Example usage for org.objectweb.asm Opcodes ALOAD

Introduction

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

Prototype

int ALOAD

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

Click Source Link

Usage

From source file:lucee.transformer.bytecode.Page.java

License:Open Source License

private void writeOutCallBody(BytecodeContext bc, Body body, int pageType) throws BytecodeException {
    // Other//w w  w.j a va2  s .co  m
    List<IFunction> functions = new ArrayList<IFunction>();
    getFunctions(functions, bc, body, pageType);

    String className = Types.UDF_PROPERTIES_ARRAY.toString();
    //FieldVisitor fv = bc.getClassWriter().visitField(Opcodes.ACC_PRIVATE , "udfs",className , null, null);
    //fv.visitEnd();

    BytecodeContext constr = bc.getConstructor();
    GeneratorAdapter cga = constr.getAdapter();

    cga.visitVarInsn(Opcodes.ALOAD, 0);
    cga.push(functions.size());
    //cga.visitTypeInsn(Opcodes.ANEWARRAY, Types.UDF_PROPERTIES.toString());
    cga.newArray(Types.UDF_PROPERTIES);
    cga.visitFieldInsn(Opcodes.PUTFIELD, bc.getClassName(), "udfs", className);

    Iterator<IFunction> it = functions.iterator();
    while (it.hasNext()) {
        it.next().writeOut(bc, pageType);
    }

    if (pageType == IFunction.PAGE_TYPE_COMPONENT) {
        GeneratorAdapter adapter = bc.getAdapter();
        adapter.loadArg(1);
        adapter.loadArg(0);
        adapter.visitVarInsn(Opcodes.ALOAD, 0);
        adapter.invokeVirtual(Types.COMPONENT_IMPL, CHECK_INTERFACE);

    }
    if (pageType != IFunction.PAGE_TYPE_INTERFACE) {
        //BodyBase.writeOut(bc.getStaticConstructor(),bc.getConstructor(),bc.getKeys(),body.getStatements(), bc);
        BodyBase.writeOut(bc, body);
    }
}

---

From source file:lucee.transformer.bytecode.reflection.ASMProxyFactory.java

License:Open Source License

private static byte[] _createMethod(Type type, Class clazz, Method method, Resource classRoot, String className)
        throws IOException {
    Class<?> rtn = method.getReturnType();
    Type rtnType = Type.getType(rtn);

    className = className.replace('.', File.separatorChar);
    ClassWriter cw = ASMUtil.getClassWriter();
    cw.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC, className, null, ASM_METHOD.getInternalName(), null);

    // CONSTRUCTOR

    GeneratorAdapter adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, CONSTRUCTOR, null, null, cw);

    Label begin = new Label();
    adapter.visitLabel(begin);/*from w  w w . j  a  va2  s . c  om*/
    adapter.loadThis();

    adapter.visitVarInsn(Opcodes.ALOAD, 1);
    adapter.visitVarInsn(Opcodes.ALOAD, 2);

    adapter.invokeConstructor(ASM_METHOD, CONSTRUCTOR);
    adapter.visitInsn(Opcodes.RETURN);

    Label end = new Label();
    adapter.visitLabel(end);

    adapter.endMethod();

    /*
             
        GeneratorAdapter adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC,CONSTRUCTOR,null,null,cw);
                
        Label begin = new Label();
         adapter.visitLabel(begin);
       adapter.loadThis();
                 
        // clazz
         adapter.visitVarInsn(Opcodes.ALOAD, 2);
                 
         // parameterTypes 
         Class<?>[] params = method.getParameterTypes();
         Type[] paramTypes = new Type[params.length];
        ArrayVisitor av=new ArrayVisitor();
        av.visitBegin(adapter, Types.CLASS, params.length);
        for(int i=0;i<params.length;i++){
           paramTypes[i]=Type.getType(params[i]);
           av.visitBeginItem(adapter, i);
     loadClass(adapter,params[i]);
           av.visitEndItem(adapter);
        }
        av.visitEnd();
                
       adapter.invokeConstructor(ASM_METHOD, ASM_METHOD_CONSTRUCTOR);
       adapter.visitInsn(Opcodes.RETURN);
               
       Label end = new Label();
       adapter.visitLabel(end);
               
       adapter.endMethod();
     */

    // METHOD getName();
    adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, GET_NAME, null, null, cw);
    adapter.push(method.getName());
    adapter.visitInsn(Opcodes.ARETURN);
    adapter.endMethod();

    // METHOD getModifiers();
    adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, GET_MODIFIERS, null, null, cw);
    adapter.push(method.getModifiers());
    adapter.visitInsn(Opcodes.IRETURN);
    adapter.endMethod();

    // METHOD getReturnType();
    adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, GET_RETURN_TYPE_AS_STRING, null, null, cw);

    adapter.push(method.getReturnType().getName());
    adapter.visitInsn(Opcodes.ARETURN);

    adapter.endMethod();

    // METHOD INVOKE
    boolean isStatic = Modifier.isStatic(method.getModifiers());
    adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, INVOKE, null, null, cw);
    Label start = adapter.newLabel();
    adapter.visitLabel(start);

    // load Object
    if (!isStatic) {
        adapter.visitVarInsn(Opcodes.ALOAD, 1);
        adapter.checkCast(type);
    }

    // load params
    Class<?>[] params = method.getParameterTypes();

    Type[] paramTypes = new Type[params.length];
    for (int i = 0; i < params.length; i++) {
        paramTypes[i] = Type.getType(params[i]);
    }

    for (int i = 0; i < params.length; i++) {
        adapter.visitVarInsn(Opcodes.ALOAD, 2);
        adapter.push(i);
        //adapter.visitInsn(Opcodes.ICONST_0);
        adapter.visitInsn(Opcodes.AALOAD);

        adapter.checkCast(toReferenceType(params[i], paramTypes[i]));

        // cast
        if (params[i] == boolean.class)
            adapter.invokeVirtual(Types.BOOLEAN, BOOL_VALUE);
        else if (params[i] == short.class)
            adapter.invokeVirtual(Types.SHORT, SHORT_VALUE);
        else if (params[i] == int.class)
            adapter.invokeVirtual(Types.INTEGER, INT_VALUE);
        else if (params[i] == float.class)
            adapter.invokeVirtual(Types.FLOAT, FLT_VALUE);
        else if (params[i] == long.class)
            adapter.invokeVirtual(Types.LONG, LONG_VALUE);
        else if (params[i] == double.class)
            adapter.invokeVirtual(Types.DOUBLE, DBL_VALUE);
        else if (params[i] == char.class)
            adapter.invokeVirtual(Types.CHARACTER, CHR_VALUE);
        else if (params[i] == byte.class)
            adapter.invokeVirtual(Types.BYTE, BYT_VALUE);
        //else adapter.checkCast(paramTypes[i]);

    }

    // call method
    final org.objectweb.asm.commons.Method m = new org.objectweb.asm.commons.Method(method.getName(), rtnType,
            paramTypes);
    if (isStatic)
        adapter.invokeStatic(type, m);
    else
        adapter.invokeVirtual(type, m);

    // return
    if (rtn == void.class)
        ASMConstants.NULL(adapter);

    // cast result to object
    if (rtn == boolean.class)
        adapter.invokeStatic(Types.BOOLEAN, BOOL_VALUE_OF);
    else if (rtn == short.class)
        adapter.invokeStatic(Types.SHORT, SHORT_VALUE_OF);
    else if (rtn == int.class)
        adapter.invokeStatic(Types.INTEGER, INT_VALUE_OF);
    else if (rtn == long.class)
        adapter.invokeStatic(Types.LONG, LONG_VALUE_OF);
    else if (rtn == float.class)
        adapter.invokeStatic(Types.FLOAT, FLT_VALUE_OF);
    else if (rtn == double.class)
        adapter.invokeStatic(Types.DOUBLE, DBL_VALUE_OF);
    else if (rtn == char.class)
        adapter.invokeStatic(Types.CHARACTER, CHR_VALUE_OF);
    else if (rtn == byte.class)
        adapter.invokeStatic(Types.BYTE, BYT_VALUE_OF);

    adapter.visitInsn(Opcodes.ARETURN);

    adapter.endMethod();

    if (classRoot != null) {
        Resource classFile = classRoot.getRealResource(className + ".class");
        return store(cw.toByteArray(), classFile);
    }
    return cw.toByteArray();
}

---

From source file:lucee.transformer.bytecode.reflection.ASMProxyFactory.java

License:Open Source License

private static void loadClass(GeneratorAdapter adapter, Class<?> clazz) {
    if (void.class == clazz)
        adapter.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/Void", "TYPE", "Ljava/lang/Class;");

    // primitive types
    else if (int.class == clazz)
        adapter.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/Integer", "TYPE", "Ljava/lang/Class;");
    else if (long.class == clazz)
        adapter.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/Long", "TYPE", "Ljava/lang/Class;");
    else if (char.class == clazz)
        adapter.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/Character", "TYPE", "Ljava/lang/Class;");
    else if (byte.class == clazz)
        adapter.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/Byte", "TYPE", "Ljava/lang/Class;");
    else if (float.class == clazz)
        adapter.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/Float", "TYPE", "Ljava/lang/Class;");
    else if (double.class == clazz)
        adapter.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/Double", "TYPE", "Ljava/lang/Class;");
    else if (boolean.class == clazz)
        adapter.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/Boolean", "TYPE", "Ljava/lang/Class;");
    else if (short.class == clazz)
        adapter.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/Short", "TYPE", "Ljava/lang/Class;");

    // TODO ref types

    else {/*from  w  ww  .  j a v a 2 s. c  om*/
        adapter.visitVarInsn(Opcodes.ALOAD, 1);
        adapter.push(clazz.getName());
        adapter.invokeVirtual(Types.CLASS_LOADER, LOAD_CLASS);
    }
}

---

From source file:lucee.transformer.bytecode.util.ASMUtil.java

License:Open Source License

private static void createProperty(ClassWriter cw, String classType, ASMProperty property)
        throws PageException {
    String name = property.getName();
    Type type = property.getASMType();
    Class clazz = property.getClazz();

    cw.visitField(Opcodes.ACC_PRIVATE, name, type.toString(), null, null).visitEnd();

    int load = loadFor(type);
    //int sizeOf=sizeOf(type);

    // get<PropertyName>():<type>
    Type[] types = new Type[0];
    Method method = new Method((clazz == boolean.class ? "get" : "get") + StringUtil.ucFirst(name), type,
            types);/*from w w w  .j  av  a 2  s  . co m*/
    GeneratorAdapter adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, method, null, null, cw);

    Label start = new Label();
    adapter.visitLabel(start);

    adapter.visitVarInsn(Opcodes.ALOAD, 0);
    adapter.visitFieldInsn(Opcodes.GETFIELD, classType, name, type.toString());
    adapter.returnValue();

    Label end = new Label();
    adapter.visitLabel(end);
    adapter.visitLocalVariable("this", "L" + classType + ";", null, start, end, 0);
    adapter.visitEnd();

    adapter.endMethod();

    // set<PropertyName>(object):void
    types = new Type[] { type };
    method = new Method("set" + StringUtil.ucFirst(name), Types.VOID, types);
    adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, method, null, null, cw);

    start = new Label();
    adapter.visitLabel(start);
    adapter.visitVarInsn(Opcodes.ALOAD, 0);
    adapter.visitVarInsn(load, 1);
    adapter.visitFieldInsn(Opcodes.PUTFIELD, classType, name, type.toString());

    adapter.visitInsn(Opcodes.RETURN);
    end = new Label();
    adapter.visitLabel(end);
    adapter.visitLocalVariable("this", "L" + classType + ";", null, start, end, 0);
    adapter.visitLocalVariable(name, type.toString(), null, start, end, 1);
    //adapter.visitMaxs(0, 0);//.visitMaxs(sizeOf+1, sizeOf+1);// hansx
    adapter.visitEnd();

    adapter.endMethod();

}

---

From source file:lucee.transformer.bytecode.util.ASMUtil.java

License:Open Source License

public static int loadFor(Type type) {
    if (type.equals(Types.BOOLEAN_VALUE) || type.equals(Types.INT_VALUE) || type.equals(Types.CHAR)
            || type.equals(Types.SHORT_VALUE))
        return Opcodes.ILOAD;
    if (type.equals(Types.FLOAT_VALUE))
        return Opcodes.FLOAD;
    if (type.equals(Types.LONG_VALUE))
        return Opcodes.LLOAD;
    if (type.equals(Types.DOUBLE_VALUE))
        return Opcodes.DLOAD;
    return Opcodes.ALOAD;
}

---

From source file:lucee.transformer.bytecode.util.JavaProxyFactory.java

License:Open Source License

public static Object createProxy(PageContext pc, Component cfc, Class extendz, Class... interfaces)
        throws PageException, IOException {
    PageContextImpl pci = (PageContextImpl) pc;
    if (extendz == null)
        extendz = Object.class;
    if (interfaces == null)
        interfaces = new Class[0];
    else {/*from  w  ww  . j  a  v  a2s. c om*/
        for (int i = 0; i < interfaces.length; i++) {
            if (!interfaces[i].isInterface())
                throw new IOException(
                        "definition [" + interfaces[i].getName() + "] is a class and not a interface");
        }
    }

    Type typeExtends = Type.getType(extendz);
    Type[] typeInterfaces = ASMUtil.toTypes(interfaces);
    String[] strInterfaces = new String[typeInterfaces.length];
    for (int i = 0; i < strInterfaces.length; i++) {
        strInterfaces[i] = typeInterfaces[i].getInternalName();
    }

    String className = createClassName(extendz, interfaces);
    //Mapping mapping = cfc.getPageSource().getMapping();

    // get ClassLoader
    PhysicalClassLoader cl = null;
    try {
        cl = (PhysicalClassLoader) pci.getRPCClassLoader(false);// mapping.getConfig().getRPCClassLoader(false)
    } catch (IOException e) {
        throw Caster.toPageException(e);
    }
    Resource classFile = cl.getDirectory().getRealResource(className.concat(".class"));

    // check if already exists, if yes return
    if (classFile.exists()) {
        //Object obj=newInstance(cl,className,cfc);
        // if(obj!=null) return obj;
    }

    /*
    String classNameOriginal=component.getPageSource().getFullClassName();
     String realOriginal=classNameOriginal.replace('.','/');
    Resource classFileOriginal = mapping.getClassRootDirectory().getRealResource(realOriginal.concat(".class"));
    */
    ClassWriter cw = ASMUtil.getClassWriter();

    cw.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC, className, null, typeExtends.getInternalName(), strInterfaces);
    //BytecodeContext statConstr = null;//new BytecodeContext(null,null,null,cw,real,ga,Page.STATIC_CONSTRUCTOR);
    //BytecodeContext constr = null;//new BytecodeContext(null,null,null,cw,real,ga,Page.CONSTRUCTOR);

    // field Component
    FieldVisitor _fv = cw.visitField(Opcodes.ACC_PRIVATE, "cfc", COMPONENT_NAME, null, null);
    _fv.visitEnd();
    _fv = cw.visitField(Opcodes.ACC_PRIVATE, "config", CONFIG_WEB_NAME, null, null);
    _fv.visitEnd();

    // Constructor
    GeneratorAdapter adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC, CONSTRUCTOR, null, null, cw);
    Label begin = new Label();
    adapter.visitLabel(begin);
    adapter.loadThis();
    adapter.invokeConstructor(Types.OBJECT, SUPER_CONSTRUCTOR);

    //adapter.putField(JAVA_PROXY, arg1, arg2)

    adapter.visitVarInsn(Opcodes.ALOAD, 0);
    adapter.visitVarInsn(Opcodes.ALOAD, 1);
    adapter.visitFieldInsn(Opcodes.PUTFIELD, className, "config", CONFIG_WEB_NAME);

    adapter.visitVarInsn(Opcodes.ALOAD, 0);
    adapter.visitVarInsn(Opcodes.ALOAD, 2);
    adapter.visitFieldInsn(Opcodes.PUTFIELD, className, "cfc", COMPONENT_NAME);

    adapter.visitInsn(Opcodes.RETURN);
    Label end = new Label();
    adapter.visitLabel(end);
    adapter.visitLocalVariable("config", CONFIG_WEB_NAME, null, begin, end, 1);
    adapter.visitLocalVariable("cfc", COMPONENT_NAME, null, begin, end, 2);

    //adapter.returnValue();
    adapter.endMethod();

    // create methods
    Set<Class> cDone = new HashSet<Class>();
    Map<String, Class> mDone = new HashMap<String, Class>();
    for (int i = 0; i < interfaces.length; i++) {
        _createProxy(cw, cDone, mDone, cfc, interfaces[i], className);
    }
    cw.visitEnd();

    // create class file
    byte[] barr = cw.toByteArray();

    try {
        ResourceUtil.touch(classFile);
        IOUtil.copy(new ByteArrayInputStream(barr), classFile, true);

        cl = (PhysicalClassLoader) pci.getRPCClassLoader(true);
        Class<?> clazz = cl.loadClass(className, barr);
        return newInstance(clazz, pc.getConfig(), cfc);
    } catch (Throwable t) {
        throw Caster.toPageException(t);
    }
}

---

From source file:lucee.transformer.bytecode.util.JavaProxyFactory.java

License:Open Source License

private static void _createMethod(ClassWriter cw, Map<String, Class> mDone, Method src, String className)
        throws IOException {
    Class<?>[] classArgs = src.getParameterTypes();
    Class<?> classRtn = src.getReturnType();

    String str = src.getName() + "(" + Reflector.getDspMethods(classArgs) + ")";
    Class rtnClass = mDone.get(str);
    if (rtnClass != null) {
        if (rtnClass != classRtn)
            throw new IOException("there is a conflict with method [" + str
                    + "], this method is declared more than once with different return types.");
        return;/*from  w  ww.  java2  s .  c o  m*/
    }
    mDone.put(str, classRtn);

    Type[] typeArgs = ASMUtil.toTypes(classArgs);
    Type typeRtn = Type.getType(classRtn);

    org.objectweb.asm.commons.Method method = new org.objectweb.asm.commons.Method(src.getName(), typeRtn,
            typeArgs);
    GeneratorAdapter adapter = new GeneratorAdapter(Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL, method, null, null,
            cw);
    //BytecodeContext bc = new BytecodeContext(statConstr,constr,null,null,keys,cw,className,adapter,method,writeLog);
    Label start = adapter.newLabel();
    adapter.visitLabel(start);

    //JavaProxy.call(cfc,"add",new Object[]{arg0})
    // config
    adapter.visitVarInsn(Opcodes.ALOAD, 0);
    adapter.visitFieldInsn(Opcodes.GETFIELD, className, "config", CONFIG_WEB_NAME);

    // cfc
    adapter.visitVarInsn(Opcodes.ALOAD, 0);
    adapter.visitFieldInsn(Opcodes.GETFIELD, className, "cfc", COMPONENT_NAME);

    // name
    adapter.push(src.getName());

    // arguments
    ArrayVisitor av = new ArrayVisitor();
    av.visitBegin(adapter, Types.OBJECT, typeArgs.length);
    for (int y = 0; y < typeArgs.length; y++) {
        av.visitBeginItem(adapter, y);
        adapter.loadArg(y);
        if (classArgs[y] == boolean.class)
            adapter.invokeStatic(JAVA_PROXY, _BOOLEAN);
        else if (classArgs[y] == byte.class)
            adapter.invokeStatic(JAVA_PROXY, _BYTE);
        else if (classArgs[y] == char.class)
            adapter.invokeStatic(JAVA_PROXY, _CHAR);
        else if (classArgs[y] == double.class)
            adapter.invokeStatic(JAVA_PROXY, _DOUBLE);
        else if (classArgs[y] == float.class)
            adapter.invokeStatic(JAVA_PROXY, _FLOAT);
        else if (classArgs[y] == int.class)
            adapter.invokeStatic(JAVA_PROXY, _INT);
        else if (classArgs[y] == long.class)
            adapter.invokeStatic(JAVA_PROXY, _LONG);
        else if (classArgs[y] == short.class)
            adapter.invokeStatic(JAVA_PROXY, _SHORT);
        else {
            adapter.invokeStatic(JAVA_PROXY, _OBJECT);
        }

        av.visitEndItem(adapter);
    }
    av.visitEnd();
    adapter.invokeStatic(JAVA_PROXY, CALL);

    //JavaProxy.to...(...);
    int rtn = Opcodes.IRETURN;
    if (classRtn == boolean.class)
        adapter.invokeStatic(JAVA_PROXY, TO_BOOLEAN);
    else if (classRtn == byte.class)
        adapter.invokeStatic(JAVA_PROXY, TO_BYTE);
    else if (classRtn == char.class)
        adapter.invokeStatic(JAVA_PROXY, TO_CHAR);
    else if (classRtn == double.class) {
        rtn = Opcodes.DRETURN;
        adapter.invokeStatic(JAVA_PROXY, TO_DOUBLE);
    } else if (classRtn == float.class) {
        rtn = Opcodes.FRETURN;
        adapter.invokeStatic(JAVA_PROXY, TO_FLOAT);
    } else if (classRtn == int.class)
        adapter.invokeStatic(JAVA_PROXY, TO_INT);
    else if (classRtn == long.class) {
        rtn = Opcodes.LRETURN;
        adapter.invokeStatic(JAVA_PROXY, TO_LONG);
    } else if (classRtn == short.class)
        adapter.invokeStatic(JAVA_PROXY, TO_SHORT);
    else if (classRtn == void.class) {
        rtn = Opcodes.RETURN;
        adapter.pop();
    } else {
        rtn = Opcodes.ARETURN;
        adapter.checkCast(typeRtn);
    }

    /*mv = cw.visitMethod(ACC_PUBLIC, "add", "(Ljava/lang/Object;)Z", null, null);
    mv.visitCode();
    Label l0 = new Label();
    mv.visitLabel(l0);
    mv.visitLineNumber(20, l0);
    mv.visitVarInsn(ALOAD, 0);
    mv.visitFieldInsn(GETFIELD, "Test", "cfc", "Ljava/lang/Object;");
    mv.visitLdcInsn("add");
    mv.visitInsn(ICONST_1);
    mv.visitTypeInsn(ANEWARRAY, "java/lang/Object");
    mv.visitInsn(DUP);
    mv.visitInsn(ICONST_0);
    mv.visitVarInsn(ALOAD, 1);
    mv.visitInsn(AASTORE);
    mv.visitMethodInsn(INVOKESTATIC, "JavaProxy", "call", "(Ljava/lang/Object;Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/Object;");
    mv.visitMethodInsn(INVOKESTATIC, "JavaProxy", "toBoolean", "(Ljava/lang/Object;)Z");
    mv.visitInsn(IRETURN);
    Label l1 = new Label();
    mv.visitLabel(l1);
    mv.visitLocalVariable("this", "LTest;", null, l0, l1, 0);
    mv.visitLocalVariable("arg0", "Ljava/lang/Object;", null, l0, l1, 1);
    mv.visitMaxs(6, 2);
    mv.visitEnd();*/

    adapter.visitInsn(rtn);
    adapter.endMethod();

}

---

From source file:me.themallard.bitmmo.api.transformer.Transformer.java

License:Open Source License

protected final void createGetter(ClassNode cn, FieldNode fn, String name) {
    MethodVisitor mv = cn.visitMethod(Opcodes.ACC_PUBLIC, name, "()" + fn.desc, null, null);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, cn.name, fn.name, fn.desc);
    mv.visitInsn(Type.getType(fn.desc).getOpcode(Opcodes.IRETURN));
    mv.visitMaxs(0, 0);/*from   w w w.ja  v  a 2  s  .c  o m*/
    mv.visitEnd();
}

---

From source file:me.themallard.bitmmo.api.transformer.Transformer.java

License:Open Source License

protected final void createSetter(ClassNode cn, FieldNode fn, String name) {
    MethodVisitor mv = cn.visitMethod(Opcodes.ACC_PUBLIC, name, "(" + fn.desc + ")V", null, null);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitVarInsn(Type.getType(fn.desc).getOpcode(Opcodes.ILOAD), 1);
    mv.visitFieldInsn(Opcodes.PUTFIELD, cn.name, fn.name, fn.desc);
    mv.visitInsn(Opcodes.RETURN);/*w ww . j  ava2  s . com*/
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

---

From source file:me.themallard.bitmmo.impl.plugin.playerhook.PlayerPlugin.java

License:Open Source License

@Override
public void run(ClassNode cn) {
    MethodVisitor mv = cn.visitMethod(Opcodes.ACC_PUBLIC, "getPosition",
            "()" + "Lme/themallard/bitmmo/impl/plugin/position/IPosition;", null, null);
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.GETFIELD, "Entity", "position", "LPosition;");
    mv.visitInsn(//w  ww  .  j a  v a 2 s  .c  om
            Type.getType("Lme/themallard/bitmmo/impl/plugin/position/IPosition;").getOpcode(Opcodes.IRETURN));
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

---

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