rapx/check/opt/data_collection/suboptimal/
participant.rs

1use annotate_snippets::Level;
2
3use crate::{analysis::dataflow::*, check::opt::OptCheck};
4use rustc_middle::ty::TyCtxt;
5use rustc_span::Span;
6
7use crate::check::opt::check_utils::node_matches_any_call;
8use crate::check::opt::report::OptReport;
9
10crate::def_paths! {
11    hashset_new: "std::collections::HashSet::new",
12    hashset_with_capacity: "std::collections::HashSet::with_capacity",
13    hashmap_new: "std::collections::HashMap::new",
14    hashmap_with_capacity: "std::collections::HashMap::with_capacity",
15    btreeset_new: "std::collections::BTreeSet::new",
16    btreemap_new: "std::collections::BTreeMap::new",
17}
18
19pub struct ParticipantCheck {
20    record: Vec<Span>, //Can split into 4 categories
21}
22
23impl OptCheck for ParticipantCheck {
24    fn new() -> Self {
25        Self { record: vec![] }
26    }
27
28    fn check(&mut self, graph: &Graph, tcx: &TyCtxt) {
29        let def_paths = &DEFPATHS.get_or_init(|| DefPaths::new(tcx));
30        for node in graph.nodes.iter() {
31            if node_matches_any_call(node, |id| {
32                id == def_paths.hashset_new.last_def_id()
33                    || id == def_paths.hashmap_new.last_def_id()
34                    || id == def_paths.btreemap_new.last_def_id()
35                    || id == def_paths.btreeset_new.last_def_id()
36                    || id == def_paths.hashmap_with_capacity.last_def_id()
37                    || id == def_paths.hashset_with_capacity.last_def_id()
38            }) {
39                self.record.push(node.span);
40            }
41        }
42    }
43
44    fn report(&self, graph: &Graph) {
45        for span in self.record.iter() {
46            report_participant(graph, *span);
47        }
48    }
49
50    fn cnt(&self) -> usize {
51        self.record.len()
52    }
53}
54
55fn report_participant(graph: &Graph, span: Span) {
56    OptReport::from_graph(graph)
57        .file_name(span)
58        .title("Suboptimal data collection detected")
59        .annotate(Level::Error, span, "Data collection created here")
60        .footer("Use faster data collection or hash operators instead. Static container is also a choice")
61        .emit();
62}
rapx/check/opt/data_collection/suboptimal/participant.rs

rapx/check/opt/data_collection/suboptimal/
participant.rs
