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using System;
using Google.ProtocolBuffers.Descriptors;
namespace Google.ProtocolBuffers {
public interface IGeneratedExtensionLite {
int Number { get; }
object ContainingType { get; }
IMessageLite MessageDefaultInstance { get; }
}
public class ExtensionDescriptorLite {
private readonly EnumLiteMap enumTypeMap;
private readonly int number;
private readonly FieldType type;
private readonly bool isRepeated;
private readonly bool isPacked;
public ExtensionDescriptorLite(EnumLiteMap enumTypeMap, int number, FieldType type, bool isRepeated, bool isPacked) {
this.enumTypeMap = enumTypeMap;
this.number = number;
this.type = type;
this.isRepeated = isRepeated;
this.isPacked = isPacked;
}
public int Number {
get { return number; }
}
}
public class EnumLiteMap { }
public class GeneratedExtensionLite<TContainingType, TExtensionType> : IGeneratedExtensionLite
where TContainingType : IMessageLite {
private readonly TContainingType containingTypeDefaultInstance;
private readonly TExtensionType defaultValue;
private readonly IMessageLite messageDefaultInstance;
private readonly ExtensionDescriptorLite descriptor;
// We can't always initialize a GeneratedExtension when we first construct
// it due to initialization order difficulties (namely, the default
// instances may not have been constructed yet). So, we construct an
// uninitialized GeneratedExtension once, then call internalInit() on it
// later. Generated code will always call internalInit() on all extensions
// as part of the static initialization code, and internalInit() throws an
// exception if called more than once, so this method is useless to users.
protected GeneratedExtensionLite(
TContainingType containingTypeDefaultInstance,
TExtensionType defaultValue,
IMessageLite messageDefaultInstance,
ExtensionDescriptorLite descriptor) {
this.containingTypeDefaultInstance = containingTypeDefaultInstance;
this.messageDefaultInstance = messageDefaultInstance;
this.defaultValue = defaultValue;
this.descriptor = descriptor;
}
/** For use by generated code only. */
public GeneratedExtensionLite(
TContainingType containingTypeDefaultInstance,
TExtensionType defaultValue,
IMessageLite messageDefaultInstance,
EnumLiteMap enumTypeMap,
int number,
FieldType type)
: this(containingTypeDefaultInstance, defaultValue, messageDefaultInstance,
new ExtensionDescriptorLite(enumTypeMap, number, type,
false /* isRepeated */, false /* isPacked */)) {
}
/** For use by generated code only. */
public GeneratedExtensionLite(
TContainingType containingTypeDefaultInstance,
TExtensionType defaultValue,
IMessageLite messageDefaultInstance,
EnumLiteMap enumTypeMap,
int number,
FieldType type,
bool isPacked)
: this(containingTypeDefaultInstance, defaultValue, messageDefaultInstance,
new ExtensionDescriptorLite(enumTypeMap, number, type,
true /* isRepeated */, isPacked)) {
}
/// <summary>
/// used for the extension registry
/// </summary>
object IGeneratedExtensionLite.ContainingType {
get { return ContainingTypeDefaultInstance; }
}
/**
* Default instance of the type being extended, used to identify that type.
*/
public TContainingType ContainingTypeDefaultInstance {
get {
return containingTypeDefaultInstance;
}
}
/** Get the field number. */
public int Number {
get {
return descriptor.Number;
}
}
/**
* If the extension is an embedded message, this is the default instance of
* that type.
*/
public IMessageLite MessageDefaultInstance {
get {
return messageDefaultInstance;
}
}
}
}
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