public bool IsOperator(SyntaxToken token)
{
var kind = token.Kind();
return
((SyntaxFacts.IsAnyUnaryExpression(kind) &&
(token.Parent is PrefixUnaryExpressionSyntax || token.Parent is PostfixUnaryExpressionSyntax)) ||
(SyntaxFacts.IsBinaryExpression(kind) && token.Parent is BinaryExpressionSyntax) ||
(SyntaxFacts.IsAssignmentExpressionOperatorToken(kind) && token.Parent is AssignmentExpressionSyntax));
}
