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vscode-react-native/src/common/error

src/common/error/errorHelper.ts

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17161993Meena Kunnathur Balakrishnan10 years ago1// Copyright (c) Microsoft Corporation. All rights reserved.
2// Licensed under the MIT license. See LICENSE file in the project root for details.
3
a289475bMeena Kunnathur Balakrishnan10 years ago4import * as path from "path";
190e393cMeena Kunnathur Balakrishnan10 years ago5import {InternalError, NestedError, InternalErrorLevel} from "./internalError";
17161993Meena Kunnathur Balakrishnan10 years ago6import {InternalErrorCode} from "./internalErrorCode";
7
8export class ErrorHelper {
a289475bMeena Kunnathur Balakrishnan10 years ago9private static errorStringsJsonLoc = path.resolve(__dirname, "..", "..", "..", "errorStrings", "errorStrings.json");
17161993Meena Kunnathur Balakrishnan10 years ago10public static getInternalError(errorCode: InternalErrorCode, ...optionalArgs: any[]): InternalError {
adaa8cc8Meena Kunnathur Balakrishnan10 years ago11let message = ErrorHelper.getErrorMessage(errorCode, ...optionalArgs);
17161993Meena Kunnathur Balakrishnan10 years ago12return new InternalError(<number> errorCode, message);
13}
14
190e393cMeena Kunnathur Balakrishnan10 years ago15public static getNestedError(innerError: Error, errorCode: InternalErrorCode, ...optionalArgs: any[]): NestedError {
a4a7e387Meena Kunnathur Balakrishnan10 years ago16let message = ErrorHelper.getErrorMessage(errorCode, ...optionalArgs);
17161993Meena Kunnathur Balakrishnan10 years ago17return new NestedError(<number> errorCode, message, innerError);
18}
19
190e393cMeena Kunnathur Balakrishnan10 years ago20public static wrapError(error: InternalError, innerError: Error): NestedError {
21return NestedError.getWrappedError(error, innerError);
22}
a4a7e387Meena Kunnathur Balakrishnan10 years ago23public static getWarning(message: string, ...optionalArgs: any[]): InternalError {
190e393cMeena Kunnathur Balakrishnan10 years ago24return new InternalError(-1, message, InternalErrorLevel.Warning);
25}
26
a4a7e387Meena Kunnathur Balakrishnan10 years ago27public static getNestedWarning(innerError: Error, message: string, ...optionalArgs: any[]): NestedError {
499fe4ebMeena Kunnathur Balakrishnan10 years ago28return new NestedError(-1, message, innerError, null /* extras */, InternalErrorLevel.Warning);
a4a7e387Meena Kunnathur Balakrishnan10 years ago29}
30
17161993Meena Kunnathur Balakrishnan10 years ago31private static getErrorMessage(errorCode: InternalErrorCode, ...optionalArgs: any[]): string {
a289475bMeena Kunnathur Balakrishnan10 years ago32let errorStrings = require (ErrorHelper.errorStringsJsonLoc);
adaa8cc8Meena Kunnathur Balakrishnan10 years ago33return ErrorHelper.formatErrorMessage(errorStrings[InternalErrorCode[errorCode]], ...optionalArgs);
17161993Meena Kunnathur Balakrishnan10 years ago34}
35
36private static formatErrorMessage(errorMessage: string, ...optionalArgs: any[]): string {
a4a7e387Meena Kunnathur Balakrishnan10 years ago37if (!errorMessage) {
38return errorMessage;
39}
40
41let result: string = <string> errorMessage;
42let args: string[] = ErrorHelper.getOptionalArgsArrayFromFunctionCall(arguments, 1);
43if (args) {
cdf34447digeff10 years ago44for (let i: number = 0; i < args.length; i++) {
a4a7e387Meena Kunnathur Balakrishnan10 years ago45result = result.replace(new RegExp("\\{" + i + "\\}", "g"), args[i]);
17161993Meena Kunnathur Balakrishnan10 years ago46}
a4a7e387Meena Kunnathur Balakrishnan10 years ago47}
17161993Meena Kunnathur Balakrishnan10 years ago48
a4a7e387Meena Kunnathur Balakrishnan10 years ago49return result;
17161993Meena Kunnathur Balakrishnan10 years ago50}
adaa8cc8Meena Kunnathur Balakrishnan10 years ago51
a4a7e387Meena Kunnathur Balakrishnan10 years ago52private static getOptionalArgsArrayFromFunctionCall(functionArguments: IArguments, startIndex: number): any[] {
adaa8cc8Meena Kunnathur Balakrishnan10 years ago53if (functionArguments.length <= startIndex) {
54return null;
55}
56
57if (Array.isArray(functionArguments[startIndex])) {
58return functionArguments[startIndex];
59}
60
61return Array.prototype.slice.apply(functionArguments, [startIndex]);
62}
17161993Meena Kunnathur Balakrishnan10 years ago63}