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, 3 insertions, 29 deletions

diff --git a/src/nvim/api/window.h b/src/nvim/api/window.h
index 694558fca8..3a8cde18e2 100644
--- a/src/nvim/api/window.h
+++ b/src/nvim/api/window.h
@@ -6,33 +6,7 @@
 
 #include "nvim/api/private/defs.h"
 
-Buffer window_get_buffer(Window window, Error *err);
-
-Position window_get_cursor(Window window, Error *err);
-
-void window_set_cursor(Window window, Position pos, Error *err);
-
-Integer window_get_height(Window window, Error *err);
-
-void window_set_height(Window window, Integer height, Error *err);
-
-Integer window_get_width(Window window, Error *err);
-
-void window_set_width(Window window, Integer width, Error *err);
-
-Object window_get_var(Window window, String name, Error *err);
-
-Object window_set_var(Window window, String name, Object value, Error *err);
-
-Object window_get_option(Window window, String name, Error *err);
-
-void window_set_option(Window window, String name, Object value, Error *err);
-
-Position window_get_position(Window window, Error *err);
-
-Tabpage window_get_tabpage(Window window, Error *err);
-
-Boolean window_is_valid(Window window);
-
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "api/window.h.generated.h"
+#endif
 #endif  // NVIM_API_WINDOW_H
-