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authorJohn Wiegley <johnw@newartisans.com>2008-08-05 13:17:04 -0400
committerJohn Wiegley <johnw@newartisans.com>2008-08-05 18:05:49 -0400
commitf6f4a46cf5b14f9a2170cd6475958efbf320caec (patch)
tree05bc1defcdebc201de3dd10477483d906a842821 /src/iterators.h
parentb7970b29855563e4c67f85af8b31233eda80c22a (diff)
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Moved around most of the files so that source code is in src/, documentation
is in doc/, etc.
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+/*
+ * Copyright (c) 2003-2008, 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 _ITERATORS_H
+#define _ITERATORS_H
+
+#include "journal.h"
+#include "entry.h"
+#include "account.h"
+
+namespace ledger {
+
+class xacts_iterator : public noncopyable
+{
+public:
+ virtual xact_t * operator()() = 0;
+};
+
+class entry_xacts_iterator : public xacts_iterator
+{
+ xacts_list::iterator xacts_i;
+ xacts_list::iterator xacts_end;
+
+ bool xacts_uninitialized;
+
+public:
+ entry_xacts_iterator() : xacts_uninitialized(true) {
+ TRACE_CTOR(entry_xacts_iterator, "");
+ }
+ entry_xacts_iterator(entry_t& entry)
+ : xacts_uninitialized(true) {
+ TRACE_CTOR(entry_xacts_iterator, "entry_t&");
+ reset(entry);
+ }
+ virtual ~entry_xacts_iterator() throw() {
+ TRACE_DTOR(entry_xacts_iterator);
+ }
+
+ void reset(entry_t& entry) {
+ xacts_i = entry.xacts.begin();
+ xacts_end = entry.xacts.end();
+
+ xacts_uninitialized = false;
+ }
+
+ virtual xact_t * operator()() {
+ if (xacts_i == xacts_end || xacts_uninitialized)
+ return NULL;
+ return *xacts_i++;
+ }
+};
+
+class entries_iterator : public noncopyable
+{
+ ptr_list<journal_t>::iterator journals_i;
+ ptr_list<journal_t>::iterator journals_end;
+
+ bool journals_uninitialized;
+
+ entries_list::iterator entries_i;
+ entries_list::iterator entries_end;
+
+ bool entries_uninitialized;
+
+public:
+ entries_iterator()
+ : journals_uninitialized(true), entries_uninitialized(true) {
+ TRACE_CTOR(entries_iterator, "");
+ }
+ entries_iterator(session_t& session)
+ : journals_uninitialized(true), entries_uninitialized(true) {
+ TRACE_CTOR(entries_iterator, "session_t&");
+ reset(session);
+ }
+ ~entries_iterator() throw() {
+ TRACE_DTOR(entries_iterator);
+ }
+
+ void reset(session_t& session);
+
+ entry_t * operator()();
+};
+
+class session_xacts_iterator : public xacts_iterator
+{
+ entries_iterator entries;
+ entry_xacts_iterator xacts;
+
+public:
+ session_xacts_iterator() {
+ TRACE_CTOR(session_xacts_iterator, "");
+ }
+ session_xacts_iterator(session_t& session) {
+ TRACE_CTOR(session_xacts_iterator, "session_t&");
+ reset(session);
+ }
+ virtual ~session_xacts_iterator() throw() {
+ TRACE_DTOR(session_xacts_iterator);
+ }
+
+ void reset(session_t& session);
+
+ virtual xact_t * operator()();
+};
+
+class accounts_iterator : public noncopyable
+{
+public:
+ virtual account_t * operator()() = 0;
+};
+
+class basic_accounts_iterator : public accounts_iterator
+{
+ std::list<accounts_map::const_iterator> accounts_i;
+ std::list<accounts_map::const_iterator> accounts_end;
+
+public:
+ basic_accounts_iterator() {
+ TRACE_CTOR(basic_accounts_iterator, "");
+ }
+ basic_accounts_iterator(account_t& account) {
+ TRACE_CTOR(basic_accounts_iterator, "account_t&");
+ push_back(account);
+ }
+ virtual ~basic_accounts_iterator() throw() {
+ TRACE_DTOR(basic_accounts_iterator);
+ }
+
+ void push_back(account_t& account) {
+ accounts_i.push_back(account.accounts.begin());
+ accounts_end.push_back(account.accounts.end());
+ }
+
+ virtual account_t * operator()();
+};
+
+class sorted_accounts_iterator : public accounts_iterator
+{
+ expr_t sort_cmp;
+
+ typedef std::deque<account_t *> accounts_deque_t;
+
+ std::list<accounts_deque_t> accounts_list;
+ std::list<accounts_deque_t::const_iterator> sorted_accounts_i;
+ std::list<accounts_deque_t::const_iterator> sorted_accounts_end;
+
+public:
+ sorted_accounts_iterator(const string& sort_order) {
+ TRACE_CTOR(sorted_accounts_iterator, "const string&");
+ sort_cmp = expr_t(sort_order);
+ }
+ sorted_accounts_iterator(account_t& account, const string& sort_order) {
+ TRACE_CTOR(sorted_accounts_iterator, "account_t&, const string&");
+ sort_cmp = expr_t(sort_order);
+ push_back(account);
+ }
+ virtual ~sorted_accounts_iterator() throw() {
+ TRACE_DTOR(sorted_accounts_iterator);
+ }
+
+ void sort_accounts(account_t& account, accounts_deque_t& deque);
+
+ void push_back(account_t& account) {
+ accounts_list.push_back(accounts_deque_t());
+ sort_accounts(account, accounts_list.back());
+
+ sorted_accounts_i.push_back(accounts_list.back().begin());
+ sorted_accounts_end.push_back(accounts_list.back().end());
+ }
+
+ virtual account_t * operator()();
+};
+
+class journals_iterator : public noncopyable
+{
+ ptr_list<journal_t>::iterator journals_i;
+ ptr_list<journal_t>::iterator journals_end;
+
+public:
+ journals_iterator() {
+ TRACE_CTOR(journals_iterator, "");
+ }
+ journals_iterator(session_t& session) {
+ TRACE_CTOR(journals_iterator, "session_t&");
+ reset(session);
+ }
+ virtual ~journals_iterator() throw() {
+ TRACE_DTOR(journals_iterator);
+ }
+
+ void reset(session_t& session);
+
+ virtual journal_t * operator()();
+};
+
+} // namespace ledger
+
+#endif // _ITERATORS_H