#include "vcppd/vcd.h"

#include "vcppd/builder.h"

#include <cstdint>
#include <cstring>
#include <format>

using namespace vcppd;

Vcd::Vcd(const Builder& builder) :
  stream(builder.stream),
  variables(builder.variables),
  current_time(0)
{
}

Vcd::~Vcd() { stream << std::format("#{}", current_time) << std::endl; }

void Vcd::tick()
{
  stream << std::format("#{}", current_time) << std::endl;

  for (const auto& [name, entry] : variables)
  {
    stream << "b";
    for (int i = 0; i < entry.size; i++)
    {
      uint8_t byte;
      memcpy(&byte, static_cast<const uint8_t*>(entry.ref) + i, 1);
      stream << std::format("{0:b}", byte);
    }
    stream << " " << name << std::endl;
  }

  current_time += 1;
}