internal static string /*!*/ ConvertToHostString(BigInteger /*!*/ address)
{
Assert.NotNull(address);
ulong u;
if (address.AsUInt64(out u))
{
if (u <= UInt32.MaxValue)
{
// IPv4:
return(ConvertToHostString((uint)u));
}
else
{
// IPv6:
byte[] bytes = new byte[8];
for (int i = bytes.Length - 1; i >= 0; --i)
{
bytes[i] = (byte)(u & 0xff);
u >>= 8;
}
return(new IPAddress(bytes).ToString());
}
}
else
{
throw RubyExceptions.CreateRangeError("bignum too big to convert into `quad long'");
}
}
internal static UInt64 ToUInt64(BigInteger value)
{
UInt64 result;
if (value.AsUInt64(out result))
{
return(result);
}
throw RubyExceptions.CreateRangeError("number too big to convert into System::UInt64");
}
public static object EvalExpression(string code, Dictionary <string, object> localScope)
{
var scope = Prepare(localScope);
try
{
ScriptSource source = scope.Engine.CreateScriptSourceFromString(code, SourceCodeKind.Expression);
object obj = source.Execute(scope);
if (obj != null && obj.GetType() == typeof(BigInteger))
{
BigInteger bint = (BigInteger)obj;
int i32;
uint ui32;
long i64;
ulong ui64;
if (bint.AsInt32(out i32))
{
return(i32);
}
if (bint.AsInt64(out i64))
{
return(i64);
}
if (bint.AsUInt32(out ui32))
{
return(ui32);
}
if (bint.AsUInt64(out ui64))
{
return(ui64);
}
}
return(obj);
}
catch (Exception ex)
{
throw new PeachException("Error executing expression [" + code + "]: " + ex.ToString(), ex);
}
finally
{
var names = scope.GetVariableNames().ToList();
foreach (var name in names)
{
scope.RemoveVariable(name);
}
}
}
/// <summary>
/// Try to convert to an UInt64.
/// </summary>
/// <param name="ret">Set to the converted value</param>
/// <returns><value>true</value> if successful; <value>false</value> if the value cannot be represented.</returns>
public bool AsUInt64(out ulong ret)
{
ret = 0;
if (_bipart != null)
{
return(_bipart.AsUInt64(out ret));
}
if (_lpart < 0)
{
return(false);
}
ret = (ulong)_lpart;
return(true);
}
public static int __hash__(BigInteger self)
{
// TODO: we might need our own hash code implementation. This avoids assertion failure.
if (self == -2147483648)
{
return(-2147483648);
}
// check if it's in the Int64 or UInt64 range, and use the built-in hashcode for that instead
// this ensures that objects added to dictionaries as (U)Int64 can be looked up with Python longs
Int64 i64;
if (self.AsInt64(out i64))
{
return(Int64Ops.__hash__(i64));
}
else
{
UInt64 u64;
if (self.AsUInt64(out u64))
{
return(UInt64Ops.__hash__(u64));
}
}
// Call the DLR's BigInteger hash function, which will return an int32 representation of
// b if b is within the int32 range. We use that as an optimization for hashing, and
// assert the assumption below.
int hash = self.GetHashCode();
#if DEBUG
int i;
if (self.AsInt32(out i))
{
Debug.Assert(i == hash, String.Format("hash({0}) == {1}", i, hash));
}
#endif
return(hash);
}
public static bool AsUInt64(BigInteger self, out ulong res)
{
return(self.AsUInt64(out res));
}
private void AsUInt64Test(BigInteger i, bool expRet, ulong expInt)
{
ulong v;
bool b = i.AsUInt64(out v);
Expect(b, EqualTo(expRet));
Expect(v, EqualTo(expInt));
}
public static Variable MakeFixRat(BigInteger num, BigInteger den)
{
ulong sden;
SimplifyFrac(ref num, ref den);
if (den.AsUInt64(out sden) && sden != 0)
return Kernel.BoxAnyMO<Rat>(new Rat(num, sden), Kernel.RatMO);
return MakeFloat(RatToFloat(num, den));
}
public static object EvalExpression(string code, Dictionary <string, object> localScope)
{
var missing = Imports.Except(Engine.Modules.Keys).ToList();
foreach (string import in missing)
{
Engine.Modules.Add(import, Engine.Instance.ImportModule(import));
}
ScriptScope scope = Engine.Instance.CreateScope();
foreach (var kv in Engine.Modules)
{
scope.SetVariable(kv.Key, kv.Value);
}
foreach (var kv in GlobalScope)
{
scope.SetVariable(kv.Key, kv.Value);
}
foreach (var kv in localScope)
{
scope.SetVariable(kv.Key, kv.Value);
}
try
{
ScriptSource source = scope.Engine.CreateScriptSourceFromString(code, SourceCodeKind.Expression);
object obj = source.Execute(scope);
if (obj != null && obj.GetType() == typeof(BigInteger))
{
BigInteger bint = (BigInteger)obj;
int i32;
uint ui32;
long i64;
ulong ui64;
if (bint.AsInt32(out i32))
{
return(i32);
}
if (bint.AsInt64(out i64))
{
return(i64);
}
if (bint.AsUInt32(out ui32))
{
return(ui32);
}
if (bint.AsUInt64(out ui64))
{
return(ui64);
}
}
return(obj);
}
catch (Exception ex)
{
throw new PeachException("Error executing expression [" + code + "]: " + ex.ToString(), ex);
}
finally
{
var names = scope.GetVariableNames().ToList();
foreach (var name in names)
{
scope.RemoveVariable(name);
}
}
}
