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 CaseLimit extends AbstractEnrichCase { static test(semantic) { if (!semantic.mathmlTree || !semantic.childNodes.length) { return false; } const mmlTag = DomUtil.tagName(semantic.mathmlTree); const type = semantic.type; return (((type === SemanticType.LIMUPPER || type === SemanticType.LIMLOWER) && (mmlTag === MMLTAGS.MSUBSUP || mmlTag === MMLTAGS.MUNDEROVER)) || (type === SemanticType.LIMBOTH && (mmlTag === MMLTAGS.MSUB || mmlTag === MMLTAGS.MUNDER || mmlTag === MMLTAGS.MSUP || mmlTag === MMLTAGS.MOVER))); } static walkTree_(node) { if (node) { EnrichMathml.walkTree(node); } } constructor(semantic) { super(semantic); this.mml = semantic.mathmlTree; } getMathml() { const children = this.semantic.childNodes; if (this.semantic.type !== SemanticType.LIMBOTH && this.mml.childNodes.length >= 3) { this.mml = EnrichMathml.introduceNewLayer([this.mml], this.semantic); } setAttributes(this.mml, this.semantic); if (!children[0].mathmlTree) { children[0].mathmlTree = this.semantic.mathmlTree; } children.forEach(CaseLimit.walkTree_); return this.mml; } }