/**
* 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();
}
/**
* Instantiate GenLayout
*
* @param elementInterfaceClass, element type for Array
*/
public GenLayout(Class<? extends Layout> clazz) {
this.clazz = clazz;
this.interfaceClassName = ImplHelper.getInterfaceClassName(clazz);
this.implClassName = ImplHelper.getImplClassName(clazz);
}
