From ec70387a4cac131f34847c94e9fe7de66acc241e Mon Sep 17 00:00:00 2001
From: Florian Diebold <florian.diebold@freiheit.com>
Date: Fri, 12 Mar 2021 19:12:17 +0100
Subject: Use Chalk Environment more directly

---
 crates/hir_ty/src/traits/chalk.rs         |  4 ++--
 crates/hir_ty/src/traits/chalk/mapping.rs | 38 ++++---------------------------
 2 files changed, 7 insertions(+), 35 deletions(-)

(limited to 'crates/hir_ty/src/traits')

diff --git a/crates/hir_ty/src/traits/chalk.rs b/crates/hir_ty/src/traits/chalk.rs
index 565672b6b..4e7d43f7e 100644
--- a/crates/hir_ty/src/traits/chalk.rs
+++ b/crates/hir_ty/src/traits/chalk.rs
@@ -33,13 +33,13 @@ pub(super) mod tls;
 mod interner;
 mod mapping;
 
-pub(super) trait ToChalk {
+pub(crate) trait ToChalk {
     type Chalk;
     fn to_chalk(self, db: &dyn HirDatabase) -> Self::Chalk;
     fn from_chalk(db: &dyn HirDatabase, chalk: Self::Chalk) -> Self;
 }
 
-pub(super) fn from_chalk<T, ChalkT>(db: &dyn HirDatabase, chalk: ChalkT) -> T
+pub(crate) fn from_chalk<T, ChalkT>(db: &dyn HirDatabase, chalk: ChalkT) -> T
 where
     T: ToChalk<Chalk = ChalkT>,
 {
diff --git a/crates/hir_ty/src/traits/chalk/mapping.rs b/crates/hir_ty/src/traits/chalk/mapping.rs
index 3a08b67e9..b0415e8b0 100644
--- a/crates/hir_ty/src/traits/chalk/mapping.rs
+++ b/crates/hir_ty/src/traits/chalk/mapping.rs
@@ -17,7 +17,7 @@ use crate::{
     primitive::UintTy,
     traits::{Canonical, Obligation},
     AliasTy, CallableDefId, FnPointer, FnSig, GenericPredicate, InEnvironment, OpaqueTy,
-    OpaqueTyId, ProjectionPredicate, ProjectionTy, Scalar, Substs, TraitEnvironment, TraitRef, Ty,
+    OpaqueTyId, ProjectionPredicate, ProjectionTy, Scalar, Substs, TraitRef, Ty,
 };
 
 use super::interner::*;
@@ -536,31 +536,6 @@ where
     }
 }
 
-impl ToChalk for Arc<TraitEnvironment> {
-    type Chalk = chalk_ir::Environment<Interner>;
-
-    fn to_chalk(self, db: &dyn HirDatabase) -> chalk_ir::Environment<Interner> {
-        let mut clauses = Vec::new();
-        for pred in &self.predicates {
-            if pred.is_error() {
-                // for env, we just ignore errors
-                continue;
-            }
-            let program_clause: chalk_ir::ProgramClause<Interner> =
-                pred.clone().to_chalk(db).cast(&Interner);
-            clauses.push(program_clause.into_from_env_clause(&Interner));
-        }
-        chalk_ir::Environment::new(&Interner).add_clauses(&Interner, clauses)
-    }
-
-    fn from_chalk(
-        _db: &dyn HirDatabase,
-        _env: chalk_ir::Environment<Interner>,
-    ) -> Arc<TraitEnvironment> {
-        unimplemented!()
-    }
-}
-
 impl<T: ToChalk> ToChalk for InEnvironment<T>
 where
     T::Chalk: chalk_ir::interner::HasInterner<Interner = Interner>,
@@ -569,19 +544,16 @@ where
 
     fn to_chalk(self, db: &dyn HirDatabase) -> chalk_ir::InEnvironment<T::Chalk> {
         chalk_ir::InEnvironment {
-            environment: self.environment.to_chalk(db),
+            environment: self.environment.env.clone(),
             goal: self.value.to_chalk(db),
         }
     }
 
     fn from_chalk(
-        db: &dyn HirDatabase,
-        in_env: chalk_ir::InEnvironment<T::Chalk>,
+        _db: &dyn HirDatabase,
+        _in_env: chalk_ir::InEnvironment<T::Chalk>,
     ) -> InEnvironment<T> {
-        InEnvironment {
-            environment: from_chalk(db, in_env.environment),
-            value: from_chalk(db, in_env.goal),
-        }
+        unimplemented!()
     }
 }
 
-- 
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