| /******************************************************************************* |
| * Copyright (c) 2005, 2009 Andrea Bittau, University College London, and others |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * Andrea Bittau - initial API and implementation from the PsychoPath XPath 2.0 |
| * Mukul Gandhi - bug274784 - improvements to xs:boolean data type implementation |
| * Jesper Steen Moeller - bug 285145 - implement full arity checking |
| *******************************************************************************/ |
| |
| package org.eclipse.wst.xml.xpath2.processor.internal.function; |
| |
| import java.util.Collection; |
| |
| import org.eclipse.wst.xml.xpath2.processor.DynamicError; |
| import org.eclipse.wst.xml.xpath2.processor.ResultSequence; |
| import org.eclipse.wst.xml.xpath2.processor.internal.types.CtrType; |
| import org.eclipse.wst.xml.xpath2.processor.internal.types.QName; |
| |
| /** |
| * Constructor class for functions. |
| */ |
| public class Constructor extends Function { |
| private CtrType _atomic_type; |
| |
| /** |
| * Constructor for Constructor class. |
| * |
| * @param aat |
| * input of any atomic type. |
| */ |
| public Constructor(CtrType aat) { |
| super(new QName(aat.type_name()), 1); |
| |
| _atomic_type = aat; |
| } |
| |
| // XXX IN GENRAL, I THIUNK WE NEED TO PULL SANITY CHECKING OUTSIDE! |
| // PLUS I AM NOT ATOMIZING/ETC ETC HERE!!! BAD CODE |
| // BUG XXX HACK DEATH |
| /** |
| * Evaluate arguments. |
| * |
| * @param args |
| * argument expressions. |
| * @throws DynamicError |
| * Dynamic error. |
| * @return Result of evaluation. |
| */ |
| @Override |
| public ResultSequence evaluate(Collection args) throws DynamicError { |
| assert args.size() >= min_arity() && args.size() <= max_arity(); |
| |
| // sanity checks |
| ResultSequence arg = (ResultSequence) args.iterator().next(); |
| |
| if (arg.size() > 1) |
| DynamicError.throw_type_error(); |
| |
| // do it |
| return _atomic_type.constructor(arg); |
| } |
| |
| } |