gopher.nvim/lua/gopher/gen_constructor.lua
2024-04-19 23:22:07 -04:00

60 lines
1.8 KiB
Lua

local u = require "gopher._utils"
local ts_utils = require "gopher._utils.ts.init"
return function(_)
-- TODO: allow to pass a funcName as an argument
local row, col = unpack(vim.api.nvim_win_get_cursor(0))
local ns = ts_utils.get_struct_node_at_pos(row + 1, col + 1)
if not ns then
u.notify("not node found at cursor position", "error")
return
end
local parameter_identifiers = {}
if ns.struct_properties.parameters_node then
for i in ns.struct_properties.parameters_node:iter_children() do
if i:type() == "type_parameter_declaration" then
for j in i:iter_children() do
if j:type() == "identifier" then
table.insert(parameter_identifiers, vim.treesitter.get_node_text(j, 1))
end
end
end
end
end
local args = {}
local fields = {}
for i in ns.struct_properties.fields_node:iter_children() do
if i:type() == "field_declaration" then
table.insert(args, vim.treesitter.get_node_text(i, 1))
for j in i:iter_children() do
if j:type() == "field_identifier" then
local field_name = vim.treesitter.get_node_text(j, 1)
table.insert(fields, field_name .. ": " .. field_name)
end
end
end
end
local struct_type = ns.name
local parameters_section = ""
if #parameter_identifiers > 0 then
struct_type = struct_type .. "[" .. table.concat(parameter_identifiers, ", ") .. "]"
parameters_section = vim.treesitter.get_node_text(ns.struct_properties.parameters_node, 1)
end
local constructor_code = string.format(
"\nfunc New%s%s(%s) *%s {\n\treturn &%s{%s}\n}\n",
ns.name:gsub("^%l", string.upper),
parameters_section,
table.concat(args, ", "),
struct_type,
struct_type,
table.concat(fields, ", ")
)
vim.fn.append(ns.declaring_node:end_() + 1, vim.split(constructor_code, "\n"))
end