cairo-lang-lowering 2.4.1

Cairo lowering phase.
Documentation 
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use cairo_lang_utils::graph_algos::graph_node::GraphNode;
use cairo_lang_utils::graph_algos::strongly_connected_components::ComputeScc;

use super::strongly_connected_components::concrete_function_with_body_scc;
use crate::db::LoweringGroup;
use crate::ids::ConcreteFunctionWithBodyId;

/// A node to use in graph-algorithms.
#[derive(Clone)]
pub struct ConcreteFunctionWithBodyPostInlineNode<'a> {
    pub function_id: ConcreteFunctionWithBodyId,
    pub db: &'a dyn LoweringGroup,
}
impl<'a> GraphNode for ConcreteFunctionWithBodyPostInlineNode<'a> {
    type NodeId = ConcreteFunctionWithBodyId;

    fn get_neighbors(&self) -> Vec<Self> {
        let Ok(direct_callees) = self
            .db
            .concrete_function_with_body_postinline_direct_callees_with_body(self.function_id)
        else {
            return vec![];
        };
        direct_callees
            .into_iter()
            .map(|callee| ConcreteFunctionWithBodyPostInlineNode {
                function_id: callee,
                db: self.db,
            })
            .collect()
    }

    fn get_id(&self) -> Self::NodeId {
        self.function_id
    }
}
impl<'a> ComputeScc for ConcreteFunctionWithBodyPostInlineNode<'a> {
    fn compute_scc(&self) -> Vec<Self::NodeId> {
        concrete_function_with_body_scc(self.db, self.function_id)
    }
}

#[derive(Clone)]
pub struct ConcreteFunctionWithBodyPostPanicNode<'a> {
    pub function_id: ConcreteFunctionWithBodyId,
    pub db: &'a dyn LoweringGroup,
}
impl<'a> GraphNode for ConcreteFunctionWithBodyPostPanicNode<'a> {
    type NodeId = ConcreteFunctionWithBodyId;

    fn get_neighbors(&self) -> Vec<Self> {
        let Ok(direct_callees) = self
            .db
            .concrete_function_with_body_postpanic_direct_callees_with_body(self.function_id)
        else {
            return vec![];
        };
        direct_callees
            .into_iter()
            .map(|callee| ConcreteFunctionWithBodyPostPanicNode {
                function_id: callee,
                db: self.db,
            })
            .collect()
    }

    fn get_id(&self) -> Self::NodeId {
        self.function_id
    }
}
impl<'a> ComputeScc for ConcreteFunctionWithBodyPostPanicNode<'a> {
    fn compute_scc(&self) -> Vec<Self::NodeId> {
        concrete_function_with_body_scc(self.db, self.function_id)
    }
}