Move byte buffer stuff to own file

Maybe I should submit that to NIO itself.

Author: helje5

Sources/NIORedis/ByteBufferExtras.swift

@@ -0,0 +1,82 @@
+//===----------------------------------------------------------------------===//
+//
+// This source file is part of the swift-nio-redis open source project
+//
+// Copyright (c) 2018 ZeeZide GmbH. and the swift-nio-redis project authors
+// Licensed under Apache License v2.0
+//
+// See LICENSE.txt for license information
+// See CONTRIBUTORS.txt for the list of SwiftNIO project authors
+//
+// SPDX-License-Identifier: Apache-2.0
+//
+//===----------------------------------------------------------------------===//
+
+import struct NIO.ByteBuffer
+
+fileprivate extension BinaryInteger {
+  
+  var numberOfDecimalDigits : Int {
+    @inline(__always) get {
+      var value = self
+      var count = 0
+      
+      repeat {
+        value /= 10
+        count += 1
+      }
+      while value != 0
+      
+      return count
+    }
+  }
+}
+
+extension ByteBuffer {
+  
+  @discardableResult
+  public mutating func write<T: SignedInteger>(integerAsString integer: T,
+                                               as: T.Type = T.self) -> Int
+  {
+    let bytesWritten = set(integerAsString: integer, at: self.writerIndex)
+    moveWriterIndex(forwardBy: bytesWritten)
+    return Int(bytesWritten)
+  }
+
+  @discardableResult
+  public mutating func set<T: SignedInteger>(integerAsString integer: T,
+                                             at index: Int,
+                                             as: T.Type = T.self) -> Int
+  {
+    let charCount = integer.numberOfDecimalDigits + (integer < 0 ? 1 : 0)
+    let avail     = capacity - index
+    
+    if avail < charCount {
+      changeCapacity(to: capacity + (charCount - avail))
+    }
+
+    self.withVeryUnsafeBytes { rbpp in
+      let mrbpp  = UnsafeMutableRawBufferPointer(mutating: rbpp)
+      let base   = mrbpp.baseAddress!.assumingMemoryBound(to: UInt8.self)
+                        .advanced(by: index)
+      var cursor = base.advanced(by: charCount)
+      
+      let c0 : T = 48
+      var negativeAbsoluteValue = integer < 0 ? integer : -integer
+      repeat {
+        cursor -= 1
+        cursor.pointee = UInt8(c0 - (negativeAbsoluteValue % 10))
+        negativeAbsoluteValue /= 10;
+      }
+      while negativeAbsoluteValue != 0
+      
+      if integer < 0 {
+        cursor -= 1
+        cursor.pointee = 45 // -
+      }
+
+    }
+    
+    return charCount
+  }
+}

Sources/NIORedis/RESPChannelHandler.swift

@@ -261,70 +261,3 @@ fileprivate enum ConstantBuffers {
     return bb
   }()
 }
-
-fileprivate extension BinaryInteger {
-  
-  var numberOfDecimalDigits : Int {
-    @inline(__always) get {
-      var value = self
-      var count = 0
-      
-      repeat {
-        value /= 10
-        count += 1
-      }
-      while value != 0
-      
-      return count
-    }
-  }
-}
-
-extension ByteBuffer {
-  
-  @discardableResult
-  public mutating func write<T: SignedInteger>(integerAsString integer: T,
-                                               as: T.Type = T.self) -> Int
-  {
-    let bytesWritten = set(integerAsString: integer, at: self.writerIndex)
-    moveWriterIndex(forwardBy: bytesWritten)
-    return Int(bytesWritten)
-  }
-
-  @discardableResult
-  public mutating func set<T: SignedInteger>(integerAsString integer: T,
-                                             at index: Int,
-                                             as: T.Type = T.self) -> Int
-  {
-    let charCount = integer.numberOfDecimalDigits + (integer < 0 ? 1 : 0)
-    let avail     = capacity - index
-    
-    if avail < charCount {
-      changeCapacity(to: capacity + (charCount - avail))
-    }
-
-    self.withVeryUnsafeBytes { rbpp in
-      let mrbpp  = UnsafeMutableRawBufferPointer(mutating: rbpp)
-      let base   = mrbpp.baseAddress!.assumingMemoryBound(to: UInt8.self)
-                        .advanced(by: index)
-      var cursor = base.advanced(by: charCount)
-      
-      let c0 : T = 48
-      var negativeAbsoluteValue = integer < 0 ? integer : -integer
-      repeat {
-        cursor -= 1
-        cursor.pointee = UInt8(c0 - (negativeAbsoluteValue % 10))
-        negativeAbsoluteValue /= 10;
-      }
-      while negativeAbsoluteValue != 0
-      
-      if integer < 0 {
-        cursor -= 1
-        cursor.pointee = 45 // -
-      }
-
-    }
-    
-    return charCount
-  }
-}