SignedConstant.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 SignedConstant.h
 *
 * Defines a class for evaluating values in the Relational Algebra Machine
 *
 ************************************************************************/
 
#pragma once
 
#include "ram/Constant.h"
#include "souffle/RamTypes.h"
#include <ostream>
 
namespace souffle::ram {
 
/**
 * @class SignedConstant
 * @brief Represents a signed constant
 *
 * For example:
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~
 * number(5)
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~
 */
class SignedConstant : public Constant {
public:
    explicit SignedConstant(RamDomain val) : Constant(val) {}
 
    /** @brief Get value of the constant. */
    RamDomain getValue() const {
        return constant;
    }
 
    /** Create clone */
    SignedConstant* clone() const override {
        return new SignedConstant(getValue());
    }
 
protected:
    void print(std::ostream& os) const override {
        os << "number(" << constant << ")";
    }
};
 
}  // namespace souffle::ram