Example usage for org.objectweb.asm Opcodes CHECKCAST

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

Introduction

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

Prototype

int CHECKCAST

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

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Usage

From source file:org.evosuite.graphs.cfg.BytecodeInstructionPool.java

License:Open Source License

/**
 * Determine how many bytes the current instruction occupies together with
 * its operands/*w ww  . j  av a 2s  . co m*/
 * 
 * @return
 */
private int getBytecodeIncrement(AbstractInsnNode instructionNode) {
    int opcode = instructionNode.getOpcode();
    switch (opcode) {
    case Opcodes.ALOAD: // index
    case Opcodes.ASTORE: // index
    case Opcodes.DLOAD:
    case Opcodes.DSTORE:
    case Opcodes.FLOAD:
    case Opcodes.FSTORE:
    case Opcodes.ILOAD:
    case Opcodes.ISTORE:
    case Opcodes.LLOAD:
    case Opcodes.LSTORE:
        VarInsnNode varNode = (VarInsnNode) instructionNode;
        if (varNode.var > 3)
            return 1;
        else
            return 0;
    case Opcodes.BIPUSH: // byte
    case Opcodes.NEWARRAY:
    case Opcodes.RET:
        return 1;
    case Opcodes.LDC:
        LdcInsnNode ldcNode = (LdcInsnNode) instructionNode;
        if (ldcNode.cst instanceof Double || ldcNode.cst instanceof Long)
            return 2; // LDC2_W
        else
            return 1;
    case 19: //LDC_W
    case 20: //LDC2_W
        return 2;
    case Opcodes.ANEWARRAY: // indexbyte1, indexbyte2
    case Opcodes.CHECKCAST: // indexbyte1, indexbyte2
    case Opcodes.GETFIELD:
    case Opcodes.GETSTATIC:
    case Opcodes.GOTO:
    case Opcodes.IF_ACMPEQ:
    case Opcodes.IF_ACMPNE:
    case Opcodes.IF_ICMPEQ:
    case Opcodes.IF_ICMPNE:
    case Opcodes.IF_ICMPGE:
    case Opcodes.IF_ICMPGT:
    case Opcodes.IF_ICMPLE:
    case Opcodes.IF_ICMPLT:
    case Opcodes.IFLE:
    case Opcodes.IFLT:
    case Opcodes.IFGE:
    case Opcodes.IFGT:
    case Opcodes.IFNE:
    case Opcodes.IFEQ:
    case Opcodes.IFNONNULL:
    case Opcodes.IFNULL:
    case Opcodes.IINC:
    case Opcodes.INSTANCEOF:
    case Opcodes.INVOKESPECIAL:
    case Opcodes.INVOKESTATIC:
    case Opcodes.INVOKEVIRTUAL:
    case Opcodes.JSR:
    case Opcodes.NEW:
    case Opcodes.PUTFIELD:
    case Opcodes.PUTSTATIC:
    case Opcodes.SIPUSH:
        // case Opcodes.LDC_W
        // case Opcodes.LDC2_W

        return 2;
    case Opcodes.MULTIANEWARRAY:
        return 3;
    case Opcodes.INVOKEDYNAMIC:
    case Opcodes.INVOKEINTERFACE:
        return 4;

    case Opcodes.LOOKUPSWITCH:
    case Opcodes.TABLESWITCH:
        // TODO: Could be more
        return 4;
    // case Opcodes.GOTO_W 
    // case Opcodes.JSR_W
    }
    return 0;
}

From source file:org.evosuite.instrumentation.error.CastErrorInstrumentation.java

License:Open Source License

@Override
public void visitTypeInsn(int opcode, String type) {

    if (opcode == Opcodes.CHECKCAST) {
        Label origTarget = new Label();
        // Label origTarget = new AnnotatedLabel();
        // origTarget.info = Boolean.FALSE;
        mv.visitInsn(Opcodes.DUP);//from  ww w .  java2 s .  com
        mv.tagBranch();
        mv.visitJumpInsn(Opcodes.IFNULL, origTarget);
        mv.visitInsn(Opcodes.DUP);
        mv.visitTypeInsn(Opcodes.INSTANCEOF, type);
        mv.tagBranch();
        mv.visitJumpInsn(Opcodes.IFNE, origTarget);
        mv.visitTypeInsn(Opcodes.NEW, "java/lang/ClassCastException");
        mv.visitInsn(Opcodes.DUP);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/ClassCastException", "<init>", "()V", false);
        mv.visitInsn(Opcodes.ATHROW);
        mv.visitLabel(origTarget);
        mv.tagBranchExit();
    }
}

From source file:org.evosuite.instrumentation.testability.transformer.BooleanArrayIndexTransformer.java

License:Open Source License

@Override
protected AbstractInsnNode transformTypeInsnNode(MethodNode mn, TypeInsnNode typeNode) {
    if (frames == null)
        return typeNode;

    if (typeNode.getOpcode() == Opcodes.CHECKCAST) {
        Frame current = frames[mn.instructions.indexOf(typeNode)];
        int size = current.getStackSize();
        if (current.getStack(size - 1) == BooleanArrayInterpreter.INT_ARRAY) {
            BooleanTestabilityTransformation.logger.info("Array is of boolean type, changing CHECKCAST to [I");
            TypeInsnNode replacement = new TypeInsnNode(Opcodes.CHECKCAST, "[I");
            mn.instructions.insertBefore(typeNode, replacement);
            mn.instructions.remove(typeNode);
            return replacement;
        }//ww  w .  j  a  v a2 s . c om
    }
    return typeNode;
}

From source file:org.evosuite.instrumentation.testability.transformer.BooleanCallsTransformer.java

License:Open Source License

@Override
protected AbstractInsnNode transformMethodInsnNode(MethodNode mn, MethodInsnNode methodNode) {
    if (methodNode.owner.equals(Type.getInternalName(BooleanHelper.class)))
        return methodNode;

    methodNode.desc = this.booleanTestabilityTransformation.transformMethodDescriptor(methodNode.owner,
            methodNode.name, methodNode.desc);
    methodNode.name = DescriptorMapping.getInstance().getMethodName(methodNode.owner, methodNode.name,
            methodNode.desc);//from   ww w .  j a  v  a  2 s.  c  om
    if (DescriptorMapping.getInstance().isBooleanMethod(methodNode.desc)) {
        BooleanTestabilityTransformation.logger.info("Method needs value transformation: " + methodNode.name);
        if (DescriptorMapping.getInstance().hasBooleanParameters(methodNode.desc)) {
            BooleanTestabilityTransformation.logger
                    .info("Method needs parameter transformation: " + methodNode.name);
            TransformationStatistics.transformBackToBooleanParameter();
            int firstBooleanParameterIndex = -1;
            Type[] types = Type.getArgumentTypes(methodNode.desc);
            for (int i = 0; i < types.length; i++) {
                if (types[i].getDescriptor().equals("Z")) {
                    if (firstBooleanParameterIndex == -1) {
                        firstBooleanParameterIndex = i;
                        break;
                    }
                }
            }
            if (firstBooleanParameterIndex != -1) {
                int numOfPushs = types.length - 1 - firstBooleanParameterIndex;
                //                        int numOfPushs = types.length - firstBooleanParameterIndex;

                if (numOfPushs == 0) {
                    if (!(methodNode.getPrevious().getOpcode() == Opcodes.ICONST_1
                            || methodNode.getPrevious().getOpcode() == Opcodes.ICONST_0)) {

                        //the boolean parameter is the last parameter
                        MethodInsnNode booleanHelperInvoke = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                Type.getInternalName(BooleanHelper.class), "intToBoolean",
                                Type.getMethodDescriptor(Type.BOOLEAN_TYPE, new Type[] { Type.INT_TYPE }));
                        mn.instructions.insertBefore(methodNode, booleanHelperInvoke);
                    }
                } else {
                    InsnList insnlist = new InsnList();

                    for (int i = 0; i < numOfPushs; i++) {
                        MethodInsnNode booleanHelperPushParameter;
                        if (types[types.length - 1 - i] == Type.BOOLEAN_TYPE
                                || types[types.length - 1 - i] == Type.CHAR_TYPE
                                || types[types.length - 1 - i] == Type.BYTE_TYPE
                                || types[types.length - 1 - i] == Type.SHORT_TYPE
                                || types[types.length - 1 - i] == Type.INT_TYPE
                                || types[types.length - 1 - i] == Type.FLOAT_TYPE
                                || types[types.length - 1 - i] == Type.LONG_TYPE
                                || types[types.length - 1 - i] == Type.DOUBLE_TYPE) {
                            if (types[types.length - 1 - i] == Type.BOOLEAN_TYPE) {
                                booleanHelperPushParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                        Type.getInternalName(BooleanHelper.class), "pushParameter",
                                        Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { Type.INT_TYPE }));
                            } else {
                                booleanHelperPushParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                        Type.getInternalName(BooleanHelper.class), "pushParameter",
                                        Type.getMethodDescriptor(Type.VOID_TYPE,
                                                new Type[] { types[types.length - 1 - i] }));
                            }
                        } else {
                            booleanHelperPushParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                    Type.getInternalName(BooleanHelper.class), "pushParameter",
                                    Type.getMethodDescriptor(Type.VOID_TYPE,
                                            new Type[] { Type.getType(Object.class) }));
                        }

                        insnlist.add(booleanHelperPushParameter);
                    }
                    for (int i = firstBooleanParameterIndex; i < types.length; i++) {
                        if (i == firstBooleanParameterIndex) {
                            MethodInsnNode booleanHelperInvoke = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                    Type.getInternalName(BooleanHelper.class), "intToBoolean",
                                    Type.getMethodDescriptor(Type.BOOLEAN_TYPE, new Type[] { Type.INT_TYPE }));
                            insnlist.add(booleanHelperInvoke);
                        } else {
                            MethodInsnNode booleanHelperPopParameter;
                            boolean objectNeedCast = false;
                            if (types[i] == Type.BOOLEAN_TYPE) {
                                booleanHelperPopParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                        Type.getInternalName(BooleanHelper.class), "popParameterBooleanFromInt",
                                        Type.getMethodDescriptor(types[i], new Type[] {}));
                            } else if (types[i] == Type.CHAR_TYPE) {
                                booleanHelperPopParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                        Type.getInternalName(BooleanHelper.class), "popParameterChar",
                                        Type.getMethodDescriptor(types[i], new Type[] {}));
                            } else if (types[i] == Type.BYTE_TYPE) {
                                booleanHelperPopParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                        Type.getInternalName(BooleanHelper.class), "popParameterByte",
                                        Type.getMethodDescriptor(types[i], new Type[] {}));
                            } else if (types[i] == Type.SHORT_TYPE) {
                                booleanHelperPopParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                        Type.getInternalName(BooleanHelper.class), "popParameterShort",
                                        Type.getMethodDescriptor(types[i], new Type[] {}));
                            } else if (types[i] == Type.INT_TYPE) {
                                booleanHelperPopParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                        Type.getInternalName(BooleanHelper.class), "popParameterInt",
                                        Type.getMethodDescriptor(types[i], new Type[] {}));
                            } else if (types[i] == Type.FLOAT_TYPE) {
                                booleanHelperPopParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                        Type.getInternalName(BooleanHelper.class), "popParameterFloat",
                                        Type.getMethodDescriptor(types[i], new Type[] {}));
                            } else if (types[i] == Type.LONG_TYPE) {
                                booleanHelperPopParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                        Type.getInternalName(BooleanHelper.class), "popParameterLong",
                                        Type.getMethodDescriptor(types[i], new Type[] {}));
                            } else if (types[i] == Type.DOUBLE_TYPE) {
                                booleanHelperPopParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                        Type.getInternalName(BooleanHelper.class), "popParameterDouble",
                                        Type.getMethodDescriptor(types[i], new Type[] {}));
                            } else {
                                objectNeedCast = true;
                                booleanHelperPopParameter = new MethodInsnNode(Opcodes.INVOKESTATIC,
                                        Type.getInternalName(BooleanHelper.class), "popParameterObject",
                                        Type.getMethodDescriptor(Type.getType(Object.class), new Type[] {}));
                            }

                            insnlist.add(booleanHelperPopParameter);
                            if (objectNeedCast) {
                                TypeInsnNode tin = new TypeInsnNode(Opcodes.CHECKCAST,
                                        types[i].getInternalName());
                                insnlist.add(tin);
                            }
                        }

                    }
                    mn.instructions.insertBefore(methodNode, insnlist);
                }
            }
        }
        if (Type.getReturnType(methodNode.desc).equals(Type.BOOLEAN_TYPE)) {
            BooleanTestabilityTransformation.logger
                    .info("Method needs return transformation: " + methodNode.name);
            TransformationStatistics.transformBackToBooleanParameter();
            MethodInsnNode n = new MethodInsnNode(Opcodes.INVOKESTATIC,
                    Type.getInternalName(BooleanHelper.class), "booleanToInt",
                    Type.getMethodDescriptor(Type.INT_TYPE, new Type[] { Type.BOOLEAN_TYPE }));
            mn.instructions.insert(methodNode, n);
            return n;
        }
    } else {
        BooleanTestabilityTransformation.logger.info("Method needs no transformation: " + methodNode.name);
    }

    // TODO: If this is a method that is not transformed, and it requires a Boolean parameter
    // then we need to convert this boolean back to an int
    // For example, we could use flow analysis to determine the point where the value is added to the stack
    // and insert a conversion function there
    return methodNode;
}

From source file:org.evosuite.runtime.instrumentation.MethodCallReplacement.java

License:Open Source License

public void insertInvokeSpecialForMockedSuperclass(MethodCallReplacementMethodAdapter mv) {
    int numArguments = Type.getArgumentTypes(replacementDesc).length;
    mv.push(numArguments);//from  www.  j  a  v  a2s.  c  om
    mv.newArray(Type.getType(Object.class));
    for (int i = 0; i < numArguments; i++) {
        // param, array         
        mv.dupX1(); // array, param, array         
        mv.swap(); // array, array, param         
        mv.push(numArguments - i - 1); // array, array, param, index
        mv.swap(); // array, array, index, param         
        mv.arrayStore(Type.getType(Object.class));
        // array
    }
    mv.push(methodName);
    mv.push(desc);
    Method invokeSpecialMethod = InvokeSpecialMock.class.getDeclaredMethods()[0];

    mv.visitMethodInsn(Opcodes.INVOKESTATIC, InvokeSpecialMock.class.getCanonicalName().replace('.', '/'),
            "invokeSpecial", Type.getMethodDescriptor(invokeSpecialMethod), false);

    if (Type.getReturnType(desc).equals(Type.VOID_TYPE)) {
        mv.pop();
    } else {
        mv.visitTypeInsn(Opcodes.CHECKCAST, Type.getReturnType(desc).getInternalName());
    }

}

From source file:org.evosuite.seeding.CastClassAnalyzer.java

License:Open Source License

/**
 * Add all possible calls for a given method
 * //from   ww w.  ja v a 2  s .  c o m
 * @param callGraph
 * @param mn
 */
@SuppressWarnings("unchecked")
public void handleMethodNode(ClassNode cn, MethodNode mn, int depth) {

    if (mn.signature != null) {
        logger.debug("Visiting signature: " + mn.signature);
        CollectParameterTypesVisitor visitor = new CollectParameterTypesVisitor(cn.name);
        new SignatureReader(mn.signature).accept(visitor);
        for (Type castType : visitor.getClasses()) {
            if (!castClassMap.containsKey(castType)) {
                logger.debug("Adding new cast class from signature visitor: " + castType);
                castClassMap.put(castType, depth + 1);
            }
        }
    }

    InsnList instructions = mn.instructions;
    Iterator<AbstractInsnNode> iterator = instructions.iterator();

    // TODO: This really shouldn't be here but in its own class
    while (iterator.hasNext()) {
        AbstractInsnNode insn = iterator.next();
        if (insn.getOpcode() == Opcodes.CHECKCAST) {
            TypeInsnNode typeNode = (TypeInsnNode) insn;
            Type castType = Type.getObjectType(typeNode.desc);
            while (castType.getSort() == Type.ARRAY) {
                castType = castType.getElementType();
            }
            logger.debug("Adding new cast class from cast: " + castType);
            if (!castClassMap.containsKey(castType))
                castClassMap.put(castType, depth + 1);
        } else if (insn.getOpcode() == Opcodes.INSTANCEOF) {
            TypeInsnNode typeNode = (TypeInsnNode) insn;
            Type castType = Type.getObjectType(typeNode.desc);
            while (castType.getSort() == Type.ARRAY) {
                castType = castType.getElementType();
            }
            logger.debug("Adding new cast class from instanceof: " + castType);
            if (!castClassMap.containsKey(castType))
                castClassMap.put(castType, depth + 1);
        } else if (insn.getOpcode() == Opcodes.LDC) {
            LdcInsnNode ldcNode = (LdcInsnNode) insn;
            if (ldcNode.cst instanceof Type) {
                Type type = (Type) ldcNode.cst;
                while (type.getSort() == Type.ARRAY) {
                    type = type.getElementType();
                }
                if (!castClassMap.containsKey(type))
                    castClassMap.put(type, depth + 1);
            }

        }
    }
}

From source file:org.evosuite.testcarver.instrument.Instrumenter.java

License:Open Source License

@SuppressWarnings("unchecked")
private void transformWrapperCalls(MethodNode mn) {
    Iterator<AbstractInsnNode> iterator = mn.instructions.iterator();
    List<Class<?>> wrapperClasses = getWrapperClasses();

    while (iterator.hasNext()) {
        AbstractInsnNode insn = iterator.next();
        if (insn instanceof MethodInsnNode) {
            MethodInsnNode methodInsnNode = (MethodInsnNode) insn;
            if (methodInsnNode.name.equals("<init>")) {
                String ownerName = methodInsnNode.owner.replace('/', '.');
                for (Class<?> wrapperClass : wrapperClasses) {
                    if (wrapperClass.getName().equals(ownerName)) {
                        logger.debug("Replacing call " + methodInsnNode.name);
                        methodInsnNode.owner = "org/evosuite/testcarver/wrapper/" + methodInsnNode.owner;
                        break;
                    }/* ww  w.  ja  v  a2s  . co  m*/
                }
            } else {
                String ownerName = methodInsnNode.owner.replace('/', '.');
                for (Class<?> wrapperClass : wrapperClasses) {
                    if (wrapperClass.getName().equals(ownerName)) {
                        if (methodInsnNode.getOpcode() == Opcodes.INVOKESTATIC) {
                            logger.debug("Replacing call " + methodInsnNode.name);
                            methodInsnNode.owner = PackageInfo.getEvoSuitePackageWithSlash()
                                    + "/testcarver/wrapper/" + methodInsnNode.owner;
                        }
                        Type[] parameterTypes = Type.getArgumentTypes(methodInsnNode.desc);
                        try {
                            Class<?>[] parameterClasses = new Class<?>[parameterTypes.length];
                            int pos = 0;
                            for (Type parameter : parameterTypes) {
                                switch (parameter.getSort()) {
                                case Type.OBJECT:
                                    parameterClasses[pos++] = Class.forName(parameter.getClassName());
                                    break;
                                case Type.BOOLEAN:
                                    parameterClasses[pos++] = boolean.class;
                                    break;
                                case Type.BYTE:
                                    parameterClasses[pos++] = byte.class;
                                    break;
                                case Type.CHAR:
                                    parameterClasses[pos++] = char.class;
                                    break;
                                case Type.DOUBLE:
                                    parameterClasses[pos++] = double.class;
                                    break;
                                case Type.FLOAT:
                                    parameterClasses[pos++] = float.class;
                                    break;
                                case Type.INT:
                                    parameterClasses[pos++] = int.class;
                                    break;
                                case Type.LONG:
                                    parameterClasses[pos++] = long.class;
                                    break;
                                case Type.SHORT:
                                    parameterClasses[pos++] = short.class;
                                    break;
                                }
                            }
                            Method method = wrapperClass.getMethod(methodInsnNode.name, parameterClasses);
                            if (Modifier.isFinal(method.getModifiers())) {
                                if (methodInsnNode.getOpcode() != Opcodes.INVOKESTATIC) {
                                    methodInsnNode.setOpcode(Opcodes.INVOKESTATIC);
                                    Type[] args = Type.getArgumentTypes(methodInsnNode.desc);
                                    Type returnType = Type.getReturnType(methodInsnNode.desc);
                                    Type[] newargs = new Type[args.length + 1];
                                    newargs[0] = Type.getObjectType(methodInsnNode.owner);
                                    for (int i = 0; i < args.length; i++)
                                        newargs[i + 1] = args[i];
                                    methodInsnNode.desc = Type.getMethodDescriptor(returnType, newargs);
                                    methodInsnNode.owner = PackageInfo.getEvoSuitePackageWithSlash()
                                            + "/testcarver/wrapper/" + methodInsnNode.owner;
                                } else {
                                    methodInsnNode.name += "_final";
                                }
                                logger.debug(
                                        "Method is final: " + methodInsnNode.owner + "." + methodInsnNode.name);
                            } else {
                                logger.debug("Method is not final: " + methodInsnNode.owner + "."
                                        + methodInsnNode.name);
                            }
                        } catch (Exception e) {
                            logger.warn("Error while instrumenting: " + e);
                        }

                        break;
                    }
                }
                //            } else if(methodInsnNode.name.equals("getTime")) {
                //               if(methodInsnNode.owner.equals("java/util/Calendar")) {
                //                  logger.debug("Replacing call "+methodInsnNode.name);
                //                  methodInsnNode.owner = "org/evosuite/testcarver/wrapper/java/util/Calendar";
                //                  methodInsnNode.name = "getTime";
                //                  methodInsnNode.desc = "(Ljava/util/Calendar;)Ljava/util/Date;";
                //                  methodInsnNode.setOpcode(Opcodes.INVOKESTATIC);
                //               }
                //            }
            }
        } else if (insn.getOpcode() == Opcodes.NEW || insn.getOpcode() == Opcodes.CHECKCAST) {
            TypeInsnNode typeInsnNode = (TypeInsnNode) insn;
            Type generatedType = Type.getType(typeInsnNode.desc);
            String name = generatedType.getInternalName().replace('/', '.');
            logger.debug("Checking for replacement of " + name);
            for (Class<?> wrapperClass : wrapperClasses) {
                if (wrapperClass.getName().equals(name)) {
                    logger.debug("Replacing new " + name);
                    typeInsnNode.desc = PackageInfo.getEvoSuitePackageWithSlash() + "/testcarver/wrapper/"
                            + generatedType.getInternalName();
                    break;
                }
            }

        }
    }
}

From source file:org.fabric3.implementation.bytecode.reflection.BytecodeConsumerInvokerFactory.java

License:Open Source License

private void writeTargetInvoke(Method method, String internalTargetName, ClassWriter cw) {
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "invoke",
            "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;", null, EXCEPTIONS);
    mv.visitCode();/*from  w w w  .j a v a  2s .  co m*/
    Label label1 = new Label();
    mv.visitLabel(label1);
    mv.visitLineNumber(9, label1);
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitTypeInsn(Opcodes.CHECKCAST, internalTargetName);

    if (method.getParameterTypes().length == 1) {
        // single argument method, load the parameter passes on to the stack
        Class<?> paramType = method.getParameterTypes()[0];
        mv.visitVarInsn(Opcodes.ALOAD, 2);

        writeParam(paramType, mv);

    } else if (method.getParameterTypes().length > 1) {
        // multi-argument method: cast the parameter to an object array and then load each element on the stack to be passed as params
        mv.visitVarInsn(Opcodes.ALOAD, 2);

        mv.visitTypeInsn(Opcodes.CHECKCAST, "[Ljava/lang/Object;");
        mv.visitTypeInsn(Opcodes.CHECKCAST, "[Ljava/lang/Object;");
        mv.visitVarInsn(Opcodes.ASTORE, 3);

        int pos = 0;
        mv.visitVarInsn(Opcodes.ALOAD, 3);
        for (Class<?> paramType : method.getParameterTypes()) {
            mv.visitInsn(Opcodes.ICONST_0 + pos);
            mv.visitInsn(Opcodes.AALOAD);

            writeParam(paramType, mv);

            if (pos < method.getParameterTypes().length - 1) {
                mv.visitVarInsn(Opcodes.ALOAD, 3);
            }
            pos++;
        }
    }

    // invoke the instance
    String methodName = method.getName();
    String methodDescriptor = Type.getMethodDescriptor(method);

    mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, internalTargetName, methodName, methodDescriptor);

    Class<?> returnType = method.getReturnType();
    writeReturn(returnType, mv);

    Label label2 = new Label();
    mv.visitLabel(label2);
    String descriptor = Type.getDescriptor(ServiceInvoker.class);

    mv.visitLocalVariable("this", descriptor, null, label1, label2, 0);
    mv.visitLocalVariable("instance", "Ljava/lang/Object;", null, label1, label2, 1);
    mv.visitLocalVariable("arg", "Ljava/lang/Object;", null, label1, label2, 2);
    mv.visitMaxs(2, 3);
    mv.visitEnd();
}

From source file:org.fabric3.implementation.bytecode.reflection.BytecodeConsumerInvokerFactory.java

License:Open Source License

private void writeParam(Class<?> paramType, MethodVisitor mv) {
    if (Integer.TYPE.equals(paramType)) {
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Integer");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Integer", "intValue", "()I");
    } else if (Boolean.TYPE.equals(paramType)) {
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Boolean");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Boolean", "booleanValue", "()Z");
    } else if (Double.TYPE.equals(paramType)) {
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Double");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Double", "doubleValue", "()D");
    } else if (Float.TYPE.equals(paramType)) {
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Float");
        mv.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Float", "floatValue", "()F");
    } else if (Short.TYPE.equals(paramType)) {
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Short");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Short", "shortValue", "()S");
    } else if (Byte.TYPE.equals(paramType)) {
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Byte");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Byte", "byteValue", "()B");
    } else if (Long.TYPE.equals(paramType)) {
        mv.visitTypeInsn(Opcodes.CHECKCAST, "java/lang/Long");
        mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Long", "longValue", "()J");
    } else {//  w ww .ja  v  a2s.  c  o m
        mv.visitTypeInsn(Opcodes.CHECKCAST, Type.getInternalName(paramType));
    }
}

From source file:org.gradle.model.internal.manage.schema.extract.ManagedProxyClassGenerator.java

License:Apache License

private void putNodeStateFieldValueOnStack(MethodVisitor methodVisitor, Type generatedType) {
    putFieldValueOnStack(methodVisitor, generatedType, STATE_FIELD_NAME, GENERATED_VIEW_STATE_TYPE);
    methodVisitor.visitTypeInsn(Opcodes.CHECKCAST, MODEL_ELEMENT_STATE_TYPE_INTERNAL_NAME);
}