Fix for issue 4776

compiler/java/com/google/dart/compiler/parser/DartParser.java

Index: compiler/java/com/google/dart/compiler/parser/DartParser.java
===================================================================
--- compiler/java/com/google/dart/compiler/parser/DartParser.java	(revision 11473)
+++ compiler/java/com/google/dart/compiler/parser/DartParser.java	(working copy)
@@ -1465,7 +1465,7 @@
         reportError(position(), ParserErrorCode.ONLY_FACTORIES_CAN_REDIRECT);
       }
       modifiers = modifiers.makeRedirectedConstructor();
-      DartTypeNode redirectedTypeName = parseTypeAnnotation();
+      DartTypeNode redirectedTypeName = parseTypeAnnotationPossiblyFollowedByName();
       DartIdentifier redirectedConstructorName = null;
       if (optional(Token.PERIOD)) {
         redirectedConstructorName = parseIdentifier();
@@ -1649,7 +1649,7 @@
         reportError(position(), ParserErrorCode.ONLY_FACTORIES_CAN_REDIRECT);
       }
       modifiers = modifiers.makeRedirectedConstructor();
-      redirectedTypeName = parseTypeAnnotation();
+      redirectedTypeName = parseTypeAnnotationPossiblyFollowedByName();
       if (optional(Token.PERIOD)) {
         redirectedConstructorName = parseIdentifier();
       }
@@ -4911,6 +4911,32 @@
 
   /**
    * <pre>
+   * type
+   *     : qualified typeArguments? ('.' identifier)?
+   *     ;
+   * </pre>
+   */
+  private DartTypeNode parseTypeAnnotationPossiblyFollowedByName() {
+    beginTypeAnnotation();
+    boolean canBeFollowedByPeriod = true;
+    if (peek(Token.IDENTIFIER, Token.LT) || peek(Token.IDENTIFIER, Token.PERIOD, Token.IDENTIFIER, Token.LT)) {
+      canBeFollowedByPeriod = false;
+    }
+    return done(new DartTypeNode(parseQualified(canBeFollowedByPeriod), parseTypeArgumentsOpt()));
+  }
+
+  private boolean peek(Token... tokens) {
+    int index = 0;
+    for (Token token : tokens) {
+      if (peek(index++) != token) {
+        return false;
+      }
+    }
+    return true;
+  }
+
+  /**
+   * <pre>
    * typeArguments
    *     : '<' typeList '>'
    *     ;