ctrump/parser/ValueNode.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
 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/

#ifndef CFRONT_VALUE_NODE_HPP
#define CFRONT_VALUE_NODE_HPP

#include "LocationNode.hpp"
#include "BasicType.hpp"
#include "NameDescription.hpp"
#include "Environment.hpp"

namespace cfront {

union Value {
    struct DeclSpec {
        cfront::Type* type;
        cfront::NameDescription::StorageClassSpecTag ssTag;
    } declSpec;

    cfront::QualFlags qualFlags; 

    const cfront::Type* type;

    struct SignedValue {
        const cfront::Type* type;
        long long ival;
    } signedValue;

    struct UnsignedValue {
        const cfront::Type* type;
        unsigned long long ival;
    } unsignedValue;

    struct StringValue {
        const cfront::Type* type;
        std::string* sval;
    } stringValue;

    struct IdentValue {
        const cfront::Type* type;
        bool isFree; 
    } identValue;
};


class ValueNode;

typedef ANTLR_USE_NAMESPACE(antlr)ASTRefCount<ValueNode> RefValueNode;

class ValueNode : public LocationNode {
public:

    ValueNode(const ValueNode& other)
        : LocationNode(other), value_(other.value_) {}

    ValueNode() : LocationNode() 
    { 
        value_.declSpec.type = NULL;
        value_.declSpec.ssTag = cfront::NameDescription::SS_NONE;
    }
    virtual ~ValueNode() {}

    Value getValue() const
    {
        return value_;
    }

    void setValue(Value& value)
    {
        value_ = value;
    }

    Value& getValueRef() {
        return value_;
    }

    void addOptLocation(const RefValueNode& other)
    {
        LocationNode::addOptLocation(RefLocationNode(other));
    }

    virtual void initialize(int t, const ANTLR_USE_NAMESPACE(std)string& txt)
    {
        LocationNode::initialize(t, txt);
        value_.declSpec.type = NULL;
        value_.declSpec.ssTag = cfront::NameDescription::SS_NONE;
    }
    virtual void initialize(ANTLR_USE_NAMESPACE(antlr)RefToken t)
    {
        LocationNode::initialize(t);
        value_.declSpec.type = NULL;
        value_.declSpec.ssTag = cfront::NameDescription::SS_NONE;
    }
    virtual void initialize(RefValueNode ast)
    {
        LocationNode::initialize(RefLocationNode(ast));
        value_ = ast->getValue();
    }

    virtual ANTLR_USE_NAMESPACE(antlr)RefAST clone()
    {
        return ANTLR_USE_NAMESPACE(antlr)RefAST(new ValueNode(*this));
    }
    static ANTLR_USE_NAMESPACE(antlr)RefAST factory()
    {
        return ANTLR_USE_NAMESPACE(antlr)RefAST(RefValueNode(new ValueNode()));
    }

protected:
    Value value_;
};

} // namespace cfront

#endif

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

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