pythonnet/src/runtime/PythonTypes/PyFloat.cs at v3.1.0 · pythonnet/pythonnet · GitHub

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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() => base.GetHashCode();

}

pythonnet/src/runtime/PythonTypes/PyFloat.cs at v3.1.0 · pythonnet/pythonnet · GitHub

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