Examples of org.apache.derby.iapi.services.classfile.ClassFormatOutput

Package org.apache.derby.iapi.services.classfile

Examples of org.apache.derby.iapi.services.classfile.ClassFormatOutput

org.apache.derby.iapi.services.classfile.ClassFormatOutput
A wrapper around DataOutputStream to provide input functions in terms of the types defined on pages 83. For this types use these methods of DataOutputStream
- float - writeFloat
- long - writeLong
- double - writeDouble
- UTF/String - writeUTF
- U1Array - write(byte[])

    try {


      if (SanityManager.DEBUG) {
        if (SanityManager.DEBUG_ON("ClassLineNumbers")) {


          ClassFormatOutput sout = new ClassFormatOutput(2);


          int cpiUTF = classHold.addUtf8("GC.java");


          sout.putU2(cpiUTF);


          classHold.addAttribute("SourceFile", sout);
        }
      }

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     */
    final BCClass       cb;


  CodeChunk(BCClass cb) {
        this.cb = cb;
        cout = new ClassFormatOutput();
    try {
      cout.putU2(0); // max_stack, placeholder for now
      cout.putU2(0); // max_locals, placeholder for now
      cout.putU4(0); // code_length, placeholder 4 now
    } catch (IOException ioe) {

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      aos.setLimit(byteCount);
    } catch (IOException e) {
            limitHit(e);
    }
    
    cout = new ClassFormatOutput(aos);
    pcDelta = pc;
  }

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  void complete(BCMethod mb, ClassHolder ch,
      ClassMember method, int maxStack, int maxLocals) {


        int codeLength =  getPC();


    ClassFormatOutput out = cout;
    
    try {


      out.putU2(0); // exception_table_length


      if (SanityManager.DEBUG) {
        if (SanityManager.DEBUG_ON("ClassLineNumbers")) {
        // Add a single attribute - LineNumberTable
        // This add fake line numbers that are the pc offset in the method.
        out.putU2(1); // attributes_count


        int cpiUTF = ch.addUtf8("LineNumberTable");


        out.putU2(cpiUTF);
        out.putU4((codeLength * 4) + 2);
        out.putU2(codeLength);
        for (int i = 0; i < codeLength; i++) {
          out.putU2(i);
          out.putU2(i);
        }
        } else {
          out.putU2(0); // attributes_count
        }


      } else {
        out.putU2(0); // attributes_count
        // attributes is empty, a 0-element array.
      }
    } catch (IOException ioe) {
            limitHit(ioe);
    }

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    try {


      if (SanityManager.DEBUG) {
        if (SanityManager.DEBUG_ON("ClassLineNumbers")) {


          ClassFormatOutput sout = new ClassFormatOutput(2);


          int cpiUTF = classHold.addUtf8("GC.java");


          sout.putU2(cpiUTF);


          classHold.addAttribute("SourceFile", sout);
        }
      }

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    // don't write an Exceptions attribute if there are no exceptions.
    if (numExc != 0) {


      try{
        ClassFormatOutput eout = new ClassFormatOutput((numExc * 2) + 2);


        eout.putU2(numExc); // number_of_exceptions


        for (int i = 0; i < numExc; i++) {
          // put each exception into the constant pool
          String e = thrownExceptions.get(i).toString();
          int ei2 = modClass.addClassReference(e);


          // add constant pool index to exception attribute_info
          eout.putU2(ei2);
        }


        myEntry.addAttribute("Exceptions", eout);


      } catch (IOException ioe) {

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    // don't write an Exceptions attribute if there are no exceptions.
    if (numExc != 0) {


      try{
        ClassFormatOutput eout = new ClassFormatOutput((numExc * 2) + 2);


        eout.putU2(numExc); // number_of_exceptions


        for (int i = 0; i < numExc; i++) {
          // put each exception into the constant pool
          String e = thrownExceptions.elementAt(i).toString();
          int ei2 = modClass.addClassReference(e);


          // add constant pool index to exception attribute_info
          eout.putU2(ei2);
        }


        myEntry.addAttribute("Exceptions", eout);


      } catch (IOException ioe) {

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    // don't write an Exceptions attribute if there are no exceptions.
    if (numExc != 0) {


      try{
        ClassFormatOutput eout = new ClassFormatOutput((numExc * 2) + 2);


        eout.putU2(numExc); // number_of_exceptions


        for (int i = 0; i < numExc; i++) {
          // put each exception into the constant pool
          String e = thrownExceptions.get(i).toString();
          int ei2 = modClass.addClassReference(e);


          // add constant pool index to exception attribute_info
          eout.putU2(ei2);
        }


        myEntry.addAttribute("Exceptions", eout);


      } catch (IOException ioe) {

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    try {


      if (SanityManager.DEBUG) {
        if (SanityManager.DEBUG_ON("ClassLineNumbers")) {


          ClassFormatOutput sout = new ClassFormatOutput(2);


          int cpiUTF = classHold.addUtf8("GC.java");


          sout.putU2(cpiUTF);


          classHold.addAttribute("SourceFile", sout);
        }
      }

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    // don't write an Exceptions attribute if there are no exceptions.
    if (numExc != 0) {


      try{
        ClassFormatOutput eout = new ClassFormatOutput((numExc * 2) + 2);


        eout.putU2(numExc); // number_of_exceptions


        for (int i = 0; i < numExc; i++) {
          // put each exception into the constant pool
          String e = thrownExceptions.elementAt(i).toString();
          int ei2 = modClass.addClassReference(e);


          // add constant pool index to exception attribute_info
          eout.putU2(ei2);
        }


        myEntry.addAttribute("Exceptions", eout);


      } catch (IOException ioe) {

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Related Classes of org.apache.derby.iapi.services.classfile.ClassFormatOutput

org.apache.derby.iapi.services.io.AccessibleByteArrayOutputStream

org.apache.derby.impl.services.bytecode.BCClass

org.apache.derby.impl.services.bytecode.BCMethod

org.apache.derby.impl.services.bytecode.CodeChunk

java.io.IOException

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