/*
	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

#include <libsolidity/ast/CallGraph.h>

using namespace std;
using namespace solidity::frontend;

bool CallGraph::CompareByID::operator()(Node const& _lhs, Node const& _rhs) const
{
	if (_lhs.index() != _rhs.index())
		return _lhs.index() < _rhs.index();

	if (holds_alternative<SpecialNode>(_lhs))
		return get<SpecialNode>(_lhs) < get<SpecialNode>(_rhs);
	return get<CallableDeclaration const*>(_lhs)->id() < get<CallableDeclaration const*>(_rhs)->id();
}

bool CallGraph::CompareByID::operator()(Node const& _lhs, int64_t _rhs) const
{
	solAssert(!holds_alternative<SpecialNode>(_lhs), "");

	return get<CallableDeclaration const*>(_lhs)->id() < _rhs;
}

bool CallGraph::CompareByID::operator()(int64_t _lhs, Node const& _rhs) const
{
	solAssert(!holds_alternative<SpecialNode>(_rhs), "");

	return _lhs < get<CallableDeclaration const*>(_rhs)->id();
}