Implement cascaded calls.

lib/compiler/implementation/scanner/array_based_scanner.dart

 // Copyright (c) 2011, 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 ArrayBasedScanner<S> extends AbstractScanner<S> {
   int get charOffset() => byteOffset + extraCharOffset;
   final Token tokens;
   Token tail;
   int tokenStart;
   int byteOffset;
@@ skipping 12 matching lines @@
   }
 
   int advance() {
     int next = nextByte();
     return next;
   }
 
   int select(int choice, PrecedenceInfo yes, PrecedenceInfo no) {
     int next = advance();
     if (next === choice) {
-      appendPrecenceToken(yes);
+      appendPrecedenceToken(yes);
       return advance();
     } else {
-      appendPrecenceToken(no);
+      appendPrecedenceToken(no);
       return next;
     }
   }
 
-  void appendPrecenceToken(PrecedenceInfo info) {
+  void appendPrecedenceToken(PrecedenceInfo info) {
     tail.next = new Token(info, tokenStart);
     tail = tail.next;
   }
 
   void appendStringToken(PrecedenceInfo info, String value) {
     tail.next = new StringToken(info, value, tokenStart);
     tail = tail.next;
   }
 
   void appendKeywordToken(Keyword keyword) {
@@ skipping 110 matching lines @@
 
   void discardOpenLt() {
     while (!groupingStack.isEmpty() && groupingStack.head.kind === LT_TOKEN) {
       groupingStack = groupingStack.tail;
     }
   }
 
   // TODO(ahe): make class abstract instead of adding an abstract method.
   abstract peek();
 }