rapx 0.7.31

A static analysis platform for Rust program analysis and verification
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use annotate_snippets::Level;

use crate::{
    analysis::dataflow::*,
    check::opt::OptCheck,
};
use rustc_middle::ty::TyCtxt;
use rustc_span::Span;

use crate::check::opt::report::OptReport;
use crate::check::opt::check_utils::node_matches_any_call;

crate::def_paths! {
    hashset_new: "std::collections::HashSet::new",
    hashset_with_capacity: "std::collections::HashSet::with_capacity",
    hashmap_new: "std::collections::HashMap::new",
    hashmap_with_capacity: "std::collections::HashMap::with_capacity",
    btreeset_new: "std::collections::BTreeSet::new",
    btreemap_new: "std::collections::BTreeMap::new",
}

pub struct ParticipantCheck {
    record: Vec<Span>, //Can split into 4 categories
}

impl OptCheck for ParticipantCheck {
    fn new() -> Self {
        Self { record: vec![] }
    }

    fn check(&mut self, graph: &Graph, tcx: &TyCtxt) {
        let def_paths = &DEFPATHS.get_or_init(|| DefPaths::new(tcx));
        for node in graph.nodes.iter() {
            if node_matches_any_call(node, |id| {
                id == def_paths.hashset_new.last_def_id()
                    || id == def_paths.hashmap_new.last_def_id()
                    || id == def_paths.btreemap_new.last_def_id()
                    || id == def_paths.btreeset_new.last_def_id()
                    || id == def_paths.hashmap_with_capacity.last_def_id()
                    || id == def_paths.hashset_with_capacity.last_def_id()
            }) {
                self.record.push(node.span);
            }
        }
    }

    fn report(&self, graph: &Graph) {
        for span in self.record.iter() {
            report_participant(graph, *span);
        }
    }

    fn cnt(&self) -> usize {
        self.record.len()
    }
}

fn report_participant(graph: &Graph, span: Span) {
    OptReport::from_graph(graph)
        .file_name(span)
        .title("Suboptimal data collection detected")
        .annotate(Level::Error, span, "Data collection created here")
        .footer("Use faster data collection or hash operators instead. Static container is also a choice")
        .emit();
}