Move getCamelWords() to the strings.dart file.

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

 // Copyright (c) 2014, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library services.src.correction.strings;
 
 import 'dart:math';
 
 /**
  * "$"
@@ skipping 101 matching lines @@
   int n = min(a_length, b_length);
   for (int i = 1; i <= n; i++) {
     if (a.codeUnitAt(a_length - i) != b.codeUnitAt(b_length - i)) {
       return i - 1;
     }
   }
   return n;
 }
 
 /**
+ * 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) {
   if (str == null) {
     return true;
   }
   if (str.isEmpty) {
     return true;
   }
   return str.codeUnits.every(isSpace);
@@ skipping 74 matching lines @@
   }
   if (isEmpty(separator)) {
     return '';
   }
   int pos = str.lastIndexOf(separator);
   if (pos == -1) {
     return str;
   }
   return str.substring(pos + separator.length);
 }