Example usage for org.objectweb.asm Opcodes DUP

List of usage examples for org.objectweb.asm Opcodes DUP

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Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes DUP.

Prototype

int DUP

To view the source code for org.objectweb.asm Opcodes DUP.

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Usage

From source file:com.github.malamut2.low.AllocationMethodAdapter.java

License:Apache License

void calculateArrayLengthAndDispatch(String typeName, int dimCount) {
    // Since the dimensions of the array are not known at instrumentation
    // time, we take the created multi-dimensional array and peel off nesting
    // levels from the left.  For each nesting layer we probe the array length
    // and accumulate a partial product which we can then feed the recording
    // function.//from  w ww . j a  v a 2 s . c om

    // below we note the partial product of dimensions 1 to X-1 as productToX
    // (so productTo1 == 1 == no dimensions yet).  We denote by aref0 the
    // array reference at the current nesting level (the containing aref's [0]
    // element).  If we hit a level whose arraylength is 0 there's no point
    // continuing so we shortcut out.
    Label zeroDimension = new Label();
    super.visitInsn(Opcodes.DUP); // -> stack: ... origaref aref0
    super.visitLdcInsn(1); // -> stack: ... origaref aref0 productTo1
    for (int i = 0; i < dimCount; ++i) {
        // pre: stack: ... origaref aref0 productToI
        super.visitInsn(Opcodes.SWAP); // -> stack: ... origaref productToI aref
        super.visitInsn(Opcodes.DUP_X1);
        // -> stack: ... origaref aref0 productToI aref
        super.visitInsn(Opcodes.ARRAYLENGTH);
        // -> stack: ... origaref aref0 productToI dimI

        Label nonZeroDimension = new Label();
        super.visitInsn(Opcodes.DUP);
        // -> stack: ... origaref aref0 productToI dimI dimI
        super.visitJumpInsn(Opcodes.IFNE, nonZeroDimension);
        // -> stack: ... origaref aref0 productToI dimI
        super.visitInsn(Opcodes.POP);
        // -> stack: ... origaref aref0 productToI
        super.visitJumpInsn(Opcodes.GOTO, zeroDimension);
        super.visitLabel(nonZeroDimension);
        // -> stack: ... origaref aref0 productToI max(dimI,1)

        super.visitInsn(Opcodes.IMUL);
        // -> stack: ... origaref aref0 productTo{I+1}
        if (i < dimCount - 1) {
            super.visitInsn(Opcodes.SWAP);
            // -> stack: ... origaref productTo{I+1} aref0
            super.visitInsn(Opcodes.ICONST_0);
            // -> stack: ... origaref productTo{I+1} aref0 0
            super.visitInsn(Opcodes.AALOAD);
            // -> stack: ... origaref productTo{I+1} aref0'
            super.visitInsn(Opcodes.SWAP);
        }
        // post: stack: ... origaref aref0 productTo{I+1}
    }
    super.visitLabel(zeroDimension);

    super.visitInsn(Opcodes.SWAP); // -> stack: ... origaref product aref0
    super.visitInsn(Opcodes.POP); // -> stack: ... origaref product
    super.visitInsn(Opcodes.SWAP); // -> stack: ... product origaref
    invokeRecordAllocation(typeName);
}

From source file:com.github.wreulicke.bean.validation.ASMMethodParameterValidationInjector.java

License:Open Source License

private void inject(MethodNode node, ClassNode clazzNode) {
    if (Modifier.isStatic(node.access) || Modifier.isAbstract(node.access) || Modifier.isAbstract(node.access)
            || "<init>".equals(node.name) || "<clinit>".equals(node.name)) {
        return;//from w  w  w. ja v  a  2 s.  co  m
    }

    InsnList list = new InsnList();
    int index = node.localVariables.size();
    list.add(new MethodInsnNode(INVOKESTATIC, "javax/validation/Validation", "buildDefaultValidatorFactory",
            "()Ljavax/validation/ValidatorFactory;", false));
    list.add(new MethodInsnNode(INVOKEINTERFACE, "javax/validation/ValidatorFactory", "getValidator",
            "()Ljavax/validation/Validator;", true));
    list.add(new MethodInsnNode(INVOKEINTERFACE, "javax/validation/Validator", "forExecutables",
            "()Ljavax/validation/executable/ExecutableValidator;", true));

    list.add(new VarInsnNode(Opcodes.ASTORE, index));
    list.add(new VarInsnNode(Opcodes.ALOAD, index));
    list.add(new VarInsnNode(Opcodes.ALOAD, 0));

    list.add(new LdcInsnNode(Type.getType("L" + clazzNode.name + ";")));
    list.add(new LdcInsnNode(node.name));

    @SuppressWarnings("unchecked")
    List<LocalVariableNode> variables = node.localVariables;
    Type[] args = Type.getArgumentTypes(node.desc);

    list.add(new LdcInsnNode(args.length));
    list.add(new TypeInsnNode(Opcodes.ANEWARRAY, "java/lang/Class"));

    for (int i = 0; i < args.length; i++) {
        int paramIndex = 1 + i;
        list.add(new InsnNode(Opcodes.DUP));
        list.add(new LdcInsnNode(i));
        list.add(new LdcInsnNode(Type.getType(variables.get(paramIndex).desc)));
        list.add(new InsnNode(Opcodes.AASTORE));
    }

    list.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL, "java/lang/Class", "getMethod",
            "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;", false));

    list.add(new LdcInsnNode(args.length));
    list.add(new TypeInsnNode(Opcodes.ANEWARRAY, "java/lang/Object"));
    for (int i = 0; i < args.length; i++) {
        int paramIndex = i + 1;
        list.add(new InsnNode(Opcodes.DUP));
        list.add(new LdcInsnNode(i));
        list.add(new VarInsnNode(Opcodes.ALOAD, paramIndex));
        list.add(new InsnNode(Opcodes.AASTORE));
    }
    list.add(new InsnNode(Opcodes.ICONST_0));
    list.add(new TypeInsnNode(Opcodes.ANEWARRAY, "java/lang/Class"));
    list.add(new MethodInsnNode(INVOKEINTERFACE, "javax/validation/executable/ExecutableValidator",
            "validateParameters",
            "(Ljava/lang/Object;Ljava/lang/reflect/Method;[Ljava/lang/Object;[Ljava/lang/Class;)Ljava/util/Set;",
            true));
    list.add(new MethodInsnNode(INVOKESTATIC, "com/github/wreulicke/bean/validation/Constraints",
            "throwIfNeeded", "(Ljava/util/Set;)V", false));
    node.instructions.insert(list);
}

From source file:com.google.code.jconts.instrument.gen.AsyncMethodAdapter.java

License:Apache License

@Override
public void visitMethodInsn(int opcode, String owner, String name, String desc) {
    checkProlog();/*w w w .  j ava2s  .co m*/

    if (opcode == Opcodes.INVOKESTATIC && ASYNC_NAME.equals(owner) && ARETURN_NAME.equals(name)) {

        if (ARETURN_VOID_DESC.equals(desc)) {
            mv.visitInsn(Opcodes.ACONST_NULL);
        }

        // state variable
        target.visitVarInsn(Opcodes.ALOAD, info.isStatic() ? 0 : 1);
        mv.visitFieldInsn(Opcodes.GETFIELD, info.stateClassName, CONTINUATION_FIELD, CONTINUATION_DESC);
        mv.visitInsn(Opcodes.SWAP);
        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, CONTINUATION_NAME, CONTINUATION_INVOKE_NAME,
                CONTINUATION_INVOKE_DESC);

        // Will be dropped while replacing ARETURN with RETURN.
        // FIXME: Should verify this value is NOT used.
        mv.visitInsn(Opcodes.ACONST_NULL);
        return;
    }
    if (opcode == Opcodes.INVOKESTATIC && ASYNC_NAME.equals(owner) && AWAIT_NAME.equals(name)
            && AWAIT_DESC.equals(desc)) {

        // Computation<T> is on stack

        // FIXME: ...
        // if (stack.size() != 1) {
        // throw new IllegalStateException(
        // "Stack preserving is not supported!");
        // }

        int index = dispatchTable.size();

        // Save state
        List<Type> l = new ArrayList<Type>(locals);
        if (!info.isStatic()) {
            l.remove(0);
        }

        // state.varX = locX
        String[] vars = info.tracker.stateFields(l.toArray(new Type[0]));
        for (int i = 0; i < vars.length; ++i) {
            // state variable
            target.visitVarInsn(Opcodes.ALOAD, info.isStatic() ? 0 : 1);
            mv.visitVarInsn(l.get(i).getOpcode(Opcodes.ILOAD), i + info.thisOffset);
            mv.visitFieldInsn(Opcodes.PUTFIELD, info.stateClassName, vars[i], l.get(i).getDescriptor());
        }

        // Create instance of continuation
        // new Continuation([this, ]state, index);
        mv.visitTypeInsn(Opcodes.NEW, info.continuationClassName);
        mv.visitInsn(Opcodes.DUP);

        // "this' for new Continuation([this, ]state, index)
        if (!info.isStatic()) {
            mv.visitVarInsn(Opcodes.ALOAD, 0);
        }

        // state and index
        target.visitVarInsn(Opcodes.ALOAD, 0 + info.thisOffset);
        mv.visitIntInsn(Opcodes.BIPUSH, index);

        String ctorDesc;
        if (info.isStatic()) {
            ctorDesc = Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { info.stateType, Type.INT_TYPE });
        } else {
            ctorDesc = Type.getMethodDescriptor(Type.VOID_TYPE,
                    new Type[] { Type.getObjectType(info.owner), info.stateType, Type.INT_TYPE });
        }
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, info.continuationClassName, CTOR_NAME, ctorDesc);

        mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, COMPUTATION_NAME, COMPUTATION_EXECUTE_NAME,
                COMPUTATION_EXECUTE_DESC);
        super.visitInsn(Opcodes.RETURN);

        // Restore state
        // mv.visitFrame(Opcodes.F_SAME, 0, new Object[0], 0, new
        // Object[0]);
        Label label = new Label();

        int invokeIndex = dispatchTable.size();
        dispatchTable.add(label); // for invoke
        dispatchTable.add(label); // for setException
        mv.visitLabel(label);
        for (int i = 0; i < vars.length; ++i) {
            // state variable
            target.visitVarInsn(Opcodes.ALOAD, info.isStatic() ? 0 : 1);
            mv.visitFieldInsn(Opcodes.GETFIELD, info.stateClassName, vars[i], l.get(i).getDescriptor());
            mv.visitVarInsn(l.get(i).getOpcode(Opcodes.ISTORE), i + info.thisOffset);
        }

        // if (index == invokeIndex) goto invokeLabel;
        Label invokeLabel = new Label();
        target.visitVarInsn(Opcodes.ILOAD, 1 + info.thisOffset);
        mv.visitIntInsn(Opcodes.BIPUSH, invokeIndex);
        mv.visitJumpInsn(Opcodes.IF_ICMPEQ, invokeLabel);

        // Throw exception
        target.visitVarInsn(Opcodes.ALOAD, info.isStatic() ? 0 : 1);
        mv.visitFieldInsn(Opcodes.GETFIELD, info.stateClassName, "exception", THROWABLE_DESC);
        mv.visitInsn(Opcodes.ATHROW);

        // Push result value
        // invokeLabel:
        mv.visitLabel(invokeLabel);
        target.visitVarInsn(Opcodes.ALOAD, info.isStatic() ? 0 : 1);
        mv.visitFieldInsn(Opcodes.GETFIELD, info.stateClassName, "result", OBJECT_DESC);
        return;
    }
    super.visitMethodInsn(opcode, owner, name, desc);
}

From source file:com.google.code.jconts.instrument.gen.TramplineMethodGenerator.java

License:Apache License

public void accept(ClassVisitor cv) {
    MethodVisitor mv = cv.visitMethod(info.access, info.name, info.desc, info.signature, info.exceptions);
    mv.visitCode();//  www  . j ava 2  s . c o m
    mv.visitTypeInsn(Opcodes.NEW, info.computationClassName);
    mv.visitInsn(Opcodes.DUP);

    // "this' for new Computation(this, state)
    if (!info.isStatic()) {
        mv.visitVarInsn(Opcodes.ALOAD, 0);
    }

    // new State()
    mv.visitTypeInsn(Opcodes.NEW, info.stateClassName);
    mv.visitInsn(Opcodes.DUP);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, info.stateClassName, CTOR_NAME, DEFAULT_CTOR_DESC);

    // state.varX = argX
    String[] names = info.entryLocalsVars;
    for (int i = 0; i < info.entryLocals.length; ++i) {
        mv.visitInsn(Opcodes.DUP);
        mv.visitVarInsn(info.entryLocals[i].getOpcode(Opcodes.ILOAD), i + info.thisOffset);
        mv.visitFieldInsn(Opcodes.PUTFIELD, info.stateClassName, names[i], info.entryLocals[i].getDescriptor());
    }

    // new Computation(this, state);
    String ctorDesc;
    if (info.isStatic()) {
        ctorDesc = Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { info.stateType });
    } else {
        ctorDesc = Type.getMethodDescriptor(Type.VOID_TYPE,
                new Type[] { Type.getObjectType(info.owner), info.stateType });
    }
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, info.computationClassName, CTOR_NAME, ctorDesc);

    mv.visitInsn(Opcodes.ARETURN);
    mv.visitMaxs(info.isStatic() ? 5 : 6,
            info.isStatic() ? info.entryLocals.length : info.entryLocals.length + 1);
    mv.visitEnd();
}

From source file:com.google.devtools.build.android.desugar.BytecodeTypeInference.java

License:Open Source License

@Override
public void visitInsn(int opcode) {
    switch (opcode) {
    case Opcodes.NOP:
    case Opcodes.INEG:
    case Opcodes.LNEG:
    case Opcodes.FNEG:
    case Opcodes.DNEG:
    case Opcodes.I2B:
    case Opcodes.I2C:
    case Opcodes.I2S:
    case Opcodes.RETURN:
        break;//from www. ja  va 2s  .  c  o m
    case Opcodes.ACONST_NULL:
        push(InferredType.NULL);
        break;
    case Opcodes.ICONST_M1:
    case Opcodes.ICONST_0:
    case Opcodes.ICONST_1:
    case Opcodes.ICONST_2:
    case Opcodes.ICONST_3:
    case Opcodes.ICONST_4:
    case Opcodes.ICONST_5:
        push(InferredType.INT);
        break;
    case Opcodes.LCONST_0:
    case Opcodes.LCONST_1:
        push(InferredType.LONG);
        push(InferredType.TOP);
        break;
    case Opcodes.FCONST_0:
    case Opcodes.FCONST_1:
    case Opcodes.FCONST_2:
        push(InferredType.FLOAT);
        break;
    case Opcodes.DCONST_0:
    case Opcodes.DCONST_1:
        push(InferredType.DOUBLE);
        push(InferredType.TOP);
        break;
    case Opcodes.IALOAD:
    case Opcodes.BALOAD:
    case Opcodes.CALOAD:
    case Opcodes.SALOAD:
        pop(2);
        push(InferredType.INT);
        break;
    case Opcodes.LALOAD:
    case Opcodes.D2L:
        pop(2);
        push(InferredType.LONG);
        push(InferredType.TOP);
        break;
    case Opcodes.DALOAD:
    case Opcodes.L2D:
        pop(2);
        push(InferredType.DOUBLE);
        push(InferredType.TOP);
        break;
    case Opcodes.AALOAD:
        InferredType arrayType = pop(2);
        InferredType elementType = arrayType.getElementTypeIfArrayOrThrow();
        push(elementType);
        break;
    case Opcodes.IASTORE:
    case Opcodes.BASTORE:
    case Opcodes.CASTORE:
    case Opcodes.SASTORE:
    case Opcodes.FASTORE:
    case Opcodes.AASTORE:
        pop(3);
        break;
    case Opcodes.LASTORE:
    case Opcodes.DASTORE:
        pop(4);
        break;
    case Opcodes.POP:
    case Opcodes.IRETURN:
    case Opcodes.FRETURN:
    case Opcodes.ARETURN:
    case Opcodes.ATHROW:
    case Opcodes.MONITORENTER:
    case Opcodes.MONITOREXIT:
        pop();
        break;
    case Opcodes.POP2:
    case Opcodes.LRETURN:
    case Opcodes.DRETURN:
        pop(2);
        break;
    case Opcodes.DUP:
        push(top());
        break;
    case Opcodes.DUP_X1: {
        InferredType top = pop();
        InferredType next = pop();
        push(top);
        push(next);
        push(top);
        break;
    }
    case Opcodes.DUP_X2: {
        InferredType top = pop();
        InferredType next = pop();
        InferredType bottom = pop();
        push(top);
        push(bottom);
        push(next);
        push(top);
        break;
    }
    case Opcodes.DUP2: {
        InferredType top = pop();
        InferredType next = pop();
        push(next);
        push(top);
        push(next);
        push(top);
        break;
    }
    case Opcodes.DUP2_X1: {
        InferredType top = pop();
        InferredType next = pop();
        InferredType bottom = pop();
        push(next);
        push(top);
        push(bottom);
        push(next);
        push(top);
        break;
    }
    case Opcodes.DUP2_X2: {
        InferredType t1 = pop();
        InferredType t2 = pop();
        InferredType t3 = pop();
        InferredType t4 = pop();
        push(t2);
        push(t1);
        push(t4);
        push(t3);
        push(t2);
        push(t1);
        break;
    }
    case Opcodes.SWAP: {
        InferredType top = pop();
        InferredType next = pop();
        push(top);
        push(next);
        break;
    }
    case Opcodes.IADD:
    case Opcodes.ISUB:
    case Opcodes.IMUL:
    case Opcodes.IDIV:
    case Opcodes.IREM:
    case Opcodes.ISHL:
    case Opcodes.ISHR:
    case Opcodes.IUSHR:
    case Opcodes.IAND:
    case Opcodes.IOR:
    case Opcodes.IXOR:
    case Opcodes.L2I:
    case Opcodes.D2I:
    case Opcodes.FCMPL:
    case Opcodes.FCMPG:
        pop(2);
        push(InferredType.INT);
        break;

    case Opcodes.LADD:
    case Opcodes.LSUB:
    case Opcodes.LMUL:
    case Opcodes.LDIV:
    case Opcodes.LREM:
    case Opcodes.LAND:
    case Opcodes.LOR:
    case Opcodes.LXOR:
        pop(4);
        push(InferredType.LONG);
        push(InferredType.TOP);
        break;

    case Opcodes.LSHL:
    case Opcodes.LSHR:
    case Opcodes.LUSHR:
        pop(3);
        push(InferredType.LONG);
        push(InferredType.TOP);
        break;
    case Opcodes.I2L:
    case Opcodes.F2L:
        pop();
        push(InferredType.LONG);
        push(InferredType.TOP);
        break;
    case Opcodes.I2F:
        pop();
        push(InferredType.FLOAT);
        break;

    case Opcodes.LCMP:
    case Opcodes.DCMPG:
    case Opcodes.DCMPL:
        pop(4);
        push(InferredType.INT);
        break;

    case Opcodes.I2D:
    case Opcodes.F2D:
        pop();
        push(InferredType.DOUBLE);
        push(InferredType.TOP);
        break;
    case Opcodes.F2I:
    case Opcodes.ARRAYLENGTH:
        pop();
        push(InferredType.INT);
        break;
    case Opcodes.FALOAD:
    case Opcodes.FADD:
    case Opcodes.FSUB:
    case Opcodes.FMUL:
    case Opcodes.FDIV:
    case Opcodes.FREM:
    case Opcodes.L2F:
    case Opcodes.D2F:
        pop(2);
        push(InferredType.FLOAT);
        break;

    case Opcodes.DADD:
    case Opcodes.DSUB:
    case Opcodes.DMUL:
    case Opcodes.DDIV:
    case Opcodes.DREM:
        pop(4);
        push(InferredType.DOUBLE);
        push(InferredType.TOP);
        break;
    default:
        throw new RuntimeException("Unhandled opcode " + opcode);
    }
    super.visitInsn(opcode);
}

From source file:com.google.devtools.build.android.desugar.LambdaClassFixer.java

License:Open Source License

@Override
public void visitEnd() {
    checkState(!hasState || hasFactory, "Expected factory method for capturing lambda %s", getInternalName());
    if (!hasState) {
        checkState(signature == null, "Didn't expect generic constructor signature %s %s", getInternalName(),
                signature);/*from w  ww. j  a  v a2  s.c o  m*/
        checkState(lambdaInfo.factoryMethodDesc().startsWith("()"),
                "Expected 0-arg factory method for %s but found %s", getInternalName(),
                lambdaInfo.factoryMethodDesc());
        // Since this is a stateless class we populate and use a static singleton field "$instance".
        // Field is package-private so we can read it from the class that had the invokedynamic.
        String singletonFieldDesc = lambdaInfo.factoryMethodDesc().substring("()".length());
        super.visitField(Opcodes.ACC_STATIC | Opcodes.ACC_FINAL, SINGLETON_FIELD_NAME, singletonFieldDesc,
                (String) null, (Object) null).visitEnd();

        MethodVisitor codeBuilder = super.visitMethod(Opcodes.ACC_STATIC, "<clinit>", "()V", (String) null,
                new String[0]);
        codeBuilder.visitTypeInsn(Opcodes.NEW, getInternalName());
        codeBuilder.visitInsn(Opcodes.DUP);
        codeBuilder.visitMethodInsn(Opcodes.INVOKESPECIAL, getInternalName(), "<init>",
                checkNotNull(desc, "didn't see a constructor for %s", getInternalName()), /*itf*/ false);
        codeBuilder.visitFieldInsn(Opcodes.PUTSTATIC, getInternalName(), SINGLETON_FIELD_NAME,
                singletonFieldDesc);
        codeBuilder.visitInsn(Opcodes.RETURN);
        codeBuilder.visitMaxs(2, 0); // two values are pushed onto the stack
        codeBuilder.visitEnd();
    }

    copyRewrittenLambdaMethods();
    if (!allowDefaultMethods) {
        copyBridgeMethods(interfaces);
    }
    super.visitEnd();
}

From source file:com.google.devtools.build.android.desugar.LambdaDesugaring.java

License:Open Source License

@Override
public void visitEnd() {
    for (Map.Entry<Handle, MethodReferenceBridgeInfo> bridge : bridgeMethods.entrySet()) {
        Handle original = bridge.getKey();
        Handle neededMethod = bridge.getValue().bridgeMethod();
        checkState(/*from ww w.  ja  v  a 2  s .c o m*/
                neededMethod.getTag() == Opcodes.H_INVOKESTATIC
                        || neededMethod.getTag() == Opcodes.H_INVOKEVIRTUAL,
                "Cannot generate bridge method %s to reach %s", neededMethod, original);
        checkState(bridge.getValue().referenced() != null, "Need referenced method %s to generate bridge %s",
                original, neededMethod);

        int access = Opcodes.ACC_BRIDGE | Opcodes.ACC_SYNTHETIC | Opcodes.ACC_FINAL;
        if (neededMethod.getTag() == Opcodes.H_INVOKESTATIC) {
            access |= Opcodes.ACC_STATIC;
        }
        MethodVisitor bridgeMethod = super.visitMethod(access, neededMethod.getName(), neededMethod.getDesc(),
                (String) null, toInternalNames(bridge.getValue().referenced().getExceptionTypes()));

        // Bridge is a factory method calling a constructor
        if (original.getTag() == Opcodes.H_NEWINVOKESPECIAL) {
            bridgeMethod.visitTypeInsn(Opcodes.NEW, original.getOwner());
            bridgeMethod.visitInsn(Opcodes.DUP);
        }

        int slot = 0;
        if (neededMethod.getTag() != Opcodes.H_INVOKESTATIC) {
            bridgeMethod.visitVarInsn(Opcodes.ALOAD, slot++);
        }
        Type neededType = Type.getMethodType(neededMethod.getDesc());
        for (Type arg : neededType.getArgumentTypes()) {
            bridgeMethod.visitVarInsn(arg.getOpcode(Opcodes.ILOAD), slot);
            slot += arg.getSize();
        }
        bridgeMethod.visitMethodInsn(invokeOpcode(original), original.getOwner(), original.getName(),
                original.getDesc(), original.isInterface());
        bridgeMethod.visitInsn(neededType.getReturnType().getOpcode(Opcodes.IRETURN));

        bridgeMethod.visitMaxs(0, 0); // rely on class writer to compute these
        bridgeMethod.visitEnd();
    }
    super.visitEnd();
}

From source file:com.google.devtools.build.wireless.testing.java.injector.j2me.J2mePrintServant.java

License:Apache License

/**
 * Initialize a string buffer.//from   www.  ja  v  a 2  s.  c o  m
 *
 * @see PrintServant#initializePrinting()
 */
@Override
protected void initializePrinting() {
    mv.visitTypeInsn(Opcodes.NEW, ClassNames.STRING_BUFFER);
    mv.visitInsn(Opcodes.DUP);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, ClassNames.STRING_BUFFER, "<init>", "()V");
}

From source file:com.google.devtools.build.wireless.testing.java.injector.TypeDescriptor.java

License:Apache License

/**
 * Creates an instance of {@link TypeDescriptor}.
 * /*from w w w  . j  a  v a 2 s  . c  o  m*/
 * @param description The description of this type.
 * @param dupOpcode The opcode to be used to duplicate this type.
 * @param loadOpcode The opcode to be used to duplicate this type.
 * @param storeOpcode The opcode to be used to duplicate this type.
 */
private TypeDescriptor(char description, int dupOpcode, int loadOpcode, int storeOpcode) {
    this(description, (dupOpcode == Opcodes.DUP) ? 1 : 2, dupOpcode, loadOpcode, storeOpcode);
}

From source file:com.google.devtools.build.wireless.testing.java.injector.TypeDescriptorTest.java

License:Apache License

/**
 * Test method for {@link TypeDescriptor#getDupOpcode()}.
 *///  w  w w .  j  av a 2 s  .  co m
public void testGetDupOpcode() {
    try {
        TypeDescriptor.VOID.getDupOpcode();
        fail("Void should have thrown an exception!");
    } catch (IllegalStateException e) {
        // OK!
    }
    assertEquals("Wrong DUP instruction", Opcodes.DUP, TypeDescriptor.BOOLEAN.getDupOpcode());
    assertEquals("Wrong DUP instruction", Opcodes.DUP, TypeDescriptor.BYTE.getDupOpcode());
    assertEquals("Wrong DUP instruction", Opcodes.DUP, TypeDescriptor.CHAR.getDupOpcode());
    assertEquals("Wrong DUP instruction", Opcodes.DUP, TypeDescriptor.INTEGER.getDupOpcode());
    assertEquals("Wrong DUP instruction", Opcodes.DUP, TypeDescriptor.SHORT.getDupOpcode());
    assertEquals("Wrong DUP instruction", Opcodes.DUP2, TypeDescriptor.LONG.getDupOpcode());
    assertEquals("Wrong DUP instruction", Opcodes.DUP, TypeDescriptor.FLOAT.getDupOpcode());
    assertEquals("Wrong DUP instruction", Opcodes.DUP2, TypeDescriptor.DOUBLE.getDupOpcode());
    assertEquals("Wrong DUP instruction", Opcodes.DUP, TypeDescriptor.CLASS.getDupOpcode());
    assertEquals("Wrong DUP instruction", Opcodes.DUP, TypeDescriptor.ARRAY.getDupOpcode());
}