Examples of org.objectweb.asm.MethodVisitor.visitInsn()

org.objectweb.asm.MethodVisitor.visitInsn()
Visits a zero operand instruction. @param opcode the opcode of the instruction to be visited. This opcode iseither NOP, ACONST_NULL, ICONST_M1, ICONST_0, ICONST_1, ICONST_2, ICONST_3, ICONST_4, ICONST_5, LCONST_0, LCONST_1, FCONST_0, FCONST_1, FCONST_2, DCONST_0, DCONST_1, IALOAD, LALOAD, FALOAD, DALOAD, AALOAD, BALOAD, CALOAD, SALOAD, IASTORE, LASTORE, FASTORE, DASTORE, AASTORE, BASTORE, CASTORE, SASTORE, POP, POP2, DUP, DUP_X1, DUP_X2, DUP2, DUP2_X1, DUP2_X2, SWAP, IADD, LADD, FADD, DADD, ISUB, LSUB, FSUB, DSUB, IMUL, LMUL, FMUL, DMUL, IDIV, LDIV, FDIV, DDIV, IREM, LREM, FREM, DREM, INEG, LNEG, FNEG, DNEG, ISHL, LSHL, ISHR, LSHR, IUSHR, LUSHR, IAND, LAND, IOR, LOR, IXOR, LXOR, I2L, I2F, I2D, L2I, L2F, L2D, F2I, F2L, F2D, D2I, D2L, D2F, I2B, I2C, I2S, LCMP, FCMPL, FCMPG, DCMPL, DCMPG, IRETURN, LRETURN, FRETURN, DRETURN, ARETURN, RETURN, ARRAYLENGTH, ATHROW, MONITORENTER, or MONITOREXIT.


        statement.getExpression().visit(controller.getAcg());


        // we should infer the type of the exception from the expression
        mv.visitTypeInsn(CHECKCAST, "java/lang/Throwable");
        mv.visitInsn(ATHROW);
        
        controller.getOperandStack().remove(1);
    }


    public void writeReturn(ReturnStatement statement) {

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            if (!(statement.isReturningNullOrVoid())) {
                //TODO: move to Verifier
                controller.getAcg().throwException("Cannot use return statement with an expression on a method that returns void");
            }
            controller.getCompileStack().applyBlockRecorder();
            mv.visitInsn(RETURN);
            return;
        }


        Expression expression = statement.getExpression();
        expression.visit(controller.getAcg());

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        String desc = BytecodeHelper.getMethodDescriptor(target.getReturnType(), target.getParameters());
        mv.visitMethodInsn(opcode, owner, methodName, desc);
        ClassNode ret = target.getReturnType().redirect();
        if (ret==ClassHelper.VOID_TYPE) {
            ret = ClassHelper.OBJECT_TYPE;
            mv.visitInsn(ACONST_NULL);
        }
        argumentsToRemove += args.getExpressions().size();
        controller.getOperandStack().remove(argumentsToRemove);
        controller.getOperandStack().push(ret);
        return true;

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        for (int i = 0; i < size; i++) {
            if (useArray) {
                // unpack argument from Object[]
                mv.visitVarInsn(Opcodes.ALOAD, 2);
                BytecodeHelper.pushConstant(mv, i);
                mv.visitInsn(Opcodes.AALOAD);
            } else {
                mv.visitVarInsn(Opcodes.ALOAD, i+2);
            }


            // cast argument to parameter class, inclusive unboxing

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        mv.visitMethodInsn(invokeMethodCode, type, cachedMethod.getName(), descriptor);


        // produce result
        BytecodeHelper.box(mv, cachedMethod.getReturnType());
        if (cachedMethod.getReturnType() == void.class) {
            mv.visitInsn(Opcodes.ACONST_NULL);
        }


        // return
        mv.visitInsn(Opcodes.ARETURN);

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        if (cachedMethod.getReturnType() == void.class) {
            mv.visitInsn(Opcodes.ACONST_NULL);
        }


        // return
        mv.visitInsn(Opcodes.ARETURN);
        
        // fall back after method change
        mv.visitLabel(l0);
        for (int i = 0; i < argumentCount; ++i) mv.visitVarInsn(Opcodes.ALOAD, i);
        if (!useArray) {

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        for (int i = 0; i < argumentCount; ++i) mv.visitVarInsn(Opcodes.ALOAD, i);
        if (!useArray) {
            mv.visitMethodInsn(Opcodes.INVOKESTATIC, "org/codehaus/groovy/runtime/ArrayUtil", "createArray", "(" + parameterDescription + ")[Ljava/lang/Object;");
        }
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "org/codehaus/groovy/runtime/callsite/CallSiteArray", "defaultCall" + name, "(Lorg/codehaus/groovy/runtime/callsite/CallSite;L" + receiverType + ";[Ljava/lang/Object;)Ljava/lang/Object;");
        mv.visitInsn(Opcodes.ARETURN);
        
        // exception unwrapping for stackless exceptions
        final Label tryEnd = new Label();
        mv.visitLabel(tryEnd);
        final Label catchStart = new Label();

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        final Label tryEnd = new Label();
        mv.visitLabel(tryEnd);
        final Label catchStart = new Label();
        mv.visitLabel(catchStart);
        mv.visitMethodInsn(Opcodes.INVOKESTATIC, "org/codehaus/groovy/runtime/ScriptBytecodeAdapter", "unwrap", "(Lgroovy/lang/GroovyRuntimeException;)Ljava/lang/Throwable;");
        mv.visitInsn(Opcodes.ATHROW);        
        mv.visitTryCatchBlock(tryStart, tryEnd, catchStart, GRE);
        
        mv.visitMaxs(0, 0);
        mv.visitEnd();
        return mv;

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        mv.visitMethodInsn(Opcodes.INVOKESPECIAL, superClass, "<init>", "(Lorg/codehaus/groovy/runtime/callsite/CallSite;Lgroovy/lang/MetaClassImpl;Lgroovy/lang/MetaMethod;[Ljava/lang/Class;)V");


        mv.visitVarInsn(Opcodes.ALOAD, 5);
        mv.visitFieldInsn(Opcodes.PUTSTATIC, internalName, "__constructor__", "Ljava/lang/reflect/Constructor;");


        mv.visitInsn(Opcodes.RETURN);
        mv.visitMaxs(0, 0);
        mv.visitEnd();
    }


    public static byte[] genPogoMetaMethodSite(CachedMethod cachedMethod, ClassWriter cw, String name) {

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  public void test() {
    TraceMethodVisitor tmv = new TraceMethodVisitor(null);
    MethodVisitor mv = new RemoveAddZeroAdapter(tmv);
    mv.visitCode();
    mv.visitVarInsn(ILOAD, 1);
    mv.visitInsn(ICONST_0);
    mv.visitInsn(IADD);
    mv.visitInsn(IRETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();
    checkMethod(tmv);

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