(j int)
| 130 | } |
| 131 | |
| 132 | func (r *ffReader) readU4(j int) (rune, error) { |
| 133 | |
| 134 | var u4 [4]byte |
| 135 | for i := 0; i < 4; i++ { |
| 136 | if j >= r.l { |
| 137 | return -1, io.EOF |
| 138 | } |
| 139 | c := r.s[j] |
| 140 | if byteLookupTable[c]&cVHC != 0 { |
| 141 | u4[i] = c |
| 142 | j++ |
| 143 | continue |
| 144 | } else { |
| 145 | // TODO(pquerna): handle errors better. layering violation. |
| 146 | return -1, fmt.Errorf("lex_string_invalid_hex_char: %v %v", c, string(u4[:])) |
| 147 | } |
| 148 | } |
| 149 | |
| 150 | // TODO(pquerna): utf16.IsSurrogate |
| 151 | rr, err := ParseUint(u4[:], 16, 64) |
| 152 | if err != nil { |
| 153 | return -1, err |
| 154 | } |
| 155 | return rune(rr), nil |
| 156 | } |
| 157 | |
| 158 | func (r *ffReader) handleEscaped(c byte, j int, out DecodingBuffer) (int, error) { |
| 159 | if j >= r.l { |
no test coverage detected