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diff --git a/src/data/document.h b/src/data/document.h
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+/*
+ * Copyright (c) 2003-2007, John Wiegley.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ *   notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ *   notice, this list of conditions and the following disclaimer in the
+ *   documentation and/or other materials provided with the distribution.
+ *
+ * - Neither the name of New Artisans LLC nor the names of its
+ *   contributors may be used to endorse or promote products derived from
+ *   this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _DOCUMENT_H
+#define _DOCUMENT_H
+
+#include "node.h"
+#include "value.h"
+
+namespace ledger {
+namespace xml {
+
+enum ledger_builtins_t {
+  ACCOUNT_ATTR = 10,
+  ACCOUNT_PATH_NODE,
+  AMOUNT_ATTR,
+  AMOUNT_NODE,
+  AMOUNT_EXPR_NODE,
+  ARG_ATTR,
+  AUTO_ENTRY_NODE,
+  BALANCE_ATTR,
+  CHECKIN_NODE,
+  CLEARED_ATTR,
+  CODE_ATTR,
+  COMMODITY_NODE,
+  COMMODITY_CONVERSION_NODE,
+  COMMODITY_NOMARKET_NODE,
+  COMMODITY_TEMPLATE_NODE,
+  COST_ATTR,
+  CURRENT_YEAR_NODE,
+  DATE_ATTR,
+  DEFAULT_ACCOUNT_NODE,
+  DIRECTIVE_NODE,
+  EFF_DATE_ATTR,
+  ENTRIES_NODE,
+  ENTRY_NODE,
+  FROM_ATTR,
+  JOURNAL_NODE,
+  LEDGER_NODE,
+  NAME_ATTR,
+  NOTE_NODE,
+  PAYEE_NODE,
+  PENDING_ATTR,
+  PERIOD_NODE,
+  PERIOD_ENTRY_NODE,
+  PRICE_ATTR,
+  PRICE_HISTORY_NODE,
+  RULE_NODE,
+  SYMBOL_ATTR,
+  TEMPLATE_ATTR,
+  TIME_ATTR,
+  TO_ATTR,
+  TRANSACTION_NODE,
+  VIRTUAL_ATTR,
+  YEAR_ATTR
+};
+
+class document_t : public parent_node_t
+{
+  typedef std::pair<string, nameid_t> name_pair;
+
+  typedef multi_index_container<
+    name_pair,
+    multi_index::indexed_by<
+      multi_index::random_access<>,
+      multi_index::hashed_unique<
+	multi_index::member<name_pair, string, &name_pair::first> >
+    >
+  > names_t;
+
+  optional<names_t> names;
+
+public:
+  // Ids 0-9 are reserved.  10-999 are for "builtin" names.  1000+ are
+  // for dynamically registered names.
+  enum special_names_t {
+    CURRENT, PARENT, ROOT, ALL, LAST_BUILTIN = 10
+  };
+
+  document_t(node_t::nameid_t _name_id)
+    : parent_node_t(_name_id, *this) {
+    TRACE_CTOR(xml::document_t, "node_t::nameid_t");
+  }
+  ~document_t() {
+    TRACE_DTOR(xml::document_t);
+  }
+
+  nameid_t register_name(const string& name);
+
+  optional<nameid_t>        lookup_name_id(const string& name) const;
+  static optional<nameid_t> lookup_builtin_id(const string& name);
+  optional<const char *>    lookup_name(nameid_t id) const;
+
+  void print(std::ostream& out) const;
+
+#if 0
+#if defined(HAVE_EXPAT) || defined(HAVE_XMLPARSE)
+  class parser_t
+  {
+  public:
+    document_t *	document;
+    XML_Parser		parser;
+    string		have_error;
+    const char *	pending;
+    node_t::attrs_map * pending_attrs;
+    bool                handled_data;
+
+    std::list<parent_node_t *> node_stack;
+
+    parser_t() : document(NULL), pending(NULL), pending_attrs(NULL),
+		 handled_data(false) {}
+    virtual ~parser_t() {}
+
+    virtual bool         test(std::istream& in) const;
+    virtual document_t * parse(std::istream& in);
+  };
+#endif
+#endif
+};
+
+} // namespace xml
+} // namespace ledger
+
+#endif // _DOCUMENT_H