diff options
Diffstat (limited to 'glib/src')
-rw-r--r-- | glib/src/nodetree.ccg | 38 | ||||
-rw-r--r-- | glib/src/nodetree.hg | 39 |
2 files changed, 73 insertions, 4 deletions
diff --git a/glib/src/nodetree.ccg b/glib/src/nodetree.ccg index 6ee2218c..dbfc52e5 100644 --- a/glib/src/nodetree.ccg +++ b/glib/src/nodetree.ccg @@ -1 +1,39 @@ +/* Copyright (C) 2007 glibmm development team + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * This library 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 GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library. If not, see <http://www.gnu.org/licenses/>. + */ + #include <glibmm/nodetree.h> + +namespace Glib +{ +extern "C" +{ +// A function with external linkage and C linkage does not get a mangled name. +// Even though glibmm_NodeTree_c_callback_traverse() and glibmm_NodeTree_c_callback_foreach() +// are declared in a named namespace, the linker does not see the namespace name. +// Therefore the function names shall have a prefix, hopefully unique. +gboolean glibmm_NodeTree_c_callback_traverse(GNode* node, gpointer data) +{ + auto traverse_data = reinterpret_cast<NodeTreeCallbackTraverseData*>(data); + return (*traverse_data->func)(node, traverse_data->data); +} + +void glibmm_NodeTree_c_callback_foreach(GNode* node, gpointer data) +{ + auto foreach_data = reinterpret_cast<NodeTreeCallbackForeachData*>(data); + (*foreach_data->func)(node, foreach_data->data); +} +} // extern "C" +} // namespace Glib diff --git a/glib/src/nodetree.hg b/glib/src/nodetree.hg index 300b7f31..62353574 100644 --- a/glib/src/nodetree.hg +++ b/glib/src/nodetree.hg @@ -29,6 +29,33 @@ _DEFS(glibmm,glib) namespace Glib { +#ifndef DOXYGEN_SHOULD_SKIP_THIS +extern "C" +{ +/// Wrapper for invoking a TraverseFunc. +gboolean glibmm_NodeTree_c_callback_traverse(GNode* node, gpointer data); + +/// Wrapper for invoking a ForeachFunc. +void glibmm_NodeTree_c_callback_foreach(GNode* node, gpointer data); + +} // extern "C" + +// Like GNodeTraverseFunc and GNodeForeachFunc, but with C++ linkage. +using NodeTreeCallbackTraverseFuncType = gboolean (*)(GNode *node, gpointer user_data); +using NodeTreeCallbackForeachFuncType = void (*)(GNode *node, gpointer user_data); + +struct NodeTreeCallbackTraverseData +{ + NodeTreeCallbackTraverseFuncType func; + gpointer data; +}; + +struct NodeTreeCallbackForeachData +{ + NodeTreeCallbackForeachFuncType func; + gpointer data; +}; +#endif /* DOXYGEN_SHOULD_SKIP_THIS */ /** N-ary Trees - trees of data with any number of branches * The NodeTree class and its associated functions provide an N-ary tree data structure, in which nodes in the tree can contain arbitrary data. @@ -300,7 +327,8 @@ public: void traverse(const TraverseFunc& func, TraverseType order = TraverseType::IN_ORDER, TraverseFlags flags = TraverseFlags::ALL, int max_depth = -1) { TraverseFunc func_copy = func; - g_node_traverse(gobj(), (GTraverseType)order, (GTraverseFlags)flags, max_depth, c_callback_traverse, reinterpret_cast<gpointer>(&func_copy)); + NodeTreeCallbackTraverseData traverse_data = { &c_callback_traverse, &func_copy }; + g_node_traverse(gobj(), (GTraverseType)order, (GTraverseFlags)flags, max_depth, glibmm_NodeTree_c_callback_traverse, &traverse_data); } _IGNORE(g_node_traverse); @@ -313,7 +341,8 @@ public: void foreach(const ForeachFunc& func, TraverseFlags flags = TraverseFlags::ALL) { ForeachFunc func_copy = func; - g_node_children_foreach(gobj(), (GTraverseFlags)flags, c_callback_foreach, reinterpret_cast<gpointer>(&func_copy)); + NodeTreeCallbackForeachData foreach_data = { &c_callback_foreach, &func_copy }; + g_node_children_foreach(gobj(), (GTraverseFlags)flags, glibmm_NodeTree_c_callback_foreach, &foreach_data); } _IGNORE(g_node_children_foreach) @@ -331,7 +360,8 @@ public: using type_foreach_gnode_slot = sigc::slot<void(GNode*)>; type_foreach_gnode_slot bound_slot = sigc::bind(real_slot, the_data, &child); - g_node_children_foreach(gobj(), (GTraverseFlags)flags, c_callback_foreach_compare_child, reinterpret_cast<gpointer>(&bound_slot)); + NodeTreeCallbackForeachData foreach_data = { &c_callback_foreach_compare_child, &bound_slot }; + g_node_children_foreach(gobj(), (GTraverseFlags)flags, glibmm_NodeTree_c_callback_foreach, &foreach_data); return wrap(child); } @@ -365,7 +395,8 @@ public: using type_traverse_gnode_slot = sigc::slot<gboolean(GNode*)>; type_traverse_gnode_slot bound_slot = sigc::bind(real_slot, the_data, &child); - g_node_traverse(const_cast<GNode*>(gobj()), (GTraverseType)order, (GTraverseFlags)flags, -1, c_callback_traverse_compare_node, reinterpret_cast<gpointer>(&bound_slot)); + NodeTreeCallbackTraverseData traverse_data = { &c_callback_traverse_compare_node, &bound_slot }; + g_node_traverse(const_cast<GNode*>(gobj()), (GTraverseType)order, (GTraverseFlags)flags, -1, glibmm_NodeTree_c_callback_traverse, &traverse_data); return wrap(child); } |