keywords.java

来自「java jdk 1.4的源码」· Java 代码 · 共 416 行 · 第 1/2 页

  /** substring-before function string. */
  private static final String FUNC_SUBSTRING_BEFORE_STRING =
    "substring-before";

  /** substring-after function string. */
  private static final String FUNC_SUBSTRING_AFTER_STRING = "substring-after";

  /** normalize-space function string. */
  private static final String FUNC_NORMALIZE_SPACE_STRING = "normalize-space";

  /** translate function string. */
  private static final String FUNC_TRANSLATE_STRING = "translate";

  /** concat function string. */
  private static final String FUNC_CONCAT_STRING = "concat";

  /** system-property function string. */
  private static final String FUNC_SYSTEM_PROPERTY_STRING = "system-property";

  /** function-available function string (XSLT). */
  private static final String FUNC_EXT_FUNCTION_AVAILABLE_STRING =
    "function-available";

  /** element-available function string (XSLT). */
  private static final String FUNC_EXT_ELEM_AVAILABLE_STRING =
    "element-available";

  /** substring function string. */
  private static final String FUNC_SUBSTRING_STRING = "substring";

  /** string-length function string. */
  private static final String FUNC_STRING_LENGTH_STRING = "string-length";

  /** unparsed-entity-uri function string (XSLT). */
  private static final String FUNC_UNPARSED_ENTITY_URI_STRING =
    "unparsed-entity-uri";

  // Proprietary, built in functions

  /** current function string (Proprietary). */
  private static final String FUNC_DOCLOCATION_STRING = "document-location";

  static
  {
    m_axisnames.put(FROM_ANCESTORS_STRING,
                    new Integer(OpCodes.FROM_ANCESTORS));
    m_axisnames.put(FROM_ANCESTORS_OR_SELF_STRING,
                    new Integer(OpCodes.FROM_ANCESTORS_OR_SELF));
    m_axisnames.put(FROM_ATTRIBUTES_STRING,
                    new Integer(OpCodes.FROM_ATTRIBUTES));
    m_axisnames.put(FROM_CHILDREN_STRING,
                    new Integer(OpCodes.FROM_CHILDREN));
    m_axisnames.put(FROM_DESCENDANTS_STRING,
                    new Integer(OpCodes.FROM_DESCENDANTS));
    m_axisnames.put(FROM_DESCENDANTS_OR_SELF_STRING,
                    new Integer(OpCodes.FROM_DESCENDANTS_OR_SELF));
    m_axisnames.put(FROM_FOLLOWING_STRING,
                    new Integer(OpCodes.FROM_FOLLOWING));
    m_axisnames.put(FROM_FOLLOWING_SIBLINGS_STRING,
                    new Integer(OpCodes.FROM_FOLLOWING_SIBLINGS));
    m_axisnames.put(FROM_PARENT_STRING,
                    new Integer(OpCodes.FROM_PARENT));
    m_axisnames.put(FROM_PRECEDING_STRING,
                    new Integer(OpCodes.FROM_PRECEDING));
    m_axisnames.put(FROM_PRECEDING_SIBLINGS_STRING,
                    new Integer(OpCodes.FROM_PRECEDING_SIBLINGS));
    m_axisnames.put(FROM_SELF_STRING,
                    new Integer(OpCodes.FROM_SELF));
    m_axisnames.put(FROM_NAMESPACE_STRING,
                    new Integer(OpCodes.FROM_NAMESPACE));
    m_nodetypes.put(NODETYPE_COMMENT_STRING,
                    new Integer(OpCodes.NODETYPE_COMMENT));
    m_nodetypes.put(NODETYPE_TEXT_STRING,
                    new Integer(OpCodes.NODETYPE_TEXT));
    m_nodetypes.put(NODETYPE_PI_STRING,
                    new Integer(OpCodes.NODETYPE_PI));
    m_nodetypes.put(NODETYPE_NODE_STRING,
                    new Integer(OpCodes.NODETYPE_NODE));
    m_nodetypes.put(NODETYPE_ANYELEMENT_STRING,
                    new Integer(OpCodes.NODETYPE_ANYELEMENT));
    m_keywords.put(FROM_SELF_ABBREVIATED_STRING,
                   new Integer(OpCodes.FROM_SELF));
    m_keywords.put(FUNC_ID_STRING,
                   new Integer(FunctionTable.FUNC_ID));
    m_keywords.put(FUNC_KEY_STRING,
                   new Integer(FunctionTable.FUNC_KEY));
    m_functions.put(FUNC_CURRENT_STRING,
                    new Integer(FunctionTable.FUNC_CURRENT));
    m_functions.put(FUNC_LAST_STRING,
                    new Integer(FunctionTable.FUNC_LAST));
    m_functions.put(FUNC_POSITION_STRING,
                    new Integer(FunctionTable.FUNC_POSITION));
    m_functions.put(FUNC_COUNT_STRING,
                    new Integer(FunctionTable.FUNC_COUNT));
    m_functions.put(FUNC_ID_STRING,
                    new Integer(FunctionTable.FUNC_ID));
    m_functions.put(FUNC_KEY_STRING,
                    new Integer(FunctionTable.FUNC_KEY));
    m_functions.put(FUNC_LOCAL_PART_STRING,
                    new Integer(FunctionTable.FUNC_LOCAL_PART));
    m_functions.put(FUNC_NAMESPACE_STRING,
                    new Integer(FunctionTable.FUNC_NAMESPACE));
    m_functions.put(FUNC_NAME_STRING,
                    new Integer(FunctionTable.FUNC_QNAME));
    m_functions.put(FUNC_GENERATE_ID_STRING,
                    new Integer(FunctionTable.FUNC_GENERATE_ID));
    m_functions.put(FUNC_NOT_STRING,
                    new Integer(FunctionTable.FUNC_NOT));
    m_functions.put(FUNC_TRUE_STRING,
                    new Integer(FunctionTable.FUNC_TRUE));
    m_functions.put(FUNC_FALSE_STRING,
                    new Integer(FunctionTable.FUNC_FALSE));
    m_functions.put(FUNC_BOOLEAN_STRING,
                    new Integer(FunctionTable.FUNC_BOOLEAN));
    m_functions.put(FUNC_LANG_STRING,
                    new Integer(FunctionTable.FUNC_LANG));
    m_functions.put(FUNC_NUMBER_STRING,
                    new Integer(FunctionTable.FUNC_NUMBER));
    m_functions.put(FUNC_FLOOR_STRING,
                    new Integer(FunctionTable.FUNC_FLOOR));
    m_functions.put(FUNC_CEILING_STRING,
                    new Integer(FunctionTable.FUNC_CEILING));
    m_functions.put(FUNC_ROUND_STRING,
                    new Integer(FunctionTable.FUNC_ROUND));
    m_functions.put(FUNC_SUM_STRING,
                    new Integer(FunctionTable.FUNC_SUM));
    m_functions.put(FUNC_STRING_STRING,
                    new Integer(FunctionTable.FUNC_STRING));
    m_functions.put(FUNC_STARTS_WITH_STRING,
                    new Integer(FunctionTable.FUNC_STARTS_WITH));
    m_functions.put(FUNC_CONTAINS_STRING,
                    new Integer(FunctionTable.FUNC_CONTAINS));
    m_functions.put(FUNC_SUBSTRING_BEFORE_STRING,
                    new Integer(FunctionTable.FUNC_SUBSTRING_BEFORE));
    m_functions.put(FUNC_SUBSTRING_AFTER_STRING,
                    new Integer(FunctionTable.FUNC_SUBSTRING_AFTER));
    m_functions.put(FUNC_NORMALIZE_SPACE_STRING,
                    new Integer(FunctionTable.FUNC_NORMALIZE_SPACE));
    m_functions.put(FUNC_TRANSLATE_STRING,
                    new Integer(FunctionTable.FUNC_TRANSLATE));
    m_functions.put(FUNC_CONCAT_STRING,
                    new Integer(FunctionTable.FUNC_CONCAT));

    //m_functions.put(FUNC_FORMAT_NUMBER_STRING, new Integer(FunctionTable.FUNC_FORMAT_NUMBER));
    m_functions.put(FUNC_SYSTEM_PROPERTY_STRING,
                    new Integer(FunctionTable.FUNC_SYSTEM_PROPERTY));
    m_functions.put(FUNC_EXT_FUNCTION_AVAILABLE_STRING,
                    new Integer(FunctionTable.FUNC_EXT_FUNCTION_AVAILABLE));
    m_functions.put(FUNC_EXT_ELEM_AVAILABLE_STRING,
                    new Integer(FunctionTable.FUNC_EXT_ELEM_AVAILABLE));
    m_functions.put(FUNC_SUBSTRING_STRING,
                    new Integer(FunctionTable.FUNC_SUBSTRING));
    m_functions.put(FUNC_STRING_LENGTH_STRING,
                    new Integer(FunctionTable.FUNC_STRING_LENGTH));
    m_functions.put(FUNC_UNPARSED_ENTITY_URI_STRING,
                    new Integer(FunctionTable.FUNC_UNPARSED_ENTITY_URI));

    // These aren't really functions.
    m_functions.put(NODETYPE_COMMENT_STRING,
                    new Integer(OpCodes.NODETYPE_COMMENT));
    m_functions.put(NODETYPE_TEXT_STRING,
                    new Integer(OpCodes.NODETYPE_TEXT));
    m_functions.put(NODETYPE_PI_STRING,
                    new Integer(OpCodes.NODETYPE_PI));
    m_functions.put(NODETYPE_NODE_STRING,
                    new Integer(OpCodes.NODETYPE_NODE));
    m_functions.put(FUNC_DOCLOCATION_STRING,
                    new Integer(FunctionTable.FUNC_DOCLOCATION));
  }

  /**
   * Tell if a built-in, non-namespaced function is available.
   *
   * @param methName The local name of the function.
   *
   * @return True if the function can be executed.
   */
  public static boolean functionAvailable(String methName)
  {

    try
    {
      Object tblEntry = m_functions.get(methName);

      if (null == tblEntry)
        return false;

      int funcType = ((Integer) tblEntry).intValue();

      switch (funcType)
      {
      case OpCodes.NODETYPE_COMMENT :
      case OpCodes.NODETYPE_TEXT :
      case OpCodes.NODETYPE_PI :
      case OpCodes.NODETYPE_NODE :
        return false;  // These look like functions but they're NodeTests.
      default :
        return true;
      }
    }
    catch (Exception e)
    {
      return false;
    }
  }
}