void EmitLeftLiftedToNullBinary(EmitContext ec)
{
var ig = ec.ig;
var ret = ig.DefineLabel();
var done = ig.DefineLabel();
var left = ec.EmitStored(this.left);
ec.EmitNullableHasValue(left);
ig.Emit(OpCodes.Brfalse, ret);
ec.EmitNullableGetValueOrDefault(left);
ec.Emit(right);
EmitBinaryOperator(ec);
ec.EmitNullableNew(Type);
ig.Emit(OpCodes.Br, done);
ig.MarkLabel(ret);
var temp = ig.DeclareLocal(Type);
ec.EmitNullableInitialize(temp);
ig.MarkLabel(done);
}
private void EmitUserDefinedLiftedLogicalShortCircuit(EmitContext ec)
{
ILGenerator ig = ec.ig;
bool flag = base.NodeType == ExpressionType.AndAlso;
Label label = ig.DefineLabel();
Label label2 = ig.DefineLabel();
Label label3 = ig.DefineLabel();
Label label4 = ig.DefineLabel();
LocalBuilder local = ec.EmitStored(this.left);
ec.EmitNullableHasValue(local);
ig.Emit(OpCodes.Brfalse, (!flag) ? label : label3);
ec.EmitNullableGetValueOrDefault(local);
ec.EmitCall((!flag) ? this.GetTrueOperator() : this.GetFalseOperator());
ig.Emit(OpCodes.Brtrue, label2);
ig.MarkLabel(label);
LocalBuilder local2 = ec.EmitStored(this.right);
ec.EmitNullableHasValue(local2);
ig.Emit(OpCodes.Brfalse, label3);
ec.EmitNullableGetValueOrDefault(local);
ec.EmitNullableGetValueOrDefault(local2);
ec.EmitCall(this.method);
ec.EmitNullableNew(base.Type);
ig.Emit(OpCodes.Br, label4);
ig.MarkLabel(label2);
ec.EmitLoad(local);
ig.Emit(OpCodes.Br, label4);
ig.MarkLabel(label3);
LocalBuilder local3 = ig.DeclareLocal(base.Type);
ec.EmitNullableInitialize(local3);
ig.MarkLabel(label4);
}
void EmitLiftedUnary(EmitContext ec)
{
var ig = ec.ig;
var from = ec.EmitStored(operand);
var to = ig.DeclareLocal(Type);
var has_value = ig.DefineLabel();
var done = ig.DefineLabel();
ec.EmitNullableHasValue(from);
ig.Emit(OpCodes.Brtrue, has_value);
// if not has value
ec.EmitNullableInitialize(to);
ig.Emit(OpCodes.Br, done);
ig.MarkLabel(has_value);
// if has value
ec.EmitNullableGetValueOrDefault(from);
EmitUnaryOperator(ec);
ec.EmitNullableNew(Type);
ig.MarkLabel(done);
}
void EmitLiftedLogicalShortCircuit(EmitContext ec)
{
var ig = ec.ig;
var and = NodeType == ExpressionType.AndAlso;
var left_is_null = ig.DefineLabel();
var ret_from_left = ig.DefineLabel();
var ret_null = ig.DefineLabel();
var ret_new = ig.DefineLabel();
var done = ig.DefineLabel();
var left = ec.EmitStored(this.left);
ec.EmitNullableHasValue(left);
ig.Emit(OpCodes.Brfalse, left_is_null);
ec.EmitNullableGetValueOrDefault(left);
ig.Emit(OpCodes.Ldc_I4_0);
ig.Emit(OpCodes.Ceq);
ig.Emit(and ? OpCodes.Brtrue : OpCodes.Brfalse, ret_from_left);
ig.MarkLabel(left_is_null);
var right = ec.EmitStored(this.right);
ec.EmitNullableHasValue(right);
ig.Emit(OpCodes.Brfalse_S, ret_null);
ec.EmitNullableGetValueOrDefault(right);
ig.Emit(OpCodes.Ldc_I4_0);
ig.Emit(OpCodes.Ceq);
ig.Emit(and ? OpCodes.Brtrue : OpCodes.Brfalse, ret_from_left);
ec.EmitNullableHasValue(left);
ig.Emit(OpCodes.Brfalse, ret_null);
ig.Emit(and ? OpCodes.Ldc_I4_1 : OpCodes.Ldc_I4_0);
ig.Emit(OpCodes.Br_S, ret_new);
ig.MarkLabel(ret_from_left);
ig.Emit(and ? OpCodes.Ldc_I4_0 : OpCodes.Ldc_I4_1);
ig.MarkLabel(ret_new);
ec.EmitNullableNew(Type);
ig.Emit(OpCodes.Br, done);
ig.MarkLabel(ret_null);
var ret = ig.DeclareLocal(Type);
ec.EmitNullableInitialize(ret);
ig.MarkLabel(done);
}
void EmitNullableConstant(EmitContext ec, Type type, object value)
{
if (value == null)
{
var local = ec.ig.DeclareLocal(type);
ec.EmitNullableInitialize(local);
}
else
{
EmitConstant(ec, type.GetFirstGenericArgument(), value);
ec.EmitNullableNew(type);
}
}
private void EmitConvertToNullable(EmitContext ec)
{
ec.Emit(operand);
if (IsUnBoxing())
{
EmitUnbox(ec);
return;
}
if (operand.Type != base.Type.GetNotNullableType())
{
EmitPrimitiveConversion(ec, operand.Type, base.Type.GetNotNullableType());
}
ec.EmitNullableNew(base.Type);
}
void EmitNullableConstant(EmitContext ec, Type type, object value)
{
if (value == null)
{
var ig = ec.ig;
var local = ig.DeclareLocal(type);
ig.Emit(OpCodes.Ldloca, local);
ig.Emit(OpCodes.Initobj, type);
ig.Emit(OpCodes.Ldloc, local);
}
else
{
EmitConstant(ec, type.GetFirstGenericArgument(), value);
ec.EmitNullableNew(type);
}
}
private void EmitLiftedUnary(EmitContext ec)
{
ILGenerator ig = ec.ig;
LocalBuilder local = ec.EmitStored(operand);
LocalBuilder local2 = ig.DeclareLocal(base.Type);
Label label = ig.DefineLabel();
Label label2 = ig.DefineLabel();
ec.EmitNullableHasValue(local);
ig.Emit(OpCodes.Brtrue, label);
ec.EmitNullableInitialize(local2);
ig.Emit(OpCodes.Br, label2);
ig.MarkLabel(label);
ec.EmitNullableGetValueOrDefault(local);
EmitUnaryOperator(ec);
ec.EmitNullableNew(base.Type);
ig.MarkLabel(label2);
}
void EmitUserDefinedLiftedLogicalShortCircuit(EmitContext ec)
{
var ig = ec.ig;
var and = NodeType == ExpressionType.AndAlso;
var left_is_null = ig.DefineLabel();
var ret_left = ig.DefineLabel();
var ret_null = ig.DefineLabel();
var done = ig.DefineLabel();
var left = ec.EmitStored(this.left);
ec.EmitNullableHasValue(left);
ig.Emit(OpCodes.Brfalse, and ? ret_null : left_is_null);
ec.EmitNullableGetValueOrDefault(left);
ec.EmitCall(and ? GetFalseOperator() : GetTrueOperator());
ig.Emit(OpCodes.Brtrue, ret_left);
ig.MarkLabel(left_is_null);
var right = ec.EmitStored(this.right);
ec.EmitNullableHasValue(right);
ig.Emit(OpCodes.Brfalse, ret_null);
ec.EmitNullableGetValueOrDefault(left);
ec.EmitNullableGetValueOrDefault(right);
ec.EmitCall(method);
ec.EmitNullableNew(Type);
ig.Emit(OpCodes.Br, done);
ig.MarkLabel(ret_left);
ec.EmitLoad(left);
ig.Emit(OpCodes.Br, done);
ig.MarkLabel(ret_null);
var ret = ig.DeclareLocal(Type);
ec.EmitNullableInitialize(ret);
ig.MarkLabel(done);
}
private void EmitUserDefinedLiftedToNullOperator(EmitContext ec)
{
ILGenerator ig = ec.ig;
LocalBuilder local = ec.EmitStored(this.operand);
Label label = ig.DefineLabel();
Label label2 = ig.DefineLabel();
ec.EmitNullableHasValue(local);
ig.Emit(OpCodes.Brfalse, label);
ec.EmitNullableGetValueOrDefault(local);
ec.EmitCall(this.method);
ec.EmitNullableNew(base.Type);
ig.Emit(OpCodes.Br, label2);
ig.MarkLabel(label);
LocalBuilder local2 = ig.DeclareLocal(base.Type);
ec.EmitNullableInitialize(local2);
ig.MarkLabel(label2);
}
private void EmitLeftLiftedToNullBinary(EmitContext ec)
{
ILGenerator ig = ec.ig;
Label label = ig.DefineLabel();
Label label2 = ig.DefineLabel();
LocalBuilder local = ec.EmitStored(this.left);
ec.EmitNullableHasValue(local);
ig.Emit(OpCodes.Brfalse, label);
ec.EmitNullableGetValueOrDefault(local);
ec.Emit(this.right);
this.EmitBinaryOperator(ec);
ec.EmitNullableNew(base.Type);
ig.Emit(OpCodes.Br, label2);
ig.MarkLabel(label);
LocalBuilder local2 = ig.DeclareLocal(base.Type);
ec.EmitNullableInitialize(local2);
ig.MarkLabel(label2);
}
private void EmitLiftedLogicalShortCircuit(EmitContext ec)
{
ILGenerator ig = ec.ig;
bool flag = base.NodeType == ExpressionType.AndAlso;
Label label = ig.DefineLabel();
Label label2 = ig.DefineLabel();
Label label3 = ig.DefineLabel();
Label label4 = ig.DefineLabel();
Label label5 = ig.DefineLabel();
LocalBuilder local = ec.EmitStored(left);
ec.EmitNullableHasValue(local);
ig.Emit(OpCodes.Brfalse, label);
ec.EmitNullableGetValueOrDefault(local);
ig.Emit(OpCodes.Ldc_I4_0);
ig.Emit(OpCodes.Ceq);
ig.Emit((!flag) ? OpCodes.Brfalse : OpCodes.Brtrue, label2);
ig.MarkLabel(label);
LocalBuilder local2 = ec.EmitStored(right);
ec.EmitNullableHasValue(local2);
ig.Emit(OpCodes.Brfalse_S, label3);
ec.EmitNullableGetValueOrDefault(local2);
ig.Emit(OpCodes.Ldc_I4_0);
ig.Emit(OpCodes.Ceq);
ig.Emit((!flag) ? OpCodes.Brfalse : OpCodes.Brtrue, label2);
ec.EmitNullableHasValue(local);
ig.Emit(OpCodes.Brfalse, label3);
ig.Emit((!flag) ? OpCodes.Ldc_I4_0 : OpCodes.Ldc_I4_1);
ig.Emit(OpCodes.Br_S, label4);
ig.MarkLabel(label2);
ig.Emit((!flag) ? OpCodes.Ldc_I4_1 : OpCodes.Ldc_I4_0);
ig.MarkLabel(label4);
ec.EmitNullableNew(base.Type);
ig.Emit(OpCodes.Br, label5);
ig.MarkLabel(label3);
LocalBuilder local3 = ig.DeclareLocal(base.Type);
ec.EmitNullableInitialize(local3);
ig.MarkLabel(label5);
}
void EmitUserDefinedLiftedToNullOperator(EmitContext ec)
{
var ig = ec.ig;
var local = ec.EmitStored(operand);
var ret = ig.DefineLabel();
var done = ig.DefineLabel();
ec.EmitNullableHasValue(local);
ig.Emit(OpCodes.Brfalse, ret);
ec.EmitNullableGetValueOrDefault(local);
ec.EmitCall(method);
ec.EmitNullableNew(Type);
ig.Emit(OpCodes.Br, done);
ig.MarkLabel(ret);
var temp = ig.DeclareLocal(Type);
ec.EmitNullableInitialize(temp);
ig.MarkLabel(done);
}
