1 files changed, 42 insertions, 0 deletions
diff --git a/src/gen/gen_events.lua b/src/gen/gen_events.lua
new file mode 100644
index 0000000000..77f766bb28
--- /dev/null
+++ b/src/gen/gen_events.lua
@@ -0,0 +1,42 @@
+local fileio_enum_file = arg[1]
+local names_file = arg[2]
+
+local auevents = require('nvim.auevents')
+local events = auevents.events
+
+local enum_tgt = io.open(fileio_enum_file, 'w')
+local names_tgt = io.open(names_file, 'w')
+
+enum_tgt:write([[
+// IWYU pragma: private, include "nvim/autocmd_defs.h"
+
+typedef enum auto_event {]])
+names_tgt:write([[
+static const struct event_name {
+  size_t len;
+  char *name;
+  int event;
+} event_names[] = {]])
+
+local aliases = 0
+for i, event in ipairs(events) do
+  enum_tgt:write(('\n  EVENT_%s = %u,'):format(event[1]:upper(), i + aliases - 1))
+  -- Events with positive keys aren't allowed in 'eventignorewin'.
+  local event_int = ('%sEVENT_%s'):format(event[3] and '-' or '', event[1]:upper())
+  names_tgt:write(('\n  {%u, "%s", %s},'):format(#event[1], event[1], event_int))
+  for _, alias in ipairs(event[2]) do
+    aliases = aliases + 1
+    names_tgt:write(('\n  {%u, "%s", %s},'):format(#alias, alias, event_int))
+    enum_tgt:write(('\n  EVENT_%s = %u,'):format(alias:upper(), i + aliases - 1))
+  end
+  if i == #events then -- Last item.
+    enum_tgt:write(('\n  NUM_EVENTS = %u,'):format(i + aliases))
+  end
+end
+
+names_tgt:write('\n  {0, NULL, (event_T)0},\n};\n')
+names_tgt:write('\nstatic AutoCmdVec autocmds[NUM_EVENTS] = { 0 };\n')
+names_tgt:close()
+
+enum_tgt:write('\n} event_T;\n')
+enum_tgt:close()