diff --git a/set_paths.tl b/set_paths.tl
index 5473872..0899575 100644
--- a/set_paths.tl
+++ b/set_paths.tl
@@ -10,7 +10,7 @@ end
 
 package.path = lua_module_paths("lua_modules/share/lua/" .. version)
    .. lua_module_paths "types"
-   .. lua_module_paths "build/awesomewm.d.tl"
+   .. lua_module_paths "src/awesomewm.d.tl"
    .. package.path
 
 package.cpath = "lua_modules/lib/lua/" .. version .. "/?.so;" .. package.cpath
diff --git a/src/awesomewm.d.tl/entities/Function_Info.tl b/src/awesomewm.d.tl/entities/Function_Info.tl
index 5f0b802..4b9c1e1 100644
--- a/src/awesomewm.d.tl/entities/Function_Info.tl
+++ b/src/awesomewm.d.tl/entities/Function_Info.tl
@@ -1,14 +1,13 @@
 local List = require "pl.List"
 
-local record Parameter
-   name: string
-   type: string
-end
-
 local record Function_Info
    metamethod __call: function(Function_Info): Function_Info
 
    Function_Info: Function_Info
+   record Parameter
+      name: string
+      type: string
+   end
 
    name: string
    parameters: List<Parameter>
@@ -20,7 +19,11 @@ end
 
 local __Function_Info: metatable<Function_Info> = {
    __call = function(_self: Function_Info): Function_Info
-      return {}
+      return {
+         name = "",
+         parameters = List(),
+         return_types = List(),
+      }
    end,
 }
 
diff --git a/src/awesomewm.d.tl/filesystem/file_writer.tl b/src/awesomewm.d.tl/filesystem/file_writer.tl
new file mode 100644
index 0000000..e15b8b2
--- /dev/null
+++ b/src/awesomewm.d.tl/filesystem/file_writer.tl
@@ -0,0 +1,31 @@
+local file = require "pl.file"
+local log = require "logger"
+local path = require "pl.path"
+
+local function write_file(file_content: string, file_path: string): boolean, nil | string
+   -- Make sure the directory we want to write the file to exists
+   local directory = path.dirname(file_path)
+   if not path.isdir(directory) then
+      path.mkdir(directory)
+   end
+
+   return file.write(file_path, file_content, false)
+end
+
+local module = {}
+
+function module.write(file_content: string, file_path: string)
+   local success, error_message = write_file(file_content, file_path)
+
+   if not success then
+      log:error {
+         "generator.write error",
+         error = error_message,
+      }
+      return
+   end
+
+   log:info { "Successfully wrote file", file = file_path }
+end
+
+return module
diff --git a/src/awesomewm.d.tl/filesystem/init.tl b/src/awesomewm.d.tl/filesystem/init.tl
new file mode 100644
index 0000000..5a74251
--- /dev/null
+++ b/src/awesomewm.d.tl/filesystem/init.tl
@@ -0,0 +1,3 @@
+return {
+   file_writer = require "filesystem.file_writer",
+}
diff --git a/src/awesomewm.d.tl/generator/init.tl b/src/awesomewm.d.tl/generator/init.tl
index d72d20d..a769ed8 100644
--- a/src/awesomewm.d.tl/generator/init.tl
+++ b/src/awesomewm.d.tl/generator/init.tl
@@ -1,84 +1,4 @@
-local file = require "pl.file"
-local template = require "pl.template"
-local path = require "pl.path"
-local log = require "logger"
-local utils = require "utils"
-local snippets = require "generator.snippets"
-
-local tmpl = (function(mod: string): string
-   local package_path = utils.do_or_fail(path.package_path, mod)
-   local package_dir = path.dirname(package_path)
-   return utils.do_or_fail(file.read, package_dir .. "/template.tl.tmpl", false)
-end)(...)
-
-local generator = {}
-
-local record Generate_Teal_Data_Record
-   section: string
-   items: { snippets.Anonymous_Function_Record }
-end
-function generator.generate_teal(data: { Generate_Teal_Data_Record }): string
-   -- TODO : add the required modules to the generated code
-   -- TODO : replace this with a proper way to get the module name (will also probably need the module path)
-   local record Module_Data_Record
-      name: string
-      static_functions: { snippets.Anonymous_Function_Record }
-      constructors: { snippets.Anonymous_Function_Record }
-      methods: { string }
-      properties: { snippets.Anonymous_Function_Record }
-      signals: { snippets.Anonymous_Function_Record }
-   end
-   local module_data: Module_Data_Record = { name = "module_name" }
-   for _, item in ipairs(data) do
-      if item.section == "Static functions" then
-         -- TODO
-         module_data.static_functions = item.items
-      elseif item.section == "Constructors" then
-         -- TODO
-         module_data.constructors = item.items
-      elseif item.section == "Object properties" then
-         -- TODO
-         module_data.properties = item.items
-      elseif item.section == "Object methods" then
-         module_data.methods = {}
-         -- TODO : add the self parameter
-         -- TODO : define overrides to use the signal type in connect/emit functions
-         for _, i in ipairs(item.items) do
-            table.insert(
-               module_data.methods,
-               i.name .. ": " .. snippets.anonymous_function(i)
-            )
-         end
-      elseif item.section == "Signals" then
-         module_data.signals = item.items
-      end
-   end
-
-   local env = {
-      ipairs = ipairs,
-      module = module_data,
-   }
-   return utils.do_or_fail(template.substitute, tmpl, env)
-end
-
-function generator.write(file_content:string, file_path: string)
-   -- Make sure the directory we want to write the file to exists
-   local directory = path.dirname(file_path)
-   if not path.isdir(directory) then
-      path.mkdir(directory)
-   end
-
-   local success, error_message = file.write(file_path, file_content, false)
-
-   if not success then
-      log:error {
-         "generator.write error",
-         error = error_message,
-      }
-      return
-   end
-
-   log:info { "Successfully wrote file", file = file_path }
-end
-
-return generator
+return {
+   teal_type_definitions = require "generator.teal_type_definitions",
+   snippets = require "generator.snippets",
+}
diff --git a/src/awesomewm.d.tl/generator/snippets.tl b/src/awesomewm.d.tl/generator/snippets.tl
index 78ad3dc..ccd4084 100644
--- a/src/awesomewm.d.tl/generator/snippets.tl
+++ b/src/awesomewm.d.tl/generator/snippets.tl
@@ -1,66 +1,50 @@
+local Function_Info = require "entities.Function_Info"
+local List = require "pl.List"
 local utils = require "utils"
 local template = require "pl.template"
 
--- Refactor scraper code to use pl.List objects
-local function join<T>(arr: { string }, delim: string): string
+local snippets = {}
+
+function snippets.indent(str: string, level: number): string
+   level = level or 1
    local ret = ""
-   for i, t in ipairs(arr) do
-      ret = ret .. t
-      if i < #arr then
-         ret = ret .. delim
-      end
+   for line in str:gmatch("[^\n]+") do
+      ret = ret .. string.rep(" ", level * 3) .. line .. "\n"
    end
    return ret
 end
 
-local record Anonymous_Function_Parameter_Record
-   name: string
-   type: { string }
-end
-
-local record Anonymous_Function_Record
-   name: string
-   parameters: { Anonymous_Function_Parameter_Record }
-   returns: { string }
-end
-
-local snippets = {
-   Anonymous_Function_Parameter_Record = Anonymous_Function_Parameter_Record,
-   Anonymous_Function_Record = Anonymous_Function_Record,
-}
-
-function snippets.types_list(types: { string }): string
-   return join(types, ", ")
-end
-
-function snippets.anonymous_function(item: Anonymous_Function_Record): string
-   local parameters_string = ""
-   if item.parameters then
-      for i, param in ipairs(item.parameters) do
-         parameters_string = parameters_string .. param.name
-         local types = "any"
-         if param.type then
-            types = snippets.types_list(param.type)
-         end
-         parameters_string = parameters_string .. ": " .. types
-         if i < #item.parameters then
-            parameters_string = parameters_string .. ", "
-         end
-      end
-   end
-
-   local returns_string = ""
-   if item.returns then
-      returns_string = snippets.types_list(item.returns)
-   end
-
+function snippets.render_typed_variable(name: string, types: List<string>): string
    local tmpl =
-      [[function($(parameters_string))$(#returns_string > 0 and (": " .. returns_string))]]
+      [[$(name): $(types)]]
 
-   return utils.do_or_fail(template.substitute, tmpl, {
-      parameters_string = parameters_string,
-      returns_string = returns_string,
-   })
+   local tmpl_args = {
+      name = name,
+      types = types:concat(", "),
+   }
+
+   return utils.do_or_fail(template.substitute, tmpl, tmpl_args)
+end
+
+function snippets.render_anonymous_function_signature(item: Function_Info.Function_Info): string
+   local tmpl =
+      [[$(function_name): function($(function_parameter))$(#function_return > 0 and (": " .. function_return))]]
+
+   local tmpl_args = {
+      function_name = item.name,
+      function_parameter = item.parameters:map(function(param: Function_Info.Parameter): string
+         return snippets.render_typed_variable(param.name, List({param.type})) -- TODO : add support for multiple types
+      end):concat(", "),
+      function_return = item.return_types:concat(", "),
+   }
+
+   return utils.do_or_fail(template.substitute, tmpl, tmpl_args)
+end
+
+function snippets.render_record_functions(items: List<Function_Info.Function_Info>): string
+   return items:map(function(item: Function_Info.Function_Info): string
+      return snippets.render_anonymous_function_signature(item)
+   end):concat("\n")
 end
 
 return snippets
diff --git a/src/awesomewm.d.tl/generator/teal_type_definitions.tl b/src/awesomewm.d.tl/generator/teal_type_definitions.tl
new file mode 100644
index 0000000..14568b1
--- /dev/null
+++ b/src/awesomewm.d.tl/generator/teal_type_definitions.tl
@@ -0,0 +1,42 @@
+local Module_Doc = require "entities.Module_Doc"
+local template = require "pl.template"
+local utils = require "utils"
+local snippets = require "generator.snippets"
+
+-- The long therm goal is to have so many `snippets.render_*` functions that
+-- we can render the whole file with the smallest template possible.
+local tmpl = [[
+-- Auto generated file (Do not manually edit this file!)
+
+# if module.signals then
+local enum signals
+#  for _, signal in ipairs(module.signals) do
+   "$(signal.name)"
+#  end
+end
+
+# end -- /signals
+local record $(mod_name)
+# if #module.methods then
+   -- Object methods
+$(snippets.indent(snippets.render_record_functions(module.methods)))
+# end -- /methods
+end
+
+return $(mod_name)
+]]
+
+local module = {}
+
+function module.generate_teal(mod: string, data: Module_Doc.Module_Doc): string
+   local tmpl_args = {
+      ipairs = ipairs,
+      mod_name = mod,
+      module = data,
+      snippets = snippets,
+   }
+   return utils.do_or_fail(template.substitute, tmpl, tmpl_args)
+
+end
+
+return module
diff --git a/src/awesomewm.d.tl/generator/template.tl.tmpl b/src/awesomewm.d.tl/generator/template.tl.tmpl
deleted file mode 100644
index 84df6b4..0000000
--- a/src/awesomewm.d.tl/generator/template.tl.tmpl
+++ /dev/null
@@ -1,20 +0,0 @@
--- Auto generated file (Do not manually edit this file!)
-
-# if module.signals then
-local enum signals
-#  for _, signal in ipairs(module.signals) do
-   "$(signal.name)"
-#  end
-end
-
-# end -- /signals
-local record $(module.name)
-# if module.methods then
-   -- Object methods
-#  for _, method in ipairs(module.methods) do
-   $(method)
-#  end
-# end -- /methods
-end
-
-return $(module.name)
diff --git a/src/awesomewm.d.tl/init.tl b/src/awesomewm.d.tl/init.tl
index 686c1ee..be63003 100644
--- a/src/awesomewm.d.tl/init.tl
+++ b/src/awesomewm.d.tl/init.tl
@@ -1,9 +1,10 @@
 local crawler = require "crawler"
+local filesystem = require "filesystem"
 local inspect = require "inspect"
 local log = require "logger"
 local properties = require "properties"
 local scraper = require "scraper"
--- local generator = require "generator"
+local generator = require "generator"
 
 log:info(
    inspect { message = "Start extraction", base_url = properties.base_url }
@@ -28,12 +29,13 @@ log:info(inspect { modules_found = #module_infos })
 local html =
    crawler.fetch(properties.base_url .. "/widgets/wibox.widget.textbox.html")
 local module_doc = scraper.module_doc.get_doc_from_page(html)
-log:info(inspect { module_doc = module_doc })
+-- log:info(inspect { module_doc = module_doc })
 
 -- local items = scraper.get_doc_from_page(page)
 -- log:info(inspect { items })
 
--- generator.write(
---    generator.generate_teal(items),
---    properties.out_directory .. "/test.tl"
--- )
+local mod = "textbox"
+filesystem.file_writer.write(
+   generator.teal_type_definitions.generate_teal(mod, module_doc),
+   properties.out_directory .. "/" .. mod .. ".d.tl"
+)
diff --git a/src/awesomewm.d.tl/utils.tl b/src/awesomewm.d.tl/utils.tl
index 768af7f..4cd385c 100644
--- a/src/awesomewm.d.tl/utils.tl
+++ b/src/awesomewm.d.tl/utils.tl
@@ -58,9 +58,9 @@ end
 -- At some point, we should probably write a wrapper to make penlight's function work with pcalls.
 function utils.do_or_fail<T>(func: function<T>(...: any): (T | nil, string), ...: any): T
    local log = require "logger"
-   local res, err = func(...)
+   local ok, res, err = pcall(func, ...)
 
-   if not res then
+   if not (ok and res) then
       log:error { "do_or_fail failed!", error = err }
       error(err)
    end