Examples with FieldInsnNode org.objectweb.asm.tree.FieldInsnNode used on opensource projects

Example 1 with FieldInsnNode

use of org.objectweb.asm.tree.FieldInsnNode in project enumerable by hraberg.

the class ExpressionInterpreter method newOperation.

public Value newOperation(final AbstractInsnNode insn) throws AnalyzerException {
    switch(insn.getOpcode()) {
        case ACONST_NULL:
            return new ExpressionValue(createClassOrInterfaceType(Object.class.getName()), new NullLiteralExpr());
        case ICONST_M1:
            return new ExpressionValue(PRIMITIVE_INT, new UnaryExpr(new IntegerLiteralExpr("1"), UnaryExpr.Operator.negative));
        case ICONST_0:
            return new ExpressionValue(PRIMITIVE_INT, new IntegerLiteralExpr("0"));
        case ICONST_1:
            return new ExpressionValue(PRIMITIVE_INT, new IntegerLiteralExpr("1"));
        case ICONST_2:
            return new ExpressionValue(PRIMITIVE_INT, new IntegerLiteralExpr("2"));
        case ICONST_3:
            return new ExpressionValue(PRIMITIVE_INT, new IntegerLiteralExpr("3"));
        case ICONST_4:
            return new ExpressionValue(PRIMITIVE_INT, new IntegerLiteralExpr("4"));
        case ICONST_5:
            return new ExpressionValue(PRIMITIVE_INT, new IntegerLiteralExpr("5"));
        case LCONST_0:
            return new ExpressionValue(PRIMITIVE_LONG, new LongLiteralExpr("0L"));
        case LCONST_1:
            return new ExpressionValue(PRIMITIVE_LONG, new LongLiteralExpr("1L"));
        case FCONST_0:
            return new ExpressionValue(PRIMITIVE_FLOAT, new DoubleLiteralExpr("0.0f"));
        case FCONST_1:
            return new ExpressionValue(PRIMITIVE_FLOAT, new DoubleLiteralExpr("1.0f"));
        case FCONST_2:
            return new ExpressionValue(PRIMITIVE_FLOAT, new DoubleLiteralExpr("2.0f"));
        case DCONST_0:
            return new ExpressionValue(PRIMITIVE_DOUBLE, new DoubleLiteralExpr("0.0"));
        case DCONST_1:
            return new ExpressionValue(PRIMITIVE_DOUBLE, new DoubleLiteralExpr("1.0"));
        case BIPUSH:
        case SIPUSH:
            int operand = ((IntInsnNode) insn).operand;
            if (operand < 0)
                return new ExpressionValue(PRIMITIVE_INT, new UnaryExpr(new IntegerLiteralExpr("" + Math.abs(operand)), UnaryExpr.Operator.negative));
            return new ExpressionValue(PRIMITIVE_INT, new IntegerLiteralExpr("" + operand));
        case LDC:
            Object cst = ((LdcInsnNode) insn).cst;
            if (cst instanceof Number) {
                ExpressionValue value = null;
                if (cst instanceof Integer) {
                    value = new ExpressionValue(PRIMITIVE_INT, new IntegerLiteralExpr(cst.toString()));
                } else if (cst instanceof Float) {
                    value = new ExpressionValue(PRIMITIVE_FLOAT, new DoubleLiteralExpr(cst.toString() + "f"));
                } else if (cst instanceof Long) {
                    value = new ExpressionValue(PRIMITIVE_LONG, new LongLiteralExpr(cst.toString() + "L"));
                } else if (cst instanceof Double) {
                    value = new ExpressionValue(PRIMITIVE_DOUBLE, new DoubleLiteralExpr(cst.toString()));
                }
                if (((Number) cst).intValue() < 0) {
                    StringLiteralExpr expr = (StringLiteralExpr) value.expression;
                    expr.setValue(expr.getValue().substring("-".length()));
                    value.expression = new UnaryExpr(expr, UnaryExpr.Operator.negative);
                }
                return value;
            } else if (cst instanceof Type) {
                ClassExpr classExpr = new ClassExpr(new ReferenceType(createClassOrInterfaceType(((Type) cst).getClassName())));
                return new ExpressionValue(createClassOrInterfaceType(Class.class.getName()), classExpr);
            } else {
                return new ExpressionValue(createClassOrInterfaceType(String.class.getName()), new StringLiteralExpr(cst.toString()));
            }
        case JSR:
            throw new UnsupportedOperationException(AbstractVisitor.OPCODES[insn.getOpcode()]);
        case GETSTATIC:
            FieldInsnNode fieldNode = (FieldInsnNode) insn;
            ExpressionValue getField = (ExpressionValue) newValue(getType(fieldNode.desc));
            getField.expression = new FieldAccessExpr(new NameExpr(removeJavaLang(getObjectType(fieldNode.owner).getClassName())), fieldNode.name);
            return getField;
        case NEW:
            return newValue(Type.getObjectType(((TypeInsnNode) insn).desc));
        default:
            throw new Error("Internal error.");
    }
}

Example 2 with FieldInsnNode

use of org.objectweb.asm.tree.FieldInsnNode in project MinecraftForge by MinecraftForge.

the class EventSubscriptionTransformer method buildEvents.

private boolean buildEvents(ClassNode classNode) throws Exception {
    // Yes, this recursively loads classes until we get this base class. THIS IS NOT A ISSUE. Coremods should handle re-entry just fine.
    // If they do not this a COREMOD issue NOT a Forge/LaunchWrapper issue.
    Class<?> parent = this.getClass().getClassLoader().loadClass(classNode.superName.replace('/', '.'));
    if (!Event.class.isAssignableFrom(parent)) {
        return false;
    }
    //Class<?> listenerListClazz = Class.forName("net.minecraftforge.fml.common.eventhandler.ListenerList", false, getClass().getClassLoader());
    Type tList = Type.getType("Lnet/minecraftforge/fml/common/eventhandler/ListenerList;");
    boolean edited = false;
    boolean hasSetup = false;
    boolean hasGetListenerList = false;
    boolean hasDefaultCtr = false;
    boolean hasCancelable = false;
    boolean hasResult = false;
    String voidDesc = Type.getMethodDescriptor(VOID_TYPE);
    String boolDesc = Type.getMethodDescriptor(BOOLEAN_TYPE);
    String listDesc = tList.getDescriptor();
    String listDescM = Type.getMethodDescriptor(tList);
    for (MethodNode method : classNode.methods) {
        if (method.name.equals("setup") && method.desc.equals(voidDesc) && (method.access & ACC_PROTECTED) == ACC_PROTECTED)
            hasSetup = true;
        if ((method.access & ACC_PUBLIC) == ACC_PUBLIC) {
            if (method.name.equals("getListenerList") && method.desc.equals(listDescM))
                hasGetListenerList = true;
            if (method.name.equals("isCancelable") && method.desc.equals(boolDesc))
                hasCancelable = true;
            if (method.name.equals("hasResult") && method.desc.equals(boolDesc))
                hasResult = true;
        }
        if (method.name.equals("<init>") && method.desc.equals(voidDesc))
            hasDefaultCtr = true;
    }
    if (classNode.visibleAnnotations != null) {
        for (AnnotationNode node : classNode.visibleAnnotations) {
            if (!hasResult && node.desc.equals("Lnet/minecraftforge/fml/common/eventhandler/Event$HasResult;")) {
                /* Add:
                     *      public boolean hasResult()
                     *      {
                     *            return true;
                     *      }
                     */
                MethodNode method = new MethodNode(ACC_PUBLIC, "hasResult", boolDesc, null, null);
                method.instructions.add(new InsnNode(ICONST_1));
                method.instructions.add(new InsnNode(IRETURN));
                classNode.methods.add(method);
                edited = true;
            } else if (!hasCancelable && node.desc.equals("Lnet/minecraftforge/fml/common/eventhandler/Cancelable;")) {
                /* Add:
                     *      public boolean isCancelable()
                     *      {
                     *            return true;
                     *      }
                     */
                MethodNode method = new MethodNode(ACC_PUBLIC, "isCancelable", boolDesc, null, null);
                method.instructions.add(new InsnNode(ICONST_1));
                method.instructions.add(new InsnNode(IRETURN));
                classNode.methods.add(method);
                edited = true;
            }
        }
    }
    if (hasSetup) {
        if (!hasGetListenerList)
            throw new RuntimeException("Event class defines setup() but does not define getListenerList! " + classNode.name);
        else
            return edited;
    }
    Type tSuper = Type.getType(classNode.superName);
    //Add private static ListenerList LISTENER_LIST
    classNode.fields.add(new FieldNode(ACC_PRIVATE | ACC_STATIC, "LISTENER_LIST", listDesc, null, null));
    /*Add:
         *      public <init>()
         *      {
         *              super();
         *      }
         */
    if (!hasDefaultCtr) {
        MethodNode method = new MethodNode(ACC_PUBLIC, "<init>", voidDesc, null, null);
        method.instructions.add(new VarInsnNode(ALOAD, 0));
        method.instructions.add(new MethodInsnNode(INVOKESPECIAL, tSuper.getInternalName(), "<init>", voidDesc, false));
        method.instructions.add(new InsnNode(RETURN));
        classNode.methods.add(method);
    }
    /*Add:
         *      protected void setup()
         *      {
         *              super.setup();
         *              if (LISTENER_LIST != NULL)
         *              {
         *                      return;
         *              }
         *              LISTENER_LIST = new ListenerList(super.getListenerList());
         *      }
         */
    MethodNode method = new MethodNode(ACC_PROTECTED, "setup", voidDesc, null, null);
    method.instructions.add(new VarInsnNode(ALOAD, 0));
    method.instructions.add(new MethodInsnNode(INVOKESPECIAL, tSuper.getInternalName(), "setup", voidDesc, false));
    method.instructions.add(new FieldInsnNode(GETSTATIC, classNode.name, "LISTENER_LIST", listDesc));
    LabelNode initListener = new LabelNode();
    method.instructions.add(new JumpInsnNode(IFNULL, initListener));
    method.instructions.add(new InsnNode(RETURN));
    method.instructions.add(initListener);
    method.instructions.add(new FrameNode(F_SAME, 0, null, 0, null));
    method.instructions.add(new TypeInsnNode(NEW, tList.getInternalName()));
    method.instructions.add(new InsnNode(DUP));
    method.instructions.add(new VarInsnNode(ALOAD, 0));
    method.instructions.add(new MethodInsnNode(INVOKESPECIAL, tSuper.getInternalName(), "getListenerList", listDescM, false));
    method.instructions.add(new MethodInsnNode(INVOKESPECIAL, tList.getInternalName(), "<init>", getMethodDescriptor(VOID_TYPE, tList), false));
    method.instructions.add(new FieldInsnNode(PUTSTATIC, classNode.name, "LISTENER_LIST", listDesc));
    method.instructions.add(new InsnNode(RETURN));
    classNode.methods.add(method);
    /*Add:
         *      public ListenerList getListenerList()
         *      {
         *              return this.LISTENER_LIST;
         *      }
         */
    method = new MethodNode(ACC_PUBLIC, "getListenerList", listDescM, null, null);
    method.instructions.add(new FieldInsnNode(GETSTATIC, classNode.name, "LISTENER_LIST", listDesc));
    method.instructions.add(new InsnNode(ARETURN));
    classNode.methods.add(method);
    return true;
}

Example 3 with FieldInsnNode

use of org.objectweb.asm.tree.FieldInsnNode in project flink by apache.

the class NestedMethodAnalyzer method binaryOperation.

@Override
public BasicValue binaryOperation(AbstractInsnNode insn, BasicValue value1, BasicValue value2) throws AnalyzerException {
    switch(insn.getOpcode()) {
        case // put value2 into value1
        PUTFIELD:
            // skip untagged values
            if (!isTagged(value1)) {
                return null;
            }
            final TaggedValue taggedValue = (TaggedValue) value1;
            final FieldInsnNode field = (FieldInsnNode) insn;
            final boolean value2HasInputDependency = hasImportantDependencies(value2);
            // PUTFIELD on inputs is not allowed
            if (!taggedValue.isInput() && value2HasInputDependency) {
                if (!taggedValue.canContainFields()) {
                    taggedValue.setTag(Tag.CONTAINER);
                }
                taggedValue.addContainerMapping(field.name, tagged(value2), currentFrame);
            } else // PUTFIELD on inputs is not allowed
            if (!taggedValue.isInput() && !value2HasInputDependency) {
                if (!taggedValue.canContainFields()) {
                    taggedValue.setTag(Tag.CONTAINER);
                }
                taggedValue.addContainerMapping(field.name, null, currentFrame);
            } else // make input regular
            if (taggedValue.isInput()) {
                taggedValue.makeRegular();
            }
            return null;
        default:
            return super.binaryOperation(insn, value1, value2);
    }
}

Example 4 with FieldInsnNode

use of org.objectweb.asm.tree.FieldInsnNode in project bytecode-viewer by Konloch.

the class MemberQuery method matches.

@Override
public boolean matches(AbstractInsnNode ain) {
    if (!(ain instanceof FieldInsnNode) && !(ain instanceof MethodInsnNode))
        return false;
    int opcode = ain.opcode();
    String owner, name, desc;
    if (ain instanceof FieldInsnNode) {
        FieldInsnNode fin = (FieldInsnNode) ain;
        owner = fin.owner;
        name = fin.name;
        desc = fin.desc;
    } else {
        MethodInsnNode min = (MethodInsnNode) ain;
        owner = min.owner;
        name = min.name;
        desc = min.desc;
    }
    if (this.opcode == -1 || this.opcode == opcode) {
        if (this.owner == null || this.owner.equals(owner)) {
            if (this.name == null || this.name.equals(name)) {
                if (this.desc == null || this.desc.equals(desc) || desc.matches(this.desc)) {
                    return true;
                }
            }
        }
    }
    return false;
}

Example 5 with FieldInsnNode

use of org.objectweb.asm.tree.FieldInsnNode in project bytecode-viewer by Konloch.

the class BasicVerifier method binaryOperation.

@Override
public BasicValue binaryOperation(final AbstractInsnNode insn, final BasicValue value1, final BasicValue value2) throws AnalyzerException {
    BasicValue expected1;
    BasicValue expected2;
    switch(insn.opcode()) {
        case IALOAD:
            expected1 = newValue(Type.getType("[I"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case BALOAD:
            if (isSubTypeOf(value1, newValue(Type.getType("[Z")))) {
                expected1 = newValue(Type.getType("[Z"));
            } else {
                expected1 = newValue(Type.getType("[B"));
            }
            expected2 = BasicValue.INT_VALUE;
            break;
        case CALOAD:
            expected1 = newValue(Type.getType("[C"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case SALOAD:
            expected1 = newValue(Type.getType("[S"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case LALOAD:
            expected1 = newValue(Type.getType("[J"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case FALOAD:
            expected1 = newValue(Type.getType("[F"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case DALOAD:
            expected1 = newValue(Type.getType("[D"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case AALOAD:
            expected1 = newValue(Type.getType("[Ljava/lang/Object;"));
            expected2 = BasicValue.INT_VALUE;
            break;
        case IADD:
        case ISUB:
        case IMUL:
        case IDIV:
        case IREM:
        case ISHL:
        case ISHR:
        case IUSHR:
        case IAND:
        case IOR:
        case IXOR:
        case IF_ICMPEQ:
        case IF_ICMPNE:
        case IF_ICMPLT:
        case IF_ICMPGE:
        case IF_ICMPGT:
        case IF_ICMPLE:
            expected1 = BasicValue.INT_VALUE;
            expected2 = BasicValue.INT_VALUE;
            break;
        case FADD:
        case FSUB:
        case FMUL:
        case FDIV:
        case FREM:
        case FCMPL:
        case FCMPG:
            expected1 = BasicValue.FLOAT_VALUE;
            expected2 = BasicValue.FLOAT_VALUE;
            break;
        case LADD:
        case LSUB:
        case LMUL:
        case LDIV:
        case LREM:
        case LAND:
        case LOR:
        case LXOR:
        case LCMP:
            expected1 = BasicValue.LONG_VALUE;
            expected2 = BasicValue.LONG_VALUE;
            break;
        case LSHL:
        case LSHR:
        case LUSHR:
            expected1 = BasicValue.LONG_VALUE;
            expected2 = BasicValue.INT_VALUE;
            break;
        case DADD:
        case DSUB:
        case DMUL:
        case DDIV:
        case DREM:
        case DCMPL:
        case DCMPG:
            expected1 = BasicValue.DOUBLE_VALUE;
            expected2 = BasicValue.DOUBLE_VALUE;
            break;
        case IF_ACMPEQ:
        case IF_ACMPNE:
            expected1 = BasicValue.REFERENCE_VALUE;
            expected2 = BasicValue.REFERENCE_VALUE;
            break;
        case PUTFIELD:
            FieldInsnNode fin = (FieldInsnNode) insn;
            expected1 = newValue(Type.getObjectType(fin.owner));
            expected2 = newValue(Type.getType(fin.desc));
            break;
        default:
            throw new Error("Internal error.");
    }
    if (!isSubTypeOf(value1, expected1)) {
        throw new AnalyzerException(insn, "First argument", expected1, value1);
    } else if (!isSubTypeOf(value2, expected2)) {
        throw new AnalyzerException(insn, "Second argument", expected2, value2);
    }
    if (insn.opcode() == AALOAD) {
        return getElementValue(value1);
    } else {
        return super.binaryOperation(insn, value1, value2);
    }
}