private static TemplateRenderer tryToCompile(String source, Map<String, String> expressions)
throws NotFoundException, CannotCompileException, InstantiationException,
IllegalAccessException {
ClassPool cp = ClassPool.getDefault();
CtClass sup = cp.get(Object.class.getCanonicalName());
CtClass cls = cp.makeClass("RapidoidTemplate" + ID_GEN.incrementAndGet(), sup);
cls.addInterface(cp.get(TemplateRenderer.class.getCanonicalName()));
cls.addConstructor(CtNewConstructor.defaultConstructor(cls));
for (Map.Entry<String, String> expr : expressions.entrySet()) {
String fld =
"private static final org.rapidoid.render.retriever.ValueRetriever %s = org.rapidoid.render.retriever.Retriever.of(%s);";
String retrieverId = retrieverId(expr.getKey());
String prop = expr.getValue();
String field = U.frmt(fld, retrieverId, prop);
cls.addField(CtField.make(field, cls));
}
CtClass[] params = {cp.get(RenderCtx.class.getCanonicalName())};
CtClass clsVoid = cp.get(void.class.getCanonicalName());
cls.addMethod(
CtNewMethod.make(Modifier.PUBLIC, clsVoid, "render", params, new CtClass[0], source, cls));
return (TemplateRenderer) cls.toClass().newInstance();
}
public T createJavassistProxy(
LoadBalancer loadBalance, ConcurrentMap<String, T> map, Class ifaces) throws Exception {
Class<?>[] interfaces = ifaces.getInterfaces();
if (interfaces.length == 1) {
ClassPool mPool = new ClassPool(true);
CtClass ctClass = mPool.get(interfaces[0].getName());
// 新建代理类
CtClass mCtc = mPool.makeClass(ifaces.getName() + "$JavassistProxy");
mCtc.setSuperclass(ctClass);
for (CtMethod method : ctClass.getDeclaredMethods()) {
System.out.println(method.getName());
// CtMethod m = new CtMethod(method.getReturnType(),
// ,method.getParameterTypes(), mCtc);
// cc.addMethod(m);
// m.setBody("{ x += $1; }");
mCtc.addMethod(method);
// method.setBody("");
}
// mCtc.debugWriteFile("/home/liguojun");
return null;
} else {
return null;
}
}
static void nullJavassistAdapt(ClassPool pool, final byte[] b) throws Exception {
CtClass cc = pool.makeClass(new ByteArrayInputStream(b));
CtMethod[] ms = cc.getDeclaredMethods();
for (int j = 0; j < ms.length; ++j) {
if (skipDebug) {
// is there a mean to remove the debug attributes?
}
if (compute) {
// how to force recomputation of maxStack and maxLocals?
}
}
cc.toBytecode();
}
/**
* Atm only process files annotated with either @Entity or @Embeddable
*
* @param javaClassFile
*/
private void processClassFile(File javaClassFile) {
try {
final CtClass ctClass = classPool.makeClass(new FileInputStream(javaClassFile));
if (this.isEntityClass(ctClass)) {
processEntityClassFile(javaClassFile, ctClass);
} else if (this.isCompositeClass(ctClass)) {
processCompositeClassFile(javaClassFile, ctClass);
}
} catch (IOException e) {
throw new BuildException(
String.format("Error processing included file [%s]", javaClassFile.getAbsolutePath()), e);
}
}
public static Getter generateGetter(OgnlContext context, String code) throws OgnlException {
String className = NAME_FACTORY.getNewClassName();
try {
ClassPool pool = (ClassPool) pools.get(context.getClassResolver());
EnhancedClassLoader loader = (EnhancedClassLoader) loaders.get(context.getClassResolver());
CtClass newClass;
CtClass ognlContextClass;
CtClass objectClass;
CtClass stringClass;
CtMethod method;
byte[] byteCode;
Class compiledClass;
if ((pool == null) || (loader == null)) {
ClassLoader classLoader =
new ContextClassLoader(OgnlContext.class.getClassLoader(), context);
pool = ClassPool.getDefault();
pool.insertClassPath(new LoaderClassPath(classLoader));
pools.put(context.getClassResolver(), pool);
loader = new EnhancedClassLoader(classLoader);
loaders.put(context.getClassResolver(), loader);
}
newClass = pool.makeClass(className);
ognlContextClass = pool.get(OgnlContext.class.getName());
objectClass = pool.get(Object.class.getName());
stringClass = pool.get(String.class.getName());
newClass.addInterface(pool.get(Getter.class.getName()));
method =
new CtMethod(
objectClass,
"get",
new CtClass[] {ognlContextClass, objectClass, stringClass},
newClass);
method.setBody("{" + code + "}");
newClass.addMethod(method);
byteCode = newClass.toBytecode();
compiledClass = loader.defineClass(className, byteCode);
return (Getter) compiledClass.newInstance();
} catch (Throwable ex) {
throw new OgnlException("Cannot create class", ex);
}
}
public void onWrite(ClassPool pool, String className)
throws NotFoundException, CannotCompileException {
CtClass cc = pool.get(className);
try {
if (isPersistent(className)) {
CtClass base = cc.getSuperclass();
CtConstructor cons = new CtConstructor(constructorParams, cc);
if (base.subclassOf(persistent) || base == object) {
cons.setBody(null);
cc.addConstructor(cons);
if (base == object) {
cc.setSuperclass(persistent);
}
} else {
if (!isPersistent(base.getName())) {
throw new NotFoundException(
"Base class " + base.getName() + " was not declared as persistent");
}
cons.setBody("super($0);");
cc.addConstructor(cons);
}
preprocessMethods(cc, true, true);
if (base == persistent || base == object) {
CtMethod m = new CtMethod(isRecursive, cc, null);
m.setBody("return false;");
cc.addMethod(m);
addSerializeMethods(cc, false);
} else if (base.subtypeOf(serializable)) {
addSerializeMethods(cc, true);
}
if ((cc.getModifiers() & Modifier.PRIVATE) == 0) {
CtClass f = pool.makeClass(className + "LoadFactory");
f.addInterface(factory);
CtMethod c = new CtMethod(create, f, null);
c.setBody("return new " + className + "($1);");
f.addMethod(c);
CtNewConstructor.defaultConstructor(f);
}
} else {
preprocessMethods(
cc, cc.subtypeOf(persistent) && cc != persistent, !className.startsWith("org.nachodb"));
}
} catch (Exception x) {
x.printStackTrace();
}
}
/**
* Javassist是一个开源的分析、编辑和创建Java字节码的类库。 是由东京工业大学的数学和计算机科学系的 Shigeru Chiba （千叶 滋）所创建的。它已加入了开放源代码JBoss
* 应用服务器项目, 通过使用Javassist对字节码操作为JBoss实现动态AOP框架。javassist是jboss的一个子项目.
* 其主要的优点，在于简单，而且快速。直接使用java编码的形式，而不需要了解虚拟机指令，就能动态改变类的结构，或者动态生成类。
*
* @param path
* @throws Exception
*/
public static void generateClassByJavassist(String path) throws Exception {
ClassPool pool = ClassPool.getDefault();
// 创建类
CtClass clazz = pool.makeClass("Demo");
// 创建方法
CtMethod method = CtNewMethod.make("public void call(){}", clazz);
// 插入方法代码
method.insertBefore("System.out.println(\"I'm a Programmer,Just Coding.....\");");
// 将方法添加到类中
clazz.addMethod(method);
// 将class 写入文件
clazz.writeFile(path);
}
public void rewrite(final CtClass clazz) throws CannotCompileException {
try {
ClassPool cp = ClassPool.getDefault();
byte[] b1 = clazz.toBytecode();
clazz.defrost();
ClassReader cr = new ClassReader(b1);
ClassWriter cw = new ClassWriter(0); // new ClassWriter(cr, 0);
// TraceClassVisitor ca = new TraceClassVisitor( cw, new PrintWriter(System.out, true) );
// CheckClassAdapter cca = new CheckClassAdapter(ca);
ConcurrencyControlRewriter.Adapter ca2 = new ConcurrencyControlRewriter.Adapter(cw, clazz);
cr.accept(ca2, 0);
byte[] b2 = cw.toByteArray();
cp.makeClass(new ByteArrayInputStream(b2));
} catch (IOException e) {
throw new CannotCompileException(e);
}
}
public void generateJavaClass() {
// create a cache
ClassPool pool = ClassPool.getDefault();
CtClass ctClass = pool.makeClass("com.linuxclicks.bytecode.generation.TerryJavaAssist");
CtMethod ctMethod = null;
try {
ctMethod =
CtMethod.make(
"public void sayHello() { System.out.println(\"Hello World..from the JavaAssist bytecode generator\"); }",
ctClass);
ctClass.addMethod(ctMethod);
System.out.println("writing generated JavaAssist file to filesystem");
ctClass.writeFile("./build/java/src/");
Class javaClass = ctClass.toClass();
Object terry = javaClass.newInstance();
Class partypes[] = new Class[0];
Method terrySayHelloMethod = terry.getClass().getMethod("sayHello", partypes);
Object arglist[] = new Object[0];
terrySayHelloMethod.invoke(terry, arglist);
} catch (CannotCompileException cce) {
System.out.println("cce ..." + cce);
} catch (IOException ioe) {
System.out.println("ioe ..." + ioe);
} catch (IllegalAccessException iae) {
System.out.println("iae ..." + iae);
} catch (InstantiationException ie) {
System.out.println("ie ..." + ie);
} catch (NoSuchMethodException nsme) {
System.out.println("nsme ..." + nsme);
} catch (InvocationTargetException ite) {
System.out.println("ite ..." + ite);
}
}
private void findModifierMap(ClassPool pool, String classname)
throws NotFoundException, CannotCompileException {
AbstractModifier modifier = modifierMap.get(classname);
if (modifier == null) {
return;
}
logger.info("Modify loader:{}, name:{}, modifier{}", loader, classname, modifier);
final Thread thread = Thread.currentThread();
final ClassLoader beforeClassLoader = thread.getContextClassLoader();
thread.setContextClassLoader(loader);
try {
byte[] modify = modifier.modify(this.loader, classname, null, null);
pool.makeClass(new ByteArrayInputStream(modify));
} catch (IOException ex) {
throw new NotFoundException(classname + " not found. Caused:" + ex.getMessage(), ex);
} finally {
thread.setContextClassLoader(beforeClassLoader);
}
}
@Override
public void onLoad(ClassPool pool, String classname)
throws NotFoundException, CannotCompileException {
logger.debug("loading className:{}", classname);
try {
// Find Modifier from agent and try transforming
String replace = classname.replace('.', '/');
ClassFileTransformer classFileTransformer = agent.getClassFileTransformer();
byte[] transform = classFileTransformer.transform(this.loader, replace, null, null, null);
if (transform != null) {
pool.makeClass(new ByteArrayInputStream(transform));
return;
}
} catch (IOException ex) {
throw new NotFoundException(classname + " not found. Caused:" + ex.getMessage(), ex);
} catch (IllegalClassFormatException ex) {
throw new RuntimeException(classname + " not found. Caused:" + ex.getMessage(), ex);
}
// find from modifierMap
findModifierMap(pool, classname);
}
public void start(String[] argv) {
try {
annotatedWalker = pool.makeClass("GATKSWalker" + System.currentTimeMillis());
annotatedWalker.setSuperclass(pool.get(originalWalker.getClass().getName()));
List<String> args = new ArrayList<String>();
for (String s : argv) args.add(s);
args.add("-T");
args.add(originalWalker.getClass().getName());
if (config.containsKey("bam")) {
Object bamOrBams = config.get("bam");
addBamArgs(args, bamOrBams);
}
if (config.containsKey("vcf")) {
addVCFArg(args, config.get("vcf"));
}
if (config.containsKey("out")) {
addOutputArg(args, config.get("out"));
}
if (config.containsKey("bed")) {
args.add("-L");
args.add((String) config.get("bed"));
// When the original input arguments contained a region we don't want to
// UNION the region with our VCF file, because the user is expecting it to
// constrain the walked region. Therefore as long as they didn't add
// an instruction for how to combine the region themselves,
// we add an interval-set-rule of INTERSECTION ourself
if (hasRegion && !hasISR) {
args.add("-isr");
args.add("INTERSECTION");
}
}
System.out.println("Running with arguments " + StringUtils.join(args, " "));
GATKSWalker realizedWalker = (GATKSWalker) annotatedWalker.toClass().newInstance();
realizedWalker.setMapBody(originalWalker.getMapBody());
for (String name : this.injections.keySet()) {
for (Closure c : this.injections.get(name)) {
realizedWalker.inject(name, c);
}
}
this.engine = new GATKSEngine((Walker) realizedWalker);
start(this, args.toArray(new String[args.size()]));
if (CommandLineProgram.result != 0) System.exit(CommandLineProgram.result);
} catch (UserException e) {
exitSystemWithUserError(e);
} catch (TribbleException e) {
exitSystemWithUserError(e);
} catch (PicardException e) {
exitSystemWithError(e);
} catch (SAMException e) {
exitSystemWithSamError(e);
} catch (Throwable t) {
exitSystemWithError(t);
}
}
@Override
public byte[] transform(
ClassLoader loader,
String className,
Class<?> classBeingRedefined,
ProtectionDomain protectionDomain,
byte[] classfileBuffer)
throws IllegalClassFormatException {
// Be careful with Apache library usage in this class (e.g. ArrayUtils). Usage will likely cause
// a ClassCircularityError
// under JRebel. Favor not including outside libraries and unnecessary classes.
CtClass clazz = null;
try {
boolean mySkipOverlaps = skipOverlaps;
boolean myRenameMethodOverlaps = renameMethodOverlaps;
String convertedClassName = className.replace('/', '.');
ClassPool classPool = null;
String xformKey = convertedClassName;
String[] xformVals = null;
Boolean[] xformSkipOverlaps = null;
Boolean[] xformRenameMethodOverlaps = null;
if (!xformTemplates.isEmpty()) {
if (xformTemplates.containsKey(xformKey)) {
xformVals = xformTemplates.get(xformKey).split(",");
classPool = ClassPool.getDefault();
clazz = classPool.makeClass(new ByteArrayInputStream(classfileBuffer), false);
}
} else {
if (annotationTransformedClasses.contains(convertedClassName)) {
logger.warn(
convertedClassName
+ " has already been transformed by a previous instance of DirectCopyTransfomer. "
+ "Skipping this annotation based transformation. Generally, annotation-based transformation is handled "
+ "by bean id blAnnotationDirectCopyClassTransformer with template tokens being added to "
+ "blDirectCopyTransformTokenMap via EarlyStageMergeBeanPostProcessor.");
}
boolean isValidPattern = true;
List<DirectCopyIgnorePattern> matchedPatterns = new ArrayList<DirectCopyIgnorePattern>();
for (DirectCopyIgnorePattern pattern : ignorePatterns) {
boolean isPatternMatch = false;
for (String patternString : pattern.getPatterns()) {
isPatternMatch = convertedClassName.matches(patternString);
if (isPatternMatch) {
break;
}
}
if (isPatternMatch) {
matchedPatterns.add(pattern);
}
isValidPattern = !(isPatternMatch && pattern.getTemplateTokenPatterns() == null);
if (!isValidPattern) {
return null;
}
}
if (isValidPattern) {
classPool = ClassPool.getDefault();
clazz = classPool.makeClass(new ByteArrayInputStream(classfileBuffer), false);
List<?> attributes = clazz.getClassFile().getAttributes();
Iterator<?> itr = attributes.iterator();
List<String> templates = new ArrayList<String>();
List<Boolean> skips = new ArrayList<Boolean>();
List<Boolean> renames = new ArrayList<Boolean>();
check:
{
while (itr.hasNext()) {
Object object = itr.next();
if (AnnotationsAttribute.class.isAssignableFrom(object.getClass())) {
AnnotationsAttribute attr = (AnnotationsAttribute) object;
Annotation[] items = attr.getAnnotations();
for (Annotation annotation : items) {
String typeName = annotation.getTypeName();
if (typeName.equals(DirectCopyTransform.class.getName())) {
ArrayMemberValue arrayMember =
(ArrayMemberValue) annotation.getMemberValue("value");
for (MemberValue arrayMemberValue : arrayMember.getValue()) {
AnnotationMemberValue member = (AnnotationMemberValue) arrayMemberValue;
Annotation memberAnnot = member.getValue();
ArrayMemberValue annot =
(ArrayMemberValue) memberAnnot.getMemberValue("templateTokens");
for (MemberValue memberValue : annot.getValue()) {
String val = ((StringMemberValue) memberValue).getValue();
if (val != null && templateTokens.containsKey(val)) {
templateCheck:
{
for (DirectCopyIgnorePattern matchedPattern : matchedPatterns) {
for (String ignoreToken : matchedPattern.getTemplateTokenPatterns()) {
if (val.matches(ignoreToken)) {
break templateCheck;
}
}
}
templates.add(templateTokens.get(val));
}
}
}
BooleanMemberValue skipAnnot =
(BooleanMemberValue) memberAnnot.getMemberValue("skipOverlaps");
if (skipAnnot != null) {
skips.add(skipAnnot.getValue());
} else {
skips.add(mySkipOverlaps);
}
BooleanMemberValue renameAnnot =
(BooleanMemberValue) memberAnnot.getMemberValue("renameMethodOverlaps");
if (renameAnnot != null) {
renames.add(renameAnnot.getValue());
} else {
renames.add(myRenameMethodOverlaps);
}
}
xformVals = templates.toArray(new String[templates.size()]);
xformSkipOverlaps = skips.toArray(new Boolean[skips.size()]);
xformRenameMethodOverlaps = renames.toArray(new Boolean[renames.size()]);
break check;
}
}
}
}
}
}
}
if (xformVals != null && xformVals.length > 0) {
logger.lifecycle(
LifeCycleEvent.START,
String.format(
"Transform - Copying into [%s] from [%s]",
xformKey, StringUtils.join(xformVals, ",")));
// Load the destination class and defrost it so it is eligible for modifications
clazz.defrost();
int index = 0;
for (String xformVal : xformVals) {
// Load the source class
String trimmed = xformVal.trim();
classPool.appendClassPath(new LoaderClassPath(Class.forName(trimmed).getClassLoader()));
CtClass template = classPool.get(trimmed);
// Add in extra interfaces
CtClass[] interfacesToCopy = template.getInterfaces();
for (CtClass i : interfacesToCopy) {
checkInterfaces:
{
CtClass[] myInterfaces = clazz.getInterfaces();
for (CtClass myInterface : myInterfaces) {
if (myInterface.getName().equals(i.getName())) {
if (xformSkipOverlaps[index]) {
break checkInterfaces;
} else {
throw new RuntimeException(
"Duplicate interface detected " + myInterface.getName());
}
}
}
logger.debug(String.format("Adding interface [%s]", i.getName()));
clazz.addInterface(i);
}
}
// copy over any EntityListeners
ClassFile classFile = clazz.getClassFile();
ClassFile templateFile = template.getClassFile();
ConstPool constantPool = classFile.getConstPool();
buildClassLevelAnnotations(classFile, templateFile, constantPool);
// Copy over all declared fields from the template class
// Note that we do not copy over fields with the @NonCopiedField annotation
CtField[] fieldsToCopy = template.getDeclaredFields();
for (CtField field : fieldsToCopy) {
if (field.hasAnnotation(NonCopied.class)) {
logger.debug(String.format("Not adding field [%s]", field.getName()));
} else {
try {
CtField ctField = clazz.getDeclaredField(field.getName());
String originalSignature = ctField.getSignature();
String mySignature = field.getSignature();
if (!originalSignature.equals(mySignature)) {
throw new IllegalArgumentException(
"Field with name ("
+ field.getName()
+ ") and signature "
+ "("
+ field.getSignature()
+ ") is targeted for weaving into ("
+ clazz.getName()
+ "). "
+ "An incompatible field of the same name and signature of ("
+ ctField.getSignature()
+ ") "
+ "already exists. The field in the target class should be updated to a different name, "
+ "or made to have a matching type.");
}
if (xformSkipOverlaps[index]) {
logger.debug(String.format("Skipping overlapped field [%s]", field.getName()));
continue;
}
} catch (NotFoundException e) {
// do nothing -- field does not exist
}
logger.debug(String.format("Adding field [%s]", field.getName()));
CtField copiedField = new CtField(field, clazz);
boolean defaultConstructorFound = false;
String implClass = getImplementationType(field.getType().getName());
// Look through all of the constructors in the implClass to see
// if there is one that takes zero parameters
try {
CtConstructor[] implConstructors = classPool.get(implClass).getConstructors();
if (implConstructors != null) {
for (CtConstructor cons : implConstructors) {
if (cons.getParameterTypes().length == 0) {
defaultConstructorFound = true;
break;
}
}
}
} catch (NotFoundException e) {
// Do nothing -- if we don't find this implementation, it's probably because it's
// an array. In this case, we will not initialize the field.
}
if (defaultConstructorFound) {
clazz.addField(copiedField, "new " + implClass + "()");
} else {
clazz.addField(copiedField);
}
}
}
// Copy over all declared methods from the template class
CtMethod[] methodsToCopy = template.getDeclaredMethods();
for (CtMethod method : methodsToCopy) {
if (method.hasAnnotation(NonCopied.class)) {
logger.debug(String.format("Not adding method [%s]", method.getName()));
} else {
try {
CtClass[] paramTypes = method.getParameterTypes();
CtMethod originalMethod = clazz.getDeclaredMethod(method.getName(), paramTypes);
if (xformSkipOverlaps[index]) {
logger.debug(
String.format(
"Skipping overlapped method [%s]", methodDescription(originalMethod)));
continue;
}
if (transformedMethods.contains(methodDescription(originalMethod))) {
throw new RuntimeException(
"Method already replaced " + methodDescription(originalMethod));
} else {
logger.debug(
String.format("Marking as replaced [%s]", methodDescription(originalMethod)));
transformedMethods.add(methodDescription(originalMethod));
}
logger.debug(String.format("Removing method [%s]", method.getName()));
if (xformRenameMethodOverlaps[index]) {
originalMethod.setName(renameMethodPrefix + method.getName());
} else {
clazz.removeMethod(originalMethod);
}
} catch (NotFoundException e) {
// Do nothing -- we don't need to remove a method because it doesn't exist
}
logger.debug(String.format("Adding method [%s]", method.getName()));
CtMethod copiedMethod = new CtMethod(method, clazz, null);
clazz.addMethod(copiedMethod);
}
}
index++;
}
if (xformTemplates.isEmpty()) {
annotationTransformedClasses.add(convertedClassName);
}
logger.lifecycle(
LifeCycleEvent.END,
String.format(
"Transform - Copying into [%s] from [%s]",
xformKey, StringUtils.join(xformVals, ",")));
return clazz.toBytecode();
}
} catch (ClassCircularityError error) {
error.printStackTrace();
throw error;
} catch (Exception e) {
throw new RuntimeException("Unable to transform class", e);
} finally {
if (clazz != null) {
clazz.detach();
}
}
return null;
}
@Override
public byte[] transform(
ClassLoader loader,
String className,
Class<?> classBeingRedefined,
ProtectionDomain protectionDomain,
byte[] classfileBuffer)
throws IllegalClassFormatException {
String convertedClassName = className.replace('/', '.');
if (xformTemplates.containsKey(convertedClassName)) {
String xformKey = convertedClassName;
String[] xformVals = xformTemplates.get(xformKey).split(",");
logger.lifecycle(
LifeCycleEvent.START,
String.format(
"Transform - Copying into [%s] from [%s]",
xformKey, StringUtils.join(xformVals, ",")));
try {
// Load the destination class and defrost it so it is eligible for modifications
ClassPool classPool = ClassPool.getDefault();
CtClass clazz = classPool.makeClass(new ByteArrayInputStream(classfileBuffer), false);
clazz.defrost();
for (String xformVal : xformVals) {
// Load the source class
String trimmed = xformVal.trim();
classPool.appendClassPath(new LoaderClassPath(Class.forName(trimmed).getClassLoader()));
CtClass template = classPool.get(trimmed);
// Add in extra interfaces
CtClass[] interfacesToCopy = template.getInterfaces();
for (CtClass i : interfacesToCopy) {
logger.debug(String.format("Adding interface [%s]", i.getName()));
clazz.addInterface(i);
}
// Copy over all declared fields from the template class
// Note that we do not copy over fields with the @NonCopiedField annotation
CtField[] fieldsToCopy = template.getDeclaredFields();
for (CtField field : fieldsToCopy) {
if (field.hasAnnotation(NonCopied.class)) {
logger.debug(String.format("Not adding field [%s]", field.getName()));
} else {
logger.debug(String.format("Adding field [%s]", field.getName()));
CtField copiedField = new CtField(field, clazz);
boolean defaultConstructorFound = false;
String implClass = getImplementationType(field.getType().getName());
// Look through all of the constructors in the implClass to see
// if there is one that takes zero parameters
try {
CtConstructor[] implConstructors = classPool.get(implClass).getConstructors();
if (implConstructors != null) {
for (CtConstructor cons : implConstructors) {
if (cons.getParameterTypes().length == 0) {
defaultConstructorFound = true;
break;
}
}
}
} catch (NotFoundException e) {
// Do nothing -- if we don't find this implementation, it's probably because it's
// an array. In this case, we will not initialize the field.
}
if (defaultConstructorFound) {
clazz.addField(copiedField, "new " + implClass + "()");
} else {
clazz.addField(copiedField);
}
}
}
// Copy over all declared methods from the template class
CtMethod[] methodsToCopy = template.getDeclaredMethods();
for (CtMethod method : methodsToCopy) {
if (method.hasAnnotation(NonCopied.class)) {
logger.debug(String.format("Not adding method [%s]", method.getName()));
} else {
try {
CtClass[] paramTypes = method.getParameterTypes();
CtMethod originalMethod = clazz.getDeclaredMethod(method.getName(), paramTypes);
if (transformedMethods.contains(methodDescription(originalMethod))) {
throw new RuntimeException(
"Method already replaced " + methodDescription(originalMethod));
} else {
logger.debug(
String.format("Marking as replaced [%s]", methodDescription(originalMethod)));
transformedMethods.add(methodDescription(originalMethod));
}
logger.debug(String.format("Removing method [%s]", method.getName()));
clazz.removeMethod(originalMethod);
} catch (NotFoundException e) {
// Do nothing -- we don't need to remove a method because it doesn't exist
}
logger.debug(String.format("Adding method [%s]", method.getName()));
CtMethod copiedMethod = new CtMethod(method, clazz, null);
clazz.addMethod(copiedMethod);
}
}
}
logger.lifecycle(
LifeCycleEvent.END,
String.format(
"Transform - Copying into [%s] from [%s]",
xformKey, StringUtils.join(xformVals, ",")));
return clazz.toBytecode();
} catch (Exception e) {
throw new RuntimeException("Unable to transform class", e);
}
}
return null;
}
public void testToClass() throws Exception {
ClassPool cp = ClassPool.getDefault();
CtClass cc = cp.makeClass("test2.ToClassTest");
Class c = cc.toClass();
assertEquals(getClass().getClassLoader(), c.getClassLoader());
}
public DirectoryTestReader(Class<?> clazz) {
CsvDirectory csvDirectoryAnnotation = ReflectionUtils.getAnnotation(clazz, CsvDirectory.class);
if (csvDirectoryAnnotation == null) {
throw new RuntimeException(
"Missing annotation \'@CsvDirectory\' on class [" + clazz.getCanonicalName() + "]");
}
csvDirectory = csvDirectoryAnnotation.value();
csvShortName = csvDirectory.substring(csvDirectory.lastIndexOf('/') + 1);
CsvMacros csvMacrosAnnotation = ReflectionUtils.getAnnotation(clazz, CsvMacros.class);
if (csvMacrosAnnotation == null) {
throw new RuntimeException(
"Missing annotation \'@CsvMacros\' on class [" + clazz.getCanonicalName() + "]");
}
this.csvMacros = new ArrayList<String>();
for (String s : csvMacrosAnnotation.value()) {
csvMacros.add(s);
}
File directory = new File(this.csvDirectory);
if (!directory.exists()) {
throw new RuntimeException("Firectory [" + this.csvDirectory + "] does not exist");
}
testMethods = new ArrayList<Method>();
try {
tests = new HashMap<String, List<List<String>>>();
macroFiles = new HashMap<String, List<List<String>>>();
for (File f : directory.listFiles()) {
if (f.getName().endsWith(".csv")) {
String s = f.getName();
s = s.substring(0, s.length() - 4);
FileReader reader = new FileReader(f);
List<List<String>> sheet = CsvReader.readCsv(reader);
if (csvMacros.contains(s)) {
macroFiles.put(s, sheet);
} else {
tests.put(s, sheet);
}
}
}
ClassPool cp = ClassPool.getDefault();
CtClass newClazz =
cp.makeClass(clazz.getCanonicalName() + ".generated" + System.currentTimeMillis());
newClazz.setSuperclass(cp.get(clazz.getCanonicalName()));
List<String> methodList = new ArrayList<String>();
for (Entry<String, List<List<String>>> entry : tests.entrySet()) {
String methodName = "run_" + csvShortName + "_" + entry.getKey();
CtMethod m = new CtMethod(CtClass.voidType, methodName, new CtClass[0], newClazz);
methodList.add(methodName);
m.setBody("launchTest(\"" + entry.getKey() + "\");");
newClazz.addMethod(m);
}
generatedClazz = newClazz.toClass();
for (String methodName : methodList) {
Method m = generatedClazz.getMethod(methodName);
testMethods.add(m);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
private void createClass(String classname) throws CannotCompileException, IOException {
ClassPool pool = ClassPool.getDefault();
CtClass foobarClass = pool.makeClass(classname);
foobarClass.writeFile(newDir.getAbsolutePath());
}
public ClazzInfo classProcessing(String clazzName)
throws NotFoundException, CannotCompileException {
ClassPool classPool = ClassPool.getDefault();
CtClass cz = classPool.get(clazzName);
classPool.importPackage(clazzName); // 继承
classPool.importPackage("java.lang.reflect.Method"); // 添加反射引用
CtClass newClass = classPool.makeClass(clazzName + "$MC_IMPL"); // 新建代理类
newClass.setSuperclass(cz); // 继承
// 构造块
CtConstructor tempC;
CtConstructor[] ctConstructors = cz.getDeclaredConstructors();
newClass.addConstructor(CtNewConstructor.defaultConstructor(newClass));
for (CtConstructor c : ctConstructors) {
try {
tempC = CtNewConstructor.copy(c, newClass, null);
tempC.setBody("{super($$);}");
newClass.addConstructor(tempC);
} catch (Exception e) {
// e.printStackTrace();
}
}
// 字段块
// CtField[] ctFields = cz.getDeclaredFields();
// for (CtField f : ctFields)
// System.out.println(f.getFieldInfo().getConstantValue());
// 方法块
CtMethod[] ctMethods = cz.getDeclaredMethods();
CtMethod tempM; // 复制方法名
Map<String, Method> tempMethod = new HashMap<String, Method>();
for (CtMethod m : ctMethods) {
tempMethod.put(
String.format(
"%s %s %s(%s);",
Modifier.toString(m.getModifiers()),
m.getReturnType().getName(),
m.getName(),
Util.getParameterTypes(m.getParameterTypes())),
null);
// System.err.println(String.format("%s %s %s(%s);", Modifier.toString(m.getModifiers()),
// m.getReturnType().getName(), m.getName(), Util.getParameterTypes(m.getParameterTypes())));
tempM = CtNewMethod.copy(m, newClass, null);
if ("void".equals(tempM.getReturnType().getName()))
tempM.setBody("{super." + tempM.getName() + "($$);}");
else tempM.setBody("{ return super." + tempM.getName() + "($$);}");
// CtNewMethod.make(src, declaring, delegateObj, delegateMethod)
// 方法修改
// if (m.getName().equals("x")) {
// //tempM.setBody("{$proceed($$);}", "this", "mba");
// //tempM.setBody("{n nn = new n();" + "Method a = n.class.getDeclaredMethod(\"a\", new
// Class[] { Integer.TYPE });" + "a.invoke(nn, new Object[] { Integer.valueOf(1) });}");
// tempM.setBody("{Method a = n.class.getDeclaredMethod(\"axx\", new Class[] { Integer.TYPE
// });}");
// }
newClass.addMethod(tempM);
}
// 测试输出
try {
newClass.writeFile("D:/Desktop");
} catch (IOException e) {
e.printStackTrace();
}
// Class clazz = newClass.toClass();
// System.out.println(clazz.getCanonicalName());
// DefaultCachePoolFactory.newInstance().addNFloop4Map(new ClazzInfo(clazz, tempMethod),
// DefaultPool.NORNAL_BEAN, clazz.getCanonicalName());
// return clazz;
return new ClazzInfo(newClass.toClass(), tempMethod);
}
/** Generate Javassist Proxy Classes */
private static <T> void generateProxyClass(
Class<T> primaryInterface, String superClassName, String methodBody) throws Exception {
String newClassName = superClassName.replaceAll("(.+)\\.(\\w+)", "$1.Hikari$2");
CtClass superCt = classPool.getCtClass(superClassName);
CtClass targetCt = classPool.makeClass(newClassName, superCt);
targetCt.setModifiers(Modifier.FINAL);
System.out.println("Generating " + newClassName);
targetCt.setModifiers(Modifier.PUBLIC);
// Make a set of method signatures we inherit implementation for, so we don't generate delegates
// for these
Set<String> superSigs = new HashSet<>();
for (CtMethod method : superCt.getMethods()) {
if ((method.getModifiers() & Modifier.FINAL) == Modifier.FINAL) {
superSigs.add(method.getName() + method.getSignature());
}
}
Set<String> methods = new HashSet<>();
Set<Class<?>> interfaces = getAllInterfaces(primaryInterface);
for (Class<?> intf : interfaces) {
CtClass intfCt = classPool.getCtClass(intf.getName());
targetCt.addInterface(intfCt);
for (CtMethod intfMethod : intfCt.getDeclaredMethods()) {
final String signature = intfMethod.getName() + intfMethod.getSignature();
// don't generate delegates for methods we override
if (superSigs.contains(signature)) {
continue;
}
// Ignore already added methods that come from other interfaces
if (methods.contains(signature)) {
continue;
}
// Ignore default methods (only for Jre8 or later)
if (isDefaultMethod(intf, intfCt, intfMethod)) {
continue;
}
// Track what methods we've added
methods.add(signature);
// Clone the method we want to inject into
CtMethod method = CtNewMethod.copy(intfMethod, targetCt, null);
String modifiedBody = methodBody;
// If the super-Proxy has concrete methods (non-abstract), transform the call into a simple
// super.method() call
CtMethod superMethod = superCt.getMethod(intfMethod.getName(), intfMethod.getSignature());
if ((superMethod.getModifiers() & Modifier.ABSTRACT) != Modifier.ABSTRACT) {
modifiedBody = modifiedBody.replace("((cast) ", "");
modifiedBody = modifiedBody.replace("delegate", "super");
modifiedBody = modifiedBody.replace("super)", "super");
}
modifiedBody = modifiedBody.replace("cast", primaryInterface.getName());
// Generate a method that simply invokes the same method on the delegate
if (isThrowsSqlException(intfMethod)) {
modifiedBody = modifiedBody.replace("method", method.getName());
} else {
modifiedBody =
"{ return ((cast) delegate).method($$); }"
.replace("method", method.getName())
.replace("cast", primaryInterface.getName());
}
if (method.getReturnType() == CtClass.voidType) {
modifiedBody = modifiedBody.replace("return", "");
}
method.setBody(modifiedBody);
targetCt.addMethod(method);
}
}
targetCt.writeFile("target/classes");
}
public byte[] transform(
ClassLoader loader,
String className,
Class<?> classBeingRedefined,
ProtectionDomain protectionDomain,
byte[] classfileBuffer)
throws IllegalClassFormatException {
if (infos.isEmpty()) {
return null;
}
String convertedClassName = className.replace('/', '.');
SingleTableInheritanceInfo key = new SingleTableInheritanceInfo();
key.setClassName(convertedClassName);
int pos = infos.indexOf(key);
if (pos >= 0) {
try {
if (LOG.isDebugEnabled()) {
LOG.debug("Converting " + convertedClassName + " to a SingleTable inheritance strategy.");
}
SingleTableInheritanceInfo myInfo = infos.get(pos);
ClassFile classFile =
new ClassFile(new DataInputStream(new ByteArrayInputStream(classfileBuffer)));
ConstPool constantPool = classFile.getConstPool();
AnnotationsAttribute annotationsAttribute =
new AnnotationsAttribute(constantPool, AnnotationsAttribute.visibleTag);
List<?> attributes = classFile.getAttributes();
Iterator<?> itr = attributes.iterator();
while (itr.hasNext()) {
Object object = itr.next();
if (AnnotationsAttribute.class.isAssignableFrom(object.getClass())) {
AnnotationsAttribute attr = (AnnotationsAttribute) object;
Annotation[] items = attr.getAnnotations();
for (Annotation annotation : items) {
String typeName = annotation.getTypeName();
if (!typeName.equals(Inheritance.class.getName())
&& ((myInfo.getDiscriminatorName() == null
&& !typeName.equals(Table.class.getName()))
|| myInfo.getDiscriminatorName() != null)) {
annotationsAttribute.addAnnotation(annotation);
}
}
itr.remove();
}
}
Annotation inheritance = new Annotation(Inheritance.class.getName(), constantPool);
ClassPool pool = ClassPool.getDefault();
pool.importPackage("javax.persistence");
pool.importPackage("java.lang");
EnumMemberValue strategy =
(EnumMemberValue)
Annotation.createMemberValue(constantPool, pool.makeClass("InheritanceType"));
strategy.setType(InheritanceType.class.getName());
strategy.setValue(InheritanceType.SINGLE_TABLE.name());
inheritance.addMemberValue("strategy", strategy);
annotationsAttribute.addAnnotation(inheritance);
if (myInfo.getDiscriminatorName() != null) {
Annotation discriminator =
new Annotation(DiscriminatorColumn.class.getName(), constantPool);
StringMemberValue name = new StringMemberValue(constantPool);
name.setValue(myInfo.getDiscriminatorName());
discriminator.addMemberValue("name", name);
EnumMemberValue discriminatorType =
(EnumMemberValue)
Annotation.createMemberValue(constantPool, pool.makeClass("DiscriminatorType"));
discriminatorType.setType(DiscriminatorType.class.getName());
discriminatorType.setValue(myInfo.getDiscriminatorType().name());
discriminator.addMemberValue("discriminatorType", discriminatorType);
IntegerMemberValue length = new IntegerMemberValue(constantPool);
length.setValue(myInfo.getDiscriminatorLength());
discriminator.addMemberValue("length", length);
annotationsAttribute.addAnnotation(discriminator);
}
classFile.addAttribute(annotationsAttribute);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
DataOutputStream os = new DataOutputStream(bos);
classFile.write(os);
os.close();
return bos.toByteArray();
} catch (Exception ex) {
ex.printStackTrace();
throw new IllegalClassFormatException(
"Unable to convert "
+ convertedClassName
+ " to a SingleTable inheritance strategy: "
+ ex.getMessage());
}
} else {
return null;
}
}
/**
* Given a bean-style interface, generate an instance of the interface by implementing getters and
* setters for each property. It will also add implementations to support the {@link
* SupportsRdfId} interface and generate simple, default equals, toString and hashCode methods.
*
* <p>If there are other non-bean style (getter and/or setter's for properties) methods on the
* interface, this will likely fail to generate the instance.
*
* @param theInterface the interface to build an instance of
* @param <T> the type of the interface
* @return New dynamically generated bytecode of a class that implements the given interface.
* @throws Exception if there is an error while generating the bytecode of the new class.
*/
public static synchronized <T> Class<T> generateInstanceClass(Class<T> theInterface)
throws Exception {
processedMethods.clear();
// TODO: can we use some sort of template language for this?
ClassPool aPool = ClassPool.getDefault();
aPool.appendClassPath(new LoaderClassPath(theInterface.getClassLoader()));
CtClass aInterface = aPool.get(theInterface.getName());
CtClass aSupportsRdfIdInterface = aPool.get(SupportsRdfId.class.getName());
CtClass aEmpireGeneratedInterface = aPool.get(EmpireGenerated.class.getName());
if (!Arrays.asList(aInterface.getInterfaces()).contains(aSupportsRdfIdInterface)
&& !SupportsRdfId.class.isAssignableFrom(theInterface)) {
throw new IllegalArgumentException(
"Class '"
+ theInterface.getName()
+ "' does not implement SupportsRdfId, cannot generate Empire suitable implementation.");
}
String aName = aInterface.getPackageName() + ".impl." + aInterface.getSimpleName() + "Impl";
CtClass aClass = null;
try {
// i had a good reason for doing this, but i dont remember what it is. when i do, i'll
// explain it here =)
aClass = aPool.get(aName);
return (Class<T>) BeanReflectUtil.loadClass(aName);
} catch (NotFoundException e) {
aClass =
aPool.makeClass(
aInterface.getPackageName() + ".impl." + aInterface.getSimpleName() + "Impl");
} catch (ClassNotFoundException e) {
throw new Exception("Previously created class cannot be loaded.", e);
}
if (aClass.isFrozen()) {
aClass.defrost();
}
if (aInterface.isInterface()) {
aClass.addInterface(aInterface);
} else {
aClass.setSuperclass(aInterface);
}
aClass.addInterface(aSupportsRdfIdInterface);
aClass.addInterface(aEmpireGeneratedInterface);
CtField aInterfaceField =
new CtField(aPool.get(Class.class.getName()), "mInterfaceClass", aClass);
aClass.addField(
aInterfaceField, CtField.Initializer.byExpr(theInterface.getName() + ".class;"));
CtField aAllTriplesField = new CtField(aPool.get(Graph.class.getName()), "mAllTriples", aClass);
aClass.addField(
aAllTriplesField, CtField.Initializer.byExpr("new com.clarkparsia.openrdf.ExtGraph();"));
CtField aInstanceTriplesField =
new CtField(aPool.get(Graph.class.getName()), "mInstanceTriples", aClass);
aClass.addField(
aInstanceTriplesField,
CtField.Initializer.byExpr("new com.clarkparsia.openrdf.ExtGraph();"));
aClass.addConstructor(CtNewConstructor.defaultConstructor(aClass));
generateMethods(theInterface, aPool, aClass);
generateMethodsForSuperInterfaces(theInterface, aPool, aClass);
CtField aIdField = new CtField(aPool.get(SupportsRdfId.class.getName()), "supportsId", aClass);
aClass.addField(
aIdField,
CtField.Initializer.byExpr("new com.clarkparsia.empire.annotation.SupportsRdfIdImpl();"));
if (!hasMethod(aClass, "getRdfId")) {
aClass.addMethod(
CtNewMethod.make(
"public com.clarkparsia.empire.SupportsRdfId.RdfKey getRdfId() { return supportsId.getRdfId(); } ",
aClass));
}
if (!hasMethod(aClass, "setRdfId")) {
aClass.addMethod(
CtNewMethod.make(
"public void setRdfId(com.clarkparsia.empire.SupportsRdfId.RdfKey theURI) { supportsId.setRdfId(theURI); } ",
aClass));
}
if (!hasMethod(aClass, "getAllTriples")) {
aClass.addMethod(
CtNewMethod.make(
"public org.openrdf.model.Graph getAllTriples() { return mAllTriples; } ", aClass));
}
if (!hasMethod(aClass, "setAllTriples")) {
aClass.addMethod(
CtNewMethod.make(
"public void setAllTriples(org.openrdf.model.Graph theGraph) { mAllTriples = theGraph; } ",
aClass));
}
if (!hasMethod(aClass, "getInstanceTriples")) {
aClass.addMethod(
CtNewMethod.make(
"public org.openrdf.model.Graph getInstanceTriples() { return mInstanceTriples; } ",
aClass));
}
if (!hasMethod(aClass, "setInstanceTriples")) {
aClass.addMethod(
CtNewMethod.make(
"public void setInstanceTriples(org.openrdf.model.Graph theGraph) { mInstanceTriples = theGraph; } ",
aClass));
}
String equalsMethodBody =
"public boolean equals(Object theObj) {\n"
+ " if (theObj == this) return true;\n"
+ " if (!(theObj instanceof com.clarkparsia.empire.SupportsRdfId)) return false;\n"
+ " if (!(mInterfaceClass.isAssignableFrom(theObj.getClass()))) return false;\n"
+ " return getRdfId().equals( ((com.clarkparsia.empire.SupportsRdfId) theObj).getRdfId()) && super.equals(theObj);\n"
+ "}\n";
aClass.addMethod(CtNewMethod.make(equalsMethodBody, aClass));
if (theInterface.isInterface()) {
aClass.addMethod(
CtNewMethod.make(
"public String toString() { return getRdfId() != null ? getRdfId().toString() : super.toString(); } ",
aClass));
aClass.addMethod(
CtNewMethod.make(
"public int hashCode() { return getRdfId() != null ? getRdfId().hashCode() : 0; } ",
aClass));
}
aClass.freeze();
Class<T> aResult = (Class<T>) aClass.toClass();
try {
// make sure this is a valid class, that is, we can create instances of it!
aResult.newInstance();
} catch (Exception ex) {
// TODO: log this?
throw ex;
}
return aResult;
}
@Override
public byte[] transform(
ClassLoader loader,
String className,
Class<?> classBeingRedefined,
ProtectionDomain protectionDomain,
byte[] classfileBuffer)
throws IllegalClassFormatException {
// Don't transform system classes. This reason is:
// - To improve performance
// - To avoid unexpected behaviors.
// For example, if transforms java.lang.invoke.** classes in Java8
// even without any ctClass modification, the classes become broken
// and Java stream API call fails unexpectedly.
// Maybe this is because CtClass instance generated by ClassPool.makeClass method
// is cached on global default ClassPool instance.
if (isJavaSystemClassName(className)) {
return null;
}
// TODO don't need to do anything for java package classes
ClassPool classPool = ClassPool.getDefault();
String hookClassName = HookMethodDef.class.getCanonicalName();
String initializeSrc = hookInitializeSrc();
boolean transformed = false;
InputStream stream = null;
try {
stream = new ByteArrayInputStream(classfileBuffer);
CtClass ctClass = null;
try {
ctClass = classPool.makeClass(stream, true);
} catch (RuntimeException e) {
// makeClass raises RuntimeException when the existing class is frozen.
// Since frozen classes are maybe system class, just ignore this exception
return null;
}
for (Pair<CtMethod, TestMethod> pair : allSubMethods(srcTree, ctClass)) {
CtMethod ctSubMethod = pair.getLeft();
TestMethod subMethod = pair.getRight();
if (ctSubMethod.isEmpty()) {
logger.info("skip empty method: " + ctSubMethod.getLongName());
continue; // cannot hook empty method
}
String subClassQualifiedName = subMethod.getTestClass().getQualifiedName();
String subMethodSimpleName = subMethod.getSimpleName();
String subMethodArgClassesStr =
TestMethod.argClassQualifiedNamesToArgClassesStr(
getArgClassQualifiedNames(ctSubMethod));
for (int i = 0; i < subMethod.getCodeBody().size(); i++) {
CodeLine codeLine = subMethod.getCodeBody().get(i);
if (i + 1 < subMethod.getCodeBody().size()) {
CodeLine nextCodeLine = subMethod.getCodeBody().get(i + 1);
assert codeLine.getEndLine() <= nextCodeLine.getStartLine();
if (codeLine.getEndLine() == nextCodeLine.getStartLine()) {
// - if multiple statements exist on a line, insert hook only after the last statement
// - avoid insertion at the middle of the statement.
// The problem happens when multi-line statements are like:
// method(1);method(
// 2);
continue;
}
}
// Hook should be inserted just after the code has finished
// since the code inserted by the insertAt method is inserted just before the specified
// line.
int insertedLine = subMethod.getCodeBody().get(i).getEndLine() + 1;
int actualInsertedLine = ctSubMethod.insertAt(insertedLine, false, null);
ctSubMethod.insertAt(
insertedLine,
String.format(
"%s%s.beforeCodeLineHook(\"%s\",\"%s\",\"%s\",\"%s\",%d, %d);",
initializeSrc,
hookClassName,
subClassQualifiedName,
subMethodSimpleName,
subMethodSimpleName,
subMethodArgClassesStr,
codeLine.getStartLine(),
actualInsertedLine));
transformed = true;
}
}
CtClass exceptionType = classPool.get(Throwable.class.getCanonicalName());
for (Pair<CtMethod, TestMethod> pair : allRootMethods(srcTree, ctClass)) {
CtMethod ctRootMethod = pair.getLeft();
TestMethod rootMethod = pair.getRight();
if (ctRootMethod.isEmpty()) {
continue; // cannot hook empty method
}
String rootClassQualifiedName = rootMethod.getTestClass().getQualifiedName();
String rootMethodSimpleName = rootMethod.getSimpleName();
String rootMethodArgClassesStr =
TestMethod.argClassQualifiedNamesToArgClassesStr(
getArgClassQualifiedNames(ctRootMethod));
for (int i = 0; i < rootMethod.getCodeBody().size(); i++) {
CodeLine codeLine = rootMethod.getCodeBody().get(i);
if (i + 1 < rootMethod.getCodeBody().size()) {
CodeLine nextCodeLine = rootMethod.getCodeBody().get(i + 1);
assert codeLine.getEndLine() <= nextCodeLine.getStartLine();
if (codeLine.getEndLine() == nextCodeLine.getStartLine()) {
// - if multiple statements exist on a line, insert hook only after the last statement
// - avoid insertion at the middle of the statement.
// The problem happens when multi-line statements are like:
// method(1);method(
// 2);
continue;
// TODO screen capture is not taken correctly for multiple statements in a line
}
}
// Hook should be inserted just after the code has finished
// since the code inserted by the insertAt method is inserted just before the specified
// line.
int insertedLine = rootMethod.getCodeBody().get(i).getEndLine() + 1;
int actualInsertedLine = ctRootMethod.insertAt(insertedLine, false, null);
ctRootMethod.insertAt(
insertedLine,
String.format(
"%s%s.beforeCodeLineHook(\"%s\",\"%s\",\"%s\",\"%s\",%d,%d);",
initializeSrc,
hookClassName,
rootClassQualifiedName,
rootMethodSimpleName,
rootMethodSimpleName,
rootMethodArgClassesStr,
codeLine.getStartLine(),
actualInsertedLine));
}
ctRootMethod.insertBefore(
String.format(
"%s%s.beforeMethodHook(\"%s\",\"%s\",\"%s\");",
initializeSrc,
hookClassName,
rootClassQualifiedName,
rootMethodSimpleName,
rootMethodSimpleName));
ctRootMethod.addCatch(
String.format(
"{ %s%s.methodErrorHook(\"%s\",\"%s\",$e); throw $e; }",
initializeSrc, hookClassName, rootClassQualifiedName, rootMethodSimpleName),
exceptionType);
ctRootMethod.insertAfter(
String.format(
"%s%s.afterMethodHook(\"%s\",\"%s\");",
initializeSrc, hookClassName, rootClassQualifiedName, rootMethodSimpleName),
true);
transformed = true;
}
// don't transform not changed ctClass
// (to improve performance and avoid unexpected error)
if (transformed) {
logger.info("transform " + className);
return ctClass.toBytecode();
} else {
return null;
}
} catch (CannotCompileException e) {
// print error since exception in transform method is just ignored
System.err.println("exception on " + className);
e.printStackTrace();
throw new IllegalClassFormatException(e.getLocalizedMessage());
} catch (Exception e) {
// print error since exception in transform method is just ignored
System.err.println("exception on " + className);
e.printStackTrace();
throw new RuntimeException(e);
} finally {
IOUtils.closeQuietly(stream);
}
}
// 用javassit得到动态代理
public T createJavassistBytecodeDynamicProxy(
LoadBalancer loadBalance, ConcurrentMap<String, T> map, Class ifaces) {
try {
ClassPool mPool = new ClassPool(true);
CtClass mCtc = mPool.makeClass(ifaces.getName() + "JavaassistProxy");
mCtc.addInterface(mPool.get(ifaces.getName()));
mCtc.addConstructor(CtNewConstructor.defaultConstructor(mCtc));
mCtc.addField(CtField.make("public " + loadBalance.getClass().getName() + " sub;", mCtc));
mCtc.addField(CtField.make("public " + map.getClass().getName() + " map;", mCtc));
// mCtc.addField(CtField.make("public " + ArrayList.class.getName() + " list;",
// mCtc));
mCtc.addMethod(
CtNewMethod.make(
"public Object getRealClient() { return (Object)sub.select(new "
+ ArrayList.class.getName()
+ "(map.values())); }",
mCtc));
// 获取接口的方法
for (Method method : ifaces.getMethods()) {
Class returnType = method.getReturnType();
String modifiers = "public";
if (Modifier.PUBLIC == method.getModifiers()) {
modifiers = "public";
} else if (Modifier.PROTECTED == method.getModifiers()) {
modifiers = "protected";
} else if (Modifier.PRIVATE == method.getModifiers()) {
modifiers = "private";
}
Class<?>[] parameter = method.getParameterTypes();
String params = "";
String ps = "";
for (Class param : parameter) {
params += param.getName() + " " + param.getName() + ",";
ps += param.getName() + ",";
}
if (params.equals("")) {
params = "";
ps = "";
} else {
params = params.substring(0, params.length());
ps = ps.substring(0, ps.length());
}
mCtc.addMethod(
CtNewMethod.make(
modifiers
+ " void "
+ method.getName()
+ "(String a,String b){ Object t=this.getRealClient(); return (("
+ ifaces.getName()
+ ")t)."
+ method.getName()
+ "(a,b) ;}",
mCtc));
// mCtc.addMethod(CtNewMethod.make("public int count() { return
// delegate.count(); }", mCtc));
}
Class<?> pc = mCtc.toClass();
mCtc.debugWriteFile("/home/liguojun");
mCtc.writeFile("/home/liguojun");
T bytecodeProxy = (T) pc.newInstance();
Field filed = bytecodeProxy.getClass().getField("sub");
filed.set(bytecodeProxy, loadBalance);
Field filed1 = bytecodeProxy.getClass().getField("map");
filed1.set(bytecodeProxy, map);
return bytecodeProxy;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* Creates a map of concrete json request handler invokers keyed by <b><code>
* <service-name>/<op-name></code></b>.
*
* @param handlerInstance The request handler instance to generate invokers for
* @return the map of generated invokers
*/
public static Map<String, Map<String, AbstractJSONRequestHandlerInvoker>> createInvokers(
Object handlerInstance) {
if (handlerInstance == null)
throw new IllegalArgumentException("The passed handlerInstance was null");
Map<String, AbstractJSONRequestHandlerInvoker> subInvokerMap =
new HashMap<String, AbstractJSONRequestHandlerInvoker>();
Map<String, Map<String, AbstractJSONRequestHandlerInvoker>> invokerMap =
invokerCache.get(handlerInstance.getClass());
if (invokerMap != null) {
LOG.info("Found Cached Invokers for [{}]", handlerInstance.getClass().getName());
return invokerMap;
}
invokerMap = new HashMap<String, Map<String, AbstractJSONRequestHandlerInvoker>>(1);
LOG.info("Generating Invokers for [{}]", handlerInstance.getClass().getName());
JSONRequestService svc = handlerInstance.getClass().getAnnotation(JSONRequestService.class);
final String invokerServiceKey = svc.name();
final String invokerServiceDescription = svc.description();
invokerMap.put(invokerServiceKey, subInvokerMap);
ClassPool cp = new ClassPool();
cp.appendClassPath(new ClassClassPath(handlerInstance.getClass()));
cp.appendClassPath(new ClassClassPath(AbstractJSONRequestHandlerInvoker.class));
cp.importPackage(handlerInstance.getClass().getPackage().getName());
Set<ClassLoader> classPathsAdded = new HashSet<ClassLoader>();
Set<String> packagesImported = new HashSet<String>();
try {
final CtClass jsonRequestCtClass = cp.get(JSONRequest.class.getName());
final CtClass parent = cp.get(AbstractJSONRequestHandlerInvoker.class.getName());
CtClass targetClass = cp.get(handlerInstance.getClass().getName());
Collection<Method> methods = getTargetMethods(handlerInstance.getClass());
for (Method m : methods) {
final JSONRequestHandler jsonHandler = m.getAnnotation(JSONRequestHandler.class);
final String opName = jsonHandler.name();
final String opDescription = jsonHandler.description();
final RequestType opType = jsonHandler.type();
int targetMethodHashCode = m.toGenericString().hashCode();
final String className =
String.format(
"%s-%s%s-%s-%s",
handlerInstance.getClass().getName(),
invokerServiceKey,
opName,
"ServiceInvoker",
targetMethodHashCode);
final CtClass invokerClass = cp.makeClass(className, parent);
CtField ctf = new CtField(targetClass, "typedTarget", invokerClass);
ctf.setModifiers(ctf.getModifiers() | Modifier.FINAL);
invokerClass.addField(ctf);
for (CtConstructor parentCtor : parent.getConstructors()) {
CtConstructor invokerCtor = CtNewConstructor.copy(parentCtor, invokerClass, null);
invokerCtor.setBody(
"{ super($$); typedTarget = (" + handlerInstance.getClass().getName() + ")$1; }");
invokerClass.addConstructor(invokerCtor);
}
CtMethod invokerMethod =
CtNewMethod.copy(
parent.getDeclaredMethod("doInvoke", new CtClass[] {jsonRequestCtClass}),
invokerClass,
null);
StringBuilder b = new StringBuilder("{this.typedTarget.").append(m.getName()).append("($1");
final Class<?>[] ptypes = m.getParameterTypes();
final int remainingParamCount = ptypes.length - 1;
// Set<Class<?>> classPathsAdded = new HashSet<Class<?>>();
// Set<String> packagesImported = new HashSet<String>();
if (remainingParamCount > 0) {
for (int i = 0; i < remainingParamCount; i++) {
final Class<?> type = ptypes[i + 1];
if (type.getName().contains("UniqueIdType")) {
System.err.println("Comin Up....");
}
if (type.isPrimitive()) {
b.append(", (").append(type.getName()).append(") null");
} else {
if (classPathsAdded.add(type.getClassLoader())) {
cp.appendClassPath(new LoaderClassPath(type.getClassLoader()));
}
try {
Package p = type.getPackage();
if (p == null) {
if (type.isArray()) {
if (!type.getComponentType().isPrimitive()) {
p = type.getComponentType().getPackage();
}
}
}
if (type.isEnum()) {
final String f = type.getEnclosingClass().getName() + "." + type.getSimpleName();
b.append(", (").append(f).append(") null");
String pack = type.getEnclosingClass().getPackage().getName();
if (packagesImported.add(pack)) {
cp.importPackage(pack);
}
continue;
}
if (p != null) {
if (packagesImported.add(p.getName())) {
cp.importPackage(p.getName());
}
}
} catch (Exception ex) {
ex.printStackTrace(System.err);
}
b.append(", (").append(type.getSimpleName()).append(") null");
}
}
}
b.append(");}");
System.out.println("[" + m.getName() + "]: [" + b.toString() + "]");
// invokerMethod.setBody("{this.typedTarget." + m.getName() + "($1);}");
invokerMethod.setBody(b.toString());
invokerMethod.setModifiers(invokerMethod.getModifiers() & ~Modifier.ABSTRACT);
invokerClass.addMethod(invokerMethod);
// invokerClass.writeFile(System.getProperty("java.io.tmpdir") + File.separator +
// "jsoninvokers");
Class<?> clazz =
invokerClass.toClass(
handlerInstance.getClass().getClassLoader(),
handlerInstance.getClass().getProtectionDomain());
Constructor<?> ctor =
clazz.getDeclaredConstructor(
Object.class,
String.class,
String.class,
String.class,
String.class,
RequestType.class);
AbstractJSONRequestHandlerInvoker invokerInstance =
(AbstractJSONRequestHandlerInvoker)
ctor.newInstance(
handlerInstance,
invokerServiceKey,
invokerServiceDescription,
opName,
opDescription,
opType);
subInvokerMap.put(opName, invokerInstance);
}
invokerCache.put(handlerInstance.getClass(), invokerMap);
return invokerMap;
} catch (Exception ex) {
LOG.error(
"Failed to create RequestHandlerInvoker for [{}]",
handlerInstance.getClass().getName(),
ex);
throw new RuntimeException(
"Failed to create RequestHandlerInvoker [" + handlerInstance.getClass().getName() + "]",
ex);
}
}
void scanClass(final URL codeSourceLocation, final InputStream in) throws IOException {
final ClassPool pool = new ClassPool();
CtClass ctClass = pool.makeClass(in);
inquisitor.interrogate(codeSourceLocation, ctClass);
}
protected CtClass makeCtClass(String className) {
return pool.makeClass(className);
}
private static CtClass makeExpressionClass(
Source.Staged staged, String superClassName, String memberClassName) {
// Here we make the language class accessible!
if (!Modifier.isPublic(staged.getLanguage().getModifiers())) {
staged.getLanguage().setModifiers(Modifier.setPublic(staged.getLanguage().getModifiers()));
}
CtClass clazz;
try {
ClassPool cp = ClassPool.getDefault();
CtClass superClass = cp.getCtClass(superClassName);
clazz =
cp.makeClass(
superClass.getName()
+ "$Generated"
+ id
+ "$"
+ staged.getMember().getDeclaringClass().getName().replace(".", "_")
+ "$"
+ staged.getMember().getName().replace(".", "_"),
superClass);
id++;
// Make accepted language static fields
HashMap<CtClass, String> acceptedLanguageMap = new HashMap<>();
for (Use.Argument a : staged.getArguments()) {
for (CtClass l : a.getAcceptedLanguages()) {
if (!acceptedLanguageMap.containsKey(l) && !l.equals(Util.LANGUAGE_CLASS)) {
String lName = "acceptedLanguage" + acceptedLanguageMap.size();
int lPersistentId = Dispatcher.addPersistent(l);
CtField lField =
CtField.make(
"private static final "
+ CtClass.class.getName()
+ " "
+ lName
+ " = ("
+ CtClass.class.getName()
+ ") "
+ Util.DISPATCHER_CLASS.getName()
+ ".removePersistent("
+ lPersistentId
+ ");",
clazz);
clazz.addField(lField);
acceptedLanguageMap.put(l, lName);
}
}
}
// Make language field
String languageName = "language";
int languagePersistentId = Dispatcher.addPersistent(staged.getLanguage());
CtField languageField =
CtField.make(
"private static final "
+ CtClass.class.getName()
+ " "
+ languageName
+ " = ("
+ CtClass.class.getName()
+ ") "
+ Util.DISPATCHER_CLASS.getName()
+ ".removePersistent("
+ languagePersistentId
+ ");",
clazz);
clazz.addField(languageField);
// Make member field
String memberName = "member";
int memberPersistentId = Dispatcher.addPersistent(staged.getMember());
CtField memberField =
CtField.make(
"private static final "
+ memberClassName
+ " "
+ memberName
+ " = ("
+ memberClassName
+ ")"
+ Util.DISPATCHER_CLASS.getName()
+ ".removePersistent("
+ memberPersistentId
+ ");",
clazz);
clazz.addField(memberField);
// Make constructor
String constructorSource =
"private constructor("
+ Util.EXPRESSION_CLASS.getName()
+ "[] arguments, "
+ Util.STATIC_INFO_CLASS.getName()
+ " staticInfo, "
+ Util.CLOSURE_HOLDER_CLASS.getName()
+ " closureHolder) {\n"
+ " super(arguments, staticInfo, closureHolder);\n"
+ "}";
CtConstructor constructor = CtNewConstructor.make(constructorSource, clazz);
clazz.addConstructor(constructor);
// Make factory-like invoke methods
ImmutableList<Use.Argument> args = staged.getArguments();
StringBuilder invokeSource = new StringBuilder();
if (staged.isStrict() || Util.isCarrier(staged.getType())) {
invokeSource.append(
"public static " + staged.getType().getCtClass().getName() + " invoke(");
} else if (staged.getType().isReference()) {
invokeSource.append("public static " + Util.LOCAL_CARRIER_CLASS.getName() + " invoke(");
} else {
invokeSource.append("public static " + clazz.getName() + " invoke(");
}
if (staged.getArguments().size() > 253) {
invokeSource.append("Object[] objectArguments, ");
if (!staged.getStaticInfoElements().isEmpty()) {
invokeSource.append(Util.STATIC_INFO_CLASS.getName() + " staticInfo, ");
}
invokeSource.append(Util.CLOSURE_HOLDER_CLASS.getName() + " closureHolder) {\n");
for (int i = 0; i < args.size(); i++) {
if (Util.isGlobalCarrier(args.get(i).getType())) {
invokeSource
.append(" ")
.append(Util.GLOBAL_CARRIER_CLASS.getName())
.append(" argument")
.append(i)
.append(" = (")
.append(Util.GLOBAL_CARRIER_CLASS.getName())
.append(") objectArguments[")
.append(i)
.append("];\n");
} else if (Util.isLocalCarrier(args.get(i).getType())
|| (args.get(i).getType().isReference()
&& !Util.couldBeGlobalCarrier(args.get(i).getType()))) {
invokeSource
.append(" ")
.append(Util.LOCAL_CARRIER_CLASS.getName())
.append(" argument")
.append(i)
.append(" = (")
.append(Util.LOCAL_CARRIER_CLASS.getName())
.append(") objectArguments[")
.append(i)
.append("];\n");
} else if (args.get(i).getType().isReference()) {
invokeSource
.append(" ")
.append(Type.OBJECT.getCtClass().getName())
.append(" argument")
.append(i)
.append(" = objectArguments[")
.append(i)
.append("];\n");
} else {
invokeSource
.append(" ")
.append(Util.EXPRESSION_CLASS.getName())
.append(" argument")
.append(i)
.append(" = (")
.append(Util.EXPRESSION_CLASS.getName())
.append(") objectArguments[")
.append(i)
.append("];\n");
}
}
} else {
for (int i = 0; i < args.size(); i++) {
if (Util.isGlobalCarrier(args.get(i).getType())) {
invokeSource.append(Util.GLOBAL_CARRIER_CLASS.getName()).append(" argument").append(i);
} else if (Util.isLocalCarrier(args.get(i).getType())
|| (args.get(i).getType().isReference()
&& !Util.couldBeGlobalCarrier(args.get(i).getType()))) {
invokeSource.append(Util.LOCAL_CARRIER_CLASS.getName()).append(" argument").append(i);
} else if (args.get(i).getType().isReference()) {
invokeSource.append(Type.OBJECT.getCtClass().getName()).append(" argument").append(i);
} else {
invokeSource.append(Util.EXPRESSION_CLASS.getName()).append(" argument").append(i);
}
invokeSource.append(", ");
}
if (!staged.getStaticInfoElements().isEmpty()) {
invokeSource.append(Util.STATIC_INFO_CLASS.getName() + " staticInfo, ");
}
invokeSource.append(Util.CLOSURE_HOLDER_CLASS.getName() + " closureHolder) {\n");
}
invokeSource.append(
" "
+ Util.EXPRESSION_CLASS.getName()
+ " payload;\n"
+ " "
+ Util.EXPRESSION_CLASS.getName()
+ "[] arguments = new "
+ Util.EXPRESSION_CLASS.getName()
+ "["
+ args.size()
+ "];\n");
for (int i = 0; i < args.size(); i++) {
if (Util.isGlobalCarrier(args.get(i).getType())) {
invokeSource.append(
" payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadGlobalCarrierChecked(argument"
+ i
+ ");\n"
+ " if (!("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ")) {\n"
+ " arguments["
+ i
+ "] = "
+ Util.DISPATCHER_CLASS.getName()
+ ".selfLiftGlobalCarrier(argument"
+ i
+ ");\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = payload;\n"
+ " }\n");
} else if (Util.isLocalCarrier(args.get(i).getType())
|| (args.get(i).getType().isReference()
&& !Util.couldBeGlobalCarrier(args.get(i).getType()))) {
invokeSource.append(
" payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadLocalCarrierChecked(argument"
+ i
+ ");\n"
+ " if ("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ") {\n"
+ " arguments["
+ i
+ "] = payload.getRaw();\n"
+ " } else {\n"
+ " payload.evaluate();\n"
// This handles the weird case when the materialized argument could be globally
// carried and might need unloading and checking
// We know that it is an ObjectValue instance
+ " "
+ Util.EXPRESSION_CLASS.getName()
+ " value = payload.asValueIfEvaluated();\n"
+ " Object obj = value.materializeAsObject(); \n"
+ " if (obj instanceof "
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") {\n"
+ " payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadGlobalCarrier(("
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") obj);\n"
+ " if (payload == null || !("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ")) {\n"
+ " arguments["
+ i
+ "] = value;\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = payload;\n"
+ " }\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = value;\n"
+ " }\n"
+ " }\n");
} else if (args.get(i).getType().isReference()) {
invokeSource.append(
" if (argument"
+ i
+ " instanceof "
+ Util.LOCAL_CARRIER_CLASS.getName()
+ ") {\n"
+ " payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadLocalCarrierChecked(("
+ Util.LOCAL_CARRIER_CLASS.getName()
+ ") argument"
+ i
+ ");\n"
+ " if ("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ") {\n"
+ " arguments["
+ i
+ "] = payload.getRaw();\n"
+ " } else {\n"
+ " payload.evaluate();\n"
// This handles the weird case when the materialized argument could be globally
// carried and might need unloading and checking
// We know that it is an ObjectValue instance
+ " "
+ Util.EXPRESSION_CLASS.getName()
+ " value = payload.asValueIfEvaluated();\n"
+ " Object obj = value.materializeAsObject(); \n"
+ " if (obj instanceof "
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") {\n"
+ " payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadGlobalCarrier(("
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") obj);\n"
+ " if (payload == null || !("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ")) {\n"
+ " arguments["
+ i
+ "] = value;\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = payload;\n"
+ " }\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = value;\n"
+ " }\n"
+ " }\n"
+ " } else if (argument"
+ i
+ " instanceof "
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") {\n"
+ " payload = "
+ Util.DISPATCHER_CLASS.getName()
+ ".unloadGlobalCarrierChecked(("
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") argument"
+ i
+ ");\n"
+ " if (!("
+ generateLanguageAcceptCheck(
"payload", args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ")) {\n"
+ " arguments["
+ i
+ "] = "
+ Util.DISPATCHER_CLASS.getName()
+ ".selfLiftGlobalCarrier(("
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ ") argument"
+ i
+ ");\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = payload;\n"
+ " }\n"
+ " } else {\n"
+ " arguments["
+ i
+ "] = "
+ Util.DISPATCHER_CLASS.getName()
+ "."
+ Util.getLiftMethodName(Type.OBJECT)
+ "(argument"
+ i
+ ");\n"
+ " }\n");
} else {
invokeSource.append(
" if ("
+ generateLanguageAcceptCheck(
"argument" + i, args.get(i).getAcceptedLanguages(), acceptedLanguageMap)
+ ") {\n"
+ " arguments["
+ i
+ "] = argument"
+ i
+ generateConversionSuffix(args.get(i).getType())
+ ".getRaw();\n"
+ " } else {\n"
+ " argument"
+ i
+ ".evaluate();\n"
+ " arguments["
+ i
+ "] = argument"
+ i
+ ".asValueIfEvaluated();\n"
+ " }\n");
}
}
String construction;
if (!staged.getStaticInfoElements().isEmpty()) {
construction = "new " + clazz.getName() + "(arguments, staticInfo, closureHolder)";
} else {
construction = "new " + clazz.getName() + "(arguments, null, closureHolder)";
}
if (staged.isStrict()) {
Type type = staged.getType();
if (type.isReference()) {
invokeSource.append(
" return ("
+ type.getCtClass().getName()
+ ") ("
+ construction
+ ").materializeAsObject();\n");
} else if (type.equals(Type.BOOLEAN)) {
invokeSource.append(" return (" + construction + ").materializeAsBoolean();\n");
} else if (type.equals(Type.INT)) {
invokeSource.append(" return (" + construction + ").materializeAsInteger();\n");
} else if (type.equals(Type.LONG)) {
invokeSource.append(" return (" + construction + ").materializeAsLong();\n");
} else if (type.equals(Type.FLOAT)) {
invokeSource.append(" return (" + construction + ").materializeAsFloat();\n");
} else if (type.equals(Type.DOUBLE)) {
invokeSource.append(" return (" + construction + ").materializeAsDouble();\n");
} else if (type.equals(Type.BYTE)) {
invokeSource.append(" return (" + construction + ").materializeAsByte();\n");
} else if (type.equals(Type.CHAR)) {
invokeSource.append(" return (" + construction + ").materializeAsCharacter();\n");
} else if (type.equals(Type.SHORT)) {
invokeSource.append(" return (" + construction + ").materializeAsShort();\n");
} else if (type.equals(Type.VOID)) {
invokeSource.append(" return (" + construction + ").evaluate();\n");
}
} else {
if (Util.isGlobalCarrier(staged.getType())) {
if (staged.getType().getCtClass().equals(Util.GLOBAL_CARRIER_CLASS)) {
invokeSource.append(
" return new "
+ Util.GLOBAL_CARRIER_CLASS.getName()
+ "("
+ construction
+ ");\n");
} else {
CarrierTransformer.transformCarrierChecked(staged.getType().getCtClass());
invokeSource.append(
" return new "
+ staged.getType().getCtClass().getName()
+ "(("
+ Util.DISAMBIGUATION_PARAMETER_CLASS.getName()
+ ") null, "
+ construction
+ ");\n");
}
} else if (Util.isLocalCarrier(staged.getType())) {
if (staged.getType().getCtClass().equals(Util.LOCAL_CARRIER_CLASS)) {
invokeSource.append(
" return new "
+ Util.LOCAL_CARRIER_CLASS.getName()
+ "("
+ construction
+ ");\n");
} else {
CarrierTransformer.transformCarrierChecked(staged.getType().getCtClass());
invokeSource.append(
" return new "
+ staged.getType().getCtClass().getName()
+ "(("
+ Util.DISAMBIGUATION_PARAMETER_CLASS.getName()
+ ") null, "
+ construction
+ ");\n");
}
} else if (staged.getType().isReference()) {
invokeSource.append(
" return new " + Util.LOCAL_CARRIER_CLASS.getName() + "(" + construction + ");\n");
} else {
invokeSource.append(" return " + construction + ";\n");
}
}
invokeSource.append("}");
CtMethod invoke = CtMethod.make(invokeSource.toString(), clazz);
clazz.addMethod(invoke);
// Make isomorphic hash code method
String isomorphicHashCodeSource =
"int isomorphicHashCode() {\n"
+ " if (!$0.isomorphicHashCodeHasBeenCalculated) {\n"
+ " super.isomorphicHashCode("
+ staged.getMember().hashCode()
+ ");\n"
+ " }"
+ " return $0.isomorphicHashCode;"
+ "}";
CtMethod isomorphicHashCode = CtMethod.make(isomorphicHashCodeSource, clazz);
clazz.addMethod(isomorphicHashCode);
// Make isomorphism check method
String isIsomorphicToSource =
"boolean isIsomorphicTo(java.util.IdentityHashMap identityMap, "
+ Util.EXPRESSION_CLASS.getName()
+ " expression) {\n"
+ " if (!(expression instanceof "
+ clazz.getName()
+ ")) { return false; }\n"
+ " return super.isIsomorphicTo(identityMap, expression);\n"
+ "}";
CtMethod isIsomorphicTo = CtMethod.make(isIsomorphicToSource, clazz);
clazz.addMethod(isIsomorphicTo);
// Make cache clone (with empty leaves to save memory) creation method
String cacheCloneSource =
Util.EXPRESSION_CLASS.getName()
+ " cacheClone(java.util.IdentityHashMap identityMap) {\n"
+ " "
+ Util.EXPRESSION_CLASS.getName()
+ " e = ("
+ Util.EXPRESSION_CLASS.getName()
+ ") identityMap.get(this);\n"
+ " if (e != null) {\n"
+ " return e;\n"
+ " } else {\n"
+ " "
+ Util.EXPRESSION_CLASS.getName()
+ "[] clonedArguments = super.cacheCloneArguments(identityMap);\n"
+ " if (clonedArguments != null) {\n"
+ " "
+ clazz.getName()
+ " s = new "
+ clazz.getName()
+ "(clonedArguments, $0.staticInfo, null);\n"
+ " s.isomorphicHashCode = $0.isomorphicHashCode();\n"
+ " s.isomorphicHashCodeHasBeenCalculated = true;\n"
+ " identityMap.put(this, s);\n"
+ " return s;\n"
+ " } else {\n"
+ " identityMap.put(this, this);\n"
+ " return this;\n"
+ " }\n"
+ " }\n"
+ "}";
CtMethod cacheClone = CtMethod.make(cacheCloneSource, clazz);
clazz.addMethod(cacheClone);
// Make language acceptance check method
String isAcceptedBySource =
"boolean isAcceptedBy("
+ CtClass.class.getName()
+ " language) { return $0.language.equals(language); }";
CtMethod isAcceptedBy = CtMethod.make(isAcceptedBySource, clazz);
clazz.addMethod(isAcceptedBy);
// Make polymorphic member retrieval method
String getMemberSource =
"public " + memberClassName + " getMember() { return $0." + memberName + "; }";
CtMethod getMember = CtMethod.make(getMemberSource, clazz);
clazz.addMethod(getMember);
// Make evaluation method
Class<?> closureInterface = getClosureInterface(staged.getType());
String evaluateSource;
if (Util.isGlobalCarrier(staged.getType()) && !staged.isStrict()) {
evaluateSource = "public void evaluate() { throw new UnsupportedOperationException(); }";
} else {
evaluateSource =
"public void evaluate() {\n"
+ " if ($0.value != null) { return; }\n"
+ " "
+ closureInterface.getName()
+ " closure;\n"
+ " "
+ Util.ENVIRONMENT_CLASS.getName()
+ " environment;\n"
+ " if ($0.closureHolder == null) {\n"
+ " "
+ Util.CLOSURE_HOLDER_CLASS.getName()
+ " cachedClosureHolder = "
+ GlobalCache.class.getName()
+ ".getCachedClosureHolder($0);\n"
+ " if (cachedClosureHolder == null) {\n"
+ " "
+ Util.BINDER_CLASS.getName()
+ " binder = new "
+ Util.BINDER_CLASS.getName()
+ "($0);\n"
+ " closure = "
+ staged.getLanguage().getName()
+ ".make"
+ closureInterface.getSimpleName()
+ "($0, binder, false);\n"
+ " environment = new "
+ Util.ENVIRONMENT_CLASS.getName()
+ "($0, binder.getBoundCount());\n"
+ " if (!binder.inspectionOccurred()) {\n"
+ " "
+ GlobalCache.class.getName()
+ ".cache($0, closure, binder.getBoundCount());\n"
+ " }\n"
+ " } else {\n"
+ " closure = ("
+ closureInterface.getName()
+ ") cachedClosureHolder.getClosure();\n"
+ " environment = new "
+ Util.ENVIRONMENT_CLASS.getName()
+ "($0, cachedClosureHolder.getEnvironmentSize());\n"
+ " }\n"
+ " } else {\n"
+ " closure = ("
+ closureInterface.getName()
+ ") $0.closureHolder.getClosure();\n"
+ " if (closure == null) {\n"
+ " "
+ Util.CLOSURE_HOLDER_CLASS.getName()
+ " cachedClosureHolder = "
+ GlobalCache.class.getName()
+ ".getCachedClosureHolder($0);\n"
+ " if (cachedClosureHolder == null) {\n"
+ " "
+ Util.BINDER_CLASS.getName()
+ " binder = new "
+ Util.BINDER_CLASS.getName()
+ "($0);\n"
+ " closure = "
+ staged.getLanguage().getName()
+ ".make"
+ closureInterface.getSimpleName()
+ "($0, binder, $0.closureHolder.isPermanent());\n"
+ " environment = new "
+ Util.ENVIRONMENT_CLASS.getName()
+ "($0, binder.getBoundCount());\n"
+ " if (!binder.inspectionOccurred()) {\n"
+ " $0.closureHolder.set(closure, binder.getBoundCount());\n"
+ " "
+ GlobalCache.class.getName()
+ ".cache($0, closure, binder.getBoundCount());\n"
+ " }\n"
+ " } else {\n"
+ " closure = ("
+ closureInterface.getName()
+ ") cachedClosureHolder.getClosure();\n"
+ " environment = new "
+ Util.ENVIRONMENT_CLASS.getName()
+ "($0, cachedClosureHolder.getEnvironmentSize());\n"
+ " $0.closureHolder.set(closure, cachedClosureHolder.getEnvironmentSize());\n"
+ " }\n"
+ " } else {\n"
+ " environment = new "
+ Util.ENVIRONMENT_CLASS.getName()
+ "($0, $0.closureHolder.getEnvironmentSize());\n"
+ " }\n"
+ " }\n"
+ (staged.getType().equals(Type.VOID)
? " closure.evaluate(environment);\n"
: " $0.value = "
+ Util.DISPATCHER_CLASS.getName()
+ "."
+ Util.getLiftMethodName(staged.getType())
+ "(closure.evaluate(environment));\n")
+ "}";
}
CtMethod evaluate = CtMethod.make(evaluateSource, clazz);
clazz.addMethod(evaluate);
clazz.toClass();
} catch (CannotCompileException | NotFoundException e) {
throw new RuntimeException(e);
}
return clazz;
}
