ctrump/parser/BasicType.hpp

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/*
 Copyright (c) 2009, National Institute of Advanced Industrial Science
 and Technology.  All rights reserved.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are
 met:
 
   * Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.
 
   * Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
     distribution.
 
   * Neither the name of Fixstars Corporation nor the names of its
     contributors may be used to endorse or promote products derived
     from this software without specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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*/

#ifndef CFRONT_BASIC_TYPE_HPP
#define CFRONT_BASIC_TYPE_HPP

#include "Type.hpp"
#include <cstdlib>

namespace cfront {

class BasicType : public Type {
public:

    enum PrimitiveTag {
        NONE,
        BOOL,
        CHAR,
        SCHAR,
        UCHAR,
        SSHORT,
        USHORT,
        SINT,
        UINT,
        SLONG,
        ULONG,
        SLLONG,
        ULLONG,
        FLOAT,
        DOUBLE,
        LDOUBLE,
        VOID,
        VA_LIST
    };

    static bool isArithmeticTypeTag(PrimitiveTag t)
    {
        return BOOL <= t && t <= LDOUBLE;
    }

    static bool isIntegerTypeTag(PrimitiveTag t)
    {
        return BOOL <= t && t <= ULLONG;
    }

    BasicType(PrimitiveTag primitiveTag, QualFlags qualFlags = 0)
        : primitiveTag_(primitiveTag), qualFlags_(qualFlags) {}
    BasicType(const BasicType& other)
        : Type(other), primitiveTag_(other.primitiveTag_),
          qualFlags_(other.qualFlags_) {}

    virtual ~BasicType() {}

    virtual BasicType* clone() const
    {
        return new BasicType(*this);
    }

    virtual bool isCompatibleType(const Type* other) const
    {
        const BasicType* bo = dynamic_cast<const BasicType*>(other);
        if (bo == NULL) return false;
        return this->primitiveTag_ == bo->primitiveTag_;
    }

    virtual bool isScalarType() const
    {
        return isArithmeticType();
    }

    virtual bool isArithmeticType() const
    {
        return isArithmeticTypeTag(primitiveTag_);
    }

    virtual bool isIntegerType() const
    {
        return isIntegerTypeTag(primitiveTag_);
    }

    virtual bool isVoidType() const
    {
        return primitiveTag_ == VOID;
    }

    virtual size_t getSize(const TargetInfo& targetInfo) const
    {
        TargetInfo::Type tt = getTargetType(primitiveTag_);
        return targetInfo.getSize(tt);
    }

    virtual size_t getAlign(const TargetInfo& targetInfo) const
    {
        TargetInfo::Type tt = getTargetType(primitiveTag_);
        return targetInfo.getAlign(tt);
    }

    PrimitiveTag getPrimitiveTag() const
    {
        return primitiveTag_;
    }

    QualFlags getQualFlags() const
    {
        return qualFlags_;
    }

    void setQualFlags(QualFlags qf)
    {
        qualFlags_ = qf;
    }

#ifdef PARSER_DEBUG
    virtual std::string toString() const
    {
        std::stringstream ss;
        ss << "BaiscType[ " << primitiveTag_ << " (" <<
            toStringQualFlags(qualFlags_) << ")]";
        return ss.str();
    }
#endif

protected:
    PrimitiveTag primitiveTag_;
    QualFlags qualFlags_;

    TargetInfo::Type getTargetType(PrimitiveTag pt) const
    {
        static TargetInfo::Type TargetTypeTbl[] = {
            TargetInfo::LASTTYPE, TargetInfo::BOOL, TargetInfo::CHAR,
            TargetInfo::CHAR, TargetInfo::CHAR, TargetInfo::SHORT,
            TargetInfo::SHORT, TargetInfo::INT, TargetInfo::INT,
            TargetInfo::LONG, TargetInfo::LONG, TargetInfo::LLONG,
            TargetInfo::LLONG, TargetInfo::FLOAT, TargetInfo::DOUBLE,
            TargetInfo::LDOUBLE };
        unsigned int i = (unsigned int) pt;
        if (i >= sizeof(TargetTypeTbl) / sizeof(TargetInfo::Type)) {
            /* internal error. */
            std::abort();
        }
        TargetInfo::Type tt = TargetTypeTbl[i];
        if (tt == TargetInfo::LASTTYPE) {
            /* internal error. */
            std::abort();
        }
        return tt;
    }
};

} // namespace cfront

#endif


/*
 * Local Variables:
 * mode: C++
 * c-basic-offset: 4
 * indent-tabs-mode: nil
 * End:
 */

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