public void EmitEncode(IEmittingContext context, Action <MyILGenerator> emitLoad)
{
var il = context.IL;
var arrayIsNotNullLabel = il.DefineLabel();
var arrayIsNotEmptylabel = il.DefineLabel();
var endOfSubmethodLabel = il.DefineLabel();
emitLoad(il); // if (value)
il.Brtrue(arrayIsNotNullLabel); // goto arrayIsNotNullLabel
// Array is null branch
il.Ldloc(context.DataPointerVar); // *(int*) data = -1
il.Ldc_I4(-1);
il.Stind_I4();
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
il.Br(endOfSubmethodLabel); // goto endOfSubmethodLabel
il.MarkLabel(arrayIsNotNullLabel);
emitLoad(il); // if (value.Length)
il.Ldlen(); // goto arrayIsNotEmptylabel
il.Conv_I4();
il.Brtrue(arrayIsNotEmptylabel);
// Array is empty branch
il.Ldloc(context.DataPointerVar); // *(int*) data = 0
il.Ldc_I4(0);
il.Stind_I4();
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
il.Br(endOfSubmethodLabel); // goto endOfSubmethodLabel
// Array is not empty branch
il.MarkLabel(arrayIsNotEmptylabel);
var lengthVar = context.GetSharedVariable <int>("length"); // var length = value.Length
emitLoad(il);
il.Ldlen();
il.Conv_I4();
il.Stloc(lengthVar);
var sizeVar = context.GetSharedVariable <int>("sizeInBytes");// var sizeInBytes = length * sizeOfStruct
il.Ldloc(lengthVar);
il.Ldc_I4(sizeOfStruct);
il.Mul();
il.Stloc(sizeVar);
il.Ldloc(context.DataPointerVar); // *(int*) data = length
il.Ldloc(lengthVar);
il.Stind_I4();
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
var pointerVar = il.PinArray(typeOfStruct, emitLoad); // var pinned arrayPointer = pin(value)
il.Ldloc(context.DataPointerVar); // cpblk(data, (byte*)arrayPointer, sizeInBytes)
il.Ldloc(pointerVar);
il.Conv_I();
il.Ldloc(sizeVar);
il.Cpblk();
il.UnpinArray(pointerVar); // unpin(arrayPointer)
il.IncreasePointer(context.DataPointerVar, sizeVar); // data += sizeInBytes
il.MarkLabel(endOfSubmethodLabel);
}
public void EmitEncode(IEmittingContext context, Action <MyILGenerator> emitLoad)
{
var il = context.IL;
var strIsNotNullLabel = il.DefineLabel();
var endOfSubmethodLabel = il.DefineLabel();
if (canBeNull)
{
emitLoad(il); // if (val) goto strIsNotNullLabel
il.Brtrue(strIsNotNullLabel);
// String is null branch
il.Ldloc(context.DataPointerVar); // *(int*) data = -1
il.Ldc_I4(-1);
il.Stind_I4();
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
il.Br(endOfSubmethodLabel); // goto endOfEncodeLabel
// String is not null branch
il.MarkLabel(strIsNotNullLabel); // label strIsNotNullLabel
}
var stringValueVar = context.GetSharedVariable <string>("stringValue"); // var stringValue = FormatToString(value)
EmitLoadAsString(il, emitLoad);
il.Stloc(stringValueVar);
var tempIntegerVar = context.GetSharedVariable <int>("tempInteger"); // var tempInteger = stringValue.Length << 1
il.Ldloc(stringValueVar);
il.Call(GetLength);
il.Ldc_I4(1);
il.Shl();
il.Stloc(tempIntegerVar);
il.Ldloc(context.DataPointerVar); // *(int*)data = tempInteger
il.Ldloc(tempIntegerVar);
il.Stind_I4();
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
var pinnedString = il.DeclareLocal(typeof(string), true); // var pinned pinnedString = stringValue
il.Ldloc(stringValueVar);
il.Stloc(pinnedString);
il.Ldloc(pinnedString); // stack_0 = (byte*)pinnedString
il.Conv_I();
il.Call(GetOffsetToStringData); // stack_0 = stack_0 +
il.Add(); // RuntimeHelpers.OffsetToStringData
var charPointer = context.GetSharedVariable(typeof(char *), "charPointer"); // charPointer = stack_0
il.Stloc(charPointer);
il.Ldloc(context.DataPointerVar); // cpblk(data, charPointer, tempInteger)
il.Ldloc(charPointer);
il.Ldloc(tempIntegerVar);
il.Cpblk();
il.Ldnull(); // pinnedString = null
il.Stloc(pinnedString);
il.IncreasePointer(context.DataPointerVar, tempIntegerVar); // data += tempInteger
il.MarkLabel(endOfSubmethodLabel); // label endOfSubmethodLabel
}
public void EmitDecode(IEmittingContext context, bool doNotCheckBounds)
{
var il = context.IL;
var endOfSubmethodLabel = il.DefineLabel();
if (!doNotCheckBounds)
{
var canReadSizeLabel = il.DefineLabel();
il.Ldloc(context.RemainingBytesVar); // if (remainingBytes >= sizeof(int))
il.Ldc_I4(sizeof(int)); // goto canReadSizeLabel
il.Bge(canReadSizeLabel);
il.ThrowUnexpectedEndException(); // throw new InvalidDataException("...")
il.MarkLabel(canReadSizeLabel); // label canReadSizeLabel
}
il.Ldloc(context.DataPointerVar); // stack_0 = *(int*) data
il.Ldind_I4();
var tempInteger = context.GetSharedVariable <int>("tempInteger"); // var tempInteger = stack_0
il.Stloc(tempInteger);
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
il.DecreaseInteger(context.RemainingBytesVar, sizeof(int)); // remainingBytes -= sizeof(int)
if (canBeNull)
{
var strIsNotNullLabel = il.DefineLabel();
il.Ldloc(tempInteger); // if (tempInteger != -1)
il.Ldc_I4(-1); // goto strIsNotNullLabel
il.Bne_Un(strIsNotNullLabel);
// String is null branch
il.Ldnull(); // stack_0 = null
il.Br(endOfSubmethodLabel); // goto endOfSubmethodLabel
// String is not null branch
il.MarkLabel(strIsNotNullLabel); // label strIsNotNullLabel
}
if (!doNotCheckBounds)
{
var canReadDataLabel = il.DefineLabel();
il.Ldloc(context.RemainingBytesVar); // if (remainingBytes >= tempInteger)
il.Ldloc(tempInteger); // goto canReadDataLabel
il.Bge(canReadDataLabel);
il.ThrowUnexpectedEndException(); // throw new InvalidDataException("...")
il.MarkLabel(canReadDataLabel); // label canReadDataLabel
}
il.Ldloc(context.DataPointerVar); // stack_0 = data
il.Ldc_I4(0); // stack_1 = 0
il.Ldloc(tempInteger); // stack_2 = tempInteger >> 1
il.Ldc_I4(1);
il.Shr();
il.Newobj(NewString); // stack_0 = new string(stack_0, stack_1, stack_2)
EmitParseFromString(il); // stack_0 = Parse(stack_0)
il.IncreasePointer(context.DataPointerVar, tempInteger); // data += tempInteger
il.DecreaseInteger(context.RemainingBytesVar, tempInteger); // remainingBytes -= tempInteger
il.MarkLabel(endOfSubmethodLabel); // label endOfSubmethodLabel
}
public void EmitDecode(IEmittingContext context, bool doNotCheckBounds)
{
var il = context.IL;
var enoughBytesForLengthLabel = il.DefineLabel();
var enoughBytesForDataLabel = il.DefineLabel();
var lengthIsMinusOneLabel = il.DefineLabel();
var lengthIsZeroLabel = il.DefineLabel();
var labelGroup = new[] { lengthIsMinusOneLabel, lengthIsZeroLabel };
var lengthIsPositiveLabel = il.DefineLabel();
var endOfMethodLabel = il.DefineLabel();
if (!doNotCheckBounds)
{
il.Ldloc(context.RemainingBytesVar); // if (remainingBytes >= sizeof(int))
il.Ldc_I4(sizeof(int)); // goto enoughBytesForLengthLabel
il.Bge(enoughBytesForLengthLabel);
// not enough bytes for length
il.ThrowUnexpectedEndException(); // throw new InvalidDataException(...)
}
// enough bytes for length
il.MarkLabel(enoughBytesForLengthLabel);
var lengthVar = context.GetSharedVariable <int>("length"); // var length = *(int*)data
il.Ldloc(context.DataPointerVar);
il.Ldind_I4();
il.Stloc(lengthVar);
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
il.DecreaseInteger(context.RemainingBytesVar, sizeof(int)); // remainingBytes -= sizeof(int)
il.Ldloc(lengthVar); // switch(length + 1)
il.Ldc_I4(1); // case 0: goto lengthIsMinusOneLabel
il.Add(); // case 1: goto lengthIsZeroLabel
il.Switch(labelGroup); // default: goto lengthIsPositiveLabel
il.Br(lengthIsPositiveLabel);
// length is -1
il.MarkLabel(lengthIsMinusOneLabel);
il.Ldnull(); // stack_0 = null
il.Br(endOfMethodLabel); // goto endOfMethodLabel
// length is 0
il.MarkLabel(lengthIsZeroLabel);
il.Ldc_I4(0); // stack_0 = new T[0]
il.Newarr(typeOfStruct);
il.Br(endOfMethodLabel); // goto endOfMethodLabel
// length is positive
il.MarkLabel(lengthIsPositiveLabel);
var sizeVar = context.GetSharedVariable <int>("sizeInBytes");// var sizeInBytes = length * sizeOfStruct
il.Ldloc(lengthVar);
il.Ldc_I4(sizeOfStruct);
il.Mul();
il.Stloc(sizeVar);
if (!doNotCheckBounds)
{
il.Ldloc(context.RemainingBytesVar); // if (remainingBytes >= sizeInBytes)
il.Ldloc(sizeVar); // goto enoughBytesForDataLabel
il.Bge(enoughBytesForDataLabel);
// not enough bytes for data
il.ThrowUnexpectedEndException(); // throw new InvalidDataException(...)
}
// enough bytes for data
il.MarkLabel(enoughBytesForDataLabel);
var resultVar = context.GetSharedVariable( // var result = new T[length]
typeOfStruct.MakeArrayType(), "arrayOf");
il.Ldloc(lengthVar);
il.Newarr(typeOfStruct);
il.Stloc(resultVar);
var pointerVar = il.PinArray(typeOfStruct, resultVar); // var pinned arrayPointer = pin(value)
il.Ldloc(pointerVar); // cpblk((byte*)arrayPointer, data, sizeInBytes)
il.Conv_I();
il.Ldloc(context.DataPointerVar);
il.Ldloc(sizeVar);
il.Cpblk();
il.UnpinArray(pointerVar); // unpin(arrayPointer)
il.IncreasePointer(context.DataPointerVar, sizeVar); // data += size
il.DecreaseInteger(context.RemainingBytesVar, sizeVar); // remainingBytes -= size
il.Ldloc(resultVar); // stack_0 = result
il.MarkLabel(endOfMethodLabel);
}
public void EmitEncode(IEmittingContext context, Action<MyILGenerator> emitLoad)
{
var il = context.IL;
var arrayIsNotNullLabel = il.DefineLabel();
var arrayIsNotEmptylabel = il.DefineLabel();
var endOfSubmethodLabel = il.DefineLabel();
emitLoad(il); // if (value)
il.Brtrue(arrayIsNotNullLabel); // goto arrayIsNotNullLabel
// Array is null branch
il.Ldloc(context.DataPointerVar); // *(int*) data = -1
il.Ldc_I4(-1);
il.Stind_I4();
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
il.Br(endOfSubmethodLabel); // goto endOfSubmethodLabel
il.MarkLabel(arrayIsNotNullLabel);
emitLoad(il); // if (value.Length)
il.Ldlen(); // goto arrayIsNotEmptylabel
il.Conv_I4();
il.Brtrue(arrayIsNotEmptylabel);
// Array is empty branch
il.Ldloc(context.DataPointerVar); // *(int*) data = 0
il.Ldc_I4(0);
il.Stind_I4();
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
il.Br(endOfSubmethodLabel); // goto endOfSubmethodLabel
// Array is not empty branch
il.MarkLabel(arrayIsNotEmptylabel);
var lengthVar = context.GetSharedVariable<int>("length"); // var length = value.Length
emitLoad(il);
il.Ldlen();
il.Conv_I4();
il.Stloc(lengthVar);
var sizeVar = context.GetSharedVariable<int>("sizeInBytes");// var sizeInBytes = length * sizeOfStruct
il.Ldloc(lengthVar);
il.Ldc_I4(sizeOfStruct);
il.Mul();
il.Stloc(sizeVar);
il.Ldloc(context.DataPointerVar); // *(int*) data = length
il.Ldloc(lengthVar);
il.Stind_I4();
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
var pointerVar = il.PinArray(typeOfStruct, emitLoad); // var pinned arrayPointer = pin(value)
il.Ldloc(context.DataPointerVar); // cpblk(data, (byte*)arrayPointer, sizeInBytes)
il.Ldloc(pointerVar);
il.Conv_I();
il.Ldloc(sizeVar);
il.Cpblk();
il.UnpinArray(pointerVar); // unpin(arrayPointer)
il.IncreasePointer(context.DataPointerVar, sizeVar); // data += sizeInBytes
il.MarkLabel(endOfSubmethodLabel);
}
public void EmitDecode(IEmittingContext context, bool doNotCheckBounds)
{
var il = context.IL;
var enoughBytesForLengthLabel = il.DefineLabel();
var enoughBytesForDataLabel = il.DefineLabel();
var lengthIsMinusOneLabel = il.DefineLabel();
var lengthIsZeroLabel = il.DefineLabel();
var labelGroup = new[] {lengthIsMinusOneLabel, lengthIsZeroLabel};
var lengthIsPositiveLabel = il.DefineLabel();
var endOfMethodLabel = il.DefineLabel();
if (!doNotCheckBounds)
{
il.Ldloc(context.RemainingBytesVar); // if (remainingBytes >= sizeof(int))
il.Ldc_I4(sizeof(int)); // goto enoughBytesForLengthLabel
il.Bge(enoughBytesForLengthLabel);
// not enough bytes for length
il.ThrowUnexpectedEndException(); // throw new InvalidDataException(...)
}
// enough bytes for length
il.MarkLabel(enoughBytesForLengthLabel);
var lengthVar = context.GetSharedVariable<int>("length"); // var length = *(int*)data
il.Ldloc(context.DataPointerVar);
il.Ldind_I4();
il.Stloc(lengthVar);
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
il.DecreaseInteger(context.RemainingBytesVar, sizeof(int)); // remainingBytes -= sizeof(int)
il.Ldloc(lengthVar); // switch(length + 1)
il.Ldc_I4(1); // case 0: goto lengthIsMinusOneLabel
il.Add(); // case 1: goto lengthIsZeroLabel
il.Switch(labelGroup); // default: goto lengthIsPositiveLabel
il.Br(lengthIsPositiveLabel);
// length is -1
il.MarkLabel(lengthIsMinusOneLabel);
il.Ldnull(); // stack_0 = null
il.Br(endOfMethodLabel); // goto endOfMethodLabel
// length is 0
il.MarkLabel(lengthIsZeroLabel);
il.Ldc_I4(0); // stack_0 = new T[0]
il.Newarr(typeOfStruct);
il.Br(endOfMethodLabel); // goto endOfMethodLabel
// length is positive
il.MarkLabel(lengthIsPositiveLabel);
var sizeVar = context.GetSharedVariable<int>("sizeInBytes");// var sizeInBytes = length * sizeOfStruct
il.Ldloc(lengthVar);
il.Ldc_I4(sizeOfStruct);
il.Mul();
il.Stloc(sizeVar);
if (!doNotCheckBounds)
{
il.Ldloc(context.RemainingBytesVar); // if (remainingBytes >= sizeInBytes)
il.Ldloc(sizeVar); // goto enoughBytesForDataLabel
il.Bge(enoughBytesForDataLabel);
// not enough bytes for data
il.ThrowUnexpectedEndException(); // throw new InvalidDataException(...)
}
// enough bytes for data
il.MarkLabel(enoughBytesForDataLabel);
var resultVar = context.GetSharedVariable( // var result = new T[length]
typeOfStruct.MakeArrayType(), "arrayOf");
il.Ldloc(lengthVar);
il.Newarr(typeOfStruct);
il.Stloc(resultVar);
var pointerVar = il.PinArray(typeOfStruct, resultVar); // var pinned arrayPointer = pin(value)
il.Ldloc(pointerVar); // cpblk((byte*)arrayPointer, data, sizeInBytes)
il.Conv_I();
il.Ldloc(context.DataPointerVar);
il.Ldloc(sizeVar);
il.Cpblk();
il.UnpinArray(pointerVar); // unpin(arrayPointer)
il.IncreasePointer(context.DataPointerVar, sizeVar); // data += size
il.DecreaseInteger(context.RemainingBytesVar, sizeVar); // remainingBytes -= size
il.Ldloc(resultVar); // stack_0 = result
il.MarkLabel(endOfMethodLabel);
}
public void EmitEncode(IEmittingContext context, Action<MyILGenerator> emitLoad)
{
var il = context.IL;
var strIsNotNullLabel = il.DefineLabel();
var endOfSubmethodLabel = il.DefineLabel();
if (canBeNull)
{
emitLoad(il); // if (val) goto strIsNotNullLabel
il.Brtrue(strIsNotNullLabel);
// String is null branch
il.Ldloc(context.DataPointerVar); // *(int*) data = -1
il.Ldc_I4(-1);
il.Stind_I4();
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
il.Br(endOfSubmethodLabel); // goto endOfEncodeLabel
// String is not null branch
il.MarkLabel(strIsNotNullLabel); // label strIsNotNullLabel
}
var stringValueVar = context.GetSharedVariable<string>("stringValue"); // var stringValue = FormatToString(value)
EmitLoadAsString(il, emitLoad);
il.Stloc(stringValueVar);
var tempIntegerVar = context.GetSharedVariable<int>("tempInteger"); // var tempInteger = stringValue.Length << 1
il.Ldloc(stringValueVar);
il.Call(GetLength);
il.Ldc_I4(1);
il.Shl();
il.Stloc(tempIntegerVar);
il.Ldloc(context.DataPointerVar); // *(int*)data = tempInteger
il.Ldloc(tempIntegerVar);
il.Stind_I4();
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
var pinnedString = il.DeclareLocal(typeof(string), true); // var pinned pinnedString = stringValue
il.Ldloc(stringValueVar);
il.Stloc(pinnedString);
il.Ldloc(pinnedString); // stack_0 = (byte*)pinnedString
il.Conv_I();
il.Call(GetOffsetToStringData); // stack_0 = stack_0 +
il.Add(); // RuntimeHelpers.OffsetToStringData
var charPointer = context.GetSharedVariable(typeof(char*), "charPointer");// charPointer = stack_0
il.Stloc(charPointer);
il.Ldloc(context.DataPointerVar); // cpblk(data, charPointer, tempInteger)
il.Ldloc(charPointer);
il.Ldloc(tempIntegerVar);
il.Cpblk();
il.Ldnull(); // pinnedString = null
il.Stloc(pinnedString);
il.IncreasePointer(context.DataPointerVar, tempIntegerVar); // data += tempInteger
il.MarkLabel(endOfSubmethodLabel); // label endOfSubmethodLabel
}
public void EmitDecode(IEmittingContext context, bool doNotCheckBounds)
{
var il = context.IL;
var endOfSubmethodLabel = il.DefineLabel();
if (!doNotCheckBounds)
{
var canReadSizeLabel = il.DefineLabel();
il.Ldloc(context.RemainingBytesVar); // if (remainingBytes >= sizeof(int))
il.Ldc_I4(sizeof(int)); // goto canReadSizeLabel
il.Bge(canReadSizeLabel);
il.ThrowUnexpectedEndException(); // throw new InvalidDataException("...")
il.MarkLabel(canReadSizeLabel); // label canReadSizeLabel
}
il.Ldloc(context.DataPointerVar); // stack_0 = *(int*) data
il.Ldind_I4();
var tempInteger = context.GetSharedVariable<int>("tempInteger");// var tempInteger = stack_0
il.Stloc(tempInteger);
il.IncreasePointer(context.DataPointerVar, sizeof(int)); // data += sizeof(int)
il.DecreaseInteger(context.RemainingBytesVar, sizeof(int)); // remainingBytes -= sizeof(int)
if (canBeNull)
{
var strIsNotNullLabel = il.DefineLabel();
il.Ldloc(tempInteger); // if (tempInteger != -1)
il.Ldc_I4(-1); // goto strIsNotNullLabel
il.Bne_Un(strIsNotNullLabel);
// String is null branch
il.Ldnull(); // stack_0 = null
il.Br(endOfSubmethodLabel); // goto endOfSubmethodLabel
// String is not null branch
il.MarkLabel(strIsNotNullLabel); // label strIsNotNullLabel
}
if (!doNotCheckBounds)
{
var canReadDataLabel = il.DefineLabel();
il.Ldloc(context.RemainingBytesVar); // if (remainingBytes >= tempInteger)
il.Ldloc(tempInteger); // goto canReadDataLabel
il.Bge(canReadDataLabel);
il.ThrowUnexpectedEndException(); // throw new InvalidDataException("...")
il.MarkLabel(canReadDataLabel); // label canReadDataLabel
}
il.Ldloc(context.DataPointerVar); // stack_0 = data
il.Ldc_I4(0); // stack_1 = 0
il.Ldloc(tempInteger); // stack_2 = tempInteger >> 1
il.Ldc_I4(1);
il.Shr();
il.Newobj(NewString); // stack_0 = new string(stack_0, stack_1, stack_2)
EmitParseFromString(il); // stack_0 = Parse(stack_0)
il.IncreasePointer(context.DataPointerVar, tempInteger); // data += tempInteger
il.DecreaseInteger(context.RemainingBytesVar, tempInteger); // remainingBytes -= tempInteger
il.MarkLabel(endOfSubmethodLabel); // label endOfSubmethodLabel
}
public static LocalBuilder GetSharedVariable <T>(this IEmittingContext emittingContext, string name)
{
return(emittingContext.GetSharedVariable(typeof(T), name));
}
