RegexCompilationInfo 类
提供编译器用于将正则表达式编译为独立程序集的信息。
属性
IsPublic:获取或设置一个值,该值指示所编译的正则表达式是否具有公共可见性。
Name:获取或设置用于所编译的正则表达式的类型名称。
Namespace:获取或设置要将新类型添加到的命名空间。
Options:获取或设置编译正则表达式时使用的编译器选项。
Pattern:获取或设置要编译的正则表达式。
方法
Equals:已重载。 确定两个 Object 实例是否相等。 (从 Object 继承。)
GetHashCode:用作特定类型的哈希函数。GetHashCode 适合在哈希算法和数据结构(如哈希表)中使用。 (从 Object 继承。)
GetType:获取当前实例的 Type。 (从 Object 继承。)
ReferenceEquals:确定指定的 Object 实例是否是相同的实例。 (从 Object 继承。)
ToString:返回表示当前 Object 的 String。 (从 Object 继承。)
示例
面的代码示例通过三个步骤定义、创建和使用编译过的正则表达式。
第一个步骤将编译下面的代码示例。代码示例中的 RegexCompilationInfo 构造函数准备了一个正则表达式以供编译
1 | // This code example demonstrates the RegexCompilationInfo constructor |
2 | // and the Regex.CompileToAssembly() method. |
3 | // compile: csc genFishRegex.cs |
4 | |
5 | namespace MyApp |
6 | { |
7 | using System; |
8 | using System.Reflection; |
9 | using System.Text.RegularExpressions; |
10 | class GenFishRegEx |
11 | { |
12 | public static void Main() |
13 | { |
14 | // Pattern = Group matches one or more word characters, |
15 | // one or more white space characters, |
16 | // group matches the string "fish". |
17 | string pat = @"(/w+)/s+(fish)"; |
18 | |
19 | // Create the compilation information. |
20 | // Case-insensitive matching; type name = "FishRegex"; |
21 | // namespace = "MyApp"; type is public. |
22 | RegexCompilationInfo rci = new RegexCompilationInfo( |
23 | pat, RegexOptions.IgnoreCase, |
24 | "FishRegex", "MyApp", true); |
25 | |
26 | // Setup to compile. |
27 | AssemblyName an = new AssemblyName(); |
28 | an.Name = "FishRegex"; |
29 | RegexCompilationInfo[] rciList = { rci }; |
30 | |
31 | // Compile the regular expression. |
32 | Regex.CompileToAssembly(rciList, an); |
33 | } |
34 | } |
35 | } |
36 | |
37 | /* |
38 | This code example produces the following results: |
39 | |
40 | (Execute this code to generate the compiled regular |
41 | expression assembly named FishRegex.dll. |
42 | Use FishRegex.dll as a reference when compiling |
43 | useFishRegex.cs.) |
44 | |
45 | */ |
46 |
第二步:运行第一个步骤中编译的可执行文件。该可执行文件创建 FishRegex.dll 程序集以及一个名为 FishRegex 的编译过的正则表达式类型。
第三步:使用对 FishRegex.dll 的引用编译下面的代码示例,然后运行得到的可执行文件。该可执行文件使用 FishRegex 类型对目标字符串进行匹配,并显示匹配项、组、捕获组以及匹配项在目标字符串中的索引位置。
1 | // This code example demonstrates the RegexCompilationInfo constructor. |
2 | // Execute this code example after executing genFishRegex.exe. |
3 | // compile: csc /r:FishRegex.dll useFishRegex.cs |
4 | |
5 | namespace MyApp |
6 | { |
7 | using System; |
8 | using System.Reflection; |
9 | using System.Text.RegularExpressions; |
10 | |
11 | class UseFishRegEx |
12 | { |
13 | public static void Main() |
14 | { |
15 | // Match against the following target string. |
16 | string targetString = "One fish two fish red fish blue fish"; |
17 | int matchCount = 0; |
18 | FishRegex f = new FishRegex(); |
19 | |
20 | // Display the target string. |
21 | Console.WriteLine("/nInput string = /"" + targetString + "/""); |
22 | |
23 | // Display each match, capture group, capture, and match position. |
24 | foreach (Match m in f.Matches(targetString)) |
25 | { |
26 | Console.WriteLine("/nMatch(" + (++matchCount) + ")"); |
27 | for (int i = 1; i <= 2; i++) |
28 | { |
29 | Group g = m.Groups[i]; |
30 | Console.WriteLine("Group(" + i + ") = /"" + g + "/""); |
31 | CaptureCollection cc = g.Captures; |
32 | for (int j = 0; j < cc.Count; j++) |
33 | { |
34 | Capture c = cc[j]; |
35 | System.Console.WriteLine( |
36 | "Capture(" + j + ") = /"" + c + "/", Position = " + c.Index); |
37 | } |
38 | } |
39 | } |
40 | } |
41 | } |
42 | } |
43 | |
44 | /* |
45 | This code example produces the following results: |
46 | |
47 | Input string = "One fish two fish red fish blue fish" |
48 | |
49 | Match(1) |
50 | Group(1) = "One" |
51 | Capture(0) = "One", Position = 0 |
52 | Group(2) = "fish" |
53 | Capture(0) = "fish", Position = 4 |
54 | |
55 | Match(2) |
56 | Group(1) = "two" |
57 | Capture(0) = "two", Position = 9 |
58 | Group(2) = "fish" |
59 | Capture(0) = "fish", Position = 13 |
60 | |
61 | Match(3) |
62 | Group(1) = "red" |
63 | Capture(0) = "red", Position = 18 |
64 | Group(2) = "fish" |
65 | Capture(0) = "fish", Position = 22 |
66 | |
67 | Match(4) |
68 | Group(1) = "blue" |
69 | Capture(0) = "blue", Position = 27 |
70 | Group(2) = "fish" |
71 | Capture(0) = "fish", Position = 32 |
72 | |
73 | */ |
74 |