實現一個簡單的C＃代碼解析器

Question

我的程序應該找到在源文本框中Console.WriteLine("並開始閱讀字符串只是"後，直到它找到一個")，然後存儲在變量中捕獲的字符串。例如，如果輸入是：

Console.WriteLine("Hello World") 

然後變量的值應該是Hello World。

幫助將不勝感激。

Answer 1

string yourInput = ... 
var result = Regex.Match(yourInput, "Console.WriteLine[(]\"(.*?)(?<!\\\\)\"[)]").Groups[1].Value; 

一個小測試：

string yourInput = "Console.WriteLine(\"\\\") Yeahhh\")"; 
yourInput += "Console.WriteLine(\"At least Regex can handle \"this\"\")"; 
yourInput += "Console.WriteLine(\"Although \"Regex\" is afraid of parsing \"text\" with nested elements\")"; 
var matches = Regex.Matches(yourInput, "Console.WriteLine[(]\"(.*?)(?<!\\\\)\"[)]"); 
foreach (Match m in matches) 
    System.Diagnostics.Debug.Print(m.Groups[1].Value); 

輸出

\") Yeahhh 
At least Regex can handle "this" 
Although "Regex" is afraid of parsing "text" with nested elements