mirror of
https://onedev.site.tesses.net/crosslang
synced 2026-03-26 07:31:22 +00:00
453 lines
16 KiB
C++
453 lines
16 KiB
C++
#include "CrossLang.hpp"
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#include <cstring>
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#include <filesystem>
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#include <iostream>
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namespace Tesses::CrossLang
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{
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TFile* TFile::Create(GCList& ls)
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{
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TFile* f = new TFile();
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f->icon = -1;
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GC* _gc = ls.GetGC();
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ls.Add(f);
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_gc->Watch(f);
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return f;
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}
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TFile* TFile::Create(GCList* ls)
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{
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TFile* f = new TFile();
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f->icon=-1;
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GC* _gc = ls->GetGC();
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ls->Add(f);
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_gc->Watch(f);
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return f;
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}
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void TFileChunk::Mark()
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{
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if(this->marked) return;
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this->marked=true;
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this->file->Mark();
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}
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TFileChunk* TFileChunk::Create(GCList& ls)
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{
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TFileChunk* chk = new TFileChunk();
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GC* _gc = ls.GetGC();
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ls.Add(chk);
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_gc->Watch(chk);
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return chk;
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}
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TFileChunk* TFileChunk::Create(GCList* ls)
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{
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TFileChunk* chk = new TFileChunk();
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GC* _gc = ls->GetGC();
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ls->Add(chk);
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_gc->Watch(chk);
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return chk;
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}
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void TFile::Mark()
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{
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if(this->marked) return;
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this->marked=true;
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for(auto item : this->chunks)
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item->Mark();
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}
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void TFile::Skip(std::shared_ptr<Tesses::Framework::Streams::Stream> stream,size_t len)
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{
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if(stream->CanSeek())
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{
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stream->Seek((int64_t)len,Tesses::Framework::Streams::SeekOrigin::Current);
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}
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else{
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uint8_t* buffer=new uint8_t[len];
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Ensure(stream,buffer,len);
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delete[] buffer;
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}
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}
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void TFile::Ensure(std::shared_ptr<Tesses::Framework::Streams::Stream> stream, uint8_t* buffer,size_t len)
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{
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size_t read = stream->ReadBlock(buffer, len);
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if(read < len) throw VMException("End of file, could not read " + std::to_string((int64_t)len) + " byte(s)., offset=" + std::to_string(stream->GetLength()));
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}
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std::string TFile::EnsureString(std::shared_ptr<Tesses::Framework::Streams::Stream> stream)
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{
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auto len = EnsureInt(stream);
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if(len == 0) return {};
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std::string str={};
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str.resize((size_t)len);
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Ensure(stream,(uint8_t*)str.data(),str.size());
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return str;
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}
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uint32_t TFile::EnsureInt(std::shared_ptr<Tesses::Framework::Streams::Stream> stream)
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{
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uint8_t buffer[4];
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Ensure(stream,buffer,4);
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return BitConverter::ToUint32BE(buffer[0]);
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}
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std::string TFile::GetString(std::shared_ptr<Tesses::Framework::Streams::Stream> stream)
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{
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uint32_t index=EnsureInt(stream);
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if(index >= this->strings.size()) throw VMException("String does not exist in TCrossVM file, expected string index: " + std::to_string(index) + ", total strings: " + std::to_string(this->strings.size()));
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return this->strings[index];
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}
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void TFile::EnsureCanRunInCrossLang()
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{
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if(this->vms.empty()) return;
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for(auto item : this->vms)
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{
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if(item.first == VMName)
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{
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return;
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}
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}
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std::string errorMessage="The virtual machines supported are:\n";
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for(auto item : this->vms)
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{
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errorMessage += item.first + "\n\t" + item.second + "\n";
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}
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throw VMException(errorMessage);
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}
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TDictionary* TFile::MetadataDecode(GCList& ls, size_t midx)
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{
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if(midx >= this->metadata.size()) return nullptr;
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if(this->metadata[midx].second.empty()) return nullptr;
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if(this->metadata[midx].second[0] != 8) return nullptr;
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size_t index = 0;
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auto& bytes = this->metadata[midx].second;
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std::function<TObject()> parseEnt;
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parseEnt = [&]()->TObject {
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if(index >= bytes.size()) throw std::out_of_range("Abrupt end of metadata");
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switch(bytes[index++])
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{
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case 0:
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return false;
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case 1:
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return true;
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case 2:
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return nullptr;
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case 3:
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{
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if(index + 8 <= bytes.size())
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{
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auto val= BitConverter::ToUint64BE(bytes[index]);
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index+=8;
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int64_t val2;
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memcpy(&val2,&val,sizeof(val));
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return val2;
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}
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else throw std::out_of_range("Abrupt end of metadata");
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}
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break;
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case 4:
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{
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if(index + 8 <= bytes.size())
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{
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auto val= BitConverter::ToDoubleBE(bytes[index]);
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index+=8;
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return val;
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}
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else throw std::out_of_range("Abrupt end of metadata");
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}
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break;
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case 5:
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if(index + 1 <= bytes.size())
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{
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return (char)bytes[index++];
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}
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else throw std::out_of_range("Abrupt end of metadata");
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break;
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case 6:
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{
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if(index + 4 <= bytes.size())
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{
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auto val= BitConverter::ToUint32BE(bytes[index]);
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index+=4;
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return this->strings.at((size_t)val);
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} else throw std::out_of_range("Abrupt end of metadata");
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}
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break;
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case 7:
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{
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if(index + 4 <= bytes.size())
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{
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auto val= BitConverter::ToUint32BE(bytes[index]);
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index+=4;
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std::vector<TObject> items;
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for(uint32_t i = 0; i < val; i++)
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{
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items.push_back(parseEnt());
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}
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return TList::Create(ls,items.begin(),items.end());
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} else throw std::out_of_range("Abrupt end of metadata");
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}
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break;
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case 8:
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if(index + 4 <= bytes.size())
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{
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auto val= BitConverter::ToUint32BE(bytes[index]);
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index+=4;
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std::vector<TDItem> items;
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for(uint32_t i = 0; i < val; i++)
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{
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if(index + 4 <= bytes.size())
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{
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auto val2= BitConverter::ToUint32BE(bytes[index]);
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index+=4;
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std::string& text=this->strings.at((size_t)val2);
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items.emplace_back(text,parseEnt());
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} else throw std::out_of_range("Abrupt end of metadata");
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}
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return TDictionary::Create(ls, items.begin(),items.end());
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}else throw std::out_of_range("Abrupt end of metadata");
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break;
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case 9:
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{
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if(index + 4 <= bytes.size())
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{
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auto val= BitConverter::ToUint32BE(bytes[index]);
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index+=4;
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auto ba = TByteArray::Create(ls);
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ba->data = this->resources.at((size_t)val);
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return ba;
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} else throw std::out_of_range("Abrupt end of metadata");
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}
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break;
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case 10:
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{
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if(index + 4 <= bytes.size())
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{
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auto val= BitConverter::ToUint32BE(bytes[index]);
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index+=4;
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return std::make_shared<EmbedStream>(ls.GetGC(),this,val);
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} else throw std::out_of_range("Abrupt end of metadata");
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}
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break;
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case 11:
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{
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auto data = parseEnt();
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TDictionary* dict;
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if(GetObjectHeap(data,dict))
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{
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return std::make_shared<EmbedDirectory>(ls.GetGC(),dict);
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}
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else return Undefined();
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}
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break;
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case 12:
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{
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if(index + 4 <= bytes.size())
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{
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auto val= BitConverter::ToUint32BE(bytes[index]);
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index+=4;
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ls.GetGC()->BarrierBegin();
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auto em = TExternalMethod::Create(ls,"",{},[val,this](GCList& ls, std::vector<TObject> args)->TObject {
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return std::make_shared<EmbedStream>(ls.GetGC(),this,val);
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});
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em->watch.push_back(this);
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ls.GetGC()->BarrierEnd();
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return em;
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} else throw std::out_of_range("Abrupt end of metadata");
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}
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break;
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default:
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throw std::runtime_error("Invalid metadata opcode");
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}
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};
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TDictionary* dict_res;
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TObject ent = parseEnt();
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if(GetObjectHeap(ent, dict_res)) return dict_res;
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return nullptr;
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}
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void TFile::Load(GC* gc, std::shared_ptr<Tesses::Framework::Streams::Stream> stream)
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{
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uint8_t main_header[18];
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Ensure(stream,main_header,sizeof(main_header));
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if(strncmp((const char*)main_header,"TCROSSVM",8) != 0) throw VMException("Invalid TCrossVM image.");
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TVMVersion version(main_header+8);
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if(version.CompareToRuntime() == 1)
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{
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throw VMException("Runtime is too old.");
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}
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TVMVersion v2(main_header+13);
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this->version = v2;
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size_t _len = (size_t)EnsureInt(stream);
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char table_name[4];
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for(size_t i = 0;i < _len; i++)
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{
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Ensure(stream,(uint8_t*)table_name,sizeof(table_name));
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size_t tableLen = (size_t)EnsureInt(stream);
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if(strncmp(table_name,"NAME",4) == 0)
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{
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this->name = GetString(stream);
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}
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else if(strncmp(table_name,"INFO",4) == 0)
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{
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this->info = GetString(stream);
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}
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else if(strncmp(table_name,"DEPS",4) == 0) //dependencies
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{
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std::string name = GetString(stream);
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uint8_t version_bytes[5];
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Ensure(stream,version_bytes,sizeof(version_bytes));
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TVMVersion depVersion(version_bytes);
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this->dependencies.push_back(std::pair<std::string,TVMVersion>(name, depVersion));
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}
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else if(strncmp(table_name,"TOOL",4) == 0) //compile tools (for package manager)
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{
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std::string name = GetString(stream);
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uint8_t version_bytes[5];
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Ensure(stream,version_bytes,sizeof(version_bytes));
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TVMVersion depVersion(version_bytes);
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this->tools.push_back(std::pair<std::string,TVMVersion>(name, depVersion));
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}
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else if(strncmp(table_name,"RESO",4) == 0) //resources (using embed)
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{
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auto& data = this->resources.emplace_back(tableLen);
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Ensure(stream,data.data(), data.size());
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}
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else if(strncmp(table_name,"CHKS",4) == 0 && gc != nullptr) //chunks
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{
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GCList ls(gc);
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size_t chunkCount = (size_t)EnsureInt(stream);
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for(size_t j = 0; j < chunkCount; j++)
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{
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auto chunk = TFileChunk::Create(ls);
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chunk->file = this;
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size_t argCount = (size_t)EnsureInt(stream);
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for(size_t k = 0; k < argCount; k++)
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{
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chunk->args.push_back(GetString(stream));
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}
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size_t len = (size_t)EnsureInt(stream);
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chunk->code.resize(len);
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Ensure(stream,chunk->code.data(),len);
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//reader.ReadIntoBuffer(chunk->code);
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this->chunks.push_back(chunk);
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}
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}
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else if(strncmp(table_name,"FUNS",4) == 0) //functions
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{
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size_t funLength = (size_t)EnsureInt(stream);
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for(size_t j = 0; j < funLength;j++)
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{
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std::vector<std::string> fnParts;
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uint32_t fnPartsC = EnsureInt(stream);
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for(uint32_t k = 0; k < fnPartsC; k++)
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{
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fnParts.push_back(GetString(stream));
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}
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uint32_t fnNumber = EnsureInt(stream);
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this->functions.push_back(std::pair<std::vector<std::string>,uint32_t>(fnParts,fnNumber));
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}
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}
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else if(strncmp(table_name,"STRS",4) == 0) //strings
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{
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size_t strsLen = (size_t)EnsureInt(stream);
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for(size_t j = 0;j < strsLen;j++)
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{
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this->strings.push_back(EnsureString(stream));
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}
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}
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else if(strncmp(table_name,"ICON",4) == 0) //icon
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{
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this->icon = (int32_t)EnsureInt(stream);
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}
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else if(strncmp(table_name,"MACH",4) == 0) //machine
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{
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std::string name = GetString(stream);
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std::string howToGet = GetString(stream);
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this->vms.push_back(std::pair<std::string,std::string>(name,howToGet));
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}
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else if(strncmp(table_name,"CLSS",4) == 0) //classes
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{
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uint32_t clsCnt = EnsureInt(stream);
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for(uint32_t j = 0; j < clsCnt; j++)
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{
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TClass cls;
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cls.documentation= GetString(stream);
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uint32_t name_cnt = EnsureInt(stream);
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for(uint32_t k = 0; k < name_cnt; k++)
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{
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cls.name.push_back(GetString(stream));
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}
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name_cnt = EnsureInt(stream);
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for(uint32_t k = 0; k < name_cnt; k++)
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{
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cls.inherits.push_back(GetString(stream));
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}
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name_cnt = EnsureInt(stream);
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for(uint32_t k = 0; k < name_cnt; k++)
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{
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TClassEntry ent;
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Ensure(stream,main_header,1);
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uint8_t sig = main_header[0];
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ent.isAbstract = (sig & 0b00001000) != 0;
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ent.isFunction = (sig & 0b00000100) == 0;
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ent.modifier = (TClassModifier)(sig & 3);
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ent.documentation = GetString(stream);
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ent.name = GetString(stream);
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uint32_t arglen = EnsureInt(stream);
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for(uint32_t l = 0; l < arglen; l++)
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ent.args.push_back(GetString(stream));
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ent.chunkId = EnsureInt(stream);
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cls.entry.push_back(ent);
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}
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this->classes.push_back(cls);
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}
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}
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else if(strncmp(table_name,"META",4) == 0) //structured metadata
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{
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if(tableLen > 4)
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{
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auto name = this->GetString(stream);
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auto& data = this->metadata.emplace_back(name, std::vector<uint8_t>(tableLen-4));
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Ensure(stream,data.second.data(), tableLen-4);
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}
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else throw VMException("meta tag is not valid");
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}
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else
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{
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auto& data = this->sections.emplace_back(std::string(table_name, 4), std::vector<uint8_t>(tableLen));
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Ensure(stream,data.second.data(), tableLen);
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}
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}
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}
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}
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