Location.h

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/*
 * Souffle - A Datalog Compiler
 * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved
 * Licensed under the Universal Permissive License v 1.0 as shown at:
 * - https://opensource.org/licenses/UPL
 * - <souffle root>/licenses/SOUFFLE-UPL.txt
 */
 
/************************************************************************
 *
 * @file Location.h
 *
 ***********************************************************************/
 
#pragma once
 
#include "souffle/utility/ContainerUtil.h"
#include "souffle/utility/MiscUtil.h"
#include <ostream>
#include <string>
#include <utility>
 
namespace souffle::ast2ram {
 
struct Location {
    const int identifier;
    const int element;
    std::string relation;
 
    Location(int ident, int elem, std::string rel = "")
            : identifier(ident), element(elem), relation(std::move(rel)) {}
 
    Location(const Location& l) = default;
 
    bool operator==(const Location& loc) const {
        return identifier == loc.identifier && element == loc.element;
    }
 
    bool operator!=(const Location& loc) const {
        return !(*this == loc);
    }
 
    bool operator<(const Location& loc) const {
        return identifier < loc.identifier || (identifier == loc.identifier && element < loc.element);
    }
 
    void print(std::ostream& out) const {
        out << "(" << identifier << "," << element << ")";
    }
 
    friend std::ostream& operator<<(std::ostream& out, const Location& loc) {
        loc.print(out);
        return out;
    }
};
 
}  // namespace souffle::ast2ram