ctrump/parser/FunctionType.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
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     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,
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 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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*/

#ifndef CFRONT_FUNCTION_TYPE_HPP
#define CFRONT_FUNCTION_TYPE_HPP

#include <vector>

namespace cfront {

typedef std::vector<Type*> ParameterTypes;

class FunctionType : public Type {
public:
    FunctionType(Type* retType = NULL)
        : returnType_(retType), hasVararg_(false) {}
    FunctionType(const FunctionType& other)
        : Type(other), returnType_(other.returnType_),
          hasVararg_(other.hasVararg_)
    {
        this->parameterTypes_.resize(other.parameterTypes_.size());
        std::copy(other.parameterTypes_.begin(), other.parameterTypes_.end(),
                  this->parameterTypes_.begin());
    }

    virtual ~FunctionType() {}

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

    virtual bool isCompatibleType(const Type* other) const
    {
        const FunctionType* fo = dynamic_cast<const FunctionType*>(other);
        if (fo == NULL) return false;

        if (!returnType_->isCompatibleType(fo->returnType_)) {
            return false;
        }
        
        const ParameterTypes& otherParams = fo->parameterTypes_;
        ParameterTypes::const_iterator i, j;
        for (i = this->parameterTypes_.begin(), j = otherParams.begin();
             i != parameterTypes_.end() || j != otherParams.end(); ++i, ++j) {
            if (!(*i)->isCompatibleType(*j)) {
                return false;
            }
        }
        return i == parameterTypes_.end() && j == otherParams.end();
    }

    virtual size_t getSize(const TargetInfo& targetInfo) const
    {
        return targetInfo.getSize(TargetInfo::POINTER);
    }

    virtual size_t getAlign(const TargetInfo& targetInfo) const
    {
        return targetInfo.getAlign(TargetInfo::POINTER);
    }

    const Type* getReturnType() const
    {
        return returnType_;
    }

    const ParameterTypes& getParameterTypes() const
    {
        return parameterTypes_;
    }

    void addParameterType(Type* t)
    {
        parameterTypes_.push_back(t);
    }

    void setVararg(bool hasVararg)
    {
        hasVararg_ = hasVararg;
    }

    bool hasVararg() const
    {
        return hasVararg_;
    }

    void setReturnType(Type* t)
    {
        returnType_ = t;
    }

#ifdef PARSER_DEBUG
    virtual std::string toString() const
    {
        std::stringstream ss;
        ss << "FunctionType(";
        for (ParameterTypes::const_iterator i = parameterTypes_.begin();
             i != parameterTypes_.end(); ++i) {
            ss << " [" << (*i)->toString() << "]";
        }
        if (hasVararg_) {
            ss << " ...";
        }
        ss << " ) -> [" << returnType_->toString() << "]";
        return ss.str();
    }
#endif

protected:
    Type* returnType_;
    ParameterTypes parameterTypes_;
    bool hasVararg_;
};

} // namespace cfront

#endif


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

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