diff options
Diffstat (limited to 'vendor/github.com/pquerna/ffjson/fflib/v1/reader.go')
| -rw-r--r-- | vendor/github.com/pquerna/ffjson/fflib/v1/reader.go | 512 |
1 files changed, 0 insertions, 512 deletions
diff --git a/vendor/github.com/pquerna/ffjson/fflib/v1/reader.go b/vendor/github.com/pquerna/ffjson/fflib/v1/reader.go deleted file mode 100644 index 96746b9d4..000000000 --- a/vendor/github.com/pquerna/ffjson/fflib/v1/reader.go +++ /dev/null @@ -1,512 +0,0 @@ -/** - * Copyright 2014 Paul Querna - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - */ - -package v1 - -import ( - "fmt" - "io" - "unicode" - "unicode/utf16" -) - -const sliceStringMask = cIJC | cNFP - -type ffReader struct { - s []byte - i int - l int -} - -func newffReader(d []byte) *ffReader { - return &ffReader{ - s: d, - i: 0, - l: len(d), - } -} - -func (r *ffReader) Slice(start, stop int) []byte { - return r.s[start:stop] -} - -func (r *ffReader) Pos() int { - return r.i -} - -// Reset the reader, and add new input. -func (r *ffReader) Reset(d []byte) { - r.s = d - r.i = 0 - r.l = len(d) -} - -// Calculates the Position with line and line offset, -// because this isn't counted for performance reasons, -// it will iterate the buffer from the beginning, and should -// only be used in error-paths. -func (r *ffReader) PosWithLine() (int, int) { - currentLine := 1 - currentChar := 0 - - for i := 0; i < r.i; i++ { - c := r.s[i] - currentChar++ - if c == '\n' { - currentLine++ - currentChar = 0 - } - } - - return currentLine, currentChar -} - -func (r *ffReader) ReadByteNoWS() (byte, error) { - if r.i >= r.l { - return 0, io.EOF - } - - j := r.i - - for { - c := r.s[j] - j++ - - // inline whitespace parsing gives another ~8% performance boost - // for many kinds of nicely indented JSON. - // ... and using a [255]bool instead of multiple ifs, gives another 2% - /* - if c != '\t' && - c != '\n' && - c != '\v' && - c != '\f' && - c != '\r' && - c != ' ' { - r.i = j - return c, nil - } - */ - if whitespaceLookupTable[c] == false { - r.i = j - return c, nil - } - - if j >= r.l { - return 0, io.EOF - } - } -} - -func (r *ffReader) ReadByte() (byte, error) { - if r.i >= r.l { - return 0, io.EOF - } - - r.i++ - - return r.s[r.i-1], nil -} - -func (r *ffReader) UnreadByte() error { - if r.i <= 0 { - panic("ffReader.UnreadByte: at beginning of slice") - } - r.i-- - return nil -} - -func (r *ffReader) readU4(j int) (rune, error) { - - var u4 [4]byte - for i := 0; i < 4; i++ { - if j >= r.l { - return -1, io.EOF - } - c := r.s[j] - if byteLookupTable[c]&cVHC != 0 { - u4[i] = c - j++ - continue - } else { - // TODO(pquerna): handle errors better. layering violation. - return -1, fmt.Errorf("lex_string_invalid_hex_char: %v %v", c, string(u4[:])) - } - } - - // TODO(pquerna): utf16.IsSurrogate - rr, err := ParseUint(u4[:], 16, 64) - if err != nil { - return -1, err - } - return rune(rr), nil -} - -func (r *ffReader) handleEscaped(c byte, j int, out DecodingBuffer) (int, error) { - if j >= r.l { - return 0, io.EOF - } - - c = r.s[j] - j++ - - if c == 'u' { - ru, err := r.readU4(j) - if err != nil { - return 0, err - } - - if utf16.IsSurrogate(ru) { - ru2, err := r.readU4(j + 6) - if err != nil { - return 0, err - } - out.Write(r.s[r.i : j-2]) - r.i = j + 10 - j = r.i - rval := utf16.DecodeRune(ru, ru2) - if rval != unicode.ReplacementChar { - out.WriteRune(rval) - } else { - return 0, fmt.Errorf("lex_string_invalid_unicode_surrogate: %v %v", ru, ru2) - } - } else { - out.Write(r.s[r.i : j-2]) - r.i = j + 4 - j = r.i - out.WriteRune(ru) - } - return j, nil - } else if byteLookupTable[c]&cVEC == 0 { - return 0, fmt.Errorf("lex_string_invalid_escaped_char: %v", c) - } else { - out.Write(r.s[r.i : j-2]) - r.i = j - j = r.i - - switch c { - case '"': - out.WriteByte('"') - case '\\': - out.WriteByte('\\') - case '/': - out.WriteByte('/') - case 'b': - out.WriteByte('\b') - case 'f': - out.WriteByte('\f') - case 'n': - out.WriteByte('\n') - case 'r': - out.WriteByte('\r') - case 't': - out.WriteByte('\t') - } - } - - return j, nil -} - -func (r *ffReader) SliceString(out DecodingBuffer) error { - var c byte - // TODO(pquerna): string_with_escapes? de-escape here? - j := r.i - - for { - if j >= r.l { - return io.EOF - } - - j, c = scanString(r.s, j) - - if c == '"' { - if j != r.i { - out.Write(r.s[r.i : j-1]) - r.i = j - } - return nil - } else if c == '\\' { - var err error - j, err = r.handleEscaped(c, j, out) - if err != nil { - return err - } - } else if byteLookupTable[c]&cIJC != 0 { - return fmt.Errorf("lex_string_invalid_json_char: %v", c) - } - continue - } -} - -// TODO(pquerna): consider combining wibth the normal byte mask. -var whitespaceLookupTable [256]bool = [256]bool{ - false, /* 0 */ - false, /* 1 */ - false, /* 2 */ - false, /* 3 */ - false, /* 4 */ - false, /* 5 */ - false, /* 6 */ - false, /* 7 */ - false, /* 8 */ - true, /* 9 */ - true, /* 10 */ - true, /* 11 */ - true, /* 12 */ - true, /* 13 */ - false, /* 14 */ - false, /* 15 */ - false, /* 16 */ - false, /* 17 */ - false, /* 18 */ - false, /* 19 */ - false, /* 20 */ - false, /* 21 */ - false, /* 22 */ - false, /* 23 */ - false, /* 24 */ - false, /* 25 */ - false, /* 26 */ - false, /* 27 */ - false, /* 28 */ - false, /* 29 */ - false, /* 30 */ - false, /* 31 */ - true, /* 32 */ - false, /* 33 */ - false, /* 34 */ - false, /* 35 */ - false, /* 36 */ - false, /* 37 */ - false, /* 38 */ - false, /* 39 */ - false, /* 40 */ - false, /* 41 */ - false, /* 42 */ - false, /* 43 */ - false, /* 44 */ - false, /* 45 */ - false, /* 46 */ - false, /* 47 */ - false, /* 48 */ - false, /* 49 */ - false, /* 50 */ - false, /* 51 */ - false, /* 52 */ - false, /* 53 */ - false, /* 54 */ - false, /* 55 */ - false, /* 56 */ - false, /* 57 */ - false, /* 58 */ - false, /* 59 */ - false, /* 60 */ - false, /* 61 */ - false, /* 62 */ - false, /* 63 */ - false, /* 64 */ - false, /* 65 */ - false, /* 66 */ - false, /* 67 */ - false, /* 68 */ - false, /* 69 */ - false, /* 70 */ - false, /* 71 */ - false, /* 72 */ - false, /* 73 */ - false, /* 74 */ - false, /* 75 */ - false, /* 76 */ - false, /* 77 */ - false, /* 78 */ - false, /* 79 */ - false, /* 80 */ - false, /* 81 */ - false, /* 82 */ - false, /* 83 */ - false, /* 84 */ - false, /* 85 */ - false, /* 86 */ - false, /* 87 */ - false, /* 88 */ - false, /* 89 */ - false, /* 90 */ - false, /* 91 */ - false, /* 92 */ - false, /* 93 */ - false, /* 94 */ - false, /* 95 */ - false, /* 96 */ - false, /* 97 */ - false, /* 98 */ - false, /* 99 */ - false, /* 100 */ - false, /* 101 */ - false, /* 102 */ - false, /* 103 */ - false, /* 104 */ - false, /* 105 */ - false, /* 106 */ - false, /* 107 */ - false, /* 108 */ - false, /* 109 */ - false, /* 110 */ - false, /* 111 */ - false, /* 112 */ - false, /* 113 */ - false, /* 114 */ - false, /* 115 */ - false, /* 116 */ - false, /* 117 */ - false, /* 118 */ - false, /* 119 */ - false, /* 120 */ - false, /* 121 */ - false, /* 122 */ - false, /* 123 */ - false, /* 124 */ - false, /* 125 */ - false, /* 126 */ - false, /* 127 */ - false, /* 128 */ - false, /* 129 */ - false, /* 130 */ - false, /* 131 */ - false, /* 132 */ - false, /* 133 */ - false, /* 134 */ - false, /* 135 */ - false, /* 136 */ - false, /* 137 */ - false, /* 138 */ - false, /* 139 */ - false, /* 140 */ - false, /* 141 */ - false, /* 142 */ - false, /* 143 */ - false, /* 144 */ - false, /* 145 */ - false, /* 146 */ - false, /* 147 */ - false, /* 148 */ - false, /* 149 */ - false, /* 150 */ - false, /* 151 */ - false, /* 152 */ - false, /* 153 */ - false, /* 154 */ - false, /* 155 */ - false, /* 156 */ - false, /* 157 */ - false, /* 158 */ - false, /* 159 */ - false, /* 160 */ - false, /* 161 */ - false, /* 162 */ - false, /* 163 */ - false, /* 164 */ - false, /* 165 */ - false, /* 166 */ - false, /* 167 */ - false, /* 168 */ - false, /* 169 */ - false, /* 170 */ - false, /* 171 */ - false, /* 172 */ - false, /* 173 */ - false, /* 174 */ - false, /* 175 */ - false, /* 176 */ - false, /* 177 */ - false, /* 178 */ - false, /* 179 */ - false, /* 180 */ - false, /* 181 */ - false, /* 182 */ - false, /* 183 */ - false, /* 184 */ - false, /* 185 */ - false, /* 186 */ - false, /* 187 */ - false, /* 188 */ - false, /* 189 */ - false, /* 190 */ - false, /* 191 */ - false, /* 192 */ - false, /* 193 */ - false, /* 194 */ - false, /* 195 */ - false, /* 196 */ - false, /* 197 */ - false, /* 198 */ - false, /* 199 */ - false, /* 200 */ - false, /* 201 */ - false, /* 202 */ - false, /* 203 */ - false, /* 204 */ - false, /* 205 */ - false, /* 206 */ - false, /* 207 */ - false, /* 208 */ - false, /* 209 */ - false, /* 210 */ - false, /* 211 */ - false, /* 212 */ - false, /* 213 */ - false, /* 214 */ - false, /* 215 */ - false, /* 216 */ - false, /* 217 */ - false, /* 218 */ - false, /* 219 */ - false, /* 220 */ - false, /* 221 */ - false, /* 222 */ - false, /* 223 */ - false, /* 224 */ - false, /* 225 */ - false, /* 226 */ - false, /* 227 */ - false, /* 228 */ - false, /* 229 */ - false, /* 230 */ - false, /* 231 */ - false, /* 232 */ - false, /* 233 */ - false, /* 234 */ - false, /* 235 */ - false, /* 236 */ - false, /* 237 */ - false, /* 238 */ - false, /* 239 */ - false, /* 240 */ - false, /* 241 */ - false, /* 242 */ - false, /* 243 */ - false, /* 244 */ - false, /* 245 */ - false, /* 246 */ - false, /* 247 */ - false, /* 248 */ - false, /* 249 */ - false, /* 250 */ - false, /* 251 */ - false, /* 252 */ - false, /* 253 */ - false, /* 254 */ - false, /* 255 */ -} |