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, 14 deletions

diff --git a/src/nvim/file_search.c b/src/nvim/file_search.c
index 0ff02b85bf..4e2a9cb5d9 100644
--- a/src/nvim/file_search.c
+++ b/src/nvim/file_search.c
@@ -185,20 +185,10 @@ typedef struct ff_search_ctx_T {
 } ff_search_ctx_T;
 
 /* locally needed functions */
-static int ff_check_visited(ff_visited_T **, char_u *, char_u *);
-static void vim_findfile_free_visited_list
-    (ff_visited_list_hdr_T **list_headp);
-static void ff_free_visited_list(ff_visited_T *vl);
-static ff_visited_list_hdr_T* ff_get_visited_list
-    (char_u *, ff_visited_list_hdr_T **list_headp);
-static int ff_wc_equal(char_u *s1, char_u *s2);
-
-static void ff_push(ff_search_ctx_T *search_ctx, ff_stack_T *stack_ptr);
-static ff_stack_T *ff_pop(ff_search_ctx_T *search_ctx);
-static void ff_clear(ff_search_ctx_T *search_ctx);
-static void ff_free_stack_element(ff_stack_T *stack_ptr);
-static ff_stack_T *ff_create_stack_element(char_u *, char_u *, int, int);
-static int ff_path_in_stoplist(char_u *, int, char_u **);
+
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "file_search.c.generated.h"
+#endif
 
 static char_u e_pathtoolong[] = N_("E854: path too long for completion");