Add template and saving functions

function.tmpl

@@ -0,0 +1,2 @@
+---@diagnostic disable: missing-return, lowercase-global
+function {{.Name}}({{range $index, $param := .Params}}{{if $index}}, {{end}}{{$param.Name}}: {{$param.Type}}{{end}}) end

types.go

@@ -1,13 +1,58 @@
 package main
 
+import (
+	_ "embed"
+	"log"
+	"os"
+	"text/template"
+)
+
+var fns = template.FuncMap{
+	"plus1": func(x int) int {
+		return x + 1
+	},
+}
+
+//go:embed function.tmpl
+var templatestr string
+
+var functionTemplate *template.Template
+func init() {
+	var err error
+	functionTemplate, err = template.New("class").Funcs(fns).Parse(templatestr)
+	if err != nil {
+		Error.Printf("Error parsing template: %v", err)
+		return
+	}
+	log.Printf("%#v", functionTemplate)
+}
+
 type (
 	Function struct {
+		Name      string
 		Arguments []Argument
 		Returns   []Argument
 	}
 	Argument struct {
-		Name string
-		Type string
+		Name        string
+		Type        string
 		Description string
 	}
-)
+)
+
+func (f *Function) ResolveFileName() string {
+	return f.Name + ".lua"
+}
+func (f *Function) WriteFile() error {
+	file, err := os.Create(f.ResolveFileName())
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+	
+	err = functionTemplate.Execute(file, f)
+	if err != nil {
+		return err
+	}
+	return nil
+}