mycpp

Coverage Report

Created: 2024-06-09 06:28

/home/uke/oil/cpp/frontend_pyreadline.h
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// frontend_pyreadline.h
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#ifndef FRONTEND_PYREADLINE_H
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#define FRONTEND_PYREADLINE_H
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#include "mycpp/runtime.h"
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// hacky forward decl
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namespace completion {
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class ReadlineCallback;
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BigStr* ExecuteReadlineCallback(ReadlineCallback*, BigStr*, int);
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}  // namespace completion
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// hacky forward decl
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namespace comp_ui {
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class _IDisplay;
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void ExecutePrintCandidates(_IDisplay*, BigStr*, List<BigStr*>*, int);
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}  // namespace comp_ui
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namespace py_readline {
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class Readline {
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 public:
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  Readline();
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  BigStr* prompt_input(BigStr* prompt);
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  void parse_and_bind(BigStr* s);
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  void add_history(BigStr* line);
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  void read_history_file(BigStr* path);
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  void write_history_file(BigStr* path);
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  void set_completer(completion::ReadlineCallback* completer);
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  void set_completer_delims(BigStr* delims);
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  void set_completion_display_matches_hook(
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      comp_ui::_IDisplay* display = nullptr);
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  BigStr* get_line_buffer();
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  int get_begidx();
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  int get_endidx();
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  void clear_history();
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  BigStr* get_history_item(int pos);
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  void remove_history_item(int pos);
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  int get_current_history_length();
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  void resize_terminal();
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  static constexpr uint32_t field_mask() {
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    return maskbit(offsetof(Readline, completer_delims_)) |
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           maskbit(offsetof(Readline, completer_)) |
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           maskbit(offsetof(Readline, display_));
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  }
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  static constexpr ObjHeader obj_header() {
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    return ObjHeader::ClassFixed(field_mask(), sizeof(Readline));
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  }
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  int begidx_;
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  int endidx_;
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  BigStr* completer_delims_;
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  completion::ReadlineCallback* completer_;
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  comp_ui::_IDisplay* display_;
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  // readline will set this to NULL when EOF is received, else this will point
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  // to a line of input.
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  char* latest_line_;
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  // readline will set this flag when either:
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  //   - it receives EOF
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  //   - it has a complete line of input (it has seen "\n")
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  bool ready_;
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};
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Readline* MaybeGetReadline();
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}  // namespace py_readline
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#endif  // FRONTEND_PYREADLINE_H