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1 // Copyright 2016 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
4 //
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
10
11 use super::*;
12
13 impl<'graph, G: ControlFlowGraph> ControlFlowGraph for &'graph G {
14     type Node = G::Node;
15
16     fn num_nodes(&self) -> usize {
17         (**self).num_nodes()
18     }
19
20     fn start_node(&self) -> Self::Node {
21         (**self).start_node()
22     }
23
24     fn predecessors<'iter>(&'iter self,
25                            node: Self::Node)
26                            -> <Self as GraphPredecessors<'iter>>::Iter {
27         (**self).predecessors(node)
28     }
29
30     fn successors<'iter>(&'iter self, node: Self::Node) -> <Self as GraphSuccessors<'iter>>::Iter {
31         (**self).successors(node)
32     }
33 }
34
35 impl<'iter, 'graph, G: ControlFlowGraph> GraphPredecessors<'iter> for &'graph G {
36     type Item = G::Node;
37     type Iter = <G as GraphPredecessors<'iter>>::Iter;
38 }
39
40 impl<'iter, 'graph, G: ControlFlowGraph> GraphSuccessors<'iter> for &'graph G {
41     type Item = G::Node;
42     type Iter = <G as GraphSuccessors<'iter>>::Iter;
43 }