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The AspectJ weaver introduces advices to java classes
/* *******************************************************************
* Copyright (c) 2002-2010 Contributors
* All rights reserved.
* This program and the accompanying materials are made available
* under the terms of the Eclipse Public License v1.0
* which accompanies this distribution and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* PARC initial implementation
* Andy Clement 6Jul05 generics - signature attribute
* Abraham Nevado
* ******************************************************************/
package org.aspectj.weaver.bcel;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.IOException;
import java.io.PrintStream;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.SortedMap;
import java.util.TreeMap;
import java.util.Vector;
import org.aspectj.apache.bcel.Constants;
import org.aspectj.apache.bcel.classfile.Attribute;
import org.aspectj.apache.bcel.classfile.ConstantPool;
import org.aspectj.apache.bcel.classfile.Field;
import org.aspectj.apache.bcel.classfile.JavaClass;
import org.aspectj.apache.bcel.classfile.Method;
import org.aspectj.apache.bcel.classfile.Signature;
import org.aspectj.apache.bcel.classfile.Synthetic;
import org.aspectj.apache.bcel.classfile.annotation.AnnotationGen;
import org.aspectj.apache.bcel.generic.BasicType;
import org.aspectj.apache.bcel.generic.ClassGen;
import org.aspectj.apache.bcel.generic.FieldGen;
import org.aspectj.apache.bcel.generic.InstructionConstants;
import org.aspectj.apache.bcel.generic.InstructionFactory;
import org.aspectj.apache.bcel.generic.InstructionHandle;
import org.aspectj.apache.bcel.generic.InstructionList;
import org.aspectj.apache.bcel.generic.ObjectType;
import org.aspectj.apache.bcel.generic.Type;
import org.aspectj.bridge.IMessage;
import org.aspectj.bridge.ISourceLocation;
import org.aspectj.bridge.SourceLocation;
import org.aspectj.weaver.AjAttribute;
import org.aspectj.weaver.AjAttribute.WeaverState;
import org.aspectj.weaver.AjAttribute.WeaverVersionInfo;
import org.aspectj.weaver.BCException;
import org.aspectj.weaver.Member;
import org.aspectj.weaver.MemberKind;
import org.aspectj.weaver.NameMangler;
import org.aspectj.weaver.ResolvedMember;
import org.aspectj.weaver.ResolvedType;
import org.aspectj.weaver.RuntimeVersion;
import org.aspectj.weaver.Shadow;
import org.aspectj.weaver.SignatureUtils;
import org.aspectj.weaver.TypeVariable;
import org.aspectj.weaver.UnresolvedType;
import org.aspectj.weaver.UnresolvedType.TypeKind;
import org.aspectj.weaver.WeaverMessages;
import org.aspectj.weaver.WeaverStateInfo;
import org.aspectj.weaver.World;
import org.aspectj.weaver.bcel.asm.AsmDetector;
import org.aspectj.weaver.bcel.asm.StackMapAdder;
/**
* Lazy lazy lazy. We don't unpack the underlying class unless necessary. Things like new methods and annotations accumulate in here
* until they must be written out, don't add them to the underlying MethodGen! Things are slightly different if this represents an
* Aspect.
*/
public final class LazyClassGen {
private static final Type[] ARRAY_7STRING_INT = new Type[] { Type.STRING, Type.STRING, Type.STRING, Type.STRING, Type.STRING,
Type.STRING, Type.STRING, Type.INT };
private static final Type[] ARRAY_8STRING_INT = new Type[] { Type.STRING, Type.STRING, Type.STRING, Type.STRING, Type.STRING,
Type.STRING, Type.STRING, Type.STRING, Type.INT };
private static final Type[] PARAMSIGNATURE_MAKESJP_METHOD = new Type[] {
Type.STRING, Type.INT, Type.STRING, Type.CLASS, Type.CLASS_ARRAY, Type.STRING_ARRAY, Type.CLASS_ARRAY, Type.CLASS, Type.INT
};
private static final Type[] PARAMSIGNATURE_MAKESJP_CONSTRUCTOR = new Type[] {
Type.STRING, Type.INT, Type.CLASS, Type.CLASS_ARRAY, Type.STRING_ARRAY, Type.CLASS_ARRAY, Type.INT
};
private static final Type[] PARAMSIGNATURE_MAKESJP_CATCHCLAUSE = new Type[] {
Type.STRING, Type.CLASS, Type.CLASS, Type.STRING, Type.INT
};
private static final Type[] PARAMSIGNATURE_MAKESJP_FIELD = new Type[] {
Type.STRING, Type.INT, Type.STRING, Type.CLASS, Type.CLASS, Type.INT
};
private static final Type[] PARAMSIGNATURE_MAKESJP_INITIALIZER = new Type[] {
Type.STRING, Type.INT, Type.CLASS, Type.INT
};
private static final Type[] PARAMSIGNATURE_MAKESJP_MONITOR = new Type[] {
Type.STRING, Type.CLASS, Type.INT
};
private static final Type[] PARAMSIGNATURE_MAKESJP_ADVICE = new Type[] {
Type.STRING, Type.INT, Type.STRING, Type.CLASS, Type.CLASS_ARRAY, Type.STRING_ARRAY,
Type.CLASS_ARRAY, Type.CLASS, Type.INT
};
private static final int ACC_SYNTHETIC = 0x1000;
private static final String[] NO_STRINGS = new String[0];
int highestLineNumber = 0; // ---- JSR 45 info
private final SortedMap inlinedFiles = new TreeMap();
private boolean regenerateGenericSignatureAttribute = false;
private BcelObjectType myType; // XXX is not set for types we create
private ClassGen myGen;
private final ConstantPool cp;
private final World world;
private final String packageName = null;
private final List fields = new ArrayList();
private final List methodGens = new ArrayList();
private final List classGens = new ArrayList();
private final List annotations = new ArrayList();
private int childCounter = 0;
private final InstructionFactory fact;
private boolean isSerializable = false;
private boolean hasSerialVersionUIDField = false;
private boolean serialVersionUIDRequiresInitialization = false;
private long calculatedSerialVersionUID;
private boolean hasClinit = false;
private ResolvedType[] extraSuperInterfaces = null;
private ResolvedType superclass = null;
// ---
static class InlinedSourceFileInfo {
int highestLineNumber;
int offset; // calculated
InlinedSourceFileInfo(int highestLineNumber) {
this.highestLineNumber = highestLineNumber;
}
}
void addInlinedSourceFileInfo(String fullpath, int highestLineNumber) {
Object o = inlinedFiles.get(fullpath);
if (o != null) {
InlinedSourceFileInfo info = (InlinedSourceFileInfo) o;
if (info.highestLineNumber < highestLineNumber) {
info.highestLineNumber = highestLineNumber;
}
} else {
inlinedFiles.put(fullpath, new InlinedSourceFileInfo(highestLineNumber));
}
}
void calculateSourceDebugExtensionOffsets() {
int i = roundUpToHundreds(highestLineNumber);
for (InlinedSourceFileInfo element : inlinedFiles.values()) {
element.offset = i;
i = roundUpToHundreds(i + element.highestLineNumber);
}
}
private static int roundUpToHundreds(int i) {
return ((i / 100) + 1) * 100;
}
int getSourceDebugExtensionOffset(String fullpath) {
return inlinedFiles.get(fullpath).offset;
}
// private Unknown getSourceDebugExtensionAttribute() {
// int nameIndex = cp.addUtf8("SourceDebugExtension");
// String data = getSourceDebugExtensionString();
// //System.err.println(data);
// byte[] bytes = Utility.stringToUTF(data);
// int length = bytes.length;
//
// return new Unknown(nameIndex, length, bytes, cp);
// }
// private LazyClassGen() {}
// public static void main(String[] args) {
// LazyClassGen m = new LazyClassGen();
// m.highestLineNumber = 37;
// m.inlinedFiles.put("boo/baz/foo.java", new InlinedSourceFileInfo( 83));
// m.inlinedFiles.put("boo/barz/foo.java", new InlinedSourceFileInfo(292));
// m.inlinedFiles.put("boo/baz/moo.java", new InlinedSourceFileInfo(128));
// m.calculateSourceDebugExtensionOffsets();
// System.err.println(m.getSourceDebugExtensionString());
// }
// For the entire pathname, we're using package names. This is probably
// wrong.
// private String getSourceDebugExtensionString() {
// StringBuffer out = new StringBuffer();
// String myFileName = getFileName();
// // header section
// out.append("SMAP\n");
// out.append(myFileName);
// out.append("\nAspectJ\n");
// // stratum section
// out.append("*S AspectJ\n");
// // file section
// out.append("*F\n");
// out.append("1 ");
// out.append(myFileName);
// out.append("\n");
// int i = 2;
// for (Iterator iter = inlinedFiles.keySet().iterator(); iter.hasNext();) {
// String element = (String) iter.next();
// int ii = element.lastIndexOf('/');
// if (ii == -1) {
// out.append(i++); out.append(' ');
// out.append(element); out.append('\n');
// } else {
// out.append("+ "); out.append(i++); out.append(' ');
// out.append(element.substring(ii+1)); out.append('\n');
// out.append(element); out.append('\n');
// }
// }
// // emit line section
// out.append("*L\n");
// out.append("1#1,");
// out.append(highestLineNumber);
// out.append(":1,1\n");
// i = 2;
// for (Iterator iter = inlinedFiles.values().iterator(); iter.hasNext();) {
// InlinedSourceFileInfo element = (InlinedSourceFileInfo) iter.next();
// out.append("1#");
// out.append(i++); out.append(',');
// out.append(element.highestLineNumber); out.append(":");
// out.append(element.offset + 1); out.append(",1\n");
// }
// // end section
// out.append("*E\n");
// // and finish up...
// return out.toString();
// }
// ---- end JSR45-related stuff
/** Emit disassembled class and newline to out */
public static void disassemble(String path, String name, PrintStream out) throws IOException {
if (null == out) {
return;
}
// out.println("classPath: " + classPath);
BcelWorld world = new BcelWorld(path);
UnresolvedType ut = UnresolvedType.forName(name);
ut.setNeedsModifiableDelegate(true);
LazyClassGen clazz = new LazyClassGen(BcelWorld.getBcelObjectType(world.resolve(ut)));
clazz.print(out);
out.println();
}
public String getNewGeneratedNameTag() {
return new Integer(childCounter++).toString();
}
// ----
public LazyClassGen(String class_name, String super_class_name, String file_name, int access_flags, String[] interfaces,
World world) {
myGen = new ClassGen(class_name, super_class_name, file_name, access_flags, interfaces);
cp = myGen.getConstantPool();
fact = new InstructionFactory(myGen, cp);
regenerateGenericSignatureAttribute = true;
this.world = world;
}
public void setMajorMinor(int major, int minor) {
myGen.setMajor(major);
myGen.setMinor(minor);
}
public int getMajor() {
return myGen.getMajor();
}
public int getMinor() {
return myGen.getMinor();
}
// Non child type, so it comes from a real type in the world.
public LazyClassGen(BcelObjectType myType) {
myGen = new ClassGen(myType.getJavaClass());
cp = myGen.getConstantPool();
fact = new InstructionFactory(myGen, cp);
this.myType = myType;
world = myType.getResolvedTypeX().getWorld();
/* Does this class support serialization */
if (implementsSerializable(getType())) {
isSerializable = true;
// ResolvedMember[] fields = getType().getDeclaredFields();
// for (int i = 0; i < fields.length; i++) {
// ResolvedMember field = fields[i];
// if (field.getName().equals("serialVersionUID")
// && field.isStatic() && field.getType().equals(UnresolvedType.LONG))
// {
// hasSerialVersionUIDField = true;
// }
// }
hasSerialVersionUIDField = hasSerialVersionUIDField(getType());
ResolvedMember[] methods = getType().getDeclaredMethods();
for (int i = 0; i < methods.length; i++) {
ResolvedMember method = methods[i];
if (method.getName().equals("")) {
if (method.getKind() != Member.STATIC_INITIALIZATION) {
throw new RuntimeException("qui?");
}
hasClinit = true;
}
}
// Do we need to calculate an SUID and add it?
if (!getType().isInterface() && !hasSerialVersionUIDField && world.isAddSerialVerUID()) {
calculatedSerialVersionUID = myGen.getSUID();
FieldGen fg = new FieldGen(Constants.ACC_PRIVATE | Constants.ACC_FINAL | Constants.ACC_STATIC, BasicType.LONG,
"serialVersionUID", getConstantPool());
addField(fg);
hasSerialVersionUIDField = true;
serialVersionUIDRequiresInitialization = true;
// warn about what we've done?
if (world.getLint().calculatingSerialVersionUID.isEnabled()) {
world.getLint().calculatingSerialVersionUID.signal(
new String[] { getClassName(), Long.toString(calculatedSerialVersionUID) + "L" }, null, null);
}
}
}
ResolvedMember[] methods = myType.getDeclaredMethods();
for (int i = 0; i < methods.length; i++) {
addMethodGen(new LazyMethodGen((BcelMethod) methods[i], this));
}
// Method[] methods = myGen.getMethods();
// for (int i = 0; i < methods.length; i++) {
// addMethodGen(new LazyMethodGen(methods[i], this));
// }
ResolvedMember[] fields = myType.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
this.fields.add((BcelField) fields[i]);
}
}
public static boolean hasSerialVersionUIDField(ResolvedType type) {
ResolvedMember[] fields = type.getDeclaredFields();
for (int i = 0; i < fields.length; i++) {
ResolvedMember field = fields[i];
if (field.getName().equals("serialVersionUID") && Modifier.isStatic(field.getModifiers())
&& field.getType().equals(UnresolvedType.LONG)) {
return true;
}
}
return false;
}
// public void addAttribute(Attribute i) {
// myGen.addAttribute(i);
// }
// ----
public String getInternalClassName() {
return getConstantPool().getConstantString_CONSTANTClass(myGen.getClassNameIndex());
// getConstantPool().getConstantString(
// myGen.getClassNameIndex(),
// Constants.CONSTANT_Class);
}
public String getInternalFileName() {
String str = getInternalClassName();
int index = str.lastIndexOf('/');
if (index == -1) {
return getFileName();
} else {
return str.substring(0, index + 1) + getFileName();
}
}
/**
* Returns the packagename - if its the default package we return an empty string
*/
public String getPackageName() {
if (packageName != null) {
return packageName;
}
String str = getInternalClassName();
int index = str.indexOf("<");
if (index != -1) {
str = str.substring(0, index); // strip off the generics guff
}
index = str.lastIndexOf("/");
if (index == -1) {
return "";
}
return str.substring(0, index).replace('/', '.');
}
public void addMethodGen(LazyMethodGen gen) {
// assert gen.getClassName() == super.getClassName();
methodGens.add(gen);
if (highestLineNumber < gen.highestLineNumber) {
highestLineNumber = gen.highestLineNumber;
}
}
public boolean removeMethodGen(LazyMethodGen gen) {
return methodGens.remove(gen);
}
public void addMethodGen(LazyMethodGen gen, ISourceLocation sourceLocation) {
addMethodGen(gen);
if (!gen.getMethod().isPrivate()) {
warnOnAddedMethod(gen.getMethod(), sourceLocation);
}
}
public void errorOnAddedField(FieldGen field, ISourceLocation sourceLocation) {
if (isSerializable && !hasSerialVersionUIDField) {
getWorld().getLint().serialVersionUIDBroken.signal(
new String[] { myType.getResolvedTypeX().getName(), field.getName() }, sourceLocation, null);
}
}
public void warnOnAddedInterface(String name, ISourceLocation sourceLocation) {
warnOnModifiedSerialVersionUID(sourceLocation, "added interface " + name);
}
public void warnOnAddedMethod(Method method, ISourceLocation sourceLocation) {
warnOnModifiedSerialVersionUID(sourceLocation, "added non-private method " + method.getName());
}
public void warnOnAddedStaticInitializer(Shadow shadow, ISourceLocation sourceLocation) {
if (!hasClinit) {
warnOnModifiedSerialVersionUID(sourceLocation, "added static initializer");
}
}
public void warnOnModifiedSerialVersionUID(ISourceLocation sourceLocation, String reason) {
if (isSerializable && !hasSerialVersionUIDField) {
getWorld().getLint().needsSerialVersionUIDField.signal(new String[] { myType.getResolvedTypeX().getName().toString(),
reason }, sourceLocation, null);
}
}
public World getWorld() {
return world;
}
public List getMethodGens() {
return methodGens; // ???Collections.unmodifiableList(methodGens);
}
public List getFieldGens() {
return fields;
}
public boolean fieldExists(String name) {
// Field[] allFields = myGen.getFields();
// if (allFields!=null) {
// for (int i=0;i Short.MAX_VALUE) {
reportClassTooBigProblem();
return;
}
if (annotations.size() > 0) {
for (AnnotationGen element : annotations) {
myGen.addAnnotation(element);
}
// Attribute[] annAttributes =
// org.aspectj.apache.bcel.classfile.Utility.getAnnotationAttributes(
// getConstantPool(),annotations);
// for (int i = 0; i < annAttributes.length; i++) {
// Attribute attribute = annAttributes[i];
// System.err.println("Adding attribute for "+attribute);
// myGen.addAttribute(attribute);
// }
}
// Add a weaver version attribute to the file being produced (if
// necessary...)
if (!myGen.hasAttribute("org.aspectj.weaver.WeaverVersion")) {
myGen.addAttribute(Utility.bcelAttribute(new AjAttribute.WeaverVersionInfo(), getConstantPool()));
}
// 352389: don't add another one (there will already be one there and this new one won't deserialize correctly)
if (!world.isOverWeaving() || !myGen.hasAttribute(WeaverState.AttributeName)) {
if (myType != null && myType.getWeaverState() != null) {
myGen.addAttribute(Utility.bcelAttribute(new AjAttribute.WeaverState(myType.getWeaverState()), getConstantPool()));
}
}
// FIXME ATAJ needed only for slow Aspects.aspectOf() - keep or remove
// make a lot of test fail since the test compare weaved class file
// based on some test data as text files...
// if (!myGen.isInterface()) {
// addAjClassField();
// }
addAjcInitializers();
// 17Feb05 - ASC - Skip this for now - it crashes IBM 1.4.2 jvms
// (pr80430). Will be revisited when contents
// of attribute are confirmed to be correct.
boolean sourceDebugExtensionSupportSwitchedOn = false;
if (sourceDebugExtensionSupportSwitchedOn) {
calculateSourceDebugExtensionOffsets();
}
int len = methodGens.size();
myGen.setMethods(Method.NoMethods);
for (LazyMethodGen gen : methodGens) {
// we skip empty clinits
if (isEmptyClinit(gen)) {
continue;
}
myGen.addMethod(gen.getMethod());
}
len = fields.size();
myGen.setFields(Field.NoFields);
for (int i = 0; i < len; i++) {
BcelField gen = fields.get(i);
myGen.addField(gen.getField(cp));
}
if (sourceDebugExtensionSupportSwitchedOn) {
if (inlinedFiles.size() != 0) {
if (hasSourceDebugExtensionAttribute(myGen)) {
world.showMessage(IMessage.WARNING, WeaverMessages.format(WeaverMessages.OVERWRITE_JSR45, getFileName()), null,
null);
}
// myGen.addAttribute(getSourceDebugExtensionAttribute());
}
}
fixupGenericSignatureAttribute();
}
/**
* When working with Java generics, a signature attribute is attached to the type which indicates how it was declared. This
* routine ensures the signature attribute for the class we are about to write out is correct. Basically its responsibilities
* are:
*
* -
* Checking whether the attribute needs changing (ie. did weaving change the type hierarchy) - if it did, remove the old
* attribute
*
-
* Check if we need an attribute at all, are we generic? are our supertypes parameterized/generic?
*
-
* Build the new attribute which includes all typevariable, supertype and superinterface information
*
*/
private void fixupGenericSignatureAttribute() {
if (getWorld() != null && !getWorld().isInJava5Mode()) {
return;
}
// TODO asc generics Temporarily assume that types we generate dont need
// a signature attribute (closure/etc).. will need
// revisiting no doubt...
// if (myType == null) {
// return;
// }
// 1. Has anything changed that would require us to modify this
// attribute?
if (!regenerateGenericSignatureAttribute) {
return;
}
// 2. Find the old attribute
Signature sigAttr = null;
if (myType != null) { // if null, this is a type built from scratch, it
// won't already have a sig attribute
sigAttr = (Signature) myGen.getAttribute("Signature");
}
// 3. Do we need an attribute?
boolean needAttribute = false;
// If we had one before, we definetly still need one as types can't be
// 'removed' from the hierarchy
if (sigAttr != null) {
needAttribute = true;
}
// check the interfaces
if (!needAttribute) {
if (myType != null) {
ResolvedType[] interfaceRTXs = myType.getDeclaredInterfaces();
for (int i = 0; i < interfaceRTXs.length; i++) {
ResolvedType typeX = interfaceRTXs[i];
if (typeX.isGenericType() || typeX.isParameterizedType()) {
needAttribute = true;
}
}
if (extraSuperInterfaces != null) {
for (int i = 0; i < extraSuperInterfaces.length; i++) {
ResolvedType interfaceType = extraSuperInterfaces[i];
if (interfaceType.isGenericType() || interfaceType.isParameterizedType()) {
needAttribute = true;
}
}
}
}
if (myType == null) {
ResolvedType superclassRTX = superclass;
if (superclassRTX != null) {
if (superclassRTX.isGenericType() || superclassRTX.isParameterizedType()) {
needAttribute = true;
}
}
} else {
// check the supertype
ResolvedType superclassRTX = getSuperClass();
if (superclassRTX.isGenericType() || superclassRTX.isParameterizedType()) {
needAttribute = true;
}
}
}
if (needAttribute) {
StringBuffer signature = new StringBuffer();
// first, the type variables...
if (myType != null) {
TypeVariable[] tVars = myType.getTypeVariables();
if (tVars.length > 0) {
signature.append("<");
for (int i = 0; i < tVars.length; i++) {
TypeVariable variable = tVars[i];
signature.append(variable.getSignatureForAttribute());
}
signature.append(">");
}
}
// now the supertype
String supersig = getSuperClass().getSignatureForAttribute();
signature.append(supersig);
if (myType != null) {
ResolvedType[] interfaceRTXs = myType.getDeclaredInterfaces();
for (int i = 0; i < interfaceRTXs.length; i++) {
String s = interfaceRTXs[i].getSignatureForAttribute();
signature.append(s);
}
if (extraSuperInterfaces != null) {
for (int i = 0; i < extraSuperInterfaces.length; i++) {
String s = extraSuperInterfaces[i].getSignatureForAttribute();
signature.append(s);
}
}
}
if (sigAttr != null) {
myGen.removeAttribute(sigAttr);
}
myGen.addAttribute(createSignatureAttribute(signature.toString()));
}
}
/**
* Helper method to create a signature attribute based on a string signature: e.g. "Ljava/lang/Object;LI;"
*/
private Signature createSignatureAttribute(String signature) {
int nameIndex = cp.addUtf8("Signature");
int sigIndex = cp.addUtf8(signature);
return new Signature(nameIndex, 2, sigIndex, cp);
}
/**
*
*/
private void reportClassTooBigProblem() {
// PR 59208
// we've generated a class that is just toooooooooo big (you've been
// generating programs
// again haven't you? come on, admit it, no-one writes classes this big
// by hand).
// create an empty myGen so that we can give back a return value that
// doesn't upset the
// rest of the process.
myGen = new ClassGen(myGen.getClassName(), myGen.getSuperclassName(), myGen.getFileName(), myGen.getModifiers(),
myGen.getInterfaceNames());
// raise an error against this compilation unit.
getWorld().showMessage(IMessage.ERROR, WeaverMessages.format(WeaverMessages.CLASS_TOO_BIG, this.getClassName()),
new SourceLocation(new File(myGen.getFileName()), 0), null);
}
private static boolean hasSourceDebugExtensionAttribute(ClassGen gen) {
return gen.hasAttribute("SourceDebugExtension");
}
public JavaClass getJavaClass(BcelWorld world) {
writeBack(world);
return myGen.getJavaClass();
}
public byte[] getJavaClassBytesIncludingReweavable(BcelWorld world) {
writeBack(world);
byte[] wovenClassFileData = myGen.getJavaClass().getBytes();
// At 1.6 stackmaps are optional
// At 1.7 or later stackmaps are required (if not turning off the verifier)
if ((myGen.getMajor() == Constants.MAJOR_1_6 && world.shouldGenerateStackMaps()) || myGen.getMajor() > Constants.MAJOR_1_6) {
if (!AsmDetector.isAsmAround) {
throw new BCException("Unable to find Asm for stackmap generation (Looking for 'aj.org.objectweb.asm.ClassReader'). Stackmap generation for woven code is required to avoid verify errors on a Java 1.7 or higher runtime");
};
wovenClassFileData = StackMapAdder.addStackMaps(world, wovenClassFileData);
}
WeaverStateInfo wsi = myType.getWeaverState();// getOrCreateWeaverStateInfo();
if (wsi != null && wsi.isReweavable()) { // && !reweavableDataInserted
// reweavableDataInserted = true;
return wsi.replaceKeyWithDiff(wovenClassFileData);
} else {
return wovenClassFileData;
}
}
public void addGeneratedInner(LazyClassGen newClass) {
classGens.add(newClass);
}
public void addInterface(ResolvedType newInterface, ISourceLocation sourceLocation) {
regenerateGenericSignatureAttribute = true;
if (extraSuperInterfaces == null) {
extraSuperInterfaces = new ResolvedType[1];
extraSuperInterfaces[0] = newInterface;
} else {
ResolvedType[] x = new ResolvedType[extraSuperInterfaces.length + 1];
System.arraycopy(extraSuperInterfaces, 0, x, 1, extraSuperInterfaces.length);
x[0] = newInterface;
extraSuperInterfaces = x;
}
myGen.addInterface(newInterface.getRawName());
if (!newInterface.equals(UnresolvedType.SERIALIZABLE)) {
warnOnAddedInterface(newInterface.getName(), sourceLocation);
}
}
public void setSuperClass(ResolvedType newSuperclass) {
regenerateGenericSignatureAttribute = true;
superclass = newSuperclass;
// myType.addParent(typeX); // used for the attribute
if (newSuperclass.getGenericType() != null) {
newSuperclass = newSuperclass.getGenericType();
}
myGen.setSuperclassName(newSuperclass.getName()); // used in the real
// class data
}
// public String getSuperClassname() {
// return myGen.getSuperclassName();
// }
public ResolvedType getSuperClass() {
if (superclass != null) {
return superclass;
}
return myType.getSuperclass();
}
public String[] getInterfaceNames() {
return myGen.getInterfaceNames();
}
// non-recursive, may be a bug, ha ha.
private List getClassGens() {
List ret = new ArrayList();
ret.add(this);
ret.addAll(classGens);
return ret;
}
public List getChildClasses(BcelWorld world) {
if (classGens.isEmpty()) {
return Collections.emptyList();
}
List ret = new ArrayList();
for (LazyClassGen clazz : classGens) {
byte[] bytes = clazz.getJavaClass(world).getBytes();
String name = clazz.getName();
int index = name.lastIndexOf('$');
// XXX this could be bad, check use of dollar signs.
name = name.substring(index + 1);
ret.add(new UnwovenClassFile.ChildClass(name, bytes));
}
return ret;
}
@Override
public String toString() {
return toShortString();
}
public String toShortString() {
String s = org.aspectj.apache.bcel.classfile.Utility.accessToString(myGen.getModifiers(), true);
if (!s.equals("")) {
s += " ";
}
s += org.aspectj.apache.bcel.classfile.Utility.classOrInterface(myGen.getModifiers());
s += " ";
s += myGen.getClassName();
return s;
}
public String toLongString() {
ByteArrayOutputStream s = new ByteArrayOutputStream();
print(new PrintStream(s));
return new String(s.toByteArray());
}
public void print() {
print(System.out);
}
public void print(PrintStream out) {
List classGens = getClassGens();
for (Iterator iter = classGens.iterator(); iter.hasNext();) {
LazyClassGen element = iter.next();
element.printOne(out);
if (iter.hasNext()) {
out.println();
}
}
}
private void printOne(PrintStream out) {
out.print(toShortString());
out.print(" extends ");
out.print(org.aspectj.apache.bcel.classfile.Utility.compactClassName(myGen.getSuperclassName(), false));
int size = myGen.getInterfaces().length;
if (size > 0) {
out.print(" implements ");
for (int i = 0; i < size; i++) {
out.print(myGen.getInterfaceNames()[i]);
if (i < size - 1) {
out.print(", ");
}
}
}
out.print(":");
out.println();
// XXX make sure to pass types correctly around, so this doesn't happen.
if (myType != null) {
myType.printWackyStuff(out);
}
Field[] fields = myGen.getFields();
for (int i = 0, len = fields.length; i < len; i++) {
out.print(" ");
out.println(fields[i]);
}
List methodGens = getMethodGens();
for (Iterator iter = methodGens.iterator(); iter.hasNext();) {
LazyMethodGen gen = iter.next();
// we skip empty clinits
if (isEmptyClinit(gen)) {
continue;
}
gen.print(out, (myType != null ? myType.getWeaverVersionAttribute() : WeaverVersionInfo.UNKNOWN));
if (iter.hasNext()) {
out.println();
}
}
// out.println(" ATTRIBS: " + Arrays.asList(myGen.getAttributes()));
out.println("end " + toShortString());
}
private boolean isEmptyClinit(LazyMethodGen gen) {
if (!gen.getName().equals("")) {
return false;
}
// System.err.println("checking clinig: " + gen);
InstructionHandle start = gen.getBody().getStart();
while (start != null) {
if (Range.isRangeHandle(start) || (start.getInstruction().opcode == Constants.RETURN)) {
start = start.getNext();
} else {
return false;
}
}
return true;
}
public ConstantPool getConstantPool() {
return cp;
}
public String getName() {
return myGen.getClassName();
}
public boolean isWoven() {
return myType.getWeaverState() != null;
}
public boolean isReweavable() {
if (myType.getWeaverState() == null) {
return true;
}
return myType.getWeaverState().isReweavable();
}
public Set getAspectsAffectingType() {
if (myType.getWeaverState() == null) {
return null;
}
return myType.getWeaverState().getAspectsAffectingType();
}
public WeaverStateInfo getOrCreateWeaverStateInfo(boolean inReweavableMode) {
WeaverStateInfo ret = myType.getWeaverState();
if (ret != null) {
return ret;
}
ret = new WeaverStateInfo(inReweavableMode);
myType.setWeaverState(ret);
return ret;
}
public InstructionFactory getFactory() {
return fact;
}
public LazyMethodGen getStaticInitializer() {
for (LazyMethodGen gen : methodGens) {
// OPTIMIZE persist kind of member into the gen object? for clinit
if (gen.getName().equals("")) {
return gen;
}
}
LazyMethodGen clinit = new LazyMethodGen(Modifier.STATIC, Type.VOID, "", new Type[0], NO_STRINGS, this);
clinit.getBody().insert(InstructionConstants.RETURN);
methodGens.add(clinit);
return clinit;
}
/**
* Retrieve the ajc$preClinit method - this method captures any initialization AspectJ wants to ensure happens in a class. It is
* called from the static initializer. Maintaining this separation enables overweaving to ignore join points added due to
* earlier weaves. If the ajc$preClinit method cannot be found, it is created and a call to it is placed in the real static
* initializer (the call is placed at the start of the static initializer).
*
* @return the LazyMethodGen representing the ajc$ clinit
*/
public LazyMethodGen getAjcPreClinit() {
if (this.isInterface()) {
throw new IllegalStateException();
}
for (LazyMethodGen methodGen : methodGens) {
if (methodGen.getName().equals(NameMangler.AJC_PRE_CLINIT_NAME)) {
return methodGen;
}
}
LazyMethodGen ajcPreClinit = new LazyMethodGen(Modifier.PRIVATE | Modifier.STATIC, Type.VOID,
NameMangler.AJC_PRE_CLINIT_NAME, Type.NO_ARGS, NO_STRINGS, this);
ajcPreClinit.getBody().insert(InstructionConstants.RETURN);
methodGens.add(ajcPreClinit);
getStaticInitializer().getBody().insert(Utility.createInvoke(fact, ajcPreClinit));
return ajcPreClinit;
}
/**
* factory method for building multiple extended clinit methods. Constructs a new clinit method that invokes the previous one
* and then returns it. The index is used as a name suffix.
*
* @param previousPreClinit
* @param i
*/
public LazyMethodGen createExtendedAjcPreClinit(LazyMethodGen previousPreClinit, int i) {
LazyMethodGen ajcPreClinit = new LazyMethodGen(Modifier.PRIVATE | Modifier.STATIC, Type.VOID,
NameMangler.AJC_PRE_CLINIT_NAME + i, Type.NO_ARGS, NO_STRINGS, this);
ajcPreClinit.getBody().insert(InstructionConstants.RETURN);
methodGens.add(ajcPreClinit);
previousPreClinit.getBody().insert(Utility.createInvoke(fact, ajcPreClinit));
return ajcPreClinit;
}
//
// reflective thisJoinPoint support
private Map tjpFields = new HashMap();
Map annotationCachingFieldCache = new HashMap();
private int tjpFieldsCounter = -1; // -1 means not yet initialized
private int annoFieldsCounter = 0;
public static final ObjectType proceedingTjpType = new ObjectType("org.aspectj.lang.ProceedingJoinPoint");
public static final ObjectType tjpType = new ObjectType("org.aspectj.lang.JoinPoint");
public static final ObjectType staticTjpType = new ObjectType("org.aspectj.lang.JoinPoint$StaticPart");
public static final ObjectType typeForAnnotation = new ObjectType("java.lang.annotation.Annotation");
public static final ObjectType enclosingStaticTjpType = new ObjectType("org.aspectj.lang.JoinPoint$EnclosingStaticPart");
private static final ObjectType sigType = new ObjectType("org.aspectj.lang.Signature");
// private static final ObjectType slType =
// new ObjectType("org.aspectj.lang.reflect.SourceLocation");
private static final ObjectType factoryType = new ObjectType("org.aspectj.runtime.reflect.Factory");
private static final ObjectType classType = new ObjectType("java.lang.Class");
public Field getTjpField(BcelShadow shadow, final boolean isEnclosingJp) {
Field tjpField = tjpFields.get(shadow);
if (tjpField != null) {
return tjpField;
}
int modifiers = Modifier.STATIC;
// J9: Can't always be final on Java 9 because it is set outside of clinit
// But must be final in interface
if (shadow.getEnclosingClass().isInterface()) {
modifiers |= Modifier.FINAL;
}
// XXX - Do we ever inline before or after advice? If we do, then we
// better include them in the check below. (or just change it to
// shadow.getEnclosingMethod().getCanInline())
// If the enclosing method is around advice, we could inline the join
// point that has led to this shadow. If we do that then the TJP we are
// creating here must be PUBLIC so it is visible to the type in which the
// advice is inlined. (PR71377)
LazyMethodGen encMethod = shadow.getEnclosingMethod();
boolean shadowIsInAroundAdvice = false;
if (encMethod != null && encMethod.getName().startsWith(NameMangler.PREFIX + "around")) {
shadowIsInAroundAdvice = true;
}
if (getType().isInterface() || shadowIsInAroundAdvice) {
modifiers |= Modifier.PUBLIC;
} else {
modifiers |= Modifier.PRIVATE;
}
ObjectType jpType = null;
// Did not have different static joinpoint types in 1.2
if (world.isTargettingAspectJRuntime12()) {
jpType = staticTjpType;
} else {
jpType = isEnclosingJp ? enclosingStaticTjpType : staticTjpType;
}
if (tjpFieldsCounter == -1) {
// not yet initialized, do it now
if (!world.isOverWeaving()) {
tjpFieldsCounter = 0;
} else {
List existingFields = getFieldGens();
if (existingFields == null) {
tjpFieldsCounter = 0;
} else {
BcelField lastField = null;
// OPTIMIZE: go from last to first?
for (BcelField field : existingFields) {
if (field.getName().startsWith("ajc$tjp_")) {
lastField = field;
}
}
if (lastField == null) {
tjpFieldsCounter = 0;
} else {
tjpFieldsCounter = Integer.parseInt(lastField.getName().substring(8)) + 1;
// System.out.println("tjp counter starting at " + tjpFieldsCounter);
}
}
}
}
if (!isInterface() && world.isTransientTjpFields()) {
modifiers|=Modifier.TRANSIENT;
}
FieldGen fGen = new FieldGen(modifiers, jpType, "ajc$tjp_" + tjpFieldsCounter++, getConstantPool());
addField(fGen);
tjpField = fGen.getField();
tjpFields.put(shadow, tjpField);
return tjpField;
}
/**
* Create a field in the type containing the shadow where the annotation retrieved during binding can be stored - for later fast
* access.
*
* @param shadow the shadow at which the @annotation result is being cached
* @return a field
*/
public Field getAnnotationCachingField(BcelShadow shadow, ResolvedType toType, boolean isWithin) {
// Multiple annotation types at a shadow. A different field would be required for each
CacheKey cacheKey = new CacheKey(shadow, toType, isWithin);
Field field = annotationCachingFieldCache.get(cacheKey);
// System.out.println(field + " for shadow " + shadow);
if (field == null) {
// private static Annotation ajc$anno$
StringBuilder sb = new StringBuilder();
sb.append(NameMangler.ANNOTATION_CACHE_FIELD_NAME);
sb.append(annoFieldsCounter++);
FieldGen annotationCacheField = new FieldGen(Modifier.PRIVATE | Modifier.STATIC, typeForAnnotation, sb.toString(), cp);
addField(annotationCacheField);
field = annotationCacheField.getField();
annotationCachingFieldCache.put(cacheKey, field);
}
return field;
}
static class CacheKey {
private Object key;
private ResolvedType annotationType;
// If the annotation is being accessed via @annotation on a shadow then we can use the shadows toString() (so two shadows
// the same share a variable), but if it is @withincode() or @within() we can't share them (as the shadows may look the same
// but be occurring 'within' different things). In the within cases we continue to use the shadow itself as the key.
CacheKey(BcelShadow shadow, ResolvedType annotationType, boolean isWithin) {
this.key = isWithin ? shadow : shadow.toString();
this.annotationType = annotationType;
}
@Override
public int hashCode() {
return key.hashCode() * 37 + annotationType.hashCode();
}
@Override
public boolean equals(Object other) {
if (!(other instanceof CacheKey)) {
return false;
}
CacheKey oCacheKey = (CacheKey) other;
return key.equals(oCacheKey.key) && annotationType.equals(oCacheKey.annotationType);
}
}
// FIXME ATAJ needed only for slow Aspects.aspectOf - keep or remove
// private void addAjClassField() {
// // Andy: Why build it again??
// Field ajClassField = new FieldGen(
// Modifier.PRIVATE | Modifier.FINAL | Modifier.STATIC,
// classType,
// "aj$class",
// getConstantPool()).getField();
// addField(ajClassField);
//
// InstructionList il = new InstructionList();
// il.append(new PUSH(getConstantPool(), getClassName()));
// il.append(fact.createInvoke("java.lang.Class", "forName", classType,
// new Type[] {Type.STRING}, Constants.INVOKESTATIC));
// il.append(fact.createFieldAccess(getClassName(), ajClassField.getName(),
// classType, Constants.PUTSTATIC));
//
// getStaticInitializer().getBody().insert(il);
// }
private void addAjcInitializers() {
if (tjpFields.size() == 0 && !serialVersionUIDRequiresInitialization) {
return;
}
InstructionList[] il = null;
if (tjpFields.size() > 0) {
il = initializeAllTjps();
}
if (serialVersionUIDRequiresInitialization) {
InstructionList[] ilSVUID = new InstructionList[1];
ilSVUID[0] = new InstructionList();
ilSVUID[0].append(InstructionFactory.PUSH(getConstantPool(), calculatedSerialVersionUID));
ilSVUID[0].append(getFactory().createFieldAccess(getClassName(), "serialVersionUID", BasicType.LONG,
Constants.PUTSTATIC));
if (il == null) {
il = ilSVUID;
} else {
InstructionList[] newIl = new InstructionList[il.length + ilSVUID.length];
System.arraycopy(il, 0, newIl, 0, il.length);
System.arraycopy(ilSVUID, 0, newIl, il.length, ilSVUID.length);
il = newIl;
}
}
LazyMethodGen prevMethod;
LazyMethodGen nextMethod = null;
if (this.isInterface()) { // Cannot sneak stuff into another static method in an interface
prevMethod = getStaticInitializer();
} else {
prevMethod = getAjcPreClinit();
}
for (int counter = 1; counter <= il.length; counter++) {
if (il.length > counter) {
nextMethod = createExtendedAjcPreClinit(prevMethod, counter);
}
prevMethod.getBody().insert(il[counter - 1]);
prevMethod = nextMethod;
}
}
private InstructionList initInstructionList() {
InstructionList list = new InstructionList();
InstructionFactory fact = getFactory();
// make a new factory
list.append(fact.createNew(factoryType));
list.append(InstructionFactory.createDup(1));
list.append(InstructionFactory.PUSH(getConstantPool(), getFileName()));
// load the current Class object
// XXX check that this works correctly for inners/anonymous
list.append(fact.PUSHCLASS(cp, myGen.getClassName()));
// XXX do we need to worry about the fact the theorectically this could
// throw
// a ClassNotFoundException
list.append(fact.createInvoke(factoryType.getClassName(), "", Type.VOID, new Type[] { Type.STRING, classType },
Constants.INVOKESPECIAL));
list.append(InstructionFactory.createStore(factoryType, 0));
return list;
}
private InstructionList[] initializeAllTjps() {
Vector lists = new Vector();
InstructionList list = initInstructionList();
lists.add(list);
List> entries = new ArrayList>(tjpFields.entrySet());
Collections.sort(entries, new Comparator>() {
@Override
public int compare(Map.Entry a, Map.Entry b) {
return (a.getValue()).getName().compareTo((b.getValue()).getName());
}
});
long estimatedSize = 0;
for (Iterator> i = entries.iterator(); i.hasNext();) {
Map.Entry entry = i.next();
if (estimatedSize > Constants.MAX_CODE_SIZE) {
estimatedSize = 0;
list = initInstructionList();
lists.add(list);
}
estimatedSize += entry.getValue().getSignature().getBytes().length;
initializeTjp(fact, list, entry.getValue(), entry.getKey());
}
InstructionList listArrayModel[] = new InstructionList[1];
return lists.toArray(listArrayModel);
}
private void initializeTjp(InstructionFactory fact, InstructionList list, Field field, BcelShadow shadow) {
if (world.getTargetAspectjRuntimeLevel() == RuntimeVersion.V1_9) {
initializeTjpOptimal(fact, list, field, shadow);
return;
}
boolean fastSJP = false;
// avoid fast SJP if it is for an enclosing joinpoint
boolean isFastSJPAvailable = shadow.getWorld().isTargettingRuntime1_6_10()
&& !enclosingStaticTjpType.equals(field.getType());
Member sig = shadow.getSignature();
// load the factory
list.append(InstructionFactory.createLoad(factoryType, 0));
// load the kind
list.append(InstructionFactory.PUSH(getConstantPool(), shadow.getKind().getName()));
// create the signature
if (world.isTargettingAspectJRuntime12() || !isFastSJPAvailable || !sig.getKind().equals(Member.METHOD)) {
list.append(InstructionFactory.createLoad(factoryType, 0));
}
String signatureMakerName = SignatureUtils.getSignatureMakerName(sig);
ObjectType signatureType = new ObjectType(SignatureUtils.getSignatureType(sig));
UnresolvedType[] exceptionTypes = null;
if (world.isTargettingAspectJRuntime12()) { // TAG:SUPPORTING12: We didn't have optimized factory methods in 1.2
list.append(InstructionFactory.PUSH(cp, SignatureUtils.getSignatureString(sig, shadow.getWorld())));
list.append(fact.createInvoke(factoryType.getClassName(), signatureMakerName, signatureType, Type.STRINGARRAY1,
Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.METHOD)) {
BcelWorld w = shadow.getWorld();
// For methods, push the parts of the signature on.
list.append(InstructionFactory.PUSH(cp, makeString(sig.getModifiers(w))));
list.append(InstructionFactory.PUSH(cp, sig.getName()));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getDeclaringType())));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getParameterTypes())));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getParameterNames(w))));
exceptionTypes = sig.getExceptions(w);
if (isFastSJPAvailable && exceptionTypes.length == 0) {
fastSJP = true;
} else {
list.append(InstructionFactory.PUSH(cp, makeString(exceptionTypes)));
}
list.append(InstructionFactory.PUSH(cp, makeString(sig.getReturnType())));
// And generate a call to the variant of makeMethodSig() that takes the strings
if (isFastSJPAvailable) {
fastSJP = true;
} else {
list.append(fact.createInvoke(factoryType.getClassName(), signatureMakerName, signatureType, Type.STRINGARRAY7,
Constants.INVOKEVIRTUAL));
}
} else if (sig.getKind().equals(Member.MONITORENTER)) {
list.append(InstructionFactory.PUSH(cp, makeString(sig.getDeclaringType())));
list.append(fact.createInvoke(factoryType.getClassName(), signatureMakerName, signatureType, Type.STRINGARRAY1,
Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.MONITOREXIT)) {
list.append(InstructionFactory.PUSH(cp, makeString(sig.getDeclaringType())));
list.append(fact.createInvoke(factoryType.getClassName(), signatureMakerName, signatureType, Type.STRINGARRAY1,
Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.HANDLER)) {
BcelWorld w = shadow.getWorld();
list.append(InstructionFactory.PUSH(cp, makeString(sig.getDeclaringType())));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getParameterTypes())));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getParameterNames(w))));
list.append(fact.createInvoke(factoryType.getClassName(), signatureMakerName, signatureType, Type.STRINGARRAY3,
Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.CONSTRUCTOR)) {
BcelWorld w = shadow.getWorld();
if (w.isJoinpointArrayConstructionEnabled() && sig.getDeclaringType().isArray()) {
// its the magical new jp
list.append(InstructionFactory.PUSH(cp, makeString(Modifier.PUBLIC)));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getDeclaringType())));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getParameterTypes())));
list.append(InstructionFactory.PUSH(cp, "")); // sig.getParameterNames?
list.append(InstructionFactory.PUSH(cp, ""));// sig.getExceptions?
list.append(fact.createInvoke(factoryType.getClassName(), signatureMakerName, signatureType, Type.STRINGARRAY5,
Constants.INVOKEVIRTUAL));
} else {
list.append(InstructionFactory.PUSH(cp, makeString(sig.getModifiers(w))));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getDeclaringType())));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getParameterTypes())));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getParameterNames(w))));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getExceptions(w))));
list.append(fact.createInvoke(factoryType.getClassName(), signatureMakerName, signatureType, Type.STRINGARRAY5,
Constants.INVOKEVIRTUAL));
}
} else if (sig.getKind().equals(Member.FIELD)) {
BcelWorld w = shadow.getWorld();
list.append(InstructionFactory.PUSH(cp, makeString(sig.getModifiers(w))));
list.append(InstructionFactory.PUSH(cp, sig.getName()));
// see pr227401
UnresolvedType dType = sig.getDeclaringType();
if (dType.getTypekind() == TypeKind.PARAMETERIZED || dType.getTypekind() == TypeKind.GENERIC) {
dType = sig.getDeclaringType().resolve(world).getGenericType();
}
list.append(InstructionFactory.PUSH(cp, makeString(dType)));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getReturnType())));
list.append(fact.createInvoke(factoryType.getClassName(), signatureMakerName, signatureType, Type.STRINGARRAY4,
Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.ADVICE)) {
BcelWorld w = shadow.getWorld();
list.append(InstructionFactory.PUSH(cp, makeString(sig.getModifiers(w))));
list.append(InstructionFactory.PUSH(cp, sig.getName()));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getDeclaringType())));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getParameterTypes())));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getParameterNames(w))));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getExceptions(w))));
list.append(InstructionFactory.PUSH(cp, makeString((sig.getReturnType()))));
list.append(fact.createInvoke(factoryType.getClassName(), signatureMakerName, signatureType, new Type[] { Type.STRING,
Type.STRING, Type.STRING, Type.STRING, Type.STRING, Type.STRING, Type.STRING }, Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.STATIC_INITIALIZATION)) {
BcelWorld w = shadow.getWorld();
list.append(InstructionFactory.PUSH(cp, makeString(sig.getModifiers(w))));
list.append(InstructionFactory.PUSH(cp, makeString(sig.getDeclaringType())));
list.append(fact.createInvoke(factoryType.getClassName(), signatureMakerName, signatureType, Type.STRINGARRAY2,
Constants.INVOKEVIRTUAL));
} else {
// TODO looks like this block is unused code
list.append(InstructionFactory.PUSH(cp, SignatureUtils.getSignatureString(sig, shadow.getWorld())));
list.append(fact.createInvoke(factoryType.getClassName(), signatureMakerName, signatureType, Type.STRINGARRAY1,
Constants.INVOKEVIRTUAL));
}
// XXX should load source location from shadow
list.append(Utility.createConstant(fact, shadow.getSourceLine()));
final String factoryMethod;
// TAG:SUPPORTING12: We didn't have makeESJP() in 1.2
if (world.isTargettingAspectJRuntime12()) {
list.append(fact.createInvoke(factoryType.getClassName(), "makeSJP", staticTjpType, new Type[] { Type.STRING, sigType,
Type.INT }, Constants.INVOKEVIRTUAL));
// put it in the field
list.append(fact.createFieldAccess(getClassName(), field.getName(), staticTjpType, Constants.PUTSTATIC));
} else {
if (staticTjpType.equals(field.getType())) {
factoryMethod = "makeSJP";
} else if (enclosingStaticTjpType.equals(field.getType())) {
factoryMethod = "makeESJP";
} else {
throw new Error("should not happen");
}
if (fastSJP) {
if (exceptionTypes != null && exceptionTypes.length != 0) {
list.append(fact.createInvoke(factoryType.getClassName(), factoryMethod, field.getType(), ARRAY_8STRING_INT,
Constants.INVOKEVIRTUAL));
} else {
list.append(fact.createInvoke(factoryType.getClassName(), factoryMethod, field.getType(), ARRAY_7STRING_INT,
Constants.INVOKEVIRTUAL));
}
} else {
list.append(fact.createInvoke(factoryType.getClassName(), factoryMethod, field.getType(), new Type[] { Type.STRING,
sigType, Type.INT }, Constants.INVOKEVIRTUAL));
}
// put it in the field
list.append(fact.createFieldAccess(getClassName(), field.getName(), field.getType(), Constants.PUTSTATIC));
}
}
public String getFactoryMethod(Field field, BcelShadow shadow) {
StringBuilder b = new StringBuilder();
b.append("make");
MemberKind kind = shadow.getSignature().getKind();
if (kind.equals(Member.METHOD)) {
b.append("Method");
} else if (kind.equals(Member.CONSTRUCTOR)) {
b.append("Constructor");
} else if (kind.equals(Member.HANDLER)) {
b.append("CatchClause");
} else if (kind.equals(Member.FIELD)) {
b.append("Field");
} else if (kind.equals(Member.STATIC_INITIALIZATION)) {
b.append("Initializer");
} else if (kind.equals(Member.MONITORENTER)) {
b.append("Lock");
} else if (kind.equals(Member.MONITOREXIT)) {
b.append("Unlock");
} else if (kind.equals(Member.ADVICE)) {
b.append("Advice");
} else {
throw new IllegalStateException(kind.toString());
}
if (staticTjpType.equals(field.getType())) {
b.append("SJP");
} else if (enclosingStaticTjpType.equals(field.getType())) {
b.append("ESJP");
}
return b.toString();
}
/**
* Generate optimal joinpoint initialization code.
*
* As of version 1.9.1 the runtime includes new factory methods for joinpoints that take classes, not strings
* and using them requires different code generation. Using these instead of the old ones means we can avoid
* deferred classloading for these types. By using the LDC instruction that loads classes, it also means
* anything modifying woven code and changing type names will also pick up on these references.
*/
private void initializeTjpOptimal(InstructionFactory fact, InstructionList list, Field field, BcelShadow shadow) {
list.append(InstructionFactory.createLoad(factoryType, 0));
pushString(list, shadow.getKind().getName());
String factoryMethod = getFactoryMethod(field, shadow);
Member sig = shadow.getSignature();
BcelWorld w = shadow.getWorld();
if (sig.getKind().equals(Member.METHOD)) {
pushInt(list, sig.getModifiers(w));
pushString(list, sig.getName());
pushClass(list, sig.getDeclaringType());
pushClasses(list, sig.getParameterTypes());
pushStrings(list, sig.getParameterNames(w));
pushClasses(list, sig.getExceptions(w));
pushClass(list, sig.getReturnType());
pushInt(list, shadow.getSourceLine());
list.append(fact.createInvoke(factoryType.getClassName(), factoryMethod, field.getType(),
PARAMSIGNATURE_MAKESJP_METHOD, Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.CONSTRUCTOR)) {
if (w.isJoinpointArrayConstructionEnabled() && sig.getDeclaringType().isArray()) {
pushInt(list, Modifier.PUBLIC);
pushClass(list, sig.getDeclaringType());
pushClasses(list, sig.getParameterTypes());
pushStrings(list, null);
pushClasses(list, null);
} else {
pushInt(list, sig.getModifiers(w));
pushClass(list, sig.getDeclaringType());
pushClasses(list, sig.getParameterTypes());
pushStrings(list, sig.getParameterNames(w));
pushClasses(list, sig.getExceptions(w));
}
pushInt(list, shadow.getSourceLine());
list.append(fact.createInvoke(factoryType.getClassName(), factoryMethod, field.getType(),
PARAMSIGNATURE_MAKESJP_CONSTRUCTOR, Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.HANDLER)) {
pushClass(list, sig.getDeclaringType());
pushClass(list, sig.getParameterTypes()[0]);
String pname = null;
String[] pnames = sig.getParameterNames(w);
if (pnames != null && pnames.length>0) {
pname = pnames[0];
}
pushString(list, pname);
pushInt(list, shadow.getSourceLine());
list.append(fact.createInvoke(factoryType.getClassName(), factoryMethod, field.getType(),
PARAMSIGNATURE_MAKESJP_CATCHCLAUSE, Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.FIELD)) {
pushInt(list, sig.getModifiers(w));
pushString(list, sig.getName());
// see pr227401
UnresolvedType dType = sig.getDeclaringType();
if (dType.getTypekind() == TypeKind.PARAMETERIZED || dType.getTypekind() == TypeKind.GENERIC) {
dType = sig.getDeclaringType().resolve(world).getGenericType();
}
pushClass(list, dType);
pushClass(list, sig.getReturnType());
pushInt(list,shadow.getSourceLine());
list.append(fact.createInvoke(factoryType.getClassName(), factoryMethod, field.getType(),
PARAMSIGNATURE_MAKESJP_FIELD, Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.STATIC_INITIALIZATION)) {
pushInt(list, sig.getModifiers(w));
pushClass(list, sig.getDeclaringType());
pushInt(list, shadow.getSourceLine());
list.append(fact.createInvoke(factoryType.getClassName(), factoryMethod, field.getType(),
PARAMSIGNATURE_MAKESJP_INITIALIZER, Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.MONITORENTER)) {
pushClass(list, sig.getDeclaringType());
pushInt(list, shadow.getSourceLine());
list.append(fact.createInvoke(factoryType.getClassName(), factoryMethod, field.getType(),
PARAMSIGNATURE_MAKESJP_MONITOR, Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.MONITOREXIT)) {
pushClass(list, sig.getDeclaringType());
pushInt(list, shadow.getSourceLine());
list.append(fact.createInvoke(factoryType.getClassName(), factoryMethod, field.getType(),
PARAMSIGNATURE_MAKESJP_MONITOR, Constants.INVOKEVIRTUAL));
} else if (sig.getKind().equals(Member.ADVICE)) {
pushInt(list, sig.getModifiers(w));
pushString(list, sig.getName());
pushClass(list, sig.getDeclaringType());
pushClasses(list, sig.getParameterTypes());
pushStrings(list, sig.getParameterNames(w));
pushClasses(list, sig.getExceptions(w));
pushClass(list, sig.getReturnType());
pushInt(list, shadow.getSourceLine());
list.append(fact.createInvoke(factoryType.getClassName(), factoryMethod, field.getType(),
PARAMSIGNATURE_MAKESJP_ADVICE, Constants.INVOKEVIRTUAL));
} else {
throw new IllegalStateException("not sure what to do: "+shadow);
}
list.append(fact.createFieldAccess(getClassName(), field.getName(), field.getType(), Constants.PUTSTATIC));
}
private void pushStrings(InstructionList list, String[] strings) {
// Build an array loaded with the strings
if (strings == null || strings.length == 0) {
list.append(InstructionFactory.ACONST_NULL);
} else {
list.append(InstructionFactory.PUSH(cp, strings.length));
list.append(fact.createNewArray(Type.STRING, (short)1));
for (int s=0;s 0) {
buf.append(':');
}
buf.append(makeString(types[i]));
}
return buf.toString();
}
protected String makeString(String[] names) {
if (names == null) {
return "";
}
StringBuilder buf = new StringBuilder();
for (int i = 0, len = names.length; i < len; i++) {
if (i > 0) {
buf.append(':');
}
buf.append(names[i]);
}
return buf.toString();
}
public ResolvedType getType() {
if (myType == null) {
return null;
}
return myType.getResolvedTypeX();
}
public BcelObjectType getBcelObjectType() {
return myType;
}
public String getFileName() {
return myGen.getFileName();
}
// for *new* fields
private void addField(FieldGen field) {
makeSyntheticAndTransientIfNeeded(field);
BcelField bcelField = null;
if (getBcelObjectType() != null) {
bcelField = new BcelField(getBcelObjectType(), field.getField());
} else {
bcelField = new BcelField(getName(), field.getField(), world);
}
fields.add(bcelField);
// myGen.addField(field.getField());
}
private void makeSyntheticAndTransientIfNeeded(FieldGen field) {
if (field.getName().startsWith(NameMangler.PREFIX) && !field.getName().startsWith("ajc$interField$")
&& !field.getName().startsWith("ajc$instance$")) {
// it's an aj added field
// first do transient
if (!field.isStatic()) {
field.setModifiers(field.getModifiers() | Constants.ACC_TRANSIENT);
}
// then do synthetic
if (getWorld().isInJava5Mode()) {
// add the synthetic modifier flag
field.setModifiers(field.getModifiers() | ACC_SYNTHETIC);
}
if (!hasSyntheticAttribute(field.getAttributes())) {
// belt and braces, do the attribute even on Java 5 in addition
// to the modifier flag
// Attribute[] oldAttrs = field.getAttributes();
// Attribute[] newAttrs = new Attribute[oldAttrs.length + 1];
// System.arraycopy(oldAttrs, 0, newAttrs, 0, oldAttrs.length);
ConstantPool cpg = myGen.getConstantPool();
int index = cpg.addUtf8("Synthetic");
Attribute synthetic = new Synthetic(index, 0, new byte[0], cpg);
field.addAttribute(synthetic);
// newAttrs[newAttrs.length - 1] = synthetic;
// field.setAttributes(newAttrs);
}
}
}
private boolean hasSyntheticAttribute(List attributes) {
for (int i = 0; i < attributes.size(); i++) {
if ((attributes.get(i)).getName().equals("Synthetic")) {
return true;
}
}
return false;
}
public void addField(FieldGen field, ISourceLocation sourceLocation) {
addField(field);
if (!(field.isPrivate() && (field.isStatic() || field.isTransient()))) {
errorOnAddedField(field, sourceLocation);
}
}
public String getClassName() {
return myGen.getClassName();
}
public boolean isInterface() {
return myGen.isInterface();
}
public boolean isAbstract() {
return myGen.isAbstract();
}
public LazyMethodGen getLazyMethodGen(Member m) {
return getLazyMethodGen(m.getName(), m.getSignature(), false);
}
public LazyMethodGen getLazyMethodGen(String name, String signature) {
return getLazyMethodGen(name, signature, false);
}
public LazyMethodGen getLazyMethodGen(String name, String signature, boolean allowMissing) {
for (LazyMethodGen gen : methodGens) {
if (gen.getName().equals(name) && gen.getSignature().equals(signature)) {
return gen;
}
}
if (!allowMissing) {
throw new BCException("Class " + this.getName() + " does not have a method " + name + " with signature " + signature);
}
return null;
}
public void forcePublic() {
myGen.setModifiers(Utility.makePublic(myGen.getModifiers()));
}
public boolean hasAnnotation(UnresolvedType t) {
// annotations on the real thing
AnnotationGen agens[] = myGen.getAnnotations();
if (agens == null) {
return false;
}
for (int i = 0; i < agens.length; i++) {
AnnotationGen gen = agens[i];
if (t.equals(UnresolvedType.forSignature(gen.getTypeSignature()))) {
return true;
}
}
// annotations added during this weave
return false;
}
public void addAnnotation(AnnotationGen a) {
if (!hasAnnotation(UnresolvedType.forSignature(a.getTypeSignature()))) {
annotations.add(new AnnotationGen(a, getConstantPool(), true));
}
}
public void addAttribute(AjAttribute attribute) {
myGen.addAttribute(Utility.bcelAttribute(attribute, getConstantPool()));
}
public void addAttribute(Attribute attribute) {
myGen.addAttribute(attribute);
}
public Collection getAttributes() {
return myGen.getAttributes();
}
// this test is like asking:
// if
// (UnresolvedType.SERIALIZABLE.resolve(getType().getWorld()).isAssignableFrom
// (getType())) {
// only we don't do that because this forces us to find all the supertypes
// of the type,
// and if one of them is missing we fail, and it's not worth failing just to
// put out
// a warning message!
private boolean implementsSerializable(ResolvedType aType) {
if (aType.getSignature().equals(UnresolvedType.SERIALIZABLE.getSignature())) {
return true;
}
ResolvedType[] interfaces = aType.getDeclaredInterfaces();
for (int i = 0; i < interfaces.length; i++) {
if (interfaces[i].isMissing()) {
continue;
}
if (implementsSerializable(interfaces[i])) {
return true;
}
}
ResolvedType superType = aType.getSuperclass();
if (superType != null && !superType.isMissing()) {
return implementsSerializable(superType);
}
return false;
}
public boolean isAtLeastJava5() {
return (myGen.getMajor() >= Constants.MAJOR_1_5);
}
/**
* Return the next available field name with the specified 'prefix', e.g. for prefix 'class$' where class$0, class$1 exist then
* return class$2
*/
public String allocateField(String prefix) {
int highestAllocated = -1;
List fs = getFieldGens();
for (BcelField field : fs) {
if (field.getName().startsWith(prefix)) {
try {
int num = Integer.parseInt(field.getName().substring(prefix.length()));
if (num > highestAllocated) {
highestAllocated = num;
}
} catch (NumberFormatException nfe) {
// something wrong with the number on the end of that
// field...
}
}
}
return prefix + Integer.toString(highestAllocated + 1);
}
}