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use super::*;
pub struct TransposedGraph<G: ControlFlowGraph> {
base_graph: G,
start_node: G::Node,
}
impl<G: ControlFlowGraph> TransposedGraph<G> {
pub fn new(base_graph: G) -> Self {
let start_node = base_graph.start_node();
Self::with_start(base_graph, start_node)
}
pub fn with_start(base_graph: G, start_node: G::Node) -> Self {
TransposedGraph {
base_graph: base_graph,
start_node: start_node,
}
}
}
impl<G: ControlFlowGraph> ControlFlowGraph for TransposedGraph<G> {
type Node = G::Node;
fn num_nodes(&self) -> usize {
self.base_graph.num_nodes()
}
fn start_node(&self) -> Self::Node {
self.start_node
}
fn predecessors<'graph>(&'graph self,
node: Self::Node)
-> <Self as GraphPredecessors<'graph>>::Iter {
self.base_graph.successors(node)
}
fn successors<'graph>(&'graph self,
node: Self::Node)
-> <Self as GraphSuccessors<'graph>>::Iter {
self.base_graph.predecessors(node)
}
}
impl<'graph, G: ControlFlowGraph> GraphPredecessors<'graph> for TransposedGraph<G> {
type Item = G::Node;
type Iter = <G as GraphSuccessors<'graph>>::Iter;
}
impl<'graph, G: ControlFlowGraph> GraphSuccessors<'graph> for TransposedGraph<G> {
type Item = G::Node;
type Iter = <G as GraphPredecessors<'graph>>::Iter;
}