last commit again

src/expressions/xquery-update/TransformExpression.ts

@@ -1,5 +1,10 @@
 import IDocumentWriter from '../../documentWriter/IDocumentWriter';
-import { ConcreteElementNode, ConcreteNode, NODE_TYPES } from '../../domFacade/ConcreteNode';
+import {
+	ConcreteDocumentNode,
+	ConcreteElementNode,
+	ConcreteNode,
+	NODE_TYPES
+} from '../../domFacade/ConcreteNode';
 import IWrappingDomFacade from '../../domFacade/IWrappingDomFacade';
 import INodesFactory from '../../nodesFactory/INodesFactory';
 import createNodeValue from '../dataTypes/createNodeValue';
@@ -43,7 +48,6 @@ function deepCloneNode(
 						attr.value
 					)
 				);
-
 			for (const child of domFacade.getChildNodes(node)) {
 				const descendant = deepCloneNode(child, domFacade, nodesFactory, documentWriter);
 				documentWriter.insertBefore(cloneElem as ConcreteElementNode, descendant, null);
@@ -53,14 +57,21 @@ function deepCloneNode(
 			const cloneAttr = nodesFactory.createAttributeNS(node.namespaceURI, node.nodeName);
 			cloneAttr.value = node.value;
 			return cloneAttr;
-		case NODE_TYPES.TEXT_NODE:
-			return nodesFactory.createTextNode(node.data);
-		case NODE_TYPES.PROCESSING_INSTRUCTION_NODE:
-			return nodesFactory.createProcessingInstruction(node.target, node.data);
-		case NODE_TYPES.COMMENT_NODE:
-			return nodesFactory.createComment(node.data);
 		case NODE_TYPES.CDATA_SECTION_NODE:
 			return nodesFactory.createCDATASection(node.data);
+		case NODE_TYPES.COMMENT_NODE:
+			return nodesFactory.createComment(node.data);
+		case NODE_TYPES.DOCUMENT_NODE:
+			const cloneDoc = nodesFactory.createDocument();
+			for (const child of domFacade.getChildNodes(node)) {
+				const descendant = deepCloneNode(child, domFacade, nodesFactory, documentWriter);
+				documentWriter.insertBefore(cloneDoc as ConcreteDocumentNode, descendant, null);
+			}
+			return cloneDoc;
+		case NODE_TYPES.PROCESSING_INSTRUCTION_NODE:
+			return nodesFactory.createProcessingInstruction(node.target, node.data);
+		case NODE_TYPES.TEXT_NODE:
+			return nodesFactory.createTextNode(node.data);
 	}
 }
 

src/nodesFactory/DomBackedNodesFactory.ts

@@ -48,6 +48,15 @@ export default class DomBackedNodesFactory implements INodesFactory {
 		return this._documentNode.createComment(contents);
 	}
 
+	public createDocument() {
+		if (!this._documentNode) {
+			throw new Error(
+				'Please pass a node factory if an XQuery script uses node constructors'
+			);
+		}
+		return this._documentNode.implementation.createDocument(null, null, null);
+	}
+
 	public createElementNS(namespaceURI, name) {
 		if (!this._documentNode) {
 			throw new Error(

src/nodesFactory/INodesFactory.ts

@@ -5,6 +5,8 @@ export default interface INodesFactory {
 
 	createComment(contents: string): Comment;
 
+	createDocument(): Document;
+
 	createElementNS(namespaceURI: string, name: string): Element;
 
 	createProcessingInstruction(target: string, data: string): ProcessingInstruction;

src/nodesFactory/wrapExternalNodesFactory.ts

@@ -19,6 +19,10 @@ class WrappingNodesFactory implements INodesFactory {
 		return this._externalNodesFactory['createComment'](contents);
 	}
 
+	public createDocument() {
+		return this._externalNodesFactory['createDocument']();
+	}
+
 	public createElementNS(namespaceURI, name) {
 		return this._externalNodesFactory['createElementNS'](namespaceURI, name);
 	}

test/specs/parsing/xquery-updating/evaluateUpdatingExpression.tests.ts

@@ -84,7 +84,7 @@ describe('evaluateUpdatingExpression', () => {
 					},
 					createDocument: () => {
 						createDocumentCalled = true;
-						return documentNode.createDocument();
+						return documentNode.implementation.createDocument();
 					},
 					createElementNS: (namespaceURI, localName) => {
 						createElementNSCalled = true;