Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / whidbey / netfxsp / ndp / clr / src / BCL / System / ArgIterator.cs / 1 / ArgIterator.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== namespace System { using System; using System.Runtime.InteropServices; using System.Runtime.CompilerServices; // This class will not be marked serializable [StructLayout(LayoutKind.Auto)] public struct ArgIterator { [MethodImplAttribute(MethodImplOptions.InternalCall)] private extern ArgIterator(IntPtr arglist); // create an arg iterator that points at the first argument that // is not statically declared (that is the first ... arg) // 'arglist' is the value returned by the ARGLIST instruction public ArgIterator(RuntimeArgumentHandle arglist) : this(arglist.Value) { } [MethodImplAttribute(MethodImplOptions.InternalCall)] private unsafe extern ArgIterator(IntPtr arglist, void *ptr); // create an arg iterator that points just past 'firstArg'. // 'arglist' is the value returned by the ARGLIST instruction // This is much like the C va_start macro [CLSCompliant(false)] public unsafe ArgIterator(RuntimeArgumentHandle arglist, void* ptr) : this(arglist.Value, ptr) { } // Fetch an argument as a typed referece, advance the iterator. // Throws an exception if past end of argument list [CLSCompliant(false)] public TypedReference GetNextArg() { TypedReference result = new TypedReference (); // reference to TypedReference is banned, so have to pass result as pointer unsafe { FCallGetNextArg (&result); } return result; } [MethodImplAttribute(MethodImplOptions.InternalCall)] // reference to TypedReference is banned, so have to pass result as void pointer private unsafe extern void FCallGetNextArg(void * result); // Alternate version of GetNextArg() intended primarily for IJW code // generated by VC's "va_arg()" construct. [CLSCompliant(false)] public TypedReference GetNextArg(RuntimeTypeHandle rth) { if (sigPtr != IntPtr.Zero) { // This is an ordinary ArgIterator capable of determining // types from a signature. Just do a regular GetNextArg. return GetNextArg(); } else { // Prevent abuse of this API with a default ArgIterator (it // doesn't require permission to create a zero-inited value // type). Check that ArgPtr isn't zero or this API will allow a // malicious caller to increment the pointer to an arbitrary // location in memory and read the contents. if (ArgPtr == IntPtr.Zero) throw new ArgumentNullException(); TypedReference result = new TypedReference (); // reference to TypedReference is banned, so have to pass result as pointer unsafe { InternalGetNextArg(&result, rth); } return result; } } [MethodImplAttribute(MethodImplOptions.InternalCall)] // reference to TypedReference is banned, so have to pass result as void pointer private unsafe extern void InternalGetNextArg(void * result, RuntimeTypeHandle rth); // This method should invalidate the iterator (va_end). It is not supported yet. public void End() { } // How many arguments are left in the list [MethodImplAttribute(MethodImplOptions.InternalCall)] public extern int GetRemainingCount(); // Gets the type of the current arg, does NOT advance the iterator [MethodImplAttribute(MethodImplOptions.InternalCall)] private extern unsafe void* _GetNextArgType(); public unsafe RuntimeTypeHandle GetNextArgType() { return new RuntimeTypeHandle(_GetNextArgType()); } public override int GetHashCode() { return unchecked((int)((long)ArgCookie)); } // Inherited from object public override bool Equals(Object o) { throw new NotSupportedException(Environment.GetResourceString("NotSupported_NYI")); } private IntPtr ArgCookie; // Cookie from the EE. // The SigPtr structure consists of the following members private IntPtr sigPtr; // Pointer to remaining signature. private IntPtr sigPtrLen; // Remaining length of the pointer // Note, sigPtrLen is actually a DWORD, but on 64bit systems this structure becomes // 8-byte aligned, which requires us to pad it. private IntPtr ArgPtr; // Pointer to remaining args. private int RemainingArgs; // # of remaining args. } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== namespace System { using System; using System.Runtime.InteropServices; using System.Runtime.CompilerServices; // This class will not be marked serializable [StructLayout(LayoutKind.Auto)] public struct ArgIterator { [MethodImplAttribute(MethodImplOptions.InternalCall)] private extern ArgIterator(IntPtr arglist); // create an arg iterator that points at the first argument that // is not statically declared (that is the first ... arg) // 'arglist' is the value returned by the ARGLIST instruction public ArgIterator(RuntimeArgumentHandle arglist) : this(arglist.Value) { } [MethodImplAttribute(MethodImplOptions.InternalCall)] private unsafe extern ArgIterator(IntPtr arglist, void *ptr); // create an arg iterator that points just past 'firstArg'. // 'arglist' is the value returned by the ARGLIST instruction // This is much like the C va_start macro [CLSCompliant(false)] public unsafe ArgIterator(RuntimeArgumentHandle arglist, void* ptr) : this(arglist.Value, ptr) { } // Fetch an argument as a typed referece, advance the iterator. // Throws an exception if past end of argument list [CLSCompliant(false)] public TypedReference GetNextArg() { TypedReference result = new TypedReference (); // reference to TypedReference is banned, so have to pass result as pointer unsafe { FCallGetNextArg (&result); } return result; } [MethodImplAttribute(MethodImplOptions.InternalCall)] // reference to TypedReference is banned, so have to pass result as void pointer private unsafe extern void FCallGetNextArg(void * result); // Alternate version of GetNextArg() intended primarily for IJW code // generated by VC's "va_arg()" construct. [CLSCompliant(false)] public TypedReference GetNextArg(RuntimeTypeHandle rth) { if (sigPtr != IntPtr.Zero) { // This is an ordinary ArgIterator capable of determining // types from a signature. Just do a regular GetNextArg. return GetNextArg(); } else { // Prevent abuse of this API with a default ArgIterator (it // doesn't require permission to create a zero-inited value // type). Check that ArgPtr isn't zero or this API will allow a // malicious caller to increment the pointer to an arbitrary // location in memory and read the contents. if (ArgPtr == IntPtr.Zero) throw new ArgumentNullException(); TypedReference result = new TypedReference (); // reference to TypedReference is banned, so have to pass result as pointer unsafe { InternalGetNextArg(&result, rth); } return result; } } [MethodImplAttribute(MethodImplOptions.InternalCall)] // reference to TypedReference is banned, so have to pass result as void pointer private unsafe extern void InternalGetNextArg(void * result, RuntimeTypeHandle rth); // This method should invalidate the iterator (va_end). It is not supported yet. public void End() { } // How many arguments are left in the list [MethodImplAttribute(MethodImplOptions.InternalCall)] public extern int GetRemainingCount(); // Gets the type of the current arg, does NOT advance the iterator [MethodImplAttribute(MethodImplOptions.InternalCall)] private extern unsafe void* _GetNextArgType(); public unsafe RuntimeTypeHandle GetNextArgType() { return new RuntimeTypeHandle(_GetNextArgType()); } public override int GetHashCode() { return unchecked((int)((long)ArgCookie)); } // Inherited from object public override bool Equals(Object o) { throw new NotSupportedException(Environment.GetResourceString("NotSupported_NYI")); } private IntPtr ArgCookie; // Cookie from the EE. // The SigPtr structure consists of the following members private IntPtr sigPtr; // Pointer to remaining signature. private IntPtr sigPtrLen; // Remaining length of the pointer // Note, sigPtrLen is actually a DWORD, but on 64bit systems this structure becomes // 8-byte aligned, which requires us to pad it. private IntPtr ArgPtr; // Pointer to remaining args. private int RemainingArgs; // # of remaining args. } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- WindowsTokenRoleProvider.cs
- MissingSatelliteAssemblyException.cs
- WebPartZoneCollection.cs
- MultiBindingExpression.cs
- DiscoveryDocumentSerializer.cs
- _Semaphore.cs
- SharedPerformanceCounter.cs
- WebBrowserContainer.cs
- KeyFrames.cs
- Fault.cs
- SequentialActivityDesigner.cs
- XmlQueryType.cs
- DataBinder.cs
- AutoScrollExpandMessageFilter.cs
- CounterSetInstance.cs
- DiagnosticsConfiguration.cs
- httpstaticobjectscollection.cs
- CompilerError.cs
- ActivityXRefConverter.cs
- WebPartRestoreVerb.cs
- CounterCreationData.cs
- Drawing.cs
- FontStyles.cs
- Brush.cs
- WpfXamlMember.cs
- SkipStoryboardToFill.cs
- SqlWriter.cs
- ObjectDataSourceView.cs
- Action.cs
- TextBlock.cs
- Parser.cs
- _SslState.cs
- _ChunkParse.cs
- MostlySingletonList.cs
- ModelService.cs
- EntityDesignerUtils.cs
- AuthenticationManager.cs
- SafeTimerHandle.cs
- ReadOnlyObservableCollection.cs
- ClientBuildManagerCallback.cs
- Image.cs
- PageStatePersister.cs
- ControlPager.cs
- StrokeSerializer.cs
- ModuleBuilderData.cs
- RichTextBox.cs
- dbenumerator.cs
- TableRow.cs
- TrayIconDesigner.cs
- StructuredTypeEmitter.cs
- SamlSecurityToken.cs
- XsdCachingReader.cs
- XmlUrlResolver.cs
- ConstructorNeedsTagAttribute.cs
- FaultImportOptions.cs
- ValueTable.cs
- ImageListUtils.cs
- EdgeModeValidation.cs
- Int64AnimationUsingKeyFrames.cs
- BasicExpandProvider.cs
- LogConverter.cs
- FixedSOMTable.cs
- HttpHandlerAction.cs
- Keywords.cs
- SelectionListComponentEditor.cs
- WebSysDefaultValueAttribute.cs
- MonthCalendarDesigner.cs
- HttpCacheVaryByContentEncodings.cs
- PeerConnector.cs
- ConnectionPoint.cs
- HostingEnvironment.cs
- TemplateControlBuildProvider.cs
- Membership.cs
- SoapCodeExporter.cs
- TreeNodeCollection.cs
- XomlDesignerLoader.cs
- PageParserFilter.cs
- ClaimComparer.cs
- DataGridViewSelectedRowCollection.cs
- RightsManagementInformation.cs
- UnsafeNativeMethods.cs
- ArrayItemReference.cs
- SqlDelegatedTransaction.cs
- ParserExtension.cs
- OdbcException.cs
- EntityParameter.cs
- CopyOfAction.cs
- TextDecoration.cs
- XmlAtomicValue.cs
- Floater.cs
- COM2ExtendedUITypeEditor.cs
- LiteralTextParser.cs
- MemoryPressure.cs
- ConstructorNeedsTagAttribute.cs
- DoubleUtil.cs
- EditCommandColumn.cs
- ListBindingConverter.cs
- DataGridViewRowPostPaintEventArgs.cs
- TreeIterators.cs
- WebBrowserHelper.cs