Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 | 23x 23x 23x 23x 38x 38x 38x 36x 36x 29x 29x 30x 30x 2x 2x 2x 1x 1x 1x 28x 28x 28x 28x 6x 6x 6x 6x 6x 6x 9x 6x 3x 6x 3x 3x 3x 22x 22x 15x 7x 32x 28x 12x 12x 12x 2x 10x 10x 12x 2x 10x 10x 12x 8x 8x 8x 8x 8x 8x 24x 24x 24x 24x 24x 8x 8x 2x 6x 2x 4x 4x 8x 4x 4x 4x 4x 8x 4x 4x 4x 4x 2x 2x 2x 2x 3x 3x 3x 3x 3x 2x | import { splitCodeAndIndentation } from './helper.js';
const LINESLICE_CHAR_REGEX = /(\+?)(\d+)\[(\d*):(\d*)]/;
const LINESLICE_WORD_REGEX = /(\d+)\[(\d*)::(\d*)]/;
const LINEPART_REGEX = /(\d+)\[(["'])((?:\\.|[^\\])*?)\2]/;
const UNBOUNDED = -1;
export class HighlightRuleComponent {
lineNumber: number;
isSlice: boolean;
bounds: Array<[number, number]>;
constructor(
lineNumber: number,
isSlice: boolean = false,
bounds: Array<[number, number]> = [],
) {
this.lineNumber = lineNumber;
this.isSlice = isSlice;
this.bounds = bounds;
}
static isValidLineNumber(lineNumStr: string, min: number, max: number, offset: number) {
let lineNum = Number(lineNumStr);
if (Number.isNaN(lineNum) || !Number.isInteger(lineNum)) return null;
lineNum += offset;
return lineNum >= min && lineNum <= max ? lineNum : null;
}
static parseRuleComponent(compString: string, lineNumberOffset: number, lines: string[]) {
// Match line-part syntax
const linepartMatch = compString.match(LINEPART_REGEX);
if (linepartMatch) {
// There are four capturing groups: [full match, line number, quote type, line part]
const [, lineNumberString, , linePartWithQuotes] = linepartMatch;
const lineNumber = HighlightRuleComponent
.isValidLineNumber(lineNumberString, 1, lines.length, lineNumberOffset);
if (!lineNumber) return null;
const linePart = linePartWithQuotes.replace(/\\'/g, '\'').replace(/\\"/g, '"'); // unescape quotes
const bounds = HighlightRuleComponent.computeLinePartBounds(linePart, lines[lineNumber - 1]);
return new HighlightRuleComponent(lineNumber, true, bounds);
}
// Match line-slice (character and word variant) syntax
const linesliceCharMatch = compString.match(LINESLICE_CHAR_REGEX);
const linesliceWordMatch = compString.match(LINESLICE_WORD_REGEX);
const sliceMatch = linesliceCharMatch || linesliceWordMatch;
if (sliceMatch) {
// There are four/five capturing groups: [full match, is absolute indexing (for char match),
// line number, start bound, end bound]
const groups = sliceMatch.slice(1); // discard full match
let isAbsoluteIndexing = false;
if (sliceMatch === linesliceCharMatch) {
isAbsoluteIndexing = groups.shift() === '+';
}
const lineNumber = HighlightRuleComponent
.isValidLineNumber(groups.shift() ?? '', 1, lines.length, lineNumberOffset);
Iif (!lineNumber) return null;
const isUnbounded = groups.every(x => x === '');
if (isUnbounded) {
return new HighlightRuleComponent(lineNumber, true, []);
}
let bound = groups.map(x => (x !== '' ? parseInt(x, 10) : UNBOUNDED)) as [number, number];
const isCharSlice = sliceMatch === linesliceCharMatch;
bound = isCharSlice
? HighlightRuleComponent.computeCharBounds(bound, lines[lineNumber - 1], isAbsoluteIndexing)
: HighlightRuleComponent.computeWordBounds(bound, lines[lineNumber - 1]);
return new HighlightRuleComponent(lineNumber, true, [bound]);
}
// Match line-number syntax
const lineNumber = HighlightRuleComponent
.isValidLineNumber(compString, 1, lines.length, lineNumberOffset);
if (lineNumber) {
return new HighlightRuleComponent(lineNumber);
}
// the string is an improperly written rule
return null;
}
/**
* Compares the component's line number to a given line number.
*
* @param lineNumber The line number to compare
* @returns {number} A negative number, zero, or a positive number when the given line number
* is after, at, or before the component's line number
*/
compareLine(lineNumber: number): number {
return this.lineNumber - lineNumber;
}
isUnboundedSlice() {
return this.isSlice && this.bounds.length === 0;
}
/**
* Computes the actual character bound given a user-defined character bound and a line,
* comparing the bounds and the line's range.
*
* If the bound does not specify either the start or the end bound, the computed bound will default
* to the start or end of line. The bound can be either absolute or relative to the indentation level.
*
* @param bound The user-defined bound
* @param line The given line
* @param isAbsoluteIndexing Whether the bound is absolute or relative to the indentation level
* @returns {[number, number]} The actual bound computed
*/
static computeCharBounds(bound: [number, number], line: string,
isAbsoluteIndexing: boolean): [number, number] {
const [indents] = splitCodeAndIndentation(line);
let [start, end] = bound;
if (start === UNBOUNDED) {
start = isAbsoluteIndexing ? 0 : indents.length;
} else {
start = isAbsoluteIndexing ? start : Math.max(start + indents.length, indents.length);
start = Math.min(start, line.length);
}
if (end === UNBOUNDED) {
end = line.length;
} else {
end = isAbsoluteIndexing ? end : Math.max(end + indents.length, indents.length);
end = Math.min(end, line.length);
}
return [start, end];
}
/**
* Computes the actual character bounds given a user-defined word bound and a line,
* comparing the bounds and the line's range.
*
* If the bound does not specify either the start or the end bound, the computed bound will default
* to the start or end of line, excluding leading whitespaces.
*
* @param bound The user-defined bound
* @param line The given line
* @returns {[number, number]} The actual bound computed
*/
static computeWordBounds(bound: [number, number], line: string): [number, number] {
const [indents, content] = splitCodeAndIndentation(line);
const words = content.split(/\s+/);
const wordPositions: number[][] = [];
let contentRemaining = content;
let curr = indents.length;
words.forEach((word: string) => {
const start = contentRemaining.indexOf(word);
const end = start + word.length;
wordPositions.push([curr + start, curr + end]);
contentRemaining = contentRemaining.substring(end);
curr += end;
});
let [start, end] = bound;
if (start === UNBOUNDED || start < 0) {
start = indents.length;
} else if (start > words.length) {
start = line.length;
} else {
const [wordStart] = wordPositions[start];
start = wordStart;
}
if (end === UNBOUNDED || end > words.length) {
end = line.length;
} else Iif (end < 0) {
end = indents.length;
} else {
const [, wordEnd] = wordPositions[end - 1];
end = wordEnd;
}
return [start, end];
}
/**
* Computes the actual bounds given a user-defined line part and a line.
*
* @param linePart The user-defined line part
* @param line The given line
* @returns {Array<[number, number]>} The bounds computed, each indicates the range of each
* occurrences of the line part in the line
*/
static computeLinePartBounds(linePart: string, line: string): Array<[number, number]> {
const [indents, content] = splitCodeAndIndentation(line);
let contentRemaining = content;
let start = contentRemaining.indexOf(linePart);
if (linePart === '' || start === -1) {
return [[0, 0]];
}
const bounds: Array<[number, number]> = [];
let curr = indents.length;
while (start !== -1) {
const end = start + linePart.length;
bounds.push([curr + start, curr + end]);
curr += end;
contentRemaining = contentRemaining.substring(end);
start = contentRemaining.indexOf(linePart);
}
return bounds;
}
}
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