author | joehw |
Wed, 09 Mar 2016 16:09:55 -0800 | |
changeset 36486 | b84e564d2358 |
parent 33349 | 975138b77cff |
child 39909 | 00e4298ae168 |
permissions | -rw-r--r-- |
6 | 1 |
/* |
36486
b84e564d2358
8150704: XALAN: ERROR: 'No more DTM IDs are available' when transforming with lots of temporary result trees
joehw
parents:
33349
diff
changeset
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* Copyright (c) 2006, 2016, Oracle and/or its affiliates. All rights reserved. |
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*/ |
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/* |
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* Licensed to the Apache Software Foundation (ASF) under one or more |
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* contributor license agreements. See the NOTICE file distributed with |
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* this work for additional information regarding copyright ownership. |
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* The ASF licenses this file to You under the Apache License, Version 2.0 |
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* (the "License"); you may not use this file except in compliance with |
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* the License. You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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package com.sun.org.apache.xalan.internal.xsltc.compiler; |
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import com.sun.org.apache.bcel.internal.generic.ANEWARRAY; |
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import com.sun.org.apache.bcel.internal.generic.BasicType; |
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import com.sun.org.apache.bcel.internal.generic.CHECKCAST; |
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import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen; |
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import com.sun.org.apache.bcel.internal.generic.DUP_X1; |
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import com.sun.org.apache.bcel.internal.generic.GETFIELD; |
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import com.sun.org.apache.bcel.internal.generic.ICONST; |
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import com.sun.org.apache.bcel.internal.generic.INVOKEINTERFACE; |
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import com.sun.org.apache.bcel.internal.generic.INVOKESPECIAL; |
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import com.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL; |
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import com.sun.org.apache.bcel.internal.generic.InstructionList; |
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import com.sun.org.apache.bcel.internal.generic.NEW; |
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import com.sun.org.apache.bcel.internal.generic.NEWARRAY; |
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import com.sun.org.apache.bcel.internal.generic.PUSH; |
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33349 | 37 |
import com.sun.org.apache.xalan.internal.xsltc.DOM; |
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator; |
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ErrorMsg; |
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator; |
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type; |
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError; |
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import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Util; |
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33349 | 44 |
import java.util.ArrayList; |
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import java.util.HashMap; |
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import java.util.Iterator; |
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import java.util.List; |
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import java.util.Map; |
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import org.xml.sax.Attributes; |
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import org.xml.sax.helpers.AttributesImpl; |
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/** |
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* @author Jacek Ambroziak |
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* @author Santiago Pericas-Geertsen |
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* @author G. Todd Miller |
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* @author Morten Jorensen |
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* @author Erwin Bolwidt <ejb@klomp.org> |
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* @author John Howard <JohnH@schemasoft.com> |
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*/ |
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public abstract class SyntaxTreeNode implements Constants { |
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// Reference to the AST parser |
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private Parser _parser; |
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// AST navigation pointers |
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protected SyntaxTreeNode _parent; // Parent node |
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private Stylesheet _stylesheet; // Stylesheet ancestor node |
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private Template _template; // Template ancestor node |
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private final List<SyntaxTreeNode> _contents = new ArrayList<>(2); // Child nodes |
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// Element description data |
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protected QName _qname; // The element QName |
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private int _line; // Source file line number |
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protected AttributesImpl _attributes = null; // Attributes of this element |
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private Map<String, String> _prefixMapping = null; // Namespace declarations |
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// Sentinel - used to denote unrecognised syntaxt tree nodes. |
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protected static final SyntaxTreeNode Dummy = new AbsolutePathPattern(null); |
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// These two are used for indenting nodes in the AST (debug output) |
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protected static final int IndentIncrement = 4; |
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private static final char[] _spaces = |
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" ".toCharArray(); |
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/** |
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* Creates a new SyntaxTreeNode with a 'null' QName and no source file |
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* line number reference. |
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*/ |
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public SyntaxTreeNode() { |
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_line = 0; |
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_qname = null; |
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} |
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||
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/** |
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* Creates a new SyntaxTreeNode with a 'null' QName. |
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* @param line Source file line number reference |
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*/ |
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public SyntaxTreeNode(int line) { |
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_line = line; |
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_qname = null; |
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} |
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/** |
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* Creates a new SyntaxTreeNode with no source file line number reference. |
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* @param uri The element's namespace URI |
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* @param prefix The element's namespace prefix |
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* @param local The element's local name |
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*/ |
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public SyntaxTreeNode(String uri, String prefix, String local) { |
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_line = 0; |
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setQName(uri, prefix, local); |
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} |
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/** |
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* Set the source file line number for this element |
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* @param line The source file line number. |
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*/ |
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protected final void setLineNumber(int line) { |
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_line = line; |
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} |
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/** |
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* Get the source file line number for this element. If unavailable, lookup |
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* in ancestors. |
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* |
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* @return The source file line number. |
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*/ |
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public final int getLineNumber() { |
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if (_line > 0) return _line; |
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SyntaxTreeNode parent = getParent(); |
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return (parent != null) ? parent.getLineNumber() : 0; |
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} |
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/** |
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* Set the QName for the syntax tree node. |
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* @param qname The QName for the syntax tree node |
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*/ |
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protected void setQName(QName qname) { |
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_qname = qname; |
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} |
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/** |
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* Set the QName for the SyntaxTreeNode |
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* @param uri The element's namespace URI |
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* @param prefix The element's namespace prefix |
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* @param local The element's local name |
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*/ |
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protected void setQName(String uri, String prefix, String localname) { |
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_qname = new QName(uri, prefix, localname); |
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} |
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/** |
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* Set the QName for the SyntaxTreeNode |
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* @param qname The QName for the syntax tree node |
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*/ |
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protected QName getQName() { |
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return(_qname); |
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} |
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/** |
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* Set the attributes for this SyntaxTreeNode. |
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* @param attributes Attributes for the element. Must be passed in as an |
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* implementation of org.xml.sax.Attributes. |
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*/ |
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protected void setAttributes(AttributesImpl attributes) { |
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_attributes = attributes; |
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} |
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/** |
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* Returns a value for an attribute from the source element. |
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* @param qname The QName of the attribute to return. |
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* @return The value of the attribute of name 'qname'. |
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*/ |
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protected String getAttribute(String qname) { |
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if (_attributes == null) { |
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return EMPTYSTRING; |
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} |
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final String value = _attributes.getValue(qname); |
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return (value == null || value.equals(EMPTYSTRING)) ? |
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EMPTYSTRING : value; |
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} |
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protected String getAttribute(String prefix, String localName) { |
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return getAttribute(prefix + ':' + localName); |
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} |
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protected boolean hasAttribute(String qname) { |
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return (_attributes != null && _attributes.getValue(qname) != null); |
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} |
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protected void addAttribute(String qname, String value) { |
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int index = _attributes.getIndex(qname); |
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if (index != -1) { |
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_attributes.setAttribute(index, "", Util.getLocalName(qname), |
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qname, "CDATA", value); |
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} |
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else { |
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_attributes.addAttribute("", Util.getLocalName(qname), qname, |
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"CDATA", value); |
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} |
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} |
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/** |
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* Returns a list of all attributes declared for the element represented by |
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* this syntax tree node. |
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* @return Attributes for this syntax tree node |
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*/ |
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protected Attributes getAttributes() { |
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return(_attributes); |
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} |
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/** |
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* Sets the prefix mapping for the namespaces that were declared in this |
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* element. This does not include all prefix mappings in scope, so one |
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* may have to check ancestor elements to get all mappings that are in |
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* in scope. The prefixes must be passed in as a Map that maps |
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* namespace prefixes (String objects) to namespace URIs (also String). |
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* @param mapping The Map containing the mappings. |
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*/ |
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protected void setPrefixMapping(Map<String, String> mapping) { |
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_prefixMapping = mapping; |
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} |
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/** |
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* Returns a Map containing the prefix mappings that were declared |
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* for this element. This does not include all prefix mappings in scope, |
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* so one may have to check ancestor elements to get all mappings that are |
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* in in scope. |
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* @return Prefix mappings (for this element only). |
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*/ |
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protected Map<String, String> getPrefixMapping() { |
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return _prefixMapping; |
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} |
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/** |
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* Adds a single prefix mapping to this syntax tree node. |
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* @param prefix Namespace prefix. |
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* @param uri Namespace URI. |
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*/ |
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protected void addPrefixMapping(String prefix, String uri) { |
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if (_prefixMapping == null) |
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_prefixMapping = new HashMap<>(); |
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_prefixMapping.put(prefix, uri); |
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} |
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/** |
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* Returns any namespace URI that is in scope for a given prefix. This |
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* method checks namespace mappings for this element, and if necessary |
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* for ancestor elements as well (ie. if the prefix maps to an URI in this |
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* scope then you'll definately get the URI from this method). |
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* @param prefix Namespace prefix. |
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* @return Namespace URI. |
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*/ |
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protected String lookupNamespace(String prefix) { |
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// Initialise the output (default is 'null' for undefined) |
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String uri = null; |
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// First look up the prefix/uri mapping in our own map... |
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if (_prefixMapping != null) |
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uri = _prefixMapping.get(prefix); |
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// ... but if we can't find it there we ask our parent for the mapping |
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if ((uri == null) && (_parent != null)) { |
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uri = _parent.lookupNamespace(prefix); |
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if ((prefix == Constants.EMPTYSTRING) && (uri == null)) |
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uri = Constants.EMPTYSTRING; |
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} |
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// ... and then we return whatever URI we've got. |
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return(uri); |
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} |
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/** |
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* Returns any namespace prefix that is mapped to a prefix in the current |
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* scope. This method checks namespace mappings for this element, and if |
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* necessary for ancestor elements as well (ie. if the URI is declared |
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* within the current scope then you'll definately get the prefix from |
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* this method). Note that this is a very slow method and consequentially |
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* it should only be used strictly when needed. |
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* @param uri Namespace URI. |
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* @return Namespace prefix. |
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*/ |
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protected String lookupPrefix(String uri) { |
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// Initialise the output (default is 'null' for undefined) |
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String prefix = null; |
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33349 | 286 |
// First look up the prefix/uri mapping in our own map... |
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if ((_prefixMapping != null) && |
33349 | 288 |
(_prefixMapping.containsValue(uri))) { |
289 |
for (Map.Entry<String, String> entry : _prefixMapping.entrySet()) { |
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prefix = entry.getKey(); |
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String mapsTo = entry.getValue(); |
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if (mapsTo.equals(uri)) return(prefix); |
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} |
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} |
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// ... but if we can't find it there we ask our parent for the mapping |
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else if (_parent != null) { |
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prefix = _parent.lookupPrefix(uri); |
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if ((uri == Constants.EMPTYSTRING) && (prefix == null)) |
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prefix = Constants.EMPTYSTRING; |
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} |
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return(prefix); |
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} |
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/** |
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* Set this node's parser. The parser (the XSLT parser) gives this |
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* syntax tree node access to the symbol table and XPath parser. |
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* @param parser The XSLT parser. |
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*/ |
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protected void setParser(Parser parser) { |
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_parser = parser; |
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} |
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/** |
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* Returns this node's XSLT parser. |
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* @return The XSLT parser. |
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*/ |
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public final Parser getParser() { |
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return _parser; |
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} |
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/** |
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* Set this syntax tree node's parent node, if unset. For |
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* re-parenting just use <code>node._parent = newparent</code>. |
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* |
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* @param parent The parent node. |
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*/ |
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protected void setParent(SyntaxTreeNode parent) { |
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if (_parent == null) _parent = parent; |
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} |
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330 |
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/** |
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332 |
* Returns this syntax tree node's parent node. |
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* @return The parent syntax tree node. |
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*/ |
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protected final SyntaxTreeNode getParent() { |
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return _parent; |
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} |
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338 |
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339 |
/** |
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* Returns 'true' if this syntax tree node is the Sentinal node. |
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* @return 'true' if this syntax tree node is the Sentinal node. |
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*/ |
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343 |
protected final boolean isDummy() { |
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return this == Dummy; |
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} |
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346 |
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347 |
/** |
|
348 |
* Get the import precedence of this element. The import precedence equals |
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349 |
* the import precedence of the stylesheet in which this element occured. |
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* @return The import precedence of this syntax tree node. |
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351 |
*/ |
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352 |
protected int getImportPrecedence() { |
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Stylesheet stylesheet = getStylesheet(); |
|
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if (stylesheet == null) return Integer.MIN_VALUE; |
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return stylesheet.getImportPrecedence(); |
|
356 |
} |
|
357 |
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358 |
/** |
|
359 |
* Get the Stylesheet node that represents the <xsl:stylesheet/> element |
|
360 |
* that this node occured under. |
|
361 |
* @return The Stylesheet ancestor node of this node. |
|
362 |
*/ |
|
363 |
public Stylesheet getStylesheet() { |
|
364 |
if (_stylesheet == null) { |
|
365 |
SyntaxTreeNode parent = this; |
|
366 |
while (parent != null) { |
|
367 |
if (parent instanceof Stylesheet) |
|
368 |
return((Stylesheet)parent); |
|
369 |
parent = parent.getParent(); |
|
370 |
} |
|
371 |
_stylesheet = (Stylesheet)parent; |
|
372 |
} |
|
373 |
return(_stylesheet); |
|
374 |
} |
|
375 |
||
376 |
/** |
|
377 |
* Get the Template node that represents the <xsl:template/> element |
|
378 |
* that this node occured under. Note that this method will return 'null' |
|
379 |
* for nodes that represent top-level elements. |
|
380 |
* @return The Template ancestor node of this node or 'null'. |
|
381 |
*/ |
|
382 |
protected Template getTemplate() { |
|
383 |
if (_template == null) { |
|
384 |
SyntaxTreeNode parent = this; |
|
385 |
while ((parent != null) && (!(parent instanceof Template))) |
|
386 |
parent = parent.getParent(); |
|
387 |
_template = (Template)parent; |
|
388 |
} |
|
389 |
return(_template); |
|
390 |
} |
|
391 |
||
392 |
/** |
|
393 |
* Returns a reference to the XSLTC (XSLT compiler) in use. |
|
394 |
* @return XSLTC - XSLT compiler. |
|
395 |
*/ |
|
396 |
protected final XSLTC getXSLTC() { |
|
397 |
return _parser.getXSLTC(); |
|
398 |
} |
|
399 |
||
400 |
/** |
|
401 |
* Returns the XSLT parser's symbol table. |
|
402 |
* @return Symbol table. |
|
403 |
*/ |
|
404 |
protected final SymbolTable getSymbolTable() { |
|
405 |
return (_parser == null) ? null : _parser.getSymbolTable(); |
|
406 |
} |
|
407 |
||
408 |
/** |
|
409 |
* Parse the contents of this syntax tree nodes (child nodes, XPath |
|
410 |
* expressions, patterns and functions). The default behaviour is to parser |
|
411 |
* the syntax tree node's children (since there are no common expressions, |
|
412 |
* patterns, etc. that can be handled in this base class. |
|
413 |
* @param parser reference to the XSLT parser |
|
414 |
*/ |
|
415 |
public void parseContents(Parser parser) { |
|
416 |
parseChildren(parser); |
|
417 |
} |
|
418 |
||
419 |
/** |
|
420 |
* Parse all children of this syntax tree node. This method is normally |
|
421 |
* called by the parseContents() method. |
|
422 |
* @param parser reference to the XSLT parser |
|
423 |
*/ |
|
424 |
protected final void parseChildren(Parser parser) { |
|
425 |
||
33349 | 426 |
List<QName> locals = null; // only create when needed |
6 | 427 |
|
33349 | 428 |
for (SyntaxTreeNode child : _contents) { |
6 | 429 |
parser.getSymbolTable().setCurrentNode(child); |
430 |
child.parseContents(parser); |
|
431 |
// if variable or parameter, add it to scope |
|
432 |
final QName varOrParamName = updateScope(parser, child); |
|
433 |
if (varOrParamName != null) { |
|
434 |
if (locals == null) { |
|
33349 | 435 |
locals = new ArrayList<>(2); |
6 | 436 |
} |
33349 | 437 |
locals.add(varOrParamName); |
6 | 438 |
} |
439 |
} |
|
440 |
||
441 |
parser.getSymbolTable().setCurrentNode(this); |
|
442 |
||
443 |
// after the last element, remove any locals from scope |
|
444 |
if (locals != null) { |
|
33349 | 445 |
for (QName varOrParamName : locals) { |
446 |
parser.removeVariable(varOrParamName); |
|
6 | 447 |
} |
448 |
} |
|
449 |
} |
|
450 |
||
451 |
/** |
|
452 |
* Add a node to the current scope and return name of a variable or |
|
453 |
* parameter if the node represents a variable or a parameter. |
|
454 |
*/ |
|
455 |
protected QName updateScope(Parser parser, SyntaxTreeNode node) { |
|
456 |
if (node instanceof Variable) { |
|
457 |
final Variable var = (Variable)node; |
|
458 |
parser.addVariable(var); |
|
459 |
return var.getName(); |
|
460 |
} |
|
461 |
else if (node instanceof Param) { |
|
462 |
final Param param = (Param)node; |
|
463 |
parser.addParameter(param); |
|
464 |
return param.getName(); |
|
465 |
} |
|
466 |
else { |
|
467 |
return null; |
|
468 |
} |
|
469 |
} |
|
470 |
||
471 |
/** |
|
472 |
* Type check the children of this node. The type check phase may add |
|
473 |
* coercions (CastExpr) to the AST. |
|
474 |
* @param stable The compiler/parser's symbol table |
|
475 |
*/ |
|
476 |
public abstract Type typeCheck(SymbolTable stable) throws TypeCheckError; |
|
477 |
||
478 |
/** |
|
479 |
* Call typeCheck() on all child syntax tree nodes. |
|
480 |
* @param stable The compiler/parser's symbol table |
|
481 |
*/ |
|
482 |
protected Type typeCheckContents(SymbolTable stable) throws TypeCheckError { |
|
33349 | 483 |
for (SyntaxTreeNode item : _contents) { |
6 | 484 |
item.typeCheck(stable); |
485 |
} |
|
486 |
return Type.Void; |
|
487 |
} |
|
488 |
||
489 |
/** |
|
490 |
* Translate this abstract syntax tree node into JVM bytecodes. |
|
491 |
* @param classGen BCEL Java class generator |
|
492 |
* @param methodGen BCEL Java method generator |
|
493 |
*/ |
|
494 |
public abstract void translate(ClassGenerator classGen, |
|
495 |
MethodGenerator methodGen); |
|
496 |
||
497 |
/** |
|
498 |
* Call translate() on all child syntax tree nodes. |
|
499 |
* @param classGen BCEL Java class generator |
|
500 |
* @param methodGen BCEL Java method generator |
|
501 |
*/ |
|
502 |
protected void translateContents(ClassGenerator classGen, |
|
503 |
MethodGenerator methodGen) { |
|
504 |
// Call translate() on all child nodes |
|
505 |
final int n = elementCount(); |
|
12458 | 506 |
|
33349 | 507 |
for (SyntaxTreeNode item : _contents) { |
12458 | 508 |
methodGen.markChunkStart(); |
6 | 509 |
item.translate(classGen, methodGen); |
12458 | 510 |
methodGen.markChunkEnd(); |
6 | 511 |
} |
512 |
||
513 |
// After translation, unmap any registers for any variables/parameters |
|
514 |
// that were declared in this scope. Performing this unmapping in the |
|
515 |
// same AST scope as the declaration deals with the problems of |
|
516 |
// references falling out-of-scope inside the for-each element. |
|
517 |
// (the cause of which being 'lazy' register allocation for references) |
|
518 |
for (int i = 0; i < n; i++) { |
|
36486
b84e564d2358
8150704: XALAN: ERROR: 'No more DTM IDs are available' when transforming with lots of temporary result trees
joehw
parents:
33349
diff
changeset
|
519 |
if ( _contents.get(i) instanceof VariableBase) { |
33349 | 520 |
final VariableBase var = (VariableBase)_contents.get(i); |
36486
b84e564d2358
8150704: XALAN: ERROR: 'No more DTM IDs are available' when transforming with lots of temporary result trees
joehw
parents:
33349
diff
changeset
|
521 |
var.unmapRegister(classGen, methodGen); |
6 | 522 |
} |
523 |
} |
|
524 |
} |
|
525 |
||
526 |
/** |
|
527 |
* Return true if the node represents a simple RTF. |
|
528 |
* |
|
529 |
* A node is a simple RTF if all children only produce Text value. |
|
530 |
* |
|
531 |
* @param node A node |
|
532 |
* @return true if the node content can be considered as a simple RTF. |
|
533 |
*/ |
|
534 |
private boolean isSimpleRTF(SyntaxTreeNode node) { |
|
535 |
||
33349 | 536 |
List<SyntaxTreeNode> contents = node.getContents(); |
537 |
if (!contents.stream().noneMatch((item) -> (!isTextElement(item, false)))) { |
|
6 | 538 |
return false; |
539 |
} |
|
540 |
||
541 |
return true; |
|
542 |
} |
|
543 |
||
544 |
/** |
|
545 |
* Return true if the node represents an adaptive RTF. |
|
546 |
* |
|
547 |
* A node is an adaptive RTF if each children is a Text element |
|
548 |
* or it is <xsl:call-template> or <xsl:apply-templates>. |
|
549 |
* |
|
550 |
* @param node A node |
|
551 |
* @return true if the node content can be considered as an adaptive RTF. |
|
552 |
*/ |
|
553 |
private boolean isAdaptiveRTF(SyntaxTreeNode node) { |
|
554 |
||
33349 | 555 |
List<SyntaxTreeNode> contents = node.getContents(); |
556 |
for (SyntaxTreeNode item : contents) { |
|
6 | 557 |
if (!isTextElement(item, true)) |
558 |
return false; |
|
559 |
} |
|
560 |
||
561 |
return true; |
|
562 |
} |
|
563 |
||
564 |
/** |
|
565 |
* Return true if the node only produces Text content. |
|
566 |
* |
|
567 |
* A node is a Text element if it is Text, xsl:value-of, xsl:number, |
|
568 |
* or a combination of these nested in a control instruction (xsl:if or |
|
569 |
* xsl:choose). |
|
570 |
* |
|
571 |
* If the doExtendedCheck flag is true, xsl:call-template and xsl:apply-templates |
|
572 |
* are also considered as Text elements. |
|
573 |
* |
|
574 |
* @param node A node |
|
575 |
* @param doExtendedCheck If this flag is true, <xsl:call-template> and |
|
576 |
* <xsl:apply-templates> are also considered as Text elements. |
|
577 |
* |
|
578 |
* @return true if the node of Text type |
|
579 |
*/ |
|
580 |
private boolean isTextElement(SyntaxTreeNode node, boolean doExtendedCheck) { |
|
581 |
if (node instanceof ValueOf || node instanceof Number |
|
582 |
|| node instanceof Text) |
|
583 |
{ |
|
584 |
return true; |
|
585 |
} |
|
586 |
else if (node instanceof If) { |
|
587 |
return doExtendedCheck ? isAdaptiveRTF(node) : isSimpleRTF(node); |
|
588 |
} |
|
589 |
else if (node instanceof Choose) { |
|
33349 | 590 |
List<SyntaxTreeNode> contents = node.getContents(); |
591 |
for (SyntaxTreeNode item : contents) { |
|
6 | 592 |
if (item instanceof Text || |
593 |
((item instanceof When || item instanceof Otherwise) |
|
594 |
&& ((doExtendedCheck && isAdaptiveRTF(item)) |
|
595 |
|| (!doExtendedCheck && isSimpleRTF(item))))) |
|
596 |
continue; |
|
597 |
else |
|
598 |
return false; |
|
599 |
} |
|
600 |
return true; |
|
601 |
} |
|
602 |
else if (doExtendedCheck && |
|
603 |
(node instanceof CallTemplate |
|
604 |
|| node instanceof ApplyTemplates)) |
|
605 |
return true; |
|
606 |
else |
|
607 |
return false; |
|
608 |
} |
|
609 |
||
610 |
/** |
|
611 |
* Utility method used by parameters and variables to store result trees |
|
612 |
* @param classGen BCEL Java class generator |
|
613 |
* @param methodGen BCEL Java method generator |
|
614 |
*/ |
|
615 |
protected void compileResultTree(ClassGenerator classGen, |
|
616 |
MethodGenerator methodGen) |
|
617 |
{ |
|
618 |
final ConstantPoolGen cpg = classGen.getConstantPool(); |
|
619 |
final InstructionList il = methodGen.getInstructionList(); |
|
620 |
final Stylesheet stylesheet = classGen.getStylesheet(); |
|
621 |
||
622 |
boolean isSimple = isSimpleRTF(this); |
|
623 |
boolean isAdaptive = false; |
|
624 |
if (!isSimple) { |
|
625 |
isAdaptive = isAdaptiveRTF(this); |
|
626 |
} |
|
627 |
||
628 |
int rtfType = isSimple ? DOM.SIMPLE_RTF |
|
629 |
: (isAdaptive ? DOM.ADAPTIVE_RTF : DOM.TREE_RTF); |
|
630 |
||
631 |
// Save the current handler base on the stack |
|
632 |
il.append(methodGen.loadHandler()); |
|
633 |
||
634 |
final String DOM_CLASS = classGen.getDOMClass(); |
|
635 |
||
636 |
// Create new instance of DOM class (with RTF_INITIAL_SIZE nodes) |
|
637 |
//int index = cpg.addMethodref(DOM_IMPL, "<init>", "(I)V"); |
|
638 |
//il.append(new NEW(cpg.addClass(DOM_IMPL))); |
|
639 |
||
640 |
il.append(methodGen.loadDOM()); |
|
641 |
int index = cpg.addInterfaceMethodref(DOM_INTF, |
|
642 |
"getResultTreeFrag", |
|
643 |
"(IIZ)" + DOM_INTF_SIG); |
|
644 |
il.append(new PUSH(cpg, RTF_INITIAL_SIZE)); |
|
645 |
il.append(new PUSH(cpg, rtfType)); |
|
646 |
il.append(new PUSH(cpg, stylesheet.callsNodeset())); |
|
647 |
il.append(new INVOKEINTERFACE(index,4)); |
|
648 |
||
649 |
il.append(DUP); |
|
650 |
||
651 |
// Overwrite old handler with DOM handler |
|
652 |
index = cpg.addInterfaceMethodref(DOM_INTF, |
|
653 |
"getOutputDomBuilder", |
|
654 |
"()" + TRANSLET_OUTPUT_SIG); |
|
655 |
||
656 |
il.append(new INVOKEINTERFACE(index,1)); |
|
657 |
il.append(DUP); |
|
658 |
il.append(methodGen.storeHandler()); |
|
659 |
||
660 |
// Call startDocument on the new handler |
|
661 |
il.append(methodGen.startDocument()); |
|
662 |
||
663 |
// Instantiate result tree fragment |
|
664 |
translateContents(classGen, methodGen); |
|
665 |
||
666 |
// Call endDocument on the new handler |
|
667 |
il.append(methodGen.loadHandler()); |
|
668 |
il.append(methodGen.endDocument()); |
|
669 |
||
670 |
// Check if we need to wrap the DOMImpl object in a DOMAdapter object. |
|
671 |
// DOMAdapter is not needed if the RTF is a simple RTF and the nodeset() |
|
672 |
// function is not used. |
|
673 |
if (stylesheet.callsNodeset() |
|
674 |
&& !DOM_CLASS.equals(DOM_IMPL_CLASS)) { |
|
675 |
// new com.sun.org.apache.xalan.internal.xsltc.dom.DOMAdapter(DOMImpl,String[]); |
|
676 |
index = cpg.addMethodref(DOM_ADAPTER_CLASS, |
|
677 |
"<init>", |
|
678 |
"("+DOM_INTF_SIG+ |
|
679 |
"["+STRING_SIG+ |
|
680 |
"["+STRING_SIG+ |
|
681 |
"[I"+ |
|
682 |
"["+STRING_SIG+")V"); |
|
683 |
il.append(new NEW(cpg.addClass(DOM_ADAPTER_CLASS))); |
|
684 |
il.append(new DUP_X1()); |
|
685 |
il.append(SWAP); |
|
686 |
||
687 |
/* |
|
688 |
* Give the DOM adapter an empty type mapping if the nodeset |
|
689 |
* extension function is never called. |
|
690 |
*/ |
|
691 |
if (!stylesheet.callsNodeset()) { |
|
692 |
il.append(new ICONST(0)); |
|
693 |
il.append(new ANEWARRAY(cpg.addClass(STRING))); |
|
694 |
il.append(DUP); |
|
695 |
il.append(DUP); |
|
696 |
il.append(new ICONST(0)); |
|
697 |
il.append(new NEWARRAY(BasicType.INT)); |
|
698 |
il.append(SWAP); |
|
699 |
il.append(new INVOKESPECIAL(index)); |
|
700 |
} |
|
701 |
else { |
|
702 |
// Push name arrays on the stack |
|
703 |
il.append(ALOAD_0); |
|
704 |
il.append(new GETFIELD(cpg.addFieldref(TRANSLET_CLASS, |
|
705 |
NAMES_INDEX, |
|
706 |
NAMES_INDEX_SIG))); |
|
707 |
il.append(ALOAD_0); |
|
708 |
il.append(new GETFIELD(cpg.addFieldref(TRANSLET_CLASS, |
|
709 |
URIS_INDEX, |
|
710 |
URIS_INDEX_SIG))); |
|
711 |
il.append(ALOAD_0); |
|
712 |
il.append(new GETFIELD(cpg.addFieldref(TRANSLET_CLASS, |
|
713 |
TYPES_INDEX, |
|
714 |
TYPES_INDEX_SIG))); |
|
715 |
il.append(ALOAD_0); |
|
716 |
il.append(new GETFIELD(cpg.addFieldref(TRANSLET_CLASS, |
|
717 |
NAMESPACE_INDEX, |
|
718 |
NAMESPACE_INDEX_SIG))); |
|
719 |
||
720 |
// Initialized DOM adapter |
|
721 |
il.append(new INVOKESPECIAL(index)); |
|
722 |
||
723 |
// Add DOM adapter to MultiDOM class by calling addDOMAdapter() |
|
724 |
il.append(DUP); |
|
725 |
il.append(methodGen.loadDOM()); |
|
726 |
il.append(new CHECKCAST(cpg.addClass(classGen.getDOMClass()))); |
|
727 |
il.append(SWAP); |
|
728 |
index = cpg.addMethodref(MULTI_DOM_CLASS, |
|
729 |
"addDOMAdapter", |
|
730 |
"(" + DOM_ADAPTER_SIG + ")I"); |
|
731 |
il.append(new INVOKEVIRTUAL(index)); |
|
732 |
il.append(POP); // ignore mask returned by addDOMAdapter |
|
733 |
} |
|
734 |
} |
|
735 |
||
736 |
// Restore old handler base from stack |
|
737 |
il.append(SWAP); |
|
738 |
il.append(methodGen.storeHandler()); |
|
739 |
} |
|
740 |
||
741 |
/** |
|
742 |
* Returns true if this expression/instruction depends on the context. By |
|
743 |
* default, every expression/instruction depends on the context unless it |
|
744 |
* overrides this method. Currently used to determine if result trees are |
|
745 |
* compiled using procedures or little DOMs (result tree fragments). |
|
746 |
* @return 'true' if this node depends on the context. |
|
747 |
*/ |
|
748 |
protected boolean contextDependent() { |
|
749 |
return true; |
|
750 |
} |
|
751 |
||
752 |
/** |
|
753 |
* Return true if any of the expressions/instructions in the contents of |
|
754 |
* this node is context dependent. |
|
755 |
* @return 'true' if the contents of this node is context dependent. |
|
756 |
*/ |
|
757 |
protected boolean dependentContents() { |
|
33349 | 758 |
for (SyntaxTreeNode item : _contents) { |
6 | 759 |
if (item.contextDependent()) { |
760 |
return true; |
|
761 |
} |
|
762 |
} |
|
763 |
return false; |
|
764 |
} |
|
765 |
||
766 |
/** |
|
767 |
* Adds a child node to this syntax tree node. |
|
768 |
* @param element is the new child node. |
|
769 |
*/ |
|
770 |
protected final void addElement(SyntaxTreeNode element) { |
|
33349 | 771 |
_contents.add(element); |
6 | 772 |
element.setParent(this); |
773 |
} |
|
774 |
||
775 |
/** |
|
776 |
* Inserts the first child node of this syntax tree node. The existing |
|
777 |
* children are shifted back one position. |
|
778 |
* @param element is the new child node. |
|
779 |
*/ |
|
780 |
protected final void setFirstElement(SyntaxTreeNode element) { |
|
33349 | 781 |
_contents.add(0, element); |
6 | 782 |
element.setParent(this); |
783 |
} |
|
784 |
||
785 |
/** |
|
786 |
* Removed a child node of this syntax tree node. |
|
787 |
* @param element is the child node to remove. |
|
788 |
*/ |
|
789 |
protected final void removeElement(SyntaxTreeNode element) { |
|
790 |
_contents.remove(element); |
|
791 |
element.setParent(null); |
|
792 |
} |
|
793 |
||
794 |
/** |
|
33349 | 795 |
* Returns a List containing all the child nodes of this node. |
796 |
* @return A List containing all the child nodes of this node. |
|
6 | 797 |
*/ |
33349 | 798 |
protected final List<SyntaxTreeNode> getContents() { |
6 | 799 |
return _contents; |
800 |
} |
|
801 |
||
802 |
/** |
|
803 |
* Tells you if this node has any child nodes. |
|
804 |
* @return 'true' if this node has any children. |
|
805 |
*/ |
|
806 |
protected final boolean hasContents() { |
|
807 |
return elementCount() > 0; |
|
808 |
} |
|
809 |
||
810 |
/** |
|
811 |
* Returns the number of children this node has. |
|
812 |
* @return Number of child nodes. |
|
813 |
*/ |
|
814 |
protected final int elementCount() { |
|
815 |
return _contents.size(); |
|
816 |
} |
|
817 |
||
818 |
/** |
|
33349 | 819 |
* Returns an Iterator of all child nodes of this node. |
820 |
* @return An Iterator of all child nodes of this node. |
|
6 | 821 |
*/ |
33349 | 822 |
protected final Iterator<SyntaxTreeNode> elements() { |
823 |
return _contents.iterator(); |
|
6 | 824 |
} |
825 |
||
826 |
/** |
|
827 |
* Returns a child node at a given position. |
|
828 |
* @param pos The child node's position. |
|
829 |
* @return The child node. |
|
830 |
*/ |
|
831 |
protected final Object elementAt(int pos) { |
|
33349 | 832 |
return _contents.get(pos); |
6 | 833 |
} |
834 |
||
835 |
/** |
|
836 |
* Returns this element's last child |
|
837 |
* @return The child node. |
|
838 |
*/ |
|
839 |
protected final SyntaxTreeNode lastChild() { |
|
33349 | 840 |
if (_contents.isEmpty()) return null; |
841 |
return (SyntaxTreeNode)_contents.get(_contents.size() - 1); |
|
6 | 842 |
} |
843 |
||
844 |
/** |
|
845 |
* Displays the contents of this syntax tree node (to stdout). |
|
846 |
* This method is intended for debugging _only_, and should be overridden |
|
847 |
* by all syntax tree node implementations. |
|
848 |
* @param indent Indentation level for syntax tree levels. |
|
849 |
*/ |
|
850 |
public void display(int indent) { |
|
851 |
displayContents(indent); |
|
852 |
} |
|
853 |
||
854 |
/** |
|
855 |
* Displays the contents of this syntax tree node (to stdout). |
|
856 |
* This method is intended for debugging _only_ !!! |
|
857 |
* @param indent Indentation level for syntax tree levels. |
|
858 |
*/ |
|
859 |
protected void displayContents(int indent) { |
|
33349 | 860 |
for (SyntaxTreeNode item : _contents) { |
6 | 861 |
item.display(indent); |
862 |
} |
|
863 |
} |
|
864 |
||
865 |
/** |
|
866 |
* Set the indentation level for debug output. |
|
867 |
* @param indent Indentation level for syntax tree levels. |
|
868 |
*/ |
|
869 |
protected final void indent(int indent) { |
|
870 |
System.out.print(new String(_spaces, 0, indent)); |
|
871 |
} |
|
872 |
||
873 |
/** |
|
874 |
* Report an error to the parser. |
|
875 |
* @param element The element in which the error occured (normally 'this' |
|
876 |
* but it could also be an expression/pattern/etc.) |
|
877 |
* @param parser The XSLT parser to report the error to. |
|
878 |
* @param error The error code (from util/ErrorMsg). |
|
879 |
* @param message Any additional error message. |
|
880 |
*/ |
|
881 |
protected void reportError(SyntaxTreeNode element, Parser parser, |
|
882 |
String errorCode, String message) { |
|
883 |
final ErrorMsg error = new ErrorMsg(errorCode, message, element); |
|
884 |
parser.reportError(Constants.ERROR, error); |
|
885 |
} |
|
886 |
||
887 |
/** |
|
888 |
* Report a recoverable error to the parser. |
|
889 |
* @param element The element in which the error occured (normally 'this' |
|
890 |
* but it could also be an expression/pattern/etc.) |
|
891 |
* @param parser The XSLT parser to report the error to. |
|
892 |
* @param error The error code (from util/ErrorMsg). |
|
893 |
* @param message Any additional error message. |
|
894 |
*/ |
|
895 |
protected void reportWarning(SyntaxTreeNode element, Parser parser, |
|
896 |
String errorCode, String message) { |
|
897 |
final ErrorMsg error = new ErrorMsg(errorCode, message, element); |
|
898 |
parser.reportError(Constants.WARNING, error); |
|
899 |
} |
|
900 |
||
901 |
} |