TupleOperation.h

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/*
 * Souffle - A Datalog Compiler
 * Copyright (c) 2013, 2014, 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 TupleOperation.h
 *
 ***********************************************************************/
 
#pragma once
 
#include "ram/NestedOperation.h"
#include "ram/Node.h"
#include "ram/Operation.h"
#include <memory>
#include <string>
#include <utility>
#include <vector>
 
namespace souffle::ram {
 
/**
 * @class TupleOperation
 * @brief Abstract class for relation searches and lookups
 */
class TupleOperation : public NestedOperation {
public:
    TupleOperation(int ident, Own<Operation> nested, std::string profileText = "")
            : NestedOperation(std::move(nested), std::move(profileText)), identifier(ident) {}
 
    TupleOperation* clone() const override = 0;
 
    /** @brief Get identifier */
    int getTupleId() const {
        return identifier;
    }
 
    /** @brief Set identifier */
    void setTupleId(int id) {
        identifier = id;
    }
 
    std::vector<const Node*> getChildNodes() const override {
        return NestedOperation::getChildNodes();
    }
 
protected:
    bool equal(const Node& node) const override {
        const auto& other = static_cast<const TupleOperation&>(node);
        return NestedOperation::equal(other) && identifier == other.identifier;
    }
 
    /**
     * Identifier for the tuple, corresponding to
     * its position in the loop nest
     */
    int identifier;
};
 
}  // namespace souffle::ram