src/librustc_data_structures/control_flow_graph/reference.rs

   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 }