void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
EmitRead(ctx, valueFrom);
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.EmitBasicRead("ReadString", typeof(string));
ctx.EmitCall(parse);
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.EmitBasicRead("ReadBoolean", ExpectedType);
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
Tail.EmitRead(ctx, valueFrom);
}
protected override void EmitRead(CompilerContext ctx, Local valueFrom)
{
using (Compiler.Local list = AppendToCollection ? ctx.GetLocalWithValue(ExpectedType, valueFrom)
: new Compiler.Local(ctx, typeof(TDictionary)))
using (Compiler.Local token = new Compiler.Local(ctx, typeof(SubItemToken)))
using (Compiler.Local key = new Compiler.Local(ctx, typeof(TKey)))
using (Compiler.Local @value = new Compiler.Local(ctx, typeof(TValue)))
using (Compiler.Local fieldNumber = new Compiler.Local(ctx, typeof(int)))
{
if (!AppendToCollection)
{ // always new
ctx.LoadNullRef();
ctx.StoreValue(list);
}
if (concreteType != null)
{
ctx.LoadValue(list);
Compiler.CodeLabel notNull = ctx.DefineLabel();
ctx.BranchIfTrue(notNull, true);
ctx.EmitCtor(concreteType);
ctx.StoreValue(list);
ctx.MarkLabel(notNull);
}
var redoFromStart = ctx.DefineLabel();
ctx.MarkLabel(redoFromStart);
// key = default(TKey); value = default(TValue);
if (typeof(TKey) == typeof(string))
{
ctx.LoadValue("");
ctx.StoreValue(key);
}
else
{
ctx.InitLocal(typeof(TKey), key);
}
if (typeof(TValue) == typeof(string))
{
ctx.LoadValue("");
ctx.StoreValue(value);
}
else
{
ctx.InitLocal(typeof(TValue), @value);
}
// token = ProtoReader.StartSubItem(reader);
ctx.LoadReader(true);
ctx.EmitCall(typeof(ProtoReader).GetMethod("StartSubItem", Compiler.ReaderUtil.ReaderStateTypeArray));
ctx.StoreValue(token);
Compiler.CodeLabel @continue = ctx.DefineLabel(), processField = ctx.DefineLabel();
// while ...
ctx.Branch(@continue, false);
// switch(fieldNumber)
ctx.MarkLabel(processField);
ctx.LoadValue(fieldNumber);
CodeLabel @default = ctx.DefineLabel(), one = ctx.DefineLabel(), two = ctx.DefineLabel();
ctx.Switch(new[] { @default, one, two }); // zero based, hence explicit 0
// case 0: default: reader.SkipField();
ctx.MarkLabel(@default);
ctx.LoadReader(true);
ctx.EmitCall(typeof(ProtoReader).GetMethod("SkipField", Compiler.ReaderUtil.StateTypeArray));
ctx.Branch(@continue, false);
// case 1: key = ...
ctx.MarkLabel(one);
keyTail.EmitRead(ctx, null);
ctx.StoreValue(key);
ctx.Branch(@continue, false);
// case 2: value = ...
ctx.MarkLabel(two);
Tail.EmitRead(ctx, Tail.RequiresOldValue ? @value : null);
ctx.StoreValue(value);
// (fieldNumber = reader.ReadFieldHeader()) > 0
ctx.MarkLabel(@continue);
ctx.EmitBasicRead("ReadFieldHeader", typeof(int));
ctx.CopyValue();
ctx.StoreValue(fieldNumber);
ctx.LoadValue(0);
ctx.BranchIfGreater(processField, false);
// ProtoReader.EndSubItem(token, reader);
ctx.LoadValue(token);
ctx.LoadReader(true);
ctx.EmitCall(typeof(ProtoReader).GetMethod("EndSubItem",
new[] { typeof(SubItemToken), typeof(ProtoReader), Compiler.ReaderUtil.ByRefStateType }));
// list[key] = value;
ctx.LoadAddress(list, ExpectedType);
ctx.LoadValue(key);
ctx.LoadValue(@value);
ctx.EmitCall(indexerSet);
// while reader.TryReadFieldReader(fieldNumber)
ctx.LoadReader(true);
ctx.LoadValue(this.fieldNumber);
ctx.EmitCall(typeof(ProtoReader).GetMethod("TryReadFieldHeader",
new[] { Compiler.ReaderUtil.ByRefStateType, typeof(int) }));
ctx.BranchIfTrue(redoFromStart, false);
if (ReturnsValue)
{
ctx.LoadValue(list);
}
}
}
void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.EmitWrite(typeof(BclHelpers), "WriteDateTime", valueFrom);
}
} // updates field directly
#if FEAT_COMPILER
void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
Type expected = ExpectedType;
using (Compiler.Local loc = ctx.GetLocalWithValue(expected, valueFrom))
{
// pre-callbacks
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.BeforeSerialize);
Compiler.CodeLabel startFields = ctx.DefineLabel();
// inheritance
if (CanHaveInheritance)
{
for (int i = 0; i < serializers.Length; i++)
{
IProtoSerializer ser = serializers[i];
Type serType = ser.ExpectedType;
if (serType != forType)
{
Compiler.CodeLabel ifMatch = ctx.DefineLabel(), nextTest = ctx.DefineLabel();
ctx.LoadValue(loc);
ctx.TryCast(serType);
ctx.CopyValue();
ctx.BranchIfTrue(ifMatch, true);
ctx.DiscardValue();
ctx.Branch(nextTest, true);
ctx.MarkLabel(ifMatch);
ser.EmitWrite(ctx, null);
ctx.Branch(startFields, false);
ctx.MarkLabel(nextTest);
}
}
if (constructType != null && constructType != forType)
{
using (Compiler.Local actualType = new Compiler.Local(ctx, ctx.MapType(typeof(System.Type))))
{
// would have jumped to "fields" if an expected sub-type, so two options:
// a: *exactly* that type, b: an *unexpected* type
ctx.LoadValue(loc);
ctx.EmitCall(ctx.MapType(typeof(object)).GetMethod("GetType"));
ctx.CopyValue();
ctx.StoreValue(actualType);
ctx.LoadValue(forType);
ctx.BranchIfEqual(startFields, true);
ctx.LoadValue(actualType);
ctx.LoadValue(constructType);
ctx.BranchIfEqual(startFields, true);
}
}
else
{
// would have jumped to "fields" if an expected sub-type, so two options:
// a: *exactly* that type, b: an *unexpected* type
ctx.LoadValue(loc);
ctx.EmitCall(ctx.MapType(typeof(object)).GetMethod("GetType"));
ctx.LoadValue(forType);
ctx.BranchIfEqual(startFields, true);
}
// unexpected, then... note that this *might* be a proxy, which
// is handled by ThrowUnexpectedSubtype
ctx.LoadValue(forType);
ctx.LoadValue(loc);
ctx.EmitCall(ctx.MapType(typeof(object)).GetMethod("GetType"));
ctx.EmitCall(ctx.MapType(typeof(TypeModel)).GetMethod("ThrowUnexpectedSubtype",
BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Static));
}
// fields
ctx.MarkLabel(startFields);
for (int i = 0; i < serializers.Length; i++)
{
IProtoSerializer ser = serializers[i];
if (ser.ExpectedType == forType)
{
ser.EmitWrite(ctx, loc);
}
}
// extension data
if (isExtensible)
{
ctx.LoadValue(loc);
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoWriter)).GetMethod("AppendExtensionData"));
}
// post-callbacks
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.AfterSerialize);
}
}
void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.EmitWrite(ctx.MapType(typeof(BclHelpers)),
wellKnown ? nameof(BclHelpers.WriteTimestamp)
: includeKind ? nameof(BclHelpers.WriteDateTimeWithKind) : nameof(BclHelpers.WriteDateTime), valueFrom);
}
void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.LoadValue(valueFrom);
ctx.EmitCall(toTail);
rootTail.EmitWrite(ctx, null);
}
void IProtoTypeSerializer.EmitCallback(Compiler.CompilerContext ctx, Compiler.Local valueFrom, TypeModel.CallbackType callbackType) => head.EmitCallback(ctx, valueFrom, callbackType);
protected override void EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.LoadAddress(valueFrom, ExpectedType);
ctx.LoadValue(field);
ctx.WriteNullCheckedTail(field.FieldType, Tail, null);
}
void IProtoTypeSerializer.EmitReadRoot(Compiler.CompilerContext ctx, Compiler.Local valueFrom) => head.EmitReadRoot(ctx, valueFrom);
void IRuntimeProtoSerializerNode.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom) => head.EmitRead(ctx, valueFrom);
protected abstract void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom);
void IRuntimeProtoSerializerNode.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.EmitStateBasedWrite(nameof(ProtoWriter.State.WriteInt16), valueFrom);
}
void IProtoTypeSerializer.EmitCallback(Compiler.CompilerContext ctx, Compiler.Local valueFrom, MuffinProtoBuf.Meta.TypeModel.CallbackType callbackType)
{
}
void IRuntimeProtoSerializerNode.EmitRead(Compiler.CompilerContext ctx, Compiler.Local entity)
{
ctx.EmitStateBasedRead(nameof(ProtoReader.State.ReadInt16), ExpectedType);
}
void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.EmitWrite(ctx.MapType(typeof(BclHelpers)), "WriteDecimal", valueFrom);
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.EmitBasicRead(typeof(BclHelpers), "ReadDateTime", ExpectedType);
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.EmitBasicRead(ctx.MapType(typeof(BclHelpers)), "ReadDecimal", ExpectedType);
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
Type expected = ExpectedType;
Helpers.DebugAssert(valueFrom != null);
using (Compiler.Local loc = ctx.GetLocalWithValue(expected, valueFrom))
using (Compiler.Local fieldNumber = new Compiler.Local(ctx, ctx.MapType(typeof(int))))
{
// pre-callbacks
if (HasCallbacks(TypeModel.CallbackType.BeforeDeserialize))
{
if (Helpers.IsValueType(ExpectedType))
{
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.BeforeDeserialize);
}
else
{ // could be null
Compiler.CodeLabel callbacksDone = ctx.DefineLabel();
ctx.LoadValue(loc);
ctx.BranchIfFalse(callbacksDone, false);
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.BeforeDeserialize);
ctx.MarkLabel(callbacksDone);
}
}
Compiler.CodeLabel @continue = ctx.DefineLabel(), processField = ctx.DefineLabel();
ctx.Branch(@continue, false);
ctx.MarkLabel(processField);
foreach (BasicList.Group group in BasicList.GetContiguousGroups(fieldNumbers, serializers))
{
Compiler.CodeLabel tryNextField = ctx.DefineLabel();
int groupItemCount = group.Items.Count;
if (groupItemCount == 1)
{
// discreet group; use an equality test
ctx.LoadValue(fieldNumber);
ctx.LoadValue(group.First);
Compiler.CodeLabel processThisField = ctx.DefineLabel();
ctx.BranchIfEqual(processThisField, true);
ctx.Branch(tryNextField, false);
WriteFieldHandler(ctx, expected, loc, processThisField, @continue, (IProtoSerializer)group.Items[0]);
}
else
{ // implement as a jump-table-based switch
ctx.LoadValue(fieldNumber);
ctx.LoadValue(group.First);
ctx.Subtract(); // jump-tables are zero-based
Compiler.CodeLabel[] jmp = new Compiler.CodeLabel[groupItemCount];
for (int i = 0; i < groupItemCount; i++)
{
jmp[i] = ctx.DefineLabel();
}
ctx.Switch(jmp);
// write the default...
ctx.Branch(tryNextField, false);
for (int i = 0; i < groupItemCount; i++)
{
WriteFieldHandler(ctx, expected, loc, jmp[i], @continue, (IProtoSerializer)group.Items[i]);
}
}
ctx.MarkLabel(tryNextField);
}
EmitCreateIfNull(ctx, loc);
ctx.LoadReaderWriter();
if (isExtensible)
{
ctx.LoadValue(loc);
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("AppendExtensionData"));
}
else
{
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("SkipField"));
}
ctx.MarkLabel(@continue);
ctx.EmitBasicRead("ReadFieldHeader", ctx.MapType(typeof(int)));
ctx.CopyValue();
ctx.StoreValue(fieldNumber);
ctx.LoadValue(0);
ctx.BranchIfGreater(processField, false);
EmitCreateIfNull(ctx, loc);
// post-callbacks
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.AfterDeserialize);
if (valueFrom != null && !loc.IsSame(valueFrom))
{
ctx.LoadValue(loc);
ctx.Cast(valueFrom.Type);
ctx.StoreValue(valueFrom);
}
}
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
TypeCode typeCode = GetTypeCode();
if (map == null)
{
ctx.EmitBasicRead("ReadInt32", typeof(int));
ctx.ConvertFromInt32(typeCode);
}
else
{
int[] wireValues = new int[map.Length];
object[] values = new object[map.Length];
for (int i = 0; i < map.Length; i++)
{
wireValues[i] = map[i].WireValue;
values[i] = map[i].Value;
}
using (Compiler.Local result = new Compiler.Local(ctx, ExpectedType))
using (Compiler.Local wireValue = new Compiler.Local(ctx, typeof(int)))
{
ctx.EmitBasicRead("ReadInt32", typeof(int));
ctx.StoreValue(wireValue);
Compiler.CodeLabel @continue = ctx.DefineLabel();
foreach (BasicList.Group group in BasicList.GetContiguousGroups(wireValues, values))
{
Compiler.CodeLabel tryNextGroup = ctx.DefineLabel();
int groupItemCount = group.Items.Count;
if (groupItemCount == 1)
{
// discreet group; use an equality test
ctx.LoadValue(wireValue);
ctx.LoadValue(group.First);
Compiler.CodeLabel processThisValue = ctx.DefineLabel();
ctx.BranchIfEqual(processThisValue, true);
ctx.Branch(tryNextGroup, false);
WriteEnumValue(ctx, typeCode, processThisValue, @continue, group.Items[0], @result);
}
else
{
// implement as a jump-table-based switch
ctx.LoadValue(wireValue);
ctx.LoadValue(group.First);
ctx.Subtract(); // jump-tables are zero-based
Compiler.CodeLabel[] jmp = new Compiler.CodeLabel[groupItemCount];
for (int i = 0; i < groupItemCount; i++)
{
jmp[i] = ctx.DefineLabel();
}
ctx.Switch(jmp);
// write the default...
ctx.Branch(tryNextGroup, false);
for (int i = 0; i < groupItemCount; i++)
{
WriteEnumValue(ctx, typeCode, jmp[i], @continue, group.Items[i], @result);
}
}
ctx.MarkLabel(tryNextGroup);
}
// throw source.CreateEnumException(ExpectedType, wireValue);
ctx.LoadReaderWriter();
ctx.LoadValue(ExpectedType);
ctx.LoadValue(wireValue);
ctx.EmitCall(typeof(ProtoReader).GetMethod("ThrowEnumException"));
ctx.MarkLabel(@continue);
ctx.LoadValue(result);
}
}
}
protected override void EmitWrite(CompilerContext ctx, Local valueFrom)
{
Type itemType = typeof(KeyValuePair <TKey, TValue>);
MethodInfo moveNext, current, getEnumerator = ListDecorator.GetEnumeratorInfo(
ExpectedType, itemType, out moveNext, out current);
Type enumeratorType = getEnumerator.ReturnType;
MethodInfo key = itemType.GetProperty(nameof(KeyValuePair <TKey, TValue> .Key)).GetGetMethod(),
@value = itemType.GetProperty(nameof(KeyValuePair <TKey, TValue> .Value)).GetGetMethod();
using (Compiler.Local list = ctx.GetLocalWithValue(ExpectedType, valueFrom))
using (Compiler.Local iter = new Compiler.Local(ctx, enumeratorType))
using (Compiler.Local token = new Compiler.Local(ctx, typeof(SubItemToken)))
using (Compiler.Local kvp = new Compiler.Local(ctx, itemType))
{
ctx.LoadAddress(list, ExpectedType);
ctx.EmitCall(getEnumerator, ExpectedType);
ctx.StoreValue(iter);
using (ctx.Using(iter))
{
Compiler.CodeLabel body = ctx.DefineLabel(), next = ctx.DefineLabel();
ctx.Branch(next, false);
ctx.MarkLabel(body);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(current, enumeratorType);
if (itemType != typeof(object) && current.ReturnType == typeof(object))
{
ctx.CastFromObject(itemType);
}
ctx.StoreValue(kvp);
ctx.LoadValue(fieldNumber);
ctx.LoadValue((int)wireType);
ctx.LoadWriter(true);
ctx.EmitCall(Compiler.WriterUtil.GetStaticMethod("WriteFieldHeader"));
ctx.LoadNullRef();
ctx.LoadWriter(true);
ctx.EmitCall(Compiler.WriterUtil.GetStaticMethod("StartSubItem"));
ctx.StoreValue(token);
ctx.LoadAddress(kvp, itemType);
ctx.EmitCall(key, itemType);
ctx.WriteNullCheckedTail(typeof(TKey), keyTail, null);
ctx.LoadAddress(kvp, itemType);
ctx.EmitCall(value, itemType);
ctx.WriteNullCheckedTail(typeof(TValue), Tail, null);
ctx.LoadValue(token);
ctx.LoadWriter(true);
ctx.EmitCall(Compiler.WriterUtil.GetStaticMethod("EndSubItem"));
ctx.MarkLabel(@next);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(moveNext, enumeratorType);
ctx.BranchIfTrue(body, false);
}
}
}
private static void WriteEnumValue(Compiler.CompilerContext ctx, TypeCode typeCode, Compiler.CodeLabel handler, Compiler.CodeLabel @continue, object value, Compiler.Local local)
{
ctx.MarkLabel(handler);
WriteEnumValue(ctx, typeCode, value);
ctx.StoreValue(local);
ctx.Branch(@continue, false); // "continue"
}
protected override void EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.LoadValue(valueFrom);
ctx.LoadValue(typeof(Uri).GetProperty("AbsoluteUri"));
Tail.EmitWrite(ctx, null);
}
private void EmitWriteArrayLoop(Compiler.CompilerContext ctx, Compiler.Local i, Compiler.Local arr)
{
// i = 0
ctx.LoadValue(0);
ctx.StoreValue(i);
// range test is last (to minimise branches)
Compiler.CodeLabel loopTest = ctx.DefineLabel(), processItem = ctx.DefineLabel();
ctx.Branch(loopTest, false);
ctx.MarkLabel(processItem);
// {...}
ctx.LoadArrayValue(arr, i);
if (SupportNull)
{
Tail.EmitWrite(ctx, null);
}
else
{
ctx.WriteNullCheckedTail(itemType, Tail, null);
}
// i++
ctx.LoadValue(i);
ctx.LoadValue(1);
ctx.Add();
ctx.StoreValue(i);
// i < arr.Length
ctx.MarkLabel(loopTest);
ctx.LoadValue(i);
ctx.LoadLength(arr, false);
ctx.BranchIfLess(processItem, false);
}
void IProtoSerializer.EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
ctx.EmitBasicWrite("WriteBoolean", valueFrom);
}
protected override void EmitRead(UcAsp.RPC.ProtoBuf.Compiler.CompilerContext ctx, UcAsp.RPC.ProtoBuf.Compiler.Local valueFrom)
{
Type listType;
#if NO_GENERICS
listType = typeof(BasicList);
#else
listType = ctx.MapType(typeof(System.Collections.Generic.List <>)).MakeGenericType(itemType);
#endif
Type expected = ExpectedType;
using (Compiler.Local oldArr = AppendToCollection ? ctx.GetLocalWithValue(expected, valueFrom) : null)
using (Compiler.Local newArr = new Compiler.Local(ctx, expected))
using (Compiler.Local list = new Compiler.Local(ctx, listType))
{
ctx.EmitCtor(listType);
ctx.StoreValue(list);
ListDecorator.EmitReadList(ctx, list, Tail, listType.GetMethod("Add"), packedWireType, false);
// leave this "using" here, as it can share the "FieldNumber" local with EmitReadList
using (Compiler.Local oldLen = AppendToCollection ? new UcAsp.RPC.ProtoBuf.Compiler.Local(ctx, ctx.MapType(typeof(int))) : null) {
Type[] copyToArrayInt32Args = new Type[] { ctx.MapType(typeof(Array)), ctx.MapType(typeof(int)) };
if (AppendToCollection)
{
ctx.LoadLength(oldArr, true);
ctx.CopyValue();
ctx.StoreValue(oldLen);
ctx.LoadAddress(list, listType);
ctx.LoadValue(listType.GetProperty("Count"));
ctx.Add();
ctx.CreateArray(itemType, null); // length is on the stack
ctx.StoreValue(newArr);
ctx.LoadValue(oldLen);
Compiler.CodeLabel nothingToCopy = ctx.DefineLabel();
ctx.BranchIfFalse(nothingToCopy, true);
ctx.LoadValue(oldArr);
ctx.LoadValue(newArr);
ctx.LoadValue(0); // index in target
ctx.EmitCall(expected.GetMethod("CopyTo", copyToArrayInt32Args));
ctx.MarkLabel(nothingToCopy);
ctx.LoadValue(list);
ctx.LoadValue(newArr);
ctx.LoadValue(oldLen);
}
else
{
ctx.LoadAddress(list, listType);
ctx.LoadValue(listType.GetProperty("Count"));
ctx.CreateArray(itemType, null);
ctx.StoreValue(newArr);
ctx.LoadAddress(list, listType);
ctx.LoadValue(newArr);
ctx.LoadValue(0);
}
copyToArrayInt32Args[0] = expected; // // prefer: CopyTo(T[], int)
MethodInfo copyTo = listType.GetMethod("CopyTo", copyToArrayInt32Args);
if (copyTo == null)
{ // fallback: CopyTo(Array, int)
copyToArrayInt32Args[1] = ctx.MapType(typeof(Array));
copyTo = listType.GetMethod("CopyTo", copyToArrayInt32Args);
}
ctx.EmitCall(copyTo);
}
ctx.LoadValue(newArr);
}
}
protected override void EmitRead(ProtoBuf.Compiler.CompilerContext ctx, ProtoBuf.Compiler.Local valueFrom)
{
/* This looks more complex than it is. Look at the non-compiled Read to
* see what it is trying to do, but note that it needs to cope with a
* few more scenarios. Note that it picks the **most specific** Add,
* unlike the runtime version that uses IList when possible. The core
* is just a "do {list.Add(readValue())} while {thereIsMore}"
*
* The complexity is due to:
* - value types vs reference types (boxing etc)
* - initialization if we need to pass in a value to the tail
* - handling whether or not the tail *returns* the value vs updates the input
*/
bool returnList = ReturnList;
using (Compiler.Local list = AppendToCollection ? ctx.GetLocalWithValue(ExpectedType, valueFrom) : new Compiler.Local(ctx, declaredType))
using (Compiler.Local origlist = (returnList && AppendToCollection && !Helpers.IsValueType(ExpectedType)) ? new Compiler.Local(ctx, ExpectedType) : null)
{
if (!AppendToCollection)
{ // always new
ctx.LoadNullRef();
ctx.StoreValue(list);
}
else if (returnList && origlist != null)
{ // need a copy
ctx.LoadValue(list);
ctx.StoreValue(origlist);
}
if (concreteType != null)
{
ctx.LoadValue(list);
Compiler.CodeLabel notNull = ctx.DefineLabel();
ctx.BranchIfTrue(notNull, true);
ctx.EmitCtor(concreteType);
ctx.StoreValue(list);
ctx.MarkLabel(notNull);
}
bool castListForAdd = !add.DeclaringType.IsAssignableFrom(declaredType);
EmitReadList(ctx, list, Tail, add, packedWireType, castListForAdd);
if (returnList)
{
if (AppendToCollection && origlist != null)
{
// remember ^^^^ we had a spare copy of the list on the stack; now we'll compare
ctx.LoadValue(origlist);
ctx.LoadValue(list); // [orig] [new-value]
Compiler.CodeLabel sameList = ctx.DefineLabel(), allDone = ctx.DefineLabel();
ctx.BranchIfEqual(sameList, true);
ctx.LoadValue(list);
ctx.Branch(allDone, true);
ctx.MarkLabel(sameList);
ctx.LoadNullRef();
ctx.MarkLabel(allDone);
}
else
{
ctx.LoadValue(list);
}
}
}
}
protected override void EmitWrite(ProtoBuf.Compiler.CompilerContext ctx, ProtoBuf.Compiler.Local valueFrom)
{
// int i and T[] arr
using (Compiler.Local arr = ctx.GetLocalWithValue(arrayType, valueFrom))
using (Compiler.Local i = new ProtoBuf.Compiler.Local(ctx, ctx.MapType(typeof(int))))
{
bool writePacked = (options & OPTIONS_WritePacked) != 0;
using (Compiler.Local token = writePacked ? new Compiler.Local(ctx, ctx.MapType(typeof(SubItemToken))) : null)
{
Type mappedWriter = ctx.MapType(typeof(ProtoWriter));
if (writePacked)
{
ctx.LoadValue(fieldNumber);
ctx.LoadValue((int)WireType.String);
ctx.LoadReaderWriter();
ctx.EmitCall(mappedWriter.GetMethod("WriteFieldHeader"));
ctx.LoadValue(arr);
ctx.LoadReaderWriter();
ctx.EmitCall(mappedWriter.GetMethod("StartSubItem"));
ctx.StoreValue(token);
ctx.LoadValue(fieldNumber);
ctx.LoadReaderWriter();
ctx.EmitCall(mappedWriter.GetMethod("SetPackedField"));
}
EmitWriteArrayLoop(ctx, i, arr);
if (writePacked)
{
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(mappedWriter.GetMethod("EndSubItem"));
}
}
}
}
