本文整理汇总了TypeScript中vs/base/common/json.findNodeAtLocation函数的典型用法代码示例。如果您正苦于以下问题：TypeScript findNodeAtLocation函数的具体用法？TypeScript findNodeAtLocation怎么用？TypeScript findNodeAtLocation使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了findNodeAtLocation函数的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的TypeScript代码示例。
示例1: setProperty
export function setProperty(text: string, segments: Segment[], value: any, formattingOptions: FormattingOptions, getInsertionIndex?: (properties: string[]) => number) : Edit[] {
let lastSegment = segments.pop();
if (typeof lastSegment !== 'string') {
throw new Error('Last segment must be a property name');
}
let errors: ParseError[] = [];
let node = parseTree(text, errors);
if (segments.length > 0) {
node = findNodeAtLocation(node, segments);
if (node === void 0) {
throw new Error('Cannot find object');
}
}
if (node && node.type === 'object') {
let existing = findNodeAtLocation(node, [ lastSegment ]);
if (existing !== void 0) {
if (value === void 0) { // delete
let propertyIndex = node.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 = node.children[propertyIndex - 1];
removeBegin = previous.offset + previous.length;
} else {
removeBegin = node.offset + 1;
if (node.children.length > 1) {
// remove the comma of the next node
let next = node.children[1];
removeEnd = next.offset;
}
}
return withFormatting(text, { offset: removeBegin, length: removeEnd - removeBegin, content: '' }, formattingOptions);
} else {
// set value of existing property
return [{ offset: existing.offset, length: existing.length, content: JSON.stringify(value) }];
}
} else {
if (value === void 0) { // delete
throw new Error(`Property ${lastSegment} does not exist.`);
}
let newProperty = `${JSON.stringify(lastSegment)}: ${JSON.stringify(value)}`;
let index = getInsertionIndex ? getInsertionIndex(node.children.map(p => p.children[0].value)) : node.children.length;
let edit: Edit;
if (index > 0) {
let previous = node.children[index - 1];
edit = { offset: previous.offset + previous.length, length: 0, content: ',' + newProperty};
} else if (node.children.length === 0) {
edit = { offset: node.offset + 1, length: 0, content: newProperty};
} else {
edit = { offset: node.offset + 1, length: 0, content: newProperty + ','};
}
return withFormatting(text, edit, formattingOptions);
}
} else {
throw new Error('Path does not reference an object');
}
}示例2: assertNodeAtLocation
function assertNodeAtLocation(input: Node, segments: Segment[], expected: any) {
let actual = findNodeAtLocation(input, segments);
assert.deepEqual(actual ? getNodeValue(actual) : void 0, expected);
}示例3: setProperty
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 {
//.........这里部分代码省略.........