annotate Implab/Safe.cs @ 125:f803565868a4 v2

improved performance of promises
author cin
date Thu, 15 Jan 2015 12:09:20 +0300
parents 62d2f1e98c4e
children f7b2b8bfbb8c
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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 value, string paramName, 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(value))
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16 throw new ArgumentException(String.Format("The prameter value must match {0}", rx), paramName);
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17 }
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18
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19 public static void ArgumentNotEmpty(string value, string paramName) {
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20 if (String.IsNullOrEmpty(value))
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21 throw new ArgumentException("The parameter can't be empty", paramName);
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22 }
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23
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24 public static void ArgumentNotEmpty<T>(T[] value, string paramName) {
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25 if (value == null || value.Length == 0)
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26 throw new ArgumentException("The array must be not emty", paramName);
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27 }
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29 public static void ArgumentNotNull(object value, string paramName) {
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30 if (value == null)
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31 throw new ArgumentNullException(paramName);
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32 }
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33
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34 public static void ArgumentInRange(int value, int min, int max, string paramName) {
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35 if (value < min || value > max)
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36 throw new ArgumentOutOfRangeException(paramName);
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37 }
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39 public static void Dispose<T>(T obj) where T : class
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40 {
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41 var disp = obj as IDisposable;
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42 if (disp != null)
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43 disp.Dispose();
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44 }
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45
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46 [DebuggerStepThrough]
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47 public static IPromise<T> InvokePromise<T>(Func<T> action) {
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48 ArgumentNotNull(action, "action");
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49
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50 var p = new Promise<T>();
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51 try {
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52 p.Resolve(action());
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53 } catch (Exception err) {
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54 p.Reject(err);
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55 }
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57 return p;
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58 }
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60 [DebuggerStepThrough]
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61 public static IPromise InvokePromise(Action action) {
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62 ArgumentNotNull(action, "action");
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63
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64 var p = new Promise();
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65 try {
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66 action();
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67 p.Resolve();
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68 } catch (Exception err) {
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69 p.Reject(err);
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70 }
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71
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72 return p;
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73 }
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74
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75 [DebuggerStepThrough]
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76 public static IPromise<T> InvokePromise<T>(Func<IPromise<T>> action) {
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77 ArgumentNotNull(action, "action");
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79 try {
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80 return action() ?? Promise<T>.ExceptionToPromise(new Exception("The action returned null"));
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81 } catch (Exception err) {
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82 return Promise<T>.ExceptionToPromise(err);
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83 }
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84 }
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85 }
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86 }