66 lines
2.1 KiB
JavaScript
66 lines
2.1 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.unitMultipliers = unitMultipliers;
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exports.oneLeft = oneLeft;
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const auditory_description_js_1 = require("../audio/auditory_description.js");
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const XpathUtil = require("../common/xpath_util.js");
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const locale_js_1 = require("../l10n/locale.js");
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const semantic_meaning_js_1 = require("../semantic_tree/semantic_meaning.js");
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function unitMultipliers(nodes, _context) {
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const children = nodes;
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let counter = 0;
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return function () {
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const descr = auditory_description_js_1.AuditoryDescription.create({
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text: rightMostUnit(children[counter]) &&
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leftMostUnit(children[counter + 1])
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? locale_js_1.LOCALE.MESSAGES.unitTimes
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: ''
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}, {});
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counter++;
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return [descr];
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};
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}
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const SCRIPT_ELEMENTS = [
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semantic_meaning_js_1.SemanticType.SUPERSCRIPT,
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semantic_meaning_js_1.SemanticType.SUBSCRIPT,
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semantic_meaning_js_1.SemanticType.OVERSCORE,
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semantic_meaning_js_1.SemanticType.UNDERSCORE
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];
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function rightMostUnit(node) {
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while (node) {
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if (node.getAttribute('role') === 'unit') {
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return true;
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}
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const tag = node.tagName;
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const children = XpathUtil.evalXPath('children/*', node);
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node = (SCRIPT_ELEMENTS.indexOf(tag) !== -1
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? children[0]
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: children[children.length - 1]);
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}
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return false;
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}
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function leftMostUnit(node) {
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while (node) {
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if (node.getAttribute('role') === 'unit') {
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return true;
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}
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const children = XpathUtil.evalXPath('children/*', node);
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node = children[0];
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}
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return false;
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}
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function oneLeft(node) {
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while (node) {
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if (node.tagName === 'number' && node.textContent === '1') {
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return [node];
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}
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if (node.tagName !== 'infixop' ||
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(node.getAttribute('role') !== 'multiplication' &&
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node.getAttribute('role') !== 'implicit')) {
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return [];
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}
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node = XpathUtil.evalXPath('children/*', node)[0];
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}
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return [];
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}
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