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SccGraph

Struct SccGraph 

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pub struct SccGraph {
    pub order: Vec<BTreeSet<DefinitionId>>,
    pub depends_on: BTreeMap<DefinitionId, BTreeSet<DefinitionId>>,
    pub member_of: BTreeMap<DefinitionId, DefinitionId>,
}
Expand description

scc_graph’s output: the dependency-ordered component membership plus the condensation DAG’s adjacency, keyed by each component’s stable id — its own minimum member (FG-2, issue #631’s scc_membership() query; SccId is a plain DefinitionId in brink-db’s query layer, per the design doc’s “already the sort key in graph.rs” note).

PartialEq/Eq: the salsa cutoff for scc_membership_query — an edit that leaves the call graph’s SCC partition and condensation identical leaves this equal, so every solve_scc_query backdates.

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§order: Vec<BTreeSet<DefinitionId>>

Every component, in the same dependency order [topo_order] returns: a component appears after every other component it calls.

§depends_on: BTreeMap<DefinitionId, BTreeSet<DefinitionId>>

component id -> { other component ids it calls } — the condensation adjacency. solve_scc(S) reads solve_scc(T) for each T in depends_on[S]; the condensation is a DAG (SCCs are maximal by construction), so this recursion is always acyclic — no salsa cycles (Fork 1 ruling, design doc §8).

§member_of: BTreeMap<DefinitionId, DefinitionId>

def -> its component's id — the reverse index inferred_signature(def) / infer_body(def) use to find which solve_scc result to read.

Trait Implementations§

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impl Clone for SccGraph

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fn clone(&self) -> SccGraph

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for SccGraph

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl Default for SccGraph

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fn default() -> SccGraph

Returns the “default value” for a type. Read more
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impl Eq for SccGraph

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impl PartialEq for SccGraph

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fn eq(&self, other: &SccGraph) -> bool

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=. Read more
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impl StructuralPartialEq for SccGraph

Auto Trait Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
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fn borrow_mut(&mut self) -> &mut T

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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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impl<Q, K> Equivalent<K> for Q
where Q: Eq + ?Sized, K: Borrow<Q> + ?Sized,

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fn equivalent(&self, key: &K) -> bool

Compare self to key and return true if they are equal.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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Calls U::from(self).

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type Owned = T

The resulting type after obtaining ownership.
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Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

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type Error = !

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Performs the conversion.
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impl<T, U> TryInto<U> for T
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type Error = <U as TryFrom<T>>::Error

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where S: Into<Dispatch>,

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