xmllist.java

java中比较著名的js引擎当属mozilla开源的rhino

                    // Replace the first one, and add the rest on the list.
                    XMLList list = (XMLList) xmlValue;

                    if (list.length() > 0)
                    {
                        xmlNode.replaceAll((XML)list.item(0));
                        replace(index, (XML)list.item(0));

                        for (int i = 1; i < list.length(); i++)
                        {
                            insert(index + i, (XML)list.item(i));
                        }
                    }
                }
            }
            else
            {
                addToList(xmlValue);
            }
        }
    }


    /**
     *
     * @param name
     */
    void deleteXMLProperty(XMLName name)
    {
        for (int i = 0; i < length(); i++)
        {
            XML xml = getXmlFromAnnotation(i);

            if (xml.tokenType() == XmlCursor.TokenType.START)
            {
                xml.deleteXMLProperty(name);
            }
        }
    }

    /**
     *
     * @param index
     */
    public void delete(int index)
    {
        if (index >= 0 && index < length())
        {
            XML xml = getXmlFromAnnotation(index);

            xml.remove();

            internalRemoveFromList(index);
        }
    }


    /**
     *
     * @return
     */
    public Object[] getIds()
    {
        Object enumObjs[];

        if (prototypeFlag)
        {
            enumObjs = new Object[0];
        }
        else
        {
            enumObjs = new Object[length()];

            for (int i = 0; i < enumObjs.length; i++)
            {
                enumObjs[i] = new Integer(i);
            }
        }

        return enumObjs;
    }

    /**
     *
     * @return
     */
    public Object[] getIdsForDebug()
    {
        return getIds();
    }


    // XMLList will remove will delete all items in the list (a set delete) this differs from the XMLList delete operator.
    void remove ()
    {
        int nLen = length();
        for (int i = nLen - 1; i >= 0; i--)
        {
            XML xml = getXmlFromAnnotation(i);
            if (xml != null)
            {
                xml.remove();
                internalRemoveFromList(i);
            }
        }
    }

    /**
     *
     * @param index
     * @return
     */
    XML item (int index)
    {
        return _annos != null
            ? getXmlFromAnnotation(index) : XML.createEmptyXML(lib);
    }


    /**
     *
     * @param name
     * @param value
     */
    private void setAttribute (XMLName xmlName, Object value)
    {
        for (int i = 0; i < length(); i++)
        {
            XML xml = getXmlFromAnnotation(i);
            xml.setAttribute(xmlName, value);
        }
    }


    /**
     *
     * @param toAdd
     */
    void addToList(Object toAdd)
    {
        if (toAdd instanceof Undefined)
        {
            // Missing argument do nothing...
            return;
        }

        if (toAdd instanceof XMLList)
        {
            XMLList xmlSrc = (XMLList)toAdd;
            for (int i = 0; i < xmlSrc.length(); i++)
            {
                _annos.add(((XML)xmlSrc.item(i)).getAnnotation());
            }
        }
        else if (toAdd instanceof XML)
        {
            _annos.add(((XML)(toAdd)).getAnnotation());
        }
        else if (toAdd instanceof XML.XScriptAnnotation)
        {
            _annos.add((XML.XScriptAnnotation)toAdd);
        }
    }

    //
    //
    // Methods from section 12.4.4 in the spec
    //
    //

    /**
     *
     * @param toAdd
     */
    XML addNamespace(Namespace ns)
    {
        if(length() == 1)
        {
            return getXmlFromAnnotation(0).addNamespace(ns);
        }
        else
        {
            throw ScriptRuntime.typeError("The addNamespace method works only on lists containing one item");
        }
    }

    /**
     *
     * @param xml
     * @return
     */
    XML appendChild(Object xml)
    {
        if (length() == 1)
        {
            return getXmlFromAnnotation(0).appendChild(xml);
        }
        else
        {
            throw ScriptRuntime.typeError("The appendChild method works only on lists containing one item");
        }
    }

    /**
     *
     * @param attr
     * @return
     */
    XMLList attribute(XMLName xmlName)
    {
        XMLList result = new XMLList(lib);

        for (int i = 0; i < length(); i++)
        {
            XML xml = getXmlFromAnnotation(i);
            result.addToList(xml.attribute(xmlName));
        }

        return result;
    }

    /**
     *
     * @return
     */
    XMLList attributes()
    {
        XMLList result = new XMLList(lib);

        for (int i = 0; i < length(); i++)
        {
            XML xml = getXmlFromAnnotation(i);
            result.addToList(xml.attributes());
        }

        return result;
    }

    XMLList child(long index)
    {
        XMLList result = new XMLList(lib);

        for (int i = 0; i < length(); i++)
        {
            result.addToList(getXmlFromAnnotation(i).child(index));
        }

        return result;
    }

    XMLList child(XMLName xmlName)
    {
        XMLList result = new XMLList(lib);

        for (int i = 0; i < length(); i++)
        {
            result.addToList(getXmlFromAnnotation(i).child(xmlName));
        }

        return result;
    }

    /**
     *
     * @return
     */
    int childIndex()
    {
        if (length() == 1)
        {
            return getXmlFromAnnotation(0).childIndex();
        }
        else
        {
            throw ScriptRuntime.typeError("The childIndex method works only on lists containing one item");
        }
    }

    /**
     *
     * @return
     */
    XMLList children()
    {
        Vector v = new Vector();

        for (int i = 0; i < length(); i++)
        {
            XML xml = getXmlFromAnnotation(i);

            if (xml != null)
            {
                Object o = xml.children();
                if (o instanceof XMLList)
                {
                    XMLList childList = (XMLList)o;

                    int cChildren = childList.length();
                    for (int j = 0; j < cChildren; j++)
                    {
                        v.addElement(childList.item(j));
                    }
                }
            }
        }

        XMLList allChildren = new XMLList(lib);
        int sz = v.size();

        for (int i = 0; i < sz; i++)
        {
            allChildren.addToList(v.get(i));
        }

        return allChildren;
    }

    /**
     *
     * @return
     */
    XMLList comments()
    {
        XMLList result = new XMLList(lib);

        for (int i = 0; i < length(); i++)
        {
            XML xml = getXmlFromAnnotation(i);

            result.addToList(xml.comments());
        }

        return result;
    }

    /**
     *
     * @param xml
     * @return
     */
    boolean contains(Object xml)
    {
        boolean result = false;

        for (int i = 0; i < length(); i++)
        {
            XML member = getXmlFromAnnotation(i);

            if (member.equivalentXml(xml))
            {
                result = true;
                break;
            }
        }

        return result;
    }

    /**
     *
     * @return
     */
    Object copy()
    {
        XMLList result = new XMLList(lib);

        for (int i = 0; i < length(); i++)
        {
            XML xml = getXmlFromAnnotation(i);
            result.addToList(xml.copy());
        }

        return result;
    }

    /**
     *
     * @return
     */
    XMLList descendants(XMLName xmlName)
    {
        XMLList result = new XMLList(lib);

        for (int i = 0; i < length(); i++)
        {
            XML xml = getXmlFromAnnotation(i);
            result.addToList(xml.descendants(xmlName));
        }

        return result;
    }

    /**
     *
     * @return
     */
    Object[] inScopeNamespaces()
    {
        if(length() == 1)
        {
            return getXmlFromAnnotation(0).inScopeNamespaces();
        }
        else
        {
            throw ScriptRuntime.typeError("The inScopeNamespaces method works only on lists containing one item");
        }
    }

    /**
     *
     * @param child
     * @param xml
     */
    XML insertChildAfter(Object child, Object xml)
    {
        if (length() == 1)
        {
            return getXmlFromAnnotation(0).insertChildAfter(child, xml);
        }
        else
        {
            throw ScriptRuntime.typeError("The insertChildAfter method works only on lists containing one item");
        }
    }

    /**
     *
     * @param child
     * @param xml
     */
    XML insertChildBefore(Object child, Object xml)
    {
        if (length() == 1)
        {
            return getXmlFromAnnotation(0).insertChildAfter(child, xml);
        }
        else
        {
            throw ScriptRuntime.typeError("The insertChildBefore method works only on lists containing one item");
        }
    }

    /**
     *
     * @return
     */
    boolean hasOwnProperty(XMLName xmlName)
    {
        boolean hasProperty = false;

        if (prototypeFlag)
        {
            String property = xmlName.localName();
            hasProperty = (0 != findPrototypeId(property));
        }
        else
        {
            hasProperty = (getPropertyList(xmlName).length() > 0);
        }

        return hasProperty;
    }

    /**
     *
     * @return
     */
    boolean hasComplexContent()
    {
        boolean complexContent;
        int length = length();

        if (length == 0)
        {
            complexContent = false;
        }
        else if (length == 1)
        {
            complexContent = getXmlFromAnnotation(0).hasComplexContent();
        }
        else
        {
            complexContent = false;

            for (int i = 0; i < length; i++)
            {
                XML nextElement = getXmlFromAnnotation(i);
                if (nextElement.tokenType() == XmlCursor.TokenType.START)
                {
                    complexContent = true;
                    break;
                }
            }
        }

        return complexContent;
    }

    /**
     *
     * @return
     */
    boolean hasSimpleContent()
    {
        boolean simpleContent;
        int length = length();

        if (length == 0)
        {
            simpleContent = true;
        }
        else if (length == 1)
        {
            simpleContent = getXmlFromAnnotation(0).hasSimpleContent();
        }
        else
        {
            simpleContent = true;

            for (int i = 0; i < length; i++)
            {
                XML nextElement = getXmlFromAnnotation(i);
                if (nextElement.tokenType() == XmlCursor.TokenType.START)
                {
                    simpleContent = false;
                    break;
                }
            }
        }

        return simpleContent;
    }

    /**
     *
     * @return
     */
    int length()
    {
        int result = 0;