Frog shouldn't read libraries with --leg_only.

dart/frog/frog_options.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.
 
 /** General options used by the compiler. */
 FrogOptions options;
 
 /** Extracts options from command-line arguments. */
 void parseOptions(String homedir, List<String> args, FileSystem files) {
   assert(options == null);
   options = new FrogOptions(homedir, args, files);
 }
 
 // TODO(sigmund): make into a generic option parser...
 class FrogOptions {
   /** Location of corelib and other special dart libraries. */
   String libDir;
 
   /* The top-level dart script to compile. */
   String dartScript;
 
   /** Where to place the generated code. */
   String outfile;
 
   // TODO(dgrove): fix this. For now, either 'sdk' or 'dev'.
   final config = 'dev';
 
 
   // Options that modify behavior significantly
-  bool enableLeg = false;
   bool legOnly = false;
   bool enableAsserts = false;
   bool enableTypeChecks = false;
   bool warningsAsErrors = false;
   bool verifyImplements = false; // TODO(jimhug): Implement
   bool compileAll = false;
   bool forceDynamic = false;
   bool dietParse = false;
   bool compileOnly = false;
   bool inferTypes = false;
@@ skipping 35 matching lines @@
     bool ignoreUnrecognizedFlags = false;
     bool passedLibDir = false;
     childArgs = [];
 
     // Start from 2 to skip arguments representing the compiler command
     // (node/python followed by frogsh/frog.py).
     loop: for (int i = 2; i < args.length; i++) {
       var arg = args[i];
 
       switch (arg) {
+        case '--leg':

[ngeoffray, 2012/02/09 09:14:21]

Should we remove the other flags?

[ahe, 2012/02/09 10:05:33]

In a few days. Right now we have an open VM bug that uses these options.

         case '--enable_leg':
-          enableLeg = true;
-          break;
-
         case '--leg_only':
-          enableLeg = true;
           legOnly = true;
           break;
 
         case '--enable_asserts':
           enableAsserts = true;
           break;
 
         case '--enable_type_checks':
           enableTypeChecks = true;
           // This flag also enables asserts in VM
@@ skipping 89 matching lines @@
       // Try locally
       var temp = 'frog/lib';
       if (files.fileExists(temp)) {
         libDir = temp;
       } else {
         libDir = 'lib';
       }
     }
   }
 }