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Stream based representation for XML infoset
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2005-2012 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* http://glassfish.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
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*/
package com.sun.xml.stream.buffer;
/**
* Base class for classes that processes {@link XMLStreamBuffer}
* and produces infoset in API-specific form.
*/
public abstract class AbstractProcessor extends AbstractCreatorProcessor {
protected static final int STATE_ILLEGAL = 0;
protected static final int STATE_DOCUMENT = 1;
protected static final int STATE_DOCUMENT_FRAGMENT = 2;
protected static final int STATE_ELEMENT_U_LN_QN = 3;
protected static final int STATE_ELEMENT_P_U_LN = 4;
protected static final int STATE_ELEMENT_U_LN = 5;
protected static final int STATE_ELEMENT_LN = 6;
protected static final int STATE_TEXT_AS_CHAR_ARRAY_SMALL = 7;
protected static final int STATE_TEXT_AS_CHAR_ARRAY_MEDIUM = 8;
protected static final int STATE_TEXT_AS_CHAR_ARRAY_COPY = 9;
protected static final int STATE_TEXT_AS_STRING = 10;
protected static final int STATE_TEXT_AS_OBJECT = 11;
protected static final int STATE_COMMENT_AS_CHAR_ARRAY_SMALL = 12;
protected static final int STATE_COMMENT_AS_CHAR_ARRAY_MEDIUM = 13;
protected static final int STATE_COMMENT_AS_CHAR_ARRAY_COPY = 14;
protected static final int STATE_COMMENT_AS_STRING = 15;
protected static final int STATE_PROCESSING_INSTRUCTION = 16;
protected static final int STATE_END = 17;
private static final int[] _eiiStateTable = new int[256];
protected static final int STATE_NAMESPACE_ATTRIBUTE = 1;
protected static final int STATE_NAMESPACE_ATTRIBUTE_P = 2;
protected static final int STATE_NAMESPACE_ATTRIBUTE_P_U = 3;
protected static final int STATE_NAMESPACE_ATTRIBUTE_U = 4;
private static final int[] _niiStateTable = new int[256];
protected static final int STATE_ATTRIBUTE_U_LN_QN = 1;
protected static final int STATE_ATTRIBUTE_P_U_LN = 2;
protected static final int STATE_ATTRIBUTE_U_LN = 3;
protected static final int STATE_ATTRIBUTE_LN = 4;
protected static final int STATE_ATTRIBUTE_U_LN_QN_OBJECT = 5;
protected static final int STATE_ATTRIBUTE_P_U_LN_OBJECT = 6;
protected static final int STATE_ATTRIBUTE_U_LN_OBJECT = 7;
protected static final int STATE_ATTRIBUTE_LN_OBJECT = 8;
private static final int[] _aiiStateTable = new int[256];
static {
/*
* Create a state table from information items and options.
* The swtich statement using such states will often generate a more
* efficient byte code representation that can be hotspotted using
* jump tables.
*/
_eiiStateTable[T_DOCUMENT] = STATE_DOCUMENT;
_eiiStateTable[T_DOCUMENT_FRAGMENT] = STATE_DOCUMENT_FRAGMENT;
_eiiStateTable[T_ELEMENT_U_LN_QN] = STATE_ELEMENT_U_LN_QN;
_eiiStateTable[T_ELEMENT_P_U_LN] = STATE_ELEMENT_P_U_LN;
_eiiStateTable[T_ELEMENT_U_LN] = STATE_ELEMENT_U_LN;
_eiiStateTable[T_ELEMENT_LN] = STATE_ELEMENT_LN;
_eiiStateTable[T_TEXT_AS_CHAR_ARRAY_SMALL] = STATE_TEXT_AS_CHAR_ARRAY_SMALL;
_eiiStateTable[T_TEXT_AS_CHAR_ARRAY_MEDIUM] = STATE_TEXT_AS_CHAR_ARRAY_MEDIUM;
_eiiStateTable[T_TEXT_AS_CHAR_ARRAY_COPY] = STATE_TEXT_AS_CHAR_ARRAY_COPY;
_eiiStateTable[T_TEXT_AS_STRING] = STATE_TEXT_AS_STRING;
_eiiStateTable[T_TEXT_AS_OBJECT] = STATE_TEXT_AS_OBJECT;
_eiiStateTable[T_COMMENT_AS_CHAR_ARRAY_SMALL] = STATE_COMMENT_AS_CHAR_ARRAY_SMALL;
_eiiStateTable[T_COMMENT_AS_CHAR_ARRAY_MEDIUM] = STATE_COMMENT_AS_CHAR_ARRAY_MEDIUM;
_eiiStateTable[T_COMMENT_AS_CHAR_ARRAY_COPY] = STATE_COMMENT_AS_CHAR_ARRAY_COPY;
_eiiStateTable[T_COMMENT_AS_STRING] = STATE_COMMENT_AS_STRING;
_eiiStateTable[T_PROCESSING_INSTRUCTION] = STATE_PROCESSING_INSTRUCTION;
_eiiStateTable[T_END] = STATE_END;
_niiStateTable[T_NAMESPACE_ATTRIBUTE] = STATE_NAMESPACE_ATTRIBUTE;
_niiStateTable[T_NAMESPACE_ATTRIBUTE_P] = STATE_NAMESPACE_ATTRIBUTE_P;
_niiStateTable[T_NAMESPACE_ATTRIBUTE_P_U] = STATE_NAMESPACE_ATTRIBUTE_P_U;
_niiStateTable[T_NAMESPACE_ATTRIBUTE_U] = STATE_NAMESPACE_ATTRIBUTE_U;
_aiiStateTable[T_ATTRIBUTE_U_LN_QN] = STATE_ATTRIBUTE_U_LN_QN;
_aiiStateTable[T_ATTRIBUTE_P_U_LN] = STATE_ATTRIBUTE_P_U_LN;
_aiiStateTable[T_ATTRIBUTE_U_LN] = STATE_ATTRIBUTE_U_LN;
_aiiStateTable[T_ATTRIBUTE_LN] = STATE_ATTRIBUTE_LN;
_aiiStateTable[T_ATTRIBUTE_U_LN_QN_OBJECT] = STATE_ATTRIBUTE_U_LN_QN_OBJECT;
_aiiStateTable[T_ATTRIBUTE_P_U_LN_OBJECT] = STATE_ATTRIBUTE_P_U_LN_OBJECT;
_aiiStateTable[T_ATTRIBUTE_U_LN_OBJECT] = STATE_ATTRIBUTE_U_LN_OBJECT;
_aiiStateTable[T_ATTRIBUTE_LN_OBJECT] = STATE_ATTRIBUTE_LN_OBJECT;
}
protected XMLStreamBuffer _buffer;
/**
* True if this processor should create a fragment of XML, without the start/end document markers.
*/
protected boolean _fragmentMode;
protected boolean _stringInterningFeature = false;
/**
* Number of remaining XML element trees that should be visible
* through this {@link AbstractProcessor}.
*/
protected int _treeCount;
/**
* @deprecated
* Use {@link #setBuffer(XMLStreamBuffer, boolean)}
*/
protected final void setBuffer(XMLStreamBuffer buffer) {
setBuffer(buffer,buffer.isFragment());
}
protected final void setBuffer(XMLStreamBuffer buffer, boolean fragmentMode) {
_buffer = buffer;
_fragmentMode = fragmentMode;
_currentStructureFragment = _buffer.getStructure();
_structure = _currentStructureFragment.getArray();
_structurePtr = _buffer.getStructurePtr();
_currentStructureStringFragment = _buffer.getStructureStrings();
_structureStrings = _currentStructureStringFragment.getArray();
_structureStringsPtr = _buffer.getStructureStringsPtr();
_currentContentCharactersBufferFragment = _buffer.getContentCharactersBuffer();
_contentCharactersBuffer = _currentContentCharactersBufferFragment.getArray();
_contentCharactersBufferPtr = _buffer.getContentCharactersBufferPtr();
_currentContentObjectFragment = _buffer.getContentObjects();
_contentObjects = _currentContentObjectFragment.getArray();
_contentObjectsPtr = _buffer.getContentObjectsPtr();
_stringInterningFeature = _buffer.hasInternedStrings();
_treeCount = _buffer.treeCount;
}
protected final int peekStructure() {
if (_structurePtr < _structure.length) {
return _structure[_structurePtr] & 255;
}
return readFromNextStructure(0);
}
protected final int readStructure() {
if (_structurePtr < _structure.length) {
return _structure[_structurePtr++] & 255;
}
return readFromNextStructure(1);
}
protected final int readEiiState() {
return _eiiStateTable[readStructure()];
}
protected static int getEIIState(int item) {
return _eiiStateTable[item];
}
protected static int getNIIState(int item) {
return _niiStateTable[item];
}
protected static int getAIIState(int item) {
return _aiiStateTable[item];
}
protected final int readStructure16() {
return (readStructure() << 8) | readStructure();
}
private int readFromNextStructure(int v) {
_structurePtr = v;
_currentStructureFragment = _currentStructureFragment.getNext();
_structure = _currentStructureFragment.getArray();
return _structure[0] & 255;
}
protected final String readStructureString() {
if (_structureStringsPtr < _structureStrings.length) {
return _structureStrings[_structureStringsPtr++];
}
_structureStringsPtr = 1;
_currentStructureStringFragment = _currentStructureStringFragment.getNext();
_structureStrings = _currentStructureStringFragment.getArray();
return _structureStrings[0];
}
protected final String readContentString() {
return (String)readContentObject();
}
protected final char[] readContentCharactersCopy() {
return (char[])readContentObject();
}
protected final int readContentCharactersBuffer(int length) {
if (_contentCharactersBufferPtr + length < _contentCharactersBuffer.length) {
final int start = _contentCharactersBufferPtr;
_contentCharactersBufferPtr += length;
return start;
}
_contentCharactersBufferPtr = length;
_currentContentCharactersBufferFragment = _currentContentCharactersBufferFragment.getNext();
_contentCharactersBuffer = _currentContentCharactersBufferFragment.getArray();
return 0;
}
protected final Object readContentObject() {
if (_contentObjectsPtr < _contentObjects.length) {
return _contentObjects[_contentObjectsPtr++];
}
_contentObjectsPtr = 1;
_currentContentObjectFragment = _currentContentObjectFragment.getNext();
_contentObjects = _currentContentObjectFragment.getArray();
return _contentObjects[0];
}
protected final StringBuilder _qNameBuffer = new StringBuilder();
protected final String getQName(String prefix, String localName) {
_qNameBuffer.append(prefix).append(':').append(localName);
final String qName = _qNameBuffer.toString();
_qNameBuffer.setLength(0);
return (_stringInterningFeature) ? qName.intern() : qName;
}
protected final String getPrefixFromQName(String qName) {
int pIndex = qName.indexOf(':');
if (_stringInterningFeature) {
return (pIndex != -1) ? qName.substring(0,pIndex).intern() : "";
} else {
return (pIndex != -1) ? qName.substring(0,pIndex) : "";
}
}
}
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