Added error expression for invalid initializers.

ICSharpCode.NRefactory.CSharp/Parser/CSharpParser.cs

@@ -1457,7 +1457,7 @@ namespace ICSharpCode.NRefactory.CSharp
 				return result;
 			}
 			
-			public override object Visit (InvalidExpressionStatement statementExpression)
+			public override object Visit (InvalidStatementExpression statementExpression)
 			{
 				var result = new ExpressionStatement ();
 				if (statementExpression.Expression == null)

ICSharpCode.NRefactory.CSharp/Parser/mcs/cs-parser.jay

@@ -4967,6 +4967,20 @@ opt_local_variable_initializer
 		current_variable.Initializer = (Expression) $2;
 		lbag.AppendTo (current_variable, GetLocation ($1));
 	  }
+	| ASSIGN error
+	  {
+	  	if (yyToken == Token.OPEN_BRACKET_EXPR) {
+			report.Error (650, lexer.Location,
+				"Syntax error, bad array declarator. To declare a managed array the rank specifier precedes the variable's identifier. To declare a fixed size buffer field, use the fixed keyword before the field type");
+			current_variable.Initializer = ErrorExpression.Create (650, lexer.Location,
+					"Syntax error, bad array declarator. To declare a managed array the rank specifier precedes the variable's identifier. To declare a fixed size buffer field, use the fixed keyword before the field type");
+		} else {
+			Error_SyntaxError (yyToken);
+			current_variable.Initializer = ErrorExpression.Create (0, lexer.Location,
+					"Syntax error");
+		}
+		lbag.AppendTo (current_variable, GetLocation ($1));
+	  }
 	| error
 	  {
 	  	if (yyToken == Token.OPEN_BRACKET_EXPR) {
@@ -5092,7 +5106,7 @@ statement_expression
 		ExpressionStatement s = $1 as ExpressionStatement;
 		if (s == null) {
 			Expression.Error_InvalidExpressionStatement (report, GetLocation ($1));
-			$$ = new StatementExpression (new InvalidExpressionStatement ($1));
+			$$ = new InvalidStatementExpression ($1 as Expression);
 		} else {
 			$$ = new StatementExpression (s);
 		}

ICSharpCode.NRefactory.CSharp/Parser/mcs/ecore.cs

@@ -6288,14 +6288,14 @@ namespace Mono.CSharp {
 		}
 	}
 	
-	public class InvalidExpressionStatement : Statement
+	public class InvalidStatementExpression : Statement
 	{
 		public Expression Expression {
 			get;
 			private set;
 		}
 		
-		public InvalidExpressionStatement (Expression expr)
+		public InvalidStatementExpression (Expression expr)
 		{
 			this.Expression = expr;
 		}

ICSharpCode.NRefactory.CSharp/Parser/mcs/expression.cs

@@ -9157,14 +9157,28 @@ namespace Mono.CSharp
 		}
 	}
 
-	class ErrorExpression : EmptyExpression
+	public class ErrorExpression : EmptyExpression
 	{
 		public static readonly ErrorExpression Instance = new ErrorExpression ();
-
+		public readonly int ErrorCode;
+		public readonly string Error;
+		
 		private ErrorExpression ()
 			: base (InternalType.ErrorType)
 		{
 		}
+		
+		ErrorExpression (int errorCode, Location location, string error) : base (InternalType.ErrorType)
+		{
+			this.ErrorCode = errorCode;
+			this.loc = location;
+			this.Error = error;
+		}
+		
+		public static ErrorExpression Create (int errorCode, Location location, string error)
+		{
+			return new ErrorExpression (errorCode, location, error);
+		}
 
 		public override Expression CreateExpressionTree (ResolveContext ec)
 		{

ICSharpCode.NRefactory.CSharp/Parser/mcs/visit.cs

@@ -338,7 +338,7 @@ namespace Mono.CSharp
 			return null;
 		}
 		
-		public virtual object Visit (InvalidExpressionStatement invalidExpressionStatement)
+		public virtual object Visit (InvalidStatementExpression invalidStatementExpression)
 		{
 			return null;
 		}