我在哪里可以找到转义字符的MSIL字符串常量列表？ [英] Where can I find a list of escaped characters in MSIL string constants?

问题描述

我写了一个程序（C＃）读取和操作已经从C＃程序生成的MSIL程序。我曾错误地认为，对于MSIL字符串常量的语法规则都是一样的C＃，但后来我碰到了下面的情况：

I've written a program (in C#) that reads and manipulates MSIL programs that have been generated from C# programs. I had mistakenly assumed that the syntax rules for MSIL string constants are the same as for C#, but then I ran into the following situation:

本C＃声明

string s = "Do you wish to send anyway?";

被编译成（其中包括MSIL语句）这个

gets compiled into (among other MSIL statements) this

IL_0128:  ldstr      "Do you wish to send anyway\?"

我没想到这是用来逃跑的问号反斜线。现在我可以很明显借此反斜杠考虑作为我处理的一部分，但大多是出于好奇，我想知道是否有一个清单某处其中的字符获取逃脱，当C＃编译器C＃常量字符串转换成MSIL常量字符串。

I wasn't expecting the backslash that is used to escape the question mark. Now I can obviously take this backslash into account as part of my processing, but mostly out of curiosity I'd like to know if there is a list somewhere of which characters get escaped when the C# compiler converts C# constant strings to MSIL constant strings.

感谢。

推荐答案

更新

+程序Ildasm.exe：也许有转义字符没有名单的原因是因为有这么几个：precisely 6.

Based on experimentation using the C# compiler + ildasm.exe: perhaps the reason there is no list of escaped characters is because there are so few: precisely 6.

从ILDASM生成的IL去，从Visual Studio 2010中编译的C＃程序的：

• 在IL严格的 ASCII
• 在三个传统的空格字符转义
  • \ t ：×09（片）
  • \ñ：的0x0A（新行）
  • \ r ：0X0D（回车）
  • IL is strictly ASCII.
  • Three traditional whitespace characters are escaped
    • \t : 0x09 : (tab)
    • \n : 0x0A : (newline)
    • \r : 0x0D : (carriage return)
    • \：输入0x22：（双引号）
    • \ ：0x3F的：（问号）
    • \\ ：0x5c的：（反斜线）
    • \" : 0x22 : (double quote)
    • \? : 0x3F : (question mark)
    • \\ : 0x5C : (backslash)

    例1：的ASCII以上0x7E的：一个简单的重音E（U + 00E9）

    Example 1: ASCII above 0x7E: A simple accented é (U+00E9)

    C＃：无论是é或\ u00E9变（ E9 字节来自第一的）

    C#: Either "é" or "\u00E9" becomes (E9 byte comes first)

    ldstr      bytearray (E9 00 )
    

    例2：的UTF-16：求和符号Σ（U + 2211）

    Example 2: UTF-16: Summation symbol ∑ (U+2211)

    C＃：无论是Σ或\ u2211变（ 11 字节来自第一的）

    C#: Either "∑" or "\u2211" becomes (11 byte comes first)

    ldstr      bytearray (11 22 )
    

    这篇关于我在哪里可以找到转义字符的MSIL字符串常量列表？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！