annotate Implab/Safe.cs @ 89:ce0171cacec4 v2

improved performance of a chained map operation
author cin
date Wed, 08 Oct 2014 02:19:45 +0400
parents 790e8a997d30
children efcb076407a7
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1 using System;
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2 using System.Collections.Generic;
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3 using System.Linq;
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4 using System.Text;
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5 using System.Text.RegularExpressions;
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6 using System.Diagnostics;
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8 namespace Implab
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9 {
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10 public static class Safe
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11 {
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12 public static void ArgumentMatch(string param, string name, Regex rx) {
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13 if (rx == null)
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14 throw new ArgumentNullException("rx");
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15 if (!rx.IsMatch(param))
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16 throw new ArgumentException(String.Format("A prameter value must match {0}", rx), name);
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17 }
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18
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19 public static void ArgumentNotEmpty(string param, string name) {
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20 if (String.IsNullOrEmpty(param))
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21 throw new ArgumentException("A parameter can't be empty", name);
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22 }
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23
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24 public static void ArgumentNotNull(object param, string name) {
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25 if (param == null)
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26 throw new ArgumentNullException(name);
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27 }
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29 public static void ArgumentInRange(int arg, int min, int max, string name) {
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30 if (arg < min || arg > max)
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31 throw new ArgumentOutOfRangeException(name);
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32 }
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33
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34 public static void Dispose<T>(T obj) where T : class
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35 {
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36 var disp = obj as IDisposable;
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37 if (disp != null)
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38 disp.Dispose();
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39 }
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41 [DebuggerStepThrough]
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42 public static IPromise<T> GuargPromise<T>(Func<T> action) {
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43 ArgumentNotNull(action, "action");
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44
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45 var p = new Promise<T>();
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46 try {
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47 p.Resolve(action());
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48 } catch (Exception err) {
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49 p.Reject(err);
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50 }
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52 return p;
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53 }
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55 [DebuggerStepThrough]
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56 public static IPromise<T> GuardPromise<T>(Func<IPromise<T>> action) {
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57 ArgumentNotNull(action, "action");
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58
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59 try {
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60 return action();
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61 } catch (Exception err) {
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62 return Promise<T>.ExceptionToPromise(err);
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63 }
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64 }
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66 }