Function ValueToString

value/coerce.go:161–194

ValueToString convert all scalar values to their go string.

(val Value)

// ValueToString convert all scalar values to their go string.
func ValueToString(val Value) (string, bool) {
	if val == nil || val.Err() {
		return "", false
	}
	switch v := val.(type) {
	case StringValue:
		return v.Val(), true
	case TimeValue:
		return fmt.Sprintf("%v", v.Val()), true
	case ByteSliceValue:
		return string(v.Val()), true
	case NumericValue, BoolValue, IntValue:
		return val.ToString(), true
	case Slice:
		// This is controversial, if we are demanding a "ToString"
		// should we:
		// 1)  take first?
		// 2)  append comma separated?
		// 3)  error?
		//
		// Our answer is that we are demanding a scalar string
		// and going to take first.  calling function would have had to do type detection
		// if they wanted something else.
		if v.Len() == 0 {
			return "", false
		}
		v1 := v.SliceValue()[0]
		if v1 == nil {
			return "", false
		}
		return v1.ToString(), true
	}
	return "", false
}

// ValueToStrings convert all scalar values to their go []string.
func ValueToStrings(val Value) ([]string, bool) {