public override Expression VisitInterpolatedStringExpression(InterpolatedStringExpressionSyntax node)
{
Expression concatenated = null;
foreach (var content in node.Contents)
{
Expression part;
switch (content)
{
case InterpolationSyntax interpolation:
if (_proofSemantics && !interpolation.Expression.IsEvaluatingToPrimitiveType(_semanticModel))
{
throw new UnsupportedSyntaxException($"the interpolation '{interpolation}' of a string interpolation will not evaluate to a primitive type");
}
part = interpolation.Expression.Accept(this);
break;
case InterpolatedStringTextSyntax text:
// TODO not really necessary at this point as strings do not provide any information.
part = new GenericLiteralExpression();
break;
default:
throw new UnsupportedSyntaxException($"interpolated string '{node}' contains unsupported content '{content}'");
}
concatenated = concatenated == null ? part : new AddExpression(concatenated, part);
}
// Faulty formatted (aka syntax errors) string interpolations as well as empty strings may lead to an empty content list.
return(concatenated ?? new GenericLiteralExpression());
}
public ISet <DescriptorKind> Visit(GenericLiteralExpression expression)
{
return(_emptySet);
}
public Expression Visit(GenericLiteralExpression expression)
{
return(expression);
}
public IEnumerable <Expression> Visit(GenericLiteralExpression expression)
{
return(_emptyEnumerable);
}
public SimplifiedExpression Visit(GenericLiteralExpression expression)
{
return(new SimplifiedExpression(expression));
}
public void Visit(GenericLiteralExpression expression)
{
}
