97 lines
3.2 KiB
TypeScript
97 lines
3.2 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {CompileTokenMetadata} from './compile_metadata';
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import {isArray, isBlank, isPresent, isPrimitive, isStrictStringMap} from './facade/lang';
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import * as o from './output/output_ast';
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export const MODULE_SUFFIX = '';
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var CAMEL_CASE_REGEXP = /([A-Z])/g;
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export function camelCaseToDashCase(input: string): string {
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return input.replace(CAMEL_CASE_REGEXP, (...m: any[]) => '-' + m[1].toLowerCase());
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}
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export function splitAtColon(input: string, defaultValues: string[]): string[] {
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return _splitAt(input, ':', defaultValues);
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}
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export function splitAtPeriod(input: string, defaultValues: string[]): string[] {
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return _splitAt(input, '.', defaultValues);
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}
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function _splitAt(input: string, character: string, defaultValues: string[]): string[] {
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const characterIndex = input.indexOf(character);
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if (characterIndex == -1) return defaultValues;
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return [input.slice(0, characterIndex).trim(), input.slice(characterIndex + 1).trim()];
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}
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export function sanitizeIdentifier(name: string): string {
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return name.replace(/\W/g, '_');
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}
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export function visitValue(value: any, visitor: ValueVisitor, context: any): any {
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if (isArray(value)) {
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return visitor.visitArray(<any[]>value, context);
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} else if (isStrictStringMap(value)) {
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return visitor.visitStringMap(<{[key: string]: any}>value, context);
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} else if (isBlank(value) || isPrimitive(value)) {
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return visitor.visitPrimitive(value, context);
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} else {
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return visitor.visitOther(value, context);
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}
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}
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export interface ValueVisitor {
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visitArray(arr: any[], context: any): any;
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visitStringMap(map: {[key: string]: any}, context: any): any;
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visitPrimitive(value: any, context: any): any;
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visitOther(value: any, context: any): any;
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}
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export class ValueTransformer implements ValueVisitor {
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visitArray(arr: any[], context: any): any {
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return arr.map(value => visitValue(value, this, context));
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}
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visitStringMap(map: {[key: string]: any}, context: any): any {
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var result: {[key: string]: any} = {};
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Object.keys(map).forEach(key => { result[key] = visitValue(map[key], this, context); });
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return result;
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}
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visitPrimitive(value: any, context: any): any { return value; }
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visitOther(value: any, context: any): any { return value; }
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}
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export function assetUrl(pkg: string, path: string = null, type: string = 'src'): string {
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if (path == null) {
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return `asset:@angular/lib/${pkg}/index`;
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} else {
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return `asset:@angular/lib/${pkg}/src/${path}`;
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}
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}
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export function createDiTokenExpression(token: CompileTokenMetadata): o.Expression {
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if (isPresent(token.value)) {
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return o.literal(token.value);
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} else if (token.identifierIsInstance) {
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return o.importExpr(token.identifier)
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.instantiate([], o.importType(token.identifier, [], [o.TypeModifier.Const]));
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} else {
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return o.importExpr(token.identifier);
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}
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}
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export class SyncAsyncResult<T> {
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constructor(public syncResult: T, public asyncResult: Promise<T> = null) {
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if (!asyncResult) {
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this.asyncResult = Promise.resolve(syncResult);
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}
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}
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}
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