/***
* ASM XML Adapter
* Copyright (c) 2004, Eugene Kuleshov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holders nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.objectweb.asm.xml;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.ClassWriter;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.Label;
import org.objectweb.asm.Type;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
/**
* A {@link org.xml.sax.ContentHandler ContentHandler} that transforms XML
* document into Java class file. This class can be feeded by any kind of SAX
* 2.0 event producers, e.g. XML parser, XSLT or XPath engines, or custom code.
*
* @see org.objectweb.asm.xml.SAXClassAdapter
* @see org.objectweb.asm.xml.Processor
*
* @author Eugene Kuleshov
*/
public class ASMContentHandler extends DefaultHandler implements Opcodes {
/**
* Stack of the intermediate processing contexts.
*/
private List stack = new ArrayList();
/**
* Complete name of the current element.
*/
private String match = "";
/**
* <tt>true</tt> if the maximum stack size and number of local variables
* must be automatically computed.
*/
protected boolean computeMax;
/**
* Output stream to write result bytecode.
*/
protected OutputStream os;
/**
* Current instance of the {@link ClassWriter ClassWriter} used to write
* class bytecode.
*/
protected ClassWriter cw;
/**
* Map of the active {@link Label Label} instances for current method.
*/
protected Map labels;
private static final String BASE = "class";
private final RuleSet RULES = new RuleSet();
{
RULES.add(BASE, new ClassRule());
RULES.add(BASE + "/interfaces/interface", new InterfaceRule());
RULES.add(BASE + "/interfaces", new InterfacesRule());
RULES.add(BASE + "/outerclass", new OuterClassRule());
RULES.add(BASE + "/innerclass", new InnerClassRule());
RULES.add(BASE + "/source", new SourceRule());
RULES.add(BASE + "/field", new FieldRule());
RULES.add(BASE + "/method", new MethodRule());
RULES.add(BASE + "/method/exceptions/exception", new ExceptionRule());
RULES.add(BASE + "/method/exceptions", new ExceptionsRule());
RULES.add(BASE + "/method/annotationDefault",
new AnnotationDefaultRule());
RULES.add(BASE + "/method/code/*", new OpcodesRule()); // opcodes
RULES.add(BASE + "/method/code/TABLESWITCH", new TableSwitchRule());
RULES.add(BASE + "/method/code/TABLESWITCH/label",
new TableSwitchLabelRule());
RULES.add(BASE + "/method/code/LOOKUPSWITCH", new LookupSwitchRule());
RULES.add(BASE + "/method/code/LOOKUPSWITCH/label",
new LookupSwitchLabelRule());
RULES.add(BASE + "/method/code/Label", new LabelRule());
RULES.add(BASE + "/method/code/TryCatch", new TryCatchRule());
RULES.add(BASE + "/method/code/LineNumber", new LineNumberRule());
RULES.add(BASE + "/method/code/LocalVar", new LocalVarRule());
RULES.add(BASE + "/method/code/Max", new MaxRule());
RULES.add("*/annotation", new AnnotationRule());
RULES.add("*/parameterAnnotation", new AnnotationParameterRule());
RULES.add("*/annotationValue", new AnnotationValueRule());
RULES.add("*/annotationValueAnnotation",
new AnnotationValueAnnotationRule());
RULES.add("*/annotationValueEnum", new AnnotationValueEnumRule());
RULES.add("*/annotationValueArray", new AnnotationValueArrayRule());
}
private static interface OpcodeGroup {
public static final int INSN = 0;
public static final int INSN_INT = 1;
public static final int INSN_VAR = 2;
public static final int INSN_TYPE = 3;
public static final int INSN_FIELD = 4;
public static final int INSN_METHOD = 5;
public static final int INSN_JUMP = 6;
public static final int INSN_LDC = 7;
public static final int INSN_IINC = 8;
public static final int INSN_MULTIANEWARRAY = 9;
}
/**
* Map of the opcode names to opcode and opcode group
*/
static final Map OPCODES = new HashMap();
static {
OPCODES.put("NOP", new Opcode(NOP, OpcodeGroup.INSN));
OPCODES.put("ACONST_NULL", new Opcode(ACONST_NULL, OpcodeGroup.INSN));
OPCODES.put("ICONST_M1", new Opcode(ICONST_M1, OpcodeGroup.INSN));
OPCODES.put("ICONST_0", new Opcode(ICONST_0, OpcodeGroup.INSN));
OPCODES.put("ICONST_1", new Opcode(ICONST_1, OpcodeGroup.INSN));
OPCODES.put("ICONST_2", new Opcode(ICONST_2, OpcodeGroup.INSN));
OPCODES.put("ICONST_3", new Opcode(ICONST_3, OpcodeGroup.INSN));
OPCODES.put("ICONST_4", new Opcode(ICONST_4, OpcodeGroup.INSN));
OPCODES.put("ICONST_5", new Opcode(ICONST_5, OpcodeGroup.INSN));
OPCODES.put("LCONST_0", new Opcode(LCONST_0, OpcodeGroup.INSN));
OPCODES.put("LCONST_1", new Opcode(LCONST_1, OpcodeGroup.INSN));
OPCODES.put("FCONST_0", new Opcode(FCONST_0, OpcodeGroup.INSN));
OPCODES.put("FCONST_1", new Opcode(FCONST_1, OpcodeGroup.INSN));
OPCODES.put("FCONST_2", new Opcode(FCONST_2, OpcodeGroup.INSN));
OPCODES.put("DCONST_0", new Opcode(DCONST_0, OpcodeGroup.INSN));
OPCODES.put("DCONST_1", new Opcode(DCONST_1, OpcodeGroup.INSN));
OPCODES.put("BIPUSH", new Opcode(BIPUSH, OpcodeGroup.INSN_INT));
OPCODES.put("SIPUSH", new Opcode(SIPUSH, OpcodeGroup.INSN_INT));
OPCODES.put("LDC", new Opcode(LDC, OpcodeGroup.INSN_LDC));
OPCODES.put("ILOAD", new Opcode(ILOAD, OpcodeGroup.INSN_VAR));
OPCODES.put("LLOAD", new Opcode(LLOAD, OpcodeGroup.INSN_VAR));
OPCODES.put("FLOAD", new Opcode(FLOAD, OpcodeGroup.INSN_VAR));
OPCODES.put("DLOAD", new Opcode(DLOAD, OpcodeGroup.INSN_VAR));
OPCODES.put("ALOAD", new Opcode(ALOAD, OpcodeGroup.INSN_VAR));
OPCODES.put("IALOAD", new Opcode(IALOAD, OpcodeGroup.INSN));
OPCODES.put("LALOAD", new Opcode(LALOAD, OpcodeGroup.INSN));
OPCODES.put("FALOAD", new Opcode(FALOAD, OpcodeGroup.INSN));
OPCODES.put("DALOAD", new Opcode(DALOAD, OpcodeGroup.INSN));
OPCODES.put("AALOAD", new Opcode(AALOAD, OpcodeGroup.INSN));
OPCODES.put("BALOAD", new Opcode(BALOAD, OpcodeGroup.INSN));
OPCODES.put("CALOAD", new Opcode(CALOAD, OpcodeGroup.INSN));
OPCODES.put("SALOAD", new Opcode(SALOAD, OpcodeGroup.INSN));
OPCODES.put("ISTORE", new Opcode(ISTORE, OpcodeGroup.INSN_VAR));
OPCODES.put("LSTORE", new Opcode(LSTORE, OpcodeGroup.INSN_VAR));
OPCODES.put("FSTORE", new Opcode(FSTORE, OpcodeGroup.INSN_VAR));
OPCODES.put("DSTORE", new Opcode(DSTORE, OpcodeGroup.INSN_VAR));
OPCODES.put("ASTORE", new Opcode(ASTORE, OpcodeGroup.INSN_VAR));
OPCODES.put("IASTORE", new Opcode(IASTORE, OpcodeGroup.INSN));
OPCODES.put("LASTORE", new Opcode(LASTORE, OpcodeGroup.INSN));
OPCODES.put("FASTORE", new Opcode(FASTORE, OpcodeGroup.INSN));
OPCODES.put("DASTORE", new Opcode(DASTORE, OpcodeGroup.INSN));
OPCODES.put("AASTORE", new Opcode(AASTORE, OpcodeGroup.INSN));
OPCODES.put("BASTORE", new Opcode(BASTORE, OpcodeGroup.INSN));
OPCODES.put("CASTORE", new Opcode(CASTORE, OpcodeGroup.INSN));
OPCODES.put("SASTORE", new Opcode(SASTORE, OpcodeGroup.INSN));
OPCODES.put("POP", new Opcode(POP, OpcodeGroup.INSN));
OPCODES.put("POP2", new Opcode(POP2, OpcodeGroup.INSN));
OPCODES.put("DUP", new Opcode(DUP, OpcodeGroup.INSN));
OPCODES.put("DUP_X1", new Opcode(DUP_X1, OpcodeGroup.INSN));
OPCODES.put("DUP_X2", new Opcode(DUP_X2, OpcodeGroup.INSN));
OPCODES.put("DUP2", new Opcode(DUP2, OpcodeGroup.INSN));
OPCODES.put("DUP2_X1", new Opcode(DUP2_X1, OpcodeGroup.INSN));
OPCODES.put("DUP2_X2", new Opcode(DUP2_X2, OpcodeGroup.INSN));
OPCODES.put("SWAP", new Opcode(SWAP, OpcodeGroup.INSN));
OPCODES.put("IADD", new Opcode(IADD, OpcodeGroup.INSN));
OPCODES.put("LADD", new Opcode(LADD, OpcodeGroup.INSN));
OPCODES.put("FADD", new Opcode(FADD, OpcodeGroup.INSN));
OPCODES.put("DADD", new Opcode(DADD, OpcodeGroup.INSN));
OPCODES.put("ISUB", new Opcode(ISUB, OpcodeGroup.INSN));
OPCODES.put("LSUB", new Opcode(LSUB, OpcodeGroup.INSN));
OPCODES.put("FSUB", new Opcode(FSUB, OpcodeGroup.INSN));
OPCODES.put("DSUB", new Opcode(DSUB, OpcodeGroup.INSN));
OPCODES.put("IMUL", new Opcode(IMUL, OpcodeGroup.INSN));
OPCODES.put("LMUL", new Opcode(LMUL, OpcodeGroup.INSN));
OPCODES.put("FMUL", new Opcode(FMUL, OpcodeGroup.INSN));
OPCODES.put("DMUL", new Opcode(DMUL, OpcodeGroup.INSN));
OPCODES.put("IDIV", new Opcode(IDIV, OpcodeGroup.INSN));
OPCODES.put("LDIV", new Opcode(LDIV, OpcodeGroup.INSN));
OPCODES.put("FDIV", new Opcode(FDIV, OpcodeGroup.INSN));
OPCODES.put("DDIV", new Opcode(DDIV, OpcodeGroup.INSN));
OPCODES.put("IREM", new Opcode(IREM, OpcodeGroup.INSN));
OPCODES.put("LREM", new Opcode(LREM, OpcodeGroup.INSN));
OPCODES.put("FREM", new Opcode(FREM, OpcodeGroup.INSN));
OPCODES.put("DREM", new Opcode(DREM, OpcodeGroup.INSN));
OPCODES.put("INEG", new Opcode(INEG, OpcodeGroup.INSN));
OPCODES.put("LNEG", new Opcode(LNEG, OpcodeGroup.INSN));
OPCODES.put("FNEG", new Opcode(FNEG, OpcodeGroup.INSN));
OPCODES.put("DNEG", new Opcode(DNEG, OpcodeGroup.INSN));
OPCODES.put("ISHL", new Opcode(ISHL, OpcodeGroup.INSN));
OPCODES.put("LSHL", new Opcode(LSHL, OpcodeGroup.INSN));
OPCODES.put("ISHR", new Opcode(ISHR, OpcodeGroup.INSN));
OPCODES.put("LSHR", new Opcode(LSHR, OpcodeGroup.INSN));
OPCODES.put("IUSHR", new Opcode(IUSHR, OpcodeGroup.INSN));
OPCODES.put("LUSHR", new Opcode(LUSHR, OpcodeGroup.INSN));
OPCODES.put("IAND", new Opcode(IAND, OpcodeGroup.INSN));
OPCODES.put("LAND", new Opcode(LAND, OpcodeGroup.INSN));
OPCODES.put("IOR", new Opcode(IOR, OpcodeGroup.INSN));
OPCODES.put("LOR", new Opcode(LOR, OpcodeGroup.INSN));
OPCODES.put("IXOR", new Opcode(IXOR, OpcodeGroup.INSN));
OPCODES.put("LXOR", new Opcode(LXOR, OpcodeGroup.INSN));
OPCODES.put("IINC", new Opcode(IINC, OpcodeGroup.INSN_IINC));
OPCODES.put("I2L", new Opcode(I2L, OpcodeGroup.INSN));
OPCODES.put("I2F", new Opcode(I2F, OpcodeGroup.INSN));
OPCODES.put("I2D", new Opcode(I2D, OpcodeGroup.INSN));
OPCODES.put("L2I", new Opcode(L2I, OpcodeGroup.INSN));
OPCODES.put("L2F", new Opcode(L2F, OpcodeGroup.INSN));
OPCODES.put("L2D", new Opcode(L2D, OpcodeGroup.INSN));
OPCODES.put("F2I", new Opcode(F2I, OpcodeGroup.INSN));
OPCODES.put("F2L", new Opcode(F2L, OpcodeGroup.INSN));
OPCODES.put("F2D", new Opcode(F2D, OpcodeGroup.INSN));
OPCODES.put("D2I", new Opcode(D2I, OpcodeGroup.INSN));
OPCODES.put("D2L", new Opcode(D2L, OpcodeGroup.INSN));
OPCODES.put("D2F", new Opcode(D2F, OpcodeGroup.INSN));
OPCODES.put("I2B", new Opcode(I2B, OpcodeGroup.INSN));
OPCODES.put("I2C", new Opcode(I2C, OpcodeGroup.INSN));
OPCODES.put("I2S", new Opcode(I2S, OpcodeGroup.INSN));
OPCODES.put("LCMP", new Opcode(LCMP, OpcodeGroup.INSN));
OPCODES.put("FCMPL", new Opcode(FCMPL, OpcodeGroup.INSN));
OPCODES.put("FCMPG", new Opcode(FCMPG, OpcodeGroup.INSN));
OPCODES.put("DCMPL", new Opcode(DCMPL, OpcodeGroup.INSN));
OPCODES.put("DCMPG", new Opcode(DCMPG, OpcodeGroup.INSN));
OPCODES.put("IFEQ", new Opcode(IFEQ, OpcodeGroup.INSN_JUMP));
OPCODES.put("IFNE", new Opcode(IFNE, OpcodeGroup.INSN_JUMP));
OPCODES.put("IFLT", new Opcode(IFLT, OpcodeGroup.INSN_JUMP));
OPCODES.put("IFGE", new Opcode(IFGE, OpcodeGroup.INSN_JUMP));
OPCODES.put("IFGT", new Opcode(IFGT, OpcodeGroup.INSN_JUMP));
OPCODES.put("IFLE", new Opcode(IFLE, OpcodeGroup.INSN_JUMP));
OPCODES.put("IF_ICMPEQ", new Opcode(IF_ICMPEQ, OpcodeGroup.INSN_JUMP));
OPCODES.put("IF_ICMPNE", new Opcode(IF_ICMPNE, OpcodeGroup.INSN_JUMP));
OPCODES.put("IF_ICMPLT", new Opcode(IF_ICMPLT, OpcodeGroup.INSN_JUMP));
OPCODES.put("IF_ICMPGE", new Opcode(IF_ICMPGE, OpcodeGroup.INSN_JUMP));
OPCODES.put("IF_ICMPGT", new Opcode(IF_ICMPGT, OpcodeGroup.INSN_JUMP));
OPCODES.put("IF_ICMPLE", new Opcode(IF_ICMPLE, OpcodeGroup.INSN_JUMP));
OPCODES.put("IF_ACMPEQ", new Opcode(IF_ACMPEQ, OpcodeGroup.INSN_JUMP));
OPCODES.put("IF_ACMPNE", new Opcode(IF_ACMPNE, OpcodeGroup.INSN_JUMP));
OPCODES.put("GOTO", new Opcode(GOTO, OpcodeGroup.INSN_JUMP));
OPCODES.put("JSR", new Opcode(JSR, OpcodeGroup.INSN_JUMP));
OPCODES.put("RET", new Opcode(RET, OpcodeGroup.INSN_VAR));
// OPCODES.put( "TABLESWITCH", new Opcode( TABLESWITCH,
// "visiTableSwitchInsn"));
// OPCODES.put( "LOOKUPSWITCH", new Opcode( LOOKUPSWITCH,
// "visitLookupSwitch"));
OPCODES.put("IRETURN", new Opcode(IRETURN, OpcodeGroup.INSN));
OPCODES.put("LRETURN", new Opcode(LRETURN, OpcodeGroup.INSN));
OPCODES.put("FRETURN", new Opcode(FRETURN, OpcodeGroup.INSN));
OPCODES.put("DRETURN", new Opcode(DRETURN, OpcodeGroup.INSN));
OPCODES.put("ARETURN", new Opcode(ARETURN, OpcodeGroup.INSN));
OPCODES.put("RETURN", new Opcode(RETURN, OpcodeGroup.INSN));
OPCODES.put("GETSTATIC", new Opcode(GETSTATIC, OpcodeGroup.INSN_FIELD));
OPCODES.put("PUTSTATIC", new Opcode(PUTSTATIC, OpcodeGroup.INSN_FIELD));
OPCODES.put("GETFIELD", new Opcode(GETFIELD, OpcodeGroup.INSN_FIELD));
OPCODES.put("PUTFIELD", new Opcode(PUTFIELD, OpcodeGroup.INSN_FIELD));
OPCODES.put("INVOKEVIRTUAL", new Opcode(INVOKEVIRTUAL,
OpcodeGroup.INSN_METHOD));
OPCODES.put("INVOKESPECIAL", new Opcode(INVOKESPECIAL,
OpcodeGroup.INSN_METHOD));
OPCODES.put("INVOKESTATIC", new Opcode(INVOKESTATIC,
OpcodeGroup.INSN_METHOD));
OPCODES.put("INVOKEINTERFACE", new Opcode(INVOKEINTERFACE,
OpcodeGroup.INSN_METHOD));
OPCODES.put("NEW", new Opcode(NEW, OpcodeGroup.INSN_TYPE));
OPCODES.put("NEWARRAY", new Opcode(NEWARRAY, OpcodeGroup.INSN_INT));
OPCODES.put("ANEWARRAY", new Opcode(ANEWARRAY, OpcodeGroup.INSN_TYPE));
OPCODES.put("ARRAYLENGTH", new Opcode(ARRAYLENGTH, OpcodeGroup.INSN));
OPCODES.put("ATHROW", new Opcode(ATHROW, OpcodeGroup.INSN));
OPCODES.put("CHECKCAST", new Opcode(CHECKCAST, OpcodeGroup.INSN_TYPE));
OPCODES.put("INSTANCEOF", new Opcode(INSTANCEOF, OpcodeGroup.INSN_TYPE));
OPCODES.put("MONITORENTER", new Opcode(MONITORENTER, OpcodeGroup.INSN));
OPCODES.put("MONITOREXIT", new Opcode(MONITOREXIT, OpcodeGroup.INSN));
OPCODES.put("MULTIANEWARRAY", new Opcode(MULTIANEWARRAY,
OpcodeGroup.INSN_MULTIANEWARRAY));
OPCODES.put("IFNULL", new Opcode(IFNULL, OpcodeGroup.INSN_JUMP));
OPCODES.put("IFNONNULL", new Opcode(IFNONNULL, OpcodeGroup.INSN_JUMP));
}
/**
* Constructs a new {@link ASMContentHandler ASMContentHandler} object.
*
* @param os output stream to write generated class.
* @param computeMax <tt>true</tt> if the maximum stack size and the
* maximum number of local variables must be automatically computed.
* This value is passed to {@link ClassWriter ClassWriter} instance.
*/
public ASMContentHandler(OutputStream os, boolean computeMax) {
this.os = os;
this.computeMax = computeMax;
}
/**
* Returns the bytecode of the class that was build with underneath class
* writer.
*
* @return the bytecode of the class that was build with underneath class
* writer or null if there are no classwriter created.
*/
public byte[] toByteArray() {
return cw == null ? null : cw.toByteArray();
}
/**
* Process notification of the start of an XML element being reached.
*
* @param ns - The Namespace URI, or the empty string if the element has no
* Namespace URI or if Namespace processing is not being performed.
* @param localName - The local name (without prefix), or the empty string
* if Namespace processing is not being performed.
* @param qName - The qualified name (with prefix), or the empty string if
* qualified names are not available.
* @param list - The attributes attached to the element. If there are no
* attributes, it shall be an empty Attributes object.
* @exception SAXException if a parsing error is to be reported
*/
public final void startElement(
String ns,
String localName,
String qName,
Attributes list) throws SAXException
{
// the actual element name is either in localName or qName, depending
// on whether the parser is namespace aware
String name = localName;
if (name == null || name.length() < 1) {
name = qName;
}
// Compute the current matching rule
StringBuffer sb = new StringBuffer(match);
if (match.length() > 0) {
sb.append('/');
}
sb.append(name);
match = sb.toString();
// Fire "begin" events for all relevant rules
Rule r = (Rule) RULES.match(match);
if (r != null)
r.begin(name, list);
}
/**
* Process notification of the end of an XML element being reached.
*
* @param ns - The Namespace URI, or the empty string if the element has no
* Namespace URI or if Namespace processing is not being performed.
* @param localName - The local name (without prefix), or the empty string
* if Namespace processing is not being performed.
* @param qName - The qualified XML 1.0 name (with prefix), or the empty
* string if qualified names are not available.
*
* @exception SAXException if a parsing error is to be reported
*/
public final void endElement(String ns, String localName, String qName)
throws SAXException
{
// the actual element name is either in localName or qName, depending
// on whether the parser is namespace aware
String name = localName;
if (name == null || name.length() < 1) {
name = qName;
}
// Fire "end" events for all relevant rules in reverse order
Rule r = (Rule) RULES.match(match);
if (r != null)
r.end(name);
// Recover the previous match expression
int slash = match.lastIndexOf('/');
if (slash >= 0) {
match = match.substring(0, slash);
} else {
match = "";
}
}
/**
* Process notification of the end of a document and write generated
* bytecode into output stream.
*
* @exception SAXException if parsing or writing error is to be reported.
*/
public final void endDocument() throws SAXException {
try {
os.write(cw.toByteArray());
} catch (IOException ex) {
throw new SAXException(ex.toString(), ex);
}
}
/**
* Return the top object on the stack without removing it. If there are no
* objects on the stack, return <code>null</code>.
*
* @return the top object on the stack without removing it.
*/
final Object peek() {
return stack.size() == 0 ? null : stack.get(stack.size() - 1);
}
/**
* Return the n'th object down the stack, where 0 is the top element and
* [getCount()-1] is the bottom element. If the specified index is out of
* range, return <code>null</code>.
*
* @param n Index of the desired element, where 0 is the top of the stack, 1
* is the next element down, and so on.
* @return the n'th object down the stack.
*/
final Object peek(int n) {
return stack.size() < (n + 1) ? null : stack.get(n);
}
/**
* Pop the top object off of the stack, and return it. If there are no
* objects on the stack, return <code>null</code>.
*
* @return the top object off of the stack.
*/
final Object pop() {
return stack.size() == 0 ? null : stack.remove(stack.size() - 1);
}
/**
* Push a new object onto the top of the object stack.
*
* @param object The new object
*/
final void push(Object object) {
stack.add(object);
}
private static final class RuleSet {
private Map rules = new HashMap();
private List lpatterns = new ArrayList();
private List rpatterns = new ArrayList();
public void add(String path, Object rule) {
String pattern = path;
if (path.startsWith("*/")) {
pattern = path.substring(1);
lpatterns.add(pattern);
} else if (path.endsWith("/*")) {
pattern = path.substring(0, path.length() - 1);
rpatterns.add(pattern);
}
rules.put(pattern, rule);
}
public Object match(String path) {
if (rules.containsKey(path)) {
return rules.get(path);
}
int n = path.lastIndexOf('/');
for (Iterator it = lpatterns.iterator(); it.hasNext();) {
String pattern = (String) it.next();
if (path.substring(n).endsWith(pattern)) {
return rules.get(pattern);
}
}
for (Iterator it = rpatterns.iterator(); it.hasNext();) {
String pattern = (String) it.next();
if (path.startsWith(pattern)) {
return rules.get(pattern);
}
}
return null;
}
}
/**
* Rule
*/
protected abstract class Rule {
public void begin(String name, Attributes attrs) {
}
public void end(String name) {
}
protected final Object getValue(String desc, String val) {
Object value = null;
if (val != null) {
if (desc.equals("Ljava/lang/String;")) {
value = decode(val);
} else if ("Ljava/lang/Integer;".equals(desc)
|| "I".equals(desc) || "S".equals(desc)
|| "B".equals(desc) || "C".equals(desc)
|| desc.equals("Z"))
{
value = new Integer(val);
} else if ("Ljava/lang/Short;".equals(desc)) {
value = new Short(val);
} else if ("Ljava/lang/Byte;".equals(desc)) {
value = new Byte(val);
} else if ("Ljava/lang/Character;".equals(desc)) {
value = new Character(decode(val).charAt(0));
} else if ("Ljava/lang/Boolean;".equals(desc)) {
value = Boolean.valueOf(val);
// } else if ("Ljava/lang/Integer;".equals(desc)
// || desc.equals("I"))
// {
// value = new Integer(val);
// } else if ("Ljava/lang/Character;".equals(desc)
// || desc.equals("C"))
// {
// value = new Character(decode(val).charAt(0));
// } else if ("Ljava/lang/Short;".equals(desc) ||
// desc.equals("S"))
// {
// value = Short.valueOf(val);
// } else if ("Ljava/lang/Byte;".equals(desc) ||
// desc.equals("B"))
// {
// value = Byte.valueOf(val);
} else if ("Ljava/lang/Long;".equals(desc) || desc.equals("J"))
{
value = new Long(val);
} else if ("Ljava/lang/Float;".equals(desc) || desc.equals("F"))
{
value = new Float(val);
} else if ("Ljava/lang/Double;".equals(desc)
|| desc.equals("D"))
{
value = new Double(val);
} else if (Type.getDescriptor(Type.class).equals(desc)) {
value = Type.getType(val);
// } else if ("[I".equals(desc)) {
// value = new int[0]; // TODO
// } else if ("[C".equals(desc)) {
// value = new char[0]; // TODO
// } else if ("[Z".equals(desc)) {
// value = new boolean[0]; // TODO
// } else if ("[S".equals(desc)) {
// value = new short[0]; // TODO
// } else if ("[B".equals(desc)) {
// value = new byte[0]; // TODO
// } else if ("[J".equals(desc)) {
// value = new long[0]; // TODO
// } else if ("[F".equals(desc)) {
// value = new float[0]; // TODO
// } else if ("[D".equals(desc)) {
// value = new double[0]; // TODO
} else {
throw new RuntimeException("Invalid value:" + val
+ " desc:" + desc + " ctx:" + this);
}
}
return value;
}
private final String decode(String val) {
StringBuffer sb = new StringBuffer(val.length());
try {
int n = 0;
while (n < val.length()) {
char c = val.charAt(n);
if (c == '\\') {
n++;
c = val.charAt(n);
if (c == '\\') {
sb.append('\\');
} else {
n++; // skip 'u'
sb.append((char) Integer.parseInt(val.substring(n,
n + 4), 16));
n += 3;
}
} else {
sb.append(c);
}
n++;
}
} catch (RuntimeException ex) {
System.err.println(val + "\n" + ex.toString());
ex.printStackTrace();
throw ex;
}
return sb.toString();
}
protected final Label getLabel(Object label) {
Label lbl = (Label) labels.get(label);
if (lbl == null) {
lbl = new Label();
labels.put(label, lbl);
}
return lbl;
}
// TODO verify move to stack
protected final MethodVisitor getCodeVisitor() {
return (MethodVisitor) peek();
}
protected final int getAccess(String s) {
int access = 0;
if (s.indexOf("public") != -1)
access |= Opcodes.ACC_PUBLIC;
if (s.indexOf("private") != -1)
access |= Opcodes.ACC_PRIVATE;
if (s.indexOf("protected") != -1)
access |= Opcodes.ACC_PROTECTED;
if (s.indexOf("static") != -1)
access |= Opcodes.ACC_STATIC;
if (s.indexOf("final") != -1)
access |= Opcodes.ACC_FINAL;
if (s.indexOf("super") != -1)
access |= Opcodes.ACC_SUPER;
if (s.indexOf("synchronized") != -1)
access |= Opcodes.ACC_SYNCHRONIZED;
if (s.indexOf("volatile") != -1)
access |= Opcodes.ACC_VOLATILE;
if (s.indexOf("bridge") != -1)
access |= Opcodes.ACC_BRIDGE;
if (s.indexOf("varargs") != -1)
access |= Opcodes.ACC_VARARGS;
if (s.indexOf("transient") != -1)
access |= Opcodes.ACC_TRANSIENT;
if (s.indexOf("native") != -1)
access |= Opcodes.ACC_NATIVE;
if (s.indexOf("interface") != -1)
access |= Opcodes.ACC_INTERFACE;
if (s.indexOf("abstract") != -1)
access |= Opcodes.ACC_ABSTRACT;
if (s.indexOf("strict") != -1)
access |= Opcodes.ACC_STRICT;
if (s.indexOf("synthetic") != -1)
access |= Opcodes.ACC_SYNTHETIC;
if (s.indexOf("annotation") != -1)
access |= Opcodes.ACC_ANNOTATION;
if (s.indexOf("enum") != -1)
access |= Opcodes.ACC_ENUM;
if (s.indexOf("deprecated") != -1)
access |= Opcodes.ACC_DEPRECATED;
return access;
}
}
/**
* ClassRule
*/
private final class ClassRule extends Rule {
public final void begin(String name, Attributes attrs) {
int major = Integer.parseInt(attrs.getValue("major"));
int minor = Integer.parseInt(attrs.getValue("minor"));
cw = new ClassWriter(computeMax);
Map vals = new HashMap();
vals.put("version", new Integer(minor << 16 | major));
vals.put("access", attrs.getValue("access"));
vals.put("name", attrs.getValue("name"));
vals.put("parent", attrs.getValue("parent"));
vals.put("source", attrs.getValue("source"));
vals.put("signature", attrs.getValue("signature"));
vals.put("interfaces", new ArrayList());
push(vals);
// values will be extracted in InterfacesRule.end();
}
}
private final class SourceRule extends Rule {
public void begin(String name, Attributes attrs) {
String file = attrs.getValue("file");
String debug = attrs.getValue("debug");
cw.visitSource(file, debug);
}
}
/**
* InterfaceRule
*/
private final class InterfaceRule extends Rule {
public final void begin(String name, Attributes attrs) {
((List) ((Map) peek()).get("interfaces")).add(attrs.getValue("name"));
}
}
/**
* InterfacesRule
*/
private final class InterfacesRule extends Rule {
public final void end(String element) {
Map vals = (Map) pop();
int version = ((Integer) vals.get("version")).intValue();
int access = getAccess((String) vals.get("access"));
String name = (String) vals.get("name");
String signature = (String) vals.get("signature");
String parent = (String) vals.get("parent");
List infs = (List) vals.get("interfaces");
String[] interfaces = (String[]) infs.toArray(new String[infs.size()]);
cw.visit(version, access, name, signature, parent, interfaces);
push(cw);
}
}
/**
* OuterClassRule
*/
private final class OuterClassRule extends Rule {
public final void begin(String element, Attributes attrs) {
String owner = attrs.getValue("owner");
String name = attrs.getValue("name");
String desc = attrs.getValue("desc");
cw.visitOuterClass(owner, name, desc);
}
}
/**
* InnerClassRule
*/
private final class InnerClassRule extends Rule {
public final void begin(String element, Attributes attrs) {
int access = getAccess(attrs.getValue("access"));
String name = attrs.getValue("name");
String outerName = attrs.getValue("outerName");
String innerName = attrs.getValue("innerName");
cw.visitInnerClass(name, outerName, innerName, access);
}
}
/**
* FieldRule
*/
private final class FieldRule extends Rule {
public final void begin(String element, Attributes attrs) {
int access = getAccess(attrs.getValue("access"));
String name = attrs.getValue("name");
String signature = attrs.getValue("signature");
String desc = attrs.getValue("desc");
Object value = getValue(desc, attrs.getValue("value"));
push(cw.visitField(access, name, desc, signature, value));
}
public void end(String name) {
((FieldVisitor) pop()).visitEnd();
}
}
/**
* MethodRule
*/
private final class MethodRule extends Rule {
public final void begin(String name, Attributes attrs) {
labels = new HashMap();
Map vals = new HashMap();
vals.put("access", attrs.getValue("access"));
vals.put("name", attrs.getValue("name"));
vals.put("desc", attrs.getValue("desc"));
vals.put("signature", attrs.getValue("signature"));
vals.put("exceptions", new ArrayList());
push(vals);
// values will be extracted in ExceptionsRule.end();
}
public final void end(String name) {
((MethodVisitor) pop()).visitEnd();
labels = null;
}
}
/**
* ExceptionRule
*/
private final class ExceptionRule extends Rule {
public final void begin(String name, Attributes attrs) {
((List) ((Map) peek()).get("exceptions")).add(attrs.getValue("name"));
}
}
/**
* ExceptionsRule
*/
private final class ExceptionsRule extends Rule {
public final void end(String element) {
Map vals = (Map) pop();
int access = getAccess((String) vals.get("access"));
String name = (String) vals.get("name");
String desc = (String) vals.get("desc");
String signature = (String) vals.get("signature");
List excs = (List) vals.get("exceptions");
String[] exceptions = (String[]) excs.toArray(new String[excs.size()]);
push(cw.visitMethod(access, name, desc, signature, exceptions));
}
}
/**
* TableSwitchRule
*/
private class TableSwitchRule extends Rule {
public final void begin(String name, Attributes attrs) {
Map vals = new HashMap();
vals.put("min", attrs.getValue("min"));
vals.put("max", attrs.getValue("max"));
vals.put("dflt", attrs.getValue("dflt"));
vals.put("labels", new ArrayList());
push(vals);
}
public final void end(String name) {
Map vals = (Map) pop();
int min = Integer.parseInt((String) vals.get("min"));
int max = Integer.parseInt((String) vals.get("max"));
Label dflt = getLabel(vals.get("dflt"));
List lbls = (List) vals.get("labels");
Label[] labels = (Label[]) lbls.toArray(new Label[lbls.size()]);
getCodeVisitor().visitTableSwitchInsn(min, max, dflt, labels);
}
}
/**
* TableSwitchLabelRule
*/
private final class TableSwitchLabelRule extends Rule {
public final void begin(String name, Attributes attrs) {
((List) ((Map) peek()).get("labels")).add(getLabel(attrs.getValue("name")));
}
}
/**
* LookupSwitchRule
*/
private final class LookupSwitchRule extends Rule {
public final void begin(String name, Attributes attrs) {
Map vals = new HashMap();
vals.put("dflt", attrs.getValue("dflt"));
vals.put("labels", new ArrayList());
vals.put("keys", new ArrayList());
push(vals);
}
public final void end(String name) {
Map vals = (Map) pop();
Label dflt = getLabel(vals.get("dflt"));
List keyList = (List) vals.get("keys");
List lbls = (List) vals.get("labels");
Label[] labels = (Label[]) lbls.toArray(new Label[lbls.size()]);
int[] keys = new int[keyList.size()];
for (int i = 0; i < keys.length; i++) {
keys[i] = Integer.parseInt((String) keyList.get(i));
}
getCodeVisitor().visitLookupSwitchInsn(dflt, keys, labels);
}
}
/**
* LookupSwitchLabelRule
*/
private final class LookupSwitchLabelRule extends Rule {
public final void begin(String name, Attributes attrs) {
Map vals = (Map) peek();
((List) vals.get("labels")).add(getLabel(attrs.getValue("name")));
((List) vals.get("keys")).add(attrs.getValue("key"));
}
}
/**
* LabelRule
*/
private final class LabelRule extends Rule {
public final void begin(String name, Attributes attrs) {
getCodeVisitor().visitLabel(getLabel(attrs.getValue("name")));
}
}
/**
* TryCatchRule
*/
private final class TryCatchRule extends Rule {
public final void begin(String name, Attributes attrs) {
Label start = getLabel(attrs.getValue("start"));
Label end = getLabel(attrs.getValue("end"));
Label handler = getLabel(attrs.getValue("handler"));
String type = attrs.getValue("type");
getCodeVisitor().visitTryCatchBlock(start, end, handler, type);
}
}
/**
* LineNumberRule
*/
private final class LineNumberRule extends Rule {
public final void begin(String name, Attributes attrs) {
int line = Integer.parseInt(attrs.getValue("line"));
Label start = getLabel(attrs.getValue("start"));
getCodeVisitor().visitLineNumber(line, start);
}
}
/**
* LocalVarRule
*/
private final class LocalVarRule extends Rule {
public final void begin(String element, Attributes attrs) {
String name = attrs.getValue("name");
String desc = attrs.getValue("desc");
String signature = attrs.getValue("signature");
Label start = getLabel(attrs.getValue("start"));
Label end = getLabel(attrs.getValue("end"));
int var = Integer.parseInt(attrs.getValue("var"));
getCodeVisitor().visitLocalVariable(name,
desc,
signature,
start,
end,
var);
}
}
/**
* OpcodesRule
*/
private final class OpcodesRule extends Rule {
// public boolean match( String match, String element) {
// return match.startsWith( path) && OPCODES.containsKey( element);
// }
public final void begin(String element, Attributes attrs) {
Opcode o = ((Opcode) OPCODES.get(element));
if (o == null)
return;
switch (o.type) {
case OpcodeGroup.INSN:
getCodeVisitor().visitInsn(o.opcode);
break;
case OpcodeGroup.INSN_FIELD:
getCodeVisitor().visitFieldInsn(o.opcode,
attrs.getValue("owner"),
attrs.getValue("name"),
attrs.getValue("desc"));
break;
case OpcodeGroup.INSN_INT:
getCodeVisitor().visitIntInsn(o.opcode,
Integer.parseInt(attrs.getValue("value")));
break;
case OpcodeGroup.INSN_JUMP:
getCodeVisitor().visitJumpInsn(o.opcode,
getLabel(attrs.getValue("label")));
break;
case OpcodeGroup.INSN_METHOD:
getCodeVisitor().visitMethodInsn(o.opcode,
attrs.getValue("owner"),
attrs.getValue("name"),
attrs.getValue("desc"));
break;
case OpcodeGroup.INSN_TYPE:
getCodeVisitor().visitTypeInsn(o.opcode,
attrs.getValue("desc"));
break;
case OpcodeGroup.INSN_VAR:
getCodeVisitor().visitVarInsn(o.opcode,
Integer.parseInt(attrs.getValue("var")));
break;
case OpcodeGroup.INSN_IINC:
getCodeVisitor().visitIincInsn(Integer.parseInt(attrs.getValue("var")),
Integer.parseInt(attrs.getValue("inc")));
break;
case OpcodeGroup.INSN_LDC:
getCodeVisitor().visitLdcInsn(getValue(attrs.getValue("desc"),
attrs.getValue("cst")));
break;
case OpcodeGroup.INSN_MULTIANEWARRAY:
getCodeVisitor().visitMultiANewArrayInsn(attrs.getValue("desc"),
Integer.parseInt(attrs.getValue("dims")));
break;
default:
throw new RuntimeException("Invalid element: " + element
+ " at " + match);
}
}
}
/**
* MaxRule
*/
private final class MaxRule extends Rule {
public final void begin(String element, Attributes attrs) {
int maxStack = Integer.parseInt(attrs.getValue("maxStack"));
int maxLocals = Integer.parseInt(attrs.getValue("maxLocals"));
getCodeVisitor().visitMaxs(maxStack, maxLocals);
}
}
private final class AnnotationRule extends Rule {
public void begin(String name, Attributes attrs) {
String desc = attrs.getValue("desc");
boolean visible = Boolean.valueOf(attrs.getValue("visible"))
.booleanValue();
Object v = peek();
if (v instanceof ClassVisitor) {
push(((ClassVisitor) v).visitAnnotation(desc, visible));
} else if (v instanceof FieldVisitor) {
push(((FieldVisitor) v).visitAnnotation(desc, visible));
} else if (v instanceof MethodVisitor) {
push(((MethodVisitor) v).visitAnnotation(desc, visible));
}
}
public void end(String name) {
((AnnotationVisitor) pop()).visitEnd();
}
}
private final class AnnotationParameterRule extends Rule {
public void begin(String name, Attributes attrs) {
int parameter = Integer.parseInt(attrs.getValue("parameter"));
String desc = attrs.getValue("desc");
boolean visible = Boolean.valueOf(attrs.getValue("visible"))
.booleanValue();
push(((MethodVisitor) peek()).visitParameterAnnotation(parameter,
desc,
visible));
}
public void end(String name) {
((AnnotationVisitor) pop()).visitEnd();
}
}
private final class AnnotationValueRule extends Rule {
public void begin(String nm, Attributes attrs) {
String name = attrs.getValue("name");
String desc = attrs.getValue("desc");
String value = attrs.getValue("value");
((AnnotationVisitor) peek()).visit(name, getValue(desc, value));
}
}
private final class AnnotationValueEnumRule extends Rule {
public void begin(String nm, Attributes attrs) {
String name = attrs.getValue("name");
String desc = attrs.getValue("desc");
String value = attrs.getValue("value");
((AnnotationVisitor) peek()).visitEnum(name, desc, value);
}
}
private final class AnnotationValueAnnotationRule extends Rule {
public void begin(String nm, Attributes attrs) {
String name = attrs.getValue("name");
String desc = attrs.getValue("desc");
push(((AnnotationVisitor) peek()).visitAnnotation(name, desc));
}
public void end(String name) {
((AnnotationVisitor) pop()).visitEnd();
}
}
private final class AnnotationValueArrayRule extends Rule {
public void begin(String nm, Attributes attrs) {
String name = attrs.getValue("name");
push(((AnnotationVisitor) peek()).visitArray(name));
}
public void end(String name) {
((AnnotationVisitor) pop()).visitEnd();
}
}
private final class AnnotationDefaultRule extends Rule {
public void begin(String nm, Attributes attrs) {
push(((MethodVisitor) peek()).visitAnnotationDefault());
}
public void end(String name) {
((AnnotationVisitor) pop()).visitEnd();
}
}
/**
* Opcode
*/
private final static class Opcode {
public int opcode;
public int type;
public Opcode(int opcode, int type) {
this.opcode = opcode;
this.type = type;
}
}
}