Issue 6908. Fix parsing look for receiver.() in switch.

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

Index: compiler/java/com/google/dart/compiler/parser/DartParser.java
diff --git a/compiler/java/com/google/dart/compiler/parser/DartParser.java b/compiler/java/com/google/dart/compiler/parser/DartParser.java
index a79148c2fa09144518d66679bebd9128e61ff3b8..eabae9d84de725880df53cb3af19d6ec4c14542d 100644
--- a/compiler/java/com/google/dart/compiler/parser/DartParser.java
+++ b/compiler/java/com/google/dart/compiler/parser/DartParser.java
@@ -3842,6 +3842,21 @@ public class DartParser extends CompletionHooksParserBase {
             DartIdentifier error = doneWithoutConsuming(new DartIdentifier(""));
             return doneWithoutConsuming(new DartPropertyAccess(receiver, error));
         }
+        // receiver.() = missing name
+        if (peek(0) == Token.LPAREN) {
+          reportUnexpectedToken(position(), Token.IDENTIFIER, peek(0));
+          DartIdentifier name;
+          {
+            beginIdentifier();

[Brian Wilkerson, 2012/11/26 15:47:58]

nit: This would be cleaner code if it were not inside a block.

+            name = done(new DartSyntheticErrorIdentifier());
+          }
+          boolean save = setAllowFunctionExpression(true);
+          DartMethodInvocation expr = doneWithoutConsuming(new DartMethodInvocation(receiver,
+              false, name, parseArguments()));
+          setAllowFunctionExpression(save);
+          return expr;
+        }
+        // expect name
         DartIdentifier name = parseIdentifier();
         if (peek(0) == Token.LPAREN) {
           boolean save = setAllowFunctionExpression(true);