implemented ConditionalExpression and CastExpression

git-svn-id: svn://svn.sharpdevelop.net/sharpdevelop/branches/vbnet@5962 1ccf3a8d-04fe-1044-b7c0-cef0b8235c61

src/Libraries/NRefactory/Project/Src/Parser/VBNet/Experimental/ExpressionFinder.atg

@@ -373,8 +373,8 @@ Expression =
 	(. nextTokenIsPotentialStartOfXmlMode = true; .)
 	(
 		SimpleExpressionWithSuffix { BinaryOperator SimpleExpressionWithSuffix }
-		/* TODO: operators */
 		| NewExpression
+		| ConditionalExpression
 	)
 .
 
@@ -383,7 +383,7 @@ BinaryOperator =
 	| "=" | "<>" | "<" | ">" | "<=" | ">=" 
 	| "Like" | "&" | "And" | "AndAlso" | "Or" | "OrElse"
 	| "Xor" | "<<" | ">>" | "Is" | "IsNot"
-	| "^=" | "*=" | "/=" | "\\=" | "+=" | "-=" | "&=" | "To" | ":="
+	| "^=" | "*=" | "/=" | "\\=" | "+=" | "-=" | "&=" | "<<=" | ">>=" | "To" | ":="
 .
 
 UnaryOperator =
@@ -396,6 +396,7 @@ SimpleExpressionWithSuffix =
 	(
 	   SimpleExpression { ExpressionSuffix }
 	| "TypeOf" SimpleExpressionWithSuffix "Is" TypeName
+	| CastExpression
 	).
 
 SimpleExpression =
@@ -427,6 +428,36 @@ ExpressionSuffix =
 |    ( "." | "!" ) IdentifierOrKeyword
 .
 
+CastExpression =
+	SimpleCastExpression | ("DirectCast" | "TryCast" | "CType") "(" Expression "," TypeName ")"
+.
+
+SimpleCastExpression =
+	(
+		"CBool"   |
+		"CByte"   |
+		"CChar"   |
+		"CDate"   |
+		"CDec"    |
+		"CDbl"    |
+		"CInt"    |
+		"CLng"    |
+		"CObj"    |
+		"CSByte"  |
+		"CShort"  |
+		"CSng"    |
+		"CStr"    |
+		"CUInt"   |
+		"CULng"   |
+		"CUShort"
+	)
+	"(" Expression ")"
+.
+
+ConditionalExpression =
+	"If" "(" Expression "," Expression [ "," Expression ] ")"
+.
+
 XmlLiteral =
     (. PushContext(Context.Xml, t); .)
     { XmlComment } XmlElement { XmlComment }