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Fix RustAudio#103. Use the StableDag structure which (which uses petgraph's StableGraph) implements a directed acyclic graph with stable indices.
Use the new Walker API.
fwcd
commented
Sep 14, 2019
| for connection in self.dag.edge_weights_mut() { | ||
| let edge_ids = self.edge_references().map(|e| e.id()).collect::<Vec<_>>(); | ||
| for edge_id in edge_ids { | ||
| let connection = self.connection_mut(edge_id).unwrap(); |
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Unfortunately, this also means that we cannot mutably iterate the graph's nodes/edges directly (yet). To address this, I have implemented this workaround which is slightly less efficient.
fwcd
commented
Sep 14, 2019
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| [dependencies] | ||
| daggy = "0.4.0" | ||
| daggy = { git = "https://github.com/mitchmindtree/daggy", rev = "bcb36c7b", features = ["stable_dag"] } |
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Also, we might want to update to the next proper version of daggy once it is released to crates.io.
The EdgeRef trait provides information about the edges returned by Graph::edge_references.
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Using
StableDagshould fix the index-shifting behavior, which previously occurred when nodes were removed from the graph.There are a few API-breaking changes with this solution, however:
raw_nodesis replaced bynode_referencesraw_edgesis replaced byedge_referencesWalker'snext_nodeandnext_edgeare replaced bywalk_next(as defined by the upstream API)