Function parseEnumValue

env/parsers.go:28–37

parseEnumValue returns a parser function that looks up the input value in a map. The input value is trimmed before lookup. It assumes that m contains lowercase keys.

(m map[string]T)

// parseEnumValue returns a parser function that looks up the input value in a map.
// The input value is trimmed before lookup. It assumes that m contains lowercase keys.
func parseEnumValue[T any](m map[string]T) ParseFn[T] {
	return func(env string) (T, error) {
		var zero T
		env = strings.ToLower(env)
		if val, ok := m[env]; ok {
			return val, nil
		}
		return zero, fmt.Errorf("invalid value %q", env)
	}
}

// parseFloat parses the environment variable value as a 64-bit float.
func parseFloat(env string) (float64, error) {