49 lines
2.3 KiB
JavaScript
49 lines
2.3 KiB
JavaScript
import * as DomUtil from '../common/dom_util.js';
|
|
import { SemanticRole, SemanticType } from '../semantic_tree/semantic_meaning.js';
|
|
import { SemanticSkeleton } from '../semantic_tree/semantic_skeleton.js';
|
|
import { MMLTAGS } from '../semantic_tree/semantic_util.js';
|
|
import { CaseMultiindex } from './case_multiindex.js';
|
|
import * as EnrichMathml from './enrich_mathml.js';
|
|
import { setAttributes, Attribute } from './enrich_attr.js';
|
|
export class CaseMultiscripts extends CaseMultiindex {
|
|
static test(semantic) {
|
|
if (!semantic.mathmlTree) {
|
|
return false;
|
|
}
|
|
const mmlTag = DomUtil.tagName(semantic.mathmlTree);
|
|
return (mmlTag === MMLTAGS.MMULTISCRIPTS &&
|
|
(semantic.type === SemanticType.SUPERSCRIPT ||
|
|
semantic.type === SemanticType.SUBSCRIPT));
|
|
}
|
|
constructor(semantic) {
|
|
super(semantic);
|
|
}
|
|
getMathml() {
|
|
setAttributes(this.mml, this.semantic);
|
|
let baseSem, rsup, rsub;
|
|
if (this.semantic.childNodes[0] &&
|
|
this.semantic.childNodes[0].role === SemanticRole.SUBSUP) {
|
|
const ignore = this.semantic.childNodes[0];
|
|
baseSem = ignore.childNodes[0];
|
|
rsup = CaseMultiindex.multiscriptIndex(this.semantic.childNodes[1]);
|
|
rsub = CaseMultiindex.multiscriptIndex(ignore.childNodes[1]);
|
|
const collapsed = [this.semantic.id, [ignore.id, baseSem.id, rsub], rsup];
|
|
EnrichMathml.addCollapsedAttribute(this.mml, collapsed);
|
|
this.mml.setAttribute(Attribute.TYPE, ignore.role);
|
|
this.completeMultiscript(SemanticSkeleton.interleaveIds(rsub, rsup), []);
|
|
}
|
|
else {
|
|
baseSem = this.semantic.childNodes[0];
|
|
rsup = CaseMultiindex.multiscriptIndex(this.semantic.childNodes[1]);
|
|
const collapsed = [this.semantic.id, baseSem.id, rsup];
|
|
EnrichMathml.addCollapsedAttribute(this.mml, collapsed);
|
|
}
|
|
const childIds = SemanticSkeleton.collapsedLeafs(rsub || [], rsup);
|
|
const base = EnrichMathml.walkTree(baseSem);
|
|
EnrichMathml.getInnerNode(base).setAttribute(Attribute.PARENT, this.semantic.id.toString());
|
|
childIds.unshift(baseSem.id);
|
|
this.mml.setAttribute(Attribute.CHILDREN, childIds.join(','));
|
|
return this.mml;
|
|
}
|
|
}
|