253 lines
9.1 KiB
JavaScript
253 lines
9.1 KiB
JavaScript
import { AuditoryDescription } from '../audio/auditory_description.js';
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import { Span } from '../audio/span.js';
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import * as DomUtil from '../common/dom_util.js';
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import * as XpathUtil from '../common/xpath_util.js';
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import { Grammar, correctFont } from '../rule_engine/grammar.js';
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import { Engine } from '../common/engine.js';
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import { register, activate } from '../semantic_tree/semantic_annotations.js';
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import { SemanticVisitor } from '../semantic_tree/semantic_annotator.js';
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import { SemanticRole, SemanticType } from '../semantic_tree/semantic_meaning.js';
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import { LOCALE } from '../l10n/locale.js';
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import * as MathspeakUtil from './mathspeak_util.js';
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import { contentIterator as suCI } from '../rule_engine/store_util.js';
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export function openingFraction(node) {
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const depth = MathspeakUtil.fractionNestingDepth(node);
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return Span.singleton(new Array(depth).join(LOCALE.MESSAGES.MS.FRACTION_REPEAT) +
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LOCALE.MESSAGES.MS.FRACTION_START);
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}
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export function closingFraction(node) {
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const depth = MathspeakUtil.fractionNestingDepth(node);
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return Span.singleton(new Array(depth).join(LOCALE.MESSAGES.MS.FRACTION_REPEAT) +
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LOCALE.MESSAGES.MS.FRACTION_END);
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}
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export function overFraction(node) {
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const depth = MathspeakUtil.fractionNestingDepth(node);
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return Span.singleton(new Array(depth).join(LOCALE.MESSAGES.MS.FRACTION_REPEAT) +
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LOCALE.MESSAGES.MS.FRACTION_OVER);
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}
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export function overBevelledFraction(node) {
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const depth = MathspeakUtil.fractionNestingDepth(node);
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return Span.singleton(new Array(depth).join(LOCALE.MESSAGES.MS.FRACTION_REPEAT) +
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'⠸' +
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LOCALE.MESSAGES.MS.FRACTION_OVER);
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}
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export function hyperFractionBoundary(node) {
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return LOCALE.MESSAGES.regexp.HYPER ===
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MathspeakUtil.fractionNestingDepth(node).toString()
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? [node]
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: [];
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}
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function nestedRadical(node, postfix) {
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const depth = radicalNestingDepth(node);
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return Span.singleton(depth === 1
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? postfix
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: new Array(depth).join(LOCALE.MESSAGES.MS.NESTED) + postfix);
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}
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function radicalNestingDepth(node, opt_depth) {
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const depth = opt_depth || 0;
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if (!node.parentNode) {
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return depth;
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}
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return radicalNestingDepth(node.parentNode, node.tagName === 'root' || node.tagName === 'sqrt' ? depth + 1 : depth);
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}
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export function openingRadical(node) {
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return nestedRadical(node, LOCALE.MESSAGES.MS.STARTROOT);
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}
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export function closingRadical(node) {
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return nestedRadical(node, LOCALE.MESSAGES.MS.ENDROOT);
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}
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export function indexRadical(node) {
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return nestedRadical(node, LOCALE.MESSAGES.MS.ROOTINDEX);
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}
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function enlargeFence(text) {
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const start = '⠠';
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if (text.length === 1) {
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return start + text;
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}
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const neut = '⠳';
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const split = text.split('');
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if (split.every(function (x) {
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return x === neut;
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})) {
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return start + split.join(start);
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}
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return text.slice(0, -1) + start + text.slice(-1);
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}
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Grammar.getInstance().setCorrection('enlargeFence', enlargeFence);
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const NUMBER_PROPAGATORS = [
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SemanticType.MULTIREL,
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SemanticType.RELSEQ,
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SemanticType.APPL,
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SemanticType.ROW,
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SemanticType.LINE
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];
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const NUMBER_INHIBITORS = [
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SemanticType.SUBSCRIPT,
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SemanticType.SUPERSCRIPT,
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SemanticType.OVERSCORE,
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SemanticType.UNDERSCORE
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];
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function checkParent(node, info) {
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const parent = node.parent;
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if (!parent) {
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return false;
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}
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const type = parent.type;
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if (NUMBER_PROPAGATORS.indexOf(type) !== -1 ||
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(type === SemanticType.PREFIXOP &&
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parent.role === SemanticRole.NEGATIVE &&
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!info.script &&
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!info.enclosed) ||
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(type === SemanticType.PREFIXOP &&
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parent.role === SemanticRole.GEOMETRY)) {
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return true;
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}
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if (type === SemanticType.PUNCTUATED) {
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if (!info.enclosed || parent.role === SemanticRole.TEXT) {
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return true;
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}
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}
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return false;
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}
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function propagateNumber(node, info) {
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if (!node.childNodes.length) {
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if (checkParent(node, info)) {
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info.number = true;
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info.script = false;
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info.enclosed = false;
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}
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return [
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info['number'] ? 'number' : '',
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{ number: false, enclosed: info.enclosed, script: info.script }
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];
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}
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if (NUMBER_INHIBITORS.indexOf(node.type) !== -1) {
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info.script = true;
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}
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if (node.type === SemanticType.FENCED) {
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info.number = false;
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info.enclosed = true;
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return ['', info];
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}
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if (node.type === SemanticType.PREFIXOP &&
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node.role !== SemanticRole.GEOMETRY &&
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node.role !== SemanticRole.NEGATIVE) {
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info.number = false;
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return ['', info];
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}
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if (checkParent(node, info)) {
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info.number = true;
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info.enclosed = false;
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}
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return ['', info];
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}
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register(new SemanticVisitor('nemeth', 'number', propagateNumber, { number: true }));
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function annotateDepth(node) {
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if (!node.parent) {
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return [1];
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}
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const depth = parseInt(node.parent.annotation['depth'][0]);
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return [depth + 1];
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}
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register(new SemanticVisitor('depth', 'depth', annotateDepth));
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activate('depth', 'depth');
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export function relationIterator(nodes, context) {
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var _a;
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const childNodes = nodes.slice(0);
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let first = true;
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const parentNode = nodes[0].parentNode.parentNode;
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const match = (_a = parentNode.getAttribute('annotation')) === null || _a === void 0 ? void 0 : _a.match(/depth:(\d+)/);
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const depth = match ? match[1] : '';
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let contentNodes;
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if (nodes.length > 0) {
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contentNodes = XpathUtil.evalXPath('./content/*', parentNode);
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}
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else {
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contentNodes = [];
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}
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return function () {
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const content = contentNodes.shift();
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const leftChild = childNodes.shift();
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const rightChild = childNodes[0];
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const contextDescr = context
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? [AuditoryDescription.create({ text: context }, { translate: true })]
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: [];
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if (!content) {
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return contextDescr;
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}
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const base = leftChild
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? MathspeakUtil.nestedSubSuper(leftChild, '', {
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sup: LOCALE.MESSAGES.MS.SUPER,
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sub: LOCALE.MESSAGES.MS.SUB
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})
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: '';
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const left = (leftChild && DomUtil.tagName(leftChild) !== 'EMPTY') ||
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(first && parentNode && parentNode.previousSibling)
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? [
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AuditoryDescription.create({ text: LOCALE.MESSAGES.regexp.SPACE + base }, {})
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]
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: [];
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const right = (rightChild && DomUtil.tagName(rightChild) !== 'EMPTY') ||
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(!contentNodes.length && parentNode && parentNode.nextSibling)
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? [
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AuditoryDescription.create({ text: LOCALE.MESSAGES.regexp.SPACE }, {})
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]
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: [];
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const descrs = Engine.evaluateNode(content);
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descrs.unshift(new AuditoryDescription({ text: '', layout: `beginrel${depth}` }));
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descrs.push(new AuditoryDescription({ text: '', layout: `endrel${depth}` }));
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first = false;
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return contextDescr.concat(left, descrs, right);
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};
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}
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export function implicitIterator(nodes, context) {
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const childNodes = nodes.slice(0);
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let contentNodes;
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if (nodes.length > 0) {
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contentNodes = XpathUtil.evalXPath('../../content/*', nodes[0]);
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}
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else {
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contentNodes = [];
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}
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return function () {
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const leftChild = childNodes.shift();
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const rightChild = childNodes[0];
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const content = contentNodes.shift();
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const contextDescr = context
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? [AuditoryDescription.create({ text: context }, { translate: true })]
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: [];
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if (!content) {
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return contextDescr;
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}
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const left = leftChild && DomUtil.tagName(leftChild) === 'NUMBER';
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const right = rightChild && DomUtil.tagName(rightChild) === 'NUMBER';
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return contextDescr.concat(left && right && content.getAttribute('role') === SemanticRole.SPACE
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? [
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AuditoryDescription.create({ text: LOCALE.MESSAGES.regexp.SPACE }, {})
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]
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: []);
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};
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}
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function ignoreEnglish(text) {
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return correctFont(text, LOCALE.ALPHABETS.languagePrefix.english);
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}
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Grammar.getInstance().setCorrection('ignoreEnglish', ignoreEnglish);
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export function contentIterator(nodes, context) {
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var _a;
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const func = suCI(nodes, context);
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const parentNode = nodes[0].parentNode.parentNode;
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const match = (_a = parentNode.getAttribute('annotation')) === null || _a === void 0 ? void 0 : _a.match(/depth:(\d+)/);
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const depth = match ? match[1] : '';
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return function () {
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const descrs = func();
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descrs.unshift(new AuditoryDescription({ text: '', layout: `beginrel${depth}` }));
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descrs.push(new AuditoryDescription({ text: '', layout: `endrel${depth}` }));
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return descrs;
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};
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}
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function literal(text) {
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const evalStr = (e) => Engine.getInstance().evaluator(e, Engine.getInstance().dynamicCstr);
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return Array.from(text).map(evalStr).join('');
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}
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Grammar.getInstance().setCorrection('literal', literal);
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