symbol_definition.h

#ifndef SYMBOL_DEFINITION_H
#define SYMBOL_DEFINITION_H
 
#include <iostream>
#include <optional>
#include <string>
#include "../common.h"
#include "location.h"
 
namespace Linker
{
    class SymbolDefinition
    {
    public:
        std::string name;
        enum binding_type
        {
            Undefined,
            Local,
            Global,
            Weak,
            Common,
            LocalCommon,
        };
        binding_type binding = Undefined;
        Location location;
        offset_t size = 0, align = 1;
        std::string section_name, alternative_section_name;
 
    protected:
        SymbolDefinition(std::string name, binding_type binding, Location location, offset_t size, offset_t align, std::string section_name = "", std::string alternative_section_name = "")
            : name(name), binding(binding), location(location), size(size), align(align), section_name(section_name), alternative_section_name(alternative_section_name)
        {
        }
 
    public:
        SymbolDefinition()
        {
        }
 
        static SymbolDefinition CreateUndefined(std::string name, offset_t size = 0, offset_t align = 1);
        static SymbolDefinition CreateLocal(std::string name, Location location, offset_t size = 0, offset_t align = 1);
        static SymbolDefinition CreateGlobal(std::string name, Location location, offset_t size = 0, offset_t align = 1);
        static SymbolDefinition CreateWeak(std::string name, Location location, offset_t size = 0, offset_t align = 1);
        static SymbolDefinition CreateCommon(std::string name, std::string section, offset_t size = 0, offset_t align = 1);
        static SymbolDefinition CreateCommon(std::string name, std::string section, offset_t size, offset_t align, std::string alternative_section);
        static SymbolDefinition CreateCommon(std::string name, std::string section, std::string alternative_section);
        static SymbolDefinition CreateLocalCommon(std::string name, std::string section, offset_t size = 0, offset_t align = 1);
        static SymbolDefinition CreateLocalCommon(std::string name, std::string section, offset_t size, offset_t align, std::string alternative_section);
        static SymbolDefinition CreateLocalCommon(std::string name, std::string section, std::string alternative_section);
 
        bool operator ==(const SymbolDefinition& other) const;
 
        bool IsLocal() const;
        bool IsCommon() const;
        bool IsAllocated() const;
 
        bool Displace(const Displacement& displacement);
    };
 
    std::ostream& operator <<(std::ostream& out, const SymbolDefinition& symbol);
}
 
#endif /*  SYMBOL_DEFINITION_H */