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Copy pathPyFloat.cs
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108 lines (90 loc) · 3.24 KB
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using System;
using System.Runtime.Serialization;
namespace Python.Runtime
{
/// <summary>
/// Represents a Python float object. See the documentation at
/// PY3: https://docs.python.org/3/c-api/float.html
/// for details.
/// </summary>
public partial class PyFloat : PyNumber
{
internal PyFloat(in StolenReference ptr) : base(ptr)
{
}
/// <summary>
/// PyFloat Constructor
/// </summary>
/// <remarks>
/// Copy constructor - obtain a PyFloat from a generic PyObject. An
/// ArgumentException will be thrown if the given object is not a
/// Python float object.
/// </remarks>
public PyFloat(PyObject o) : base(FromObject(o))
{
}
/// <summary>
/// PyFloat Constructor
/// </summary>
/// <remarks>
/// Creates a new Python float from a double value.
/// </remarks>
public PyFloat(double value) : base(Runtime.PyFloat_FromDouble(value).StealOrThrow())
{
}
private static BorrowedReference FromObject(PyObject o)
{
if (o is null) throw new ArgumentNullException(nameof(o));
if (!IsFloatType(o))
{
throw new ArgumentException("object is not a float");
}
return o.Reference;
}
private static StolenReference FromString(string value)
{
if (value is null) throw new ArgumentNullException(nameof(value));
using var s = new PyString(value);
NewReference val = Runtime.PyFloat_FromString(s.Reference);
PythonException.ThrowIfIsNull(val);
return val.Steal();
}
/// <summary>
/// PyFloat Constructor
/// </summary>
/// <remarks>
/// Creates a new Python float from a string value.
/// </remarks>
public PyFloat(string value) : base(FromString(value))
{
}
protected PyFloat(SerializationInfo info, StreamingContext context)
: base(info, context) { }
/// <summary>
/// IsFloatType Method
/// </summary>
/// <remarks>
/// Returns true if the given object is a Python float.
/// </remarks>
public static bool IsFloatType(PyObject value)
{
if (value is null) throw new ArgumentNullException(nameof(value));
return Runtime.PyFloat_Check(value.obj);
}
/// <summary>
/// Convert a Python object to a Python float if possible, raising
/// a PythonException if the conversion is not possible. This is
/// equivalent to the Python expression "float(object)".
/// </summary>
public static PyFloat AsFloat(PyObject value)
{
if (value is null) throw new ArgumentNullException(nameof(value));
var op = Runtime.PyNumber_Float(value.Reference);
PythonException.ThrowIfIsNull(op);
return new PyFloat(op.Steal());
}
public double ToDouble() => Runtime.PyFloat_AsDouble(obj);
public override TypeCode GetTypeCode() => TypeCode.Double;
public override int GetHashCode() => ((PyObject)this).GetHashCode();
}
}