From 89f459fc2e4653683b18388c21b74af89f2219ae Mon Sep 17 00:00:00 2001
From: Folke Lemaitre <folke.lemaitre@gmail.com>
Date: Thu, 8 Sep 2022 13:12:24 +0200
Subject: [PATCH] feat: simple method to generate a json schema based on a lua
 table

---
 lua/lsp-settings/schema.lua | 40 +++++++++++++++++++++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 lua/lsp-settings/schema.lua

diff --git a/lua/lsp-settings/schema.lua b/lua/lsp-settings/schema.lua
new file mode 100644
index 0000000..f44b4e7
--- /dev/null
+++ b/lua/lsp-settings/schema.lua
@@ -0,0 +1,40 @@
+local M = {}
+
+-- try to create a simple schema from a given value
+function M.to_schema(value)
+  if value == nil then
+    return { type = "null" }
+  elseif type(value) == "boolean" then
+    return { type = "boolean", default = value, description = "boolean" }
+  elseif type(value) == "string" then
+    return { type = "string", default = value, description = "string" }
+  elseif type(value) == "number" then
+    return { type = "number", default = value, description = "number" }
+  end
+
+  if vim.tbl_islist(value) then
+    return { type = "array", default = value, description = "array" }
+  end
+
+  if type(value) == "table" then
+    local obj = { type = "object", properties = {} }
+    for k, v in pairs(value) do
+      obj.properties[k] = M.to_schema(v)
+    end
+    return obj
+  end
+  return { type = "null" }
+end
+
+function M.plugin_schema(name, obj, description)
+  local schema = M.to_schema(obj)
+  schema.description = description
+  return {
+    type = "object",
+    properties = {
+      [name] = schema,
+    },
+  }
+end
+
+return M