public final WaiprParser.invals_return invals() throws RecognitionException {
		WaiprParser.invals_return retval = new WaiprParser.invals_return();
		retval.start = input.LT(1);

		CommonTree root_0 = null;

		Token char_literal66=null;
		ParserRuleReturnScope inval65 =null;
		ParserRuleReturnScope inval67 =null;

		CommonTree char_literal66_tree=null;
		RewriteRuleTokenStream stream_17=new RewriteRuleTokenStream(adaptor,"token 17");
		RewriteRuleSubtreeStream stream_inval=new RewriteRuleSubtreeStream(adaptor,"rule inval");

		try {
			// Waipr.g:59:8: ( inval ( ',' inval )* -> ( inval )* )
			// Waipr.g:59:10: inval ( ',' inval )*
			{
			pushFollow(FOLLOW_inval_in_invals433);
			inval65=inval();
			state._fsp--;

			stream_inval.add(inval65.getTree());
			// Waipr.g:59:16: ( ',' inval )*
			loop16:
			while (true) {
				int alt16=2;
				int LA16_0 = input.LA(1);
				if ( (LA16_0==17) ) {
					alt16=1;
				}

				switch (alt16) {
				case 1 :
					// Waipr.g:59:17: ',' inval
					{
					char_literal66=(Token)match(input,17,FOLLOW_17_in_invals436);  
					stream_17.add(char_literal66);

					pushFollow(FOLLOW_inval_in_invals438);
					inval67=inval();
					state._fsp--;

					stream_inval.add(inval67.getTree());
					}
					break;

				default :
					break loop16;
				}
			}

			// AST REWRITE
			// elements: inval
			// token labels: 
			// rule labels: retval
			// token list labels: 
			// rule list labels: 
			// wildcard labels: 
			retval.tree = root_0;
			RewriteRuleSubtreeStream stream_retval=new RewriteRuleSubtreeStream(adaptor,"rule retval",retval!=null?retval.getTree():null);

			root_0 = (CommonTree)adaptor.nil();
			// 59:29: -> ( inval )*
			{
				// Waipr.g:59:32: ( inval )*
				while ( stream_inval.hasNext() ) {
					adaptor.addChild(root_0, stream_inval.nextTree());
				}
				stream_inval.reset();

			}


			retval.tree = root_0;

			}

			retval.stop = input.LT(-1);

			retval.tree = (CommonTree)adaptor.rulePostProcessing(root_0);
			adaptor.setTokenBoundaries(retval.tree, retval.start, retval.stop);

		}
		catch (RecognitionException re) {
			reportError(re);
			recover(input,re);
			retval.tree = (CommonTree)adaptor.errorNode(input, retval.start, input.LT(-1), re);
		}
		finally {
			// do for sure before leaving
		}
		return retval;
	}