bool TransformDecimalFieldToConstant(LdObj inst, out LdcDecimal result)
{
if (inst.MatchLdsFld(out var field) && field.DeclaringType.IsKnownType(KnownTypeCode.Decimal))
{
decimal?value = null;
if (field.Name == "One")
{
value = decimal.One;
}
else if (field.Name == "MinusOne")
{
value = decimal.MinusOne;
}
else if (field.Name == "Zero")
{
value = decimal.Zero;
}
if (value != null)
{
result = new LdcDecimal(value.Value).WithILRange(inst).WithILRange(inst.Target);
return(true);
}
}
result = null;
return(false);
}
bool TransformDecimalCtorToConstant(NewObj inst, out LdcDecimal result)
{
IType t = inst.Method.DeclaringType;
result = null;
if (!t.IsKnownType(KnownTypeCode.Decimal))
{
return(false);
}
var args = inst.Arguments;
if (args.Count == 1)
{
int val;
if (args[0].MatchLdcI4(out val))
{
result = new LdcDecimal(val);
return(true);
}
}
else if (args.Count == 5)
{
int lo, mid, hi, isNegative, scale;
if (args[0].MatchLdcI4(out lo) && args[1].MatchLdcI4(out mid) &&
args[2].MatchLdcI4(out hi) && args[3].MatchLdcI4(out isNegative) &&
args[4].MatchLdcI4(out scale))
{
result = new LdcDecimal(new decimal(lo, mid, hi, isNegative != 0, (byte)scale));
return(true);
}
}
return(false);
}
