BytecodeSerializer.hpp

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#pragma once
#include "../CodeGen.hpp"
#include <cstdint>
#include <fstream>
#include <string>
#include <vector>
#include <filesystem>
#include <unordered_map>
#include <phsint.hpp>

namespace Phasor
{

class BytecodeSerializer
{
  public:
    std::vector<u8> serialize(const Bytecode &bytecode);

    bool saveToFile(const Bytecode &bytecode, const std::filesystem::path &filename);
 
  private:
    std::vector<u8> buffer;
 
    void writeUInt8(u8 value);                
    void writeUInt16(u16 value);              
    void writeUInt32(u32 value);              
    void writeInt32(i32 value);               
    void writeInt64(i64 value);               
    void writeDouble(f64 value);              
    void writeString(const std::string &str); 

    void writeValue(const Value &val);

    void writeHeader(u32 dataChecksum);                          
    void writeConstantPool(const std::vector<Value> &constants); 
    void writeVariableMapping(const std::unordered_map<std::string, int> &variables,
                              int nextVarIndex);                          
    void writeInstructions(const std::vector<Instruction> &instructions); 
    void writeFunctionEntries(
        const std::unordered_map<std::string, int> &functionEntries); 
    void writeStructSection(const std::vector<StructInfo> &structs);  

    static u32 calculateCRC32(const std::vector<u8> &data);
};
} // namespace Phasor