Function cases

vm/runtime/helpers/main.go:58–91

(op string, xs ...[]string)

}

func cases(op string, xs ...[]string) string {
	var types []string
	for _, x := range xs {
		types = append(types, x...)
	}

	_, _ = fmt.Fprintf(os.Stderr, "Generating %s cases for %v\n", op, types)

	var out string
	echo := func(s string, xs ...any) {
		out += fmt.Sprintf(s, xs...) + "\n"
	}
	for _, a := range types {
		echo(`case %v:`, a)
		echo(`switch y := b.(type) {`)
		for _, b := range types {
			t := "int"
			if isDuration(a) || isDuration(b) {
				t = "time.Duration"
			}
			if isFloat(a) || isFloat(b) {
				t = "float64"
			}
			echo(`case %v:`, b)
			if op == "/" {
				echo(`return float64(x) / float64(y)`)
			} else {
				echo(`return %v(x) %v %v(y)`, t, op, t)
			}
		}
		echo(`}`)
	}
	return strings.TrimRight(out, "\n")
}

func arrayEqualCases(xs ...[]string) string {
	var types []string