speech-rule-engine
Version:
A standalone speech rule engine for XML structures, based on the original engine from ChromeVox.
42 lines (41 loc) • 1.78 kB
JavaScript
import * as DomUtil from '../common/dom_util.js';
import { SemanticType } from '../semantic_tree/semantic_meaning.js';
import { MMLTAGS } from '../semantic_tree/semantic_util.js';
import { AbstractEnrichCase } from './abstract_enrich_case.js';
import * as EnrichMathml from './enrich_mathml.js';
import { setAttributes } from './enrich_attr.js';
export class CaseTable extends AbstractEnrichCase {
static test(semantic) {
return (semantic.type === SemanticType.MATRIX ||
semantic.type === SemanticType.VECTOR ||
semantic.type === SemanticType.CASES);
}
constructor(semantic) {
super(semantic);
this.inner = [];
this.mml = semantic.mathmlTree;
}
getMathml() {
const lfence = EnrichMathml.cloneContentNode(this.semantic.contentNodes[0]);
const rfence = this.semantic.contentNodes[1]
? EnrichMathml.cloneContentNode(this.semantic.contentNodes[1])
: null;
this.inner = this.semantic.childNodes.map(EnrichMathml.walkTree);
if (!this.mml) {
this.mml = EnrichMathml.introduceNewLayer([lfence].concat(this.inner, [rfence]), this.semantic);
}
else if (DomUtil.tagName(this.mml) === MMLTAGS.MFENCED) {
const children = this.mml.childNodes;
this.mml.insertBefore(lfence, children[0] || null);
rfence && this.mml.appendChild(rfence);
this.mml = EnrichMathml.rewriteMfenced(this.mml);
}
else {
const newChildren = [lfence, this.mml];
rfence && newChildren.push(rfence);
this.mml = EnrichMathml.introduceNewLayer(newChildren, this.semantic);
}
setAttributes(this.mml, this.semantic);
return this.mml;
}
}