Example usage for org.objectweb.asm Opcodes RETURN

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

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

Prototype

int RETURN

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Usage

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

License:Open Source License

private void addConstructor(ClassVisitor cv) {
    MethodVisitor mv = cv.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
    mv.visitCode();/*from   ww  w.  ja va  2s. c o  m*/
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, objectInternalName, "<init>", "()V");
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
}

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

License:Open Source License

private void addNonStaticMethods(CompilerContext context, ClassVisitor cv) {
    MethodVisitor mv;/*from  w w  w. ja v  a2s.co  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 endSequenceMethod() {
    flushInstructionCount(false, true);
    mv.visitInsn(Opcodes.RETURN);
}

From source file:lapin.comp.asm.ASMByteCodeGenerator.java

License:Open Source License

private void generateClassInitializer(Env env) {
    MethodVisitor mv = _cw.visitMethod(Opcodes.ACC_STATIC, "<clinit>", "()V", null, null);

    // field for SELF (static field)
    mv.visitCode();//  w w w .ja v  a2 s  . c  om
    mv.visitInsn(Opcodes.ACONST_NULL);
    mv.visitFieldInsn(Opcodes.PUTSTATIC, toInternalName(super.classInfo.classname()), "SELF",
            toTypeDescriptor(super.classInfo.classname()));
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:lapin.comp.asm.ASMByteCodeGenerator.java

License:Open Source License

private void generateConstructor(Env env) {
    /*/*from   w  w  w .  ja  v  a  2s . c  o  m*/
     * local variables (reserved)
     * 0: this
     * 1: env
     */
    MethodVisitor mv = _cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>",
            //"(Llapin/lang/Env;)V",
            Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { TYPE_ENV }), null, null);

    mv.visitCode();
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitLdcInsn(super.classInfo.name().pname());
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "lapin/function/CompiledExpr", "<init>",
            //"(Ljava/lang/String;)V");
            Type.getMethodDescriptor(Type.VOID_TYPE, new Type[] { TYPE_STRING }));

    Iterator it;

    // fields for constants
    it = constTable.keySet().iterator();
    while (it.hasNext()) {
        Object key = it.next(); // key: object (const)
        String val = Data.string(constTable.get(key));
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitLdcInsn(Printer.prin1ToString(key, env));
        mv.visitVarInsn(Opcodes.ALOAD, 1);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "lapin/function/CompiledExpr", "toSexp",
                Type.getMethodDescriptor(TYPE_OBJECT, new Type[] { TYPE_STRING, TYPE_ENV }));
        mv.visitFieldInsn(Opcodes.PUTFIELD, toInternalName(super.classInfo.classname()), val,
                TYPE_OBJECT.getDescriptor());
    }

    // fields for vars
    it = varTable.keySet().iterator();
    while (it.hasNext()) {
        Object key = it.next(); // key: symbol (var)
        String val = Data.string(varTable.get(key));
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitLdcInsn(Printer.prin1ToString(key, env));
        mv.visitVarInsn(Opcodes.ALOAD, 1);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "lapin/function/CompiledExpr", "toSexp",
                Type.getMethodDescriptor(TYPE_OBJECT, new Type[] { TYPE_STRING, TYPE_ENV }));
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "lapin/lang/Data", "symbol",
                Type.getMethodDescriptor(TYPE_SYMBOL, new Type[] { TYPE_OBJECT }));
        mv.visitFieldInsn(Opcodes.PUTFIELD, toInternalName(super.classInfo.classname()), val,
                TYPE_SYMBOL.getDescriptor());
    }

    // fields for lambdaLists
    it = llTable.keySet().iterator();
    while (it.hasNext()) {
        Object key = it.next(); // key: lambdaList
        String val = Data.string(llTable.get(key));
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitVarInsn(Opcodes.ALOAD, 0);
        mv.visitLdcInsn(Printer.prin1ToString(Data.lambdaList(key).params(), env));
        mv.visitVarInsn(Opcodes.ALOAD, 1);
        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "lapin/function/CompiledExpr", "toLambdaList",
                Type.getMethodDescriptor(TYPE_LAMBDA_LIST, new Type[] { TYPE_STRING, TYPE_ENV }));
        mv.visitFieldInsn(Opcodes.PUTFIELD, toInternalName(super.classInfo.classname()), val,
                TYPE_LAMBDA_LIST.getDescriptor());
    }

    // field for SELF (static field)
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitFieldInsn(Opcodes.PUTSTATIC, toInternalName(super.classInfo.classname()), "SELF",
            toTypeDescriptor(super.classInfo.classname()));
    mv.visitInsn(Opcodes.RETURN);

    mv.visitMaxs(0, 0);
    mv.visitEnd();
}

From source file:lombok.patcher.MethodLogistics.java

License:Open Source License

private static int returnOpcodeFor(String returnSpec) {
    switch (returnSpec.charAt(0)) {
    case 'D':
        return Opcodes.DRETURN;
    case 'J':
        return Opcodes.LRETURN;
    case 'F':
        return Opcodes.FRETURN;
    case 'I':
    case 'S':
    case 'B':
    case 'Z':
        return Opcodes.IRETURN;
    case 'V':
        return Opcodes.RETURN;
    case 'L':
    case '[':
        return Opcodes.ARETURN;
    }//from   w  ww.  j  a  v a2 s .co  m

    throw new IllegalStateException("Uhoh - bug - unrecognized JVM type: " + returnSpec);
}

From source file:lombok.patcher.scripts.ExitFromMethodEarlyScript.java

License:Open Source License

@Override
protected MethodPatcher createPatcher(ClassWriter writer, final String classSpec,
        TransplantMapper transplantMapper) {
    MethodPatcher patcher = new MethodPatcher(writer, transplantMapper, new MethodPatcherFactory() {
        public MethodVisitor createMethodVisitor(String name, String desc, MethodVisitor parent,
                MethodLogistics logistics) {
            if (valueWrapper == null && !insertCallOnly && logistics.getReturnOpcode() != Opcodes.RETURN) {
                throw new IllegalStateException("method " + name + desc + " must return something, but "
                        + "you did not provide a value hook method.");
            }/*from   ww  w.ja v  a 2  s. c  o m*/
            return new ExitEarly(parent, logistics, classSpec);
        }
    });

    if (transplant) {
        patcher.addTransplant(decisionWrapper);
        if (valueWrapper != null)
            patcher.addTransplant(valueWrapper);
    }
    return patcher;
}

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);/* w w w .ja  v a2 s. co  m*/
    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.statement.Return.java

License:Open Source License

public void _writeOut(BytecodeContext bc) throws BytecodeException {
    GeneratorAdapter adapter = bc.getAdapter();

    if (expr == null)
        ASMConstants.NULL(adapter);/* w  ww  .  j  a  v a2s  .  c  o m*/
    else
        expr.writeOut(bc, Expression.MODE_REF);

    // call finallies
    Stack<OnFinally> finallies = bc.getOnFinallyStack();
    int len = finallies.size();
    OnFinally onFinally;
    if (len > 0) {
        int rtn = adapter.newLocal(Types.OBJECT);
        adapter.storeLocal(rtn, Types.OBJECT);
        for (int i = len - 1; i >= 0; i--) {
            onFinally = finallies.get(i);
            if (!bc.insideFinally(onFinally))
                onFinally.writeOut(bc);
        }
        adapter.loadLocal(rtn, Types.OBJECT);
    }

    if (bc.getMethod().getReturnType().equals(Types.VOID)) {
        adapter.pop();
        adapter.visitInsn(Opcodes.RETURN);
    } else
        adapter.visitInsn(Opcodes.ARETURN);
}

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);//ww  w . jav  a  2 s .  c  om
    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();

}