DeflateStreamNative.cs

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using System;
using System.Runtime.InteropServices;
using Mono.Util;
 
namespace System.IO.Compression
{
    // Token: 0x02000440 RID: 1088
    internal class DeflateStreamNative
    {
        // Token: 0x06001DDE RID: 7646 RVA: 0x0004FF20 File Offset: 0x0004E120
        private DeflateStreamNative()
        {
        }
 
        // Token: 0x06001DDF RID: 7647 RVA: 0x0004FF34 File Offset: 0x0004E134
        public static DeflateStreamNative Create(Stream compressedStream, CompressionMode mode, bool gzip)
        {
        }
 
        // Token: 0x06001DE0 RID: 7648 RVA: 0x0004FF48 File Offset: 0x0004E148
        protected override void Finalize()
        {
            long num = 0L;
            this.Dispose(num != 0L);
            base.Finalize();
        }
 
        // Token: 0x06001DE1 RID: 7649 RVA: 0x0004FF88 File Offset: 0x0004E188
        public void Dispose(bool disposing)
        {
            bool flag = this.disposed;
            if (flag)
            {
                if (!flag)
                {
                }
                if (this.z_stream != null)
                {
                    this.z_stream.Dispose();
                }
                return;
            }
            int num = 1;
            this.disposed = num != 0;
            GC.SuppressFinalize(this);
        }
 
        // Token: 0x06001DE2 RID: 7650 RVA: 0x0004FFC8 File Offset: 0x0004E1C8
        public void Flush()
        {
            int num = DeflateStreamNative.Flush(this.z_stream);
            this.CheckResult(num, "Flush");
        }
 
        // Token: 0x06001DE3 RID: 7651 RVA: 0x0004FFF0 File Offset: 0x0004E1F0
        public int ReadZStream(IntPtr buffer, int length)
        {
            int num = DeflateStreamNative.ReadZStream(this.z_stream, buffer, length);
            this.CheckResult(num, "ReadInternal");
            return num;
        }
 
        // Token: 0x06001DE4 RID: 7652 RVA: 0x00050018 File Offset: 0x0004E218
        public void WriteZStream(IntPtr buffer, int length)
        {
            int num = DeflateStreamNative.WriteZStream(this.z_stream, buffer, length);
            this.CheckResult(num, "WriteInternal");
        }
 
        // Token: 0x06001DE5 RID: 7653 RVA: 0x00050040 File Offset: 0x0004E240
        [Mono.Util.MonoPInvokeCallback(typeof(DeflateStreamNative.UnmanagedReadOrWrite))]
        private static int UnmanagedRead(IntPtr buffer, int length, IntPtr data)
        {
            GCHandle gchandle = GCHandle.FromIntPtr((IntPtr)length);
            if (gchandle.Target != null)
            {
            }
            int num;
            return num;
        }
 
        // Token: 0x06001DE6 RID: 7654 RVA: 0x00050060 File Offset: 0x0004E260
        private int UnmanagedRead(IntPtr buffer, int length)
        {
            /*
An exception occurred when decompiling this method (06001DE6)
 
ICSharpCode.Decompiler.DecompilerException: Error decompiling System.Int32 System.IO.Compression.DeflateStreamNative::UnmanagedRead(System.IntPtr,System.Int32)
 
 ---> System.Exception: Basic block has to end with unconditional control flow. 
{
    IL_000E:
    stloc:int32(var_1_15, call:int32(Math::Min, ldloc:int32(length), ldloc:int32(var_0)))
    stloc:Stream(var_2_1C, ldfld:Stream(DeflateStreamNative::base_stream, ldloc:DeflateStreamNative(this)))
    stloc:uint8[](var_3_23, ldfld:uint8[](DeflateStreamNative::io_buffer, ldloc:DeflateStreamNative(this)))
    stloc:uint8[](var_4_2A, ldfld:uint8[](DeflateStreamNative::io_buffer, ldloc:DeflateStreamNative(this)))
}
 
   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1852
   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.Optimize(DecompilerContext context, ILBlock method, AutoPropertyProvider autoPropertyProvider, StateMachineKind& stateMachineKind, MethodDef& inlinedMethod, AsyncMethodDebugInfo& asyncInfo, ILAstOptimizationStep abortBeforeStep) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 355
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(IEnumerable`1 parameters, MethodDebugInfoBuilder& builder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 123
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 88
   --- End of inner exception stack trace ---
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 92
   at ICSharpCode.Decompiler.Ast.AstBuilder.AddMethodBody(EntityDeclaration methodNode, EntityDeclaration& updatedNode, MethodDef method, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, MethodKind methodKind) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstBuilder.cs:line 1683
*/;
        }
 
        // Token: 0x06001DE7 RID: 7655 RVA: 0x000500A0 File Offset: 0x0004E2A0
        [Mono.Util.MonoPInvokeCallback(typeof(DeflateStreamNative.UnmanagedReadOrWrite))]
        private static int UnmanagedWrite(IntPtr buffer, int length, IntPtr data)
        {
            GCHandle gchandle = GCHandle.FromIntPtr((IntPtr)length);
            if (gchandle.Target != null)
            {
            }
            int num;
            return num;
        }
 
        // Token: 0x06001DE8 RID: 7656 RVA: 0x000500C0 File Offset: 0x0004E2C0
        private int UnmanagedWrite(IntPtr buffer, int length)
        {
            /*
An exception occurred when decompiling this method (06001DE8)
 
ICSharpCode.Decompiler.DecompilerException: Error decompiling System.Int32 System.IO.Compression.DeflateStreamNative::UnmanagedWrite(System.IntPtr,System.Int32)
 
 ---> System.Exception: Basic block has to end with unconditional control flow. 
{
    IL_0013:
    stloc:int32(var_2_1A, call:int32(Math::Min, ldloc:int32(length), ldloc:int32(var_1)))
    stloc:uint8[](var_3_21, ldfld:uint8[](DeflateStreamNative::io_buffer, ldloc:DeflateStreamNative(this)))
    stloc:int64(var_4_23, ldc.i4:int64(0))
    call:void(Marshal::Copy, ldloc:native int(buffer), ldloc:uint8[](var_3_21), ldloc:int64[exp:int32](var_4_23), ldloc:int32(var_2_1A))
    stloc:Stream(var_5_35, ldfld:Stream(DeflateStreamNative::base_stream, ldloc:DeflateStreamNative(this)))
    stloc:uint8[](var_6_3D, ldfld:uint8[](DeflateStreamNative::io_buffer, ldloc:DeflateStreamNative(this)))
}
 
   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1852
   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.Optimize(DecompilerContext context, ILBlock method, AutoPropertyProvider autoPropertyProvider, StateMachineKind& stateMachineKind, MethodDef& inlinedMethod, AsyncMethodDebugInfo& asyncInfo, ILAstOptimizationStep abortBeforeStep) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 355
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(IEnumerable`1 parameters, MethodDebugInfoBuilder& builder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 123
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 88
   --- End of inner exception stack trace ---
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 92
   at ICSharpCode.Decompiler.Ast.AstBuilder.AddMethodBody(EntityDeclaration methodNode, EntityDeclaration& updatedNode, MethodDef method, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, MethodKind methodKind) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstBuilder.cs:line 1683
*/;
        }
 
        // Token: 0x06001DE9 RID: 7657 RVA: 0x00050114 File Offset: 0x0004E314
        private void CheckResult(int result, string where)
        {
        }
 
        // Token: 0x06001DEA RID: 7658
        private static extern DeflateStreamNative.SafeDeflateStreamHandle CreateZStream(CompressionMode compress, bool gzip, DeflateStreamNative.UnmanagedReadOrWrite feeder, IntPtr data);
 
        // Token: 0x06001DEB RID: 7659
        private static extern int CloseZStream(IntPtr stream);
 
        // Token: 0x06001DEC RID: 7660
        private static extern int Flush(DeflateStreamNative.SafeDeflateStreamHandle stream);
 
        // Token: 0x06001DED RID: 7661
        private static extern int ReadZStream(DeflateStreamNative.SafeDeflateStreamHandle stream, IntPtr buffer, int length);
 
        // Token: 0x06001DEE RID: 7662
        private static extern int WriteZStream(DeflateStreamNative.SafeDeflateStreamHandle stream, IntPtr buffer, int length);
 
        // Token: 0x0400140F RID: 5135
        private DeflateStreamNative.UnmanagedReadOrWrite feeder;
 
        // Token: 0x04001410 RID: 5136
        private Stream base_stream;
 
        // Token: 0x04001411 RID: 5137
        private DeflateStreamNative.SafeDeflateStreamHandle z_stream;
 
        // Token: 0x04001412 RID: 5138
        private GCHandle data;
 
        // Token: 0x04001413 RID: 5139
        private bool disposed;
 
        // Token: 0x04001414 RID: 5140
        private byte[] io_buffer;
 
        // Token: 0x04001415 RID: 5141
        private Exception last_error;
 
        // Token: 0x02000441 RID: 1089
        [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
        private sealed class UnmanagedReadOrWrite : MulticastDelegate
        {
            // Token: 0x06001DEF RID: 7663 RVA: 0x0005013C File Offset: 0x0004E33C
            public UnmanagedReadOrWrite(object @object, IntPtr method)
            {
                this.method_ptr = method;
                this.m_target = @object;
                this.method = method;
                this.method_code = this;
            }
 
            // Token: 0x06001DF0 RID: 7664 RVA: 0x00050190 File Offset: 0x0004E390
            public int Invoke(IntPtr buffer, int length, IntPtr data)
            {
                /*
An exception occurred when decompiling this method (06001DF0)
 
ICSharpCode.Decompiler.DecompilerException: Error decompiling System.Int32 System.IO.Compression.DeflateStreamNative/UnmanagedReadOrWrite::Invoke(System.IntPtr,System.Int32,System.IntPtr)
 
 ---> System.Exception: Basic block has to end with unconditional control flow. 
{
    Block_0:
    stloc:native int(var_0_06, ldfld:native int(Delegate::method_code, ldloc:UnmanagedReadOrWrite[exp:Delegate](this)))
    stloc:native int(var_1_0D, ldfld:native int(Delegate::invoke_impl, ldloc:UnmanagedReadOrWrite[exp:Delegate](this)))
    stloc:native int(var_2_14, ldfld:native int(Delegate::method, ldloc:UnmanagedReadOrWrite[exp:Delegate](this)))
}
 
   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1852
   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.Optimize(DecompilerContext context, ILBlock method, AutoPropertyProvider autoPropertyProvider, StateMachineKind& stateMachineKind, MethodDef& inlinedMethod, AsyncMethodDebugInfo& asyncInfo, ILAstOptimizationStep abortBeforeStep) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 355
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(IEnumerable`1 parameters, MethodDebugInfoBuilder& builder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 123
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 88
   --- End of inner exception stack trace ---
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 92
   at ICSharpCode.Decompiler.Ast.AstBuilder.AddMethodBody(EntityDeclaration methodNode, EntityDeclaration& updatedNode, MethodDef method, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, MethodKind methodKind) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstBuilder.cs:line 1683
*/;
            }
        }
 
        // Token: 0x02000442 RID: 1090
        private sealed class SafeDeflateStreamHandle : SafeHandle
        {
            // Token: 0x170006BB RID: 1723
            // (get) Token: 0x06001DF1 RID: 7665 RVA: 0x000501B4 File Offset: 0x0004E3B4
            public override bool IsInvalid
            {
                get
                {
                    IntPtr handle = this.handle;
                    bool flag;
                    return flag;
                }
            }
 
            // Token: 0x06001DF2 RID: 7666 RVA: 0x000501CC File Offset: 0x0004E3CC
            private SafeDeflateStreamHandle()
            {
            }
 
            // Token: 0x06001DF3 RID: 7667 RVA: 0x000501DC File Offset: 0x0004E3DC
            protected override bool ReleaseHandle()
            {
                /*
An exception occurred when decompiling this method (06001DF3)
 
ICSharpCode.Decompiler.DecompilerException: Error decompiling System.Boolean System.IO.Compression.DeflateStreamNative/SafeDeflateStreamHandle::ReleaseHandle()
 
 ---> System.Exception: Basic block has to end with unconditional control flow. 
{
    Block_0:
    stloc:native int(var_0_06, ldfld:native int(SafeHandle::handle, ldloc:SafeDeflateStreamHandle[exp:SafeHandle](this)))
}
 
   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.FlattenBasicBlocks(ILNode node) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 1852
   at ICSharpCode.Decompiler.ILAst.ILAstOptimizer.Optimize(DecompilerContext context, ILBlock method, AutoPropertyProvider autoPropertyProvider, StateMachineKind& stateMachineKind, MethodDef& inlinedMethod, AsyncMethodDebugInfo& asyncInfo, ILAstOptimizationStep abortBeforeStep) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\ILAst\ILAstOptimizer.cs:line 355
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(IEnumerable`1 parameters, MethodDebugInfoBuilder& builder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 123
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 88
   --- End of inner exception stack trace ---
   at ICSharpCode.Decompiler.Ast.AstMethodBodyBuilder.CreateMethodBody(MethodDef methodDef, DecompilerContext context, AutoPropertyProvider autoPropertyProvider, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, StringBuilder sb, MethodDebugInfoBuilder& stmtsBuilder) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstMethodBodyBuilder.cs:line 92
   at ICSharpCode.Decompiler.Ast.AstBuilder.AddMethodBody(EntityDeclaration methodNode, EntityDeclaration& updatedNode, MethodDef method, IEnumerable`1 parameters, Boolean valueParameterIsKeyword, MethodKind methodKind) in D:\a\dnSpy\dnSpy\Extensions\ILSpy.Decompiler\ICSharpCode.Decompiler\ICSharpCode.Decompiler\Ast\AstBuilder.cs:line 1683
*/;
            }
        }
    }
}