v2 fix EvilBeaver#1409: работа ЧтенияДанных из ДвоичныхДанных большого размера

Author: Mr-Rm

src/OneScript.StandardLibrary/Binary/BackingTemporaryFile.cs

@@ -8,7 +8,6 @@ This Source Code Form is subject to the terms of the
 using System;
 using System.IO;
 using Microsoft.Win32.SafeHandles;
-using ScriptEngine;
 
 namespace OneScript.StandardLibrary.Binary
 {
@@ -57,7 +56,7 @@ public void Dispose()
 
         public Stream OpenReadStream()
         {
-            return new FileStream(_backingFilePath, FileMode.Open, FileAccess.Read, FileShare.Read);
+            return new FileStream(_backingFilePath, FileMode.Open, FileAccess.Read, FileShare.Read | FileShare.Delete);
         }
 
         private void Init(Stream source)

src/OneScript.StandardLibrary/Binary/DataReader.cs

@@ -70,24 +70,23 @@ private DataReader(Stream stream, IValue textEncoding, ByteOrderEnum? byteOrder,
         [ScriptConstructor(Name = "На основании двоичных данных или имени файла")]
         public static DataReader Constructor(IValue dataSource, IValue textEncoding = null, ByteOrderEnum? byteOrder = null, string lineSplitter = "\n", string convertibleSplitterOfLines = null)
         {
+            Stream stream;
             if (dataSource.SystemType == BasicTypes.String)
             {
-                var stream = new FileStream(dataSource.AsString(), FileMode.Open, FileAccess.Read, FileShare.Read);
-                return new DataReader(stream, textEncoding, byteOrder, lineSplitter, convertibleSplitterOfLines);
+                stream = new FileStream(dataSource.AsString(), FileMode.Open, FileAccess.Read, FileShare.Read);
             }
             else
             {
-                var obj = dataSource.AsObject();
-                Stream stream;
-                if (obj is BinaryDataContext)
-                    stream = ((BinaryDataContext)obj).GetStream();
-                else if (obj is IStreamWrapper)
-                    stream = ((IStreamWrapper) obj).GetUnderlyingStream();
-                else
-                    throw RuntimeException.InvalidArgumentType("dataSource");
+                stream = dataSource.AsObject() switch
+                {
+                    BinaryDataContext binaryData => binaryData.GetStream(),
+                    IStreamWrapper wrapper => wrapper.GetUnderlyingStream(),
 
-                return new DataReader(stream, textEncoding, byteOrder, lineSplitter, convertibleSplitterOfLines);
+                    _ => throw RuntimeException.InvalidArgumentType("dataSource")
+                };
             }
+
+            return new DataReader(stream, textEncoding, byteOrder, lineSplitter, convertibleSplitterOfLines);
         }
 
         /// <summary>