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88 lines (75 loc) · 3.11 KB
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/* ****************************************************************************
*
* Copyright (c) Microsoft Corporation.
*
* This source code is subject to terms and conditions of the Apache License, Version 2.0. A
* copy of the license can be found in the License.html file at the root of this distribution. If
* you cannot locate the Apache License, Version 2.0, please send an email to
* [email protected]. By using this source code in any fashion, you are agreeing to be bound
* by the terms of the Apache License, Version 2.0.
*
* You must not remove this notice, or any other, from this software.
*
*
* ***************************************************************************/
#if FEATURE_NATIVE
using System.Collections.Generic;
using Microsoft.Scripting;
using IronPython.Runtime;
using IronPython.Runtime.Operations;
using IronPython.Runtime.Types;
namespace IronPython.Modules {
/// <summary>
/// Provides support for interop with native code from Python code.
/// </summary>
public static partial class CTypes {
/// <summary>
/// Base class for data structures. Subclasses can define _fields_ which
/// specifies the in memory layout of the values. Instances can then
/// be created with the initial values provided as the array. The values
/// can then be accessed from the instance by field name. The value can also
/// be passed to a foreign C API and the type can be used in other structures.
///
/// class MyStructure(Structure):
/// _fields_ = [('a', c_int), ('b', c_int)]
///
/// MyStructure(1, 2).a
/// MyStructure()
///
/// class MyOtherStructure(Structure):
/// _fields_ = [('c', MyStructure), ('b', c_int)]
///
/// MyOtherStructure((1, 2), 3)
/// MyOtherStructure(MyStructure(1, 2), 3)
/// </summary>
[PythonType("Structure")]
public abstract class _Structure : CData {
protected _Structure() {
((StructType)NativeType).EnsureFinal();
_memHolder = new MemoryHolder(NativeType.Size);
}
public void __init__(params object[] args) {
CheckAbstract();
INativeType nativeType = NativeType;
StructType st = (StructType)nativeType;
st.SetValueInternal(_memHolder, 0, args);
}
public void __init__(CodeContext/*!*/ context, [ParamDictionary]IDictionary<string, object> kwargs) {
CheckAbstract();
foreach (var x in kwargs) {
PythonOps.SetAttr(context, this, x.Key, x.Value);
}
}
private void CheckAbstract() {
object abstractCls;
if (((PythonType)NativeType).TryGetBoundAttr(((PythonType)NativeType).Context.SharedContext,
this,
"_abstract_",
out abstractCls)) {
throw PythonOps.TypeError("abstract class");
}
}
}
}
}
#endif