Examples of org.apache.bcel.generic.INVOKEVIRTUAL

org.apache.bcel.generic.INVOKEVIRTUAL
INVOKEVIRTUAL - Invoke instance method; dispatch based on class
```
Stack: ..., objectref, [arg1, [arg2 ...]] -> ...
```
@version $Id: INVOKEVIRTUAL.java,v 1.1.1.1 2001/10/29 20:00:17 jvanzyl Exp $ @author M. Dahm

  }
  else {
      il.append(methodGen.loadContextNode());
      Type.Node.translateTo(classGen, methodGen, Type.String);
  }
  il.append(new INVOKEVIRTUAL(cpg.addMethodref(STRING_CLASS,
                 "length", "()I")));
    }

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        // Grab all the literal text in the stylesheet and put it in a char[]
        final int charDataCount = getXSLTC().getCharacterDataCount();
        final int toCharArray = cpg.addMethodref(STRING, "toCharArray", "()[C");
        for (int i = 0; i < charDataCount; i++) {
            il.append(new PUSH(cpg, getXSLTC().getCharacterData(i)));
            il.append(new INVOKEVIRTUAL(toCharArray));
            il.append(new PUTSTATIC(cpg.addFieldref(_className,
                                               STATIC_CHAR_DATA_FIELD+i,
                                               STATIC_CHAR_DATA_FIELD_SIG)));
        }

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      il.append(DUP);
  }
  
  il.append(classGen.loadTranslet());
  il.append(transf.loadDOM());
  il.append(new INVOKEVIRTUAL(cpg.addMethodref(TRANSLET_CLASS,
                 "makeDOMAdapter",
                 "("+DOM_INTF_SIG+")"+
                 DOM_ADAPTER_SIG)));
  // DOMAdapter is on the stack


  if (isMultiDocument()) {
      final int init = cpg.addMethodref(MULTI_DOM_CLASS,
                "<init>",
                "("+DOM_INTF_SIG+")V");
      il.append(new INVOKESPECIAL(init));
      // MultiDOM is on the stack
  }
  
  //store to _dom variable
  il.append(new PUTFIELD(domField));


  // continue with globals initialization
  il.append(new PUSH(cpg, DTM.ROOT_NODE));
  il.append(new ISTORE(current.getIndex()));


  // Transfer the output settings to the output post-processor
  il.append(classGen.loadTranslet());
  il.append(transf.loadHandler());
  final int index = cpg.addMethodref(TRANSLET_CLASS,
             "transferOutputSettings",
             "("+OUTPUT_HANDLER_SIG+")V");
  il.append(new INVOKEVIRTUAL(index));


        // Compile buildKeys -- TODO: omit if not needed                
        
        final String keySig = compileBuildKeys(classGen);
        final int    keyIdx = cpg.addMethodref(getClassName(),
                                               "buildKeys", keySig);
        il.append(classGen.loadTranslet());     // The 'this' pointer
        il.append(classGen.loadTranslet());
        il.append(new GETFIELD(domField));      // The DOM reference
        il.append(transf.loadIterator());       // Not really used, but...
        il.append(transf.loadHandler());        // The output handler
        il.append(new PUSH(cpg, DTM.ROOT_NODE)); // Start with the root node
        il.append(new INVOKEVIRTUAL(keyIdx));




    // Look for top-level elements that need handling
  final Enumeration toplevel = elements();
  if ((_globals.size() > 0) || (toplevel.hasMoreElements())) {
      // Compile method for handling top-level elements
      final String topLevelSig = compileTopLevel(classGen, toplevel);
      // Get a reference to that method
      final int topLevelIdx = cpg.addMethodref(getClassName(),
                 "topLevel",
                 topLevelSig);
      // Push all parameters on the stack and call topLevel()
      il.append(classGen.loadTranslet()); // The 'this' pointer
      il.append(classGen.loadTranslet());
      il.append(new GETFIELD(domField));  // The DOM reference
      il.append(transf.loadIterator());
      il.append(transf.loadHandler());    // The output handler
      il.append(new INVOKEVIRTUAL(topLevelIdx));
  }
  






  // start document
  il.append(transf.loadHandler());
  il.append(transf.startDocument());


  // push first arg for applyTemplates
  il.append(classGen.loadTranslet());
  // push translet for GETFIELD to get DOM arg
  il.append(classGen.loadTranslet());
  il.append(new GETFIELD(domField));
  // push remaining 2 args
  il.append(transf.loadIterator());
  il.append(transf.loadHandler());
  il.append(new INVOKEVIRTUAL(applyTemplates));
  // endDocument
  il.append(transf.loadHandler());
  il.append(transf.endDocument());


  il.append(RETURN);

View Full Code Here

      if (rule.getStrength() == RULE_NAMESPACE) {
    il.append(new ALOAD(paramDom));
    il.append(new ILOAD(paramCurrent));
    il.append(new INVOKEINTERFACE(gns,2));
    il.append(new PUSH(cpg, rule.getNamespace()));
    il.append(new INVOKEVIRTUAL(strcmp));
    il.append(ICONST_0);


    if (rule.getAction() == STRIP_SPACE) {
        strip[sCount++] = il.append(new IF_ICMPEQ(null));
    }

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  // Add the various iterators to the UnionIterator
  final int length = _components.length;
  for (int i = 0; i < length; i++) {
      _components[i].translate(classGen, methodGen);
      il.append(new INVOKEVIRTUAL(iter));
  }


  // Order the iterator only if strictly needed
  if (_reverse) {
      final int order = cpg.addInterfaceMethodref(DOM_INTF,

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      final ConstantPoolGen cpg = classGen.getConstantPool();
      final InstructionList il = methodGen.getInstructionList();
      final int initBuffer = cpg.addMethodref(STRING_BUFFER_CLASS,
                "<init>", "()V");
      final Instruction append =
    new INVOKEVIRTUAL(cpg.addMethodref(STRING_BUFFER_CLASS,
               "append",
               "(" + STRING_SIG + ")"
               + STRING_BUFFER_SIG));
      
      final int toString = cpg.addMethodref(STRING_BUFFER_CLASS,
              "toString",
              "()"+STRING_SIG);
      il.append(new NEW(cpg.addClass(STRING_BUFFER_CLASS)));
      il.append(DUP);
      il.append(new INVOKESPECIAL(initBuffer));
      // StringBuffer is on the stack
      final Enumeration elements = elements();
      while (elements.hasMoreElements()) {
    final Expression exp = (Expression)elements.nextElement();
    exp.translate(classGen, methodGen);
    il.append(append);
      }
      il.append(new INVOKEVIRTUAL(toString));
  }
    }

View Full Code Here

    public void translateUnBox(ClassGenerator classGen,
             MethodGenerator methodGen) {
  final ConstantPoolGen cpg = classGen.getConstantPool();
  final InstructionList il = methodGen.getInstructionList();
  il.append(new CHECKCAST(cpg.addClass(BOOLEAN_CLASS)));
  il.append(new INVOKEVIRTUAL(cpg.addMethodref(BOOLEAN_CLASS,
                 BOOLEAN_VALUE, 
                 BOOLEAN_VALUE_SIG)));
    }

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      il.append(new ASTORE(handler.getIndex()));


      // Call the method that implements this result tree
      index = cpg.addMethodref(className, _methodName,
             "("+DOM_INTF_SIG+TRANSLET_OUTPUT_SIG+")V");
      il.append(new INVOKEVIRTUAL(index));
      
      // Restore new handler and call getValue()
      il.append(new ALOAD(handler.getIndex()));
      index = cpg.addMethodref(STRING_VALUE_HANDLER,
             "getValue",
             "()" + STRING_SIG);
      il.append(new INVOKEVIRTUAL(index));
  }
    }

View Full Code Here

             _methodName,
             "("
             + DOM_INTF_SIG
             + TRANSLET_OUTPUT_SIG
             +")V");
      il.append(new INVOKEVIRTUAL(index));


      // Call endDocument on the DOM handler
      il.append(new ALOAD(domBuilder.getIndex()));
      index = cpg.addInterfaceMethodref(TRANSLET_OUTPUT_INTERFACE, 
                "endDocument", "()V");

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  if ((tmp == null) || (tmp.equals(EMPTYSTRING))) {
      int nan = cpg.addMethodref(DFS_CLASS,
               "setNaN", "(Ljava/lang/String;)V");
      il.append(DUP);
      il.append(new PUSH(cpg, "NaN"));
      il.append(new INVOKEVIRTUAL(nan));
  }


  tmp = getAttribute("infinity");
  if ((tmp == null) || (tmp.equals(EMPTYSTRING))) {
      int inf = cpg.addMethodref(DFS_CLASS,
               "setInfinity",
               "(Ljava/lang/String;)V");
      il.append(DUP);
      il.append(new PUSH(cpg, "Infinity"));
      il.append(new INVOKEVIRTUAL(inf));
  }
      
  final int nAttributes = _attributes.getLength();
  for (int i = 0; i < nAttributes; i++) {
      final String name = _attributes.getQName(i);
      final String value = _attributes.getValue(i);


      boolean valid = true;
      int method = 0;


      if (name.equals("decimal-separator")) {
    // DecimalFormatSymbols.setDecimalSeparator();
    method = cpg.addMethodref(DFS_CLASS,
            "setDecimalSeparator", "(C)V");
      }
      else if (name.equals("grouping-separator")) {
    method =  cpg.addMethodref(DFS_CLASS,
             "setGroupingSeparator", "(C)V");
      }
      else if (name.equals("minus-sign")) {
    method = cpg.addMethodref(DFS_CLASS,
            "setMinusSign", "(C)V");
      }
      else if (name.equals("percent")) {
    method = cpg.addMethodref(DFS_CLASS,
            "setPercent", "(C)V");
      }
      else if (name.equals("per-mille")) {
    method = cpg.addMethodref(DFS_CLASS,
            "setPerMill", "(C)V");
      }
      else if (name.equals("zero-digit")) {
    method = cpg.addMethodref(DFS_CLASS,
            "setZeroDigit", "(C)V");
      }
      else if (name.equals("digit")) {
    method = cpg.addMethodref(DFS_CLASS,
            "setDigit", "(C)V");
      }
      else if (name.equals("pattern-separator")) {
    method = cpg.addMethodref(DFS_CLASS,
            "setPatternSeparator", "(C)V");
      }
      else if (name.equals("NaN")) {
    method = cpg.addMethodref(DFS_CLASS,
            "setNaN", "(Ljava/lang/String;)V");
          il.append(DUP);
    il.append(new PUSH(cpg, value));
    il.append(new INVOKEVIRTUAL(method));
    valid = false;
      }
      else if (name.equals("infinity")) {
    method = cpg.addMethodref(DFS_CLASS,
            "setInfinity",
            "(Ljava/lang/String;)V");
          il.append(DUP);
    il.append(new PUSH(cpg, value));
    il.append(new INVOKEVIRTUAL(method));
    valid = false;
      }
      else {
    valid = false;
      }


      if (valid) {
    il.append(DUP);
    il.append(new PUSH(cpg, value.charAt(0)));
    il.append(new INVOKEVIRTUAL(method));
      }


  }


  final int put = cpg.addMethodref(TRANSLET_CLASS,
           "addDecimalFormat",
           "("+STRING_SIG+DFS_SIG+")V");
  il.append(new INVOKEVIRTUAL(put));
    }

View Full Code Here

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