Exemplo n.º 1
0
  /**
   * Creates the default, nameless, DecimalFormat object in AbstractTranslet's format_symbols
   * hashtable. This should be called for every stylesheet, and the entry may be overridden by later
   * nameless xsl:decimal-format instructions.
   */
  public static void translateDefaultDFS(ClassGenerator classGen, MethodGenerator methodGen) {

    ConstantPoolGen cpg = classGen.getConstantPool();
    InstructionList il = methodGen.getInstructionList();
    final int init = cpg.addMethodref(DFS_CLASS, "<init>", "(" + LOCALE_SIG + ")V");

    // Push the format name, which is empty, on the stack
    // for call to addDecimalFormat()
    il.append(classGen.loadTranslet());
    il.append(new PUSH(cpg, EMPTYSTRING));

    // Manufacture a DecimalFormatSymbols on the stack for
    // call to addDecimalFormat().  Use the US Locale as the
    // default, as most of its settings are equivalent to
    // the default settings required of xsl:decimal-format -
    // except for the NaN and infinity attributes.
    il.append(new NEW(cpg.addClass(DFS_CLASS)));
    il.append(DUP);
    il.append(new GETSTATIC(cpg.addFieldref(LOCALE_CLASS, "US", LOCALE_SIG)));
    il.append(new INVOKESPECIAL(init));

    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));

    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 put =
        cpg.addMethodref(TRANSLET_CLASS, "addDecimalFormat", "(" + STRING_SIG + DFS_SIG + ")V");
    il.append(new INVOKEVIRTUAL(put));
  }
  public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
    final ConstantPoolGen cpg = classGen.getConstantPool();
    final InstructionList il = methodGen.getInstructionList();

    if (!_isLiteral) {
      // if the ncname is an AVT, then the ncname has to be checked at runtime if it is a valid
      // ncname
      LocalVariableGen nameValue =
          methodGen.addLocalVariable2("nameValue", Util.getJCRefType(STRING_SIG), null);

      // store the name into a variable first so _name.translate only needs to be called once
      _name.translate(classGen, methodGen);
      nameValue.setStart(il.append(new ASTORE(nameValue.getIndex())));
      il.append(new ALOAD(nameValue.getIndex()));

      // call checkNCName if the name is an AVT
      final int check =
          cpg.addMethodref(BASIS_LIBRARY_CLASS, "checkNCName", "(" + STRING_SIG + ")V");
      il.append(new INVOKESTATIC(check));

      // Save the current handler base on the stack
      il.append(methodGen.loadHandler());
      il.append(DUP); // first arg to "attributes" call

      // load name value again
      nameValue.setEnd(il.append(new ALOAD(nameValue.getIndex())));
    } else {
      // Save the current handler base on the stack
      il.append(methodGen.loadHandler());
      il.append(DUP); // first arg to "attributes" call

      // Push attribute name
      _name.translate(classGen, methodGen); // 2nd arg
    }

    il.append(classGen.loadTranslet());
    il.append(
        new GETFIELD(
            cpg.addFieldref(TRANSLET_CLASS, "stringValueHandler", STRING_VALUE_HANDLER_SIG)));
    il.append(DUP);
    il.append(methodGen.storeHandler());

    // translate contents with substituted handler
    translateContents(classGen, methodGen);

    // get String out of the handler
    il.append(
        new INVOKEVIRTUAL(
            cpg.addMethodref(STRING_VALUE_HANDLER, "getValueOfPI", "()" + STRING_SIG)));
    // call "processingInstruction"
    final int processingInstruction =
        cpg.addInterfaceMethodref(
            TRANSLET_OUTPUT_INTERFACE,
            "processingInstruction",
            "(" + STRING_SIG + STRING_SIG + ")V");
    il.append(new INVOKEINTERFACE(processingInstruction, 3));
    // Restore old handler base from stack
    il.append(methodGen.storeHandler());
  }
Exemplo n.º 3
0
  /** Compile the translet's constructor */
  private void compileConstructor(ClassGenerator classGen, Output output) {

    final ConstantPoolGen cpg = classGen.getConstantPool();
    final InstructionList il = new InstructionList();

    final MethodGenerator constructor =
        new MethodGenerator(
            ACC_PUBLIC,
            com.sun.org.apache.bcel.internal.generic.Type.VOID,
            null,
            null,
            "<init>",
            _className,
            il,
            cpg);

    // Call the constructor in the AbstractTranslet superclass
    il.append(classGen.loadTranslet());
    il.append(new INVOKESPECIAL(cpg.addMethodref(TRANSLET_CLASS, "<init>", "()V")));

    constructor.markChunkStart();
    il.append(classGen.loadTranslet());
    il.append(
        new GETSTATIC(cpg.addFieldref(_className, STATIC_NAMES_ARRAY_FIELD, NAMES_INDEX_SIG)));
    il.append(new PUTFIELD(cpg.addFieldref(TRANSLET_CLASS, NAMES_INDEX, NAMES_INDEX_SIG)));

    il.append(classGen.loadTranslet());
    il.append(new GETSTATIC(cpg.addFieldref(_className, STATIC_URIS_ARRAY_FIELD, URIS_INDEX_SIG)));
    il.append(new PUTFIELD(cpg.addFieldref(TRANSLET_CLASS, URIS_INDEX, URIS_INDEX_SIG)));
    constructor.markChunkEnd();

    constructor.markChunkStart();
    il.append(classGen.loadTranslet());
    il.append(
        new GETSTATIC(cpg.addFieldref(_className, STATIC_TYPES_ARRAY_FIELD, TYPES_INDEX_SIG)));
    il.append(new PUTFIELD(cpg.addFieldref(TRANSLET_CLASS, TYPES_INDEX, TYPES_INDEX_SIG)));
    constructor.markChunkEnd();

    constructor.markChunkStart();
    il.append(classGen.loadTranslet());
    il.append(
        new GETSTATIC(
            cpg.addFieldref(_className, STATIC_NAMESPACE_ARRAY_FIELD, NAMESPACE_INDEX_SIG)));
    il.append(new PUTFIELD(cpg.addFieldref(TRANSLET_CLASS, NAMESPACE_INDEX, NAMESPACE_INDEX_SIG)));
    constructor.markChunkEnd();

    constructor.markChunkStart();
    il.append(classGen.loadTranslet());
    il.append(new PUSH(cpg, AbstractTranslet.CURRENT_TRANSLET_VERSION));
    il.append(
        new PUTFIELD(
            cpg.addFieldref(TRANSLET_CLASS, TRANSLET_VERSION_INDEX, TRANSLET_VERSION_INDEX_SIG)));
    constructor.markChunkEnd();

    if (_hasIdCall) {
      constructor.markChunkStart();
      il.append(classGen.loadTranslet());
      il.append(new PUSH(cpg, Boolean.TRUE));
      il.append(
          new PUTFIELD(cpg.addFieldref(TRANSLET_CLASS, HASIDCALL_INDEX, HASIDCALL_INDEX_SIG)));
      constructor.markChunkEnd();
    }

    // Compile in code to set the output configuration from <xsl:output>
    if (output != null) {
      // Set all the output settings files in the translet
      constructor.markChunkStart();
      output.translate(classGen, constructor);
      constructor.markChunkEnd();
    }

    // Compile default decimal formatting symbols.
    // This is an implicit, nameless xsl:decimal-format top-level element.
    if (_numberFormattingUsed) {
      constructor.markChunkStart();
      DecimalFormatting.translateDefaultDFS(classGen, constructor);
      constructor.markChunkEnd();
    }

    il.append(RETURN);

    classGen.addMethod(constructor);
  }
Exemplo n.º 4
0
  /**
   * Compile the namesArray, urisArray and typesArray into the static initializer. They are
   * read-only from the translet. All translet instances can share a single copy of this informtion.
   */
  private void compileStaticInitializer(ClassGenerator classGen) {
    final ConstantPoolGen cpg = classGen.getConstantPool();
    final InstructionList il = new InstructionList();

    final MethodGenerator staticConst =
        new MethodGenerator(
            ACC_PUBLIC | ACC_STATIC,
            com.sun.org.apache.bcel.internal.generic.Type.VOID,
            null,
            null,
            "<clinit>",
            _className,
            il,
            cpg);

    addStaticField(classGen, "[" + STRING_SIG, STATIC_NAMES_ARRAY_FIELD);
    addStaticField(classGen, "[" + STRING_SIG, STATIC_URIS_ARRAY_FIELD);
    addStaticField(classGen, "[I", STATIC_TYPES_ARRAY_FIELD);
    addStaticField(classGen, "[" + STRING_SIG, STATIC_NAMESPACE_ARRAY_FIELD);
    // Create fields of type char[] that will contain literal text from
    // the stylesheet.
    final int charDataFieldCount = getXSLTC().getCharacterDataCount();
    for (int i = 0; i < charDataFieldCount; i++) {
      addStaticField(classGen, STATIC_CHAR_DATA_FIELD_SIG, STATIC_CHAR_DATA_FIELD + i);
    }

    // Put the names array into the translet - used for dom/translet mapping
    final Vector namesIndex = getXSLTC().getNamesIndex();
    int size = namesIndex.size();
    String[] namesArray = new String[size];
    String[] urisArray = new String[size];
    int[] typesArray = new int[size];

    int index;
    for (int i = 0; i < size; i++) {
      String encodedName = (String) namesIndex.elementAt(i);
      if ((index = encodedName.lastIndexOf(':')) > -1) {
        urisArray[i] = encodedName.substring(0, index);
      }

      index = index + 1;
      if (encodedName.charAt(index) == '@') {
        typesArray[i] = DTM.ATTRIBUTE_NODE;
        index++;
      } else if (encodedName.charAt(index) == '?') {
        typesArray[i] = DTM.NAMESPACE_NODE;
        index++;
      } else {
        typesArray[i] = DTM.ELEMENT_NODE;
      }

      if (index == 0) {
        namesArray[i] = encodedName;
      } else {
        namesArray[i] = encodedName.substring(index);
      }
    }

    staticConst.markChunkStart();
    il.append(new PUSH(cpg, size));
    il.append(new ANEWARRAY(cpg.addClass(STRING)));
    int namesArrayRef = cpg.addFieldref(_className, STATIC_NAMES_ARRAY_FIELD, NAMES_INDEX_SIG);
    il.append(new PUTSTATIC(namesArrayRef));
    staticConst.markChunkEnd();

    for (int i = 0; i < size; i++) {
      final String name = namesArray[i];
      staticConst.markChunkStart();
      il.append(new GETSTATIC(namesArrayRef));
      il.append(new PUSH(cpg, i));
      il.append(new PUSH(cpg, name));
      il.append(AASTORE);
      staticConst.markChunkEnd();
    }

    staticConst.markChunkStart();
    il.append(new PUSH(cpg, size));
    il.append(new ANEWARRAY(cpg.addClass(STRING)));
    int urisArrayRef = cpg.addFieldref(_className, STATIC_URIS_ARRAY_FIELD, URIS_INDEX_SIG);
    il.append(new PUTSTATIC(urisArrayRef));
    staticConst.markChunkEnd();

    for (int i = 0; i < size; i++) {
      final String uri = urisArray[i];
      staticConst.markChunkStart();
      il.append(new GETSTATIC(urisArrayRef));
      il.append(new PUSH(cpg, i));
      il.append(new PUSH(cpg, uri));
      il.append(AASTORE);
      staticConst.markChunkEnd();
    }

    staticConst.markChunkStart();
    il.append(new PUSH(cpg, size));
    il.append(new NEWARRAY(BasicType.INT));
    int typesArrayRef = cpg.addFieldref(_className, STATIC_TYPES_ARRAY_FIELD, TYPES_INDEX_SIG);
    il.append(new PUTSTATIC(typesArrayRef));
    staticConst.markChunkEnd();

    for (int i = 0; i < size; i++) {
      final int nodeType = typesArray[i];
      staticConst.markChunkStart();
      il.append(new GETSTATIC(typesArrayRef));
      il.append(new PUSH(cpg, i));
      il.append(new PUSH(cpg, nodeType));
      il.append(IASTORE);
    }

    // Put the namespace names array into the translet
    final Vector namespaces = getXSLTC().getNamespaceIndex();
    staticConst.markChunkStart();
    il.append(new PUSH(cpg, namespaces.size()));
    il.append(new ANEWARRAY(cpg.addClass(STRING)));
    int namespaceArrayRef =
        cpg.addFieldref(_className, STATIC_NAMESPACE_ARRAY_FIELD, NAMESPACE_INDEX_SIG);
    il.append(new PUTSTATIC(namespaceArrayRef));
    staticConst.markChunkEnd();

    for (int i = 0; i < namespaces.size(); i++) {
      final String ns = (String) namespaces.elementAt(i);
      staticConst.markChunkStart();
      il.append(new GETSTATIC(namespaceArrayRef));
      il.append(new PUSH(cpg, i));
      il.append(new PUSH(cpg, ns));
      il.append(AASTORE);
      staticConst.markChunkEnd();
    }

    // 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++) {
      staticConst.markChunkStart();
      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)));
      staticConst.markChunkEnd();
    }

    il.append(RETURN);

    classGen.addMethod(staticConst);
  }
Exemplo n.º 5
0
  /**
   * Compile transform() into the output class. This method is used to initialize global variables
   * and global parameters. The current node is set to be the document's root node.
   */
  private void compileTransform(ClassGenerator classGen) {
    final ConstantPoolGen cpg = classGen.getConstantPool();

    /*
     * Define the the method transform with the following signature:
     * void transform(DOM, NodeIterator, HandlerBase)
     */
    final com.sun.org.apache.bcel.internal.generic.Type[] argTypes =
        new com.sun.org.apache.bcel.internal.generic.Type[3];
    argTypes[0] = Util.getJCRefType(DOM_INTF_SIG);
    argTypes[1] = Util.getJCRefType(NODE_ITERATOR_SIG);
    argTypes[2] = Util.getJCRefType(TRANSLET_OUTPUT_SIG);

    final String[] argNames = new String[3];
    argNames[0] = DOCUMENT_PNAME;
    argNames[1] = ITERATOR_PNAME;
    argNames[2] = TRANSLET_OUTPUT_PNAME;

    final InstructionList il = new InstructionList();
    final MethodGenerator transf =
        new MethodGenerator(
            ACC_PUBLIC,
            com.sun.org.apache.bcel.internal.generic.Type.VOID,
            argTypes,
            argNames,
            "transform",
            _className,
            il,
            classGen.getConstantPool());
    transf.addException("com.sun.org.apache.xalan.internal.xsltc.TransletException");

    // Define and initialize current with the root node
    final LocalVariableGen current =
        transf.addLocalVariable(
            "current", com.sun.org.apache.bcel.internal.generic.Type.INT, null, null);
    final String applyTemplatesSig = classGen.getApplyTemplatesSig();
    final int applyTemplates =
        cpg.addMethodref(getClassName(), "applyTemplates", applyTemplatesSig);
    final int domField = cpg.addFieldref(getClassName(), DOM_FIELD, DOM_INTF_SIG);

    // push translet for PUTFIELD
    il.append(classGen.loadTranslet());
    // prepare appropriate DOM implementation

    if (isMultiDocument()) {
      il.append(new NEW(cpg.addClass(MULTI_DOM_CLASS)));
      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
    final int gitr = cpg.addInterfaceMethodref(DOM_INTF, "getIterator", "()" + NODE_ITERATOR_SIG);
    il.append(transf.loadDOM());
    il.append(new INVOKEINTERFACE(gitr, 1));
    il.append(transf.nextNode());
    current.setStart(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() method. Note that this method is not
     * invoked here as keys for the input document are now created
     * in topLevel(). However, this method is still needed by the
     * LoadDocument class.
     */
    final String keySig = compileBuildKeys(classGen);
    final int keyIdx = cpg.addMethodref(getClassName(), "buildKeys", keySig);

    // 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);
      // 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);

    // Compute max locals + stack and add method to class
    classGen.addMethod(transf);
  }
Exemplo n.º 6
0
  /**
   * This method is called when the constructor is compiled in Stylesheet.compileConstructor() and
   * not as the syntax tree is traversed.
   */
  public void translate(ClassGenerator classGen, MethodGenerator methodGen) {

    ConstantPoolGen cpg = classGen.getConstantPool();
    InstructionList il = methodGen.getInstructionList();

    // DecimalFormatSymbols.<init>(Locale);
    // xsl:decimal-format - except for the NaN and infinity attributes.
    final int init = cpg.addMethodref(DFS_CLASS, "<init>", "(" + LOCALE_SIG + ")V");

    // Push the format name on the stack for call to addDecimalFormat()
    il.append(classGen.loadTranslet());
    il.append(new PUSH(cpg, _name.toString()));

    // Manufacture a DecimalFormatSymbols on the stack
    // for call to addDecimalFormat()
    // Use the US Locale as the default, as most of its settings
    // are equivalent to the default settings required of
    il.append(new NEW(cpg.addClass(DFS_CLASS)));
    il.append(DUP);
    il.append(new GETSTATIC(cpg.addFieldref(LOCALE_CLASS, "US", LOCALE_SIG)));
    il.append(new INVOKESPECIAL(init));

    String tmp = getAttribute("NaN");
    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));
  }