feat: add vhdl support (#2504)

* feat: add vhdl support

* fix(vhdl_ls): added windows support

1 files changed, 50 insertions, 0 deletions

diff --git a/lua/lspconfig/server_configurations/vhdl_ls.lua b/lua/lspconfig/server_configurations/vhdl_ls.lua
new file mode 100644
index 00000000..7d04ec5f
--- /dev/null
+++ b/lua/lspconfig/server_configurations/vhdl_ls.lua
@@ -0,0 +1,50 @@
+local util = require 'lspconfig.util'
+
+local root_files = {
+  'vhdl_ls.toml',
+  '.vhdl_ls.toml',
+}
+
+local cmd = { 'vhdl_ls' }
+if vim.fn.has 'win32' == 1 then
+  cmd = { 'cmd.exe', '/C', 'vhdl_ls' }
+end
+
+return {
+  default_config = {
+    cmd = cmd,
+    filetypes = { 'vhd' },
+    root_dir = util.root_pattern(unpack(root_files)),
+    single_file_support = true,
+  },
+  docs = {
+    description = [[
+Install vhdl_ls from https://github.com/VHDL-LS/rust_hdl and add it to path
+
+Configuration
+
+The language server needs to know your library mapping to perform full analysis of the code. For this it uses a configuration file in the TOML format named vhdl_ls.toml.
+
+vhdl_ls will load configuration files in the following order of priority (first to last):
+
+    A file named .vhdl_ls.toml in the user home folder.
+    A file name from the VHDL_LS_CONFIG environment variable.
+    A file named vhdl_ls.toml in the workspace root.
+
+Settings in a later files overwrites those from previously loaded files.
+
+Example vhdl_ls.toml
+```
+# File names are either absolute or relative to the parent folder of the vhdl_ls.toml file
+[libraries]
+lib2.files = [
+  'pkg2.vhd',
+]
+lib1.files = [
+  'pkg1.vhd',
+  'tb_ent.vhd'
+]
+```
+]],
+  },
+}