如果它在Comments中，则删除行或字符串 [英] delete rows or string if it is in Comments

问题描述

我想删除C中有//或/*...*/多行或单行等注释的行＃



我所做的是，

 静态  string  StripComments（ string 代码）
 { var  re =  @ （^ \ / \ /.*?$）|（\ /*.*?* \ /）; 
  return  Regex.Replace（code，re，  $ 1）; 
} 
 
类
 字符串 s =   / * #define abcdef 
 #define ghijkl * /; 
 
 
 while（s.Contains（ ＃define））
  {s = StripComments（s）;} 

这是正确的我感谢吗？谢谢

解决方案

）|（\ /*.*?* \ /） ;
return Regex.Replace（code，re，

1）;
}

类
字符串 s = / * #define abcdef
#define ghijkl * /;


while（s.Contains（ ＃define））
{s = StripComments（s）;}

这是正确的我感谢吗？谢谢

如果你正确地将其标记为

- 令牌，你只能以健壮的方式检测评论可以包含注释开始/结束字符序列（字符串，字符的所有瑕疵）

- 不能包含注释开始/结束字符序列的标记（除了上述标记和评论之外的所有标记）

- 行评论

- 阻止评论



您可以查看在C＃中学习：字符，字符串，字符串格式，关键字，标识符 [ ^ ]在底部，查看用于使用正则表达式对C＃进行标记的红利代码，包括行和块注释，并注意上述令牌。



干杯

Andi

Hi, i want to delete rows which has comments like "//" or "/*...*/" multile line or single line in C#

what i did is,

static string StripComments(string code)
 { var re = @"(^\/\/.*?$)|(\/*.*?*\/)";
 return Regex.Replace(code, re, "$1");
 }

In a Class
string s="/*#define abcdef
            #define ghijkl*/;
             

 while (s.Contains("#define"))
 {s= StripComments(s);}

is it correct what i did? thanks

解决方案

)|(\/*.*?*\/)"; return Regex.Replace(code, re, "

1"); } In a Class string s="/*#define abcdef #define ghijkl*/; while (s.Contains("#define")) {s= StripComments(s);}

is it correct what i did? thanks

You can only detect comments in a robust way if you do properly tokenize into
- tokens that can contain comment start/end character sequences (all flawours of strings, characters)
- tokens that cannot contain comment start/end character sequences (all but the above tokens and but comments)
- line comments
- block comments

You may have a look at Escaping in C#: characters, strings, string formats, keywords, identifiers[^] at the bottom, see the bonus code for tokenizing C# with Regex, including line and block comments, taking in care of the above mentioned tokens.

Cheers
Andi

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