/// <summary>
/// Given anonymous type provided constructs an implementation type symbol to be used in emit phase;
/// if the anonymous type has at least one field the implementation type symbol will be created based on
/// a generic type template generated for each 'unique' anonymous type structure, otherwise the template
/// type will be non-generic.
/// </summary>
private NamedTypeSymbol ConstructAnonymousTypeImplementationSymbol(AnonymousTypePublicSymbol anonymous)
{
Debug.Assert(ReferenceEquals(this, anonymous.Manager));
CheckSourceLocationSeen(anonymous);
AnonymousTypeDescriptor typeDescr = anonymous.TypeDescriptor;
typeDescr.AssertIsGood();
// Get anonymous type template
AnonymousTypeTemplateSymbol template;
if (!this.AnonymousTypeTemplates.TryGetValue(typeDescr.Key, out template))
{
// NOTE: the newly created template may be thrown away if another thread wins
template = this.AnonymousTypeTemplates.GetOrAdd(typeDescr.Key, new AnonymousTypeTemplateSymbol(this, typeDescr));
}
// Adjust template location if the template is owned by this manager
if (ReferenceEquals(template.Manager, this))
{
template.AdjustLocation(typeDescr.Location);
}
// In case template is not generic, just return it
if (template.Arity == 0)
{
return template;
}
// otherwise construct type using the field types
var typeArguments = typeDescr.Fields.SelectAsArray(f => f.Type);
return template.Construct(typeArguments);
}
internal AnonymousTypePublicSymbol(AnonymousTypeManager manager, AnonymousTypeDescriptor typeDescr)
{
typeDescr.AssertIsGood();
this.Manager = manager;
this.TypeDescriptor = typeDescr;
var fields = typeDescr.Fields;
var properties = fields.SelectAsArray((field, i, type) => new AnonymousTypePropertySymbol(type, field, i), this);
// members
int membersCount = fields.Length * 2 + 1;
var members = ArrayBuilder <Symbol> .GetInstance(membersCount);
foreach (var property in properties)
{
// Property related symbols
members.Add(property);
members.Add(property.GetMethod);
}
this.Properties = properties;
// Add a constructor
members.Add(new AnonymousTypeConstructorSymbol(this, properties));
_members = members.ToImmutableAndFree();
Debug.Assert(membersCount == _members.Length);
// fill nameToSymbols map
foreach (var symbol in _members)
{
_nameToSymbols.Add(symbol.Name, symbol);
}
}
internal AnonymousTypeOrDelegatePublicSymbol(AnonymousTypeManager manager, AnonymousTypeDescriptor typeDescr)
{
typeDescr.AssertIsGood();
this.Manager = manager;
this.TypeDescriptor = typeDescr;
}
internal AnonymousTypePublicSymbol(AnonymousTypeManager manager, AnonymousTypeDescriptor typeDescr)
{
typeDescr.AssertIsGood();
this.Manager = manager;
this.TypeDescriptor = typeDescr;
int fieldsCount = typeDescr.Fields.Length;
// members
Symbol[] members = new Symbol[fieldsCount * 2 + 1];
int memberIndex = 0;
// The array storing property symbols to be used in
// generation of constructor and other methods
if (fieldsCount > 0)
{
AnonymousTypePropertySymbol[] propertiesArray = new AnonymousTypePropertySymbol[fieldsCount];
// Process fields
for (int fieldIndex = 0; fieldIndex < fieldsCount; fieldIndex++)
{
// Add a property
AnonymousTypePropertySymbol property = new AnonymousTypePropertySymbol(this, typeDescr.Fields[fieldIndex]);
propertiesArray[fieldIndex] = property;
// Property related symbols
members[memberIndex++] = property;
members[memberIndex++] = property.GetMethod;
}
this.Properties = propertiesArray.AsImmutableOrNull();
}
else
{
this.Properties = ImmutableArray <AnonymousTypePropertySymbol> .Empty;
}
// Add a constructor
members[memberIndex++] = new AnonymousTypeConstructorSymbol(this, this.Properties);
_members = members.AsImmutableOrNull();
Debug.Assert(memberIndex == _members.Length);
// fill nameToSymbols map
foreach (var symbol in _members)
{
_nameToSymbols.Add(symbol.Name, symbol);
}
}