Remove mono-related changes for now

compiler/can/src/abilities.rs

@@ -46,6 +46,7 @@ impl AbilityMemberData {
     }
 }
 
+/// (member, specialization type) -> specialization
 pub type SolvedSpecializations = VecMap<(Symbol, Symbol), MemberSpecialization>;
 
 /// A particular specialization of an ability member.

compiler/load_internal/src/file.rs

@@ -136,7 +136,6 @@ struct ModuleCache<'a> {
     /// Various information
     imports: MutMap<ModuleId, MutSet<ModuleId>>,
     top_level_thunks: MutMap<ModuleId, MutSet<Symbol>>,
-    ability_specializations: MutMap<ModuleId, VecMap<Symbol, PartialProc<'a>>>,
     documentation: MutMap<ModuleId, ModuleDocumentation>,
     can_problems: MutMap<ModuleId, Vec<roc_problem::can::Problem>>,
     type_problems: MutMap<ModuleId, Vec<solve::TypeError>>,
@@ -182,7 +181,6 @@ impl Default for ModuleCache<'_> {
             external_specializations_requested: Default::default(),
             imports: Default::default(),
             top_level_thunks: Default::default(),
-            ability_specializations: Default::default(),
             documentation: Default::default(),
             can_problems: Default::default(),
             type_problems: Default::default(),
@@ -439,40 +437,12 @@ fn start_phase<'a>(
                     module_id,
                     ident_ids,
                     subs,
-                    mut procs_base,
+                    procs_base,
                     layout_cache,
                     module_timing,
-                    mut abilities_store,
+                    abilities_store,
                 } = found_specializations;
 
-                // At this point, we know what specializations our dependents want and what
-                // ability specializations our dependencies have. But we also need to know what
-                // ability specializations our dependents have, because those might be used by the
-                // specializations we've been asked to make.
-                for (_module_id, exposed_types) in state.exposed_types.iter_all() {
-                    let ExposedModuleTypes {
-                        solved_specializations,
-                        ..
-                    } = exposed_types;
-                    for (&(member, typ), &specialization) in solved_specializations.iter() {
-                        match abilities_store.get_specialization(member, typ) {
-                            None => abilities_store.register_specialization_for_type(
-                                member,
-                                typ,
-                                specialization,
-                            ),
-                            Some(existing) => debug_assert_eq!(existing, specialization),
-                        }
-                    }
-                }
-                for (_, ability_specializations) in
-                    state.module_cache.ability_specializations.iter()
-                {
-                    procs_base
-                        .partial_procs
-                        .extend(ability_specializations.iter().map(|(s, p)| (*s, p.clone())));
-                }
-
                 BuildTask::MakeSpecializations {
                     module_id,
                     ident_ids,
@@ -2217,30 +2187,6 @@ fn update<'a>(
                 .or_default()
                 .extend(procs_base.module_thunks.iter().copied());
 
-            let ability_specialization_procs: VecMap<_, _> = state
-                .exposed_types
-                .get(&module_id)
-                .expect("Module solved, but no exposed types")
-                .solved_specializations
-                .iter()
-                .map(|(_, specialization)| {
-                    (
-                        specialization.symbol,
-                        procs_base
-                            .partial_procs
-                            .get(&specialization.symbol)
-                            .expect("Specialization known, but not exposed")
-                            .clone(),
-                    )
-                })
-                .collect();
-
-            let old = state
-                .module_cache
-                .ability_specializations
-                .insert(module_id, ability_specialization_procs);
-            debug_assert!(old.is_none(), "Found specializations for module twice");
-
             let found_specializations_module = FoundSpecializationsModule {
                 module_id,
                 ident_ids,
@@ -3686,19 +3632,6 @@ fn run_solve_solve(
 
     let mut subs = Subs::new_from_varstore(var_store);
 
-    // We don't know what types we're about to solve for in our module, so we need to include the
-    // solved abilities across all dependencies.
-    // TODO: there's got to be a better way to do this. Maybe keep a cache of module -> solved
-    // abilities?
-    // let mut exposed_for_module = exposed_for_module;
-    // let mut imported_modules = VecSet::with_capacity(2);
-    // for imported in exposed_for_module.imported_values.iter() {
-    //     imported_modules.insert(imported.module_id());
-    // }
-    // for module in imported_modules.into_iter() {
-    //     let typechecked =
-    // }
-
     let import_variables = add_imports(
         &mut subs,
         &mut abilities_store,
@@ -3726,8 +3659,8 @@ fn run_solve_solve(
             abilities_store,
         );
 
-        // STORE ABILITIES
         let module_id = module.module_id;
+        // Figure out what specializations belong to this module
         let solved_specializations: SolvedSpecializations = abilities_store
             .iter_specializations()
             .filter(|((member, typ), _)| {
@@ -3737,17 +3670,14 @@ fn run_solve_solve(
             })
             .collect();
 
-        let specialization_symbols: VecSet<_> = solved_specializations
+        let is_specialization_symbol =
-            .values()
+            |sym| solved_specializations.values().any(|ms| ms.symbol == sym);
-            .map(|ms| ms.symbol)
-            .collect();
-        // END STORE ABILITIES
 
         // Expose anything that is explicitly exposed by the header, or is a specialization of an
         // ability.
         let exposed_vars_by_symbol: Vec<_> = solved_env
             .vars_by_symbol()
-            .filter(|(k, _)| exposed_symbols.contains(k) || specialization_symbols.contains(k))
+            .filter(|(k, _)| exposed_symbols.contains(k) || is_specialization_symbol(*k))
             .collect();
 
         (
@@ -3803,11 +3733,11 @@ fn run_solve<'a>(
                 Some((subs, exposed_vars_by_symbol)) => {
                     (
                         Solved(subs),
-                        // TODO(abilities) replace when we have abilities for builtins
+                        // TODO(abilities) cache abilities for builtins
                         VecMap::default(),
                         exposed_vars_by_symbol.to_vec(),
                         vec![],
-                        // TODO(abilities) replace when we have abilities for builtins
+                        // TODO(abilities) cache abilities for builtins
                         AbilitiesStore::default(),
                     )
                 }

compiler/mono/src/ir.rs

@@ -16,7 +16,6 @@ use roc_debug_flags::dbg_do;
 use roc_debug_flags::{
     ROC_PRINT_IR_AFTER_REFCOUNT, ROC_PRINT_IR_AFTER_RESET_REUSE, ROC_PRINT_IR_AFTER_SPECIALIZATION,
 };
-use roc_error_macros::internal_error;
 use roc_exhaustive::{Ctor, CtorName, Guard, RenderAs, TagId};
 use roc_module::ident::{ForeignSymbol, Lowercase, TagName};
 use roc_module::low_level::LowLevel;
@@ -2784,13 +2783,14 @@ fn resolve_abilities_in_specialized_body<'a>(
     use roc_can::traverse::{walk_expr, Visitor};
     use roc_unify::unify::unify;
 
-    struct Resolver<'b, 'a, 'i> {
+    struct Resolver<'a> {
-        env: &'b mut Env<'a, 'i>,
+        subs: &'a mut Subs,
-        procs: &'b Procs<'a>,
+        procs: &'a Procs<'a>,
+        abilities_store: &'a mut AbilitiesStore,
         seen_defs: MutSet<Symbol>,
         specialized: std::vec::Vec<SpecializationId>,
     }
-    impl Visitor for Resolver<'_, '_, '_> {
+    impl Visitor for Resolver<'_> {
         fn visit_expr(&mut self, expr: &Expr, _region: Region, var: Variable) {
             match expr {
                 Expr::Closure(..) => {
@@ -2806,7 +2806,6 @@ fn resolve_abilities_in_specialized_body<'a>(
                 }
                 Expr::AbilityMember(member_sym, specialization_id, _specialization_var) => {
                     let (specialization, specialization_def) = match self
-                        .env
                         .abilities_store
                         .get_resolved(*specialization_id)
                     {
@@ -2818,29 +2817,21 @@ fn resolve_abilities_in_specialized_body<'a>(
                             //
                             // However, we do need to walk the specialization def, because it may
                             // itself contain unspecialized defs.
-                            if !self.env.is_imported_symbol(specialization) {
+                            self.procs
-                                let def = self
-                                    .procs
                                 .partial_procs
                                 .get_symbol(specialization)
-                                    .expect("Specialization found, but it's not in procs");
+                                .expect("Specialization found, but it's not in procs"),
-
-                                Some(def)
-                            } else {
-                                None
-                            },
                         ),
                         None => {
                             let specialization = resolve_ability_specialization(
-                                self.env.subs,
+                                self.subs,
-                                self.env.abilities_store,
+                                self.abilities_store,
                                 *member_sym,
                                 var,
                             )
-                            .unwrap_or_else(|| internal_error!("Specialization for {:?} is unknown - code generation cannot proceed!", member_sym));
+                            .expect("Ability specialization is unknown - code generation cannot proceed!");
 
-                            self.env
+                            self.abilities_store
-                                .abilities_store
                                 .insert_resolved(*specialization_id, specialization);
 
                             debug_assert!(!self.specialized.contains(specialization_id));
@@ -2850,51 +2841,42 @@ fn resolve_abilities_in_specialized_body<'a>(
                             // since `var` may only have partial specialization information - enough to
                             // figure out what specialization we need, but not the types of all arguments
                             // and return types. So, unify with the variable with the specialization's type.
-                            // let specialization_def = if !self.env.is_imported_symbol(specialization)
-                            // {
                             let specialization_def = self
                                 .procs
                                 .partial_procs
                                 .get_symbol(specialization)
-                                .unwrap_or_else(|| {
+                                .expect("Specialization found, but it's not in procs");
-                                    internal_error!(
-                                        "Specialization for {:?} found, but it's not in procs",
-                                        specialization
-                                    )
-                                });
                             let specialization_var = specialization_def.annotation;
 
-                            let unified = unify(self.env.subs, var, specialization_var, Mode::EQ);
+                            let unified = unify(self.subs, var, specialization_var, Mode::EQ);
                             unified.expect_success(
                                 "Specialization does not unify - this is a typechecker bug!",
                             );
 
-                            let specialization_def = Some(specialization_def);
-                            // } else {
-                            //     None
-                            // };
-
                             (specialization, specialization_def)
                         }
                     };
 
                     // Now walk the specialization def to pick up any more needed types. Of course,
                     // we only want to pass through it once to avoid unbounded recursion.
-                    if let Some(def) = specialization_def {
                     if !self.seen_defs.contains(&specialization) {
-                            self.visit_expr(&def.body, Region::zero(), def.body_var);
+                        self.visit_expr(
+                            &specialization_def.body,
+                            Region::zero(),
+                            specialization_def.body_var,
+                        );
                         self.seen_defs.insert(specialization);
                     }
                 }
-                }
                 _ => walk_expr(self, expr, var),
             }
         }
     }
 
     let mut resolver = Resolver {
-        env,
+        subs: env.subs,
         procs,
+        abilities_store: env.abilities_store,
         seen_defs: MutSet::default(),
         specialized: vec![],
     };