private void EmitOptimizedPower(FleeIlGenerator ilg, bool emitOverflow, bool unsigned)
{
var right = (Int32LiteralElement)this.myRightChild;
var flag = right.Value == 0;
if (flag)
{
ilg.Emit(OpCodes.Pop);
LiteralElement.EmitLoad(1, ilg);
ImplicitConverter.EmitImplicitNumericConvert(typeof(int), this.myLeftChild.ResultType, ilg);
}
else
{
var flag2 = right.Value == 1;
if (!flag2)
{
var num = right.Value - 1;
for (var i = 1; i <= num; i++)
{
ilg.Emit(OpCodes.Dup);
}
var num2 = right.Value - 1;
for (var j = 1; j <= num2; j++)
{
this.EmitMultiply(ilg, emitOverflow, unsigned);
}
}
}
}
private static bool ImplicitConvertToSingle(TypeCode sourceTypeCode, FleeIlGenerator ilg)
{
bool implicitConvertToSingle;
switch (sourceTypeCode)
{
case TypeCode.Char:
case TypeCode.SByte:
case TypeCode.Byte:
case TypeCode.Int16:
case TypeCode.UInt16:
case TypeCode.Int32:
case TypeCode.Int64:
EmitConvert(ilg, OpCodes.Conv_R4);
break;
case TypeCode.UInt32:
case TypeCode.UInt64:
EmitConvert(ilg, OpCodes.Conv_R_Un);
EmitConvert(ilg, OpCodes.Conv_R4);
break;
case TypeCode.Single:
break;
default:
implicitConvertToSingle = false;
return(implicitConvertToSingle);
}
implicitConvertToSingle = true;
return(implicitConvertToSingle);
}
public static void SyncFleeILGeneratorLabels(FleeIlGenerator source, FleeIlGenerator target)
{
while (source.LabelCount != target.LabelCount)
{
target.DefineLabel();
}
}
private static bool ImplicitConvertToInt64(TypeCode sourceTypeCode, FleeIlGenerator ilg)
{
bool implicitConvertToInt64;
switch (sourceTypeCode)
{
case TypeCode.Char:
case TypeCode.Byte:
case TypeCode.UInt16:
case TypeCode.UInt32:
EmitConvert(ilg, OpCodes.Conv_U8);
break;
case TypeCode.SByte:
case TypeCode.Int16:
case TypeCode.Int32:
EmitConvert(ilg, OpCodes.Conv_I8);
break;
case TypeCode.Int64:
break;
default:
implicitConvertToInt64 = false;
return(implicitConvertToInt64);
}
implicitConvertToInt64 = true;
return(implicitConvertToInt64);
}
public static void EmitLoadLocal(FleeIlGenerator ilg, int index)
{
Debug.Assert(index >= 0, "Invalid index");
var flag = (index >= 0) & (index <= 3);
if (flag)
{
switch (index)
{
case 0:
ilg.Emit(OpCodes.Ldloc_0);
break;
case 1:
ilg.Emit(OpCodes.Ldloc_1);
break;
case 2:
ilg.Emit(OpCodes.Ldloc_2);
break;
case 3:
ilg.Emit(OpCodes.Ldloc_3);
break;
}
}
else
{
Debug.Assert(index < 256, "local index too large");
ilg.Emit(OpCodes.Ldloc_S, (byte)index);
}
}
private void EmitVariableLoad(FleeIlGenerator ilg)
{
var mi = VariableCollection.GetVariableLoadMethod(this.myVariableType);
ilg.Emit(OpCodes.Ldstr, this.myName);
this.EmitMethodCall(mi, ilg);
}
private static void EmitValueTypeMethodCall(MethodInfo mi, FleeIlGenerator ilg)
{
var isStatic = mi.IsStatic;
if (isStatic)
{
ilg.Emit(OpCodes.Call, mi);
}
else
{
var flag = mi.DeclaringType != mi.ReflectedType;
if (flag)
{
var flag2 = IsGetTypeMethod(mi);
if (flag2)
{
ilg.Emit(OpCodes.Box, mi.ReflectedType);
ilg.Emit(OpCodes.Call, mi);
}
else
{
ilg.Emit(OpCodes.Constrained, mi.ReflectedType);
ilg.Emit(OpCodes.Callvirt, mi);
}
}
else
{
ilg.Emit(OpCodes.Call, mi);
}
}
}
protected static void EmitValueTypeLoadAddress(FleeIlGenerator ilg, Type targetType)
{
var index = ilg.GetTempLocalIndex(targetType);
Utility.EmitStoreLocal(ilg, index);
ilg.Emit(OpCodes.Ldloca_S, (byte)index);
}
private void EmitShift(FleeIlGenerator ilg)
{
var op = new OpCode();
switch (Type.GetTypeCode(this.myLeftChild.ResultType))
{
case TypeCode.SByte:
case TypeCode.Byte:
case TypeCode.Int16:
case TypeCode.UInt16:
case TypeCode.Int32:
case TypeCode.Int64:
{
var flag = this.myOperation == ShiftOperation.LeftShift;
op = flag ? OpCodes.Shl : OpCodes.Shr;
break;
}
case TypeCode.UInt32:
case TypeCode.UInt64:
{
var flag2 = this.myOperation == ShiftOperation.LeftShift;
op = flag2 ? OpCodes.Shl : OpCodes.Shr_Un;
break;
}
default:
Debug.Assert(false, "unknown left shift operand");
break;
}
ilg.Emit(op);
}
public void AddBranch(FleeIlGenerator ilg, Label target)
{
var startLoc = new IlLocation(ilg.Length);
var bi = new BranchInfo(startLoc, target);
this.myBranchInfos.Add(bi);
}
private static void EmitTerminals(ShortCircuitInfo info, FleeIlGenerator ilg, Label endLabel)
{
var flag = info.Branches.HasLabel(RuntimeHelpers.GetObjectValue(ourFalseTerminalKey));
if (flag)
{
var falseLabel = info.Branches.FindLabel(RuntimeHelpers.GetObjectValue(ourFalseTerminalKey));
ilg.MarkLabel(falseLabel);
MarkBranchTarget(info, falseLabel, ilg);
ilg.Emit(OpCodes.Ldc_I4_0);
var flag2 = info.Branches.HasLabel(RuntimeHelpers.GetObjectValue(ourTrueTerminalKey));
if (flag2)
{
ilg.Emit(OpCodes.Br_S, endLabel);
}
}
var flag3 = info.Branches.HasLabel(RuntimeHelpers.GetObjectValue(ourTrueTerminalKey));
if (flag3)
{
var trueLabel = info.Branches.FindLabel(RuntimeHelpers.GetObjectValue(ourTrueTerminalKey));
ilg.MarkLabel(trueLabel);
MarkBranchTarget(info, trueLabel, ilg);
ilg.Emit(OpCodes.Ldc_I4_1);
}
}
private void EmitCast(FleeIlGenerator ilg, Type sourceType, Type destType, IServiceProvider services)
{
var explicitOperator = this.GetExplictOverloadedOperator(sourceType, destType);
var flag = sourceType == destType;
if (!flag)
{
var flag2 = explicitOperator != null;
if (flag2)
{
ilg.Emit(OpCodes.Call, explicitOperator);
}
else
{
var flag3 = sourceType.IsEnum | destType.IsEnum;
if (flag3)
{
this.EmitEnumCast(ilg, sourceType, destType, services);
}
else
{
var flag4 = ImplicitConverter.EmitImplicitConvert(sourceType, destType, ilg);
if (!flag4)
{
var flag5 = IsCastableNumericType(sourceType) & IsCastableNumericType(destType);
if (flag5)
{
EmitExplicitNumericCast(ilg, sourceType, destType, services);
}
else
{
var isValueType = sourceType.IsValueType;
if (isValueType)
{
Debug.Assert(!destType.IsValueType, "expecting reference type");
ilg.Emit(OpCodes.Box, sourceType);
}
else
{
var isValueType2 = destType.IsValueType;
if (isValueType2)
{
ilg.Emit(OpCodes.Unbox_Any, destType);
}
else
{
var flag6 = !destType.IsAssignableFrom(sourceType);
if (flag6)
{
ilg.Emit(OpCodes.Castclass, destType);
}
}
}
}
}
}
}
}
}
public override void Emit(FleeIlGenerator ilg, IServiceProvider services)
{
var binaryResultType = ImplicitConverter.GetBinaryResultType(this.myLeftChild.ResultType, this.myRightChild.ResultType);
var overloadedOperator = this.GetOverloadedCompareOperator();
var flag = this.AreBothChildrenOfType(typeof(string));
if (flag)
{
this.myLeftChild.Emit(ilg, services);
this.myRightChild.Emit(ilg, services);
EmitStringEquality(ilg, this.myOperation, services);
}
else
{
var flag2 = overloadedOperator != null;
if (flag2)
{
this.EmitOverloadedOperatorCall(overloadedOperator, ilg, services);
}
else
{
var flag3 = binaryResultType != null;
if (flag3)
{
EmitChildWithConvert(this.myLeftChild, binaryResultType, ilg, services);
EmitChildWithConvert(this.myRightChild, binaryResultType, ilg, services);
this.EmitCompareOperation(ilg, this.myOperation);
}
else
{
var flag4 = this.AreBothChildrenOfType(typeof(bool));
if (flag4)
{
this.EmitRegular(ilg, services);
}
else
{
var flag5 = this.AreBothChildrenReferenceTypes();
if (flag5)
{
this.EmitRegular(ilg, services);
}
else
{
var flag6 = this.myLeftChild.ResultType.IsEnum & this.myRightChild.ResultType.IsEnum;
if (flag6)
{
this.EmitRegular(ilg, services);
}
else
{
Debug.Fail("unknown operand types");
}
}
}
}
}
}
}
public override void Emit(FleeIlGenerator ilg, IServiceProvider services)
{
this.myCastExpression.Emit(ilg, services);
var sourceType = this.myCastExpression.ResultType;
var destType = this.myDestType;
this.EmitCast(ilg, sourceType, destType, services);
}
private static void MarkBranchTarget(ShortCircuitInfo info, Label target, FleeIlGenerator ilg)
{
var isTemp = ilg.IsTemp;
if (isTemp)
{
info.Branches.MarkLabel(ilg, target);
}
}
private static void EmitConvert(FleeIlGenerator ilg, OpCode convertOpcode)
{
var flag = ilg != null;
if (flag)
{
ilg.Emit(convertOpcode);
}
}
private void EmitOnDemandFunction(ExpressionElement[] elements, FleeIlGenerator ilg, IServiceProvider services)
{
EmitLoadVariables(ilg);
ilg.Emit(OpCodes.Ldstr, this.myName);
EmitElementArrayLoad(elements, typeof(object), ilg, services);
var mi = VariableCollection.GetFunctionInvokeMethod(this.myOnDemandFunctionReturnType);
this.EmitMethodCall(mi, ilg);
}
public bool IsLongBranch(FleeIlGenerator ilg, Label target)
{
var startLoc = new IlLocation(ilg.Length);
var bi = new BranchInfo(startLoc, target);
var index = this.myBranchInfos.IndexOf(bi);
bi = this.myBranchInfos[index];
return(bi.IsLongBranch);
}
public override void Emit(FleeIlGenerator ilg, IServiceProvider services)
{
var flag = this.myPrevious != null;
if (flag)
{
this.myPrevious.Emit(ilg, services);
}
}
protected void EmitOverloadedOperatorCall(MethodInfo method, FleeIlGenerator ilg, IServiceProvider services)
{
var @params = method.GetParameters();
var pLeft = @params[0];
var pRight = @params[1];
EmitChildWithConvert(this.myLeftChild, pLeft.ParameterType, ilg, services);
EmitChildWithConvert(this.myRightChild, pRight.ParameterType, ilg, services);
ilg.Emit(OpCodes.Call, method);
}
private void EmitCollectionIn(FleeIlGenerator ilg, IServiceProvider services)
{
var mi = this.GetCollectionContainsMethod();
var p = mi.GetParameters()[0];
this.myTargetCollectionElement.Emit(ilg, services);
this.myOperand.Emit(ilg, services);
ImplicitConverter.EmitImplicitConvert(this.myOperand.ResultType, p.ParameterType, ilg);
ilg.Emit(OpCodes.Callvirt, mi);
}
public override void Emit(FleeIlGenerator ilg, IServiceProvider services)
{
var resultType = this.ResultType;
this.myLeftChild.Emit(ilg, services);
ImplicitConverter.EmitImplicitConvert(this.myLeftChild.ResultType, resultType, ilg);
this.myRightChild.Emit(ilg, services);
ImplicitConverter.EmitImplicitConvert(this.myRightChild.ResultType, resultType, ilg);
ilg.Emit(OpCodes.Xor);
}
private void EmitMultiply(FleeIlGenerator ilg, bool emitOverflow, bool unsigned)
{
if (emitOverflow)
{
ilg.Emit(unsigned ? OpCodes.Mul_Ovf_Un : OpCodes.Mul_Ovf);
}
else
{
ilg.Emit(OpCodes.Mul);
}
}
private static void EmitLogicalShortCircuit(FleeIlGenerator ilg, ShortCircuitInfo info, IServiceProvider services)
{
while (info.Operators.Count != 0)
{
var op = (AndOrElement)info.Operators.Pop();
var leftOperand = (ExpressionElement)info.Operands.Pop();
EmitOperand(leftOperand, info, ilg, services);
var i = GetShortCircuitLabel(op, info, ilg);
EmitBranch(op, ilg, i, info);
}
}
public override void Emit(FleeIlGenerator ilg, IServiceProvider services)
{
base.Emit(ilg, services);
this.myElement.Emit(ilg, services);
var isValueType = this.myElement.ResultType.IsValueType;
if (isValueType)
{
EmitValueTypeLoadAddress(ilg, this.ResultType);
}
}
protected static void EmitLoad(bool value, FleeIlGenerator ilg)
{
if (value)
{
ilg.Emit(OpCodes.Ldc_I4_1);
}
else
{
ilg.Emit(OpCodes.Ldc_I4_0);
}
}
public Label GetLabel(object key, FleeIlGenerator ilg)
{
Label lbl;
var flag = !this.myKeyLabelMap.TryGetValue(RuntimeHelpers.GetObjectValue(key), out lbl);
if (flag)
{
lbl = ilg.DefineLabel();
this.myKeyLabelMap.Add(RuntimeHelpers.GetObjectValue(key), lbl);
}
return(lbl);
}
private void DoEmitLogical(FleeIlGenerator ilg, IServiceProvider services)
{
var info = new ShortCircuitInfo();
var ilgTemp = this.CreateTempFleeIlGenerator(ilg);
Utility.SyncFleeILGeneratorLabels(ilg, ilgTemp);
this.EmitLogical(ilgTemp, info, services);
info.ClearTempState();
info.Branches.ComputeBranches();
Utility.SyncFleeILGeneratorLabels(ilgTemp, ilg);
this.EmitLogical(ilg, info, services);
}
private static void EmitSuperShort(int value, FleeIlGenerator ilg)
{
var ldcOpcode = default(OpCode);
switch (value)
{
case -1:
ldcOpcode = OpCodes.Ldc_I4_M1;
break;
case 0:
ldcOpcode = OpCodes.Ldc_I4_0;
break;
case 1:
ldcOpcode = OpCodes.Ldc_I4_1;
break;
case 2:
ldcOpcode = OpCodes.Ldc_I4_2;
break;
case 3:
ldcOpcode = OpCodes.Ldc_I4_3;
break;
case 4:
ldcOpcode = OpCodes.Ldc_I4_4;
break;
case 5:
ldcOpcode = OpCodes.Ldc_I4_5;
break;
case 6:
ldcOpcode = OpCodes.Ldc_I4_6;
break;
case 7:
ldcOpcode = OpCodes.Ldc_I4_7;
break;
case 8:
ldcOpcode = OpCodes.Ldc_I4_8;
break;
default:
Debug.Assert(false, "value out of range");
break;
}
ilg.Emit(ldcOpcode);
}
public override void Emit(FleeIlGenerator ilg, IServiceProvider services)
{
this.myChild.Emit(ilg, services);
ImplicitConverter.EmitImplicitConvert(this.myChild.ResultType, this.myResultType, ilg);
var options = (ExpressionOptions)services.GetService(typeof(ExpressionOptions));
var flag = !options.IsGeneric;
if (flag)
{
ImplicitConverter.EmitImplicitConvert(this.myResultType, typeof(object), ilg);
}
ilg.Emit(OpCodes.Ret);
}