Package com.manning.nettyinaction.chapter14

Examples of com.manning.nettyinaction.chapter14.Opcode


        List<Task> switchPayloadTasks = Lists.newArrayList();
        index = 0;
        for (final Instruction instruction: methodImplementation.getInstructions()) {
            final MethodLocation location = instructionList.get(index);
            final Opcode opcode = instruction.getOpcode();
            if (opcode == Opcode.PACKED_SWITCH_PAYLOAD || opcode == Opcode.SPARSE_SWITCH_PAYLOAD) {
                switchPayloadTasks.add(new Task() {
                    @Override public void perform() {
                        convertAndSetInstruction(location, codeAddressToIndex, instruction);
                    }
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            opcode == Opcode.THROW_VERIFICATION_ERROR;
    }

    @Override
    public boolean writeTo(IndentingWriter writer) throws IOException {
        Opcode opcode = instruction.getOpcode();
        String verificationErrorName = null;
        String referenceString = null;

        boolean commentOutInstruction = false;

        if (instruction instanceof Instruction20bc) {
            int verificationError = ((Instruction20bc)instruction).getVerificationError();
            verificationErrorName = VerificationError.getVerificationErrorName(verificationError);
            if (verificationErrorName == null) {
                writer.write("#was invalid verification error type: ");
                writer.printSignedIntAsDec(verificationError);
                writer.write("\n");
                verificationErrorName = "generic-error";
            }
        }

        if (instruction instanceof ReferenceInstruction) {
            ReferenceInstruction referenceInstruction = (ReferenceInstruction)instruction;
            try {
                Reference reference = referenceInstruction.getReference();

                String classContext = null;
                if (methodDef.classDef.options.useImplicitReferences) {
                    classContext = methodDef.method.getDefiningClass();
                }

                referenceString = ReferenceUtil.getReferenceString(reference, classContext);
                assert referenceString != null;
            } catch (InvalidItemIndex ex) {
                writer.write("#");
                writer.write(ex.getMessage());
                writer.write("\n");
                commentOutInstruction = true;

                referenceString = String.format("%s@%d",
                    ReferenceType.toString(referenceInstruction.getReferenceType()),
                    ex.getInvalidIndex());
            } catch (ReferenceType.InvalidReferenceTypeException ex) {
                writer.write("#invalid reference type: ");
                writer.printSignedIntAsDec(ex.getReferenceType());
                commentOutInstruction = true;

                referenceString = "invalid_reference";
            }
        }

        if (instruction instanceof Instruction31t) {
            Opcode payloadOpcode;
            switch (instruction.getOpcode()) {
                case PACKED_SWITCH:
                    payloadOpcode = Opcode.PACKED_SWITCH_PAYLOAD;
                    break;
                case SPARSE_SWITCH:
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    public LabelMethodItem getLabel() {
        return label;
    }

    private String getLabelPrefix() {
        Opcode opcode = instruction.getOpcode();
        switch (opcode.format) {
            case Format10t:
            case Format20t:
            case Format30t:
                return "goto_";
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            instructionOffsetMap = new InstructionOffsetMap(instructions);

            for (int i=0; i<instructions.size(); i++) {
                Instruction instruction = instructions.get(i);

                Opcode opcode = instruction.getOpcode();
                if (opcode == Opcode.PACKED_SWITCH) {
                    boolean valid = true;
                    int codeOffset = instructionOffsetMap.getInstructionCodeOffset(i);
                    int targetOffset = codeOffset + ((OffsetInstruction)instruction).getCodeOffset();
                    try {
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                    }
                });
            }

            if (!classDef.options.noAccessorComments && (instruction instanceof ReferenceInstruction)) {
                Opcode opcode = instruction.getOpcode();

                if (opcode.referenceType == ReferenceType.METHOD) {
                    MethodReference methodReference = null;
                    try {
                        methodReference = (MethodReference)((ReferenceInstruction)instruction).getReference();
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        if (opcodeValue == 0) {
            opcodeValue = reader.peekUshort();
        }

        Opcode opcode = reader.dexBuf.getOpcodes().getOpcodeByValue(opcodeValue);

        Instruction instruction = buildInstruction(reader.dexBuf, opcode, reader.getOffset());
        reader.moveRelative(instruction.getCodeUnits()*2);
        return instruction;
    }
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        AnalyzedInstruction[][] exceptionHandlers = new AnalyzedInstruction[instructions.size()][];

        if (tries != null) {
            for (int i=0; i< analyzedInstructions.size(); i++) {
                AnalyzedInstruction instruction = analyzedInstructions.valueAt(i);
                Opcode instructionOpcode = instruction.instruction.getOpcode();
                currentCodeAddress = getInstructionAddress(instruction);

                //check if we have gone past the end of the current try
                if (currentTry != null) {
                    if (currentTry.getStartCodeAddress() + currentTry.getCodeUnitCount()  <= currentCodeAddress) {
                        currentTry = null;
                        triesIndex++;
                    }
                }

                //check if the next try is applicable yet
                if (currentTry == null && triesIndex < tries.size()) {
                    TryBlock<? extends ExceptionHandler> tryBlock = tries.get(triesIndex);
                    if (tryBlock.getStartCodeAddress() <= currentCodeAddress) {
                        assert(tryBlock.getStartCodeAddress() + tryBlock.getCodeUnitCount() > currentCodeAddress);

                        currentTry = tryBlock;

                        currentExceptionHandlers = buildExceptionHandlerArray(tryBlock);
                    }
                }

                //if we're inside a try block, and the instruction can throw an exception, then add the exception handlers
                //for the current instruction
                if (currentTry != null && instructionOpcode.canThrow()) {
                    exceptionHandlers[i] = currentExceptionHandlers;
                }
            }
        }

        //finally, populate the successors and predecessors for each instruction. We start at the fake "StartOfMethod"
        //instruction and follow the execution path. Any unreachable code won't have any predecessors or successors,
        //and no reachable code will have an unreachable predessor or successor
        assert analyzedInstructions.size() > 0;
        BitSet instructionsToProcess = new BitSet(instructions.size());

        addPredecessorSuccessor(startOfMethod, analyzedInstructions.valueAt(0), exceptionHandlers, instructionsToProcess);
        while (!instructionsToProcess.isEmpty()) {
            int currentInstructionIndex = instructionsToProcess.nextSetBit(0);
            instructionsToProcess.clear(currentInstructionIndex);

            AnalyzedInstruction instruction = analyzedInstructions.valueAt(currentInstructionIndex);
            Opcode instructionOpcode = instruction.instruction.getOpcode();
            int instructionCodeAddress = getInstructionAddress(instruction);

            if (instruction.instruction.getOpcode().canContinue()) {
                if (currentInstructionIndex == analyzedInstructions.size() - 1) {
                    throw new AnalysisException("Execution can continue past the last instruction");
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        }

        Instruction35mi instruction = (Instruction35mi)analyzedInstruction.instruction;
        Method resolvedMethod = inlineResolver.resolveExecuteInline(analyzedInstruction);

        Opcode deodexedOpcode;
        int acccessFlags = resolvedMethod.getAccessFlags();
        if (AccessFlags.STATIC.isSet(acccessFlags)) {
            deodexedOpcode = Opcode.INVOKE_STATIC;
        } else if (AccessFlags.PRIVATE.isSet(acccessFlags)) {
            deodexedOpcode = Opcode.INVOKE_DIRECT;
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        }

        Instruction3rmi instruction = (Instruction3rmi)analyzedInstruction.instruction;
        Method resolvedMethod = inlineResolver.resolveExecuteInline(analyzedInstruction);

        Opcode deodexedOpcode;
        int acccessFlags = resolvedMethod.getAccessFlags();
        if (AccessFlags.STATIC.isSet(acccessFlags)) {
            deodexedOpcode = Opcode.INVOKE_STATIC_RANGE;
        } else if (AccessFlags.PRIVATE.isSet(acccessFlags)) {
            deodexedOpcode = Opcode.INVOKE_DIRECT_RANGE;
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                    resolvedField.getType());
        }

        String fieldType = resolvedField.getType();

        Opcode opcode = OdexedFieldInstructionMapper.getAndCheckDeodexedOpcodeForOdexedOpcode(fieldType,
                instruction.getOpcode());

        Instruction22c deodexedInstruction = new ImmutableInstruction22c(opcode, (byte)instruction.getRegisterA(),
                (byte)instruction.getRegisterB(), resolvedField);
        analyzedInstruction.setDeodexedInstruction(deodexedInstruction);
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