使用Regex解析代码-如何使用额外的{...}捕获方法的主体？ [英] Parse code with Regex - how to capture method's body with extra {... }?

问题描述

可能重复：

使用Regex解析CIL代码

此问题来自< a href = https://stackoverflow.com/questions/12999422/parse-cil-code-with-regex>使用Regex解析CIL代码
为了捕获方法的主体，我添加了方括号（），它变成

var regex3 = @（\.method\s [^ {] +（{（?! \s *}）。*？}）））;

，效果很好。例如， capture.Groups [2] 给我

and it worked fine. For example, capture.Groups[2] gives me

{
    .entrypoint
    // 
    .maxstack  8
    IL_0000:  nop
    IL_0001:  call       void TestAssemblyConsole.Test::Method1()
    IL_0006:  nop
    IL_0007:  call       int32 TestAssemblyConsole.Test::Method2()
    IL_000c:  pop
    IL_000d:  call       string [mscorlib]System.Console::ReadLine()
    IL_0012:  pop
    IL_0013:  ret
  }

这就是我想要的。但是，如果我有

and it's what I'm looking for. However if I have

.method public hidebysig static void  Method1() cil managed
  {
    // 
    .maxstack 3
    .locals init (class [mscorlib]System.Exception V_0)
    IL_0000:  nop
    .try
    {
      .try
      {
        IL_0001:  nop
        IL_0002:  ldstr      "gfhgfhgfhg"
        IL_0007:  call       void [mscorlib]System.Console::WriteLine(string)
        IL_000c:  nop
        IL_000d:  nop
        IL_000e:  leave.s    IL_0020

      }  // end .try
      catch [mscorlib]System.Exception 
      {
        IL_0010:  stloc.0
        IL_0011:  nop
        IL_0012:  ldstr      "exception"
        IL_0017:  call       void [mscorlib]System.Console::WriteLine(string)
        IL_001c:  nop
        IL_001d:  nop
        IL_001e:  leave.s    IL_0020

      }  // end handler
      IL_0020:  nop
      IL_0021:  leave.s    IL_0031

    }  // end .try
    finally
    {
      IL_0023:  nop
      IL_0024:  ldstr      "finally"
      IL_002f:  nop
      IL_0030:  endfinally
    }  // end handler
    IL_0031:  nop
    IL_0032:  ret
  } 

然后它无法正常工作。我只是因为方法中的} ..} 而捕获了方法主体的 部分

then it does not working well. I just captures the part of method's body because of } .. } within a method

{
    // 
    .maxstack  1
    .locals init (class [mscorlib]System.Exception V_0)
    IL_0000:  nop
    .try
    {
      .try
      {
        IL_0001:  nop
        IL_0002:  ldstr      "gfhgfhgfhg"
        IL_0007:  call       void [mscorlib]System.Console::WriteLine(string)
        IL_000c:  nop
        IL_000d:  nop
        IL_000e:  leave.s    IL_0020

      }

即使包含许多{..}，我如何更改正则表达式以捕获所有方法的主体？

How do I change regex to be able to capture all method's body even when it contains many { .. } ?

推荐答案

基本来说，正则表达式不是匹配嵌套结构的正确工具，但是在您的情况下，您可以使用{。*}之类的东西来匹配所有内容，直到最后一个} （显然，这无法使用多种方法。）

Basically Regexes are not the right tool for matching nested structures, however in your case you could use something like {.*} to match everything until the last } (Obviously that won't work with multiple methods.)

编写CF语法解析器可以自己使用，也可以使用Antlr之类的东西。

Write a CF Grammar parser yourself or use something like Antlr.

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