S5856: Add C# and VB.NET (#1528)

rules/S5856/csharp/metadata.json

@@ -0,0 +1 @@
+{}

rules/S5856/csharp/rule.adoc

@@ -0,0 +1,43 @@
+include::../description.adoc[]
+
+Negative lookahead and negative lookbehind groups cannot be combined with `RegexOptions.NonBacktracking`. Such combination would throw an exception during runtime.
+
+== Noncompliant Code Example
+
+[source,csharp]
+----
+public void DoSomething(string input)
+{
+    var regex = new Regex("[A");                // Noncompliant
+    var match = Regex.Match(input, "[A");       // Noncompliant
+    var matches = Regex.Matches(input, "[A");   // Noncompliant
+    var replace = Regex.Replace(input, "[A", "replacement");    // Noncompliant
+    var split = Regex.Split(input, "[A");       // Noncompliant
+    if(Regex.IsMatch(input, "[A"))              // Noncompliant
+    {
+    }
+    var negativeLookahead = new Regex("a(?!b)", RegexOptions.NonBacktracking);      // Noncompliant
+    var negativeLookbehind = new Regex("(?<!a)b", RegexOptions.NonBacktracking);    // Noncompliant
+}
+----
+
+== Compliant Solution
+
+[source,csharp]
+----
+public void DoSomething(string input)
+{
+    var regex = new Regex("[A-Z]");
+    var match = Regex.Match(input, "[A-Z]");
+    var matches = Regex.Matches(input, "[A-Z]");
+    var replace = Regex.Replace(input, "[A-Z]", "replacement");
+    var split = Regex.Split(input, "[A-Z]");
+    if(Regex.IsMatch(input, "[A-Z]"))
+    {
+    }
+    var negativeLookahead = new Regex("a(?!b)");
+    var negativeLookbehind = new Regex("(?<!a)b");
+}
+----
+
+include::../rspecator.adoc[]

rules/S5856/java/rule.adoc

@@ -25,14 +25,4 @@ str.replace("([", "{");
 str.matches("(\\w+)-(\\d+)");
 ----
 
-ifdef::env-github,rspecator-view[]
+include::../rspecator.adoc[]
-
-'''
-== Implementation Specification
-(visible only on this page)
-
-include::../message.adoc[]
-
-include::../highlighting.adoc[]
-
-endif::env-github,rspecator-view[]

rules/S5856/javascript/rule.adoc

@@ -19,3 +19,4 @@ str.match("\\(\\[");
 str.replace("([", "{");
 ----
 
+include::../rspecator.adoc[]

rules/S5856/kotlin/rule.adoc

@@ -25,14 +25,4 @@ Regex("([", RegexOption.LITERAL)
 "([".toRegex(RegexOption.LITERAL)
 ----
 
-ifdef::env-github,rspecator-view[]
+include::../rspecator.adoc[]
-
-'''
-== Implementation Specification
-(visible only on this page)
-
-include::../message.adoc[]
-
-include::../highlighting.adoc[]
-
-endif::env-github,rspecator-view[]

rules/S5856/message.adoc

@@ -1,4 +1,4 @@
 === Message
 
-Fix this syntax error inside this regex
+Fix the syntax error inside this regex
 

rules/S5856/php/rule.adoc

@@ -22,3 +22,4 @@ str_replace("([", "{", $input);
 preg_replace("/(\\w+)-(\\d+)/", "1234", $input);
 ----
 
+include::../rspecator.adoc[]

rules/S5856/python/rule.adoc

@@ -22,3 +22,4 @@ input.replace("([", "{")
 re.compile(r"(\w+)-(\d+)")
 ----
 
+include::../rspecator.adoc[]

rules/S5856/rspecator.adoc

@@ -0,0 +1,11 @@
+ifdef::env-github,rspecator-view[]
+
+'''
+== Implementation Specification
+(visible only on this page)
+
+include::message.adoc[]
+
+include::highlighting.adoc[]
+
+endif::env-github,rspecator-view[]

rules/S5856/vbnet/metadata.json

@@ -0,0 +1 @@
+{}

rules/S5856/vbnet/rule.adoc

@@ -0,0 +1,39 @@
+include::../description.adoc[]
+
+Negative lookahead and negative lookbehind groups cannot be combined with `RegexOptions.NonBacktracking`. Such combination would throw an exception during runtime.
+
+== Noncompliant Code Example
+
+[source,vbnet]
+----
+Public Sub DoSomething(Input As String)
+    Dim Rx As New Regex("[A")                   ' Noncompliant
+    Dim Match = Regex.Match(Input, "[A")        ' Noncompliant
+    Dim Matches = Regex.Matches(Input, "[A")    ' Noncompliant
+    Dim Replace = Regex.Replace(Input, "[A", "replacement")     ' Noncompliant
+    Dim Split = Regex.Split(Input, "[A")        ' Noncompliant
+    If (Regex.IsMatch(Input, "[A")) Then        ' Noncompliant
+    End If
+    Dim NegativeLookahead As New Regex("a(?!b)", RegexOptions.NonBacktracking)      ' Noncompliant
+    Dim NegativeLookbehind As New Regex("(?<!a)b", RegexOptions.NonBacktracking)    ' Noncompliant
+End Sub
+----
+
+== Compliant Solution
+
+[source,vbnet]
+----
+Public Sub DoSomething(Input As String)
+    Dim Rx As New Regex("[A-Z]")
+    Dim Match = Regex.Match(Input, "[A-Z]")
+    Dim Matches = Regex.Matches(Input, "[A-Z]")
+    Dim Replace = Regex.Replace(Input, "[A-Z]", "replacement")
+    Dim Split = Regex.Split(Input, "[A-Z]")
+    If (Regex.IsMatch(Input, "[A-Z]")) Then
+    End If
+    Dim NegativeLookahead As New Regex("a(?!b)")
+    Dim NegativeLookbehind As New Regex("(?<!a)b")
+End Sub
+----
+
+include::../rspecator.adoc[]