public static P5Scalar BitAnd(Runtime runtime, P5Scalar res,
P5Scalar a, P5Scalar b)
{
if (a.IsString(runtime) && b.IsString(runtime))
{
string sa = a.AsString(runtime), sb = b.AsString(runtime);
System.Text.StringBuilder t;
if (sa.Length > sb.Length)
{
t = new System.Text.StringBuilder(sa);
for (int i = 0; i < sb.Length; ++i)
t[i] &= sb[i];
}
else
{
t = new System.Text.StringBuilder(sb);
for (int i = 0; i < sa.Length; ++i)
t[i] &= sa[i];
}
res.SetString(runtime, t.ToString());
}
else
{
// TODO take into account signed/unsigned?
res.SetInteger(runtime, a.AsInteger(runtime) & b.AsInteger(runtime));
}
return res;
}
public static P5Scalar BitNot(Runtime runtime, P5Scalar value)
{
if (value.IsString(runtime))
{
string svalue = value.AsString(runtime);
var t = new System.Text.StringBuilder(svalue);;
for (int i = 0; i < svalue.Length; ++i)
t[i] = (char)(~t[i] & 0xff); // only ASCII for now
return new P5Scalar(runtime, t.ToString());
}
else
{
// TODO take into account signed/unsigned?
return new P5Scalar(runtime, ~value.AsInteger(runtime));
}
}
public static P5Scalar Negate(Runtime runtime, P5Scalar value)
{
if (value.IsString(runtime))
{
string str = value.AsString(runtime);
bool word = true;
foreach (var c in str)
{
if (!(c == '_' || (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')))
{
word = false;
break;
}
}
if (word)
return new P5Scalar(runtime, "-" + str);
}
if (value.IsFloat(runtime))
return new P5Scalar(runtime, -value.AsFloat(runtime));
return new P5Scalar(runtime, -value.AsInteger(runtime));
}