(c) Add support for functions that return pointers

lua/neogen/configurations/c.lua

@@ -1,10 +1,4 @@
-local c_function_extractor = function(node)
+local c_params = {
-    local tree = {
-        {
-            retrieve = "first",
-            node_type = "function_declarator",
-            subtree = {
-                {
     retrieve = "first",
     node_type = "parameter_list",
     subtree = {
@@ -16,8 +10,20 @@ local c_function_extractor = function(node)
             },
         },
     },
+}
+local c_function_extractor = function(node)
+    local tree = {
+        {
+            retrieve = "first",
+            node_type = "function_declarator",
+            subtree = {
+                c_params,
             },
         },
+        {
+            retrieve = "first_recursive",
+            node_type = "function_declarator",
+            extract = true
         },
         {
             retrieve = "first",
@@ -26,11 +32,19 @@ local c_function_extractor = function(node)
                 { retrieve = "first", node_type = "return_statement", extract = true },
             },
         },
+        c_params
     }
 
     local nodes = neogen.utilities.nodes:matching_nodes_from(node, tree)
     local res = neogen.utilities.extractors:extract_from_matched(nodes)
 
+
+    if nodes.function_declarator then
+        local subnodes = neogen.utilities.nodes:matching_nodes_from(nodes.function_declarator[1], tree)
+        local subres = neogen.utilities.extractors:extract_from_matched(subnodes)
+        res = vim.tbl_deep_extend("keep", res, subres)
+    end
+
     return {
         parameters = res.identifier,
         return_statement = res.return_statement,