#include "Compiler.hpp"
#include "src/Node.hpp"
#include "src/Program.hpp"

namespace zn
{
  /*explicit*/ Compiler::Compiler(Logger& logger)
    : m_logger { logger }
  {
  }

  /*virtual*/ Compiler::~Compiler()
  {
  }

  void Compiler::compile(Node const& node, Program& program)
  {
    switch (node.type())
      {
      case NODE_MODULE: {
        for (size_t i=0; i<node.size(); i++)
          {
            compile(*node.child_at(i), program);
            program.append(OPCODE_POP);
          }
      } break;

      case NODE_INT: {
        size_t addr = program
          .add_constant(std::make_shared<Constant>
                        (TYPE_INT, std::stoi(node.repr())));
        program.append(OPCODE_LOAD_CONST, addr);
      } break;

      default: {
        std::cerr << "cannot compile node '"
                  << node.string() << "'" << std::endl;
        abort();
      } break;
      }
  }
}