Add automatic generation of headers

- The 'stripdecls.py' script replaces declarations in all headers by includes to
  generated headers.
  `ag '#\s*if(?!ndef NEOVIM_).*((?!#\s*endif).*\n)*#ifdef INCLUDE_GENERATED'`
  was used for this.
- Add and integrate gendeclarations.lua into the build system to generate the
  required includes.
- Add -Wno-unused-function
- Made a bunch of old-style definitions ANSI

This adds a requirement: all type and structure definitions must be present
before INCLUDE_GENERATED_DECLARATIONS-protected include.

Warning: mch_expandpath (path.h.generated.h) was moved manually. So far it is
the only exception.

1 files changed, 4 insertions, 74 deletions

diff --git a/src/nvim/getchar.h b/src/nvim/getchar.h
index c34efc8d0c..802201c4e1 100644
--- a/src/nvim/getchar.h
+++ b/src/nvim/getchar.h
@@ -1,77 +1,7 @@
 #ifndef NVIM_GETCHAR_H
 #define NVIM_GETCHAR_H
-/* getchar.c */
-void free_buff(buffheader_T *buf);
-char_u *get_recorded(void);
-char_u *get_inserted(void);
-int stuff_empty(void);
-int readbuf1_empty(void);
-void typeahead_noflush(int c);
-void flush_buffers(int flush_typeahead);
-void ResetRedobuff(void);
-void CancelRedo(void);
-void saveRedobuff(void);
-void restoreRedobuff(void);
-void AppendToRedobuff(char_u *s);
-void AppendToRedobuffLit(char_u *str, int len);
-void AppendCharToRedobuff(int c);
-void AppendNumberToRedobuff(long n);
-void stuffReadbuff(char_u *s);
-void stuffReadbuffLen(char_u *s, long len);
-void stuffReadbuffSpec(char_u *s);
-void stuffcharReadbuff(int c);
-void stuffnumReadbuff(long n);
-int start_redo(long count, int old_redo);
-int start_redo_ins(void);
-void stop_redo_ins(void);
-int ins_typebuf(char_u *str, int noremap, int offset, int nottyped,
-                int silent);
-void ins_char_typebuf(int c);
-int typebuf_changed(int tb_change_cnt);
-int typebuf_typed(void);
-int typebuf_maplen(void);
-void del_typebuf(int len, int offset);
-void alloc_typebuf(void);
-void free_typebuf(void);
-void save_typebuf(void);
-void save_typeahead(tasave_T *tp);
-void restore_typeahead(tasave_T *tp);
-void openscript(char_u *name, int directly);
-void close_all_scripts(void);
-int using_script(void);
-void before_blocking(void);
-void updatescript(int c);
-int vgetc(void);
-int safe_vgetc(void);
-int plain_vgetc(void);
-int vpeekc(void);
-int vpeekc_nomap(void);
-int vpeekc_any(void);
-int char_avail(void);
-void vungetc(int c);
-int inchar(char_u *buf, int maxlen, long wait_time, int tb_change_cnt);
-int fix_input_buffer(char_u *buf, int len, int script);
-int input_available(void);
-int do_map(int maptype, char_u *arg, int mode, int abbrev);
-int get_map_mode(char_u **cmdp, int forceit);
-void map_clear(char_u *cmdp, char_u *arg, int forceit, int abbr);
-void map_clear_int(buf_T *buf, int mode, int local, int abbr);
-char_u *map_mode_to_chars(int mode);
-int map_to_exists(char_u *str, char_u *modechars, int abbr);
-int map_to_exists_mode(char_u *rhs, int mode, int abbr);
-char_u *set_context_in_map_cmd(expand_T *xp, char_u *cmd, char_u *arg,
-                               int forceit, int isabbrev, int isunmap,
-                               cmdidx_T cmdidx);
-int ExpandMappings(regmatch_T *regmatch, int *num_file, char_u ***file);
-int check_abbr(int c, char_u *ptr, int col, int mincol);
-char_u *vim_strsave_escape_csi(char_u *p);
-void vim_unescape_csi(char_u *p);
-int makemap(FILE *fd, buf_T *buf);
-int put_escstr(FILE *fd, char_u *strstart, int what);
-void check_map_keycodes(void);
-char_u *check_map(char_u *keys, int mode, int exact, int ign_mod,
-                  int abbr, mapblock_T **mp_ptr,
-                  int *local_ptr);
-void add_map(char_u *map, int mode);
 
-#endif /* NVIM_GETCHAR_H */
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "getchar.h.generated.h"
+#endif
+#endif  // NVIM_GETCHAR_H