typesxml
Version:
Open source XML library written in TypeScript
58 lines • 1.97 kB
JavaScript
/*******************************************************************************
* Copyright (c) 2023-2026 Maxprograms.
*
* This program and the accompanying materials
* are made available under the terms of the Eclipse Public License 1.0
* which accompanies this distribution, and is available at
* https://www.eclipse.org/org/documents/epl-v10.html
*
* Contributors:
* Maxprograms - initial API and implementation
*******************************************************************************/
import { XMLUtils } from '../XMLUtils.js';
import { DTDElementNameParticle } from './DTDElementNameParticle.js';
export class DTDSequenceModel {
cardinality = '';
children = [];
constructor(children) {
if (children)
this.children = children;
}
getType() {
return 'sequence';
}
addChild(child) {
this.children.push(child);
}
getChildren() {
return this.children;
}
validate() {
// Cardinality must be '', '*', '+', or '?'
if (this.cardinality && !['*', '+', '?'].includes(this.cardinality)) {
return false;
}
// At least one child required for valid model
if (this.children.length === 0) {
return false;
}
// Validate each child and its name if it's an element particle
for (const child of this.children) {
if (!child.validate()) {
return false;
}
// Only check name if child is DTDElementNameParticle
if (child instanceof DTDElementNameParticle) {
if (!XMLUtils.isValidXMLName(child.getName())) {
return false;
}
}
}
return true;
}
toBNF() {
let bnf = this.children.map(child => child.toBNF()).join(', ');
return bnf + (this.cardinality ? this.cardinality : '');
}
}
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