Java Code Examples for org.objectweb.asm.MethodVisitor#visitTableSwitchInsn()

The following examples show how to use org.objectweb.asm.MethodVisitor#visitTableSwitchInsn() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: SwitchStmt.java    From maple-ir with GNU General Public License v3.0 6 votes vote down vote up
@Override
public void toCode(MethodVisitor visitor, BytecodeFrontend assembler) {
	if (needsSort()) {
		sort();
	}

	int[] cases = new int[targets.size()];
	Label[] labels = new Label[targets.size()];
	int j = 0;
	for (Entry<Integer, BasicBlock> e : targets.entrySet()) {
		cases[j] = e.getKey();
		labels[j++] = assembler.getLabel(e.getValue());
	}

	expression.toCode(visitor, assembler);
	int[] cast = TypeUtils.getPrimitiveCastOpcodes(expression.getType(), Type.INT_TYPE); // widen
	for (int i = 0; i < cast.length; i++) {
		visitor.visitInsn(cast[i]);
	}
	boolean fitsIntoTable = fitsIntoTableSwitch();
	if (fitsIntoTable) {
		visitor.visitTableSwitchInsn(cases[0], cases[cases.length - 1], assembler.getLabel(defaultTarget), labels);
	} else {
		visitor.visitLookupSwitchInsn(assembler.getLabel(defaultTarget), cases, labels);
	}
}
 
Example 2
Source File: TableSwitchInsnNode.java    From Concurnas with MIT License 5 votes vote down vote up
@Override
public void accept(final MethodVisitor methodVisitor) {
  Label[] labelsArray = new Label[this.labels.size()];
  for (int i = 0, n = labelsArray.length; i < n; ++i) {
    labelsArray[i] = this.labels.get(i).getLabel();
  }
  methodVisitor.visitTableSwitchInsn(min, max, dflt.getLabel(), labelsArray);
  acceptAnnotations(methodVisitor);
}
 
Example 3
Source File: TableSwitchInsnNode.java    From Cafebabe with GNU General Public License v3.0 5 votes vote down vote up
@Override
public void accept(final MethodVisitor methodVisitor) {
	Label[] labelsArray = new Label[this.labels.size()];
	for (int i = 0, n = labelsArray.length; i < n; ++i) {
		labelsArray[i] = this.labels.get(i).getLabel();
	}
	methodVisitor.visitTableSwitchInsn(min, max, dflt.getLabel(), labelsArray);
	acceptAnnotations(methodVisitor);
}
 
Example 4
Source File: TableSwitchInsnNode.java    From JByteMod-Beta with GNU General Public License v2.0 5 votes vote down vote up
@Override
public void accept(final MethodVisitor mv) {
  Label[] labels = new Label[this.labels.size()];
  for (int i = 0; i < labels.length; ++i) {
    labels[i] = this.labels.get(i).getLabel();
  }
  mv.visitTableSwitchInsn(min, max, dflt.getLabel(), labels);
  acceptAnnotations(mv);
}
 
Example 5
Source File: TableSwitchInsnNode.java    From JReFrameworker with MIT License 5 votes vote down vote up
@Override
public void accept(final MethodVisitor methodVisitor) {
  Label[] labelsArray = new Label[this.labels.size()];
  for (int i = 0, n = labelsArray.length; i < n; ++i) {
    labelsArray[i] = this.labels.get(i).getLabel();
  }
  methodVisitor.visitTableSwitchInsn(min, max, dflt.getLabel(), labelsArray);
  acceptAnnotations(methodVisitor);
}
 
Example 6
Source File: TableSwitchInsnNode.java    From JReFrameworker with MIT License 5 votes vote down vote up
@Override
public void accept(final MethodVisitor methodVisitor) {
  Label[] labelsArray = new Label[this.labels.size()];
  for (int i = 0, n = labelsArray.length; i < n; ++i) {
    labelsArray[i] = this.labels.get(i).getLabel();
  }
  methodVisitor.visitTableSwitchInsn(min, max, dflt.getLabel(), labelsArray);
  acceptAnnotations(methodVisitor);
}
 
Example 7
Source File: ASMGen.java    From beetl2.0 with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up
public static byte[] dump() throws Exception {

		ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
		FieldVisitor fv;
		MethodVisitor mv;
		AnnotationVisitor av0;

		cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER,
				"com/beetl/performance/lab/asm/UserAsmAccessor1", null,
				"java/lang/Object",
				new String[] { "com/beetl/performance/lab/asm/Access" });

		{
			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(1, 1);
			mv.visitEnd();
		}
		{
			mv = cw.visitMethod(
					ACC_PUBLIC,
					"get",
					"(Ljava/lang/Object;I)Ljava/lang/Object;",
					null,
					new String[] { "com/beetl/performance/lab/asm/ASMCastException" });
			mv.visitCode();
			Label l0 = new Label();
			Label l1 = new Label();
			Label l2 = new Label();
			mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Exception");
			mv.visitInsn(ACONST_NULL);
			mv.visitVarInsn(ASTORE, 3);
			mv.visitLabel(l0);
			mv.visitVarInsn(ALOAD, 1);
			mv.visitTypeInsn(CHECKCAST, "com/beetl/performance/lab/User");
			mv.visitVarInsn(ASTORE, 3);
			mv.visitLabel(l1);
			Label l3 = new Label();
			mv.visitJumpInsn(GOTO, l3);
			mv.visitLabel(l2);
			mv.visitFrame(Opcodes.F_FULL, 4, new Object[] {
					"com/beetl/performance/lab/asm/UserAsmAccessor",
					"java/lang/Object", Opcodes.INTEGER,
					"com/beetl/performance/lab/User" }, 1,
					new Object[] { "java/lang/Exception" });
			mv.visitVarInsn(ASTORE, 4);
			mv.visitTypeInsn(NEW,
					"com/beetl/performance/lab/asm/ASMCastException");
			mv.visitInsn(DUP);
			mv.visitMethodInsn(INVOKESPECIAL,
					"com/beetl/performance/lab/asm/ASMCastException", "<init>",
					"()V");
			mv.visitInsn(ATHROW);
			mv.visitLabel(l3);
			mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
			mv.visitVarInsn(ILOAD, 2);
			Label l4 = new Label();
			Label l5 = new Label();
			Label l6 = new Label();
			mv.visitTableSwitchInsn(1, 2, l6, new Label[] { l4, l5 });
			mv.visitLabel(l4);
			mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
			mv.visitVarInsn(ALOAD, 3);
			mv.visitMethodInsn(INVOKEVIRTUAL, "com/beetl/performance/lab/User",
					"getName", "()Ljava/lang/String;");
			mv.visitInsn(ARETURN);
			mv.visitLabel(l5);
			mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
			mv.visitVarInsn(ALOAD, 3);
			mv.visitMethodInsn(INVOKEVIRTUAL, "com/beetl/performance/lab/User",
					"getId", "()I");
			mv.visitMethodInsn(INVOKESTATIC, "java/lang/Integer", "valueOf",
					"(I)Ljava/lang/Integer;");
			mv.visitInsn(ARETURN);
			mv.visitLabel(l6);
			mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
			mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
			mv.visitInsn(DUP);
			mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException",
					"<init>", "()V");
			mv.visitInsn(ATHROW);
			mv.visitMaxs(2, 5);
			mv.visitEnd();
		}
		cw.visitEnd();

		return cw.toByteArray();
	}
 
Example 8
Source File: ASMGen.java    From beetl2.0 with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up
public static byte[] dump() throws Exception {

		ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
		FieldVisitor fv;
		MethodVisitor mv;
		AnnotationVisitor av0;

		cw.visit(V1_6, ACC_PUBLIC + ACC_SUPER,
				"com/beetl/performance/lab/asm/UserAsmAccessor1", null,
				"java/lang/Object",
				new String[] { "com/beetl/performance/lab/asm/Access" });

		{
			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(1, 1);
			mv.visitEnd();
		}
		{
			mv = cw.visitMethod(
					ACC_PUBLIC,
					"get",
					"(Ljava/lang/Object;I)Ljava/lang/Object;",
					null,
					new String[] { "com/beetl/performance/lab/asm/ASMCastException" });
			mv.visitCode();
			Label l0 = new Label();
			Label l1 = new Label();
			Label l2 = new Label();
			mv.visitTryCatchBlock(l0, l1, l2, "java/lang/Exception");
			mv.visitInsn(ACONST_NULL);
			mv.visitVarInsn(ASTORE, 3);
			mv.visitLabel(l0);
			mv.visitVarInsn(ALOAD, 1);
			mv.visitTypeInsn(CHECKCAST, "com/beetl/performance/lab/User");
			mv.visitVarInsn(ASTORE, 3);
			mv.visitLabel(l1);
			Label l3 = new Label();
			mv.visitJumpInsn(GOTO, l3);
			mv.visitLabel(l2);
			mv.visitFrame(Opcodes.F_FULL, 4, new Object[] {
					"com/beetl/performance/lab/asm/UserAsmAccessor",
					"java/lang/Object", Opcodes.INTEGER,
					"com/beetl/performance/lab/User" }, 1,
					new Object[] { "java/lang/Exception" });
			mv.visitVarInsn(ASTORE, 4);
			mv.visitTypeInsn(NEW,
					"com/beetl/performance/lab/asm/ASMCastException");
			mv.visitInsn(DUP);
			mv.visitMethodInsn(INVOKESPECIAL,
					"com/beetl/performance/lab/asm/ASMCastException", "<init>",
					"()V");
			mv.visitInsn(ATHROW);
			mv.visitLabel(l3);
			mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
			mv.visitVarInsn(ILOAD, 2);
			Label l4 = new Label();
			Label l5 = new Label();
			Label l6 = new Label();
			mv.visitTableSwitchInsn(1, 2, l6, new Label[] { l4, l5 });
			mv.visitLabel(l4);
			mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
			mv.visitVarInsn(ALOAD, 3);
			mv.visitMethodInsn(INVOKEVIRTUAL, "com/beetl/performance/lab/User",
					"getName", "()Ljava/lang/String;");
			mv.visitInsn(ARETURN);
			mv.visitLabel(l5);
			mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
			mv.visitVarInsn(ALOAD, 3);
			mv.visitMethodInsn(INVOKEVIRTUAL, "com/beetl/performance/lab/User",
					"getId", "()I");
			mv.visitMethodInsn(INVOKESTATIC, "java/lang/Integer", "valueOf",
					"(I)Ljava/lang/Integer;");
			mv.visitInsn(ARETURN);
			mv.visitLabel(l6);
			mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
			mv.visitTypeInsn(NEW, "java/lang/RuntimeException");
			mv.visitInsn(DUP);
			mv.visitMethodInsn(INVOKESPECIAL, "java/lang/RuntimeException",
					"<init>", "()V");
			mv.visitInsn(ATHROW);
			mv.visitMaxs(2, 5);
			mv.visitEnd();
		}
		cw.visitEnd();

		return cw.toByteArray();
	}
 
Example 9
Source File: BlockSpaceTransform.java    From OpenModsLib with MIT License 4 votes vote down vote up
private static void createTransformMethod(MethodVisitor mv, boolean invert) {
	// 0 - this (unused)
	// 1 - orientation
	// 2,3 - x
	// 4,5 - y
	// 6,7 - z
	mv.visitCode();

	mv.visitVarInsn(Opcodes.ALOAD, 1);

	final String enumType = Type.getInternalName(Enum.class);
	mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, enumType, "ordinal", Type.getMethodDescriptor(Type.INT_TYPE), false);

	final Orientation[] orientations = Orientation.values();

	final Label defaultLabel = new Label();
	final Label[] targets = new Label[orientations.length];
	for (int i = 0; i < orientations.length; i++)
		targets[i] = new Label();

	mv.visitTableSwitchInsn(0, orientations.length - 1, defaultLabel, targets);

	{
		mv.visitLabel(defaultLabel);
		final String excType = Type.getInternalName(IllegalArgumentException.class);
		final Type stringType = Type.getType(String.class);

		mv.visitTypeInsn(Opcodes.NEW, excType);
		mv.visitInsn(Opcodes.DUP);
		mv.visitVarInsn(Opcodes.ALOAD, 1);
		mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, Type.getInternalName(Object.class), "toString", Type.getMethodDescriptor(stringType), false);
		mv.visitMethodInsn(Opcodes.INVOKESPECIAL, excType, "<init>", Type.getMethodDescriptor(Type.VOID_TYPE, stringType), false);
		mv.visitInsn(Opcodes.ATHROW);
	}

	{
		final String createVectorDesc = Type.getMethodDescriptor(Type.getType(Vec3d.class), Type.DOUBLE_TYPE, Type.DOUBLE_TYPE, Type.DOUBLE_TYPE);
		final String selfType = Type.getInternalName(BlockSpaceTransform.class);
		for (int i = 0; i < orientations.length; i++) {
			mv.visitLabel(targets[i]);
			final Orientation orientation = orientations[i];
			final Matrix3f mat = orientation.getLocalToWorldMatrix();
			if (invert) mat.invert();

			createRowVectorMultiplication(mv, mat.m00, mat.m01, mat.m02);
			createRowVectorMultiplication(mv, mat.m10, mat.m11, mat.m12);
			createRowVectorMultiplication(mv, mat.m20, mat.m21, mat.m22);

			mv.visitMethodInsn(Opcodes.INVOKESTATIC, selfType, "createVector", createVectorDesc, false);
			mv.visitInsn(Opcodes.ARETURN);
		}
	}

	mv.visitMaxs(0, 0);
	mv.visitEnd();
}
 
Example 10
Source File: FieldAccess.java    From reflectasm with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up
static private void insertGetPrimitive (ClassWriter cw, String classNameInternal, ArrayList<Field> fields,
	Type primitiveType) {
	int maxStack = 6;
	final String getterMethodName;
	final String typeNameInternal = primitiveType.getDescriptor();
	final int returnValueInstruction;
	switch (primitiveType.getSort()) {
	case Type.BOOLEAN:
		getterMethodName = "getBoolean";
		returnValueInstruction = IRETURN;
		break;
	case Type.BYTE:
		getterMethodName = "getByte";
		returnValueInstruction = IRETURN;
		break;
	case Type.CHAR:
		getterMethodName = "getChar";
		returnValueInstruction = IRETURN;
		break;
	case Type.SHORT:
		getterMethodName = "getShort";
		returnValueInstruction = IRETURN;
		break;
	case Type.INT:
		getterMethodName = "getInt";
		returnValueInstruction = IRETURN;
		break;
	case Type.FLOAT:
		getterMethodName = "getFloat";
		returnValueInstruction = FRETURN;
		break;
	case Type.LONG:
		getterMethodName = "getLong";
		returnValueInstruction = LRETURN;
		break;
	case Type.DOUBLE:
		getterMethodName = "getDouble";
		returnValueInstruction = DRETURN;
		break;
	default:
		getterMethodName = "get";
		returnValueInstruction = ARETURN;
		break;
	}
	MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, getterMethodName, "(Ljava/lang/Object;I)" + typeNameInternal, null, null);
	mv.visitCode();
	mv.visitVarInsn(ILOAD, 2);

	if (!fields.isEmpty()) {
		maxStack--;
		Label[] labels = new Label[fields.size()];
		Label labelForInvalidTypes = new Label();
		boolean hasAnyBadTypeLabel = false;
		for (int i = 0, n = labels.length; i < n; i++) {
			if (Type.getType(fields.get(i).getType()).equals(primitiveType))
				labels[i] = new Label();
			else {
				labels[i] = labelForInvalidTypes;
				hasAnyBadTypeLabel = true;
			}
		}
		Label defaultLabel = new Label();
		mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);

		for (int i = 0, n = labels.length; i < n; i++) {
			Field field = fields.get(i);
			if (!labels[i].equals(labelForInvalidTypes)) {
				mv.visitLabel(labels[i]);
				mv.visitFrame(F_SAME, 0, null, 0, null);
				mv.visitVarInsn(ALOAD, 1);
				mv.visitTypeInsn(CHECKCAST, classNameInternal);
				mv.visitFieldInsn(GETFIELD, field.getDeclaringClass().getName().replace('.', '/'), field.getName(),
					typeNameInternal);
				mv.visitInsn(returnValueInstruction);
			}
		}
		// Rest of fields: different type
		if (hasAnyBadTypeLabel) {
			mv.visitLabel(labelForInvalidTypes);
			mv.visitFrame(F_SAME, 0, null, 0, null);
			insertThrowExceptionForFieldType(mv, primitiveType.getClassName());
		}
		// Default: field not found
		mv.visitLabel(defaultLabel);
		mv.visitFrame(F_SAME, 0, null, 0, null);
	}
	mv = insertThrowExceptionForFieldNotFound(mv);
	mv.visitMaxs(maxStack, 3);
	mv.visitEnd();
}
 
Example 11
Source File: FieldAccess.java    From reflectasm with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up
static private void insertSetPrimitive (ClassWriter cw, String classNameInternal, ArrayList<Field> fields,
	Type primitiveType) {
	int maxStack = 6;
	int maxLocals = 4; // See correction below for LLOAD and DLOAD
	final String setterMethodName;
	final String typeNameInternal = primitiveType.getDescriptor();
	final int loadValueInstruction;
	switch (primitiveType.getSort()) {
	case Type.BOOLEAN:
		setterMethodName = "setBoolean";
		loadValueInstruction = ILOAD;
		break;
	case Type.BYTE:
		setterMethodName = "setByte";
		loadValueInstruction = ILOAD;
		break;
	case Type.CHAR:
		setterMethodName = "setChar";
		loadValueInstruction = ILOAD;
		break;
	case Type.SHORT:
		setterMethodName = "setShort";
		loadValueInstruction = ILOAD;
		break;
	case Type.INT:
		setterMethodName = "setInt";
		loadValueInstruction = ILOAD;
		break;
	case Type.FLOAT:
		setterMethodName = "setFloat";
		loadValueInstruction = FLOAD;
		break;
	case Type.LONG:
		setterMethodName = "setLong";
		loadValueInstruction = LLOAD;
		maxLocals++; // (LLOAD and DLOAD actually load two slots)
		break;
	case Type.DOUBLE:
		setterMethodName = "setDouble";
		loadValueInstruction = DLOAD;
		maxLocals++; // (LLOAD and DLOAD actually load two slots)
		break;
	default:
		setterMethodName = "set";
		loadValueInstruction = ALOAD;
		break;
	}
	MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, setterMethodName, "(Ljava/lang/Object;I" + typeNameInternal + ")V", null,
		null);
	mv.visitCode();
	mv.visitVarInsn(ILOAD, 2);

	if (!fields.isEmpty()) {
		maxStack--;
		Label[] labels = new Label[fields.size()];
		Label labelForInvalidTypes = new Label();
		boolean hasAnyBadTypeLabel = false;
		for (int i = 0, n = labels.length; i < n; i++) {
			if (Type.getType(fields.get(i).getType()).equals(primitiveType))
				labels[i] = new Label();
			else {
				labels[i] = labelForInvalidTypes;
				hasAnyBadTypeLabel = true;
			}
		}
		Label defaultLabel = new Label();
		mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);

		for (int i = 0, n = labels.length; i < n; i++) {
			if (!labels[i].equals(labelForInvalidTypes)) {
				Field field = fields.get(i);
				mv.visitLabel(labels[i]);
				mv.visitFrame(F_SAME, 0, null, 0, null);
				mv.visitVarInsn(ALOAD, 1);
				mv.visitTypeInsn(CHECKCAST, classNameInternal);
				mv.visitVarInsn(loadValueInstruction, 3);
				mv.visitFieldInsn(PUTFIELD, field.getDeclaringClass().getName().replace('.', '/'), field.getName(),
					typeNameInternal);
				mv.visitInsn(RETURN);
			}
		}
		// Rest of fields: different type
		if (hasAnyBadTypeLabel) {
			mv.visitLabel(labelForInvalidTypes);
			mv.visitFrame(F_SAME, 0, null, 0, null);
			insertThrowExceptionForFieldType(mv, primitiveType.getClassName());
		}
		// Default: field not found
		mv.visitLabel(defaultLabel);
		mv.visitFrame(F_SAME, 0, null, 0, null);
	}
	mv = insertThrowExceptionForFieldNotFound(mv);
	mv.visitMaxs(maxStack, maxLocals);
	mv.visitEnd();
}
 
Example 12
Source File: FieldAccess.java    From reflectasm with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up
static private void insertGetString (ClassWriter cw, String classNameInternal, ArrayList<Field> fields) {
	int maxStack = 6;
	MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "getString", "(Ljava/lang/Object;I)Ljava/lang/String;", null, null);
	mv.visitCode();
	mv.visitVarInsn(ILOAD, 2);

	if (!fields.isEmpty()) {
		maxStack--;
		Label[] labels = new Label[fields.size()];
		Label labelForInvalidTypes = new Label();
		boolean hasAnyBadTypeLabel = false;
		for (int i = 0, n = labels.length; i < n; i++) {
			if (fields.get(i).getType().equals(String.class))
				labels[i] = new Label();
			else {
				labels[i] = labelForInvalidTypes;
				hasAnyBadTypeLabel = true;
			}
		}
		Label defaultLabel = new Label();
		mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);

		for (int i = 0, n = labels.length; i < n; i++) {
			if (!labels[i].equals(labelForInvalidTypes)) {
				Field field = fields.get(i);
				mv.visitLabel(labels[i]);
				mv.visitFrame(F_SAME, 0, null, 0, null);
				mv.visitVarInsn(ALOAD, 1);
				mv.visitTypeInsn(CHECKCAST, classNameInternal);
				mv.visitFieldInsn(GETFIELD, field.getDeclaringClass().getName().replace('.', '/'), field.getName(),
					"Ljava/lang/String;");
				mv.visitInsn(ARETURN);
			}
		}
		// Rest of fields: different type
		if (hasAnyBadTypeLabel) {
			mv.visitLabel(labelForInvalidTypes);
			mv.visitFrame(F_SAME, 0, null, 0, null);
			insertThrowExceptionForFieldType(mv, "String");
		}
		// Default: field not found
		mv.visitLabel(defaultLabel);
		mv.visitFrame(F_SAME, 0, null, 0, null);
	}
	insertThrowExceptionForFieldNotFound(mv);
	mv.visitMaxs(maxStack, 3);
	mv.visitEnd();
}
 
Example 13
Source File: FieldAccess.java    From reflectasm with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up
static private void insertGetObject (ClassWriter cw, String classNameInternal, ArrayList<Field> fields) {
	int maxStack = 6;
	MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "get", "(Ljava/lang/Object;I)Ljava/lang/Object;", null, null);
	mv.visitCode();
	mv.visitVarInsn(ILOAD, 2);

	if (!fields.isEmpty()) {
		maxStack--;
		Label[] labels = new Label[fields.size()];
		for (int i = 0, n = labels.length; i < n; i++)
			labels[i] = new Label();
		Label defaultLabel = new Label();
		mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);

		for (int i = 0, n = labels.length; i < n; i++) {
			Field field = fields.get(i);

			mv.visitLabel(labels[i]);
			mv.visitFrame(F_SAME, 0, null, 0, null);
			mv.visitVarInsn(ALOAD, 1);
			mv.visitTypeInsn(CHECKCAST, classNameInternal);
			mv.visitFieldInsn(GETFIELD, field.getDeclaringClass().getName().replace('.', '/'), field.getName(),
				Type.getDescriptor(field.getType()));

			Type fieldType = Type.getType(field.getType());
			switch (fieldType.getSort()) {
			case Type.BOOLEAN:
				mv.visitMethodInsn(INVOKESTATIC, "java/lang/Boolean", "valueOf", "(Z)Ljava/lang/Boolean;");
				break;
			case Type.BYTE:
				mv.visitMethodInsn(INVOKESTATIC, "java/lang/Byte", "valueOf", "(B)Ljava/lang/Byte;");
				break;
			case Type.CHAR:
				mv.visitMethodInsn(INVOKESTATIC, "java/lang/Character", "valueOf", "(C)Ljava/lang/Character;");
				break;
			case Type.SHORT:
				mv.visitMethodInsn(INVOKESTATIC, "java/lang/Short", "valueOf", "(S)Ljava/lang/Short;");
				break;
			case Type.INT:
				mv.visitMethodInsn(INVOKESTATIC, "java/lang/Integer", "valueOf", "(I)Ljava/lang/Integer;");
				break;
			case Type.FLOAT:
				mv.visitMethodInsn(INVOKESTATIC, "java/lang/Float", "valueOf", "(F)Ljava/lang/Float;");
				break;
			case Type.LONG:
				mv.visitMethodInsn(INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;");
				break;
			case Type.DOUBLE:
				mv.visitMethodInsn(INVOKESTATIC, "java/lang/Double", "valueOf", "(D)Ljava/lang/Double;");
				break;
			}

			mv.visitInsn(ARETURN);
		}

		mv.visitLabel(defaultLabel);
		mv.visitFrame(F_SAME, 0, null, 0, null);
	}
	insertThrowExceptionForFieldNotFound(mv);
	mv.visitMaxs(maxStack, 3);
	mv.visitEnd();
}
 
Example 14
Source File: FieldAccess.java    From reflectasm with BSD 3-Clause "New" or "Revised" License 4 votes vote down vote up
static private void insertSetObject (ClassWriter cw, String classNameInternal, ArrayList<Field> fields) {
	int maxStack = 6;
	MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "set", "(Ljava/lang/Object;ILjava/lang/Object;)V", null, null);
	mv.visitCode();
	mv.visitVarInsn(ILOAD, 2);

	if (!fields.isEmpty()) {
		maxStack--;
		Label[] labels = new Label[fields.size()];
		for (int i = 0, n = labels.length; i < n; i++)
			labels[i] = new Label();
		Label defaultLabel = new Label();
		mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);

		for (int i = 0, n = labels.length; i < n; i++) {
			Field field = fields.get(i);
			Type fieldType = Type.getType(field.getType());

			mv.visitLabel(labels[i]);
			mv.visitFrame(F_SAME, 0, null, 0, null);
			mv.visitVarInsn(ALOAD, 1);
			mv.visitTypeInsn(CHECKCAST, classNameInternal);
			mv.visitVarInsn(ALOAD, 3);

			switch (fieldType.getSort()) {
			case Type.BOOLEAN:
				mv.visitTypeInsn(CHECKCAST, "java/lang/Boolean");
				mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Boolean", "booleanValue", "()Z");
				break;
			case Type.BYTE:
				mv.visitTypeInsn(CHECKCAST, "java/lang/Byte");
				mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Byte", "byteValue", "()B");
				break;
			case Type.CHAR:
				mv.visitTypeInsn(CHECKCAST, "java/lang/Character");
				mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Character", "charValue", "()C");
				break;
			case Type.SHORT:
				mv.visitTypeInsn(CHECKCAST, "java/lang/Short");
				mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Short", "shortValue", "()S");
				break;
			case Type.INT:
				mv.visitTypeInsn(CHECKCAST, "java/lang/Integer");
				mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Integer", "intValue", "()I");
				break;
			case Type.FLOAT:
				mv.visitTypeInsn(CHECKCAST, "java/lang/Float");
				mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Float", "floatValue", "()F");
				break;
			case Type.LONG:
				mv.visitTypeInsn(CHECKCAST, "java/lang/Long");
				mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Long", "longValue", "()J");
				break;
			case Type.DOUBLE:
				mv.visitTypeInsn(CHECKCAST, "java/lang/Double");
				mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Double", "doubleValue", "()D");
				break;
			case Type.ARRAY:
				mv.visitTypeInsn(CHECKCAST, fieldType.getDescriptor());
				break;
			case Type.OBJECT:
				mv.visitTypeInsn(CHECKCAST, fieldType.getInternalName());
				break;
			}

			mv.visitFieldInsn(PUTFIELD, field.getDeclaringClass().getName().replace('.', '/'), field.getName(),
				fieldType.getDescriptor());
			mv.visitInsn(RETURN);
		}

		mv.visitLabel(defaultLabel);
		mv.visitFrame(F_SAME, 0, null, 0, null);
	}
	mv = insertThrowExceptionForFieldNotFound(mv);
	mv.visitMaxs(maxStack, 4);
	mv.visitEnd();
}
 
Example 15
Source File: AsmClassAccess.java    From jadira with Apache License 2.0 4 votes vote down vote up
private static void enhanceForGetValuePrimitive(ClassVisitor cw, String accessClassNm, String clazzNm, Field[] fields, Type type) {

		String methodName;
		final String typeNm = type.getDescriptor();
		final int instruction;

		switch (type.getSort()) {
		case Type.BOOLEAN:
			methodName = "getBooleanValue";
			instruction = IRETURN;
			break;
		case Type.BYTE:
			methodName = "getByteValue";
			instruction = IRETURN;
			break;
		case Type.CHAR:
			methodName = "getCharValue";
			instruction = IRETURN;
			break;
		case Type.SHORT:
			methodName = "getShortValue";
			instruction = IRETURN;
			break;
		case Type.INT:
			methodName = "getIntValue";
			instruction = IRETURN;
			break;
		case Type.FLOAT:
			methodName = "getFloatValue";
			instruction = FRETURN;
			break;
		case Type.LONG:
			methodName = "getLongValue";
			instruction = LRETURN;
			break;
		case Type.DOUBLE:
			methodName = "getDoubleValue";
			instruction = DRETURN;
			break;
		default:
			methodName = "getValue";
			instruction = ARETURN;
			break;
		}

		MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, methodName, "(Ljava/lang/Object;Ljava/lang/String;)" + typeNm, null, null);

		mv.visitCode();
		mv.visitVarInsn(ALOAD, 0);
		mv.visitFieldInsn(GETFIELD, accessClassNm, "fieldNames", "[Ljava/lang/String;");
		mv.visitVarInsn(ALOAD, 2);
		mv.visitMethodInsn(INVOKESTATIC, "java/util/Arrays", "binarySearch", "([Ljava/lang/Object;Ljava/lang/Object;)I");
		mv.visitVarInsn(ISTORE, 3);
		mv.visitVarInsn(ILOAD, 3);

		final int maxStack;

		if (fields.length > 0) {
			maxStack = 5;
			Label[] labels = constructLabels(fields);

			Label defaultLabel = new Label();
			mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);

			for (int i = 0, n = labels.length; i < n; i++) {
				Field field = fields[i];
				mv.visitLabel(labels[i]);
				mv.visitFrame(F_SAME, 0, null, 0, null);
				mv.visitVarInsn(ALOAD, 1);
				mv.visitTypeInsn(CHECKCAST, clazzNm);
				mv.visitFieldInsn(GETFIELD, clazzNm, field.getName(), typeNm);
				mv.visitInsn(instruction);
			}

			mv.visitLabel(defaultLabel);
			mv.visitFrame(F_SAME, 0, null, 0, null);
		} else {
			maxStack = 6;
		}
		enhanceForThrowingException(mv, IllegalArgumentException.class, "Field was not found", "Ljava/lang/Object;", ALOAD, 2);
		mv.visitMaxs(maxStack, 4);
		mv.visitEnd();
	}
 
Example 16
Source File: AsmClassAccess.java    From jadira with Apache License 2.0 4 votes vote down vote up
private static void enhanceForPutValueObject(ClassVisitor cw, String accessClassNm, String clazzNm, Field[] fields) {

		int maxStack = 6;
		MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "putValue", "(Ljava/lang/Object;Ljava/lang/String;Ljava/lang/Object;)V", null, null);

		mv.visitCode();

		mv.visitVarInsn(ALOAD, 0);
		mv.visitFieldInsn(GETFIELD, accessClassNm, "fieldNames", "[Ljava/lang/String;");
		mv.visitVarInsn(ALOAD, 2);
		mv.visitMethodInsn(INVOKESTATIC, "java/util/Arrays", "binarySearch", "([Ljava/lang/Object;Ljava/lang/Object;)I");
		mv.visitVarInsn(ISTORE, 4);
		mv.visitVarInsn(ILOAD, 4);

		if (fields.length > 0) {
			maxStack = 5;
			Label[] labels = constructLabels(fields);

			Label defaultLabel = new Label();
			mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);

			for (int i = 0, n = labels.length; i < n; i++) {
				Field field = fields[i];

				mv.visitLabel(labels[i]);
				mv.visitFrame(F_SAME, 0, null, 0, null);
				mv.visitVarInsn(ALOAD, 1);
				mv.visitTypeInsn(CHECKCAST, clazzNm);

				mv.visitVarInsn(ALOAD, 3);

				Type fieldType = Type.getType(field.getType());
				switch (fieldType.getSort()) {
				case Type.BOOLEAN:
					mv.visitTypeInsn(CHECKCAST, "java/lang/Boolean");
					mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Boolean", "booleanValue", "()Z");
					break;
				case Type.BYTE:
					mv.visitTypeInsn(CHECKCAST, "java/lang/Byte");
					mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Byte", "byteValue", "()B");
					break;
				case Type.CHAR:
					mv.visitTypeInsn(CHECKCAST, "java/lang/Character");
					mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Character", "charValue", "()C");
					break;
				case Type.SHORT:
					mv.visitTypeInsn(CHECKCAST, "java/lang/Short");
					mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Short", "shortValue", "()S");
					break;
				case Type.INT:
					mv.visitTypeInsn(CHECKCAST, "java/lang/Integer");
					mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Integer", "intValue", "()I");
					break;
				case Type.FLOAT:
					mv.visitTypeInsn(CHECKCAST, "java/lang/Float");
					mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Float", "floatValue", "()F");
					break;
				case Type.LONG:
					mv.visitTypeInsn(CHECKCAST, "java/lang/Long");
					mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Long", "longValue", "()J");
					break;
				case Type.DOUBLE:
					mv.visitTypeInsn(CHECKCAST, "java/lang/Double");
					mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Double", "doubleValue", "()D");
					break;
				case Type.ARRAY:
					mv.visitTypeInsn(CHECKCAST, fieldType.getDescriptor());
					break;
				case Type.OBJECT:
					mv.visitTypeInsn(CHECKCAST, fieldType.getInternalName());
					break;
				}

				mv.visitFieldInsn(PUTFIELD, clazzNm, field.getName(), fieldType.getDescriptor());
				mv.visitInsn(RETURN);
			}

			mv.visitLabel(defaultLabel);
			mv.visitFrame(F_SAME, 0, null, 0, null);
		} else {
			maxStack = 6;
		}
		enhanceForThrowingException(mv, IllegalArgumentException.class, "Field was not found", "Ljava/lang/Object;", ALOAD, 2);
		mv.visitMaxs(maxStack, 5);
		mv.visitEnd();
	}
 
Example 17
Source File: AsmClassAccess.java    From jadira with Apache License 2.0 4 votes vote down vote up
private static void enhanceForGetValueObject(ClassVisitor cw, String accessClassNm, String clazzNm, Field[] fields) {

		MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "getValue", "(Ljava/lang/Object;Ljava/lang/String;)Ljava/lang/Object;", null, null);

		mv.visitCode();
		mv.visitVarInsn(ALOAD, 0);
		mv.visitFieldInsn(GETFIELD, accessClassNm, "fieldNames", "[Ljava/lang/String;");
		mv.visitVarInsn(ALOAD, 2);
		mv.visitMethodInsn(INVOKESTATIC, "java/util/Arrays", "binarySearch", "([Ljava/lang/Object;Ljava/lang/Object;)I");
		mv.visitVarInsn(ISTORE, 3);
		mv.visitVarInsn(ILOAD, 3);

		final int maxStack;

		if (fields.length > 0) {
			maxStack = 5;
			Label[] labels = constructLabels(fields);

			Label defaultLabel = new Label();
			mv.visitTableSwitchInsn(0, labels.length - 1, defaultLabel, labels);

			for (int i = 0, n = labels.length; i < n; i++) {
				Field field = fields[i];
				mv.visitLabel(labels[i]);
				mv.visitFrame(F_SAME, 0, null, 0, null);
				mv.visitVarInsn(ALOAD, 1);
				mv.visitTypeInsn(CHECKCAST, clazzNm);
				mv.visitFieldInsn(GETFIELD, clazzNm, field.getName(), Type.getDescriptor(field.getType()));

				Type fieldType = Type.getType(field.getType());
				switch (fieldType.getSort()) {
				case Type.BOOLEAN:
					mv.visitMethodInsn(INVOKESTATIC, "java/lang/Boolean", "valueOf", "(Z)Ljava/lang/Boolean;");
					break;
				case Type.BYTE:
					mv.visitMethodInsn(INVOKESTATIC, "java/lang/Byte", "valueOf", "(B)Ljava/lang/Byte;");
					break;
				case Type.CHAR:
					mv.visitMethodInsn(INVOKESTATIC, "java/lang/Character", "valueOf", "(C)Ljava/lang/Character;");
					break;
				case Type.SHORT:
					mv.visitMethodInsn(INVOKESTATIC, "java/lang/Short", "valueOf", "(S)Ljava/lang/Short;");
					break;
				case Type.INT:
					mv.visitMethodInsn(INVOKESTATIC, "java/lang/Integer", "valueOf", "(I)Ljava/lang/Integer;");
					break;
				case Type.FLOAT:
					mv.visitMethodInsn(INVOKESTATIC, "java/lang/Float", "valueOf", "(F)Ljava/lang/Float;");
					break;
				case Type.LONG:
					mv.visitMethodInsn(INVOKESTATIC, "java/lang/Long", "valueOf", "(J)Ljava/lang/Long;");
					break;
				case Type.DOUBLE:
					mv.visitMethodInsn(INVOKESTATIC, "java/lang/Double", "valueOf", "(D)Ljava/lang/Double;");
					break;
				}

				mv.visitInsn(ARETURN);
			}

			mv.visitLabel(defaultLabel);
			mv.visitFrame(F_SAME, 0, null, 0, null);
		} else {
			maxStack = 6;
		}
		enhanceForThrowingException(mv, IllegalArgumentException.class, "Field was not found", "Ljava/lang/Object;", ALOAD, 2);
		mv.visitMaxs(maxStack, 4);
		mv.visitEnd();
	}
 
Example 18
Source File: TableSwitch.java    From OSRS-Deobfuscator with BSD 2-Clause "Simplified" License 4 votes vote down vote up
@Override
public void accept(MethodVisitor visitor)
{
	visitor.visitTableSwitchInsn(low, high, defi.getLabel(),
		branchi.stream().map(l -> l.getLabel()).toArray(org.objectweb.asm.Label[]::new));
}