#include "SymTable.hpp"

namespace roza
{
  /*static*/ int SymTable::addr = 0;

  /*explicit*/ SymTable::SymTable()
  {
  }

  /*explicit*/ SymTable::SymTable(SymTable const& sym_table)
  {
    m_scope = sym_table.m_scope;

    for (auto const& entry: sym_table.m_entries)
      {
        m_entries[entry.first] = entry.second;
      }
  }

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

  int SymTable::declare(std::string const& name, std::shared_ptr<Node> node)
  {
    assert(!exists(name));

    m_entries.insert({name, SymEntry {
          SymTable::addr++,
          m_scope,
          node,
          false
        }});

    return SymTable::addr - 1;
  }

  int SymTable::declare_mut(std::string const& name, std::shared_ptr<Node> node)
  {
    assert(!exists(name));

    m_entries.insert({name, SymEntry {
          SymTable::addr++,
          m_scope,
          node,
          true
        }});

    return SymTable::addr - 1;
  }

  SymEntry& SymTable::find(std::string const& name)
  {
    assert(exists(name));
    return m_entries[name];
  }

  SymEntry const& SymTable::find(std::string const& name) const
  {
    assert(exists(name));
    return m_entries.at(name);
  }

  bool SymTable::exists(std::string const& name) const
  {
    return m_entries.find(name) != std::end(m_entries);
  }
}