AST __t232 = _t; AST tmp40_AST_in = (AST)_t;
AST __t237 = _t; AST tmp43_AST_in = (AST)_t;
	public final void param(AST _t,		List vars	) throws RecognitionException, XPathException {				AST param_AST_in = (AST)_t;		AST varname = null;				AST __t230 = _t;		varname = _t==ASTNULL ? null :(AST)_t;		match(_t,VARIABLE_BINDING);		_t = _t.getFirstChild();							FunctionParameter var= new FunctionParameter(varname.getText());					vars.add(var);						{		if (_t==null) _t=ASTNULL;		switch ( _t.getType()) {		case LITERAL_as:		{			AST __t232 = _t;			AST tmp40_AST_in = (AST)_t;			match(_t,LITERAL_as);			_t = _t.getFirstChild();			SequenceType type= new SequenceType();			sequenceType(_t,type);			_t = _retTree;			_t = __t232;			_t = _t.getNextSibling();			var.type= type;			break;		}		case 3:		{			break;		}		default:		{			throw new NoViableAltException(_t);		}		}		}		_t = __t230;		_t = _t.getNextSibling();		_retTree = _t;	}