private IExpression ConvertArrayCreation(ArrayCreationExpressionSyntax creationExpression)
{
var ixe = new XArrayCreateExpression();
var arrayType = (IArrayTypeSymbol)model.GetTypeInfo(creationExpression).Type;
ixe.Type = ConvertTypeReference(arrayType.ElementType);
if (creationExpression.Initializer == null)
{
foreach (var size in creationExpression.Type.RankSpecifiers.First().Sizes)
{
ixe.Dimensions.Add(ConvertExpression(size));
}
return(ixe);
}
var arrayInitSyntax = creationExpression.Initializer;
while (arrayInitSyntax != null)
{
ixe.Dimensions.Add(new XLiteralExpression {
Value = arrayInitSyntax.Expressions.Count
});
if (arrayInitSyntax.Expressions.Count == 0)
{
break;
}
var firstExpr = arrayInitSyntax.Expressions.First();
arrayInitSyntax = firstExpr as InitializerExpressionSyntax;
}
var initializers = creationExpression.Initializer.Expressions.Select(expr => ConvertExpression(expr)).ToList();
ixe.Initializer = new XBlockExpression();
ixe.Initializer.Expressions.AddRange(initializers);
return(ixe);
}
private IExpression ConvertInvocation(InvocationExpressionSyntax invocationExpression)
{
var c = model.GetConstantValue(invocationExpression);
if (c.HasValue)
{
// compile time constant
// including nameof(thing)
return(ConvertConstantExpr(invocationExpression));
}
var methodExpression = invocationExpression.Expression;
var argumentList = invocationExpression.ArgumentList.Arguments;
var convertedArgs = argumentList.Select(arg => ConvertExpression(arg.Expression)).ToList();
if (argumentList.Any(arg => arg.NameColon != null))
{
throw new NotSupportedException("No support yet for named parameters");
}
if (model.GetSymbolInfo(invocationExpression).Symbol is IMethodSymbol methodSymbol &&
methodSymbol.Parameters.Length > 0)
{
var lastParam = methodSymbol.Parameters.Last();
if (lastParam.IsParams && lastParam.Type is IArrayTypeSymbol paramsType)
{
IExpression[] paramsParameters = null;
if (argumentList.Count() == methodSymbol.Parameters.Count())
{
// one element or array supplied?
var ti = model.GetTypeInfo(argumentList.Last().Expression);
if (!(ti.Type is IArrayTypeSymbol))
{
paramsParameters = new[] { convertedArgs.Last() };
}
}
else
{
paramsParameters = convertedArgs.Skip(methodSymbol.Parameters.Length - 1).ToArray();
}
if (paramsParameters != null)
{
var ixe = new XArrayCreateExpression();
ixe.Type = ConvertTypeReference(paramsType.ElementType);
ixe.Dimensions.Add(new XLiteralExpression {
Value = paramsParameters.Length
});
ixe.Initializer = new XBlockExpression();
ixe.Initializer.Expressions.AddRange(paramsParameters);
convertedArgs.RemoveRange(convertedArgs.Count - paramsParameters.Length, paramsParameters.Length);
convertedArgs.Add(ixe);
}
}
}
var imie = Builder.MethodInvkExpr();
imie.Arguments.AddRange(convertedArgs);
imie.Method = (IMethodReferenceExpression)ConvertExpression(methodExpression);
return(imie);
}
