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177 lines (159 loc) · 4.64 KB
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using System;
namespace Python.Runtime
{
/// <summary>
/// Represents a standard Python list object. See the documentation at
/// PY2: https://docs.python.org/2/c-api/list.html
/// PY3: https://docs.python.org/3/c-api/list.html
/// for details.
/// </summary>
public class PyList : PySequence
{
/// <summary>
/// PyList Constructor
/// </summary>
/// <remarks>
/// Creates a new PyList from an existing object reference. Note
/// that the instance assumes ownership of the object reference.
/// The object reference is not checked for type-correctness.
/// </remarks>
public PyList(IntPtr ptr) : base(ptr)
{
}
/// <summary>
/// PyList Constructor
/// </summary>
/// <remarks>
/// Copy constructor - obtain a PyList from a generic PyObject. An
/// ArgumentException will be thrown if the given object is not a
/// Python list object.
/// </remarks>
public PyList(PyObject o)
{
if (!IsListType(o))
{
throw new ArgumentException("object is not a list");
}
Runtime.XIncref(o.obj);
obj = o.obj;
}
/// <summary>
/// PyList Constructor
/// </summary>
/// <remarks>
/// Creates a new empty Python list object.
/// </remarks>
public PyList()
{
obj = Runtime.PyList_New(0);
if (obj == IntPtr.Zero)
{
throw new PythonException();
}
}
/// <summary>
/// PyList Constructor
/// </summary>
/// <remarks>
/// Creates a new Python list object from an array of PyObjects.
/// </remarks>
public PyList(PyObject[] items)
{
int count = items.Length;
obj = Runtime.PyList_New(count);
for (var i = 0; i < count; i++)
{
IntPtr ptr = items[i].obj;
Runtime.XIncref(ptr);
int r = Runtime.PyList_SetItem(obj, i, ptr);
if (r < 0)
{
throw new PythonException();
}
}
}
/// <summary>
/// IsListType Method
/// </summary>
/// <remarks>
/// Returns true if the given object is a Python list.
/// </remarks>
public static bool IsListType(PyObject value)
{
return Runtime.PyList_Check(value.obj);
}
/// <summary>
/// AsList Method
/// </summary>
/// <remarks>
/// Converts a Python object to a Python list if possible, raising
/// a PythonException if the conversion is not possible. This is
/// equivalent to the Python expression "list(object)".
/// </remarks>
public static PyList AsList(PyObject value)
{
IntPtr op = Runtime.PySequence_List(value.obj);
if (op == IntPtr.Zero)
{
throw new PythonException();
}
return new PyList(op);
}
/// <summary>
/// Append Method
/// </summary>
/// <remarks>
/// Append an item to the list object.
/// </remarks>
public void Append(PyObject item)
{
int r = Runtime.PyList_Append(obj, item.obj);
if (r < 0)
{
throw new PythonException();
}
}
/// <summary>
/// Insert Method
/// </summary>
/// <remarks>
/// Insert an item in the list object at the given index.
/// </remarks>
public void Insert(int index, PyObject item)
{
int r = Runtime.PyList_Insert(obj, index, item.obj);
if (r < 0)
{
throw new PythonException();
}
}
/// <summary>
/// Reverse Method
/// </summary>
/// <remarks>
/// Reverse the order of the list object in place.
/// </remarks>
public void Reverse()
{
int r = Runtime.PyList_Reverse(obj);
if (r < 0)
{
throw new PythonException();
}
}
/// <summary>
/// Sort Method
/// </summary>
/// <remarks>
/// Sort the list in place.
/// </remarks>
public void Sort()
{
int r = Runtime.PyList_Sort(obj);
if (r < 0)
{
throw new PythonException();
}
}
}
}