/*
	This file is part of solidity.

	solidity 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.

	solidity 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 solidity.  If not, see <http://www.gnu.org/licenses/>.
*/
// SPDX-License-Identifier: GPL-3.0
/**
 * @author Lefteris <lefteris@ethdev.com>
 * @date 2014, 2015
 * Parses a given docstring into pieces introduced by tags.
 */

#pragma once

#include <libsolidity/ast/ASTAnnotations.h>
#include <liblangutil/SourceLocation.h>
#include <string>

namespace solidity::langutil
{
class ErrorReporter;
}

namespace solidity::frontend
{

class StructuredDocumentation;

class DocStringParser
{
public:
	/// @param _documentedNode the node whose documentation is parsed.
	DocStringParser(StructuredDocumentation const& _documentedNode, langutil::ErrorReporter& _errorReporter):
		m_node(_documentedNode),
		m_errorReporter(_errorReporter)
	{}
	std::multimap<std::string, DocTag> parse();

private:
	using iter = std::string::const_iterator;

	iter parseDocTagLine(iter _pos, iter _end, bool _appending);
	iter parseDocTagParam(iter _pos, iter _end);

	/// Parses the doc tag named @a _tag, adds it to m_docTags and returns the position
	/// after the tag.
	iter parseDocTag(iter _pos, iter _end, std::string const& _tag);

	/// Creates and inserts a new tag and adjusts m_lastTag.
	void newTag(std::string const& _tagName);

	StructuredDocumentation const& m_node;
	langutil::ErrorReporter& m_errorReporter;
	/// Mapping tag name -> content.
	std::multimap<std::string, DocTag> m_docTags;
	DocTag* m_lastTag = nullptr;
};

}