package service import ( "go/ast" ) func handleDecl(id int, decl ast.Decl, dst chan<- string, done chan<- bool) { code := "" switch d := decl.(type) { case *ast.FuncDecl: code += handleFuncDecl(d) case *ast.GenDecl: code += handleGenDecl(d) } dst <- code close(dst) done <- true }