refactor(api): remove unneccesary indirection around handles

These things are just maps to pointers, no need to perform
a huge song and dance around it.

src/nvim/api/private/handle.c

@@ -1,40 +0,0 @@
-// This is an open source non-commercial project. Dear PVS-Studio, please check
-// it. PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com
-
-#include <assert.h>
-#include <stdint.h>
-
-#include "nvim/vim.h"
-#include "nvim/map.h"
-#include "nvim/api/private/handle.h"
-
-#define HANDLE_INIT(name) name##_handles = pmap_new(handle_T)()
-
-#define HANDLE_IMPL(type, name) \
-  static PMap(handle_T) *name##_handles = NULL; /* NOLINT */ \
-  \
-  type *handle_get_##name(handle_T handle) \
-  { \
-    return pmap_get(handle_T)(name##_handles, handle); \
-  } \
-  \
-  void handle_register_##name(type *name) \
-  { \
-    pmap_put(handle_T)(name##_handles, name->handle, name); \
-  } \
-  \
-  void handle_unregister_##name(type *name) \
-  { \
-    pmap_del(handle_T)(name##_handles, name->handle); \
-  }
-
-HANDLE_IMPL(buf_T, buffer)
-HANDLE_IMPL(win_T, window)
-HANDLE_IMPL(tabpage_T, tabpage)
-
-void handle_init(void)
-{
-  HANDLE_INIT(buffer);
-  HANDLE_INIT(window);
-  HANDLE_INIT(tabpage);
-}

src/nvim/api/private/handle.h

@@ -1,24 +0,0 @@
-#ifndef NVIM_API_PRIVATE_HANDLE_H
-#define NVIM_API_PRIVATE_HANDLE_H
-
-#include "nvim/vim.h"
-#include "nvim/buffer_defs.h"
-#include "nvim/api/private/defs.h"
-
-#define HANDLE_DECLS(type, name) \
-  type *handle_get_##name(handle_T handle); \
-  void handle_register_##name(type *name); \
-  void handle_unregister_##name(type *name);
-
-// handle_get_buffer handle_register_buffer, handle_unregister_buffer
-HANDLE_DECLS(buf_T, buffer)
-// handle_get_window handle_register_window, handle_unregister_window
-HANDLE_DECLS(win_T, window)
-// handle_get_tabpage handle_register_tabpage, handle_unregister_tabpage
-HANDLE_DECLS(tabpage_T, tabpage)
-
-void handle_init(void);
-
-
-#endif  // NVIM_API_PRIVATE_HANDLE_H
-

src/nvim/api/private/helpers.c

@@ -9,7 +9,6 @@
 
 #include "nvim/api/private/helpers.h"
 #include "nvim/api/private/defs.h"
-#include "nvim/api/private/handle.h"
 #include "nvim/api/vim.h"
 #include "nvim/msgpack_rpc/helpers.h"
 #include "nvim/lua/executor.h"

src/nvim/api/private/helpers.h

@@ -101,6 +101,14 @@
 #define api_free_window(value)
 #define api_free_tabpage(value)
 
+EXTERN PMap(handle_T) buffer_handles INIT(= MAP_INIT);
+EXTERN PMap(handle_T) window_handles INIT(= MAP_INIT);
+EXTERN PMap(handle_T) tabpage_handles INIT(= MAP_INIT);
+
+#define handle_get_buffer(h) pmap_get(handle_T)(&buffer_handles, (h))
+#define handle_get_window(h) pmap_get(handle_T)(&window_handles, (h))
+#define handle_get_tabpage(h) pmap_get(handle_T)(&tabpage_handles, (h))
+
 /// Structure used for saving state for :try
 ///
 /// Used when caller is supposed to be operating when other VimL code is being

src/nvim/autocmd.c

@@ -5,7 +5,7 @@
 
 #include "nvim/autocmd.h"
 
-#include "nvim/api/private/handle.h"
+#include "nvim/api/private/helpers.h"
 #include "nvim/ascii.h"
 #include "nvim/buffer.h"
 #include "nvim/charset.h"
@@ -1150,7 +1150,7 @@ void aucmd_prepbuf(aco_save_T *aco, buf_T *buf)
     block_autocmds();  // We don't want BufEnter/WinEnter autocommands.
     if (need_append) {
       win_append(lastwin, aucmd_win);
-      handle_register_window(aucmd_win);
+      pmap_put(handle_T)(&window_handles, aucmd_win->handle, aucmd_win);
       win_config_float(aucmd_win, aucmd_win->w_float_config);
     }
     // Prevent chdir() call in win_enter_ext(), through do_autochdir()
@@ -1191,7 +1191,7 @@ void aucmd_restbuf(aco_save_T *aco)
   win_found:
 
     win_remove(curwin, NULL);
-    handle_unregister_window(curwin);
+    pmap_del(handle_T)(&window_handles, curwin->handle);
     if (curwin->w_grid_alloc.chars != NULL) {
       ui_comp_remove_grid(&curwin->w_grid_alloc);
       ui_call_win_hide(curwin->w_grid_alloc.handle);

src/nvim/buffer.c

@@ -24,7 +24,6 @@
 #include <inttypes.h>
 #include <assert.h>
 
-#include "nvim/api/private/handle.h"
 #include "nvim/api/private/helpers.h"
 #include "nvim/api/vim.h"
 #include "nvim/ascii.h"
@@ -757,7 +756,7 @@ void buf_freeall(buf_T *buf, int flags)
  */
 static void free_buffer(buf_T *buf)
 {
-  handle_unregister_buffer(buf);
+  pmap_del(handle_T)(&buffer_handles, buf->b_fnum);
   buf_free_count++;
   // b:changedtick uses an item in buf_T.
   free_buffer_stuff(buf, kBffClearWinInfo);
@@ -1841,7 +1840,7 @@ buf_T *buflist_new(char_u *ffname_arg, char_u *sfname_arg, linenr_T lnum,
     lastbuf = buf;
 
     buf->b_fnum = top_file_num++;
-    handle_register_buffer(buf);
+    pmap_put(handle_T)(&buffer_handles, buf->b_fnum, buf);
     if (top_file_num < 0) {  // wrap around (may cause duplicates)
       EMSG(_("W14: Warning: List of file names overflow"));
       if (emsg_silent == 0) {

src/nvim/fileio.c

@@ -11,7 +11,7 @@
 #include <fcntl.h>
 
 #include "nvim/vim.h"
-#include "nvim/api/private/handle.h"
+#include "nvim/api/private/helpers.h"
 #include "nvim/ascii.h"
 #include "nvim/fileio.h"
 #include "nvim/buffer.h"

src/nvim/getchar.c

@@ -52,7 +52,6 @@
 #include "nvim/os/input.h"
 #include "nvim/os/os.h"
 #include "nvim/os/fileio.h"
-#include "nvim/api/private/handle.h"
 
 
 /// Index in scriptin

src/nvim/lua/executor.c

@@ -13,7 +13,6 @@
 #include "nvim/func_attr.h"
 #include "nvim/api/private/defs.h"
 #include "nvim/api/private/helpers.h"
-#include "nvim/api/private/handle.h"
 #include "nvim/api/vim.h"
 #include "nvim/msgpack_rpc/channel.h"
 #include "nvim/vim.h"

src/nvim/lua/treesitter.c

@@ -18,7 +18,7 @@
 #include "tree_sitter/api.h"
 
 #include "nvim/lua/treesitter.h"
-#include "nvim/api/private/handle.h"
+#include "nvim/api/private/helpers.h"
 #include "nvim/memline.h"
 #include "nvim/buffer.h"
 

src/nvim/main.c

@@ -78,7 +78,6 @@
 #include "nvim/api/ui.h"
 #include "nvim/api/private/defs.h"
 #include "nvim/api/private/helpers.h"
-#include "nvim/api/private/handle.h"
 #include "nvim/api/private/dispatch.h"
 #ifndef WIN32
 # include "nvim/os/pty_process_unix.h"
@@ -158,7 +157,6 @@ void early_init(mparm_T *paramp)
 {
   env_init();
   fs_init();
-  handle_init();
   eval_init();          // init global variables
   init_path(argv0 ? argv0 : "nvim");
   init_normal_cmds();   // Init the table of Normal mode commands.

src/nvim/os_unix.c

@@ -7,7 +7,6 @@
 #include <stdbool.h>
 #include <string.h>
 
-#include "nvim/api/private/handle.h"
 #include "nvim/vim.h"
 #include "nvim/ascii.h"
 #include "nvim/os_unix.h"

src/nvim/terminal.c

@@ -76,7 +76,6 @@
 #include "nvim/event/time.h"
 #include "nvim/os/input.h"
 #include "nvim/api/private/helpers.h"
-#include "nvim/api/private/handle.h"
 
 typedef struct terminal_state {
   VimState state;

src/nvim/window.c

@@ -5,7 +5,6 @@
 #include <inttypes.h>
 #include <stdbool.h>
 
-#include "nvim/api/private/handle.h"
 #include "nvim/api/private/helpers.h"
 #include "nvim/vim.h"
 #include "nvim/ascii.h"
@@ -3601,7 +3600,7 @@ static tabpage_T *alloc_tabpage(void)
   static int last_tp_handle = 0;
   tabpage_T *tp = xcalloc(1, sizeof(tabpage_T));
   tp->handle = ++last_tp_handle;
-  handle_register_tabpage(tp);
+  pmap_put(handle_T)(&tabpage_handles, tp->handle, tp);
 
   // Init t: variables.
   tp->tp_vars = tv_dict_alloc();
@@ -3616,7 +3615,7 @@ void free_tabpage(tabpage_T *tp)
 {
   int idx;
 
-  handle_unregister_tabpage(tp);
+  pmap_del(handle_T)(&tabpage_handles, tp->handle);
   diff_clear(tp);
   for (idx = 0; idx < SNAP_COUNT; ++idx)
     clear_snapshot(tp, idx);
@@ -4545,7 +4544,7 @@ static win_T *win_alloc(win_T *after, bool hidden)
   win_T *new_wp = xcalloc(1, sizeof(win_T));
 
   new_wp->handle = ++last_win_id;
-  handle_register_window(new_wp);
+  pmap_put(handle_T)(&window_handles, new_wp->handle, new_wp);
 
   grid_assign_handle(&new_wp->w_grid_alloc);
 
@@ -4616,7 +4615,7 @@ win_free (
   int i;
   wininfo_T   *wip;
 
-  handle_unregister_window(wp);
+  pmap_del(handle_T)(&window_handles, wp->handle);
   clearFolding(wp);
 
   /* reduce the reference count to the argument list. */