LHSValue.hh

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/*
    Copyright (c) 2002-2017 Tampere University.
 
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/**
* @file LHSValue.hh
*
* @author Lasse Lehtonen 2017 (lasse.lehtonen-no.spam-tut.fi)
*/
#pragma once
#include "HWGenTools.hh"
#include <iostream>
#include <string>
#include <unordered_set>
 
namespace HDLGenerator {
    /**
     * Base class for left-hand side values (assignments, If clauses)
     */
    class LHSValue {
    public:
        LHSValue() {}
        void hdl(std::ostream& stream, Language lang, int level);
        void hdl(std::ostream& stream, Language lang);
        void writeSignals(std::unordered_set<std::string>& readList) const;
        std::string vhdl() const { return vhdl_; }
        std::string verilog() const { return verilog_; }
 
        // Operator overloading for more readable code
        LHSValue operator||(LHSValue rhs);
        LHSValue operator|(LHSValue rhs);
        LHSValue operator&&(LHSValue rhs);
        LHSValue operator&(LHSValue rhs);
        LHSValue operator^(LHSValue rhs);
        LHSValue operator!();
        LHSValue operator~();
 
    protected:
        std::unordered_set<std::string> readList_;
        std::string vhdl_;
        std::string verilog_;
    };
 
    /**
     * Base class for left-hand side values (assignments, If clauses)
     */
    class LHSSignal : public LHSValue {
    public:
        LHSSignal(std::string name);
    };
 
    class BinaryLiteral : public LHSValue {
    public:
        BinaryLiteral(std::string value);
        BinaryLiteral(int value, int width, bool signExtend);
        std::string name() { return value_; }
    private:
        std::string value_;
    };
}