public static byte[] dumpInner() {
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
FieldVisitor fv;
MethodVisitor mv;
cw.visit(V1_4, ACC_SUPER, "pkg/Outer$Inner", null, "java/lang/Object", null);
cw.visitInnerClass("pkg/Outer$Inner", "pkg/Outer", "C", 0);
fv = cw.visitField(ACC_FINAL + ACC_SYNTHETIC, "this$0", "Lpkg/Outer;", null, null);
fv.visitEnd();
mv = cw.visitMethod(0, "<init>", "(Lpkg/Outer;)V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitVarInsn(ALOAD, 1);
mv.visitFieldInsn(PUTFIELD, "pkg/Outer$Inner", "this$0", "Lpkg/Outer;");
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
mv.visitInsn(RETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
cw.visitEnd();
return cw.toByteArray();
}
public static byte[] dump1() {
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
FieldVisitor fv;
MethodVisitor mv;
cw.visit(V1_4, ACC_SUPER, "pkg/Outer$1", null, "pkg/Outer", null);
cw.visitOuterClass("pkg/Outer", "m", "()V");
cw.visitInnerClass("pkg/Outer$1", null, null, 0);
fv = cw.visitField(ACC_FINAL + ACC_SYNTHETIC, "this$0", "Lpkg/Outer;", null, null);
fv.visitEnd();
mv = cw.visitMethod(0, "<init>", "(Lpkg/Outer;)V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitVarInsn(ALOAD, 1);
mv.visitFieldInsn(PUTFIELD, "pkg/Outer$1", "this$0", "Lpkg/Outer;");
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, "pkg/Outer", "<init>", "()V");
mv.visitInsn(RETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
mv.visitCode();
mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V");
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, "pkg/Outer$1", "this$0", "Lpkg/Outer;");
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/lang/StringBuilder",
"append",
"(Ljava/lang/Object;)Ljava/lang/StringBuilder;");
mv.visitLdcInsn(" ");
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/lang/StringBuilder",
"append",
"(Ljava/lang/String;)Ljava/lang/StringBuilder;");
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, "pkg/Outer$1", "this$0", "Lpkg/Outer;");
mv.visitMethodInsn(INVOKESTATIC, "pkg/Outer", "access$000", "(Lpkg/Outer;)I");
mv.visitMethodInsn(
INVOKEVIRTUAL, "java/lang/StringBuilder", "append", "(I)Ljava/lang/StringBuilder;");
mv.visitMethodInsn(
INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;");
mv.visitInsn(ARETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
cw.visitEnd();
return cw.toByteArray();
}
public void visitEnd() {
if (!isInterface) {
FieldVisitor fv = cv.visitField(ACC_PUBLIC + ACC_STATIC, "timer", "J", null, null);
if (fv != null) {
fv.visitEnd();
}
cv.visitEnd();
}
}
@Override
public void visitAttribute(final Attribute attr) {
checkEnd();
if (attr == null) {
throw new IllegalArgumentException("Invalid attribute (must not be null)");
}
super.visitAttribute(attr);
}
public byte[] dump() {
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
FieldVisitor fv;
MethodVisitor mv;
cw.visit(
V1_4, ACC_PUBLIC + ACC_SUPER + ACC_DEPRECATED, "pkg/Outer", null, "java/lang/Object", null);
cw.visitInnerClass("pkg/Outer$Inner", "pkg/Outer", "C", 0);
cw.visitInnerClass("pkg/Outer$1", null, null, 0);
fv = cw.visitField(ACC_PRIVATE + ACC_DEPRECATED, "i", "I", null, null);
fv.visitEnd();
mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
mv.visitInsn(RETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
mv = cw.visitMethod(ACC_DEPRECATED, "m", "()V", null, null);
mv.visitCode();
mv.visitTypeInsn(NEW, "pkg/Outer$1");
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, "pkg/Outer$1", "<init>", "(Lpkg/Outer;)V");
mv.visitInsn(POP);
mv.visitInsn(RETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
mv = cw.visitMethod(ACC_STATIC + ACC_SYNTHETIC, "access$000", "(Lpkg/Outer;)I", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, "pkg/Outer", "i", "I");
mv.visitInsn(IRETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
cw.visitEnd();
return cw.toByteArray();
}
@Override
public Object visitVarDec(VarDec varDec, Object arg) throws Exception {
// System.out.println(varDec.type.getJVMType());
if (varDec.type.getJVMType().startsWith("Ljava/util/List"))
fv = cw.visitField(ACC_STATIC, varDec.identToken.getText(), emptyList, null, null);
else
fv =
cw.visitField(
ACC_STATIC, varDec.identToken.getText(), varDec.type.getJVMType(), null, null);
fv.visitEnd();
return null;
// throw new UnsupportedOperationException("code generation not yet implemented");
}
@Override
public void visitAttribute(Attribute attr) {
super.visitAttribute(attr);
}
@Override
public void visitEnd() {
super.visitEnd();
}
@Override
public int hashCode() {
return fieldVisitor.hashCode();
}
public void visitAttribute(Attribute attr) {
fv1.visitAttribute(attr);
fv2.visitAttribute(attr);
}
private static byte[] compileBytes(
Rule rule,
Class helperClass,
String helperName,
String compiledHelperName,
boolean compileToBytecode)
throws Exception {
ClassWriter cw = new ClassWriter(0);
FieldVisitor fv;
MethodVisitor mv;
AnnotationVisitor av0;
// create the class as a subclass of the rule helper class, appending Compiled to the front
// of the class name and a unique number to the end of the class helperName
// also ensure it implements the HelperAdapter interface
//
// public class foo.bar.Compiled_<helper>_<NNN> extends foo.bar.<helper> implements
// HelperAdapter
cw.visit(
V1_5,
ACC_PUBLIC + ACC_SUPER,
compiledHelperName,
null,
helperName,
new String[] {"org/jboss/byteman/rule/helper/HelperAdapter"});
// we need to install the source file name
{
String fullFileName = rule.getFile();
int idx = fullFileName.lastIndexOf(java.io.File.separatorChar);
String basicFileName = (idx < 0 ? fullFileName : fullFileName.substring(idx + 1));
String debug = "// compiled from: " + fullFileName + "\n// generated by Byteman\n";
cw.visitSource(basicFileName, debug);
}
{
// we need a Hashmap field to hold the bindings
//
// private HashMap<String, Object> bindingMap;
fv =
cw.visitField(
ACC_PRIVATE,
"bindingMap",
"Ljava/util/HashMap;",
"Ljava/util/HashMap<Ljava/lang/String;Ljava/lang/Object;>;",
null);
fv.visitEnd();
}
{
// and a rule field to hold the rule
//
// private Rule rule;
fv =
cw.visitField(
ACC_PRIVATE,
"rule",
"Lorg/jboss/byteman/rule/Rule;",
"Lorg/jboss/byteman/rule/Rule;",
null);
fv.visitEnd();
}
{
// we need a constructor which takes a Rule as argument
// if the helper implements a constructor which takes a Rule as argument then we invoke it
// otherwise we invoke the empty helper constructor
Constructor superConstructor = null;
try {
superConstructor = helperClass.getDeclaredConstructor(Rule.class);
} catch (NoSuchMethodException e) {
// hmm, ok see if there is an empty constructor
} catch (SecurityException e) {
throw new CompileException(
"Compiler.compileBytes : unable to access constructor for helper class "
+ helperClass.getCanonicalName());
}
boolean superWantsRule = (superConstructor != null);
if (!superWantsRule) {
try {
superConstructor = helperClass.getDeclaredConstructor();
} catch (NoSuchMethodException e) {
throw new CompileException(
"Compiler.compileBytes : no valid constructor found for helper class "
+ helperClass.getCanonicalName());
} catch (SecurityException e) {
throw new CompileException(
"Compiler.compileBytes : unable to access constructor for helper class "
+ helperClass.getCanonicalName());
}
}
//
// public Compiled<helper>_<NNN>()Rule rule)
mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(Lorg/jboss/byteman/rule/Rule;)V", null, null);
mv.visitCode();
// super();
//
// or
//
// super(Rule);
if (superWantsRule) {
mv.visitVarInsn(ALOAD, 0);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKESPECIAL, helperName, "<init>", "(Lorg/jboss/byteman/rule/Rule;)V");
} else {
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, helperName, "<init>", "()V");
}
// bindingMap = new HashMap<String, Object);
mv.visitVarInsn(ALOAD, 0);
mv.visitTypeInsn(NEW, "java/util/HashMap");
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKESPECIAL, "java/util/HashMap", "<init>", "()V");
mv.visitFieldInsn(PUTFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
// this.rule = rule
mv.visitVarInsn(ALOAD, 0);
mv.visitVarInsn(ALOAD, 1);
mv.visitFieldInsn(PUTFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
// return;
mv.visitInsn(RETURN);
mv.visitMaxs(3, 2);
mv.visitEnd();
}
{
// create the execute method
//
// public void execute(Bindings bindings, Object recipient, Object[] args) throws
// ExecuteException
mv =
cw.visitMethod(
ACC_PUBLIC,
"execute",
"(Ljava/lang/Object;[Ljava/lang/Object;)V",
null,
new String[] {"org/jboss/byteman/rule/exception/ExecuteException"});
mv.visitCode();
// if (Transformer.isVerbose())
mv.visitMethodInsn(INVOKESTATIC, "org/jboss/byteman/agent/Transformer", "isVerbose", "()Z");
Label l0 = new Label();
mv.visitJumpInsn(IFEQ, l0);
// then
// System.out.println(rule.getName() + " execute");
mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "()V");
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
mv.visitMethodInsn(
INVOKEVIRTUAL, "org/jboss/byteman/rule/Rule", "getName", "()Ljava/lang/String;");
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/lang/StringBuilder",
"append",
"(Ljava/lang/String;)Ljava/lang/StringBuilder;");
mv.visitLdcInsn(" execute()");
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/lang/StringBuilder",
"append",
"(Ljava/lang/String;)Ljava/lang/StringBuilder;");
mv.visitMethodInsn(
INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;");
mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V");
// end if
mv.visitLabel(l0);
Bindings bindings = rule.getBindings();
Iterator<Binding> iterator = bindings.iterator();
while (iterator.hasNext()) {
Binding binding = iterator.next();
String name = binding.getName();
if (binding.isAlias()) {
// lookups and updates will use the aliased name
continue;
}
if (binding.isHelper()) {
// bindingMap.put(name, this);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
mv.visitLdcInsn(name);
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/util/HashMap",
"put",
"(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
mv.visitInsn(POP);
} else if (binding.isRecipient()) {
// bindingMap.put(name, recipient);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
mv.visitLdcInsn(name);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/util/HashMap",
"put",
"(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
mv.visitInsn(POP);
// } else if (binding.isParam() || binding.isLocalVar() || binding.isReturn() ||
// binding.isThrowable() || binding.isParamCount() || binding.isParamArray())
// {
} else if (!binding.isBindVar()) {
// bindingMap.put(name, args[binding.getCallArrayIndex()]);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
mv.visitLdcInsn(name);
mv.visitVarInsn(ALOAD, 2);
mv.visitLdcInsn(binding.getCallArrayIndex());
mv.visitInsn(AALOAD);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/util/HashMap",
"put",
"(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
mv.visitInsn(POP);
}
}
// execute0()
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKEVIRTUAL, compiledHelperName, "execute0", "()V");
// now restore update bindings
iterator = bindings.iterator();
while (iterator.hasNext()) {
Binding binding = iterator.next();
if (binding.isAlias()) {
continue;
}
String name = binding.getName();
if (binding.isUpdated()) {
// if (binding.isParam() || binding.isLocalVar() || binding.isReturn()) {
if (!binding.isBindVar()) {
int idx = binding.getCallArrayIndex();
// Object value = bindingMap.get(name);
// args[idx] = value;
mv.visitVarInsn(ALOAD, 2); // args
mv.visitLdcInsn(idx);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
mv.visitLdcInsn(name);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/util/HashMap",
"get",
"(Ljava/lang/Object;)Ljava/lang/Object;");
mv.visitInsn(AASTORE);
}
}
}
// return
mv.visitInsn(RETURN);
mv.visitMaxs(4, 3);
mv.visitEnd();
}
{
// create the setBinding method
//
// public void setBinding(String name, Object value)
mv =
cw.visitMethod(
ACC_PUBLIC, "setBinding", "(Ljava/lang/String;Ljava/lang/Object;)V", null, null);
mv.visitCode();
// bindingMap.put(name, value);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
mv.visitVarInsn(ALOAD, 1);
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/util/HashMap",
"put",
"(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
mv.visitInsn(POP);
// return
mv.visitInsn(RETURN);
mv.visitMaxs(3, 3);
mv.visitEnd();
}
{
// create the getBinding method
//
// public Object getBinding(String name)
mv =
cw.visitMethod(
ACC_PUBLIC, "getBinding", "(Ljava/lang/String;)Ljava/lang/Object;", null, null);
mv.visitCode();
// {TOS} <== bindingMap.get(name);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "bindingMap", "Ljava/util/HashMap;");
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(
INVOKEVIRTUAL, "java/util/HashMap", "get", "(Ljava/lang/Object;)Ljava/lang/Object;");
// return {TOS}
mv.visitInsn(ARETURN);
mv.visitMaxs(2, 2);
mv.visitEnd();
}
{
// create the getName method
//
// public String getName()
mv = cw.visitMethod(ACC_PUBLIC, "getName", "()Ljava/lang/String;", null, null);
mv.visitCode();
// {TOS} <== rule.getName()
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
mv.visitMethodInsn(
INVOKEVIRTUAL, "org/jboss/byteman/rule/Rule", "getName", "()Ljava/lang/String;");
// return {TOS}
mv.visitInsn(ARETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
// create the getAccessibleField method
//
// public Object getAccessibleField(Object owner, int fieldIndex)
{
mv =
cw.visitMethod(
ACC_PUBLIC,
"getAccessibleField",
"(Ljava/lang/Object;I)Ljava/lang/Object;",
null,
null);
mv.visitCode();
// {TOS} <== rule.getAccessibleField(owner, fieldIndex);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
mv.visitVarInsn(ALOAD, 1);
mv.visitVarInsn(ILOAD, 2);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"org/jboss/byteman/rule/Rule",
"getAccessibleField",
"(Ljava/lang/Object;I)Ljava/lang/Object;");
// return {TOS}
mv.visitInsn(ARETURN);
mv.visitMaxs(3, 3);
mv.visitEnd();
}
// create the setAccessibleField method
//
// public void setAccessibleField(Object owner, Object value, int fieldIndex)
// rule.setAccessibleField(owner, value, fieldIndex);
{
mv =
cw.visitMethod(
ACC_PUBLIC,
"setAccessibleField",
"(Ljava/lang/Object;Ljava/lang/Object;I)V",
null,
null);
mv.visitCode();
// rule.setAccessibleField(owner, value, fieldIndex);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
mv.visitVarInsn(ALOAD, 1);
mv.visitVarInsn(ALOAD, 2);
mv.visitVarInsn(ILOAD, 3);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"org/jboss/byteman/rule/Rule",
"setAccessibleField",
"(Ljava/lang/Object;Ljava/lang/Object;I)V");
// return
mv.visitInsn(RETURN);
mv.visitMaxs(4, 4);
mv.visitEnd();
}
// create the invokeAccessibleMethod method
//
// public Object invokeAccessibleMethod(Object target, Object[] args, int methodIndex)
// {TOS} <== rule.invokeAccessibleMethod(target, args, methodIndex);
{
mv =
cw.visitMethod(
ACC_PUBLIC,
"invokeAccessibleMethod",
"(Ljava/lang/Object;[Ljava/lang/Object;I)Ljava/lang/Object;",
null,
null);
mv.visitCode();
// rule.invokeAccessibleMethod(target, args, fieldIndex);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
mv.visitVarInsn(ALOAD, 1);
mv.visitVarInsn(ALOAD, 2);
mv.visitVarInsn(ILOAD, 3);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"org/jboss/byteman/rule/Rule",
"invokeAccessibleMethod",
"(Ljava/lang/Object;[Ljava/lang/Object;I)Ljava/lang/Object;");
// return {TOS}
mv.visitInsn(ARETURN);
mv.visitMaxs(4, 4);
mv.visitEnd();
}
if (compileToBytecode) {
// we generate a single execute0 method if we want to run compiled and get
// the event, condiiton and action to insert the relevant bytecode to implement
// bind(), test() and fire()
{
// create the execute0() method
//
// private void execute0()
mv =
cw.visitMethod(
ACC_PRIVATE,
"execute0",
"()V",
null,
new String[] {"org/jboss/byteman/rule/exception/ExecuteException"});
mv.visitCode();
CompileContext compileContext = new CompileContext(mv);
// make sure we set the first line number before generating any code
compileContext.notifySourceLine(rule.getLine());
compileContext.addLocalCount(3); // for this and 2 object args
// bind();
rule.getEvent().compile(mv, compileContext);
// if (test())
rule.getCondition().compile(mv, compileContext);
Label l0 = new Label();
mv.visitJumpInsn(IFEQ, l0);
compileContext.addStackCount(-1);
// then
rule.getAction().compile(mv, compileContext);
// fire();
// end if
mv.visitLabel(l0);
// this will match the ENDRULE line
compileContext.notifySourceEnd();
// return
mv.visitInsn(RETURN);
// need to specify correct Maxs values
mv.visitMaxs(compileContext.getStackMax(), compileContext.getLocalMax());
mv.visitEnd();
}
} else {
// we generate the following methods if we want to run interpreted
{
// create the execute0() method
//
// private void execute0()
mv =
cw.visitMethod(
ACC_PRIVATE,
"execute0",
"()V",
null,
new String[] {"org/jboss/byteman/rule/exception/ExecuteException"});
mv.visitCode();
// bind();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, compiledHelperName, "bind", "()V");
// if (test())
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, compiledHelperName, "test", "()Z");
Label l0 = new Label();
mv.visitJumpInsn(IFEQ, l0);
// then
// fire();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, compiledHelperName, "fire", "()V");
// end if
mv.visitLabel(l0);
// return
mv.visitInsn(RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
{
// create the bind method
//
// private void bind()
mv =
cw.visitMethod(
ACC_PRIVATE,
"bind",
"()V",
null,
new String[] {"org/jboss/byteman/rule/exception/ExecuteException"});
mv.visitCode();
// rule.getEvent().interpret(this);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
mv.visitMethodInsn(
INVOKEVIRTUAL,
"org/jboss/byteman/rule/Rule",
"getEvent",
"()Lorg/jboss/byteman/rule/Event;");
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"org/jboss/byteman/rule/Event",
"interpret",
"(Lorg/jboss/byteman/rule/helper/HelperAdapter;)Ljava/lang/Object;");
mv.visitInsn(RETURN);
mv.visitMaxs(2, 1);
mv.visitEnd();
}
{
// create the test method
//
// private boolean test()
mv =
cw.visitMethod(
ACC_PRIVATE,
"test",
"()Z",
null,
new String[] {"org/jboss/byteman/rule/exception/ExecuteException"});
mv.visitCode();
// {TOS} <== rule.getCondition().interpret(this);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
mv.visitMethodInsn(
INVOKEVIRTUAL,
"org/jboss/byteman/rule/Rule",
"getCondition",
"()Lorg/jboss/byteman/rule/Condition;");
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"org/jboss/byteman/rule/Condition",
"interpret",
"(Lorg/jboss/byteman/rule/helper/HelperAdapter;)Ljava/lang/Object;");
mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Boolean");
// unbox the returned Boolean
mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Boolean", "booleanValue", "()Z");
// return {TOS}
mv.visitInsn(IRETURN);
mv.visitMaxs(2, 1);
mv.visitEnd();
}
{
// create the fire method
//
// private void fire()
mv =
cw.visitMethod(
ACC_PRIVATE,
"fire",
"()V",
null,
new String[] {"org/jboss/byteman/rule/exception/ExecuteException"});
mv.visitCode();
// rule.getAction().interpret(this);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, compiledHelperName, "rule", "Lorg/jboss/byteman/rule/Rule;");
mv.visitMethodInsn(
INVOKEVIRTUAL,
"org/jboss/byteman/rule/Rule",
"getAction",
"()Lorg/jboss/byteman/rule/Action;");
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"org/jboss/byteman/rule/Action",
"interpret",
"(Lorg/jboss/byteman/rule/helper/HelperAdapter;)Ljava/lang/Object;");
// return
mv.visitInsn(RETURN);
mv.visitMaxs(2, 1);
mv.visitEnd();
}
}
cw.visitEnd();
return cw.toByteArray();
}
public static void generateField(ClassWriter classWriter, Property<Class<?>, Method> property) {
FieldVisitor fv =
classWriter.visitField(
ACC_PRIVATE, property.getName(), Type.getDescriptor(property.getType()), null, null);
fv.visitEnd();
}
/**
* Generate bytecodes for runtime class
*
* @return byte array containing bytecodes for runtime class
* @throws Exception
*/
public byte[] genBytecode() throws Exception {
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
FieldVisitor fv = null;
MethodVisitor mv = null;
ImplHelper.FieldDesc[] fieldDesc = ImplHelper.getFieldDesc(clazz);
int isVariableLengthLayout = 0;
final boolean itf = false;
String superImpl = "java/lang/Object";
if (null == fieldDesc) {
createBody = false;
/* find layout superType */
for (Class<?> c : clazz.getInterfaces()) {
if (Layout.class.isAssignableFrom(c)) {
superImpl = ImplHelper.getImplClassName(c);
}
}
}
if (createBody) {
eaCW.visit(
52,
ACC_SUPER,
implClassName + "$EffectiveAddressImpl",
null,
"java/lang/Object",
new String[] {interfaceClassName + "$EffectiveAddress"});
eaCW.visitInnerClass(
interfaceClassName + "$EffectiveAddress",
interfaceClassName,
"EffectiveAddress",
ACC_PUBLIC + ACC_STATIC + ACC_ABSTRACT + ACC_INTERFACE);
eaCW.visitInnerClass(
implClassName + "$EffectiveAddressImpl", implClassName, "EffectiveAddressImpl", 0);
{
fv =
eaCW.visitField(
ACC_FINAL + ACC_SYNTHETIC, "this$0", "L" + implClassName + ";", null, null);
fv.visitEnd();
}
{
eaMV = eaCW.visitMethod(0, "<init>", "(L" + implClassName + ";)V", null, null);
eaMV.visitCode();
eaMV.visitVarInsn(ALOAD, 0);
eaMV.visitVarInsn(ALOAD, 1);
eaMV.visitFieldInsn(
PUTFIELD, implClassName + "$EffectiveAddressImpl", "this$0", "L" + implClassName + ";");
eaMV.visitVarInsn(ALOAD, 0);
eaMV.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
eaMV.visitInsn(RETURN);
eaMV.visitMaxs(2, 2);
eaMV.visitEnd();
}
}
cw.visit(
V1_8,
ACC_PUBLIC + ACC_SUPER,
implClassName,
null,
superImpl,
new String[] {interfaceClassName});
if (createBody) {
cw.visitInnerClass(
implClassName + "$EffectiveAddressImpl", implClassName, "EffectiveAddressImpl", 0);
}
{
mv = cw.visitMethod(0, "<init>", "()V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, superImpl, "<init>", "()V", false);
mv.visitInsn(RETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
if (!createBody) {
{
fv =
cw.visitField(
ACC_PRIVATE + ACC_FINAL + ACC_STATIC, "unsafe", "Lsun/misc/Unsafe;", null, null);
fv.visitEnd();
}
cw.visitEnd();
return cw.toByteArray();
}
for (int i = 0; i < fieldDesc.length; i++) {
startWayPointCounter = wayPointCounter;
if (!ImplHelper.isPointerType(fieldDesc[i].rawType)) {
if (ImplHelper.isTypePrimitive(fieldDesc[i].sig)) {
// getter
mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", itf);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", itf);
if (wayPointCounter > 0) {
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL, implClassName, "waypoint" + (wayPointCounter - 1), "()J", false);
mv.visitInsn(LADD);
}
mv.visitLdcInsn(fieldDesc[i].offset);
mv.visitInsn(LADD);
mv.visitMethodInsn(
INVOKESTATIC,
"com/ibm/layout/gen/UnsafeImplHelper",
"load" + fieldDesc[i].endian + ImplHelper.fieldSig2MethodType(fieldDesc[i].sig),
"(Ljava/lang/Object;J)" + fieldDesc[i].sig,
itf);
if (fieldDesc[i].sig == "D") {
mv.visitInsn(DRETURN);
} else if (fieldDesc[i].sig == "J") {
mv.visitInsn(LRETURN);
} else if (fieldDesc[i].sig == "F") {
mv.visitInsn(FRETURN);
} else {
mv.visitInsn(IRETURN);
}
mv.visitMaxs(5, 1);
mv.visitEnd();
// setter
mv =
cw.visitMethod(
ACC_PUBLIC, fieldDesc[i].name, "(" + fieldDesc[i].sig + ")V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getData", "()[B", itf);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitMethodInsn(INVOKEVIRTUAL, "com/ibm/layout/Location", "getOffset", "()J", itf);
mv.visitLdcInsn(fieldDesc[i].offset);
if (wayPointCounter > 0) {
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL, implClassName, "waypoint" + (wayPointCounter - 1), "()J", false);
mv.visitInsn(LADD);
}
mv.visitInsn(LADD);
if (fieldDesc[i].sig == "D") {
mv.visitVarInsn(DLOAD, 1);
} else if (fieldDesc[i].sig == "J") {
mv.visitVarInsn(LLOAD, 1);
} else if (fieldDesc[i].sig == "F") {
mv.visitVarInsn(FLOAD, 1);
} else {
mv.visitVarInsn(ILOAD, 1);
}
mv.visitMethodInsn(
INVOKESTATIC,
"com/ibm/layout/gen/UnsafeImplHelper",
"store" + fieldDesc[i].endian + ImplHelper.fieldSig2MethodType(fieldDesc[i].sig),
"(Ljava/lang/Object;J" + fieldDesc[i].sig + ")V",
itf);
mv.visitInsn(RETURN);
mv.visitMaxs(5, 2);
mv.visitEnd();
} else if (fieldDesc[i].repeatCountMember != null) {
{
isVariableLengthLayout++;
ImplHelper.FieldDesc repeatCountField =
ImplHelper.findField(fieldDesc[i].repeatCountMember, fieldDesc);
mv =
cw.visitMethod(
ACC_PUBLIC,
fieldDesc[i].name,
"()" + fieldDesc[i].sig,
"()" + fieldDesc[i].elementImpl,
null);
mv.visitCode();
if ("" != fieldDesc[i].elementImpl) {
mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl);
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", false);
mv.visitVarInsn(ASTORE, 1);
mv.visitTypeInsn(NEW, fieldDesc[i].impl);
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 0);
if (fieldDesc[i].priviliedgedUserClass) {
FieldDesc header = ImplHelper.findField(fieldDesc[i].repeatCountMember, fieldDesc);
boolean primitivePointer = ImplHelper.isTypePrimitive(header.sig);
mv.visitMethodInsn(
INVOKEVIRTUAL,
implClassName,
"EA",
"()L" + interfaceClassName + "$EffectiveAddress;",
false);
if (primitivePointer) {
mv.visitMethodInsn(
INVOKEINTERFACE,
interfaceClassName + "$EffectiveAddress",
fieldDesc[i].repeatCountMember,
"()L" + header.pointerSig + ";",
true);
} else {
mv.visitMethodInsn(
INVOKEINTERFACE,
interfaceClassName + "$EffectiveAddress",
fieldDesc[i].repeatCountMember,
"()Lcom/ibm/layout/Pointer;",
true);
}
if (fieldDesc[i].isVarSized) {
mv.visitMethodInsn(
INVOKESPECIAL,
fieldDesc[i].impl,
"<init>",
"(Lcom/ibm/layout/PointerType;)V",
false);
} else {
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(
INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", false);
mv.visitMethodInsn(
INVOKESPECIAL,
fieldDesc[i].impl,
"<init>",
"(Lcom/ibm/layout/PointerType;J)V",
false);
}
} else {
mv.visitMethodInsn(
INVOKEVIRTUAL,
implClassName,
fieldDesc[i].repeatCountMember,
"()" + repeatCountField.sig,
false);
if (!repeatCountField.sig.equals("J")) {
mv.visitInsn(I2L);
}
if (fieldDesc[i].isVarSized) {
mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(J)V", false);
} else {
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(
INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", false);
mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", false);
}
}
mv.visitVarInsn(ASTORE, 2);
mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitLdcInsn(fieldDesc[i].offset);
if (wayPointCounter > 0) {
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL, implClassName, "waypoint" + (wayPointCounter - 1), "()J", false);
mv.visitInsn(LADD);
}
mv.visitMethodInsn(
INVOKESPECIAL,
"com/ibm/layout/Location",
"<init>",
"(Lcom/ibm/layout/Location;J)V",
false);
mv.visitVarInsn(ASTORE, 3);
mv.visitVarInsn(ALOAD, 2);
mv.visitVarInsn(ALOAD, 3);
mv.visitMethodInsn(
INVOKEINTERFACE,
"com/ibm/layout/VLArray",
"bindLocation",
"(Lcom/ibm/layout/Location;)V",
true);
mv.visitVarInsn(ALOAD, 2);
mv.visitInsn(ARETURN);
if (fieldDesc[i].priviliedgedUserClass) {
mv.visitMaxs(7, 4);
} else {
mv.visitMaxs(6, 4);
}
mv.visitEnd();
} else {
throw new RuntimeException("primitive VLAs are unsupported");
}
if ((isVariableLengthLayout == 1) && ((fieldDesc.length - 1) == i)) {
mv =
cw.visitMethod(
ACC_PUBLIC,
"bindLocation",
"(Lcom/ibm/layout/Location;" + repeatCountField.sig + ")V",
null,
new String[] {"java/lang/UnsupportedOperationException"});
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitVarInsn(ALOAD, 1);
mv.visitFieldInsn(PUTFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitVarInsn(ALOAD, 0);
if (repeatCountField.sig.equals("J")) {
mv.visitVarInsn(LLOAD, 2);
} else {
mv.visitVarInsn(ILOAD, 2);
}
mv.visitMethodInsn(
INVOKEVIRTUAL,
implClassName,
fieldDesc[i].repeatCountMember,
"(" + repeatCountField.sig + ")V",
false);
mv.visitInsn(RETURN);
mv.visitMaxs(2, 3);
mv.visitEnd();
}
if (wayPointCounter == 0) {
mv = cw.visitMethod(ACC_PRIVATE, "waypoint" + wayPointCounter++, "()J", null, null);
mv.visitCode();
mv.visitLdcInsn(fieldDesc[i].offset);
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKEVIRTUAL,
this.implClassName,
fieldDesc[i].name,
"()" + fieldDesc[i].sig,
false);
mv.visitMethodInsn(INVOKEINTERFACE, "com/ibm/layout/VLArray", "sizeof", "()J", true);
mv.visitInsn(LADD);
mv.visitInsn(LRETURN);
mv.visitMaxs(4, 1);
mv.visitEnd();
} else {
long oldWayPoint = wayPointCounter - 1;
mv = cw.visitMethod(ACC_PRIVATE, "waypoint" + wayPointCounter++, "()J", null, null);
mv.visitCode();
mv.visitLdcInsn(fieldDesc[i].offset);
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKEVIRTUAL,
this.implClassName,
fieldDesc[i].name,
"()" + fieldDesc[i].sig,
false);
mv.visitMethodInsn(INVOKEINTERFACE, "com/ibm/layout/VLArray", "sizeof", "()J", true);
mv.visitInsn(LADD);
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL, this.implClassName, "waypoint" + oldWayPoint, "()J", false);
mv.visitInsn(LADD);
mv.visitInsn(LRETURN);
mv.visitMaxs(4, 1);
mv.visitEnd();
}
{
// access for EA class
mv =
cw.visitMethod(
ACC_STATIC + ACC_SYNTHETIC,
"access$" + (wayPointCounter),
"(L" + this.implClassName + ";)J",
null,
null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL,
this.implClassName,
"waypoint" + (wayPointCounter - 1),
"()J",
false);
mv.visitInsn(LRETURN);
mv.visitMaxs(2, 1);
mv.visitEnd();
}
}
} else if (fieldDesc[i].dims == null) {
/* nested field */
mv = cw.visitMethod(ACC_PUBLIC, fieldDesc[i].name, "()" + fieldDesc[i].sig, null, null);
mv.visitCode();
mv.visitTypeInsn(NEW, ImplHelper.getImplClassName(fieldDesc[i].rawType));
mv.visitInsn(DUP);
mv.visitMethodInsn(
INVOKESPECIAL,
ImplHelper.getImplClassName(fieldDesc[i].rawType),
"<init>",
"()V",
itf);
mv.visitVarInsn(ASTORE, 1);
mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitLdcInsn(fieldDesc[i].offset);
if (wayPointCounter > 0) {
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL, implClassName, "waypoint" + (wayPointCounter - 1), "()J", false);
mv.visitInsn(LADD);
}
mv.visitMethodInsn(
INVOKESPECIAL,
"com/ibm/layout/Location",
"<init>",
"(Lcom/ibm/layout/Location;J)V",
itf);
mv.visitVarInsn(ASTORE, 2);
mv.visitVarInsn(ALOAD, 1);
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(
INVOKEVIRTUAL,
ImplHelper.getImplClassName(fieldDesc[i].rawType),
"bindLocation",
"(Lcom/ibm/layout/Location;)V",
itf);
mv.visitVarInsn(ALOAD, 1);
mv.visitInsn(ARETURN);
mv.visitMaxs(5, 3);
mv.visitEnd();
} else if (fieldDesc[i].dims.length == 1) {
mv =
cw.visitMethod(
ACC_PUBLIC,
fieldDesc[i].name,
"()" + fieldDesc[i].sig,
"()" + fieldDesc[i].sigGeneric,
null);
mv.visitCode();
if ("" != fieldDesc[i].elementImpl) {
mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl);
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", itf);
mv.visitVarInsn(ASTORE, 1);
mv.visitTypeInsn(NEW, fieldDesc[i].impl);
mv.visitInsn(DUP);
mv.visitLdcInsn(fieldDesc[i].dims[0]);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", itf);
mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", itf);
mv.visitVarInsn(ASTORE, 2);
mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(
GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitLdcInsn(fieldDesc[i].offset);
if (wayPointCounter > 0) {
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL, implClassName, "waypoint" + (wayPointCounter - 1), "()J", false);
mv.visitInsn(LADD);
}
mv.visitMethodInsn(
INVOKESPECIAL,
"com/ibm/layout/Location",
"<init>",
"(Lcom/ibm/layout/Location;J)V",
itf);
mv.visitVarInsn(ASTORE, 3);
mv.visitVarInsn(ALOAD, 2);
mv.visitVarInsn(ALOAD, 3);
mv.visitMethodInsn(
INVOKEVIRTUAL,
fieldDesc[i].impl,
"bindLocation",
"(Lcom/ibm/layout/Location;)V",
itf);
mv.visitVarInsn(ALOAD, 2);
mv.visitInsn(ARETURN);
mv.visitMaxs(6, 4);
mv.visitEnd();
} else {
mv.visitTypeInsn(NEW, fieldDesc[i].impl);
mv.visitInsn(DUP);
mv.visitLdcInsn(fieldDesc[i].dims[0]);
mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(J)V", itf);
mv.visitVarInsn(ASTORE, 1);
mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(
GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitLdcInsn(fieldDesc[i].offset);
if (wayPointCounter > 0) {
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL, implClassName, "waypoint" + (wayPointCounter - 1), "()J", false);
mv.visitInsn(LADD);
}
mv.visitMethodInsn(
INVOKESPECIAL,
"com/ibm/layout/Location",
"<init>",
"(Lcom/ibm/layout/Location;J)V",
itf);
mv.visitVarInsn(ASTORE, 2);
mv.visitVarInsn(ALOAD, 1);
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(
INVOKEVIRTUAL,
fieldDesc[i].impl,
"bindLocation",
"(Lcom/ibm/layout/Location;)V",
itf);
mv.visitVarInsn(ALOAD, 1);
mv.visitInsn(ARETURN);
mv.visitMaxs(5, 3);
mv.visitEnd();
}
} else if (fieldDesc[i].dims.length == 2) {
if ("" != fieldDesc[i].elementImpl) {
mv =
cw.visitMethod(
ACC_PUBLIC,
fieldDesc[i].name,
"()" + fieldDesc[i].sig,
"()" + fieldDesc[i].sigGeneric,
null);
mv.visitCode();
mv.visitTypeInsn(NEW, fieldDesc[i].elementImpl);
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].elementImpl, "<init>", "()V", itf);
mv.visitVarInsn(ASTORE, 1);
mv.visitTypeInsn(NEW, fieldDesc[i].impl);
mv.visitInsn(DUP);
mv.visitLdcInsn(fieldDesc[i].dims[0]);
mv.visitLdcInsn(fieldDesc[i].dims[1]);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(INVOKEVIRTUAL, fieldDesc[i].elementImpl, "sizeof", "()J", itf);
mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJJ)V", itf);
mv.visitVarInsn(ASTORE, 2);
mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(
GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitLdcInsn(fieldDesc[i].offset);
if (wayPointCounter > 0) {
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL, implClassName, "waypoint" + (wayPointCounter - 1), "()J", false);
mv.visitInsn(LADD);
}
mv.visitMethodInsn(
INVOKESPECIAL,
"com/ibm/layout/Location",
"<init>",
"(Lcom/ibm/layout/Location;J)V",
itf);
mv.visitVarInsn(ASTORE, 3);
mv.visitVarInsn(ALOAD, 2);
mv.visitVarInsn(ALOAD, 3);
mv.visitMethodInsn(
INVOKEVIRTUAL,
fieldDesc[i].impl,
"bindLocation",
"(Lcom/ibm/layout/Location;)V",
itf);
mv.visitVarInsn(ALOAD, 2);
mv.visitInsn(ARETURN);
mv.visitMaxs(8, 4);
mv.visitEnd();
} else {
mv =
cw.visitMethod(
ACC_PUBLIC,
fieldDesc[i].name,
"()" + fieldDesc[i].sig,
"()" + fieldDesc[i].sigGeneric,
null);
mv.visitCode();
mv.visitTypeInsn(NEW, fieldDesc[i].impl);
mv.visitInsn(DUP);
mv.visitLdcInsn(fieldDesc[i].dims[0]);
mv.visitLdcInsn(fieldDesc[i].dims[1]);
mv.visitMethodInsn(INVOKESPECIAL, fieldDesc[i].impl, "<init>", "(JJ)V", itf);
mv.visitVarInsn(ASTORE, 1);
mv.visitTypeInsn(NEW, "com/ibm/layout/Location");
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(
GETFIELD, this.implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitLdcInsn(fieldDesc[i].offset);
if (wayPointCounter > 0) {
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL, implClassName, "waypoint" + (wayPointCounter - 1), "()J", false);
mv.visitInsn(LADD);
}
mv.visitMethodInsn(
INVOKESPECIAL,
"com/ibm/layout/Location",
"<init>",
"(Lcom/ibm/layout/Location;J)V",
itf);
mv.visitVarInsn(ASTORE, 2);
mv.visitVarInsn(ALOAD, 1);
mv.visitVarInsn(ALOAD, 2);
mv.visitMethodInsn(
INVOKEVIRTUAL,
fieldDesc[i].impl,
"bindLocation",
"(Lcom/ibm/layout/Location;)V",
itf);
mv.visitVarInsn(ALOAD, 1);
mv.visitInsn(ARETURN);
mv.visitMaxs(6, 3);
mv.visitEnd();
}
}
}
{
boolean primitivePointer = ImplHelper.isTypePrimitive(fieldDesc[i].sig);
eaMV =
eaCW.visitMethod(
ACC_PUBLIC,
fieldDesc[i].name,
primitivePointer
? "()L" + fieldDesc[i].pointerSig + ";"
: "()Lcom/ibm/layout/Pointer;",
primitivePointer ? null : "()L" + fieldDesc[i].pointerSig + ";",
null);
eaMV.visitCode();
if (primitivePointer) {
eaMV.visitFieldInsn(
GETSTATIC,
"java/lang/" + ImplHelper.fieldSig2MethodTypeLongForm(fieldDesc[i].sig),
"TYPE",
"Ljava/lang/Class;");
eaMV.visitMethodInsn(
INVOKESTATIC,
"com/ibm/layout/LayoutType",
"getPrimPointer",
"(Ljava/lang/Class;)Lcom/ibm/layout/LayoutType;",
true);
eaMV.visitTypeInsn(CHECKCAST, fieldDesc[i].pointerSig);
} else {
if (null != fieldDesc[i].element) {
eaMV.visitLdcInsn(Type.getType("L" + fieldDesc[i].element.replace(".", "/") + ";"));
} else {
eaMV.visitLdcInsn(Type.getType(fieldDesc[i].sig));
}
eaMV.visitMethodInsn(
INVOKESTATIC,
"com/ibm/layout/LayoutType",
"getPointer",
"(Ljava/lang/Class;)Lcom/ibm/layout/Pointer;",
true);
}
eaMV.visitVarInsn(ASTORE, 1);
eaMV.visitVarInsn(ALOAD, 1);
eaMV.visitTypeInsn(NEW, "com/ibm/layout/Location");
eaMV.visitInsn(DUP);
eaMV.visitVarInsn(ALOAD, 0);
eaMV.visitFieldInsn(
GETFIELD, implClassName + "$EffectiveAddressImpl", "this$0", "L" + implClassName + ";");
eaMV.visitMethodInsn(
INVOKESTATIC,
implClassName,
"access$0",
"(L" + implClassName + ";)Lcom/ibm/layout/Location;",
false);
if (startWayPointCounter > 0) {
eaMV.visitVarInsn(ALOAD, 0);
eaMV.visitFieldInsn(
GETFIELD,
implClassName + "$EffectiveAddressImpl",
"this$0",
"L" + implClassName + ";");
eaMV.visitMethodInsn(
INVOKESTATIC,
implClassName,
"access$" + (startWayPointCounter),
"(L" + implClassName + ";)J",
false);
}
eaMV.visitLdcInsn(new Long(fieldDesc[i].offset));
if (startWayPointCounter > 0) {
eaMV.visitInsn(LADD);
}
eaMV.visitMethodInsn(
INVOKESPECIAL,
"com/ibm/layout/Location",
"<init>",
"(Lcom/ibm/layout/Location;J)V",
false);
if (primitivePointer) {
eaMV.visitMethodInsn(
INVOKEINTERFACE,
"com/ibm/layout/" + ImplHelper.fieldSig2MethodType(fieldDesc[i].sig) + "Pointer",
"bindLocation",
"(Lcom/ibm/layout/Location;)V",
true);
} else {
eaMV.visitMethodInsn(
INVOKEINTERFACE,
"com/ibm/layout/Pointer",
"bindLocation",
"(Lcom/ibm/layout/Location;)V",
true);
}
eaMV.visitVarInsn(ALOAD, 1);
eaMV.visitInsn(ARETURN);
if (startWayPointCounter > 0) {
eaMV.visitMaxs(8, 2);
} else {
eaMV.visitMaxs(6, 2);
}
eaMV.visitEnd();
}
}
{
mv = cw.visitMethod(ACC_PUBLIC, "copyFrom", "(L" + implClassName + ";)V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitVarInsn(ALOAD, 1);
mv.visitMethodInsn(
INVOKESPECIAL, implClassName, "copyFrom", "(Lcom/ibm/layout/Layout;)V", itf);
mv.visitInsn(RETURN);
mv.visitMaxs(2, 2);
mv.visitEnd();
}
{
mv = cw.visitMethod(ACC_PUBLIC, "toString", "()Ljava/lang/String;", null, null);
mv.visitCode();
mv.visitTypeInsn(NEW, "java/lang/StringBuilder");
mv.visitInsn(DUP);
mv.visitLdcInsn("(");
mv.visitMethodInsn(
INVOKESPECIAL, "java/lang/StringBuilder", "<init>", "(Ljava/lang/String;)V", false);
for (int i = 0; i < fieldDesc.length; i++) {
if (ImplHelper.isTypePrimitive(fieldDesc[i].sig)) {
mv.visitLdcInsn(fieldDesc[i].name + ": ");
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/lang/StringBuilder",
"append",
"(Ljava/lang/String;)Ljava/lang/StringBuilder;",
false);
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKEVIRTUAL, implClassName, fieldDesc[i].name, "()" + fieldDesc[i].sig, false);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/lang/StringBuilder",
"append",
"(" + ImplHelper.getByteCodeSig(fieldDesc[i].sig) + ")Ljava/lang/StringBuilder;",
false);
if (i < (fieldDesc.length - 1)) {
mv.visitLdcInsn(", ");
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/lang/StringBuilder",
"append",
"(Ljava/lang/String;)Ljava/lang/StringBuilder;",
false);
}
} else {
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKEVIRTUAL, implClassName, fieldDesc[i].name, "()" + fieldDesc[i].sig, false);
mv.visitMethodInsn(
INVOKEVIRTUAL, "java/lang/Object", "toString", "()Ljava/lang/String;", false);
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/lang/StringBuilder",
"append",
"(Ljava/lang/String;)Ljava/lang/StringBuilder;",
false);
}
}
mv.visitLdcInsn(")");
mv.visitMethodInsn(
INVOKEVIRTUAL,
"java/lang/StringBuilder",
"append",
"(Ljava/lang/String;)Ljava/lang/StringBuilder;",
false);
mv.visitMethodInsn(
INVOKEVIRTUAL, "java/lang/StringBuilder", "toString", "()Ljava/lang/String;", false);
mv.visitInsn(ARETURN);
mv.visitMaxs(3, 1);
mv.visitEnd();
}
if (isVariableLengthLayout > 0) {
mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL, implClassName, "waypoint" + (wayPointCounter - 1), "()J", false);
mv.visitLdcInsn(new Long(getClassSize(fieldDesc)));
mv.visitInsn(LADD);
mv.visitInsn(LRETURN);
mv.visitMaxs(4, 1);
mv.visitEnd();
} else {
mv = cw.visitMethod(ACC_PUBLIC, "sizeof", "()J", null, null);
mv.visitCode();
mv.visitLdcInsn(new Long(getClassSize(fieldDesc)));
mv.visitInsn(LRETURN);
mv.visitMaxs(2, 1);
mv.visitEnd();
}
{
mv =
cw.visitMethod(
ACC_PUBLIC, "EA", "()L" + interfaceClassName + "$EffectiveAddress;", null, null);
mv.visitCode();
mv.visitTypeInsn(NEW, implClassName + "$EffectiveAddressImpl");
mv.visitInsn(DUP);
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL,
implClassName + "$EffectiveAddressImpl",
"<init>",
"(L" + implClassName + ";)V",
false);
mv.visitInsn(ARETURN);
mv.visitMaxs(3, 1);
mv.visitEnd();
}
{
mv =
cw.visitMethod(
ACC_STATIC + ACC_SYNTHETIC,
"access$0",
"(L" + implClassName + ";)Lcom/ibm/layout/Location;",
null,
null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(
INVOKESPECIAL, implClassName, "getLocation", "()Lcom/ibm/layout/Location;", false);
mv.visitInsn(ARETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
{
mv =
cw.visitMethod(
ACC_PRIVATE + ACC_FINAL, "getLocation", "()Lcom/ibm/layout/Location;", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitFieldInsn(GETFIELD, implClassName, "location", "Lcom/ibm/layout/Location;");
mv.visitInsn(ARETURN);
mv.visitMaxs(1, 1);
mv.visitEnd();
}
if (isVariableLengthLayout == 1) {
if (fieldDesc[fieldDesc.length - 1].repeatCountMember == null) {
// not fixed header var tail
isVariableLengthLayout++;
}
}
ImplHelper.genLayoutTypeImpl(cw, mv, fv, implClassName, isVariableLengthLayout, false);
ImplHelper.getLayoutImpl(cw, mv, implClassName);
cw.visitEnd();
return cw.toByteArray();
}
public static byte[] createPojo(
String className, ASMProperty[] properties, Class parent, Class[] interfaces, String srcName)
throws PageException {
className = className.replace('.', '/');
className = className.replace('\\', '/');
className = ListUtil.trim(className, "/");
String[] inter = null;
if (interfaces != null) {
inter = new String[interfaces.length];
for (int i = 0; i < inter.length; i++) {
inter[i] = interfaces[i].getName().replace('.', '/');
}
}
// CREATE CLASS
ClassWriter cw = ASMUtil.getClassWriter();
cw.visit(
Opcodes.V1_6,
Opcodes.ACC_PUBLIC,
className,
null,
parent.getName().replace('.', '/'),
inter);
String md5;
try {
md5 = createMD5(properties);
} catch (Throwable t) {
md5 = "";
t.printStackTrace();
}
FieldVisitor fv =
cw.visitField(
Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL + Opcodes.ACC_STATIC,
"_md5_",
"Ljava/lang/String;",
null,
md5);
fv.visitEnd();
// Constructor
GeneratorAdapter adapter =
new GeneratorAdapter(Opcodes.ACC_PUBLIC, CONSTRUCTOR_OBJECT, null, null, cw);
adapter.loadThis();
adapter.invokeConstructor(toType(parent, true), CONSTRUCTOR_OBJECT);
adapter.returnValue();
adapter.endMethod();
// properties
for (int i = 0; i < properties.length; i++) {
createProperty(cw, className, properties[i]);
}
// complexType src
if (!StringUtil.isEmpty(srcName)) {
GeneratorAdapter _adapter =
new GeneratorAdapter(
Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL + Opcodes.ACC_STATIC,
_SRC_NAME,
null,
null,
cw);
_adapter.push(srcName);
_adapter.returnValue();
_adapter.endMethod();
}
cw.visitEnd();
return cw.toByteArray();
}
@Override
public void visitEnd() {
checkEnd();
end = true;
super.visitEnd();
}
public static byte[] generate(EventClassModel model) {
ClassWriter cwriter = new ClassWriter(ClassWriter.COMPUTE_MAXS);
ClassVisitor cw;
if (TRACE) {
cw = new TraceClassVisitor(cwriter, new ASMifier(), new PrintWriter(System.out));
cw = new CheckClassAdapter(cw);
} else {
cw = cwriter;
}
FieldVisitor fv;
MethodVisitor mv;
String concreteClassName =
model.getRootPackageInternalPrefix() + "event/" + model.technicalNameCapitalized + "Event";
String className =
model.isCustomized
? model.getRootPackageInternalPrefix()
+ "event/Abstract"
+ model.technicalNameCapitalized
+ "Event"
: concreteClassName;
cw.visit(
V1_7,
ACC_PUBLIC + ACC_SUPER + (model.isCustomized ? ACC_ABSTRACT : 0),
className,
null,
"org/instantlogic/interaction/flow/impl/SimpleFlowEvent",
null);
// public static final HomeEvent
{
fv =
cw.visitField(
ACC_PUBLIC + ACC_FINAL + ACC_STATIC,
"INSTANCE",
"L" + concreteClassName + ";",
null,
null);
fv.visitEnd();
}
{
mv = cw.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null);
mv.visitCode();
// INSTANCE = new HomeEvent();
mv.visitTypeInsn(NEW, concreteClassName);
mv.visitInsn(DUP);
mv.visitMethodInsn(INVOKESPECIAL, concreteClassName, "<init>", "()V");
mv.visitFieldInsn(PUTSTATIC, className, "INSTANCE", "L" + concreteClassName + ";");
mv.visitInsn(RETURN);
mv.visitMaxs(9, 99);
mv.visitEnd();
}
// Default synthetic constructor
{
mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitLdcInsn(model.name);
mv.visitIntInsn(BIPUSH, model.parameters.size());
mv.visitTypeInsn(ANEWARRAY, "org/instantlogic/fabric/model/Entity");
int i = 0;
for (String parameter : model.parameters) {
mv.visitInsn(DUP);
mv.visitIntInsn(BIPUSH, i);
mv.visitFieldInsn(
GETSTATIC,
model.getRootPackageInternalPrefix() + "entity/" + parameter + "Entity",
"INSTANCE",
"L" + model.getRootPackageInternalPrefix() + "entity/" + parameter + "Entity;");
mv.visitInsn(AASTORE);
i++;
}
mv.visitMethodInsn(
INVOKESPECIAL,
"org/instantlogic/interaction/flow/impl/SimpleFlowEvent",
"<init>",
"(Ljava/lang/String;[Lorg/instantlogic/fabric/model/Entity;)V");
mv.visitInsn(RETURN);
mv.visitMaxs(9, 99);
mv.visitEnd();
}
cw.visitEnd();
return cwriter.toByteArray();
}
public static <T> byte[] createTargetSetterClass(
String className,
DelayedCellSetterFactory<T, ?>[] delayedCellSetters,
CellSetter<T>[] setters,
Type type,
boolean ignoreException,
int maxMethodSize)
throws Exception {
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
FieldVisitor fv;
MethodVisitor mv;
final String targetType = AsmUtils.toType(type);
final String classType = AsmUtils.toType(className);
cw.visit(
V1_6,
ACC_FINAL + ACC_PUBLIC + ACC_SUPER,
classType,
"L" + CSV_CELL_MAPPER_TYPE + "<L" + targetType + ";>;",
CSV_CELL_MAPPER_TYPE,
null);
// declare fields
for (int i = 0; i < delayedCellSetters.length; i++) {
if (delayedCellSetters[i] != null) {
fv =
cw.visitField(
ACC_PROTECTED + ACC_FINAL,
"delayedCellSetter" + i,
AsmUtils.toDeclaredLType(DELAYED_CELL_SETTER_TYPE),
"L" + DELAYED_CELL_SETTER_TYPE + "<L" + targetType + ";*>;",
null);
fv.visitEnd();
}
}
for (int i = 0; i < setters.length; i++) {
if (setters[i] != null) {
fv =
cw.visitField(
ACC_PROTECTED + ACC_FINAL,
"setter" + i,
AsmUtils.toDeclaredLType(CELL_SETTER_TYPE),
"L" + CELL_SETTER_TYPE + "<L" + targetType + ";>;",
null);
fv.visitEnd();
}
}
appendInit(delayedCellSetters, setters, cw, targetType, classType, maxMethodSize);
appendDelayedCellValue(delayedCellSetters, ignoreException, cw, classType);
append_delayedCellValue(delayedCellSetters, cw, classType, maxMethodSize);
appendCellValue(setters, ignoreException, cw, classType);
append_cellValue(delayedCellSetters, setters, cw, classType, maxMethodSize);
appendApplyDelayedSetter(delayedCellSetters, ignoreException, cw, classType, maxMethodSize);
appendApplyDelayedCellSetterN(delayedCellSetters, cw, classType);
appendGetDelayedCellSetter(delayedCellSetters, cw, targetType, classType, maxMethodSize);
appendPeekDelayedCellSetterValue(delayedCellSetters, cw, classType, maxMethodSize);
cw.visitEnd();
return AsmUtils.writeClassToFile(className, cw.toByteArray());
}
protected void injectFieldTable(ClassWriter classWriter) {
FieldVisitor fieldVisitor =
classWriter.visitField(
ACC_PRIVATE + ACC_FINAL, "fieldTable", "[Ljava/lang/reflect/Field;", null, null);
fieldVisitor.visitEnd();
}
@Override
public AnnotationVisitor visit(String annotationTypeDescriptor, boolean visible) {
return fieldVisitor.visitAnnotation(annotationTypeDescriptor, visible);
}
@Override
public AnnotationVisitor visit(
String annotationTypeDescriptor, boolean visible, int typeReference, String typePath) {
return fieldVisitor.visitTypeAnnotation(
typeReference, TypePath.fromString(typePath), annotationTypeDescriptor, visible);
}
public AnnotationVisitor visitAnnotation(String desc, boolean visible) {
return AnnotationVisitorTee.getInstance(
fv1.visitAnnotation(desc, visible), fv2.visitAnnotation(desc, visible));
}
@Override
public boolean equals(Object other) {
return this == other
|| !(other == null || getClass() != other.getClass())
&& fieldVisitor.equals(((OnField) other).fieldVisitor);
}
public void visitEnd() {
fv1.visitEnd();
fv2.visitEnd();
}
public void accept(FieldVisitor fv) {
AnnotationVisitor av = fv.visitAnnotation(type, visible);
accept(items, av);
av.visitEnd();
}
