patch 9.0.1906: Vim9: Interfaces should not support class methods and variables Commit: https://github.com/vim/vim/commit/92d9ee5f4ca0d2de04c39afbafc7609da43fb2e9 Author: Yegappan Lakshmanan <yegappan@yahoo.com> Date: Sun Sep 17 17:03:19 2023 +0200 patch 9.0.1906: Vim9: Interfaces should not support class methods and variables Problem: Vim9: Interfaces should not support class methods and variables Solution: Make sure interface follow the interface specification Vim9 interface changes to follow the new interface specification: 1) An interface can have only read-only and read-write instance variables. 2) An interface can have only public instance methods. 3) An interface cannot have class variables and class methods. 4) An interface cannot have private instance variables and private instance methods. 5) A interface can extend another interface using "extends". The sub-interface gets all the variables and methods in the super interface. That means: - Interfaces should not support class methods and variables. - Adjust error numbers and add additional tests. - Interface methods can be defined in one of the super classes. - Interface variables can be defined in one of the super classes. and instance variables can be repeated in sub interfaces. - Check the class variable types with the type in interface. closes: #13100 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>

/* ui.c */
void ui_write(char_u *s, int len, int console);
void ui_inchar_undo(char_u *s, int len);
int ui_inchar(char_u *buf, int maxlen, long wtime, int tb_change_cnt);
int inchar_loop(char_u *buf, int maxlen, long wtime, int tb_change_cnt, int (*wait_func)(long wtime, int *interrupted, int ignore_input), int (*resize_func)(int check_only));
int ui_wait_for_chars_or_timer(long wtime, int (*wait_func)(long wtime, int *interrupted, int ignore_input), int *interrupted, int ignore_input);
int ui_char_avail(void);
void ui_delay(long msec_arg, int ignoreinput);
void ui_suspend(void);
void suspend_shell(void);
int ui_get_shellsize(void);
void ui_set_shellsize(int mustset);
void ui_new_shellsize(void);
int ui_get_winpos(int *x, int *y, varnumber_T timeout);
void ui_breakcheck(void);
void ui_breakcheck_force(int force);
int vim_is_input_buf_full(void);
int vim_is_input_buf_empty(void);
int vim_free_in_input_buf(void);
int vim_used_in_input_buf(void);
char_u *get_input_buf(void);
void set_input_buf(char_u *p, int overwrite);
void add_to_input_buf(char_u *s, int len);
void add_to_input_buf_csi(char_u *str, int len);
void trash_input_buf(void);
int read_from_input_buf(char_u *buf, long maxlen);
void fill_input_buf(int exit_on_error);
void read_error_exit(void);
void ui_cursor_shape_forced(int forced);
void ui_cursor_shape(void);
int check_col(int col);
int check_row(int row);
long scroll_line_len(linenr_T lnum);
linenr_T ui_find_longest_lnum(void);
void ui_focus_change(int in_focus);
void im_save_status(long *psave);
/* vim: set ft=c : */