Support for nested comments

frog/minfrog

 #!/usr/bin/env node
 //  ********** Library dart:core **************
 //  ********** Natives dart:core **************
 function $throw(e) {
   // If e is not a value, we can use V8's captureStackTrace utility method.
   // TODO(jmesserly): capture the stack trace on other JS engines.
   if (e && (typeof e == 'object') && Error.captureStackTrace) {
     // TODO(jmesserly): this will clobber the e.stack property
     Error.captureStackTrace(e, $throw);
   }
@@ skipping 6947 matching lines @@
       if (this._skipWhitespace) {
         return this.next();
       }
       else {
         return this._finishToken(64/*TokenKind.COMMENT*/);
       }
     }
   }
 }
 TokenizerBase.prototype.finishMultiLineComment = function() {
-  while (true) {
+  var nesting = 1;
+  do {
     var ch = this._nextChar();
     if (ch == 0) {
       return this._finishToken(67/*TokenKind.INCOMPLETE_COMMENT*/);
     }
     else if (ch == 42) {
       if (this._maybeEatChar(47)) {
-        if (this._skipWhitespace) {
-          return this.next();
-        }
-        else {
-          return this._finishToken(64/*TokenKind.COMMENT*/);
-        }
+        nesting--;
+      }
+    }
+    else if (ch == 47) {
+      if (this._maybeEatChar(42)) {
+        nesting++;
       }
     }
   }
-  return this._errorToken();
+  while (nesting > 0)
+  if (this._skipWhitespace) {
+    return this.next();
+  }
+  else {
+    return this._finishToken(64/*TokenKind.COMMENT*/);
+  }
 }
 TokenizerBase.prototype.eatDigits = function() {
   while (this._lang_index < this._text.length) {
     if (TokenizerHelpers.isDigit(this._text.charCodeAt(this._lang_index))) {
       this._lang_index++;
     }
     else {
       return;
     }
   }
@@ skipping 6794 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();