public static bool PrecedenceCouldChange(Microsoft.CodeAnalysis.VisualBasic.VisualBasicSyntaxNode node)
{
bool parentIsSameBinaryKind = node is Microsoft.CodeAnalysis.VisualBasic.Syntax.BinaryExpressionSyntax && node.Parent is Microsoft.CodeAnalysis.VisualBasic.Syntax.BinaryExpressionSyntax parent && parent.Kind() == node.Kind();
bool parentIsReturn = node.Parent is Microsoft.CodeAnalysis.VisualBasic.Syntax.ReturnStatementSyntax;
bool parentIsLambda = node.Parent is Microsoft.CodeAnalysis.VisualBasic.Syntax.LambdaExpressionSyntax;
bool parentIsNonArgumentExpression = node.Parent is Microsoft.CodeAnalysis.VisualBasic.Syntax.ExpressionSyntax && !(node.Parent is Microsoft.CodeAnalysis.VisualBasic.Syntax.ArgumentSyntax);
bool parentIsParenthesis = node.Parent is Microsoft.CodeAnalysis.VisualBasic.Syntax.ParenthesizedExpressionSyntax;
// Could be a full C# precedence table - this is just a common case
bool parentIsAndOr = node.Parent.IsKind(Microsoft.CodeAnalysis.VisualBasic.SyntaxKind.AndAlsoExpression, Microsoft.CodeAnalysis.VisualBasic.SyntaxKind.OrElseExpression);
bool nodeIsRelationalOrEqual = node.IsKind(Microsoft.CodeAnalysis.VisualBasic.SyntaxKind.EqualsExpression, Microsoft.CodeAnalysis.VisualBasic.SyntaxKind.NotEqualsExpression,
Microsoft.CodeAnalysis.VisualBasic.SyntaxKind.LessThanExpression, Microsoft.CodeAnalysis.VisualBasic.SyntaxKind.LessThanOrEqualExpression,
Microsoft.CodeAnalysis.VisualBasic.SyntaxKind.GreaterThanExpression, Microsoft.CodeAnalysis.VisualBasic.SyntaxKind.GreaterThanOrEqualExpression);
bool csharpPrecedenceSame = parentIsAndOr && nodeIsRelationalOrEqual;
return(parentIsNonArgumentExpression && !parentIsSameBinaryKind && !parentIsReturn && !parentIsLambda && !parentIsParenthesis && !csharpPrecedenceSame);
}
public static ExpressionSyntax ParenthesizeIfPrecedenceCouldChange(Microsoft.CodeAnalysis.VisualBasic.VisualBasicSyntaxNode node, ExpressionSyntax expression)
{
return(PrecedenceCouldChange(node) ? SyntaxFactory.ParenthesizedExpression(expression) : expression);
}
