mv compiler to compiler/

compiler/rustc_query_system/src/dep_graph/mod.rs

@@ -0,0 +1,85 @@
+pub mod debug;
+mod dep_node;
+mod graph;
+mod prev;
+mod query;
+mod serialized;
+
+pub use dep_node::{DepNode, DepNodeParams, WorkProductId};
+pub use graph::{hash_result, DepGraph, DepNodeColor, DepNodeIndex, TaskDeps, WorkProduct};
+pub use prev::PreviousDepGraph;
+pub use query::DepGraphQuery;
+pub use serialized::{SerializedDepGraph, SerializedDepNodeIndex};
+
+use rustc_data_structures::profiling::SelfProfilerRef;
+use rustc_data_structures::sync::Lock;
+use rustc_data_structures::thin_vec::ThinVec;
+use rustc_errors::Diagnostic;
+
+use std::fmt;
+use std::hash::Hash;
+
+pub trait DepContext: Copy {
+    type DepKind: self::DepKind;
+    type StableHashingContext;
+
+    /// Create a hashing context for hashing new results.
+    fn create_stable_hashing_context(&self) -> Self::StableHashingContext;
+
+    fn debug_dep_tasks(&self) -> bool;
+    fn debug_dep_node(&self) -> bool;
+
+    /// Try to force a dep node to execute and see if it's green.
+    fn try_force_from_dep_node(&self, dep_node: &DepNode<Self::DepKind>) -> bool;
+
+    /// Return whether the current session is tainted by errors.
+    fn has_errors_or_delayed_span_bugs(&self) -> bool;
+
+    /// Return the diagnostic handler.
+    fn diagnostic(&self) -> &rustc_errors::Handler;
+
+    /// Load data from the on-disk cache.
+    fn try_load_from_on_disk_cache(&self, dep_node: &DepNode<Self::DepKind>);
+
+    /// Load diagnostics associated to the node in the previous session.
+    fn load_diagnostics(&self, prev_dep_node_index: SerializedDepNodeIndex) -> Vec<Diagnostic>;
+
+    /// Register diagnostics for the given node, for use in next session.
+    fn store_diagnostics(&self, dep_node_index: DepNodeIndex, diagnostics: ThinVec<Diagnostic>);
+
+    /// Register diagnostics for the given node, for use in next session.
+    fn store_diagnostics_for_anon_node(
+        &self,
+        dep_node_index: DepNodeIndex,
+        diagnostics: ThinVec<Diagnostic>,
+    );
+
+    /// Access the profiler.
+    fn profiler(&self) -> &SelfProfilerRef;
+}
+
+/// Describe the different families of dependency nodes.
+pub trait DepKind: Copy + fmt::Debug + Eq + Ord + Hash {
+    const NULL: Self;
+
+    /// Return whether this kind always require evaluation.
+    fn is_eval_always(&self) -> bool;
+
+    /// Return whether this kind requires additional parameters to be executed.
+    fn has_params(&self) -> bool;
+
+    /// Implementation of `std::fmt::Debug` for `DepNode`.
+    fn debug_node(node: &DepNode<Self>, f: &mut fmt::Formatter<'_>) -> fmt::Result;
+
+    /// Execute the operation with provided dependencies.
+    fn with_deps<OP, R>(deps: Option<&Lock<TaskDeps<Self>>>, op: OP) -> R
+    where
+        OP: FnOnce() -> R;
+
+    /// Access dependencies from current implicit context.
+    fn read_deps<OP>(op: OP)
+    where
+        OP: for<'a> FnOnce(Option<&'a Lock<TaskDeps<Self>>>);
+
+    fn can_reconstruct_query_key(&self) -> bool;
+}