public ConstructedValueExpression Compile(MapTypeContext context)
{
if (!IsSupportedType(context.TargetType))
{
return(ConstructedValueExpression.Nothing);
}
// Get the concrete type to construct, the element type to populate, and the Add
// method to call for each value
var(collectionType, elementType, constructor, addMethod) = GetConcreteTypeInfo(context);
Debug.Assert(collectionType != null);
Debug.Assert(context.TargetType.IsAssignableFrom(collectionType));
Debug.Assert(elementType != null);
Debug.Assert(addMethod != null);
Debug.Assert(constructor != null);
var originalTargetType = context.TargetType;
context = context.ChangeTargetType(collectionType);
// Get a list of expressions to create the collection instance and populate it with
// values
var collectionVar = CollectionExpressionFactory.GetMaybeInstantiateCollectionExpression(context, constructor);
var addStmts = CollectionExpressionFactory.GetCollectionPopulateStatements(_scalars, _nonScalars, context, elementType, collectionVar.FinalValue, addMethod);
return(new ConstructedValueExpression(
collectionVar.Expressions.Concat(addStmts.Expressions),
Expression.Convert(collectionVar.FinalValue, originalTargetType),
collectionVar.Variables.Concat(addStmts.Variables)
));
}
public ConstructedValueExpression Compile(MapTypeContext context)
{
if (!IsSupportedType(context.TargetType))
{
return(ConstructedValueExpression.Nothing);
}
// We have a concrete type which implements IEnumerable/IEnumerable<T> and has an Add
// method. Get these things.
var(collectionType, elementType, constructor, addMethod) = GetTypeInfo(context);
Debug.Assert(collectionType != null);
Debug.Assert(context.TargetType.IsAssignableFrom(collectionType));
Debug.Assert(elementType != null);
Debug.Assert(addMethod != null);
Debug.Assert(constructor != null);
var collectionVar = CollectionExpressionFactory.GetMaybeInstantiateCollectionExpression(context, constructor);
var addStmts = CollectionExpressionFactory.GetCollectionPopulateStatements(_scalars, _nonScalars, context, elementType, collectionVar.FinalValue, addMethod);
return(new ConstructedValueExpression(
collectionVar.Expressions.Concat(addStmts.Expressions),
collectionVar.FinalValue,
collectionVar.Variables.Concat(addStmts.Variables)));
}