1 files changed, 64 insertions, 0 deletions
diff --git a/src/nvim/map_value_impl.c.h b/src/nvim/map_value_impl.c.h
new file mode 100644
index 0000000000..d93856c25d
--- /dev/null
+++ b/src/nvim/map_value_impl.c.h
@@ -0,0 +1,64 @@
+#include "nvim/assert_defs.h"
+#include "nvim/map_defs.h"
+
+#if !defined(KEY_NAME) || !defined(VAL_NAME)
+// Don't error out. it is nice to type-check the file in isolation, in clangd or otherwise
+# define KEY_NAME(x) x##int
+# define VAL_NAME(x) quasiquote(x, ptr_t)
+#endif
+
+#define MAP_NAME(x) VAL_NAME(KEY_NAME(x))
+#define MAP_TYPE MAP_NAME(Map_)
+#define KEY_TYPE KEY_NAME()
+#define VALUE_TYPE VAL_NAME()
+#define INITIALIZER VAL_NAME(value_init_)
+
+VALUE_TYPE *MAP_NAME(map_ref_)(MAP_TYPE *map, KEY_TYPE key, KEY_TYPE **key_alloc)
+{
+  uint32_t k = KEY_NAME(mh_get_)(&map->set, key);
+  if (k == MH_TOMBSTONE) {
+    return NULL;
+  }
+  if (key_alloc) {
+    *key_alloc = &map->set.keys[k];
+  }
+  return &map->values[k];
+}
+
+VALUE_TYPE *MAP_NAME(map_put_ref_)(MAP_TYPE *map, KEY_TYPE key, KEY_TYPE **key_alloc,
+                                   bool *new_item)
+{
+  MHPutStatus status;
+  uint32_t k = KEY_NAME(mh_put_)(&map->set, key, &status);
+  if (status != kMHExisting) {
+    if (status == kMHNewKeyRealloc) {
+      map->values = xrealloc(map->values, map->set.h.keys_capacity * sizeof(VALUE_TYPE));
+    }
+    map->values[k] = INITIALIZER;
+  }
+  if (new_item) {
+    *new_item = (status != kMHExisting);
+  }
+  if (key_alloc) {
+    *key_alloc = &map->set.keys[k];
+  }
+  return &map->values[k];
+}
+
+VALUE_TYPE MAP_NAME(map_del_)(MAP_TYPE *map, KEY_TYPE key, KEY_TYPE *key_alloc)
+{
+  VALUE_TYPE rv = INITIALIZER;
+  uint32_t k = KEY_NAME(mh_delete_)(&map->set, &key);
+  if (k == MH_TOMBSTONE) {
+    return rv;
+  }
+
+  if (key_alloc) {
+    *key_alloc = key;
+  }
+  rv = map->values[k];
+  if (k != map->set.h.n_keys) {
+    map->values[k] = map->values[map->set.h.n_keys];
+  }
+  return rv;
+}