From cc0f4ab45c0d52f67d38c9ee44186f26034f9a8d Mon Sep 17 00:00:00 2001
From: Martin Eberl <martin.eberl@bytepoets.com>
Date: Fri, 17 Aug 2018 08:36:56 +0200
Subject: [PATCH] backwards compatibility to swift3

---
 .../xcschemes/PinCodeTextField.xcscheme         |  3 +--
 Pod/Extensions/StringExtension.swift            | 17 +++++++++++++++++
 Pod/PinCodeTextField.swift                      |  8 ++++----
 Pod/TextHelper/TextHelper.swift                 |  4 ++--
 4 files changed, 24 insertions(+), 8 deletions(-)

diff --git a/PinCodeTextField.xcodeproj/xcshareddata/xcschemes/PinCodeTextField.xcscheme b/PinCodeTextField.xcodeproj/xcshareddata/xcschemes/PinCodeTextField.xcscheme
index 4a06e6e..5e270a8 100644
--- a/PinCodeTextField.xcodeproj/xcshareddata/xcschemes/PinCodeTextField.xcscheme
+++ b/PinCodeTextField.xcodeproj/xcshareddata/xcschemes/PinCodeTextField.xcscheme
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
    LastUpgradeVersion = "0820"
-   version = "1.3">
+   version = "1.8">
    <BuildAction
       parallelizeBuildables = "YES"
       buildImplicitDependencies = "YES">
@@ -56,7 +56,6 @@
       buildConfiguration = "Debug"
       selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
       selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
-      language = ""
       launchStyle = "0"
       useCustomWorkingDirectory = "NO"
       ignoresPersistentStateOnLaunch = "NO"
diff --git a/Pod/Extensions/StringExtension.swift b/Pod/Extensions/StringExtension.swift
index 5182a9d..4fb9a0b 100644
--- a/Pod/Extensions/StringExtension.swift
+++ b/Pod/Extensions/StringExtension.swift
@@ -12,4 +12,21 @@ internal extension String {
     var hasOnlyNewlineSymbols: Bool {
         return trimmingCharacters(in: CharacterSet.newlines).isEmpty
     }
+    
+    var length: Int {
+        #if swift(>=3.2)
+            return count
+        #else
+            return characters.count
+        #endif
+    }
+    
+    @available(swift 3.0)
+    @discardableResult mutating func removeLastCharacter() -> String  {
+        #if swift(>=3.2)
+            return String(removeLast())
+        #else
+            return String(characters.removeLast())
+        #endif
+    }
 }
diff --git a/Pod/PinCodeTextField.swift b/Pod/PinCodeTextField.swift
index e23165a..f4c8c11 100644
--- a/Pod/PinCodeTextField.swift
+++ b/Pod/PinCodeTextField.swift
@@ -223,7 +223,7 @@ import UIKit
     }
     
     private func isPlaceholder(_ i: Int) -> Bool {
-        let inputTextCount = text?.count ?? 0
+        let inputTextCount = text?.length ?? 0
         return i >= inputTextCount
     }
     
@@ -297,7 +297,7 @@ import UIKit
         let newText = text.map { $0 + character } ?? character
         let isNewline = character.hasOnlyNewlineSymbols
         let isCharacterMatchingCharacterSet = character.trimmingCharacters(in: allowedCharacterSet).isEmpty
-        let isLengthWithinLimit = newText.count <= characterLimit
+        let isLengthWithinLimit = newText.length <= characterLimit
         return !isNewline && isCharacterMatchingCharacterSet && isLengthWithinLimit
     }
 }
@@ -324,7 +324,7 @@ extension PinCodeTextField: UIKeyInput {
             let newText = text.map { $0 + charToInsert } ?? charToInsert
             text = newText
             delegate?.textFieldValueChanged(self)
-            if (newText.count == characterLimit) {
+            if (newText.length == characterLimit) {
                 if (delegate?.textFieldShouldEndEditing(self) ?? true) {
                     let _ = resignFirstResponder()
                 }
@@ -334,7 +334,7 @@ extension PinCodeTextField: UIKeyInput {
     
     public func deleteBackward() {
         guard hasText else { return }
-        text?.removeLast()
+        text?.removeLastCharacter()
         delegate?.textFieldValueChanged(self)
     }
 }
diff --git a/Pod/TextHelper/TextHelper.swift b/Pod/TextHelper/TextHelper.swift
index f09b2a0..bfa1df2 100644
--- a/Pod/TextHelper/TextHelper.swift
+++ b/Pod/TextHelper/TextHelper.swift
@@ -20,8 +20,8 @@ class TextHelper {
     }
     
     func character(atIndex i: Int) -> Character? {
-        let inputTextCount = text?.count ?? 0
-        let placeholderTextLength = placeholderText?.count ?? 0
+        let inputTextCount = text?.length ?? 0
+        let placeholderTextLength = placeholderText?.length ?? 0
         let character: Character?
         if i < inputTextCount {
             let string = text ?? ""