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Code Issues Releases Wiki Activity

ircd:Ⓜ️:state: Move DFS recursor out of closure.

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This commit is contained in:
Jason Volk 2018-02-05 11:00:19 -08:00
parent 69427d7e43
commit efeaf3475a
1 changed files with 53 additions and 41 deletions
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42
ircd/m/state.cc
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@ -79,6 +79,11 @@ ircd::m::state::get(db::column &column,
});
}
namespace ircd::m::state
{
bool _dfs_recurse(db::column &, const search_closure &, const node &, int &);
}
bool
ircd::m::state::dfs(const string_view &node_id,
const search_closure &closure)
@ -95,10 +100,23 @@ bool
ircd::m::state::dfs(db::column &column,
const string_view &node_id,
const search_closure &closure)
{
bool ret{false};
get_node(column, node_id, [&column, &closure, &ret]
(const auto &node)
{
int depth(-1);
const std::function<bool (const node &)> recurse{[&depth, &closure, &column, &recurse]
(const node &node)
ret = _dfs_recurse(column, closure, node, depth);
});
return ret;
}
bool
ircd::m::state::_dfs_recurse(db::column &column,
const search_closure &closure,
const node &node,
int &depth)
{
++depth;
const unwind down{[&depth]
@ -109,14 +127,18 @@ ircd::m::state::dfs(db::column &column,
const node::rep rep{node};
for(uint pos(0); pos < rep.kn || pos < rep.cn; ++pos)
{
const auto child{unquote(rep.chld[pos])};
const auto child
{
unquote(rep.chld[pos])
};
if(!empty(child))
{
bool ret{false};
get_node(column, child, [&ret, &recurse]
get_node(column, child, [&column, &closure, &depth, &ret]
(const auto &node)
{
ret = recurse(node);
ret = _dfs_recurse(column, closure, node, depth);
});
if(ret)
@ -133,16 +155,6 @@ ircd::m::state::dfs(db::column &column,
}
return false;
}};
bool ret{false};
get_node(column, node_id, [&ret, &recurse]
(const auto &node)
{
ret = recurse(node);
});
return ret;
}
// Internal insertion operations