SQL Operations Studio Public Preview 1 (0.23) release source code

src/vs/base/common/jsonEdit.ts

@@ -0,0 +1,142 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the Source EULA. See License.txt in the project root for license information.
+ *--------------------------------------------------------------------------------------------*/
+'use strict';
+
+import { ParseError, Node, parseTree, findNodeAtLocation, JSONPath, Segment } from 'vs/base/common/json';
+import { Edit, FormattingOptions, format, applyEdit } from 'vs/base/common/jsonFormatter';
+
+export function removeProperty(text: string, path: JSONPath, formattingOptions: FormattingOptions): Edit[] {
+	return setProperty(text, path, void 0, formattingOptions);
+}
+
+export function setProperty(text: string, path: JSONPath, value: any, formattingOptions: FormattingOptions, getInsertionIndex?: (properties: string[]) => number): Edit[] {
+	let errors: ParseError[] = [];
+	let root = parseTree(text, errors);
+	let parent: Node = void 0;
+
+	let lastSegment: Segment = void 0;
+	while (path.length > 0) {
+		lastSegment = path.pop();
+		parent = findNodeAtLocation(root, path);
+		if (parent === void 0 && value !== void 0) {
+			if (typeof lastSegment === 'string') {
+				value = { [lastSegment]: value };
+			} else {
+				value = [value];
+			}
+		} else {
+			break;
+		}
+	}
+
+	if (!parent) {
+		// empty document
+		if (value === void 0) { // delete
+			throw new Error('Can not delete in empty document');
+		}
+		return withFormatting(text, { offset: root ? root.offset : 0, length: root ? root.length : 0, content: JSON.stringify(value) }, formattingOptions);
+	} else if (parent.type === 'object' && typeof lastSegment === 'string') {
+		let existing = findNodeAtLocation(parent, [lastSegment]);
+		if (existing !== void 0) {
+			if (value === void 0) { // delete
+				let propertyIndex = parent.children.indexOf(existing.parent);
+				let removeBegin: number;
+				let removeEnd = existing.parent.offset + existing.parent.length;
+				if (propertyIndex > 0) {
+					// remove the comma of the previous node
+					let previous = parent.children[propertyIndex - 1];
+					removeBegin = previous.offset + previous.length;
+				} else {
+					removeBegin = parent.offset + 1;
+					if (parent.children.length > 1) {
+						// remove the comma of the next node
+						let next = parent.children[1];
+						removeEnd = next.offset;
+					}
+				}
+				return withFormatting(text, { offset: removeBegin, length: removeEnd - removeBegin, content: '' }, formattingOptions);
+			} else {
+				// set value of existing property
+				return withFormatting(text, { offset: existing.offset, length: existing.length, content: JSON.stringify(value) }, formattingOptions);
+			}
+		} else {
+			if (value === void 0) { // delete
+				return []; // property does not exist, nothing to do
+			}
+			let newProperty = `${JSON.stringify(lastSegment)}: ${JSON.stringify(value)}`;
+			let index = getInsertionIndex ? getInsertionIndex(parent.children.map(p => p.children[0].value)) : parent.children.length;
+			let edit: Edit;
+			if (index > 0) {
+				let previous = parent.children[index - 1];
+				edit = { offset: previous.offset + previous.length, length: 0, content: ',' + newProperty };
+			} else if (parent.children.length === 0) {
+				edit = { offset: parent.offset + 1, length: 0, content: newProperty };
+			} else {
+				edit = { offset: parent.offset + 1, length: 0, content: newProperty + ',' };
+			}
+			return withFormatting(text, edit, formattingOptions);
+		}
+	} else if (parent.type === 'array' && typeof lastSegment === 'number') {
+		let insertIndex = lastSegment;
+		if (insertIndex === -1) {
+			// Insert
+			let newProperty = `${JSON.stringify(value)}`;
+			let edit: Edit;
+			if (parent.children.length === 0) {
+				edit = { offset: parent.offset + 1, length: 0, content: newProperty };
+			} else {
+				let previous = parent.children[parent.children.length - 1];
+				edit = { offset: previous.offset + previous.length, length: 0, content: ',' + newProperty };
+			}
+			return withFormatting(text, edit, formattingOptions);
+		} else {
+			if (value === void 0 && parent.children.length >= 0) {
+				//Removal
+				let removalIndex = lastSegment;
+				let toRemove = parent.children[removalIndex];
+				let edit: Edit;
+				if (parent.children.length === 1) {
+					// only item
+					edit = { offset: parent.offset + 1, length: parent.length - 2, content: '' };
+				} else if (parent.children.length - 1 === removalIndex) {
+					// last item
+					let previous = parent.children[removalIndex - 1];
+					let offset = previous.offset + previous.length;
+					let parentEndOffset = parent.offset + parent.length;
+					edit = { offset, length: parentEndOffset - 2 - offset, content: '' };
+				} else {
+					edit = { offset: toRemove.offset, length: parent.children[removalIndex + 1].offset - toRemove.offset, content: '' };
+				}
+				return withFormatting(text, edit, formattingOptions);
+			} else {
+				throw new Error('Array modification not supported yet');
+			}
+		}
+	} else {
+		throw new Error(`Can not add ${typeof lastSegment !== 'number' ? 'index' : 'property'} to parent of type ${parent.type}`);
+	}
+}
+
+function withFormatting(text: string, edit: Edit, formattingOptions: FormattingOptions): Edit[] {
+	// apply the edit
+	let newText = applyEdit(text, edit);
+
+	// format the new text
+	let begin = edit.offset;
+	let end = edit.offset + edit.content.length;
+	let edits = format(newText, { offset: begin, length: end - begin }, formattingOptions);
+
+	// apply the formatting edits and track the begin and end offsets of the changes
+	for (let i = edits.length - 1; i >= 0; i--) {
+		let edit = edits[i];
+		newText = applyEdit(newText, edit);
+		begin = Math.min(begin, edit.offset);
+		end = Math.max(end, edit.offset + edit.length);
+		end += edit.content.length - edit.length;
+	}
+	// create a single edit with all changes
+	let editLength = text.length - (newText.length - end) - begin;
+	return [{ offset: begin, length: editLength, content: newText.substring(begin, end) }];
+}