155 lines
6 KiB
JavaScript
155 lines
6 KiB
JavaScript
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"use strict";
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var __extends = (this && this.__extends) || (function () {
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var extendStatics = function (d, b) {
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extendStatics = Object.setPrototypeOf ||
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({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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return extendStatics(d, b);
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};
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return function (d, b) {
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if (typeof b !== "function" && b !== null)
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throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
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extendStatics(d, b);
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function __() { this.constructor = d; }
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d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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};
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})();
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var __read = (this && this.__read) || function (o, n) {
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var m = typeof Symbol === "function" && o[Symbol.iterator];
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if (!m) return o;
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var i = m.call(o), r, ar = [], e;
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try {
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while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
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}
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catch (error) { e = { error: error }; }
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finally {
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try {
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if (r && !r.done && (m = i["return"])) m.call(i);
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}
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finally { if (e) throw e.error; }
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}
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return ar;
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};
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.FindTeX = void 0;
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var FindMath_js_1 = require("../../core/FindMath.js");
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var string_js_1 = require("../../util/string.js");
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var MathItem_js_1 = require("../../core/MathItem.js");
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var FindTeX = (function (_super) {
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__extends(FindTeX, _super);
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function FindTeX(options) {
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var _this = _super.call(this, options) || this;
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_this.getPatterns();
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return _this;
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}
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FindTeX.prototype.getPatterns = function () {
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var _this = this;
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var options = this.options;
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var starts = [], parts = [], subparts = [];
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this.end = {};
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this.env = this.sub = 0;
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var i = 1;
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options['inlineMath'].forEach(function (delims) { return _this.addPattern(starts, delims, false); });
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options['displayMath'].forEach(function (delims) { return _this.addPattern(starts, delims, true); });
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if (starts.length) {
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parts.push(starts.sort(string_js_1.sortLength).join('|'));
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}
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if (options['processEnvironments']) {
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parts.push('\\\\begin\\s*\\{([^}]*)\\}');
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this.env = i;
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i++;
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}
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if (options['processEscapes']) {
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subparts.push('\\\\([\\\\$])');
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}
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if (options['processRefs']) {
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subparts.push('(\\\\(?:eq)?ref\\s*\\{[^}]*\\})');
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}
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if (subparts.length) {
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parts.push('(' + subparts.join('|') + ')');
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this.sub = i;
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}
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this.start = new RegExp(parts.join('|'), 'g');
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this.hasPatterns = (parts.length > 0);
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};
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FindTeX.prototype.addPattern = function (starts, delims, display) {
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var _a = __read(delims, 2), open = _a[0], close = _a[1];
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starts.push((0, string_js_1.quotePattern)(open));
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this.end[open] = [close, display, this.endPattern(close)];
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};
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FindTeX.prototype.endPattern = function (end, endp) {
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return new RegExp((endp || (0, string_js_1.quotePattern)(end)) + '|\\\\(?:[a-zA-Z]|.)|[{}]', 'g');
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};
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FindTeX.prototype.findEnd = function (text, n, start, end) {
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var _a = __read(end, 3), close = _a[0], display = _a[1], pattern = _a[2];
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var i = pattern.lastIndex = start.index + start[0].length;
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var match, braces = 0;
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while ((match = pattern.exec(text))) {
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if ((match[1] || match[0]) === close && braces === 0) {
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return (0, MathItem_js_1.protoItem)(start[0], text.substr(i, match.index - i), match[0], n, start.index, match.index + match[0].length, display);
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}
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else if (match[0] === '{') {
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braces++;
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}
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else if (match[0] === '}' && braces) {
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braces--;
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}
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}
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return null;
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};
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FindTeX.prototype.findMathInString = function (math, n, text) {
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var start, match;
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this.start.lastIndex = 0;
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while ((start = this.start.exec(text))) {
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if (start[this.env] !== undefined && this.env) {
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var end = '\\\\end\\s*(\\{' + (0, string_js_1.quotePattern)(start[this.env]) + '\\})';
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match = this.findEnd(text, n, start, ['{' + start[this.env] + '}', true, this.endPattern(null, end)]);
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if (match) {
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match.math = match.open + match.math + match.close;
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match.open = match.close = '';
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}
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}
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else if (start[this.sub] !== undefined && this.sub) {
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var math_1 = start[this.sub];
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var end = start.index + start[this.sub].length;
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if (math_1.length === 2) {
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match = (0, MathItem_js_1.protoItem)('', math_1.substr(1), '', n, start.index, end);
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}
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else {
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match = (0, MathItem_js_1.protoItem)('', math_1, '', n, start.index, end, false);
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}
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}
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else {
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match = this.findEnd(text, n, start, this.end[start[0]]);
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}
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if (match) {
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math.push(match);
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this.start.lastIndex = match.end.n;
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}
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}
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};
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FindTeX.prototype.findMath = function (strings) {
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var math = [];
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if (this.hasPatterns) {
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for (var i = 0, m = strings.length; i < m; i++) {
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this.findMathInString(math, i, strings[i]);
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}
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}
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return math;
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};
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FindTeX.OPTIONS = {
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inlineMath: [
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['\\(', '\\)']
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],
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displayMath: [
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['$$', '$$'],
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['\\[', '\\]']
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],
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processEscapes: true,
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processEnvironments: true,
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processRefs: true,
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};
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return FindTeX;
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}(FindMath_js_1.AbstractFindMath));
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exports.FindTeX = FindTeX;
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//# sourceMappingURL=FindTeX.js.map
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