node_base.h

// Copyright (c) 2021, David H. Hovemeyer <david.hovemeyer@gmail.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
// THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
// OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
// OTHER DEALINGS IN THE SOFTWARE.

#ifndef NODE_BASE_H
#define NODE_BASE_H

#include <memory>
#include "type.h"
#include "symtab.h"
#include "operand.h"
#include "literal_value.h"

// The Node class will inherit from this type, so you can use it
// to define any attributes and methods that Node objects should have
// (constant value, results of semantic analysis, code generation info,
// etc.)
class NodeBase {
private:
    std::shared_ptr<Type> m_type;
    Operand m_operand;
    Symbol *m_symbol;
    LiteralValue m_lit;
    // copy ctor and assignment operator not supported
    NodeBase(const NodeBase &);
    NodeBase &operator=(const NodeBase &);

public:
    NodeBase();
    virtual ~NodeBase();
    void set_symbol(Symbol * sym);
    void set_type(const std::shared_ptr<Type> &type);
    bool has_symbol() const;
    Symbol *get_symbol() const;

    Operand get_operand() { return m_operand; };

    LiteralValue get_literal_value() { return m_lit; }

    void set_operand(const Operand& other) { m_operand = other; };

    void set_literal_value(const LiteralValue& other) { m_lit = other; };

    std::shared_ptr<Type> get_type() const;

    bool has_type() const;

    void make_function();

    void make_pointer();

    void make_array(unsigned int size);

    void un_pointer();

    void un_array();

    void clear_type_for_symbol(Symbol *sym);
};

#endif // NODE_BASE_H