
struct grammar : until< tao::pegtl::eof, anything > {};
|
|
|
|
template <typename Rule>
|
|
using selector = parse_tree::selector< Rule,
|
|
parse_tree::store_content::on< anyStringWithinBraces,
|
|
anyString >,
|
|
parse_tree::discard_empty::on< superscript,
|
|
subscript,
|
|
overbar > >;
|
|
|
|
class MARKUP_PARSER
|
|
{
|
|
public:
|
|
MARKUP_PARSER( const std::string& source ) :
|
|
in( source, "from_input" )
|
|
{}
|
|
|
|
std::unique_ptr<NODE> Parse();
|
|
|
|
private:
|
|
string_input<> in;
|
|
};
|
|
|
|
} // namespace MARKUP
|
|
|
|
|
|
#endif //MARKUP_PARSER_H
|