(rendered: &mut String, control: char)
| 133 | } |
| 134 | |
| 135 | fn push_unicode_escape(rendered: &mut String, control: char) { |
| 136 | const HEX: &[u8; 16] = b"0123456789abcdef"; |
| 137 | |
| 138 | rendered.push_str("\\u"); |
| 139 | let value = u32::from(control); |
| 140 | for shift in [12_u32, 8, 4, 0] { |
| 141 | let nibble = ((value >> shift) & 0xF) as usize; |
| 142 | rendered.push(char::from(HEX[nibble])); |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | struct Parser<'a> { |
| 147 | chars: Vec<char>, |