Move getCamelWords() to the strings.dart file.

pkg/analysis_server/lib/src/services/correction/strings.dart

Index: pkg/analysis_server/lib/src/services/correction/strings.dart
diff --git a/pkg/analysis_server/lib/src/services/correction/strings.dart b/pkg/analysis_server/lib/src/services/correction/strings.dart
index 3c44fb626d5875c576330e55f5a55d44537e355f..c2ea6cbcb49b5395005f10e9132241192df26b74 100644
--- a/pkg/analysis_server/lib/src/services/correction/strings.dart
+++ b/pkg/analysis_server/lib/src/services/correction/strings.dart
@@ -119,6 +119,46 @@ int findCommonSuffix(String a, String b) {
 }
 
 /**
+ * Returns a list of words for the given camel case string.
+ *
+ * 'getCamelWords' => ['get', 'Camel', 'Words']
+ * 'getHTMLText' => ['get', 'HTML', 'Text']
+ */
+List<String> getCamelWords(String str) {
+  if (str == null || str.isEmpty) {
+    return <String>[];
+  }
+  List<String> parts = <String>[];
+  bool wasLowerCase = false;
+  bool wasUpperCase = false;
+  int wordStart = 0;
+  for (int i = 0; i < str.length; i++) {
+    int c = str.codeUnitAt(i);
+    var newLowerCase = isLowerCase(c);
+    var newUpperCase = isUpperCase(c);
+    // myWord
+    // | ^
+    if (wasLowerCase && newUpperCase) {
+      parts.add(str.substring(wordStart, i));
+      wordStart = i;
+    }
+    // myHTMLText
+    //   |   ^
+    if (wasUpperCase &&
+        newUpperCase &&
+        i + 1 < str.length &&
+        isLowerCase(str.codeUnitAt(i + 1))) {
+      parts.add(str.substring(wordStart, i));
+      wordStart = i;
+    }
+    wasLowerCase = newLowerCase;
+    wasUpperCase = newUpperCase;
+  }
+  parts.add(str.substring(wordStart));
+  return parts;
+}
+
+/**
  * Checks if [str] is `null`, empty or is whitespace.
  */
 bool isBlank(String str) {