core/mode.h

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#pragma once
 
#include <string>
#include <unordered_map>
#include <memory>
#include "utils.h"
#include "colors.h"
#include "command.h"
 
namespace teditor {
 
class Buffer;
class KeyCmdMap;
class ColorMap;
class Mode;
 
 
typedef Mode* (*ModeCreator)();
typedef std::shared_ptr<Mode> ModePtr;
typedef std::unordered_map<std::string,ModeCreator> ModeCreatorMap;
 
typedef bool (*InferMode)(const std::string&);
typedef std::unordered_map<std::string,InferMode> ModeInferMap;
 
 
class Mode {
public:
  Mode(const std::string& n, const std::string& w): name_(n), word_(w) {}
 
  virtual ~Mode() {}
 
  virtual const std::string& name() const { return name_; }
 
  virtual const std::string& word() const { return word_; }
 
  virtual int indent(Buffer& buf, int line) = 0;
 
  virtual KeyCmdMap& getKeyCmdMap() = 0;
 
  virtual ColorMap& getColorMap() = 0;
 
  virtual void getColorFor(AttrColor& fg, AttrColor& bg, int lineNum, int pos,
                           const Buffer& b, bool isHighlighted) = 0;
 
  virtual Strings cmdNames() const;
 
  static ModePtr createMode(const std::string& mode);
 
  static std::string inferMode(const std::string& file, bool isDir);
 
  struct Registrar {
    Registrar(const std::string& mode, ModeCreator fptr, InferMode iptr);
  };  // struct Registrar
 
private:
  std::string name_;
  std::string word_;
};  // class Mode
 
 
Strings allModeNames();
 
 
#define REGISTER_MODE(Name, NameStr)                                    \
  Mode::Registrar mode ## Name(NameStr, Name::create, Name::modeCheck)
 
}; // end namespace teditor