lang_2023/include/contexts.hpp

#pragma once

#include <string>
#include <vector>
#include <unordered_map>

// for clangd
#include "symbols_info.hpp"

namespace info {

class ContextManager {
public:
  void CallFunction(const std::vector<VariableInfo>&);
  void EnterContext();
  void ExitContext();

  void DefineVariable(const VariableInfo& variable);
  void ChangeVariableValue(const std::string& name, const Value& new_value);
  const Value& GetVariableValue(const std::string& name);
private:
  class Context {
  public:
    Context(bool hide_previous = false) : hide_previous_(hide_previous) {}

    void DefineVariable(const VariableInfo& variable);
    void ChangeVaraibleValue(const std::string& name, const Value& neew_value);
    const Value& GetVariableValue(const std::string& name);

    bool IsFirst() { return hide_previous_; }
  private:
    bool hide_previous_;
    std::unordered_map<std::string, VariableInfo> variables_;
  };

  // TODO handle current namespace (for class names, function names, etc.)
  // TODO ?? are global variables forbidden ??

  Context global_context_;
  std::vector<Context> contexts_;
};

} // namespace info