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| Less_Exception_Chunk | |
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| __construct | |
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| Chunks | |
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| CharCode | |
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| fail | |
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| 1 | <?php |
| 2 | /** |
| 3 | * @private |
| 4 | */ |
| 5 | class Less_Exception_Chunk extends Less_Exception_Parser { |
| 6 | |
| 7 | protected $parserCurrentIndex = 0; |
| 8 | |
| 9 | protected $emitFrom = 0; |
| 10 | |
| 11 | protected $input_len; |
| 12 | |
| 13 | /** |
| 14 | * @param string $input |
| 15 | * @param Exception|null $previous Previous exception |
| 16 | * @param int|null $index The current parser index |
| 17 | * @param array|null $currentFile The file |
| 18 | * @param int $code The exception code |
| 19 | */ |
| 20 | public function __construct( $input, ?Exception $previous = null, $index = null, $currentFile = null, $code = 0 ) { |
| 21 | $this->message = 'ParseError: Unexpected input'; // default message |
| 22 | |
| 23 | $this->index = $index; |
| 24 | |
| 25 | $this->currentFile = $currentFile; |
| 26 | |
| 27 | $this->input = $input; |
| 28 | $this->input_len = strlen( $input ); |
| 29 | |
| 30 | $this->Chunks(); |
| 31 | $this->genMessage(); |
| 32 | } |
| 33 | |
| 34 | /** |
| 35 | * See less.js chunks() |
| 36 | * We don't actually need the chunks |
| 37 | */ |
| 38 | protected function Chunks() { |
| 39 | $level = 0; |
| 40 | $parenLevel = 0; |
| 41 | $lastMultiCommentEndBrace = null; |
| 42 | $lastOpening = null; |
| 43 | $lastMultiComment = null; |
| 44 | $lastParen = null; |
| 45 | |
| 46 | // phpcs:ignore Generic.CodeAnalysis.JumbledIncrementer |
| 47 | for ( $this->parserCurrentIndex = 0; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++ ) { |
| 48 | $cc = $this->CharCode( $this->parserCurrentIndex ); |
| 49 | if ( ( ( $cc >= 97 ) && ( $cc <= 122 ) ) || ( $cc < 34 ) ) { |
| 50 | // a-z or whitespace |
| 51 | continue; |
| 52 | } |
| 53 | |
| 54 | switch ( $cc ) { |
| 55 | |
| 56 | // ( |
| 57 | case 40: |
| 58 | $parenLevel++; |
| 59 | $lastParen = $this->parserCurrentIndex; |
| 60 | break; |
| 61 | |
| 62 | // ) |
| 63 | case 41: |
| 64 | $parenLevel--; |
| 65 | if ( $parenLevel < 0 ) { |
| 66 | return $this->fail( "missing opening `(`" ); |
| 67 | } |
| 68 | break; |
| 69 | |
| 70 | // ; |
| 71 | case 59: |
| 72 | // if (!$parenLevel) { $this->emitChunk(); } |
| 73 | break; |
| 74 | |
| 75 | // { |
| 76 | case 123: |
| 77 | $level++; |
| 78 | $lastOpening = $this->parserCurrentIndex; |
| 79 | break; |
| 80 | |
| 81 | // } |
| 82 | case 125: |
| 83 | $level--; |
| 84 | if ( $level < 0 ) { |
| 85 | return $this->fail( "missing opening `{`" ); |
| 86 | |
| 87 | } |
| 88 | // if (!$level && !$parenLevel) { $this->emitChunk(); } |
| 89 | break; |
| 90 | // \ |
| 91 | case 92: |
| 92 | if ( $this->parserCurrentIndex < $this->input_len - 1 ) { |
| 93 | $this->parserCurrentIndex++; |
| 94 | break; |
| 95 | } |
| 96 | return $this->fail( "unescaped `\\`" ); |
| 97 | |
| 98 | // ", ' and ` |
| 99 | case 34: |
| 100 | case 39: |
| 101 | case 96: |
| 102 | $matched = 0; |
| 103 | $currentChunkStartIndex = $this->parserCurrentIndex; |
| 104 | for ( $this->parserCurrentIndex += 1; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++ ) { |
| 105 | $cc2 = $this->CharCode( $this->parserCurrentIndex ); |
| 106 | if ( $cc2 > 96 ) { |
| 107 | continue; |
| 108 | } |
| 109 | if ( $cc2 == $cc ) { |
| 110 | $matched = 1; |
| 111 | break; |
| 112 | } |
| 113 | if ( $cc2 == 92 ) { // \ |
| 114 | if ( $this->parserCurrentIndex == $this->input_len - 1 ) { |
| 115 | return $this->fail( "unescaped `\\`" ); |
| 116 | } |
| 117 | $this->parserCurrentIndex++; |
| 118 | } |
| 119 | } |
| 120 | if ( $matched ) { |
| 121 | break; |
| 122 | } |
| 123 | return $this->fail( "unmatched `" . chr( $cc ) . "`", $currentChunkStartIndex ); |
| 124 | |
| 125 | // /, check for comment |
| 126 | case 47: |
| 127 | if ( $parenLevel || ( $this->parserCurrentIndex == $this->input_len - 1 ) ) { |
| 128 | break; |
| 129 | } |
| 130 | $cc2 = $this->CharCode( $this->parserCurrentIndex + 1 ); |
| 131 | if ( $cc2 == 47 ) { |
| 132 | // //, find lnfeed |
| 133 | for ( $this->parserCurrentIndex += 2; $this->parserCurrentIndex < $this->input_len; $this->parserCurrentIndex++ ) { |
| 134 | $cc2 = $this->CharCode( $this->parserCurrentIndex ); |
| 135 | if ( ( $cc2 <= 13 ) && ( ( $cc2 == 10 ) || ( $cc2 == 13 ) ) ) { |
| 136 | break; |
| 137 | } |
| 138 | } |
| 139 | } elseif ( $cc2 == 42 ) { |
| 140 | // /*, find */ |
| 141 | $lastMultiComment = $currentChunkStartIndex = $this->parserCurrentIndex; |
| 142 | for ( $this->parserCurrentIndex += 2; $this->parserCurrentIndex < $this->input_len - 1; $this->parserCurrentIndex++ ) { |
| 143 | $cc2 = $this->CharCode( $this->parserCurrentIndex ); |
| 144 | if ( $cc2 == 125 ) { |
| 145 | $lastMultiCommentEndBrace = $this->parserCurrentIndex; |
| 146 | } |
| 147 | if ( $cc2 != 42 ) { |
| 148 | continue; |
| 149 | } |
| 150 | if ( $this->CharCode( $this->parserCurrentIndex + 1 ) == 47 ) { |
| 151 | break; |
| 152 | } |
| 153 | } |
| 154 | if ( $this->parserCurrentIndex == $this->input_len - 1 ) { |
| 155 | return $this->fail( "missing closing `*/`", $currentChunkStartIndex ); |
| 156 | } |
| 157 | } |
| 158 | break; |
| 159 | |
| 160 | // *, check for unmatched */ |
| 161 | case 42: |
| 162 | if ( ( $this->parserCurrentIndex < $this->input_len - 1 ) && ( $this->CharCode( $this->parserCurrentIndex + 1 ) == 47 ) ) { |
| 163 | return $this->fail( "unmatched `/*`" ); |
| 164 | } |
| 165 | break; |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | if ( $level !== 0 ) { |
| 170 | if ( ( $lastMultiComment > $lastOpening ) && ( $lastMultiCommentEndBrace > $lastMultiComment ) ) { |
| 171 | return $this->fail( "missing closing `}` or `*/`", $lastOpening ); |
| 172 | } else { |
| 173 | return $this->fail( "missing closing `}`", $lastOpening ); |
| 174 | } |
| 175 | } elseif ( $parenLevel !== 0 ) { |
| 176 | return $this->fail( "missing closing `)`", $lastParen ); |
| 177 | } |
| 178 | |
| 179 | // chunk didn't fail |
| 180 | |
| 181 | //$this->emitChunk(true); |
| 182 | } |
| 183 | |
| 184 | public function CharCode( $pos ) { |
| 185 | return ord( $this->input[$pos] ); |
| 186 | } |
| 187 | |
| 188 | public function fail( $msg, $index = null ) { |
| 189 | if ( !$index ) { |
| 190 | $this->index = $this->parserCurrentIndex; |
| 191 | } else { |
| 192 | $this->index = $index; |
| 193 | } |
| 194 | $this->message = 'ParseError: ' . $msg; |
| 195 | } |
| 196 | |
| 197 | /* |
| 198 | function emitChunk( $force = false ){ |
| 199 | $len = $this->parserCurrentIndex - $this->emitFrom; |
| 200 | if ((($len < 512) && !$force) || !$len) { |
| 201 | return; |
| 202 | } |
| 203 | $chunks[] = substr($this->input, $this->emitFrom, $this->parserCurrentIndex + 1 - $this->emitFrom ); |
| 204 | $this->emitFrom = $this->parserCurrentIndex + 1; |
| 205 | } |
| 206 | */ |
| 207 | |
| 208 | } |