KeyHandler // Upgrade certain condition structures.

Source/Modules/ControllerModules/KeyHandler_HandleCandidate.swift

@@ -293,14 +293,12 @@ extension KeyHandler {
     let match: String =
       (state is InputState.AssociatedPhrases) ? input.inputTextIgnoringModifiers ?? "" : inputText
 
-    var j = 0
-    while j < ctlCandidateCurrent.keyLabels.count {
+    for j in 0..<ctlCandidateCurrent.keyLabels.count {
       let label: CandidateKeyLabel = ctlCandidateCurrent.keyLabels[j]
       if match.compare(label.key, options: .caseInsensitive, range: nil, locale: .current) == .orderedSame {
         index = j
         break
       }
-      j += 1
     }
 
     if index != NSNotFound {

Source/Modules/ControllerModules/KeyHandler_States.swift

@@ -57,16 +57,17 @@ extension KeyHandler {
       if readingCursorIndex + spanningLength <= compositor.cursor {
         composedStringCursorIndex += strNodeValue.utf16.count
         readingCursorIndex += spanningLength
-      } else {
+        continue
+      }
       if codepointCount == spanningLength {
-          var i = 0
-          while i < codepointCount, readingCursorIndex < compositor.cursor {
+        for i in 0..<codepointCount {
+          guard readingCursorIndex < compositor.cursor else { continue }
           composedStringCursorIndex += arrSplit[i].utf16.count
           readingCursorIndex += 1
-            i += 1
         }
-        } else {
-          if readingCursorIndex < compositor.cursor {
+        continue
+      }
+      guard readingCursorIndex < compositor.cursor else { continue }
       composedStringCursorIndex += strNodeValue.utf16.count
       readingCursorIndex += spanningLength
       readingCursorIndex = min(readingCursorIndex, compositor.cursor)
@@ -86,6 +87,7 @@ extension KeyHandler {
           tooltipParameterRef[1] = compositor.readings[compositor.cursor]
       }
       /// 注音轉拼音
+      guard tooltipParameterRef != ["", ""] else { continue }
       for (i, _) in tooltipParameterRef.enumerated() {
         if tooltipParameterRef[i].isEmpty { continue }
         if tooltipParameterRef[i].contains("_") { continue }
@@ -98,9 +100,6 @@ extension KeyHandler {
         }
       }
     }
-        }
-      }
-    }
 
     /// 再接下來，藉由已經計算成功的「可見游標位置」，咱們計算一下在這個游標之前與之後的
     /// 組字區內容，以便之後在這之間插入正在輸入的漢字讀音（藉由鐵恨 composer 注拼槽取得）。
@@ -126,12 +125,11 @@ extension KeyHandler {
     // 防止組字區內出現不可列印的字元。
     var cleanedComposition = ""
     for theChar in composedText {
-      if let charCode = theChar.utf16.first {
+      guard let charCode = theChar.utf16.first else { continue }
       if !(theChar.isASCII && !(charCode.isPrintable)) {
         cleanedComposition += String(theChar)
       }
     }
-    }
 
     /// 這裡生成準備要拿來回呼的「正在輸入」狀態，但還不能立即使用，因為工具提示仍未完成。
     let stateResult = InputState.Inputting(composingBuffer: cleanedComposition, cursorIndex: cursorIndex)