[Swift] Implements FlatbuffersVector which confirms to RandomAccessCollection (#8752)

* Implements FlatbuffersVector in swift

Implements FlatbuffersVector which confirms to RandomAccessCollection,
this would give us semi-native sugary syntax to all the arrays in swift port.

This work will also be the foundation of using arrays in swift

* Fix failing tests for Swift

swift/Sources/FlexBuffers/Reader/FixedTypedVector.swift

@@ -31,8 +31,8 @@ public struct FixedTypedVector: FlexBufferVector {
     offset: Int,
     byteWidth: UInt8,
     type: FlexBufferType,
-    count: Int
-  ) {
+    count: Int)
+  {
     self.byteBuffer = byteBuffer
     self.offset = offset
     self.byteWidth = byteWidth

swift/Sources/FlexBuffers/Reader/FlexBufferVector.swift

@@ -39,14 +39,13 @@ public protocol FlexBufferContiguousBytes {
   var count: Int { get }
 
   func withUnsafeRawBufferPointer<Result>(
-    _ body: (UnsafeRawBufferPointer) throws -> Result
-  ) rethrows -> Result
+    _ body: (UnsafeRawBufferPointer) throws -> Result) rethrows -> Result
 }
 
 extension FlexBufferContiguousBytes {
   public func withUnsafeRawBufferPointer<Result>(
-    _ body: (UnsafeRawBufferPointer) throws -> Result
-  ) rethrows -> Result {
+    _ body: (UnsafeRawBufferPointer) throws -> Result) rethrows -> Result
+  {
     try byteBuffer.withUnsafePointerToSlice(
       index: offset,
       count: count,

swift/Sources/FlexBuffers/Reader/Reference.swift

@@ -58,8 +58,8 @@ public struct Reference {
     byteBuffer: ByteBuffer,
     offset: Int,
     parentWidth: UInt8,
-    packedType: UInt8
-  ) {
+    packedType: UInt8)
+  {
     guard let type = FlexBufferType(rawValue: UInt64(packedType >> 2)) else {
       return nil
     }
@@ -76,8 +76,8 @@ public struct Reference {
     offset: Int,
     parentWidth: UInt8,
     byteWidth: UInt8,
-    type: FlexBufferType
-  ) {
+    type: FlexBufferType)
+  {
     self.byteBuffer = byteBuffer
     self.offset = offset
     self.parentWidth = parentWidth
@@ -241,8 +241,7 @@ public struct Reference {
   @inline(__always)
   public func withUnsafeRawPointer<Result>(
     _ completion: (UnsafeRawPointer) throws
-      -> Result
-  )
+      -> Result)
     rethrows -> Result?
   {
     return try byteBuffer.readWithUnsafeRawPointer(

swift/Sources/FlexBuffers/Reader/TypedVector.swift

@@ -30,8 +30,8 @@ public struct TypedVector: FlexBufferVector {
     byteBuffer: ByteBuffer,
     offset: Int,
     byteWidth: UInt8,
-    type: FlexBufferType
-  ) {
+    type: FlexBufferType)
+  {
     self.byteBuffer = byteBuffer
     self.offset = offset
     self.byteWidth = byteWidth
@@ -54,8 +54,8 @@ public struct TypedVector: FlexBufferVector {
   static func mapKeys(
     byteBuffer: ByteBuffer,
     offset: Int,
-    byteWidth: UInt8
-  ) -> TypedVector {
+    byteWidth: UInt8) -> TypedVector
+  {
     let prefixedFields = 3
     let keysOffset = offset &- (numericCast(byteWidth) &* prefixedFields)
 
@@ -88,8 +88,8 @@ extension TypedVector {
       byteWidth)
 
     return byteBuffer.readWithUnsafeRawPointer(
-      position: indirectoffset
-    ) { bufPointer in
+      position: indirectoffset)
+    { bufPointer in
       target.withCString { strPointer in
         Int(strcmp(bufPointer, strPointer))
       }