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

org.objectweb.asm.CodeVisitor.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.

          (access & (ACC_STATIC + ACC_NATIVE + ACC_ABSTRACT)) == 0)
      {
        cv.visitVarInsn(ALOAD, 0);
        cv.visitVarInsn(ALOAD, 0);
        cv.visitFieldInsn(GETFIELD, owner, "_counter", "I");
        cv.visitInsn(ICONST_1);
        cv.visitInsn(IADD);
        cv.visitFieldInsn(PUTFIELD, owner, "_counter", "I");
        return new CounterCodeAdapter(cv);
      }
      return cv;

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      {
        cv.visitVarInsn(ALOAD, 0);
        cv.visitVarInsn(ALOAD, 0);
        cv.visitFieldInsn(GETFIELD, owner, "_counter", "I");
        cv.visitInsn(ICONST_1);
        cv.visitInsn(IADD);
        cv.visitFieldInsn(PUTFIELD, owner, "_counter", "I");
        return new CounterCodeAdapter(cv);
      }
      return cv;
    }

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      gv.visitLdcInsn("_get" + name + " called");
      gv.visitMethodInsn(INVOKEVIRTUAL,
        "java/io/PrintStream", "println", "(Ljava/lang/String;)V");
      gv.visitVarInsn(ALOAD, 0);
      gv.visitFieldInsn(GETFIELD, owner, name, desc);
      gv.visitInsn(t.getOpcode(IRETURN));
      gv.visitMaxs(1 + size, 1);


      // generates setter method
      String sDesc = "(" + desc + ")V";
      CodeVisitor sv =

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      sv.visitMethodInsn(INVOKEVIRTUAL,
        "java/io/PrintStream", "println", "(Ljava/lang/String;)V");
      sv.visitVarInsn(ALOAD, 0);
      sv.visitIntInsn(t.getOpcode(ILOAD), 1);
      sv.visitFieldInsn(PUTFIELD, owner, name, desc);
      sv.visitInsn(RETURN);
      sv.visitMaxs(1 + size, 1 + size);
    }
  }


  public CodeVisitor visitMethod (

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    CodeVisitor mw = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
    mw.visitVarInsn(ALOAD, 0);
    mw.visitMethodInsn(
      INVOKESPECIAL,
      "java/lang/Object", "<init>", "()V");
    mw.visitInsn(RETURN);
    mw.visitMaxs(1, 1);


    // eval method
    mw = cw.visitMethod(ACC_PUBLIC, "eval", "(II)I", null, null);
    compile(mw);

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    mw.visitMaxs(1, 1);


    // eval method
    mw = cw.visitMethod(ACC_PUBLIC, "eval", "(II)I", null, null);
    compile(mw);
    mw.visitInsn(IRETURN);
    // max stack and max locals automatically computed
    mw.visitMaxs(0, 0);


    return cw.toByteArray();
  }

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        // break;
          mv.visitJumpInsn(GOTO, switchEndLabel);
      }
      mv.visitLabel(switchEndLabel);
      // }
        mv.visitInsn(RETURN);
        mv.visitMaxs(0, 0);
      
      if (listenclass != null) {
        // ADD THE DEFINITION OF THE LISTENER CLASS VARIABLE
            gc.cv.visitField(ACC_PUBLIC + ACC_FINAL,

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        //public boolean hasInstanceLifeCycleListeners() {
        mv = gc.cv.visitMethod(ACC_PUBLIC, "hasInstanceLifeCycleListeners", 
                "()Z", null, null);
        //return true;
        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        //}

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        //public boolean hasInstanceLifeCycleListeners() {
        mv = gc.cv.visitMethod(ACC_PUBLIC, "hasInstanceLifeCycleListeners", 
                "()Z", null, null);
        //return true;
        mv.visitInsn(ICONST_1);
        mv.visitInsn(IRETURN);
        mv.visitMaxs(0, 0);
        //}
        


    }

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      String listenclass = (String) gc.ctx.get("listenClass");
      if (listenclass != null) {
          //this.eventListener = new MyListener() 
            mv.visitVarInsn(ALOAD, 0);
            mv.visitTypeInsn(NEW, getJVMClassName(listenclass));
            mv.visitInsn(DUP);
            mv.visitMethodInsn(INVOKESPECIAL, getJVMClassName(listenclass), 
                "<init>", "()V");
            mv.visitFieldInsn(PUTFIELD, gc.xHomeJCN, LISTENER_FIELD, 
              getJVMType(listenclass));
      }

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