Imported Upstream version 2.1.3upstream/2.1.3

1 files changed, 0 insertions, 180 deletions

diff --git a/src/prefix_tree.cpp b/src/prefix_tree.cpp
deleted file mode 100644
index 6d4f084..0000000
--- a/src/prefix_tree.cpp
+++ /dev/null
@@ -1,180 +0,0 @@
-/*
-    Copyright (c) 2007-2010 iMatix Corporation
-
-    This file is part of 0MQ.
-
-    0MQ is free software; you can redistribute it and/or modify it under
-    the terms of the Lesser GNU General Public License as published by
-    the Free Software Foundation; either version 3 of the License, or
-    (at your option) any later version.
-
-    0MQ is distributed in the hope that it will be useful,
-    but WITHOUT ANY WARRANTY; without even the implied warranty of
-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-    Lesser GNU General Public License for more details.
-
-    You should have received a copy of the Lesser GNU General Public License
-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include <stdlib.h>
-
-#include <new>
-#include <algorithm>
-
-#include "platform.hpp"
-#if defined ZMQ_HAVE_WINDOWS
-#include "windows.hpp"
-#endif
-
-#include "err.hpp"
-#include "prefix_tree.hpp"
-
-zmq::prefix_tree_t::prefix_tree_t () :
-    refcnt (0),
-    min (0),
-    count (0)
-{
-}
-
-zmq::prefix_tree_t::~prefix_tree_t ()
-{
-    if (count == 1)
-        delete next.node;
-    else if (count > 1) {
-        for (unsigned short i = 0; i != count; ++i)
-            if (next.table [i])
-                delete next.table [i];
-        free (next.table);
-    }
-}
-
-void zmq::prefix_tree_t::add (unsigned char *prefix_, size_t size_)
-{
-    //  We are at the node corresponding to the prefix. We are done.
-    if (!size_) {
-        ++refcnt;
-        return;
-    }
-
-    unsigned char c = *prefix_;
-    if (c < min || c >= min + count) {
-
-        //  The character is out of range of currently handled
-        //  charcters. We have to extend the table.
-        if (!count) {
-            min = c;
-            count = 1;
-            next.node = NULL;
-        }
-        else if (count == 1) {
-            unsigned char oldc = min;
-            prefix_tree_t *oldp = next.node;
-            count = (min < c ? c - min : min - c) + 1;
-            next.table = (prefix_tree_t**)
-                malloc (sizeof (prefix_tree_t*) * count);
-            zmq_assert (next.table);
-            for (unsigned short i = 0; i != count; ++i)
-                next.table [i] = 0;
-            min = std::min (min, c);
-            next.table [oldc - min] = oldp;
-        }
-        else if (min < c) {
-
-            //  The new character is above the current character range.
-            unsigned short old_count = count;
-            count = c - min + 1;
-            next.table = (prefix_tree_t**) realloc ((void*) next.table,
-                sizeof (prefix_tree_t*) * count);
-            zmq_assert (next.table);
-            for (unsigned short i = old_count; i != count; i++)
-                next.table [i] = NULL;
-        }
-        else {
-
-            //  The new character is below the current character range.
-            unsigned short old_count = count;
-            count = (min + old_count) - c;
-            next.table = (prefix_tree_t**) realloc ((void*) next.table,
-                sizeof (prefix_tree_t*) * count);
-            zmq_assert (next.table);
-            memmove (next.table + min - c, next.table,
-                old_count * sizeof (prefix_tree_t*));
-            for (unsigned short i = 0; i != min - c; i++)
-                next.table [i] = NULL;
-            min = c;
-        }
-    }
-
-    //  If next node does not exist, create one.
-    if (count == 1) {
-        if (!next.node) {
-            next.node = new (std::nothrow) prefix_tree_t;
-            zmq_assert (next.node);
-        }
-        next.node->add (prefix_ + 1, size_ - 1);
-    }
-    else {
-        if (!next.table [c - min]) {
-            next.table [c - min] = new (std::nothrow) prefix_tree_t;
-            zmq_assert (next.table [c - min]);
-        }
-        next.table [c - min]->add (prefix_ + 1, size_ - 1);
-    }
-}
-
-bool zmq::prefix_tree_t::rm (unsigned char *prefix_, size_t size_)
-{
-     if (!size_) {
-         if (!refcnt)
-             return false;
-         refcnt--;
-         return true;
-     }
-
-     unsigned char c = *prefix_;
-     if (!count || c < min || c >= min + count)
-         return false;
-
-     prefix_tree_t *next_node =
-         count == 1 ? next.node : next.table [c - min];
-
-     if (!next_node)
-         return false;
-
-     return next_node->rm (prefix_ + 1, size_ - 1);
-}
-
-bool zmq::prefix_tree_t::check (unsigned char *data_, size_t size_)
-{
-    //  This function is on critical path. It deliberately doesn't use
-    //  recursion to get a bit better performance.
-    prefix_tree_t *current = this;
-    while (true) {
-
-        //  We've found a corresponding subscription!
-        if (current->refcnt)
-            return true;
-
-        //  We've checked all the data and haven't found matching subscription.
-        if (!size_)
-            return false;
-
-        //  If there's no corresponding slot for the first character
-        //  of the prefix, the message does not match.
-        unsigned char c = *data_;
-        if (c < current->min || c >= current->min + current->count)
-            return false;
-
-        //  Move to the next character.
-        if (current->count == 1)
-            current = current->next.node;
-        else {
-            current = current->next.table [c - current->min];
-            if (!current)
-                return false;
-        }
-        data_++;
-        size_--;
-    }
-}