public static void EmitGetUnpackerItemsCountAsInt32(TracingILGenerator il, int unpackerArgumentIndex, LocalVariableHolder localHolder)
{
Contract.Requires(il != null);
Contract.Requires(unpackerArgumentIndex >= 0);
il.EmitAnyLdloca(localHolder.RawItemsCount);
il.EmitInitobj(typeof(long));
il.BeginExceptionBlock();
il.EmitAnyLdarg(unpackerArgumentIndex);
il.EmitGetProperty(_Unpacker.ItemsCount);
il.EmitAnyStloc(localHolder.RawItemsCount);
il.BeginCatchBlock(typeof(InvalidOperationException));
il.EmitAnyCall(SerializationExceptions.NewIsIncorrectStreamMethod);
il.EmitThrow();
il.EndExceptionBlock();
il.EmitAnyLdloc(localHolder.RawItemsCount);
il.EmitLdc_I8(0x7fffffffL);
Label target = il.DefineLabel();
il.EmitBle_S(target);
il.EmitAnyCall(SerializationExceptions.NewIsTooLargeCollectionMethod);
il.EmitThrow();
il.MarkLabel(target);
il.EmitAnyLdloc(localHolder.RawItemsCount);
il.EmitConv_I4();
}
private static void EmitDeserializeValueCore(SerializerEmitter emitter, TracingILGenerator il, int unpackerArgumentIndex, LocalBuilder value, Type targetType, SerializingMember?member, string memberName, Label endOfDeserialization, LocalVariableHolder localHolder)
{
MethodInfo directReadMethod = _Unpacker.GetDirectReadMethod(value.LocalType);
if ((directReadMethod != null) && (!member.HasValue || !UnpackHelpers.IsReadOnlyAppendableCollectionMember(member.Value.Member)))
{
LocalBuilder isDeserializationSucceeded = localHolder.IsDeserializationSucceeded;
il.EmitLdc_I4_0();
il.EmitAnyStloc(isDeserializationSucceeded);
il.BeginExceptionBlock();
il.EmitAnyLdarg(unpackerArgumentIndex);
il.EmitAnyLdloca(value);
il.EmitAnyCall(directReadMethod);
il.EmitAnyStloc(isDeserializationSucceeded);
il.BeginCatchBlock(typeof(MessageTypeException));
LocalBuilder catchedException = localHolder.GetCatchedException(typeof(MessageTypeException));
il.EmitAnyStloc(catchedException);
il.EmitTypeOf(targetType);
il.EmitLdstr(memberName);
il.EmitAnyLdloc(catchedException);
il.EmitAnyCall(SerializationExceptions.NewFailedToDeserializeMemberMethod);
il.EmitThrow();
il.EndExceptionBlock();
Label target = il.DefineLabel("END_IF");
il.EmitAnyLdloc(isDeserializationSucceeded);
il.EmitBrtrue_S(target);
il.EmitAnyCall(SerializationExceptions.NewUnexpectedEndOfStreamMethod);
il.EmitThrow();
il.MarkLabel(target);
if (member.HasValue)
{
EmitNilImplicationForPrimitive(il, member.Value, value, endOfDeserialization);
}
}
else
{
EmitGeneralRead(il, unpackerArgumentIndex);
if (member.HasValue)
{
EmitNilImplication(il, unpackerArgumentIndex, member.Value.Contract.Name, member.Value.Contract.NilImplication, endOfDeserialization, localHolder);
}
Label label2 = il.DefineLabel("THEN_IF_COLLECTION");
Label label3 = il.DefineLabel("END_IF_COLLECTION");
il.EmitAnyLdarg(unpackerArgumentIndex);
il.EmitGetProperty(_Unpacker.IsArrayHeader);
il.EmitAnyLdarg(unpackerArgumentIndex);
il.EmitGetProperty(_Unpacker.IsMapHeader);
il.EmitOr();
il.EmitBrtrue_S(label2);
EmitUnpackFrom(emitter, il, value, unpackerArgumentIndex);
il.EmitBr_S(label3);
LocalBuilder subtreeUnpacker = localHolder.SubtreeUnpacker;
il.MarkLabel(label2);
EmitUnpackerBeginReadSubtree(il, unpackerArgumentIndex, subtreeUnpacker);
EmitUnpackFrom(emitter, il, value, subtreeUnpacker);
EmitUnpackerEndReadSubtree(il, subtreeUnpacker);
il.MarkLabel(label3);
}
}
public static void EmitUnpackerBeginReadSubtree(TracingILGenerator il, int unpackerArgumentIndex, LocalBuilder subtreeUnpacker)
{
Contract.Requires(il != null);
Contract.Requires(unpackerArgumentIndex >= 0);
Contract.Requires(subtreeUnpacker != null);
il.EmitAnyLdarg(unpackerArgumentIndex);
il.EmitAnyCall(_Unpacker.ReadSubtree);
il.EmitAnyStloc(subtreeUnpacker);
il.BeginExceptionBlock();
}
/// <summary>
/// Emits gets <see cref="Unpacker.ItemsCount"/> with exception handling.
/// Note that final state is the value is pushed top of the evaluation stack.
/// </summary>
/// <param name="il">IL generator.</param>
/// <param name="unpackerArgumentIndex">Argument index of the unpacker.</param>
/// <param name="localHolder">The <see cref="LocalVariableHolder"/> which holds shared local variable information.</param>
public static void EmitGetUnpackerItemsCountAsInt32(TracingILGenerator il, int unpackerArgumentIndex, LocalVariableHolder localHolder)
{
Contract.Requires(il != null);
Contract.Requires(unpackerArgumentIndex >= 0);
/*
* long rawItemsCount;
* try
* {
* rawItemsCount = unpacker.ItemsCount;
* }
* catch ( InvalidOperationException ex )
* {
* throw SerializationExceptions.NewIsIncorrectStream( ex );
* }
*
* if( rawItemsCount > Int32.MaxValue )
* {
* throw SerializationException.NewIsTooLargeCollection();
* }
*
* ... unchecked( ( int )rawItemsCount );
*/
il.EmitAnyLdloca(localHolder.RawItemsCount);
il.EmitInitobj(typeof(long));
il.BeginExceptionBlock();
il.EmitAnyLdarg(unpackerArgumentIndex);
il.EmitGetProperty(Metadata._Unpacker.ItemsCount);
il.EmitAnyStloc(localHolder.RawItemsCount);
il.BeginCatchBlock(typeof(InvalidOperationException));
il.EmitAnyCall(SerializationExceptions.NewIsIncorrectStreamMethod);
il.EmitThrow();
il.EndExceptionBlock();
il.EmitAnyLdloc(localHolder.RawItemsCount);
il.EmitLdc_I8(Int32.MaxValue);
var endIf = il.DefineLabel();
il.EmitBle_S(endIf);
il.EmitAnyCall(SerializationExceptions.NewIsTooLargeCollectionMethod);
il.EmitThrow();
il.MarkLabel(endIf);
il.EmitAnyLdloc(localHolder.RawItemsCount);
il.EmitConv_I4();
}
/// <summary>
/// Emits helper function to avoid lexical closure emitting.
/// </summary>
/// <param name="il"><see cref="TracingILGenerator"/>.</param>
/// <param name="targetOperation"><see cref="MethodInfo"/> of the method to be invoked.</param>
/// <param name="tupleTypes">The array of <see cref="Type"/> of nested tuples. The outermost is the first, innermost is the last.</param>
/// <param name="itemTypes">The array of <see cref="Type"/> of flatten tuple items.</param>
private static void EmitPrivateInvoke(TracingILGenerator il, MethodInfo targetOperation, IList <Type> tupleTypes, Type[] itemTypes)
{
/*
* private void/T PrivateInvoke( object state )
* {
* T result;
* Dispatcher.BeginOperation();
* try
* {
* var tuple = state as Tuple<...>;
* result =
* tuple.Item1.Target(
* tuple.Item2,
* :
* tuple.Rest.Rest....ItemN
* );
* }
* catch( TheradAbortException )
* {
* Dispatcher.HandleThreadAbortException( ex );
* }
* finally
* {
* Dispatcher.EndOperation();
* }
*
* return result;
* }
*/
var tuple = il.DeclareLocal(tupleTypes.First(), "tuple");
var result = targetOperation.ReturnType == typeof(void) ? null : il.DeclareLocal(targetOperation.ReturnType, "result");
il.EmitAnyLdarg(0);
il.EmitCall(_dispatcherBeginOperationMethod);
il.BeginExceptionBlock();
il.EmitAnyLdarg(1);
il.EmitIsinst(tupleTypes.First());
il.EmitAnyStloc(tuple);
int depth = -1;
for (int i = 0; i < itemTypes.Length; i++)
{
if (i % 7 == 0)
{
depth++;
}
il.EmitAnyLdloc(tuple);
for (int j = 0; j < depth; j++)
{
// .TRest.TRest ...
var rest = tupleTypes[j].GetProperty("Rest");
il.EmitGetProperty(rest);
}
var itemn = tupleTypes[depth].GetProperty("Item" + ((i % 7) + 1));
il.EmitGetProperty(itemn);
}
il.EmitAnyCall(targetOperation);
if (targetOperation.ReturnType != typeof(void))
{
il.EmitAnyStloc(result);
}
il.BeginCatchBlock(typeof(ThreadAbortException));
var ex = il.DeclareLocal(typeof(ThreadAbortException), "ex");
il.EmitAnyStloc(ex);
il.EmitAnyLdarg(0);
il.EmitAnyLdloc(ex);
il.EmitCall(_dispatcherHandleThreadAbortExceptionMethod);
il.BeginFinallyBlock();
il.EmitAnyLdarg(0);
il.EmitCall(_dispatcherEndOperationMethod);
il.EndExceptionBlock();
if (targetOperation.ReturnType != typeof(void))
{
il.EmitAnyLdloc(result);
}
il.EmitRet();
}
public static void EmitForEach(TracingILGenerator il, CollectionTraits traits, LocalBuilder collection, Action <TracingILGenerator, Action> bodyEmitter)
{
Contract.Requires(il != null);
Contract.Requires(collection != null);
Contract.Requires(bodyEmitter != null);
LocalBuilder enumerator = il.DeclareLocal(traits.GetEnumeratorMethod.ReturnType, "enumerator");
if (collection.LocalType.IsValueType)
{
il.EmitAnyLdloca(collection);
}
else
{
il.EmitAnyLdloc(collection);
}
il.EmitAnyCall(traits.GetEnumeratorMethod);
il.EmitAnyStloc(enumerator);
if (typeof(IDisposable).IsAssignableFrom(traits.GetEnumeratorMethod.ReturnType))
{
il.BeginExceptionBlock();
}
Label label = il.DefineLabel("START_LOOP");
il.MarkLabel(label);
Label target = il.DefineLabel("END_LOOP");
Type returnType = traits.GetEnumeratorMethod.ReturnType;
MethodInfo method = returnType.GetMethod("MoveNext", Type.EmptyTypes);
PropertyInfo currentProperty = traits.GetEnumeratorMethod.ReturnType.GetProperty("Current");
if (method == null)
{
method = _IEnumerator.MoveNext;
}
if (currentProperty == null)
{
if (returnType == typeof(IDictionaryEnumerator))
{
currentProperty = _IDictionaryEnumerator.Current;
}
else if (returnType.IsInterface)
{
if (returnType.IsGenericType && (returnType.GetGenericTypeDefinition() == typeof(IEnumerator <>)))
{
currentProperty = typeof(IEnumerator <>).MakeGenericType(new Type[] { traits.ElementType }).GetProperty("Current");
}
else
{
currentProperty = _IEnumerator.Current;
}
}
}
Contract.Assert(currentProperty != null, returnType.ToString());
if (traits.GetEnumeratorMethod.ReturnType.IsValueType)
{
il.EmitAnyLdloca(enumerator);
}
else
{
il.EmitAnyLdloc(enumerator);
}
il.EmitAnyCall(method);
il.EmitBrfalse(target);
bodyEmitter(il, delegate {
if (traits.GetEnumeratorMethod.ReturnType.IsValueType)
{
il.EmitAnyLdloca(enumerator);
}
else
{
il.EmitAnyLdloc(enumerator);
}
il.EmitGetProperty(currentProperty);
});
il.EmitBr(label);
il.MarkLabel(target);
if (typeof(IDisposable).IsAssignableFrom(traits.GetEnumeratorMethod.ReturnType))
{
il.BeginFinallyBlock();
if (traits.GetEnumeratorMethod.ReturnType.IsValueType)
{
MethodInfo info2 = traits.GetEnumeratorMethod.ReturnType.GetMethod("Dispose");
if (((info2 != null) && (info2.GetParameters().Length == 0)) && (info2.ReturnType == typeof(void)))
{
il.EmitAnyLdloca(enumerator);
il.EmitAnyCall(info2);
}
else
{
il.EmitAnyLdloc(enumerator);
il.EmitBox(traits.GetEnumeratorMethod.ReturnType);
il.EmitAnyCall(_IDisposable.Dispose);
}
}
else
{
il.EmitAnyLdloc(enumerator);
il.EmitAnyCall(_IDisposable.Dispose);
}
il.EndExceptionBlock();
}
}
/// <summary>
/// Emits 'foreach' statement on the IL stream.
/// </summary>
/// <param name="il">IL generator to be emitted to.</param>
/// <param name="traits"><see cref="CollectionTraits"/> which contains traits of the iterating collection.</param>
/// <param name="collection">'collection' argument index.</param>
/// <param name="bodyEmitter">Delegate to emit body statement.</param>
public static void EmitForEach(TracingILGenerator il, CollectionTraits traits, LocalBuilder collection, Action <TracingILGenerator, Action> bodyEmitter)
{
Contract.Requires(il != null);
Contract.Requires(collection != null);
Contract.Requires(bodyEmitter != null);
var enumerator = il.DeclareLocal(traits.GetEnumeratorMethod.ReturnType, "enumerator");
// gets enumerator
if (collection.LocalType.IsValueType)
{
il.EmitAnyLdloca(collection);
}
else
{
il.EmitAnyLdloc(collection);
}
il.EmitAnyCall(traits.GetEnumeratorMethod);
il.EmitAnyStloc(enumerator);
if (typeof(IDisposable).IsAssignableFrom(traits.GetEnumeratorMethod.ReturnType))
{
il.BeginExceptionBlock();
}
var startLoop = il.DefineLabel("START_LOOP");
il.MarkLabel(startLoop);
var endLoop = il.DefineLabel("END_LOOP");
var enumeratorType = traits.GetEnumeratorMethod.ReturnType;
MethodInfo moveNextMethod = enumeratorType.GetMethod("MoveNext", Type.EmptyTypes);
PropertyInfo currentProperty = traits.GetEnumeratorMethod.ReturnType.GetProperty("Current");
if (moveNextMethod == null)
{
moveNextMethod = Metadata._IEnumerator.MoveNext;
}
if (currentProperty == null)
{
if (enumeratorType == typeof(IDictionaryEnumerator))
{
currentProperty = Metadata._IDictionaryEnumerator.Current;
}
else if (enumeratorType.IsInterface)
{
if (enumeratorType.IsGenericType && enumeratorType.GetGenericTypeDefinition() == typeof(IEnumerator <>))
{
currentProperty = typeof(IEnumerator <>).MakeGenericType(traits.ElementType).GetProperty("Current");
}
else
{
currentProperty = Metadata._IEnumerator.Current;
}
}
}
Contract.Assert(currentProperty != null, enumeratorType.ToString());
// iterates
if (traits.GetEnumeratorMethod.ReturnType.IsValueType)
{
il.EmitAnyLdloca(enumerator);
}
else
{
il.EmitAnyLdloc(enumerator);
}
il.EmitAnyCall(moveNextMethod);
il.EmitBrfalse(endLoop);
bodyEmitter(
il,
() =>
{
if (traits.GetEnumeratorMethod.ReturnType.IsValueType)
{
il.EmitAnyLdloca(enumerator);
}
else
{
il.EmitAnyLdloc(enumerator);
}
il.EmitGetProperty(currentProperty);
}
);
il.EmitBr(startLoop);
il.MarkLabel(endLoop);
// Dispose
if (typeof(IDisposable).IsAssignableFrom(traits.GetEnumeratorMethod.ReturnType))
{
il.BeginFinallyBlock();
if (traits.GetEnumeratorMethod.ReturnType.IsValueType)
{
var disposeMethod = traits.GetEnumeratorMethod.ReturnType.GetMethod("Dispose");
if (disposeMethod != null && disposeMethod.GetParameters().Length == 0 && disposeMethod.ReturnType == typeof(void))
{
il.EmitAnyLdloca(enumerator);
il.EmitAnyCall(disposeMethod);
}
else
{
il.EmitAnyLdloc(enumerator);
il.EmitBox(traits.GetEnumeratorMethod.ReturnType);
il.EmitAnyCall(Metadata._IDisposable.Dispose);
}
}
else
{
il.EmitAnyLdloc(enumerator);
il.EmitAnyCall(Metadata._IDisposable.Dispose);
}
il.EndExceptionBlock();
}
}
/// <summary>
/// Emits the deserialize value.
/// </summary>
/// <param name="emitter">The emitter.</param>
/// <param name="il">The il generator.</param>
/// <param name="unpackerArgumentIndex">Index of the unpacker argument.</param>
/// <param name="value">The value local variable which stores unpacked value.</param>
/// <param name="targetType">The type of deserialzing type.</param>
/// <param name="member">The metadata for nil implication. Specify <c>null</c> if nil implication is not needed.</param>
/// <param name="memberName">The name of the member.</param>
/// <param name="endOfDeserialization">The end of deserialization label for nil implication.</param>
/// <param name="localHolder">The <see cref="LocalVariableHolder"/> which holds shared local variable information.</param>
private static void EmitDeserializeValueCore(SerializerEmitter emitter, TracingILGenerator il, int unpackerArgumentIndex, LocalBuilder value, Type targetType, SerializingMember?member, string memberName, Label endOfDeserialization, LocalVariableHolder localHolder)
{
var directUnpacking = Metadata._Unpacker.GetDirectReadMethod(value.LocalType);
if (directUnpacking != null && (member == null || !UnpackHelpers.IsReadOnlyAppendableCollectionMember(member.Value.Member)))
{
var isSuccess = localHolder.IsDeserializationSucceeded;
il.EmitLdc_I4_0();
il.EmitAnyStloc(isSuccess);
il.BeginExceptionBlock();
il.EmitAnyLdarg(unpackerArgumentIndex);
il.EmitAnyLdloca(value);
il.EmitAnyCall(directUnpacking);
il.EmitAnyStloc(isSuccess);
il.BeginCatchBlock(typeof(MessageTypeException));
var ex = localHolder.GetCatchedException(typeof(MessageTypeException));
il.EmitAnyStloc(ex);
il.EmitTypeOf(targetType);
il.EmitLdstr(memberName);
il.EmitAnyLdloc(ex);
il.EmitAnyCall(SerializationExceptions.NewFailedToDeserializeMemberMethod);
il.EmitThrow();
il.EndExceptionBlock();
var endIf0 = il.DefineLabel("END_IF");
il.EmitAnyLdloc(isSuccess);
il.EmitBrtrue_S(endIf0);
il.EmitAnyCall(SerializationExceptions.NewUnexpectedEndOfStreamMethod);
il.EmitThrow();
il.MarkLabel(endIf0);
if (member != null)
{
// If null, nil implication is NOT needed.
EmitNilImplicationForPrimitive(il, member.Value, value, endOfDeserialization);
}
}
else
{
EmitGeneralRead(il, unpackerArgumentIndex);
if (member != null)
{
// If null, nil implication is NOT needed.
EmitNilImplication(
il,
unpackerArgumentIndex,
member.Value.Contract.Name,
member.Value.Contract.NilImplication,
endOfDeserialization,
localHolder
);
}
var thenIffCollection = il.DefineLabel("THEN_IF_COLLECTION");
var endIfCollection = il.DefineLabel("END_IF_COLLECTION");
/*
* if( !unpacker.IsArrayHeader && !unpacker.IsMapHeader )
* {
* value = GET_SERIALIZER().UnpackFrom( unpacker );
* }
* else
* {
* using( var subtreeUnpacker = unpacker.ReadSubtree() )
* {
* value = GET_SERIALIZER().UnpackFrom( subtreeUnpacker );
* }
* }
*/
il.EmitAnyLdarg(unpackerArgumentIndex);
il.EmitGetProperty(Metadata._Unpacker.IsArrayHeader);
il.EmitAnyLdarg(unpackerArgumentIndex);
il.EmitGetProperty(Metadata._Unpacker.IsMapHeader);
il.EmitOr();
il.EmitBrtrue_S(thenIffCollection);
EmitUnpackFrom(emitter, il, value, unpackerArgumentIndex);
il.EmitBr_S(endIfCollection);
var subtreeUnpacker = localHolder.SubtreeUnpacker;
il.MarkLabel(thenIffCollection);
EmitUnpackerBeginReadSubtree(il, unpackerArgumentIndex, subtreeUnpacker);
EmitUnpackFrom(emitter, il, value, subtreeUnpacker);
EmitUnpackerEndReadSubtree(il, subtreeUnpacker);
il.MarkLabel(endIfCollection);
}
}