Function modReverse

gjson.go:3005–3044

@reverse reverses array elements or root object members.

(json, arg string)

// @reverse reverses array elements or root object members.
func modReverse(json, arg string) string {
	res := Parse(json)
	if res.IsArray() {
		var values []Result
		res.ForEach(func(_, value Result) bool {
			values = append(values, value)
			return true
		})
		out := make([]byte, 0, len(json))
		out = append(out, '[')
		for i, j := len(values)-1, 0; i >= 0; i, j = i-1, j+1 {
			if j > 0 {
				out = append(out, ',')
			}
			out = append(out, values[i].Raw...)
		}
		out = append(out, ']')
		return bytesString(out)
	}
	if res.IsObject() {
		var keyValues []Result
		res.ForEach(func(key, value Result) bool {
			keyValues = append(keyValues, key, value)
			return true
		})
		out := make([]byte, 0, len(json))
		out = append(out, '{')
		for i, j := len(keyValues)-2, 0; i >= 0; i, j = i-2, j+1 {
			if j > 0 {
				out = append(out, ',')
			}
			out = append(out, keyValues[i+0].Raw...)
			out = append(out, ':')
			out = append(out, keyValues[i+1].Raw...)
		}
		out = append(out, '}')
		return bytesString(out)
	}
	return json
}

// @flatten an array with child arrays.
//