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Copy pathPyString.cs
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84 lines (74 loc) · 2.69 KB
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using System;
using System.Diagnostics;
using System.Runtime.Serialization;
namespace Python.Runtime
{
/// <summary>
/// Represents a Python (ANSI) string object. See the documentation at
/// PY2: https://docs.python.org/2/c-api/string.html
/// PY3: No Equivalent
/// for details.
/// </summary>
/// <remarks>
/// 2011-01-29: ...Then why does the string constructor call PyUnicode_FromUnicode()???
/// </remarks>
[Serializable]
public class PyString : PySequence, IComparable<string>, IEquatable<string>
{
internal PyString(in StolenReference reference) : base(reference) { }
internal PyString(BorrowedReference reference) : base(reference) { }
protected PyString(SerializationInfo info, StreamingContext context) : base(info, context) { }
private static BorrowedReference FromObject(PyObject o)
{
if (o is null) throw new ArgumentNullException(nameof(o));
if (!IsStringType(o))
{
throw new ArgumentException("object is not a string");
}
return o.Reference;
}
/// <summary>
/// PyString Constructor
/// </summary>
/// <remarks>
/// Copy constructor - obtain a PyString from a generic PyObject.
/// An ArgumentException will be thrown if the given object is not
/// a Python string object.
/// </remarks>
public PyString(PyObject o) : base(FromObject(o))
{
}
/// <summary>
/// PyString Constructor
/// </summary>
/// <remarks>
/// Creates a Python string from a managed string.
/// </remarks>
public PyString(string s) : base(Runtime.PyString_FromString(s).StealOrThrow())
{
}
/// <summary>
/// Returns true if the given object is a Python string.
/// </summary>
public static bool IsStringType(PyObject value)
{
return Runtime.PyString_Check(value.obj);
}
public override TypeCode GetTypeCode() => TypeCode.String;
internal string ToStringUnderGIL()
{
string? result = Runtime.GetManagedString(this.Reference);
Debug.Assert(result is not null);
return result!;
}
public bool Equals(string? other)
=> this.ToStringUnderGIL().Equals(other, StringComparison.CurrentCulture);
public int CompareTo(string? other)
=> string.Compare(this.ToStringUnderGIL(), other, StringComparison.CurrentCulture);
public override string ToString()
{
using var _ = Py.GIL();
return this.ToStringUnderGIL();
}
}
}