Example usage for org.objectweb.asm Opcodes IRETURN

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

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

Prototype

int IRETURN

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

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Usage

From source file:io.awacs.plugin.springmvc.ServiceWrapper.java

License:Apache License

/**
 * origin method: (XXX)X//from   ww w.  j  av a 2s.c o  m
 * <p>
 * proxy method: (XXXLjavax/servlet/http/HttpServletRequest;)X
 * req -> localIndex - 1
 *
 * @param cn
 * @param origin
 * @return
 */
private MethodNode doProxy(ClassNode cn, MethodNode origin) {

    MethodNode newNode = copyMethod(origin);
    //move annotations
    hideAnnotations(origin);

    LabelNode l0 = new LabelNode();
    LabelNode l1 = new LabelNode();
    LabelNode l2 = new LabelNode();

    String returnType = origin.desc.substring(origin.desc.indexOf(')') + 1);

    int localIndex = copyParameters(origin, newNode, l0, l2);

    newNode.tryCatchBlocks.add(new TryCatchBlockNode(l0, l1, l2, "java/lang/Exception"));

    //localIndex -> elapsedTime
    newNode.localVariables.add(new LocalVariableNode("elapsedTime", "J", null, l0, l1, localIndex));

    //
    newNode.instructions.add(l0);

    // long elapsedTime = System.currentTimeMillis();
    newNode.instructions
            .add(new MethodInsnNode(Opcodes.INVOKESTATIC, "java/lang/System", "currentTimeMillis", "()J"));
    newNode.instructions.add(new VarInsnNode(Opcodes.LSTORE, localIndex));

    int paramCount = getParamCount(origin.desc, origin.access);

    //load?
    for (int i = 0; i < paramCount; i++) {
        LocalVariableNode node = (LocalVariableNode) newNode.localVariables.get(i);
        switch (node.desc) {
        case "J":
            newNode.instructions.add(new VarInsnNode(Opcodes.LLOAD, node.index));
            break;
        case "D":
            newNode.instructions.add(new VarInsnNode(Opcodes.DLOAD, node.index));
            break;
        case "F":
            newNode.instructions.add(new VarInsnNode(Opcodes.FLOAD, node.index));
            break;
        case "I":
            newNode.instructions.add(new VarInsnNode(Opcodes.ILOAD, node.index));
            break;
        case "S":
            newNode.instructions.add(new VarInsnNode(Opcodes.ILOAD, node.index));
            break;
        case "Z":
            newNode.instructions.add(new VarInsnNode(Opcodes.ILOAD, node.index));
            break;
        case "B":
            newNode.instructions.add(new VarInsnNode(Opcodes.ILOAD, node.index));
            break;
        case "C":
            newNode.instructions.add(new VarInsnNode(Opcodes.ILOAD, node.index));
            break;
        default:
            newNode.instructions.add(new VarInsnNode(Opcodes.ALOAD, node.index));
            break;
        }
    }
    //
    newNode.instructions.add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL, cn.name, origin.name, origin.desc));

    //
    newNode.instructions
            .add(new MethodInsnNode(Opcodes.INVOKESTATIC, "java/lang/System", "currentTimeMillis", "()J"));
    newNode.instructions.add(new VarInsnNode(Opcodes.LLOAD, localIndex));
    newNode.instructions.add(new InsnNode(Opcodes.LSUB));
    newNode.instructions.add(new VarInsnNode(Opcodes.LSTORE, localIndex));

    newNode.instructions.add(new VarInsnNode(Opcodes.ALOAD, localIndex - 1));
    newNode.instructions.add(new MethodInsnNode(Opcodes.INVOKEINTERFACE,
            "javax/servlet/http/HttpServletRequest", "getRequestURI", "()Ljava/lang/String;"));

    //?
    newNode.instructions.add(new VarInsnNode(Opcodes.LLOAD, localIndex));
    //SpringmvcPlugin.incrAccess(uri, elapsedTime);
    newNode.instructions.add(new MethodInsnNode(Opcodes.INVOKESTATIC,
            "io/awacs/plugin/springmvc/SpringmvcPlugin", "incrAccess", "(Ljava/lang/String;J)V"));
    //
    newNode.instructions.add(l1);
    switch (returnType) {
    case "J":
        newNode.instructions.add(new InsnNode(Opcodes.LRETURN));
        break;
    case "D":
        newNode.instructions.add(new InsnNode(Opcodes.DRETURN));
        break;
    case "F":
        newNode.instructions.add(new InsnNode(Opcodes.FRETURN));
        break;
    case "I":
        newNode.instructions.add(new InsnNode(Opcodes.IRETURN));
        break;
    case "S":
        newNode.instructions.add(new InsnNode(Opcodes.IRETURN));
        break;
    case "C":
        newNode.instructions.add(new InsnNode(Opcodes.IRETURN));
        break;
    case "B":
        newNode.instructions.add(new InsnNode(Opcodes.IRETURN));
        break;
    case "Z":
        newNode.instructions.add(new InsnNode(Opcodes.IRETURN));
        break;
    default:
        newNode.instructions.add(new InsnNode(Opcodes.ARETURN));
        break;
    }

    newNode.instructions.add(l2);
    newNode.instructions
            .add(new FrameNode(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/Exception" }));
    newNode.instructions.add(new VarInsnNode(Opcodes.ASTORE, localIndex));

    newNode.instructions.add(new VarInsnNode(Opcodes.ALOAD, localIndex - 1));
    newNode.instructions.add(new MethodInsnNode(Opcodes.INVOKEINTERFACE,
            "javax/servlet/http/HttpServletRequest", "getRequestURI", "()Ljava/lang/String;"));

    newNode.instructions.add(new VarInsnNode(Opcodes.ALOAD, localIndex));
    newNode.instructions
            .add(new MethodInsnNode(Opcodes.INVOKESTATIC, "io/awacs/plugin/springmvc/SpringmvcPlugin",
                    "incrFailure", "(Ljava/lang/String;Ljava/lang/Throwable;)V"));

    newNode.instructions.add(new VarInsnNode(Opcodes.ALOAD, localIndex));
    newNode.instructions.add(new InsnNode(Opcodes.ATHROW));
    newNode.maxLocals = origin.maxLocals + 3;
    newNode.maxStack = Math.max(localIndex + 2, 6);
    return newNode;
}

From source file:io.awacs.plugin.stacktrace.ClassTransformer.java

License:Apache License

/**
 * ?//from   ww  w. j  av  a 2 s  . c o m
 * 1?try catch?                 try{
 * 2????        io.awacs.plugin.stacktrace.StackFrames.init();
 * 3????                io.awacs.plugin.stacktrace.StackFrames.push(className,methodName,0);
 * 4?                          Object val = methodName_origin_className(args);
 * 5?????                io.awacs.plugin.stacktrace.StackFrames.push(className,methodName,1);
 * 5???          List list = io.awacs.plugin.stacktrace.StackFrames.dump();
 * 7?????          io.awacs.plugin.stacktrace.StackTracePlugin.incrAccess(list);
 * 8?                          return val;
 * }catch(java.lang.Exception e){
 * 9??                io.awacs.plugin.stacktrace.StackTracePlugin.incrFailure(e);
 * 10?               throw e;
 * }
 */
private void transformTerminatedMethod(MethodNode origin, MethodNode proxy, ClassNode owner) {
    LabelNode l0 = new LabelNode();
    LabelNode l1 = new LabelNode();
    LabelNode l2 = new LabelNode();
    //try catch?
    proxy.tryCatchBlocks.add(new TryCatchBlockNode(l0, l1, l2, "java/lang/Exception"));
    proxy.instructions.add(l0);
    //?
    proxy.instructions.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "io/awacs/plugin/stacktrace/StackFrames",
            "init", "()V", false));
    proxy.instructions.add(new LdcInsnNode(owner.name.replaceAll("/", ".")));
    proxy.instructions.add(new LdcInsnNode(proxy.name));
    proxy.instructions.add(new LdcInsnNode(0));
    //
    proxy.instructions.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "io/awacs/plugin/stacktrace/StackFrames",
            "push", "(Ljava/lang/String;Ljava/lang/String;I)V", false));
    int varIndex = 0;//???
    //???,????this?
    if ((proxy.access & Opcodes.ACC_STATIC) != Opcodes.ACC_STATIC) {
        proxy.instructions.add(new VarInsnNode(Opcodes.ALOAD, 0));
        varIndex = 1;
    }
    List<String> parameters = resolveParameters(proxy.desc);
    //???
    for (String param : parameters) {
        VarInsnNode insnNode;
        switch (param) {
        case "J":
            insnNode = new VarInsnNode(Opcodes.LLOAD, varIndex);
            varIndex += 2;
            break;
        case "D":
            insnNode = new VarInsnNode(Opcodes.DLOAD, varIndex);
            varIndex += 2;
            break;
        case "F":
            insnNode = new VarInsnNode(Opcodes.FLOAD, varIndex++);
            break;
        case "I":
            insnNode = new VarInsnNode(Opcodes.ILOAD, varIndex++);
            break;
        case "S":
            insnNode = new VarInsnNode(Opcodes.ILOAD, varIndex++);
            break;
        case "Z":
            insnNode = new VarInsnNode(Opcodes.ILOAD, varIndex++);
            break;
        case "B":
            insnNode = new VarInsnNode(Opcodes.ILOAD, varIndex++);
            break;
        case "C":
            insnNode = new VarInsnNode(Opcodes.ILOAD, varIndex++);
            break;
        default:
            insnNode = new VarInsnNode(Opcodes.ALOAD, varIndex++);
            break;
        }
        proxy.instructions.add(insnNode);
    }
    //
    if ((origin.access & Opcodes.ACC_STATIC) == Opcodes.ACC_STATIC)
        proxy.instructions
                .add(new MethodInsnNode(Opcodes.INVOKESTATIC, owner.name, origin.name, origin.desc, false));
    else
        proxy.instructions
                .add(new MethodInsnNode(Opcodes.INVOKEVIRTUAL, owner.name, origin.name, origin.desc, false));
    proxy.instructions.add(new LdcInsnNode(owner.name.replaceAll("/", ".")));
    proxy.instructions.add(new LdcInsnNode(proxy.name));
    proxy.instructions.add(new LdcInsnNode(1));
    //?
    proxy.instructions.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "io/awacs/plugin/stacktrace/StackFrames",
            "push", "(Ljava/lang/String;Ljava/lang/String;I)V", false));
    //??
    proxy.instructions.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "io/awacs/plugin/stacktrace/StackFrames",
            "dump", "()Ljava/util/List;", false));
    //???
    proxy.instructions.add(new MethodInsnNode(Opcodes.INVOKESTATIC,
            "io/awacs/plugin/stacktrace/StackTracePlugin", "incrAccess", "(Ljava/util/List;)V", false));
    proxy.instructions.add(l1);
    //
    String returnType = origin.desc.substring(origin.desc.indexOf(')') + 1);
    switch (returnType) {
    case "J":
        proxy.instructions.add(new InsnNode(Opcodes.LRETURN));
        break;
    case "D":
        proxy.instructions.add(new InsnNode(Opcodes.DRETURN));
        break;
    case "F":
        proxy.instructions.add(new InsnNode(Opcodes.FRETURN));
        break;
    case "I":
        proxy.instructions.add(new InsnNode(Opcodes.IRETURN));
        break;
    case "S":
        proxy.instructions.add(new InsnNode(Opcodes.IRETURN));
        break;
    case "C":
        proxy.instructions.add(new InsnNode(Opcodes.IRETURN));
        break;
    case "B":
        proxy.instructions.add(new InsnNode(Opcodes.IRETURN));
        break;
    case "Z":
        proxy.instructions.add(new InsnNode(Opcodes.IRETURN));
        break;
    case "V":
        proxy.instructions.add(new InsnNode(Opcodes.RETURN));
        break;
    default:
        proxy.instructions.add(new InsnNode(Opcodes.ARETURN));
        break;
    }
    proxy.instructions.add(l2);
    //?
    proxy.instructions.add(new FrameNode(Opcodes.F_SAME1, 0, null, 1, new Object[] { "java/lang/Exception" }));
    proxy.instructions.add(new VarInsnNode(Opcodes.ASTORE, varIndex));
    proxy.instructions.add(new VarInsnNode(Opcodes.ALOAD, varIndex));
    proxy.instructions.add(new MethodInsnNode(Opcodes.INVOKESTATIC,
            "io/awacs/plugin/stacktrace/StackTracePlugin", "incrFailure", "(Ljava/lang/Throwable;)V", false));
    proxy.instructions.add(new VarInsnNode(Opcodes.ALOAD, varIndex));
    proxy.instructions.add(new InsnNode(Opcodes.ATHROW));
    proxy.maxLocals = varIndex + 1;
    proxy.maxStack = Math.max(varIndex, 5);
}

From source file:io.awacs.plugin.stacktrace.ClassTransformer.java

License:Apache License

/**
 * ??//from  ww  w  .jav  a 2  s.  c  om
 * 1?StackFrames.push(0)???
 * 2???this???
 * 3?StackFrames.push(1)???
 * 4??
 */
private void transformPlainMethod(MethodNode mn, ClassNode cn) {
    InsnList before = new InsnList();
    before.add(new LdcInsnNode(cn.name.replaceAll("/", ".")));
    before.add(new LdcInsnNode(mn.name));
    before.add(new LdcInsnNode(0));
    before.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "io/awacs/plugin/stacktrace/StackFrames", "push",
            "(Ljava/lang/String;Ljava/lang/String;I)V", false));
    InsnList end = new InsnList();
    end.add(new LdcInsnNode(cn.name.replaceAll("/", ".")));
    end.add(new LdcInsnNode(mn.name));
    end.add(new LdcInsnNode(1));
    end.add(new MethodInsnNode(Opcodes.INVOKESTATIC, "io/awacs/plugin/stacktrace/StackFrames", "push",
            "(Ljava/lang/String;Ljava/lang/String;I)V", false));

    List<AbstractInsnNode> insts = new LinkedList<>();
    for (int i = 0; i < mn.instructions.size(); i++) {
        int opcode = mn.instructions.get(i).getOpcode();
        if (opcode >= Opcodes.IRETURN && opcode <= Opcodes.RETURN) {
            insts.add(mn.instructions.get(i));
        }
    }
    if (!insts.isEmpty()) {
        mn.instructions.insert(before);
        for (AbstractInsnNode node : insts) {
            mn.instructions.insertBefore(node, end);
        }
    }
    mn.maxStack = mn.maxStack + 5;
}

From source file:io.syncframework.optimizer.OControllerClassVisitor.java

License:Apache License

/**
 * Generates this code:/* ww w .  j  av  a  2 s . co  m*/
 * 
 * public boolean _asActionIsDefined(String name) {
 *    if(_asActions.containsKey(name))
 *       return true;
 *    return false;
 * }
 */
public void createActionIsDefinedMethod() {
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC, "_asActionIsDefined", "(Ljava/lang/String;)Z", null,
            null);
    Label l0 = new Label();
    Label l1 = new Label();
    Label l2 = new Label();
    Label l3 = new Label();

    mv.visitLabel(l0);
    mv.visitFieldInsn(Opcodes.GETSTATIC, reflector.getClazzInternalName(), "_asActions", "Ljava/util/Map;");
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitMethodInsn(Opcodes.INVOKEINTERFACE, "java/util/Map", "containsKey", "(Ljava/lang/Object;)Z", true);
    mv.visitJumpInsn(Opcodes.IFEQ, l1);

    mv.visitLabel(l2);
    mv.visitInsn(Opcodes.ICONST_1);
    mv.visitInsn(Opcodes.IRETURN);

    mv.visitLabel(l1);
    mv.visitFrame(Opcodes.F_SAME, 0, null, 0, null);
    mv.visitInsn(Opcodes.ICONST_0);
    mv.visitInsn(Opcodes.IRETURN);

    mv.visitLabel(l3);
    mv.visitLocalVariable("this", reflector.getClazzDescriptor(), null, l0, l3, 0);
    mv.visitLocalVariable("name", "Ljava/lang/String;", null, l0, l3, 1);
    mv.visitMaxs(2, 2);

    mv.visitEnd();
}

From source file:jasy.lang.ASMCompiler.java

private static boolean isReturn(int opcode) {
    switch (opcode) {
    case Opcodes.ARETURN:
    case Opcodes.DRETURN:
    case Opcodes.FRETURN:
    case Opcodes.IRETURN:
    case Opcodes.RET:
    case Opcodes.RETURN:
        return true;
    }/*w  w w  .j av a2 s. c o  m*/

    return false;
}

From source file:jasy.lang.ASMCompiler.java

private static int getReturn(Class<?> type) {
    String typeDescriptor = Type.getDescriptor(type);
    switch (typeDescriptor) {
    case "V":
        return Opcodes.RETURN;
    case "J":
        return Opcodes.LRETURN;
    case "D":
        return Opcodes.DRETURN;
    case "F":
        return Opcodes.FRETURN;
    case "I":
    case "Z":
    case "B":
    case "C":
    case "S":
        return Opcodes.IRETURN;
    default://w ww.java2 s  .  c  o m
        return Opcodes.ARETURN;
    }
}

From source file:jerl.bcm.inj.InjectionMethodAdapter.java

License:Apache License

@Override
public void visitInsn(int opcode) {
    incByteCodeCounter();/*w  w w .  j  a  v  a2s  .  co  m*/
    if (opcode == Opcodes.IRETURN || opcode == Opcodes.LRETURN || opcode == Opcodes.FRETURN
            || opcode == Opcodes.DRETURN || opcode == Opcodes.ARETURN || opcode == Opcodes.RETURN) {
        for (int i = 0; i < exitInjections.size(); i++) {
            InjectionMethodExit ime = (InjectionMethodExit) exitInjections.elementAt(i);
            ime.inject(mv);
            if (isDebugMode) {
                System.out.println("\t**Inject: " + ime);
            }
        }
    }
    mv.visitInsn(opcode);
}

From source file:jp.co.dgic.testing.common.virtualmock.asm.AbstractAsmMethodVisitor.java

License:Open Source License

protected int getReturnOpcodeByType(Type type) {
    if (type.equals(Type.BOOLEAN_TYPE))
        return Opcodes.IRETURN;
    if (type.equals(Type.BYTE_TYPE))
        return Opcodes.IRETURN;
    if (type.equals(Type.CHAR_TYPE))
        return Opcodes.IRETURN;
    if (type.equals(Type.SHORT_TYPE))
        return Opcodes.IRETURN;
    if (type.equals(Type.INT_TYPE))
        return Opcodes.IRETURN;
    if (type.equals(Type.LONG_TYPE))
        return Opcodes.LRETURN;
    if (type.equals(Type.DOUBLE_TYPE))
        return Opcodes.DRETURN;
    if (type.equals(Type.FLOAT_TYPE))
        return Opcodes.FRETURN;
    return Opcodes.ARETURN;
}

From source file:jpcsp.Allegrex.compiler.CodeBlock.java

License:Open Source License

private void addNonStaticMethods(CompilerContext context, ClassVisitor cv) {
    MethodVisitor mv;//  ww  w  .  j  a  v a2s.  c  o  m

    // public int exec(int returnAddress, int alternativeReturnAddress, boolean isJump) throws Exception;
    mv = cv.visitMethod(Opcodes.ACC_PUBLIC, context.getExecMethodName(), context.getExecMethodDesc(), null,
            exceptions);
    mv.visitCode();
    mv.visitMethodInsn(Opcodes.INVOKESTATIC, getClassName(), context.getStaticExecMethodName(),
            context.getStaticExecMethodDesc());
    mv.visitInsn(Opcodes.IRETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();

    // private static IExecutable e;
    FieldVisitor fv = cv.visitField(Opcodes.ACC_PRIVATE | Opcodes.ACC_STATIC, context.getReplaceFieldName(),
            executableDescriptor, null, null);
    fv.visitEnd();

    // public void setExecutable(IExecutable e);
    mv = cv.visitMethod(Opcodes.ACC_PUBLIC, context.getReplaceMethodName(), context.getReplaceMethodDesc(),
            null, exceptions);
    mv.visitCode();
    mv.visitVarInsn(Opcodes.ALOAD, 1);
    mv.visitFieldInsn(Opcodes.PUTSTATIC, getClassName(), context.getReplaceFieldName(), executableDescriptor);
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(1, 2);
    mv.visitEnd();

    // public IExecutable getExecutable();
    mv = cv.visitMethod(Opcodes.ACC_PUBLIC, context.getGetMethodName(), context.getGetMethodDesc(), null,
            exceptions);
    mv.visitCode();
    mv.visitFieldInsn(Opcodes.GETSTATIC, getClassName(), context.getReplaceFieldName(), executableDescriptor);
    mv.visitInsn(Opcodes.ARETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
}

From source file:jpcsp.Allegrex.compiler.CompilerContext.java

License:Open Source License

public void visitJump() {
    flushInstructionCount(true, false);
    checkSync();

    endMethod();
    mv.visitInsn(Opcodes.IRETURN);
}