private Expr GenerateBuiltInUnaryOperator(ExprUnaryOp expr)
{
Debug.Assert(expr != null);
PREDEFMETH pdm;
switch (expr.Kind)
{
case ExpressionKind.UnaryPlus:
return(Visit(expr.Child));
case ExpressionKind.BitwiseNot: pdm = PREDEFMETH.PM_EXPRESSION_NOT; break;
case ExpressionKind.LogicalNot: pdm = PREDEFMETH.PM_EXPRESSION_NOT; break;
case ExpressionKind.Negate:
pdm = expr.isChecked() ? PREDEFMETH.PM_EXPRESSION_NEGATECHECKED : PREDEFMETH.PM_EXPRESSION_NEGATE;
break;
default:
throw Error.InternalCompilerError();
}
Expr origOp = expr.Child;
// Such operations are always already casts on operations on casts.
Debug.Assert(!(origOp.Type is NullableType nub) || !nub.UnderlyingType.isEnumType());
return(GenerateCall(pdm, Visit(origOp)));
}
private Expr GenerateUserDefinedUnaryOperator(ExprUnaryOp expr)
{
Debug.Assert(expr != null);
PREDEFMETH pdm;
Expr arg = expr.Child;
ExprCall call = (ExprCall)expr.OptionalUserDefinedCall;
if (call != null)
{
// Use the actual argument of the call; it may contain user-defined
// conversions or be a bound lambda, and that will not be in the original
// argument stashed away in the left child of the operator.
arg = call.OptionalArguments;
}
Debug.Assert(arg != null && arg.Kind != ExpressionKind.List);
switch (expr.Kind)
{
case ExpressionKind.True:
case ExpressionKind.False:
return(Visit(call));
case ExpressionKind.UnaryPlus:
pdm = PREDEFMETH.PM_EXPRESSION_UNARYPLUS_USER_DEFINED;
break;
case ExpressionKind.BitwiseNot: pdm = PREDEFMETH.PM_EXPRESSION_NOT_USER_DEFINED; break;
case ExpressionKind.LogicalNot: pdm = PREDEFMETH.PM_EXPRESSION_NOT_USER_DEFINED; break;
case ExpressionKind.DecimalNegate:
case ExpressionKind.Negate:
pdm = expr.isChecked() ? PREDEFMETH.PM_EXPRESSION_NEGATECHECKED_USER_DEFINED : PREDEFMETH.PM_EXPRESSION_NEGATE_USER_DEFINED;
break;
case ExpressionKind.Inc:
case ExpressionKind.Dec:
case ExpressionKind.DecimalInc:
case ExpressionKind.DecimalDec:
pdm = PREDEFMETH.PM_EXPRESSION_CALL;
break;
default:
throw Error.InternalCompilerError();
}
Expr op = Visit(arg);
Expr methodInfo = GetExprFactory().CreateMethodInfo(expr.UserDefinedCallMethod);
if (expr.Kind == ExpressionKind.Inc || expr.Kind == ExpressionKind.Dec ||
expr.Kind == ExpressionKind.DecimalInc || expr.Kind == ExpressionKind.DecimalDec)
{
return(GenerateCall(pdm, null, methodInfo, GenerateParamsArray(op, PredefinedType.PT_EXPRESSION)));
}
return(GenerateCall(pdm, op, methodInfo));
}
