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, 55 deletions

diff --git a/src/nvim/api/vim.h b/src/nvim/api/vim.h
index 426acf7f50..f15edb8548 100644
--- a/src/nvim/api/vim.h
+++ b/src/nvim/api/vim.h
@@ -6,59 +6,7 @@
 
 #include "nvim/api/private/defs.h"
 
-void vim_push_keys(String str);
-
-void vim_command(String str, Error *err);
-
-Object vim_eval(String str, Error *err);
-
-Integer vim_strwidth(String str, Error *err);
-
-StringArray vim_list_runtime_paths(void);
-
-void vim_change_directory(String dir, Error *err);
-
-String vim_get_current_line(Error *err);
-
-void vim_del_current_line(Error *err);
-
-void vim_set_current_line(String line, Error *err);
-
-Object vim_get_var(String name, Error *err);
-
-Object vim_set_var(String name, Object value, Error *err);
-
-Object vim_get_vvar(String name, Error *err);
-
-Object vim_get_option(String name, Error *err);
-
-void vim_set_option(String name, Object value, Error *err);
-
-void vim_out_write(String str);
-
-void vim_err_write(String str);
-
-BufferArray vim_get_buffers(void);
-
-Buffer vim_get_current_buffer(void);
-
-void vim_set_current_buffer(Buffer buffer, Error *err);
-
-WindowArray vim_get_windows(void);
-
-Window vim_get_current_window(void);
-
-void vim_set_current_window(Window window, Error *err);
-
-TabpageArray vim_get_tabpages(void);
-
-Tabpage vim_get_current_tabpage(void);
-
-void vim_set_current_tabpage(Tabpage tabpage, Error *err);
-
-void vim_subscribe(uint64_t channel_id, String event);
-
-void vim_unsubscribe(uint64_t channel_id, String event);
-
+#ifdef INCLUDE_GENERATED_DECLARATIONS
+# include "api/vim.h.generated.h"
+#endif
 #endif  // NVIM_API_VIM_H
-