public override Expression VisitReturnValue(ReturnValue returnValue)
{
// return a default value of the same type as the return value
TypeNode returnType = returnValue.Type;
ITypeParameter itp = returnType as ITypeParameter;
if (itp != null)
{
Local loc = new Local(returnType);
UnaryExpression loca = new UnaryExpression(loc, NodeType.AddressOf, loc.Type.GetReferenceType());
StatementList statements = new StatementList(2);
statements.Add(new AssignmentStatement(new AddressDereference(loca, returnType, false, 0),
new Literal(null, SystemTypes.Object)));
statements.Add(new ExpressionStatement(loc));
return new BlockExpression(new Block(statements), returnType);
}
if (returnType.IsValueType)
return new Literal(0, returnType);
return new Literal(null, returnType);
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (Compiler.Local oldValue = ctx.GetLocalWithValue(expectedType, valueFrom))
using (Compiler.Local token = new Compiler.Local(ctx, ctx.MapType(typeof(SubItemToken))))
using (Compiler.Local field = new Compiler.Local(ctx, ctx.MapType(typeof(int))))
{
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("StartSubItem"));
ctx.StoreValue(token);
Compiler.CodeLabel next = ctx.DefineLabel(), processField = ctx.DefineLabel(), end = ctx.DefineLabel();
ctx.MarkLabel(next);
ctx.EmitBasicRead("ReadFieldHeader", ctx.MapType(typeof(int)));
ctx.CopyValue();
ctx.StoreValue(field);
ctx.LoadValue(Tag); // = 1 - process
ctx.BranchIfEqual(processField, true);
ctx.LoadValue(field);
ctx.LoadValue(1); // < 1 - exit
ctx.BranchIfLess(end, false);
// default: skip
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("SkipField"));
ctx.Branch(next, true);
// process
ctx.MarkLabel(processField);
if (Tail.RequiresOldValue)
{
if (Helpers.IsValueType(expectedType))
{
ctx.LoadAddress(oldValue, expectedType);
ctx.EmitCall(expectedType.GetMethod("GetValueOrDefault", Helpers.EmptyTypes));
}
else
{
ctx.LoadValue(oldValue);
}
}
Tail.EmitRead(ctx, null);
// note we demanded always returns a value
if (Helpers.IsValueType(expectedType))
{
ctx.EmitCtor(expectedType, Tail.ExpectedType); // re-nullable<T> it
}
ctx.StoreValue(oldValue);
ctx.Branch(next, false);
// outro
ctx.MarkLabel(end);
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoReader)).GetMethod("EndSubItem"));
ctx.LoadValue(oldValue); // load the old value
}
}
public override void VisitAssignmentStatement(AssignmentStatement assignment)
{
if (assignment.Target is Local && IsResultExpression(assignment.Source))
{
exemptResultLocal = (Local) assignment.Target;
}
base.VisitAssignmentStatement(assignment);
}
public override Expression VisitLocal(Local local)
{
if (HelperMethods.IsClosureType(this.parentType, local.Type))
{
// don't copy local as we need to share this closure local
return local;
}
return base.VisitLocal(local);
}
internal static void EmitReadList(ProtoBuf.Compiler.CompilerContext ctx, Compiler.Local list, IProtoSerializer tail, MethodInfo add, WireType packedWireType)
{
using (Compiler.Local fieldNumber = new Compiler.Local(ctx, typeof(int)))
{
Compiler.CodeLabel readPacked = packedWireType == WireType.None ? new Compiler.CodeLabel() : ctx.DefineLabel();
if (packedWireType != WireType.None)
{
ctx.LoadReaderWriter();
ctx.LoadValue(typeof(ProtoReader).GetProperty("WireType"));
ctx.LoadValue((int)WireType.String);
ctx.BranchIfEqual(readPacked, false);
}
ctx.LoadReaderWriter();
ctx.LoadValue(typeof(ProtoReader).GetProperty("FieldNumber"));
ctx.StoreValue(fieldNumber);
Compiler.CodeLabel @continue = ctx.DefineLabel();
ctx.MarkLabel(@continue);
EmitReadAndAddItem(ctx, list, tail, add);
ctx.LoadReaderWriter();
ctx.LoadValue(fieldNumber);
ctx.EmitCall(typeof(ProtoReader).GetMethod("TryReadFieldHeader"));
ctx.BranchIfTrue(@continue, false);
if (packedWireType != WireType.None)
{
Compiler.CodeLabel allDone = ctx.DefineLabel();
ctx.Branch(allDone, false);
ctx.MarkLabel(readPacked);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoReader).GetMethod("StartSubItem"));
Compiler.CodeLabel testForData = ctx.DefineLabel(), noMoreData = ctx.DefineLabel();
ctx.MarkLabel(testForData);
ctx.LoadValue((int)packedWireType);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoReader).GetMethod("HasSubValue"));
ctx.BranchIfFalse(noMoreData, false);
EmitReadAndAddItem(ctx, list, tail, add);
ctx.Branch(testForData, false);
ctx.MarkLabel(noMoreData);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoReader).GetMethod("EndSubItem"));
ctx.MarkLabel(allDone);
}
}
}
public override void VisitLocal(Local local)
{
// if the local is a reference to a closure class, then
// don't mark it because it is sure to be used in both
// the contracts and the method body
if (!IsLocalExempt(local) && Locals[local.UniqueKey] == null)
{
//Console.Write("{0} ", local.Name.Name);
Locals[local.UniqueKey] = local;
}
base.VisitLocal(local);
}
/// <summary>
/// check for reused local.
/// HACK: ignore VB cached boolean locals used in tests. VB does this seemingly for debuggability.
/// These are always assigned before use in the same scope, so we ignore them.
/// </summary>
/// <param name="local"></param>
/// <returns></returns>
public override void VisitLocal(Local local)
{
if (gatherLocals.Locals[local.UniqueKey] != null)
{
if (local.Name != null && local.Name.Name.StartsWith("VB$CG$"))
{
// ignore VB compiler generated locals.
}
else
{
reUseOfExistingLocal = local;
}
}
base.VisitLocal(local);
}
void IProtoSerializer.EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
Helpers.DebugAssert(valueFrom != null); // don't support stack-head for this
using (Compiler.Local converted = new Compiler.Local(ctx, tail.ExpectedType)) // declare/re-use local
{
ctx.LoadValue(valueFrom); // load primary onto stack
ctx.EmitCall(toTail); // static convert op, primary-to-surrogate
ctx.StoreValue(converted); // store into surrogate local
tail.EmitRead(ctx, converted); // downstream processing against surrogate local
ctx.LoadValue(converted); // load from surrogate local
ctx.EmitCall(fromTail); // static convert op, surrogate-to-primary
ctx.StoreValue(valueFrom); // store back into primary
}
}
public override void VisitLocal(Local local)
{
// if the local is a reference to a closure class, then
// don't mark it because it is sure to be used in both
// the contracts and the method body.
// Another exception for this rule is an expression initialization
// that also introduces local variable that could be used in Contract.Requires
if (!IsLocalExempt(local) && Locals[local.UniqueKey] == null)
{
//Console.Write("{0} ", local.Name.Name);
Locals[local.UniqueKey] = local;
}
base.VisitLocal(local);
}
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, typeof(int)))
{
if (packedFieldNumber > 0)
{
Compiler.CodeLabel allDone = ctx.DefineLabel();
ctx.LoadLength(arr, false);
ctx.BranchIfFalse(allDone, false);
ctx.LoadValue(packedFieldNumber);
ctx.LoadValue((int)WireType.String);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("WriteFieldHeader"));
ctx.LoadValue(arr);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("StartSubItem"));
using (Compiler.Local token = new Compiler.Local(ctx, typeof(SubItemToken))) {
ctx.StoreValue(token);
ctx.LoadValue(packedFieldNumber);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("SetPackedField"));
EmitWriteArrayLoop(ctx, i, arr);
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("EndSubItem"));
}
ctx.MarkLabel(allDone);
}
else
{
EmitWriteArrayLoop(ctx, i, arr);
}
}
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (Compiler.Local loc = ctx.GetLocalWithValue(ExpectedType, valueFrom))
{
if (Tail.RequiresOldValue)
{
ctx.LoadAddress(loc, ExpectedType);
ctx.LoadValue(field);
}
// value is either now on the stack or not needed
ctx.ReadNullCheckedTail(field.FieldType, Tail, null);
if (Tail.ReturnsValue)
{
using (Compiler.Local newVal = new Compiler.Local(ctx, field.FieldType))
{
ctx.StoreValue(newVal);
if (Helpers.IsValueType(field.FieldType))
{
ctx.LoadAddress(loc, ExpectedType);
ctx.LoadValue(newVal);
ctx.StoreValue(field);
}
else
{
Compiler.CodeLabel allDone = ctx.DefineLabel();
ctx.LoadValue(newVal);
ctx.BranchIfFalse(allDone, true); // interpret null as "don't assign"
ctx.LoadAddress(loc, ExpectedType);
ctx.LoadValue(newVal);
ctx.StoreValue(field);
ctx.MarkLabel(allDone);
}
}
}
}
}
/// <summary>
/// Use stricter checking if local has a real name (other than "localXXX")
/// </summary>
private bool IsLocalExempt(Local local)
{
if (local == exemptResultLocal) return true;
bool strict = false;
if (local.Name != null && local.Name.Name != null && !local.Name.Name.StartsWith("local"))
{
strict = true;
}
var localType = local.Type;
if (localType == null) return true;
return HelperMethods.IsCompilerGenerated(localType)
|| local.Name.Name == "_preConditionHolds"
// introduced by extractor itself for legacy pre-conditions
|| (strict
? (LocalNameIsExempt(local.Name.Name))
: (HelperMethods.IsDelegateType(localType)
|| HelperMethods.IsTypeParameterType(localType)
|| localType.IsValueType));
}
public void Dispose()
{
if (local == null || ctx == null) return;
ctx.EndTry(label, false);
ctx.BeginFinally();
Type disposableType = ctx.MapType(typeof (IDisposable));
MethodInfo dispose = disposableType.GetMethod("Dispose");
Type type = local.Type;
// remember that we've already (in the .ctor) excluded the case
// where it *cannot* be disposable
if (type.IsValueType)
{
ctx.LoadAddress(local, type);
switch (ctx.MetadataVersion)
{
case ILVersion.Net1:
ctx.LoadValue(local);
ctx.CastToObject(type);
break;
default:
#if FX11
throw new NotSupportedException();
#else
ctx.Constrain(type);
break;
#endif
}
ctx.EmitCall(dispose);
}
else
{
Compiler.CodeLabel @null = ctx.DefineLabel();
if (disposableType.IsAssignableFrom(type))
{ // *known* to be IDisposable; just needs a null-check
ctx.LoadValue(local);
ctx.BranchIfFalse(@null, true);
ctx.LoadAddress(local, type);
}
else
{ // *could* be IDisposable; test via "as"
using (Compiler.Local disp = new Compiler.Local(ctx, disposableType))
{
ctx.LoadValue(local);
ctx.TryCast(disposableType);
ctx.CopyValue();
ctx.StoreValue(disp);
ctx.BranchIfFalse(@null, true);
ctx.LoadAddress(disp, disposableType);
}
}
ctx.EmitCall(dispose);
ctx.MarkLabel(@null);
}
ctx.EndFinally();
this.local = null;
this.ctx = null;
label = new CodeLabel(); // default
}
public void EmitRead(Compiler.CompilerContext ctx, Compiler.Local incoming)
{
using (Compiler.Local objValue = ctx.GetLocalWithValue(ExpectedType, incoming))
{
Compiler.Local[] locals = new Compiler.Local[members.Length];
try
{
for (int i = 0; i < locals.Length; i++)
{
Type type = GetMemberType(i);
bool store = true;
locals[i] = new Compiler.Local(ctx, type);
if (!Helpers.IsValueType(ExpectedType))
{
// value-types always read the old value
if (Helpers.IsValueType(type))
{
switch (Helpers.GetTypeCode(type))
{
case ProtoTypeCode.Boolean:
case ProtoTypeCode.Byte:
case ProtoTypeCode.Int16:
case ProtoTypeCode.Int32:
case ProtoTypeCode.SByte:
case ProtoTypeCode.UInt16:
case ProtoTypeCode.UInt32:
ctx.LoadValue(0);
break;
case ProtoTypeCode.Int64:
case ProtoTypeCode.UInt64:
ctx.LoadValue(0L);
break;
case ProtoTypeCode.Single:
ctx.LoadValue(0.0F);
break;
case ProtoTypeCode.Double:
ctx.LoadValue(0.0D);
break;
case ProtoTypeCode.Decimal:
ctx.LoadValue(0M);
break;
case ProtoTypeCode.Guid:
ctx.LoadValue(Guid.Empty);
break;
default:
ctx.LoadAddress(locals[i], type);
ctx.EmitCtor(type);
store = false;
break;
}
}
else
{
ctx.LoadNullRef();
}
if (store)
{
ctx.StoreValue(locals[i]);
}
}
}
Compiler.CodeLabel skipOld = Helpers.IsValueType(ExpectedType)
? new Compiler.CodeLabel()
: ctx.DefineLabel();
if (!Helpers.IsValueType(ExpectedType))
{
ctx.LoadAddress(objValue, ExpectedType);
ctx.BranchIfFalse(skipOld, false);
}
for (int i = 0; i < members.Length; i++)
{
ctx.LoadAddress(objValue, ExpectedType);
if (members[i] is FieldInfo)
{
ctx.LoadValue((FieldInfo)members[i]);
}
else if (members[i] is PropertyInfo)
{
ctx.LoadValue((PropertyInfo)members[i]);
}
ctx.StoreValue(locals[i]);
}
if (!Helpers.IsValueType(ExpectedType)) ctx.MarkLabel(skipOld);
using (Compiler.Local fieldNumber = new Compiler.Local(ctx, ctx.MapType(typeof(int))))
{
Compiler.CodeLabel @continue = ctx.DefineLabel(),
processField = ctx.DefineLabel(),
notRecognised = ctx.DefineLabel();
ctx.Branch(@continue, false);
Compiler.CodeLabel[] handlers = new Compiler.CodeLabel[members.Length];
for (int i = 0; i < members.Length; i++)
{
handlers[i] = ctx.DefineLabel();
}
ctx.MarkLabel(processField);
ctx.LoadValue(fieldNumber);
ctx.LoadValue(1);
ctx.Subtract(); // jump-table is zero-based
ctx.Switch(handlers);
// and the default:
ctx.Branch(notRecognised, false);
for (int i = 0; i < handlers.Length; i++)
{
ctx.MarkLabel(handlers[i]);
IProtoSerializer tail = tails[i];
Compiler.Local oldValIfNeeded = tail.RequiresOldValue ? locals[i] : null;
ctx.ReadNullCheckedTail(locals[i].Type, tail, oldValIfNeeded);
if (tail.ReturnsValue)
{
if (Helpers.IsValueType(locals[i].Type))
{
ctx.StoreValue(locals[i]);
}
else
{
Compiler.CodeLabel hasValue = ctx.DefineLabel(), allDone = ctx.DefineLabel();
ctx.CopyValue();
ctx.BranchIfTrue(hasValue, true); // interpret null as "don't assign"
ctx.DiscardValue();
ctx.Branch(allDone, true);
ctx.MarkLabel(hasValue);
ctx.StoreValue(locals[i]);
ctx.MarkLabel(allDone);
}
}
ctx.Branch(@continue, false);
}
ctx.MarkLabel(notRecognised);
ctx.LoadReaderWriter();
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);
}
for (int i = 0; i < locals.Length; i++)
{
ctx.LoadValue(locals[i]);
}
ctx.EmitCtor(ctor);
ctx.StoreValue(objValue);
}
finally
{
for (int i = 0; i < locals.Length; i++)
{
if (locals[i] != null)
locals[i].Dispose(); // release for re-use
}
}
}
}
private static MethodBuilder EmitBoxedSerializer(TypeBuilder type, int i, Type valueType, SerializerPair[] methodPairs, TypeModel model, Compiler.CompilerContext.ILVersion ilVersion, string assemblyName)
{
MethodInfo dedicated = methodPairs[i].Deserialize;
MethodBuilder boxedSerializer = type.DefineMethod("_" + i.ToString(), MethodAttributes.Static, CallingConventions.Standard,
model.MapType(typeof(object)), new Type[] { model.MapType(typeof(object)), model.MapType(typeof(ProtoReader)) });
Compiler.CompilerContext ctx = new Compiler.CompilerContext(boxedSerializer.GetILGenerator(), true, false, methodPairs, model, ilVersion, assemblyName, model.MapType(typeof(object)));
ctx.LoadValue(ctx.InputValue);
Compiler.CodeLabel @null = ctx.DefineLabel();
ctx.BranchIfFalse(@null, true);
Type mappedValueType = valueType;
ctx.LoadValue(ctx.InputValue);
ctx.CastFromObject(mappedValueType);
ctx.LoadReaderWriter();
ctx.EmitCall(dedicated);
ctx.CastToObject(mappedValueType);
ctx.Return();
ctx.MarkLabel(@null);
using (Compiler.Local typedVal = new Compiler.Local(ctx, mappedValueType))
{
// create a new valueType
ctx.LoadAddress(typedVal, mappedValueType);
ctx.EmitCtor(mappedValueType);
ctx.LoadValue(typedVal);
ctx.LoadReaderWriter();
ctx.EmitCall(dedicated);
ctx.CastToObject(mappedValueType);
ctx.Return();
}
return boxedSerializer;
}
public override Expression VisitLocal(Local local)
{
var result = base.VisitLocal(local);
var asLoc = result as Local;
if (asLoc != null && RemoveNameForLocals)
{
asLoc.Name = null; // Don't clash with original local name
}
return result;
}
protected override void EmitWrite(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using(Compiler.Local valOrNull = ctx.GetLocalWithValue(expectedType, valueFrom))
using(Compiler.Local token = new Compiler.Local(ctx, ctx.MapType(typeof(SubItemToken))))
{
ctx.LoadNullRef();
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoWriter)).GetMethod("StartSubItem"));
ctx.StoreValue(token);
if (Helpers.IsValueType(expectedType))
{
ctx.LoadAddress(valOrNull, expectedType);
ctx.LoadValue(expectedType.GetProperty("HasValue"));
}
else
{
ctx.LoadValue(valOrNull);
}
Compiler.CodeLabel @end = ctx.DefineLabel();
ctx.BranchIfFalse(@end, false);
if (Helpers.IsValueType(expectedType))
{
ctx.LoadAddress(valOrNull, expectedType);
ctx.EmitCall(expectedType.GetMethod("GetValueOrDefault", Helpers.EmptyTypes));
}
else
{
ctx.LoadValue(valOrNull);
}
Tail.EmitWrite(ctx, null);
ctx.MarkLabel(@end);
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(ctx.MapType(typeof(ProtoWriter)).GetMethod("EndSubItem"));
}
}
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];
if (ser.ExpectedType != forType)
{
Compiler.CodeLabel ifMatch = ctx.DefineLabel(), nextTest = ctx.DefineLabel();
ctx.LoadValue(loc);
ctx.TryCast(ser.ExpectedType);
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, typeof(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(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(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(typeof(object).GetMethod("GetType"));
ctx.EmitCall(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(typeof(ProtoWriter).GetMethod("AppendExtensionData"));
}
// post-callbacks
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.AfterSerialize);
}
}
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);
}
}
}
private static void EmitReadAndAddItem(Compiler.CompilerContext ctx, Compiler.Local list, IProtoSerializer tail, MethodInfo add)
{
ctx.LoadValue(list);
Type itemType = tail.ExpectedType;
if (tail.RequiresOldValue)
{
if (itemType.IsValueType || !tail.ReturnsValue)
{
// going to need a variable
using (Compiler.Local item = new Compiler.Local(ctx, itemType))
{
if (itemType.IsValueType)
{ // initialise the struct
ctx.LoadAddress(item, itemType);
ctx.EmitCtor(itemType);
}
else
{ // assign null
ctx.LoadNullRef();
ctx.StoreValue(item);
}
tail.EmitRead(ctx, item);
if (!tail.ReturnsValue) { ctx.LoadValue(item); }
}
}
else
{ // no variable; pass the null on the stack and take the value *off* the stack
ctx.LoadNullRef();
tail.EmitRead(ctx, null);
}
}
else
{
if (tail.ReturnsValue)
{ // out only (on the stack); just emit it
tail.EmitRead(ctx, null);
}
else
{ // doesn't take anything in nor return anything! WTF?
throw new InvalidOperationException();
}
}
// our "Add" is chosen either to take the correct type, or to take "object";
// we may need to box the value
Type addParamType = add.GetParameters()[0].ParameterType;
if(addParamType != itemType) {
if (addParamType == typeof(object))
{
ctx.CastToObject(itemType);
}
else
{
throw new InvalidOperationException("Conflicting item/add type");
}
}
ctx.EmitCall(add);
if (add.ReturnType != typeof(void))
{
ctx.DiscardValue();
}
}
private static MethodBuilder EmitBoxedSerializer(TypeBuilder type, int i, Type valueType, SerializerPair[] methodPairs)
{
MethodInfo dedicated = methodPairs[i].Deserialize;
MethodBuilder boxedSerializer = type.DefineMethod("_" + i, MethodAttributes.Static, CallingConventions.Standard,
typeof(object), new Type[] { typeof(object), typeof(ProtoReader) });
Compiler.CompilerContext ctx = new Compiler.CompilerContext(boxedSerializer.GetILGenerator(), true, false, methodPairs);
ctx.LoadValue(Compiler.Local.InputValue);
Compiler.CodeLabel @null = ctx.DefineLabel();
ctx.BranchIfFalse(@null, true);
ctx.LoadValue(Compiler.Local.InputValue);
ctx.CastFromObject(valueType);
ctx.LoadReaderWriter();
ctx.EmitCall(dedicated);
ctx.CastToObject(valueType);
ctx.Return();
ctx.MarkLabel(@null);
using(Compiler.Local typedVal = new Compiler.Local(ctx, valueType))
{
// create a new valueType
ctx.LoadAddress(typedVal, valueType);
ctx.EmitCtor(valueType);
ctx.LoadValue(typedVal);
ctx.LoadReaderWriter();
ctx.EmitCall(dedicated);
ctx.CastToObject(valueType);
ctx.Return();
}
return boxedSerializer;
}
public virtual Expression VisitLocal(Local local)
{
if (local == null) return null;
local.Type = this.VisitTypeReference(local.Type);
LocalBinding lb = local as LocalBinding;
if (lb != null)
{
Local loc = this.VisitLocal(lb.BoundLocal) as Local;
if (loc != null)
lb.BoundLocal = loc;
}
return local;
}
protected override void EmitWrite(ProtoBuf.Compiler.CompilerContext ctx, ProtoBuf.Compiler.Local valueFrom)
{
if (arrayType.GetArrayRank() > 1)
{
return;
}
// int i and T[] arr
using (Compiler.Local arr = ctx.GetLocalWithValue(arrayType, valueFrom))
using (Compiler.Local len = new Compiler.Local(ctx, typeof(int)))
using (Compiler.Local i = new ProtoBuf.Compiler.Local(ctx, typeof(int)))
using (Compiler.Local writeObject = new Compiler.Local(ctx, typeof(bool)))
{
// int len = arr.Count;
ctx.LoadValue(arr);
ctx.LoadValue(arrayType.GetProperty("Length"));
ctx.StoreValue(len);
// writeObject = true;
ctx.LoadValue(true);
ctx.StoreValue(writeObject);
bool writePacked = (options & OPTIONS_WritePacked) != 0;
using (Compiler.Local token = writePacked ? new Compiler.Local(ctx, typeof(SubItemToken)) : null)
{
if (writePacked)
{
ctx.LoadValue(fieldNumber);
ctx.LoadValue((int)WireType.String);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("WriteFieldHeader"));
ctx.LoadValue(arr);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("StartSubItem"));
ctx.StoreValue(token);
ctx.LoadValue(fieldNumber);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("SetPackedField"));
}
else
{
ctx.LoadValue(fieldNumber);
ctx.LoadValue((int)WireType.Variant);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("WriteFieldHeader"));
if (AsReference)
{
using (Compiler.Local existing = new Compiler.Local(ctx, typeof(bool)))
using (Compiler.Local objectKey = new Compiler.Local(ctx, typeof(int)))
{
//int objectKey = dest.NetCache.AddObjectKey(value, out existing);
ctx.LoadReaderWriter();
ctx.LoadValue(typeof(ProtoWriter).GetProperty("NetCache")); //dest.NetCache
ctx.LoadValue(arr);
ctx.LoadAddress(existing, typeof(bool));
ctx.EmitCall(typeof(NetObjectCache).GetMethod("AddObjectKey", new Type[] { typeof(object), typeof(bool).MakeByRefType() }));
ctx.StoreValue(objectKey);
//writeObject = !existing;
ctx.LoadValue(existing);
Compiler.CodeLabel @writeBoolean = ctx.DefineLabel();
Compiler.CodeLabel @trueCase = ctx.DefineLabel();
ctx.BranchIfTrue(@trueCase, true);
ctx.LoadValue(true);
ctx.Branch(@writeBoolean, true);
ctx.MarkLabel(@trueCase);
ctx.LoadValue(false);
ctx.MarkLabel(@writeBoolean);
ctx.StoreValue(writeObject);
//ProtoWriter.WriteUInt32(existing ? (uint)objectKey : 0, dest);
using (Compiler.Local valueToWrite = new Compiler.Local(ctx, typeof(uint)))
{
ctx.LoadValue(0);
ctx.StoreValue(valueToWrite);
Compiler.CodeLabel @endValueWrite = ctx.DefineLabel();
ctx.LoadValue(existing);
ctx.BranchIfFalse(@endValueWrite, true);
ctx.LoadValue(objectKey);
ctx.CastToObject(typeof(uint));
ctx.StoreValue(valueToWrite);
ctx.MarkLabel(@endValueWrite);
ctx.LoadValue(valueToWrite);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("WriteUInt32"));
}
}
}
else
{
// bool isEmpty = len == 0;
// ProtoWriter.WriteBoolean(isEmpty, dest);
ctx.LoadValue(len);
ctx.LoadValue(0);
ctx.TestEqual();
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("WriteBoolean"));
}
}
Compiler.CodeLabel @endWrite = ctx.DefineLabel();
ctx.LoadValue(writeObject);
ctx.BranchIfFalse(@endWrite, false);
EmitWriteArrayLoop(ctx, i, arr);
ctx.MarkLabel(@endWrite);
if (writePacked)
{
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("EndSubItem"));
}
}
}
}
private void EmitReadArray(Compiler.CompilerContext ctx, Compiler.Local list, Compiler.Local oldArr,
Compiler.Local newArr, IProtoSerializer tail, MethodInfo add, Type listType)
{
Compiler.CodeLabel readPacked = packedWireType == WireType.None ? new Compiler.CodeLabel() : ctx.DefineLabel();
Compiler.CodeLabel @end = ctx.DefineLabel();
if (packedWireType != WireType.None)
{
ctx.LoadReaderWriter();
ctx.LoadValue(typeof(ProtoReader).GetProperty("WireType"));
ctx.LoadValue((int)WireType.String);
ctx.BranchIfEqual(readPacked, false);
}
using (Compiler.Local fieldNumber = new Compiler.Local(ctx, typeof(int)))
{
// int fieldNumber = source.FieldNumber;
ctx.LoadReaderWriter();
ctx.LoadValue(typeof (ProtoReader).GetProperty("FieldNumber"));
ctx.StoreValue(fieldNumber);
using (Compiler.Local readObject = new Compiler.Local(ctx, typeof (bool)))
using (Compiler.Local arrayKey = new Compiler.Local(ctx, typeof (int)))
{
// bool readObject = true;
ctx.LoadValue(true);
ctx.StoreValue(readObject);
// value = value ?? Array.CreateInstance(itemType, 0);
Compiler.CodeLabel @endCreateInstance = ctx.DefineLabel();
ctx.LoadValue(oldArr);
ctx.LoadNullRef();
ctx.TestEqual();
ctx.BranchIfFalse(@endCreateInstance, true);
ctx.LoadValue(itemType);
ctx.LoadValue(0);
ctx.EmitCall(typeof(Array).GetMethod("CreateInstance", new Type[] { typeof(Type), typeof(int) }));
ctx.StoreValue(oldArr);
ctx.MarkLabel(@endCreateInstance);
if (AsReference)
{
using (Compiler.Local objectKey = new Compiler.Local(ctx, typeof(int)))
{
//int objectKey = source.ReadInt32();
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoReader).GetMethod("ReadInt32"));
ctx.StoreValue(objectKey);
Compiler.CodeLabel @ifNotThere = ctx.DefineLabel();
Compiler.CodeLabel @endIf = ctx.DefineLabel();
//if (objectKey > 0)
ctx.LoadValue(objectKey);
ctx.LoadValue(0);
ctx.BranchIfLessOrEqual(@ifNotThere, true);
// value = source.NetCache.GetKeyedObject(objectKey);
ctx.LoadReaderWriter();
ctx.LoadValue(typeof(ProtoReader).GetProperty("NetCache"));
ctx.LoadValue(objectKey);
ctx.EmitCall(typeof(NetObjectCache).GetMethod("GetKeyedObject"));
ctx.StoreValue(oldArr);
//readObject = false;
ctx.LoadValue(false);
ctx.StoreValue(readObject);
//}
ctx.Branch(@endIf, true);
//else
ctx.MarkLabel(@ifNotThere);
//bool dummy;
//arrayKey = source.NetCache.AddObjectKey(value, out dummy);
using (Compiler.Local dummy = new Compiler.Local(ctx, typeof(bool)))
{
ctx.LoadReaderWriter();
ctx.LoadValue(typeof(ProtoReader).GetProperty("NetCache"));
ctx.LoadValue(oldArr);
ctx.LoadAddress(dummy, typeof(bool));
ctx.EmitCall(typeof(NetObjectCache).GetMethod("AddObjectKey", new Type[] { typeof(object), typeof(bool).MakeByRefType() }));
ctx.StoreValue(arrayKey);
}
ctx.MarkLabel(@endIf);
}
}
else
{
using (Compiler.Local readValue = new Compiler.Local(ctx, typeof(int)))
{
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoReader).GetMethod("ReadInt32"));
ctx.StoreValue(readValue);
Compiler.CodeLabel @codeContinues = ctx.DefineLabel();
ctx.LoadValue(readValue);
ctx.LoadValue(0);
ctx.BranchIfEqual(@codeContinues, true);
ctx.LoadValue(oldArr);
ctx.Branch(@end, false);
ctx.MarkLabel(@codeContinues);
}
}
/*
if (readObject)
{
while (source.TryReadFieldHeader(field))
{
list.Add(Tail.Read(null, source));
}
*/
Compiler.CodeLabel @finishRead = ctx.DefineLabel();
ctx.LoadValue(readObject);
ctx.BranchIfFalse(@finishRead, false);
Compiler.CodeLabel @beginWhileLoop = ctx.DefineLabel();
Compiler.CodeLabel @endWhileLoop = ctx.DefineLabel();
ctx.MarkLabel(@beginWhileLoop);
ctx.LoadReaderWriter();
ctx.LoadValue(fieldNumber);
ctx.EmitCall(typeof (ProtoReader).GetMethod("TryReadFieldHeader"));
ctx.BranchIfFalse(@endWhileLoop, false);
ListDecorator.EmitReadAndAddItem(ctx, list, tail, add, null);
ctx.Branch(@beginWhileLoop, false);
ctx.MarkLabel(@endWhileLoop);
// Array newArray = Array.CreateInstance(itemType, list.Count);
ctx.LoadValue(itemType);
ctx.LoadValue(list);
ctx.LoadValue(listType.GetProperty("Count"));
ctx.EmitCall(typeof(Array).GetMethod("CreateInstance", new Type[] { typeof(Type), typeof(int) }));
ctx.StoreValue(newArr);
// list.CopyTo(newArray, 0);
ctx.LoadValue(list);
ctx.LoadValue(newArr);
ctx.LoadValue(0);
ctx.EmitCall(listType.GetMethod("CopyTo", new Type[] { ExpectedType, typeof(int) }));
if (AsReference)
{
//source.NetCache.UpdateKeyedObject(arrayKey, value, newArray);
ctx.LoadReaderWriter();
ctx.LoadValue(typeof(ProtoReader).GetProperty("NetCache"));
ctx.LoadValue(arrayKey);
ctx.LoadValue(oldArr);
ctx.LoadValue(newArr);
ctx.EmitCall(typeof(NetObjectCache).GetMethod("UpdateKeyedObject"));
}
//value = newArray;
ctx.LoadValue(newArr);
ctx.StoreValue(oldArr);
ctx.MarkLabel(@finishRead);
ctx.LoadValue(oldArr);
ctx.MarkLabel(@end);
}
}
if (packedWireType != WireType.None)
{
Compiler.CodeLabel allDone = ctx.DefineLabel();
ctx.Branch(allDone, false);
ctx.MarkLabel(readPacked);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("StartSubItem"));
Compiler.CodeLabel testForData = ctx.DefineLabel(), noMoreData = ctx.DefineLabel();
ctx.MarkLabel(testForData);
ctx.LoadValue((int) packedWireType);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("HasSubValue"));
ctx.BranchIfFalse(noMoreData, false);
ListDecorator.EmitReadAndAddItem(ctx, list, tail, add, null);
ctx.Branch(testForData, false);
ctx.MarkLabel(noMoreData);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("EndSubItem"));
EmitReadEndPacked(ctx, list, oldArr, newArr, listType);
ctx.MarkLabel(allDone);
}
}
protected override void EmitRead(ProtoBuf.Compiler.CompilerContext ctx, ProtoBuf.Compiler.Local valueFrom)
{
if (arrayType.GetArrayRank() > 1)
{
return;
}
Type listType;
#if NO_GENERICS
listType = typeof(BasicList);
#else
listType = typeof (System.Collections.Generic.List<>).MakeGenericType(itemType);
#endif
if (nested)
{
ctx.LoadReaderWriter();
ctx.EmitCall(typeof (ProtoReader).GetMethod("ReadFieldHeader"));
ctx.DiscardValue();
}
using (Compiler.Local oldArr = AppendToCollection ? ctx.GetLocalWithValue(ExpectedType, valueFrom) : null)
using (Compiler.Local newArr = new Compiler.Local(ctx, ExpectedType))
using (Compiler.Local list = new Compiler.Local(ctx, listType))
{
ctx.EmitCtor(listType);
ctx.StoreValue(list);
EmitReadArray(ctx, list, oldArr, newArr, Tail, listType.GetMethod("Add"), listType);
}
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
bool writeValue;
SanityCheck(ctx.Model, property, Tail, out writeValue, ctx.NonPublic, ctx.AllowInternal(property));
if (ExpectedType.IsValueType && valueFrom == null)
{
throw new InvalidOperationException("Attempt to mutate struct on the head of the stack; changes would be lost");
}
using (Compiler.Local loc = ctx.GetLocalWithValue(ExpectedType, valueFrom))
{
if (Tail.RequiresOldValue)
{
ctx.LoadAddress(loc, ExpectedType); // stack is: old-addr
ctx.LoadValue(property); // stack is: old-value
}
Type propertyType = property.PropertyType;
ctx.ReadNullCheckedTail(propertyType, Tail, null); // stack is [new-value]
if (writeValue)
{
using (Compiler.Local newVal = new Compiler.Local(ctx, property.PropertyType))
{
ctx.StoreValue(newVal); // stack is empty
Compiler.CodeLabel allDone = new Compiler.CodeLabel(); // <=== default structs
if (!propertyType.IsValueType)
{ // if the tail returns a null, intepret that as *no assign*
allDone = ctx.DefineLabel();
ctx.LoadValue(newVal); // stack is: new-value
ctx.BranchIfFalse(@allDone, true); // stack is empty
}
// assign the value
ctx.LoadAddress(loc, ExpectedType); // parent-addr
ctx.LoadValue(newVal); // parent-obj|new-value
if (shadowSetter == null)
{
ctx.StoreValue(property); // empty
}
else
{
ctx.EmitCall(shadowSetter); // empty
}
if (!propertyType.IsValueType)
{
ctx.MarkLabel(allDone);
}
}
}
else
{ // don't want return value; drop it if anything there
// stack is [new-value]
if (Tail.ReturnsValue) { ctx.DiscardValue(); }
}
}
}
protected override void EmitRead(ProtoBuf.Compiler.CompilerContext ctx, 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 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 EmitWrite(ProtoBuf.Compiler.CompilerContext ctx, ProtoBuf.Compiler.Local valueFrom)
{
using (Compiler.Local list = ctx.GetLocalWithValue(ExpectedType, valueFrom))
{
MethodInfo moveNext, current, getEnumerator = GetEnumeratorInfo(out moveNext, out current);
Helpers.DebugAssert(moveNext != null);
Helpers.DebugAssert(current != null);
Helpers.DebugAssert(getEnumerator != null);
Type enumeratorType = getEnumerator.ReturnType;
bool writePacked = WritePacked;
using (Compiler.Local iter = new Compiler.Local(ctx, enumeratorType))
using (Compiler.Local token = writePacked ? new Compiler.Local(ctx, typeof(SubItemToken)) : null)
{
if (writePacked)
{
ctx.LoadValue(fieldNumber);
ctx.LoadValue((int)WireType.String);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("WriteFieldHeader"));
ctx.LoadValue(list);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("StartSubItem"));
ctx.StoreValue(token);
ctx.LoadValue(fieldNumber);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("SetPackedField"));
}
ctx.LoadAddress(list, ExpectedType);
ctx.EmitCall(getEnumerator);
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);
Type itemType = Tail.ExpectedType;
if (itemType != typeof(object) && current.ReturnType == typeof(object))
{
ctx.CastFromObject(itemType);
}
Tail.EmitWrite(ctx, null);
ctx.MarkLabel(@next);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(moveNext);
ctx.BranchIfTrue(body, false);
}
if (writePacked)
{
ctx.LoadValue(token);
ctx.LoadReaderWriter();
ctx.EmitCall(typeof(ProtoWriter).GetMethod("EndSubItem"));
}
}
}
}
protected override void EmitRead(Compiler.CompilerContext ctx, Compiler.Local valueFrom)
{
using (Compiler.Local oldList = AppendToCollection ? ctx.GetLocalWithValue(ExpectedType, valueFrom) : null)
using(Compiler.Local builder = new Compiler.Local(ctx, builderFactory.ReturnType))
{
ctx.EmitCall(builderFactory);
ctx.StoreValue(builder);
if(AppendToCollection)
{
Compiler.CodeLabel done = ctx.DefineLabel();
if(!ExpectedType.IsValueType)
{
ctx.LoadValue(oldList);
ctx.BranchIfFalse(done, false); // old value null; nothing to add
}
PropertyInfo prop = Helpers.GetProperty(ExpectedType, "Length", false);
if(prop == null) prop = Helpers.GetProperty(ExpectedType, "Count", false);
#if !NO_GENERICS
if (prop == null) prop = Helpers.GetProperty(ResolveIReadOnlyCollection(ExpectedType, Tail.ExpectedType), "Count", false);
#endif
ctx.LoadAddress(oldList, oldList.Type);
ctx.EmitCall(Helpers.GetGetMethod(prop, false, false));
ctx.BranchIfFalse(done, false); // old list is empty; nothing to add
Type voidType = ctx.MapType(typeof(void));
if(addRange != null)
{
ctx.LoadValue(builder);
ctx.LoadValue(oldList);
ctx.EmitCall(addRange);
if (addRange.ReturnType != null && add.ReturnType != voidType) ctx.DiscardValue();
}
else
{
// loop and call Add repeatedly
MethodInfo moveNext, current, getEnumerator = GetEnumeratorInfo(ctx.Model, out moveNext, out current);
Helpers.DebugAssert(moveNext != null);
Helpers.DebugAssert(current != null);
Helpers.DebugAssert(getEnumerator != null);
Type enumeratorType = getEnumerator.ReturnType;
using (Compiler.Local iter = new Compiler.Local(ctx, enumeratorType))
{
ctx.LoadAddress(oldList, ExpectedType);
ctx.EmitCall(getEnumerator);
ctx.StoreValue(iter);
using (ctx.Using(iter))
{
Compiler.CodeLabel body = ctx.DefineLabel(), next = ctx.DefineLabel();
ctx.Branch(next, false);
ctx.MarkLabel(body);
ctx.LoadAddress(builder, builder.Type);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(current);
ctx.EmitCall(add);
if (add.ReturnType != null && add.ReturnType != voidType) ctx.DiscardValue();
ctx.MarkLabel(@next);
ctx.LoadAddress(iter, enumeratorType);
ctx.EmitCall(moveNext);
ctx.BranchIfTrue(body, false);
}
}
}
ctx.MarkLabel(done);
}
EmitReadList(ctx, builder, Tail, add, packedWireType, false);
ctx.LoadAddress(builder, builder.Type);
ctx.EmitCall(finish);
if(ExpectedType != finish.ReturnType)
{
ctx.Cast(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, typeof(int)))
{
// pre-callbacks
if (HasCallbacks(TypeModel.CallbackType.BeforeDeserialize))
{
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, expected, loc);
ctx.LoadReaderWriter();
if (isExtensible)
{
ctx.LoadValue(loc);
ctx.EmitCall(typeof(ProtoReader).GetMethod("AppendExtensionData"));
}
else
{
ctx.EmitCall(typeof(ProtoReader).GetMethod("SkipField"));
}
ctx.MarkLabel(@continue);
ctx.EmitBasicRead("ReadFieldHeader", typeof(int));
ctx.CopyValue();
ctx.StoreValue(fieldNumber);
ctx.LoadValue(0);
ctx.BranchIfGreater(processField, false);
EmitCreateIfNull(ctx, expected, loc);
// post-callbacks
EmitCallbackIfNeeded(ctx, loc, TypeModel.CallbackType.AfterDeserialize);
}
}