Function logStack

types/util.go:49–57

logStack prints the formatted "start" message to stderr and returns a closure that prints the corresponding "end" message. Call using 'defer logStack(...)()' to show builder stack on panic. Don't forget trailing parens!

(format string, args ...interface{})

// Don't forget trailing parens!
//
func logStack(format string, args ...interface{}) func() {
	msg := fmt.Sprintf(format, args...)
	io.WriteString(os.Stderr, msg)
	io.WriteString(os.Stderr, "\n")
	return func() {
		io.WriteString(os.Stderr, msg)
		io.WriteString(os.Stderr, " end\n")
	}
}

// newVar creates a 'var' for use in a types.Tuple.
func newVar(name string, typ Type) *Var {