Improve Godoc support (#75)

* Improve Godoc support

Godoc recommends, as per https://go.dev/blog/godoc , that documentation
comments start with the name of the thing being documented.

This adds that, as well as better support for structs and interfaces.

* ref(go) Use `as` keyword in configuration trees

* chore: Bump neogen version

Co-authored-by: danymat <d.danymat@gmail.com>

lua/neogen/configurations/go.lua

@@ -1,17 +1,46 @@
 local template = require("neogen.template")
+local extractors = require("neogen.utilities.extractors")
+local nodes_utils = require("neogen.utilities.nodes")
 
 return {
     parent = {
-        func = { "function_declaration" },
-        type = { "package_clause", "const_declaration", "var_declaration" },
+        func = { "function_declaration", "method_declaration" },
+        type = { "package_clause", "const_declaration", "var_declaration", "type_declaration" },
     },
 
     data = {
         func = {
             ["function_declaration"] = {
                 ["0"] = {
-                    extract = function()
-                        return {}
+                    extract = function(node)
+                        local tree = {
+                            {
+                                retrieve = "first",
+                                node_type = "identifier",
+                                extract = "true",
+                                as = "func_name",
+                            },
+                        }
+                        local nodes = nodes_utils:matching_nodes_from(node, tree)
+                        local res = extractors:extract_from_matched(nodes)
+                        return res
+                    end,
+                },
+            },
+            ["method_declaration"] = {
+                ["0"] = {
+                    extract = function(node)
+                        local tree = {
+                            {
+                                retrieve = "first",
+                                node_type = "field_identifier",
+                                extract = "true",
+                                as = "func_name",
+                            },
+                        }
+                        local nodes = nodes_utils:matching_nodes_from(node, tree)
+                        local res = extractors:extract_from_matched(nodes)
+                        return res
                     end,
                 },
             },
@@ -24,6 +53,29 @@ return {
                     end,
                 },
             },
+            ["type_declaration"] = {
+                ["0"] = {
+                    extract = function(node)
+                        local tree = {
+                            {
+                                retrieve = "all",
+                                node_type = "type_spec",
+                                subtree = {
+                                    {
+                                        retrieve = "first",
+                                        node_type = "type_identifier",
+                                        extract = true,
+                                        as = "type_name",
+                                    },
+                                },
+                            },
+                        }
+                        local nodes = nodes_utils:matching_nodes_from(node, tree)
+                        local res = extractors:extract_from_matched(nodes)
+                        return res
+                    end,
+                },
+            },
         },
     },
 

lua/neogen/init.lua

@@ -216,6 +216,8 @@ end
 ---
 --- Note: We will only document `major` and `minor` versions, not `patch` ones.
 ---
+--- ## 2.4.0~
+---   - Improve godoc template (#75)
 --- ## 2.3.0~
 ---   - Added bundled support with snippet engines !
 ---     Check out |snippet-integration| for basic setup
@@ -234,7 +236,7 @@ end
 ---     with multiple annotation conventions.
 ---@tag neogen-changelog
 ---@toc_entry Changes in neogen plugin
-neogen.version = "2.3.0"
+neogen.version = "2.4.0"
 --minidoc_afterlines_end
 
 return neogen

lua/neogen/templates/godoc.lua

@@ -1,3 +1,5 @@
 return {
     { nil, " $1", { no_results = true } },
+    { "func_name", " %s $1", { type = { "func" }}},
+    { "type_name", " %s $1", { type = { "type" }}},
 }