crosslang/src/vm/bc/tostring.cpp

#include "CrossLang.hpp"
#include "TessesFramework/Serialization/BitConverter.hpp"
#include "TessesFramework/Streams/ByteReader.hpp"
#include "TessesFramework/Uuid.hpp"
#include <cstddef>
#include <exception>
#include <iostream>
#include <cmath>
#include <cstring>
#include <sstream>
#include <variant>
namespace Tesses::CrossLang {
     std::string ToString(GC* gc, TObject o)
    {
        if(std::holds_alternative<Tesses::Framework::Filesystem::VFSPath>(o))
        {
            return std::get<Tesses::Framework::Filesystem::VFSPath>(o).ToString();
        }
        if(std::holds_alternative<std::string>(o))
        {
            return std::get<std::string>(o);
        }
        if(std::holds_alternative<TVMVersion>(o))
        {
            return std::get<TVMVersion>(o).ToString();
        }
        if(std::holds_alternative<int64_t>(o))
        {
            return std::to_string(std::get<int64_t>(o));
        }

        if(std::holds_alternative<double>(o))
        {
            return std::to_string(std::get<double>(o));
        }

        if(std::holds_alternative<char>(o))
        {
            return std::string{std::get<char>(o)};
        }
        if(std::holds_alternative<std::nullptr_t>(o))
        {
            return "null";
        }
        if(std::holds_alternative<Undefined>(o))
        {
            return "undefined";
        }
        if(std::holds_alternative<bool>(o))
        {
            return std::get<bool>(o) ? "true" : "false";
        }
        if(std::holds_alternative<std::shared_ptr<Tesses::Framework::Date::DateTime>>(o))
        {
            return std::get<std::shared_ptr<Tesses::Framework::Date::DateTime>>(o)->ToString();
        }
        if(std::holds_alternative<std::shared_ptr<Tesses::Framework::Date::TimeSpan>>(o))
        {
            return std::get<std::shared_ptr<Tesses::Framework::Date::TimeSpan>>(o)->ToString(false);
        }
        if(std::holds_alternative<Tesses::Framework::Uuid>(o))
        {
            return std::get<Tesses::Framework::Uuid>(o).ToString(Framework::UuidStringifyConfig::LowercaseNoCurly);
        }
        if(std::holds_alternative<THeapObjectHolder>(o))
        {
            auto obj = std::get<THeapObjectHolder>(o).obj;
            auto dict = dynamic_cast<TDictionary*>(obj);
            auto list = dynamic_cast<TList*>(obj);
            auto bArray = dynamic_cast<TByteArray*>(obj);
            auto natObj = dynamic_cast<TNativeObject*>(obj);
            auto cls = dynamic_cast<TClassObject*>(obj);
            auto aArray = dynamic_cast<TAssociativeArray*>(obj);
            if(aArray != nullptr)
            {

                std::string str={};
                
                gc->BarrierBegin();
                bool first=true;
                for(auto item : aArray->items)
                {
                    if(!first) str.push_back('\n');
                    first=false;
                    str.push_back('[');
                    str.append(Json_Encode(item.first));
                    str.append("] = ");
                    str.append(Json_Encode(item.second));
                    str.append(";");
                }
                gc->BarrierEnd();
                return str;
            }
            if(cls != nullptr)
            {
                auto res = cls->GetValue("","ToString");
                TCallable* call;
                GCList ls(gc);
                if(GetObjectHeap(res,call)) return ToString(gc, call->Call(ls,{}));
                return cls->TypeName();
            }
            if(natObj != nullptr)
            {
                GCList ls(gc);
                TObject o=natObj->CallMethod(ls,"ToString",{});
               

                return ToString(gc, o);
            }
            
            if(dict != nullptr)
            {
                GCList ls(gc);
                if(dict->MethodExists(ls,"ToString"))
                    return ToString(gc,dict->CallMethod(ls,"ToString",{}));
                else
                {
                    return Json_Encode(dict);
                }
            }
            else if(bArray != nullptr)
            {
                return std::string(bArray->data.begin(),bArray->data.end());
            }
            else if(list != nullptr) 
            {
                return Json_Encode(list);
            }
      }

        return "";
    }
}