Add CodeBuffer.addAll method.

lib/compiler/implementation/code_buffer.dart

 // Copyright (c) 2012, 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.
 
 class CodeBuffer implements StringBuffer {
   StringBuffer buffer;
   List<SourceLocation> sourceLocations;
   int lastBufferOffset = 0;
 
   CodeBuffer()
       : buffer = new StringBuffer(),
         sourceLocations = new List<SourceLocation>();
 
-  int get length() {
-    return buffer.length;
-  }
+  int get length() => buffer.length;
 
   bool isEmpty() {
     return buffer.isEmpty();
   }
 
   /**
    * Converts [object] to a string and adds it to the buffer. If [object] is a
    * [CodeBuffer], adds its source locations to [sourceLocations].
    */
   CodeBuffer add(var object) {
@@ skipping 13 matching lines @@
                                              firstMapping.token,
                                              offsetDelta));
       for (int i = 1; i < other.sourceLocations.length; ++i) {
         sourceLocations.add(other.sourceLocations[i]);
       }
       lastBufferOffset = buffer.length + other.lastBufferOffset;
     }
     buffer.add(other.toString());
   }
 
+  CodeBuffer addAll(Collection<Object> objects) {
+    for (Object obj in objects) {
+      add(obj);
+    }
+    return this;
+  }
+
   CodeBuffer addCharCode(int charCode) {
     return add(new String.fromCharCodes([charCode]));
   }
 
   CodeBuffer clear() {
     buffer.clear();
     sourceLocations.clear();
     lastBufferOffset = 0;
     return this;
   }
@@ skipping 11 matching lines @@
   void forEachSourceLocation(void f(Element element, Token token, int offset)) {
     int offset = 0;
     sourceLocations.forEach((sourceLocation) {
       offset += sourceLocation.offsetDelta;
       f(sourceLocation.element, sourceLocation.token, offset);
     });
   }
 }
 
 class SourceLocation {
-  Element element;
-  Token token;
-  int offsetDelta;
+  final Element element;
+  final Token token;
+  final int offsetDelta;
   SourceLocation(this.element, this.token, this.offsetDelta);
 }