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, 20 deletions

diff --git a/src/nvim/file_search.h b/src/nvim/file_search.h
index 5957fd1f9f..0b0b03c56a 100644
--- a/src/nvim/file_search.h
+++ b/src/nvim/file_search.h
@@ -1,23 +1,7 @@
 #ifndef NVIM_FILE_SEARCH_H
 #define NVIM_FILE_SEARCH_H
 
-void *vim_findfile_init(char_u *path, char_u *filename, char_u *
-                                stopdirs, int level, int free_visited,
-                                int find_what, void *search_ctx_arg,
-                                int tagfile,
-                                char_u *rel_fname);
-char_u *vim_findfile_stopdir(char_u *buf);
-void vim_findfile_cleanup(void *ctx);
-char_u *vim_findfile(void *search_ctx_arg);
-void vim_findfile_free_visited(void *search_ctx_arg);
-char_u *find_file_in_path(char_u *ptr, int len, int options, int first,
-                                  char_u *rel_fname);
-void free_findfile(void);
-char_u *find_directory_in_path(char_u *ptr, int len, int options,
-                                       char_u *rel_fname);
-char_u *find_file_in_path_option(char_u *ptr, int len, int options,
-                                         int first, char_u *path_option,
-                                         int find_what, char_u *rel_fname,
-                                         char_u *suffixes);
-
-#endif /* NVIM_FILE_SEARCH_H */
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "file_search.h.generated.h"
+#endif
+#endif  // NVIM_FILE_SEARCH_H