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C# improvements #231

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d585d7f
C# improvements
romamihalich Jan 6, 2026
0e71c27
fix state corruption bug
romamihalich Jan 6, 2026
4133b88
run stylua on file "lua/neogen/configurations/cs.lua"
romamihalich Jan 6, 2026
08df93c
Add enums for C#
romamihalich Jan 26, 2026
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142 changes: 95 additions & 47 deletions lua/neogen/configurations/cs.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,50 @@ local nodes_utils = require("neogen.utilities.nodes")
local template = require("neogen.template")
local i = require("neogen.types.template").item

local is_void = function(return_statement)
if not return_statement then
return
end
for _, value in ipairs(return_statement) do
if value == "void" then
return true
end
end
return false
end

local get_parameters_tree = function()
return {
retrieve = "first",
node_type = "parameter_list",
subtree = {
{
retrieve = "all",
node_type = "parameter",
subtree = {
{ position = -1, extract = true, as = i.Parameter },
},
},
},
}
end

local get_type_parameters_tree = function()
return {
retrieve = "first",
node_type = "type_parameter_list",
subtree = {
{
retrieve = "all",
node_type = "type_parameter",
subtree = {
{ position = 1, extract = true, as = i.Tparam },
},
},
},
}
end

return {
parent = {
func = {
Expand All @@ -12,51 +56,31 @@ return {
"delegate_declaration",
"conversion_operator_declaration",
},
class = { "class_declaration", "interface_declaration" },
type = { "field_declaration", "property_declaration", "event_field_declaration", "indexer_declaration" },
class = { "interface_declaration", "class_declaration", "record_declaration", "struct_declaration", "enum_declaration" },
type = { "field_declaration", "property_declaration", "event_field_declaration", "indexer_declaration", "enum_member_declaration" },
},
data = {
func = {
["method_declaration|constructor_declaration|operator_declaration|delegate_declaration|conversion_operator_declaration"] = {
["0"] = {
extract = function(node)
local tree = {
get_type_parameters_tree(),
get_parameters_tree(),
{
retrieve = "first",
node_type = "parameter_list",
subtree = {
{
retrieve = "all",
node_type = "parameter",
subtree = {
{ position = 2, extract = true, as = i.Parameter },
},
},
},
},
{
retrieve = "first",
node_type = "type_parameter_list",
subtree = {
{
retrieve = "all",
node_type = "type_parameter",
subtree = {
{ position = 1, extract = true, as = i.Tparam },
},
},
},
},
{
position = 1,
retrieve = "all",
extract = true,
as = i.Return,
},
}
local nodes = nodes_utils:matching_nodes_from(node, tree)
local res = extractors:extract_from_matched(nodes)
if res.return_statement[1] == "void" then

local has_no_return = node:type() == "constructor_declaration" or is_void(res.return_statement)
if has_no_return then
res.return_statement = nil
else
res.return_statement = { res.return_statement[1] }
end
res.identifier = res["_"]
return res
Expand All @@ -65,23 +89,11 @@ return {
},
},
class = {
["class_declaration|interface_declaration"] = {
["interface_declaration"] = {
["0"] = {
extract = function(node)
local tree = {
{
retrieve = "first",
node_type = "type_parameter_list",
subtree = {
{
retrieve = "all",
node_type = "type_parameter",
subtree = {
{ position = 1, extract = true, as = i.Tparam },
},
},
},
},
get_type_parameters_tree(),
}
local nodes = nodes_utils:matching_nodes_from(node, tree)
local res = extractors:extract_from_matched(nodes)
Expand All @@ -90,9 +102,30 @@ return {
end,
},
},
["class_declaration|record_declaration|struct_declaration"] = {
["0"] = {
extract = function(node)
local tree = {
get_type_parameters_tree(),
get_parameters_tree(),
}
local nodes = nodes_utils:matching_nodes_from(node, tree)
local res = extractors:extract_from_matched(nodes)
res.identifier = res["_"]
return res
end,
},
},
["enum_declaration"] = {
["0"] = {
extract = function()
return {}
end,
}
},
},
type = {
["field_declaration|property_declaration|event_field_declaration"] = {
["field_declaration|property_declaration|event_field_declaration|enum_member_declaration"] = {
["0"] = {
extract = function()
return {}
Expand Down Expand Up @@ -127,16 +160,31 @@ return {
subtree = {
{
retrieve = "all",
node_type = "return_statement",
node_type = "accessor_declaration",
as = i.Return,
recursive = true,
extract = true,
},
},
},
}
local nodes = nodes_utils:matching_nodes_from(node, tree)
local res = extractors:extract_from_matched(nodes)

local has_getter = false
if res.return_statement then
for _, value in ipairs(res.return_statement) do
if vim.startswith(value, "get") then
has_getter = true
break
end
end
end
if has_getter then
res.return_statement = { "get" }
else
res.return_statement = nil
end

return res
end,
},
Expand Down
2 changes: 1 addition & 1 deletion lua/neogen/templates/xmldoc.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -8,7 +8,7 @@ return {
{ nil, "/// <summary>", {} },
{ nil, "/// $1", {} },
{ nil, "/// </summary>", {} },
{ i.Parameter, '/// <param name="%s">$1</param>', { type = { "func", "type" } } },
{ i.Tparam, '/// <typeparam name="%s">$1</typeparam>', { type = { "func", "class" } } },
{ i.Parameter, '/// <param name="%s">$1</param>', { type = { "func", "type", "class" } } },
{ i.Return, "/// <returns>$1</returns>", { type = { "func", "type" } } },
}
8 changes: 6 additions & 2 deletions lua/neogen/utilities/nodes.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -56,7 +56,7 @@ return {
--- @param parent TSNode the parent node
--- @param tree table a nested table : { retrieve = "all|first", node_type = node_name, subtree = tree, recursive = true }
--- If you want to extract the node, do not specify the subtree and instead: extract = true
--- Optional: you can specify position = number instead of retrieve, and it will fetch the child node at position number
--- Optional: you can specify position = number instead of retrieve, and it will fetch the child node at position number, if position == -1, then last child is taken
--- @param result? table the table of results
--- @return table result a table of k,v where k are node_types and v all matched nodes
matching_nodes_from = function(self, parent, tree, result)
Expand All @@ -74,7 +74,11 @@ return {
-- Only keep the node with custom position
if not subtree.retrieve then
assert(type(subtree.position) == "number", "please require position if retrieve is nil")
matched = { matched[subtree.position] }
local position = subtree.position
if position == -1 then
position = #matched
end
matched = { matched[position] }
end

if subtree.recursive then
Expand Down