如何用.NET(C#)正则匹配if(Core_Debug)外的printf()

我需要编写.NET(C#)正则表达式，在数百万行C++代码中匹配所有位于if(Core_Debug)语句之外的printf()。这些if语句格式完全不统一，部分包含多个printf()。

此前尝试的正则存在的问题 #

• 会忽略任何紧跟}（忽略空格）的printf()；
• 在本地C#程序中运行时，处理部分文件会卡顿，尽管在正则测试工具上运行正常；
• 偶尔会误判嵌套在if(Core_Debug)内的printf()为外部匹配，测试工具上无此问题。

后续尝试非捕获组和条件匹配的正则，仅能匹配if(Core_Debug)内部的printf()，无法筛选出外部的目标。

测试代码示例 #

if ( Core_Debug )
       printf("Query Thread ID = %x\n", GetCurrentThreadId());
if ( Core_Debug ) {
       printf("Query Thread ID = %x\n", GetCurrentThreadId()); //This should be negated by negative lookahead
}
if ( Core_Debug ) {
       printf("Query Thread ID = %x\n", GetCurrentThreadId());
       printf("Query Thread ID = %x\n", GetCurrentThreadId());
       printf("%lg\n", value);
       printf("Query Thread ID = %x\n", GetCurrentThreadId()); //\<- I want this to not match, it currently does not
}
if(Core_Debug){
printf("Query Thread ID = %x\n", GetCurrentThreadId());
printf("Query Thread ID = %x\n", GetCurrentThreadId()); 
printf("Query Thread ID = %x\n", GetCurrentThreadId()); //<- I want this to not match, it currently does not
}
if(Core_Debug)
{
printf("%lg\n", value);
printf("%lg\n", value);
printf("%lg\n", value);
printf("%lg\n", value);
}

      if ( Core_Debug )
        printf("****type_of_service=%s\n", (char*)k_type_of_service);
    
            if ( Core_Debug ) {
               printf("Enable Table called\n");
               //printf("Enable Table called\n"); //This should be negated by negative lookahead
            }

printf("blah blah");
printf("blah blah");
//some important comment documenting everything
printf("blah blah");
sprintf(blah,"blah blah");
nprintf(blah,"blah blah");
xprintf(blah,"blah blah");
fprintf(blah,"blah blah");
cdprintf(blah,"blah blah");
goboldiegook();
//printf("blah blah");

goboldiegook(){
something;
printf("blah blah");
something;
printf("blah blah");
printf();
something;
printf(); // \<- I want this to match, it currently does not
}

    if (Core_Debug)
    {
        if (hw_present)
            printf("%s: HW is Present\n", mod_name.c_str());
        else
            printf("%s: HW is NOT Present\n", mod_name.c_str());
    
        if (sw_debug)
            printf("%s: SW Debug IS enabled\n", mod_name.c_str());
        else
            printf("%s: SW Debug is NOT enabled\n", mod_name.c_str()); //<- I want this to not match, it currently does not
    }

核心诉求 #

寻求一种适配无固定格式场景的.NET(C#)正则实现，准确区分内外的printf()，例如：

if (Core_Debug)
{
    printf("something"); //<- 不匹配
    printf("something"); //<- 不匹配
}
printf("something"); //<- 匹配

内容的提问来源于stack exchange，提问作者lht21