/*
* Copyright 2010 Alibaba Group Holding Limited.
* All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/***
* 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 com.alibaba.citrus.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.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import com.alibaba.citrus.asm.AnnotationVisitor;
import com.alibaba.citrus.asm.ClassVisitor;
import com.alibaba.citrus.asm.ClassWriter;
import com.alibaba.citrus.asm.FieldVisitor;
import com.alibaba.citrus.asm.Label;
import com.alibaba.citrus.asm.MethodVisitor;
import com.alibaba.citrus.asm.Opcodes;
import com.alibaba.citrus.asm.Type;
/**
* 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 com.alibaba.citrus.asm.xml.SAXClassAdapter
* @see com.alibaba.citrus.asm.xml.Processor
* @author Eugene Kuleshov
*/
public class ASMContentHandler extends DefaultHandler implements Opcodes {
/**
* Stack of the intermediate processing contexts.
*/
private final 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/frame", new FrameRule());
RULES.add(BASE + "/method/code/frame/local", new FrameTypeRule());
RULES.add(BASE + "/method/code/frame/stack", new FrameTypeRule());
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 {
addOpcode("NOP", NOP, OpcodeGroup.INSN);
addOpcode("ACONST_NULL", ACONST_NULL, OpcodeGroup.INSN);
addOpcode("ICONST_M1", ICONST_M1, OpcodeGroup.INSN);
addOpcode("ICONST_0", ICONST_0, OpcodeGroup.INSN);
addOpcode("ICONST_1", ICONST_1, OpcodeGroup.INSN);
addOpcode("ICONST_2", ICONST_2, OpcodeGroup.INSN);
addOpcode("ICONST_3", ICONST_3, OpcodeGroup.INSN);
addOpcode("ICONST_4", ICONST_4, OpcodeGroup.INSN);
addOpcode("ICONST_5", ICONST_5, OpcodeGroup.INSN);
addOpcode("LCONST_0", LCONST_0, OpcodeGroup.INSN);
addOpcode("LCONST_1", LCONST_1, OpcodeGroup.INSN);
addOpcode("FCONST_0", FCONST_0, OpcodeGroup.INSN);
addOpcode("FCONST_1", FCONST_1, OpcodeGroup.INSN);
addOpcode("FCONST_2", FCONST_2, OpcodeGroup.INSN);
addOpcode("DCONST_0", DCONST_0, OpcodeGroup.INSN);
addOpcode("DCONST_1", DCONST_1, OpcodeGroup.INSN);
addOpcode("BIPUSH", BIPUSH, OpcodeGroup.INSN_INT);
addOpcode("SIPUSH", SIPUSH, OpcodeGroup.INSN_INT);
addOpcode("LDC", LDC, OpcodeGroup.INSN_LDC);
addOpcode("ILOAD", ILOAD, OpcodeGroup.INSN_VAR);
addOpcode("LLOAD", LLOAD, OpcodeGroup.INSN_VAR);
addOpcode("FLOAD", FLOAD, OpcodeGroup.INSN_VAR);
addOpcode("DLOAD", DLOAD, OpcodeGroup.INSN_VAR);
addOpcode("ALOAD", ALOAD, OpcodeGroup.INSN_VAR);
addOpcode("IALOAD", IALOAD, OpcodeGroup.INSN);
addOpcode("LALOAD", LALOAD, OpcodeGroup.INSN);
addOpcode("FALOAD", FALOAD, OpcodeGroup.INSN);
addOpcode("DALOAD", DALOAD, OpcodeGroup.INSN);
addOpcode("AALOAD", AALOAD, OpcodeGroup.INSN);
addOpcode("BALOAD", BALOAD, OpcodeGroup.INSN);
addOpcode("CALOAD", CALOAD, OpcodeGroup.INSN);
addOpcode("SALOAD", SALOAD, OpcodeGroup.INSN);
addOpcode("ISTORE", ISTORE, OpcodeGroup.INSN_VAR);
addOpcode("LSTORE", LSTORE, OpcodeGroup.INSN_VAR);
addOpcode("FSTORE", FSTORE, OpcodeGroup.INSN_VAR);
addOpcode("DSTORE", DSTORE, OpcodeGroup.INSN_VAR);
addOpcode("ASTORE", ASTORE, OpcodeGroup.INSN_VAR);
addOpcode("IASTORE", IASTORE, OpcodeGroup.INSN);
addOpcode("LASTORE", LASTORE, OpcodeGroup.INSN);
addOpcode("FASTORE", FASTORE, OpcodeGroup.INSN);
addOpcode("DASTORE", DASTORE, OpcodeGroup.INSN);
addOpcode("AASTORE", AASTORE, OpcodeGroup.INSN);
addOpcode("BASTORE", BASTORE, OpcodeGroup.INSN);
addOpcode("CASTORE", CASTORE, OpcodeGroup.INSN);
addOpcode("SASTORE", SASTORE, OpcodeGroup.INSN);
addOpcode("POP", POP, OpcodeGroup.INSN);
addOpcode("POP2", POP2, OpcodeGroup.INSN);
addOpcode("DUP", DUP, OpcodeGroup.INSN);
addOpcode("DUP_X1", DUP_X1, OpcodeGroup.INSN);
addOpcode("DUP_X2", DUP_X2, OpcodeGroup.INSN);
addOpcode("DUP2", DUP2, OpcodeGroup.INSN);
addOpcode("DUP2_X1", DUP2_X1, OpcodeGroup.INSN);
addOpcode("DUP2_X2", DUP2_X2, OpcodeGroup.INSN);
addOpcode("SWAP", SWAP, OpcodeGroup.INSN);
addOpcode("IADD", IADD, OpcodeGroup.INSN);
addOpcode("LADD", LADD, OpcodeGroup.INSN);
addOpcode("FADD", FADD, OpcodeGroup.INSN);
addOpcode("DADD", DADD, OpcodeGroup.INSN);
addOpcode("ISUB", ISUB, OpcodeGroup.INSN);
addOpcode("LSUB", LSUB, OpcodeGroup.INSN);
addOpcode("FSUB", FSUB, OpcodeGroup.INSN);
addOpcode("DSUB", DSUB, OpcodeGroup.INSN);
addOpcode("IMUL", IMUL, OpcodeGroup.INSN);
addOpcode("LMUL", LMUL, OpcodeGroup.INSN);
addOpcode("FMUL", FMUL, OpcodeGroup.INSN);
addOpcode("DMUL", DMUL, OpcodeGroup.INSN);
addOpcode("IDIV", IDIV, OpcodeGroup.INSN);
addOpcode("LDIV", LDIV, OpcodeGroup.INSN);
addOpcode("FDIV", FDIV, OpcodeGroup.INSN);
addOpcode("DDIV", DDIV, OpcodeGroup.INSN);
addOpcode("IREM", IREM, OpcodeGroup.INSN);
addOpcode("LREM", LREM, OpcodeGroup.INSN);
addOpcode("FREM", FREM, OpcodeGroup.INSN);
addOpcode("DREM", DREM, OpcodeGroup.INSN);
addOpcode("INEG", INEG, OpcodeGroup.INSN);
addOpcode("LNEG", LNEG, OpcodeGroup.INSN);
addOpcode("FNEG", FNEG, OpcodeGroup.INSN);
addOpcode("DNEG", DNEG, OpcodeGroup.INSN);
addOpcode("ISHL", ISHL, OpcodeGroup.INSN);
addOpcode("LSHL", LSHL, OpcodeGroup.INSN);
addOpcode("ISHR", ISHR, OpcodeGroup.INSN);
addOpcode("LSHR", LSHR, OpcodeGroup.INSN);
addOpcode("IUSHR", IUSHR, OpcodeGroup.INSN);
addOpcode("LUSHR", LUSHR, OpcodeGroup.INSN);
addOpcode("IAND", IAND, OpcodeGroup.INSN);
addOpcode("LAND", LAND, OpcodeGroup.INSN);
addOpcode("IOR", IOR, OpcodeGroup.INSN);
addOpcode("LOR", LOR, OpcodeGroup.INSN);
addOpcode("IXOR", IXOR, OpcodeGroup.INSN);
addOpcode("LXOR", LXOR, OpcodeGroup.INSN);
addOpcode("IINC", IINC, OpcodeGroup.INSN_IINC);
addOpcode("I2L", I2L, OpcodeGroup.INSN);
addOpcode("I2F", I2F, OpcodeGroup.INSN);
addOpcode("I2D", I2D, OpcodeGroup.INSN);
addOpcode("L2I", L2I, OpcodeGroup.INSN);
addOpcode("L2F", L2F, OpcodeGroup.INSN);
addOpcode("L2D", L2D, OpcodeGroup.INSN);
addOpcode("F2I", F2I, OpcodeGroup.INSN);
addOpcode("F2L", F2L, OpcodeGroup.INSN);
addOpcode("F2D", F2D, OpcodeGroup.INSN);
addOpcode("D2I", D2I, OpcodeGroup.INSN);
addOpcode("D2L", D2L, OpcodeGroup.INSN);
addOpcode("D2F", D2F, OpcodeGroup.INSN);
addOpcode("I2B", I2B, OpcodeGroup.INSN);
addOpcode("I2C", I2C, OpcodeGroup.INSN);
addOpcode("I2S", I2S, OpcodeGroup.INSN);
addOpcode("LCMP", LCMP, OpcodeGroup.INSN);
addOpcode("FCMPL", FCMPL, OpcodeGroup.INSN);
addOpcode("FCMPG", FCMPG, OpcodeGroup.INSN);
addOpcode("DCMPL", DCMPL, OpcodeGroup.INSN);
addOpcode("DCMPG", DCMPG, OpcodeGroup.INSN);
addOpcode("IFEQ", IFEQ, OpcodeGroup.INSN_JUMP);
addOpcode("IFNE", IFNE, OpcodeGroup.INSN_JUMP);
addOpcode("IFLT", IFLT, OpcodeGroup.INSN_JUMP);
addOpcode("IFGE", IFGE, OpcodeGroup.INSN_JUMP);
addOpcode("IFGT", IFGT, OpcodeGroup.INSN_JUMP);
addOpcode("IFLE", IFLE, OpcodeGroup.INSN_JUMP);
addOpcode("IF_ICMPEQ", IF_ICMPEQ, OpcodeGroup.INSN_JUMP);
addOpcode("IF_ICMPNE", IF_ICMPNE, OpcodeGroup.INSN_JUMP);
addOpcode("IF_ICMPLT", IF_ICMPLT, OpcodeGroup.INSN_JUMP);
addOpcode("IF_ICMPGE", IF_ICMPGE, OpcodeGroup.INSN_JUMP);
addOpcode("IF_ICMPGT", IF_ICMPGT, OpcodeGroup.INSN_JUMP);
addOpcode("IF_ICMPLE", IF_ICMPLE, OpcodeGroup.INSN_JUMP);
addOpcode("IF_ACMPEQ", IF_ACMPEQ, OpcodeGroup.INSN_JUMP);
addOpcode("IF_ACMPNE", IF_ACMPNE, OpcodeGroup.INSN_JUMP);
addOpcode("GOTO", GOTO, OpcodeGroup.INSN_JUMP);
addOpcode("JSR", JSR, OpcodeGroup.INSN_JUMP);
addOpcode("RET", RET, OpcodeGroup.INSN_VAR);
addOpcode("IRETURN", IRETURN, OpcodeGroup.INSN);
addOpcode("LRETURN", LRETURN, OpcodeGroup.INSN);
addOpcode("FRETURN", FRETURN, OpcodeGroup.INSN);
addOpcode("DRETURN", DRETURN, OpcodeGroup.INSN);
addOpcode("ARETURN", ARETURN, OpcodeGroup.INSN);
addOpcode("RETURN", RETURN, OpcodeGroup.INSN);
addOpcode("GETSTATIC", GETSTATIC, OpcodeGroup.INSN_FIELD);
addOpcode("PUTSTATIC", PUTSTATIC, OpcodeGroup.INSN_FIELD);
addOpcode("GETFIELD", GETFIELD, OpcodeGroup.INSN_FIELD);
addOpcode("PUTFIELD", PUTFIELD, OpcodeGroup.INSN_FIELD);
addOpcode("INVOKEVIRTUAL", INVOKEVIRTUAL, OpcodeGroup.INSN_METHOD);
addOpcode("INVOKESPECIAL", INVOKESPECIAL, OpcodeGroup.INSN_METHOD);
addOpcode("INVOKESTATIC", INVOKESTATIC, OpcodeGroup.INSN_METHOD);
addOpcode("INVOKEINTERFACE", INVOKEINTERFACE, OpcodeGroup.INSN_METHOD);
addOpcode("NEW", NEW, OpcodeGroup.INSN_TYPE);
addOpcode("NEWARRAY", NEWARRAY, OpcodeGroup.INSN_INT);
addOpcode("ANEWARRAY", ANEWARRAY, OpcodeGroup.INSN_TYPE);
addOpcode("ARRAYLENGTH", ARRAYLENGTH, OpcodeGroup.INSN);
addOpcode("ATHROW", ATHROW, OpcodeGroup.INSN);
addOpcode("CHECKCAST", CHECKCAST, OpcodeGroup.INSN_TYPE);
addOpcode("INSTANCEOF", INSTANCEOF, OpcodeGroup.INSN_TYPE);
addOpcode("MONITORENTER", MONITORENTER, OpcodeGroup.INSN);
addOpcode("MONITOREXIT", MONITOREXIT, OpcodeGroup.INSN);
addOpcode("MULTIANEWARRAY", MULTIANEWARRAY, OpcodeGroup.INSN_MULTIANEWARRAY);
addOpcode("IFNULL", IFNULL, OpcodeGroup.INSN_JUMP);
addOpcode("IFNONNULL", IFNONNULL, OpcodeGroup.INSN_JUMP);
}
private static void addOpcode(String operStr, int oper, int group) {
OPCODES.put(operStr, new Opcode(oper, group));
}
private static final Map TYPES = new HashMap();
static {
String[] types = SAXCodeAdapter.TYPES;
for (int i = 0; i < types.length; i++) {
TYPES.put(types[i], new Integer(i));
}
}
/**
* 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(final OutputStream os, final 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 lName - 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(final String ns, final String lName, final String qName, final Attributes list)
throws SAXException {
// the actual element name is either in lName or qName, depending
// on whether the parser is namespace aware
String name = lName == null || lName.length() == 0 ? qName : lName;
// Compute the current matching rule
StringBuilder sb = new StringBuilder(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 lName - 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(final String ns, final String lName, final String qName) throws SAXException {
// the actual element name is either in lName or qName, depending
// on whether the parser is namespace aware
String name = lName == null || lName.length() == 0 ? qName : lName;
// 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(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() {
int size = stack.size();
return size == 0 ? null : stack.get(size - 1);
}
/**
* 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() {
int size = stack.size();
return size == 0 ? null : stack.remove(size - 1);
}
/**
* Push a new object onto the top of the object stack.
*
* @param object The new object
*/
final void push(final Object object) {
stack.add(object);
}
private static final class RuleSet {
private final Map rules = new HashMap();
private final List lpatterns = new ArrayList();
private final List rpatterns = new ArrayList();
public void add(final String path, final 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(final 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(final String name, final Attributes attrs) throws SAXException {
}
public void end(final String name) {
}
protected final Object getValue(final String desc, final String val) throws SAXException {
Object value = null;
if (val != null) {
if ("Ljava/lang/String;".equals(desc)) {
value = decode(val);
} else if ("Ljava/lang/Integer;".equals(desc) || "I".equals(desc) || "S".equals(desc)
|| "B".equals(desc) || "C".equals(desc) || "Z".equals(desc)) {
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/Long;".equals(desc) || "J".equals(desc)) {
value = new Long(val);
} else if ("Ljava/lang/Float;".equals(desc) || "F".equals(desc)) {
value = new Float(val);
} else if ("Ljava/lang/Double;".equals(desc) || "D".equals(desc)) {
value = new Double(val);
} else if (Type.getDescriptor(Type.class).equals(desc)) {
value = Type.getType(val);
} else {
// TODO use of default toString().
throw new SAXException("Invalid value:" + val + " desc:" + desc + " ctx:" + this);
}
}
return value;
}
private final String decode(final String val) throws SAXException {
StringBuilder sb = new StringBuilder(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) {
throw new SAXException(ex);
}
return sb.toString();
}
protected final Label getLabel(final 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(final String s) {
int access = 0;
if (s.indexOf("public") != -1) {
access |= ACC_PUBLIC;
}
if (s.indexOf("private") != -1) {
access |= ACC_PRIVATE;
}
if (s.indexOf("protected") != -1) {
access |= ACC_PROTECTED;
}
if (s.indexOf("static") != -1) {
access |= ACC_STATIC;
}
if (s.indexOf("final") != -1) {
access |= ACC_FINAL;
}
if (s.indexOf("super") != -1) {
access |= ACC_SUPER;
}
if (s.indexOf("synchronized") != -1) {
access |= ACC_SYNCHRONIZED;
}
if (s.indexOf("volatile") != -1) {
access |= ACC_VOLATILE;
}
if (s.indexOf("bridge") != -1) {
access |= ACC_BRIDGE;
}
if (s.indexOf("varargs") != -1) {
access |= ACC_VARARGS;
}
if (s.indexOf("transient") != -1) {
access |= ACC_TRANSIENT;
}
if (s.indexOf("native") != -1) {
access |= ACC_NATIVE;
}
if (s.indexOf("interface") != -1) {
access |= ACC_INTERFACE;
}
if (s.indexOf("abstract") != -1) {
access |= ACC_ABSTRACT;
}
if (s.indexOf("strict") != -1) {
access |= ACC_STRICT;
}
if (s.indexOf("synthetic") != -1) {
access |= ACC_SYNTHETIC;
}
if (s.indexOf("annotation") != -1) {
access |= ACC_ANNOTATION;
}
if (s.indexOf("enum") != -1) {
access |= ACC_ENUM;
}
if (s.indexOf("deprecated") != -1) {
access |= ACC_DEPRECATED;
}
return access;
}
}
/**
* ClassRule
*/
private final class ClassRule extends Rule {
public final void begin(final String name, final Attributes attrs) {
int major = Integer.parseInt(attrs.getValue("major"));
int minor = Integer.parseInt(attrs.getValue("minor"));
cw = new ClassWriter(computeMax ? ClassWriter.COMPUTE_MAXS : 0);
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(final String name, final 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(final String name, final Attributes attrs) {
((List) ((HashMap) peek()).get("interfaces")).add(attrs.getValue("name"));
}
}
/**
* InterfacesRule
*/
private final class InterfacesRule extends Rule {
public final void end(final String element) {
Map vals = (HashMap) 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(final String element, final 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(final String element, final 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(final String element, final Attributes attrs) throws SAXException {
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(final String name) {
((FieldVisitor) pop()).visitEnd();
}
}
/**
* MethodRule
*/
private final class MethodRule extends Rule {
public final void begin(final String name, final 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(final String name) {
((MethodVisitor) pop()).visitEnd();
labels = null;
}
}
/**
* ExceptionRule
*/
private final class ExceptionRule extends Rule {
public final void begin(final String name, final Attributes attrs) {
((List) ((HashMap) peek()).get("exceptions")).add(attrs.getValue("name"));
}
}
/**
* ExceptionsRule
*/
private final class ExceptionsRule extends Rule {
public final void end(final String element) {
Map vals = (HashMap) 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(final String name, final 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(final String name) {
Map vals = (HashMap) 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(final String name, final Attributes attrs) {
((List) ((HashMap) peek()).get("labels")).add(getLabel(attrs.getValue("name")));
}
}
/**
* LookupSwitchRule
*/
private final class LookupSwitchRule extends Rule {
public final void begin(final String name, final 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(final String name) {
Map vals = (HashMap) 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(final String name, final Attributes attrs) {
Map vals = (HashMap) peek();
((List) vals.get("labels")).add(getLabel(attrs.getValue("name")));
((List) vals.get("keys")).add(attrs.getValue("key"));
}
}
/**
* FrameRule
*/
private final class FrameRule extends Rule {
public void begin(final String name, final Attributes attrs) {
Map typeLists = new HashMap();
typeLists.put("local", new ArrayList());
typeLists.put("stack", new ArrayList());
push(attrs.getValue("type"));
push(attrs.getValue("count") == null ? "0" : attrs.getValue("count"));
push(typeLists);
}
public void end(final String name) {
Map typeLists = (HashMap) pop();
List locals = (List) typeLists.get("local");
int nLocal = locals.size();
Object[] local = locals.toArray();
List stacks = (List) typeLists.get("stack");
int nStack = stacks.size();
Object[] stack = stacks.toArray();
String count = (String) pop();
String type = (String) pop();
if ("NEW".equals(type)) {
getCodeVisitor().visitFrame(F_NEW, nLocal, local, nStack, stack);
} else if ("FULL".equals(type)) {
getCodeVisitor().visitFrame(F_FULL, nLocal, local, nStack, stack);
} else if ("APPEND".equals(type)) {
getCodeVisitor().visitFrame(F_APPEND, nLocal, local, 0, null);
} else if ("CHOP".equals(type)) {
getCodeVisitor().visitFrame(F_CHOP, Integer.parseInt(count), null, 0, null);
} else if ("SAME".equals(type)) {
getCodeVisitor().visitFrame(F_SAME, 0, null, 0, null);
} else if ("SAME1".equals(type)) {
getCodeVisitor().visitFrame(F_SAME1, 0, null, nStack, stack);
}
}
}
private final class FrameTypeRule extends Rule {
public void begin(final String name, final Attributes attrs) {
List types = (List) ((HashMap) peek()).get(name);
String type = attrs.getValue("type");
if ("uninitialized".equals(type)) {
types.add(getLabel(attrs.getValue("label")));
} else {
Integer t = (Integer) TYPES.get(type);
if (t == null) {
types.add(type);
} else {
types.add(t);
}
}
}
}
/**
* LabelRule
*/
private final class LabelRule extends Rule {
public final void begin(final String name, final Attributes attrs) {
getCodeVisitor().visitLabel(getLabel(attrs.getValue("name")));
}
}
/**
* TryCatchRule
*/
private final class TryCatchRule extends Rule {
public final void begin(final String name, final 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(final String name, final 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(final String element, final 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(final String element, final Attributes attrs) throws SAXException {
Opcode o = (Opcode) OPCODES.get(element);
if (o == null) {
throw new SAXException("Invalid element: " + element + " at " + match);
}
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 Error("Internal error");
}
}
}
/**
* MaxRule
*/
private final class MaxRule extends Rule {
public final void begin(final String element, final 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(final String name, final 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(final String name) {
AnnotationVisitor av = (AnnotationVisitor) pop();
if (av != null) {
av.visitEnd();
}
}
}
private final class AnnotationParameterRule extends Rule {
public void begin(final String name, final 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(final String name) {
AnnotationVisitor av = (AnnotationVisitor) pop();
if (av != null) {
av.visitEnd();
}
}
}
private final class AnnotationValueRule extends Rule {
public void begin(final String nm, final Attributes attrs) throws SAXException {
AnnotationVisitor av = (AnnotationVisitor) peek();
if (av != null) {
av.visit(attrs.getValue("name"), getValue(attrs.getValue("desc"), attrs.getValue("value")));
}
}
}
private final class AnnotationValueEnumRule extends Rule {
public void begin(final String nm, final Attributes attrs) {
AnnotationVisitor av = (AnnotationVisitor) peek();
if (av != null) {
av.visitEnum(attrs.getValue("name"), attrs.getValue("desc"), attrs.getValue("value"));
}
}
}
private final class AnnotationValueAnnotationRule extends Rule {
public void begin(final String nm, final Attributes attrs) {
AnnotationVisitor av = (AnnotationVisitor) peek();
push(av == null ? null : av.visitAnnotation(attrs.getValue("name"), attrs.getValue("desc")));
}
public void end(final String name) {
AnnotationVisitor av = (AnnotationVisitor) pop();
if (av != null) {
av.visitEnd();
}
}
}
private final class AnnotationValueArrayRule extends Rule {
public void begin(final String nm, final Attributes attrs) {
AnnotationVisitor av = (AnnotationVisitor) peek();
push(av == null ? null : av.visitArray(attrs.getValue("name")));
}
public void end(final String name) {
AnnotationVisitor av = (AnnotationVisitor) pop();
if (av != null) {
av.visitEnd();
}
}
}
private final class AnnotationDefaultRule extends Rule {
public void begin(final String nm, final Attributes attrs) {
MethodVisitor av = (MethodVisitor) peek();
push(av == null ? null : av.visitAnnotationDefault());
}
public void end(final String name) {
AnnotationVisitor av = (AnnotationVisitor) pop();
if (av != null) {
av.visitEnd();
}
}
}
/**
* Opcode
*/
private static final class Opcode {
public final int opcode;
public final int type;
private Opcode(final int opcode, final int type) {
this.opcode = opcode;
this.type = type;
}
}
}