await in frog: partial support for try-catch blocks

frog/minfrog

 #!/usr/bin/env node
 //  ********** Library dart:core **************
 //  ********** Natives dart:core **************
 /**
  * Generates a dynamic call stub for a function.
  * Our goal is to create a stub method like this on-the-fly:
  *   function($0, $1, capture) { return this($0, $1, true, capture); }
  *
  * This stub then replaces the dynamic one on Function, with one that is
  * specialized for that particular function, taking into account its default
@@ skipping 12969 matching lines @@
 World.prototype.resolveAll = function() {
   var $$list = this.libraries.getValues();
   for (var $$i = this.libraries.getValues().iterator$0(); $$i.hasNext$0(); ) {
     var lib = $$i.next$0();
     lib.resolve$0();
   }
 }
 World.prototype.get$resolveAll = function() {
   return this.resolveAll.bind(this);
 }
-World.prototype.generateCode = function(lib) {
+World.prototype.findMainMethod = function(lib) {
   var mainMembers = lib.topType.resolveMember('main');
   var main = null;
   if (mainMembers == null || $eq(mainMembers.get$members().get$length(), 0)) {
     this.fatal('no main method specified');
   }
   else if (mainMembers.get$members().get$length() > 1) {
     var $$list = mainMembers.get$members();
     for (var $$i = mainMembers.get$members().iterator$0(); $$i.hasNext$0(); ) {
       var m = $$i.next$0();
       main = m;
       this.error('more than one main member (using last?)', main.get$span());
     }
   }
   else {
     main = mainMembers.get$members().$index(0);
   }
+  return main;
+}
+World.prototype.generateCode = function(lib) {
   var codeWriter = new CodeWriter();
-  this.gen = new WorldGenerator(main, codeWriter);
+  this.gen = new WorldGenerator(this.findMainMethod(lib), codeWriter);
   this.gen.run();
   this.jsBytesWritten = codeWriter.get$text().get$length();
 }
 World.prototype._message = function(color, prefix, message, span, span1, span2, throwing) {
   if (this.messageHandler != null) {
     this.messageHandler(prefix, message, span);
     if (span1 != null) {
       this.messageHandler(prefix, message, span1);
     }
     if (span2 != null) {
@@ skipping 599 matching lines @@
   $globals._RED_COLOR = '\u001b[31m';
 }
 var const$1 = new EmptyQueueException()/*const EmptyQueueException()*/;
 var const$126 = new IllegalAccessException()/*const IllegalAccessException()*/;
 var const$127 = ImmutableList.ImmutableList$from$factory([])/*const []*/;
 var const$2 = new _DeletedKeySentinel()/*const _DeletedKeySentinel()*/;
 var const$7 = new NoMoreElementsException()/*const NoMoreElementsException()*/;
 var $globals = {};
 $static_init();
 main();