本文整理汇总了TypeScript中@angular-devkit/schematics.UpdateRecorder.remove方法的典型用法代码示例。如果您正苦于以下问题:TypeScript UpdateRecorder.remove方法的具体用法?TypeScript UpdateRecorder.remove怎么用?TypeScript UpdateRecorder.remove使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类@angular-devkit/schematics.UpdateRecorder
的用法示例。
在下文中一共展示了UpdateRecorder.remove方法的4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: removePropertyInAstObject
export function removePropertyInAstObject(
recorder: UpdateRecorder,
node: JsonAstObject,
propertyName: string,
) {
// Find the property inside the object.
const propIdx = node.properties.findIndex(prop => prop.key.value === propertyName);
if (propIdx === -1) {
// There's nothing to remove.
return;
}
if (node.properties.length === 1) {
// This is a special case. Everything should be removed, including indentation.
recorder.remove(node.start.offset, node.end.offset - node.start.offset);
recorder.insertRight(node.start.offset, '{}');
return;
}
// The AST considers commas and indentation to be part of the preceding property.
// To get around messy comma and identation management, we can work over the range between
// two properties instead.
const previousProp = node.properties[propIdx - 1];
const targetProp = node.properties[propIdx];
const nextProp = node.properties[propIdx + 1];
let start, end;
if (previousProp) {
// Given the object below, and intending to remove the `m` property:
// "{\n \"a\": \"a\",\n \"m\": \"m\",\n \"z\": \"z\"\n}"
// ^---------------^
// Removing the range above results in:
// "{\n \"a\": \"a\",\n \"z\": \"z\"\n}"
start = previousProp.end;
end = targetProp.end;
} else {
// If there's no previousProp there is a nextProp, since we've specialcased the 1 length case.
// Given the object below, and intending to remove the `a` property:
// "{\n \"a\": \"a\",\n \"m\": \"m\",\n \"z\": \"z\"\n}"
// ^---------------^
// Removing the range above results in:
// "{\n \"m\": \"m\",\n \"z\": \"z\"\n}"
start = targetProp.start;
end = nextProp.start;
}
recorder.remove(start.offset, end.offset - start.offset);
if (!nextProp) {
recorder.insertRight(start.offset, '\n');
}
}
示例2: replacePropertyInAstObject
function replacePropertyInAstObject(
recorder: UpdateRecorder, node: JsonAstObject, propertyName: string, value: JsonValue,
indent: number) {
const property = findPropertyInAstObject(node, propertyName);
if (property === null) {
throw new Error(`Property ${propertyName} does not exist in JSON object`);
}
const {start, text} = property;
recorder.remove(start.offset, text.length);
const indentStr = '\n' +
' '.repeat(indent);
const content = JSON.stringify(value, null, ' ').replace(/\n/g, indentStr);
recorder.insertLeft(start.offset, content);
}
示例3: removeKeyValueInAstObject
export function removeKeyValueInAstObject(
recorder: UpdateRecorder, content: string, node: JsonAstObject, key: string) {
for (const [i, prop] of node.properties.entries()) {
if (prop.key.value === key) {
const start = prop.start.offset;
const end = prop.end.offset;
let length = end - start;
const match = content.slice(end).match(/[,\s]+/);
if (match) {
length += match.pop() !.length;
}
recorder.remove(start, length);
if (i === node.properties.length - 1) { // last property
let offset = 0;
while (/(,|\s)/.test(content.charAt(start - offset - 1))) {
offset++;
}
recorder.remove(start - offset, offset);
}
return;
}
}
}
示例4: recordQueryUsageTransformation
/**
* Transforms the query decorator by explicitly specifying the timing based on the
* determined timing. The changes will be added to the specified update recorder.
*/
function recordQueryUsageTransformation(
query: NgQueryDefinition, recorder: UpdateRecorder, timing: QueryTiming, printer: ts.Printer,
sourceFile: ts.SourceFile) {
const queryExpr = query.decorator.node.expression as ts.CallExpression;
const queryArguments = queryExpr.arguments;
const timingPropertyAssignment = ts.createPropertyAssignment(
'static', timing === QueryTiming.STATIC ? ts.createTrue() : ts.createFalse());
let newCallText = '';
// If the query decorator is already called with two arguments, we need to
// keep the existing options untouched and just add the new property if needed.
if (queryArguments.length === 2) {
const existingOptions = queryArguments[1] as ts.ObjectLiteralExpression;
// In case the options already contains a property for the "static" flag, we just
// skip this query and leave it untouched.
if (existingOptions.properties.some(
p => !!p.name && getPropertyNameText(p.name) === 'static')) {
return;
}
const updatedOptions = ts.updateObjectLiteral(
existingOptions, existingOptions.properties.concat(timingPropertyAssignment));
const updatedCall = ts.updateCall(
queryExpr, queryExpr.expression, queryExpr.typeArguments,
[queryArguments[0], updatedOptions]);
newCallText = printer.printNode(ts.EmitHint.Unspecified, updatedCall, sourceFile);
} else {
const newCall = ts.updateCall(
queryExpr, queryExpr.expression, queryExpr.typeArguments,
[queryArguments[0], ts.createObjectLiteral([timingPropertyAssignment])]);
newCallText = printer.printNode(ts.EmitHint.Unspecified, newCall, sourceFile);
}
recorder.remove(queryExpr.getStart(), queryExpr.getWidth());
recorder.insertRight(queryExpr.getStart(), newCallText);
}