wasSharp – Blame information for rev 19
?pathlinks?
Rev | Author | Line No. | Line |
---|---|---|---|
2 | zed | 1 | /////////////////////////////////////////////////////////////////////////// |
2 | // Copyright (C) Wizardry and Steamworks 2013 - License: GNU GPLv3 // |
||
3 | // Please see: http://www.gnu.org/licenses/gpl.html for legal details, // |
||
4 | // rights of fair usage, the disclaimer and warranty conditions. // |
||
5 | /////////////////////////////////////////////////////////////////////////// |
||
6 | |||
7 | using System; |
||
8 | using System.Collections.Generic; |
||
9 | using System.Linq; |
||
10 | using System.Reflection; |
||
11 | |||
12 | namespace wasSharp |
||
13 | { |
||
7 | office | 14 | public static class Reflection |
2 | zed | 15 | { |
16 | /////////////////////////////////////////////////////////////////////////// |
||
17 | // Copyright (C) 2014 Wizardry and Steamworks - License: GNU GPLv3 // |
||
18 | /////////////////////////////////////////////////////////////////////////// |
||
19 | /// <summary> |
||
20 | /// Retrieves an attribute of type T from an enumeration. |
||
21 | /// </summary> |
||
22 | /// <returns>an attribute of type T</returns> |
||
5 | eva | 23 | public static T GetAttributeFromEnumValue<T>(Enum value) where T : Attribute |
2 | zed | 24 | { |
3 | eva | 25 | return (T) value.GetType() |
2 | zed | 26 | .GetRuntimeField(value.ToString()) |
10 | office | 27 | .GetCustomAttributes(typeof(T), false) |
2 | zed | 28 | .SingleOrDefault(); |
29 | } |
||
30 | |||
31 | /////////////////////////////////////////////////////////////////////////// |
||
32 | // Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
||
33 | /////////////////////////////////////////////////////////////////////////// |
||
34 | /// <summary> |
||
35 | /// Returns all the attributes of type T of an enumeration. |
||
36 | /// </summary> |
||
37 | /// <typeparam name="T">the attribute to retrieve</typeparam> |
||
38 | /// <returns>a list of attributes</returns> |
||
5 | eva | 39 | public static IEnumerable<T> GetEnumAttributes<T>(Enum e) where T : Attribute |
2 | zed | 40 | { |
7 | office | 41 | return e.GetType().GetRuntimeFields().ToArray() |
3 | eva | 42 | .AsParallel() |
5 | eva | 43 | .Select(o => GetAttributeFromEnumValue<T>((Enum) o.GetValue(Activator.CreateInstance<T>()))); |
2 | zed | 44 | } |
45 | |||
46 | /////////////////////////////////////////////////////////////////////////// |
||
47 | // Copyright (C) 2014 Wizardry and Steamworks - License: GNU GPLv3 // |
||
48 | /////////////////////////////////////////////////////////////////////////// |
||
49 | /// <summary> |
||
50 | /// Returns all the field names of an enumeration. |
||
51 | /// </summary> |
||
52 | /// <returns>the field names</returns> |
||
5 | eva | 53 | public static IEnumerable<string> GetEnumNames<T>() |
2 | zed | 54 | { |
55 | return |
||
10 | office | 56 | typeof(T).GetRuntimeFields().ToArray() |
2 | zed | 57 | .AsParallel() |
10 | office | 58 | .Select(o => o.GetCustomAttribute(typeof(NameAttribute), false)) |
2 | zed | 59 | .Select(o => (o as NameAttribute)?.Name) |
60 | .Where(o => !string.IsNullOrEmpty(o)) |
||
61 | .Select(o => o); |
||
62 | } |
||
63 | |||
64 | /////////////////////////////////////////////////////////////////////////// |
||
65 | // Copyright (C) 2014 Wizardry and Steamworks - License: GNU GPLv3 // |
||
66 | /////////////////////////////////////////////////////////////////////////// |
||
67 | /// <summary> |
||
68 | /// Returns all the values of an enumeration. |
||
69 | /// </summary> |
||
70 | /// <returns>the values of the enumeration</returns> |
||
5 | eva | 71 | public static IEnumerable<T> GetEnumValues<T>() |
2 | zed | 72 | { |
10 | office | 73 | return Enum.GetValues(typeof(T)).Cast<object>().Select(value => (T) value); |
2 | zed | 74 | } |
75 | |||
76 | /////////////////////////////////////////////////////////////////////////// |
||
77 | // Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
||
78 | /////////////////////////////////////////////////////////////////////////// |
||
79 | /// <summary> |
||
7 | office | 80 | /// Get the name from an enumeration value. |
2 | zed | 81 | /// </summary> |
82 | /// <param name="value">an enumeration value</param> |
||
83 | /// <returns>the description or the empty string</returns> |
||
5 | eva | 84 | public static string GetNameFromEnumValue(Enum value) |
2 | zed | 85 | { |
7 | office | 86 | var attribute = value.GetType() |
2 | zed | 87 | .GetRuntimeField(value.ToString()) |
10 | office | 88 | .GetCustomAttributes(typeof(NameAttribute), false) |
2 | zed | 89 | .SingleOrDefault() as NameAttribute; |
90 | return attribute?.Name; |
||
91 | } |
||
92 | |||
93 | /////////////////////////////////////////////////////////////////////////// |
||
94 | // Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
||
95 | /////////////////////////////////////////////////////////////////////////// |
||
96 | /// <summary> |
||
97 | /// Get the description from an enumeration value. |
||
98 | /// </summary> |
||
99 | /// <param name="value">an enumeration value</param> |
||
100 | /// <returns>the description or the empty string</returns> |
||
5 | eva | 101 | public static string GetDescriptionFromEnumValue(Enum value) |
2 | zed | 102 | { |
7 | office | 103 | var attribute = value.GetType() |
2 | zed | 104 | .GetRuntimeField(value.ToString()) |
10 | office | 105 | .GetCustomAttributes(typeof(DescriptionAttribute), false) |
2 | zed | 106 | .SingleOrDefault() as DescriptionAttribute; |
107 | return attribute?.Description; |
||
108 | } |
||
109 | |||
110 | /////////////////////////////////////////////////////////////////////////// |
||
111 | // Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
||
112 | /////////////////////////////////////////////////////////////////////////// |
||
113 | /// <summary> |
||
114 | /// Get enumeration value from its name attribute. |
||
115 | /// </summary> |
||
116 | /// <typeparam name="T">the enumeration type</typeparam> |
||
117 | /// <param name="name">the description of a member</param> |
||
118 | /// <returns>the value or the default of T if case no name attribute found</returns> |
||
5 | eva | 119 | public static T GetEnumValueFromName<T>(string name) |
2 | zed | 120 | { |
10 | office | 121 | var field = typeof(T).GetRuntimeFields().ToArray() |
2 | zed | 122 | .AsParallel().SelectMany(f => f.GetCustomAttributes( |
10 | office | 123 | typeof(NameAttribute), false), ( |
124 | f, a) => new {Field = f, Att = a}) |
||
125 | .SingleOrDefault(a => Strings.StringEquals(((NameAttribute) a.Att) |
||
126 | .Name, name, StringComparison.Ordinal)); |
||
3 | eva | 127 | return field != null ? (T) field.Field.GetValue(Activator.CreateInstance<T>()) : default(T); |
2 | zed | 128 | } |
129 | |||
130 | /////////////////////////////////////////////////////////////////////////// |
||
131 | // Copyright (C) 2015 Wizardry and Steamworks - License: GNU GPLv3 // |
||
132 | /////////////////////////////////////////////////////////////////////////// |
||
133 | /// <summary> |
||
7 | office | 134 | /// Get the name of a structure member. |
2 | zed | 135 | /// </summary> |
136 | /// <typeparam name="T">the type of the structure to search</typeparam> |
||
137 | /// <param name="structure">the structure to search</param> |
||
138 | /// <param name="item">the value of the item to search</param> |
||
139 | /// <returns>the description or the empty string</returns> |
||
5 | eva | 140 | public static string GetStructureMemberName<T>(T structure, object item) where T : struct |
2 | zed | 141 | { |
10 | office | 142 | var field = typeof(T).GetRuntimeFields().ToArray() |
143 | .AsParallel().SelectMany(f => f.GetCustomAttributes(typeof(NameAttribute), false), |
||
3 | eva | 144 | (f, a) => new {Field = f, Att = a}).SingleOrDefault(f => f.Field.GetValue(structure).Equals(item)); |
145 | return field != null ? ((NameAttribute) field.Att).Name : string.Empty; |
||
2 | zed | 146 | } |
3 | eva | 147 | |
7 | office | 148 | /////////////////////////////////////////////////////////////////////////// |
149 | // Copyright (C) 2016 Wizardry and Steamworks - License: GNU GPLv3 // |
||
150 | /////////////////////////////////////////////////////////////////////////// |
||
3 | eva | 151 | /// <summary> |
7 | office | 152 | /// Get field or property from a class by supplying a path. |
153 | /// </summary> |
||
154 | /// <typeparam name="T">the type of the object</typeparam> |
||
155 | /// <param name="o">the object</param> |
||
156 | /// <param name="path">the fully qualified path to the field of property</param> |
||
157 | /// <returns> |
||
158 | /// the last object in the fully qualified path or null in case the field or property could not be found |
||
159 | /// </returns> |
||
160 | public static object GetFP<T>(this T o, string path) |
||
161 | { |
||
162 | if (string.IsNullOrEmpty(path)) return null; |
||
163 | if (o == null) return null; |
||
164 | |||
165 | var memberType = o.GetType(); |
||
166 | var components = path.Split('.'); |
||
167 | |||
168 | var f = memberType.GetRuntimeField(components[0]); |
||
169 | var p = memberType.GetRuntimeProperty(components[0]); |
||
170 | |||
171 | if (f != null) |
||
172 | return components.Length > 1 |
||
173 | ? GetFP(f.GetValue(o), |
||
174 | components.Skip(1).Aggregate((a, i) => a + @"." + i)) |
||
175 | : memberType.GetRuntimeField(path).GetValue(o); |
||
176 | |||
177 | if (p != null) |
||
178 | return components.Length > 1 |
||
179 | ? GetFP(p.GetValue(o), |
||
180 | components.Skip(1).Aggregate((a, i) => a + @"." + i)) |
||
181 | : memberType.GetRuntimeProperty(path).GetValue(o); |
||
182 | |||
183 | return null; |
||
184 | } |
||
185 | |||
186 | /////////////////////////////////////////////////////////////////////////// |
||
187 | // Copyright (C) 2016 Wizardry and Steamworks - License: GNU GPLv3 // |
||
188 | /////////////////////////////////////////////////////////////////////////// |
||
189 | /// <summary> |
||
190 | /// Get field or property info from a class by supplying a path. |
||
191 | /// </summary> |
||
192 | /// <typeparam name="T">the type of the object</typeparam> |
||
193 | /// <param name="o">the object</param> |
||
194 | /// <param name="path">the fully qualified path to the field of property</param> |
||
195 | /// <returns> |
||
196 | /// the field or property info of the last object in the path or null if the object cannot be found |
||
197 | /// </returns> |
||
198 | public static object GetFPInfo<T>(this T o, string path) |
||
199 | { |
||
200 | if (string.IsNullOrEmpty(path)) return null; |
||
201 | if (o == null) return null; |
||
202 | |||
203 | var memberType = o.GetType(); |
||
204 | var components = path.Split('.'); |
||
205 | |||
206 | var f = memberType.GetRuntimeField(components[0]); |
||
207 | var p = memberType.GetRuntimeProperty(components[0]); |
||
208 | |||
209 | if (f != null) |
||
210 | return components.Length > 1 |
||
211 | ? GetFPInfo(f.GetValue(o), |
||
212 | components.Skip(1).Aggregate((a, i) => a + @"." + i)) |
||
213 | : memberType.GetRuntimeField(path); |
||
214 | |||
215 | if (p != null) |
||
216 | return components.Length > 1 |
||
217 | ? GetFPInfo(p.GetValue(o), |
||
218 | components.Skip(1).Aggregate((a, i) => a + @"." + i)) |
||
219 | : memberType.GetRuntimeProperty(path); |
||
220 | |||
221 | return null; |
||
222 | } |
||
223 | |||
224 | /////////////////////////////////////////////////////////////////////////// |
||
225 | // Copyright (C) 2016 Wizardry and Steamworks - License: GNU GPLv3 // |
||
226 | /////////////////////////////////////////////////////////////////////////// |
||
19 | office | 227 | /// <summary>Return all the run-time properties for an object.</summary> |
228 | /// <param name="o">the object whose properties to return</param> |
||
229 | /// <returns>the property information for all the properties of the object</returns> |
||
230 | public static IEnumerable<PropertyInfo> GetPropertiesInfo<T>(this T o) |
||
231 | { |
||
232 | foreach (var p in o.GetType().GetRuntimeProperties()) |
||
233 | yield return p; |
||
234 | } |
||
235 | |||
236 | /////////////////////////////////////////////////////////////////////////// |
||
237 | // Copyright (C) 2016 Wizardry and Steamworks - License: GNU GPLv3 // |
||
238 | /////////////////////////////////////////////////////////////////////////// |
||
7 | office | 239 | /// <summary> |
240 | /// Enumerate all the base types recursively starting from a type. |
||
241 | /// </summary> |
||
242 | /// <param name="type">the type</param> |
||
243 | /// <returns>an enumeration of all base types</returns> |
||
244 | public static IEnumerable<Type> GetBaseTypes(this Type type) |
||
245 | { |
||
246 | var baseType = type.GetTypeInfo().BaseType; |
||
10 | office | 247 | if (baseType == null) |
7 | office | 248 | yield break; |
249 | yield return baseType; |
||
250 | foreach (var t in GetBaseTypes(baseType)) |
||
251 | { |
||
252 | yield return t; |
||
253 | } |
||
254 | } |
||
255 | |||
256 | /// <summary> |
||
3 | eva | 257 | /// A generic name attribute. |
258 | /// </summary> |
||
259 | public class NameAttribute : Attribute |
||
260 | { |
||
261 | protected readonly string name; |
||
262 | |||
263 | public NameAttribute(string name) |
||
264 | { |
||
265 | this.name = name; |
||
266 | } |
||
267 | |||
268 | public string Name => name; |
||
269 | } |
||
270 | |||
271 | /// <summary> |
||
272 | /// A generic description attribute. |
||
273 | /// </summary> |
||
274 | public class DescriptionAttribute : Attribute |
||
275 | { |
||
276 | protected readonly string description; |
||
277 | |||
278 | public DescriptionAttribute(string description) |
||
279 | { |
||
280 | this.description = description; |
||
281 | } |
||
282 | |||
283 | public string Description => description; |
||
284 | } |
||
2 | zed | 285 | } |
3 | eva | 286 | } |