T1169

.github/ci.sh

@@ -39,7 +39,7 @@ retry() {
 
 setup_external_tools() {
   is_exe "$BIN" "test-runner" && return
-  cabal v2-install --install-method=copy --installdir="$BIN" test-lib
+  cabal v2-install --install-method=copy --installdir="$BIN" test-lib-0.3
 }
 
 setup_dist_bins() {

cabal.GHC-8.10.2.config

@@ -183,7 +183,7 @@ constraints: any.Cabal ==3.2.0.0,
              any.test-framework ==0.8.2.0,
              any.test-framework-hunit ==0.3.0.2,
              test-framework-hunit -base3 +base4,
-             any.test-lib ==0.2.2,
+             any.test-lib ==0.3,
              any.text ==1.2.4.1,
              any.text-short ==0.1.3,
              text-short -asserts,

cabal.GHC-8.10.3.config

@@ -223,7 +223,7 @@ constraints: any.Cabal ==3.2.1.0,
              any.test-framework ==0.8.2.0,
              any.test-framework-hunit ==0.3.0.2,
              test-framework-hunit -base3 +base4,
-             any.test-lib ==0.2.2,
+             any.test-lib ==0.3,
              any.text ==1.2.4.1,
              any.text-short ==0.1.3,
              text-short -asserts,

cabal.GHC-8.6.5.config

@@ -184,7 +184,7 @@ constraints: any.Cabal ==2.4.0.1,
              any.test-framework ==0.8.2.0,
              any.test-framework-hunit ==0.3.0.2,
              test-framework-hunit -base3 +base4,
-             any.test-lib ==0.2.1,
+             any.test-lib ==0.3,
              any.text ==1.2.4.0,
              any.tf-random ==0.5,
              any.th-abstraction ==0.3.2.0,

cabal.GHC-8.8.4.config

@@ -181,7 +181,7 @@ constraints: any.Cabal ==3.0.1.0,
              any.test-framework ==0.8.2.0,
              any.test-framework-hunit ==0.3.0.2,
              test-framework-hunit -base3 +base4,
-             any.test-lib ==0.2.1,
+             any.test-lib ==0.3,
              any.text ==1.2.4.0,
              any.tf-random ==0.5,
              any.th-abstraction ==0.3.2.0,

cry

@@ -8,7 +8,7 @@ QUICKTESTS="tests/issues tests/modsys tests/mono-binds tests/parser tests/regres
 
 function setup_external_tools() {
   [[ -x "$BIN/test-runner" || -x "$BIN/test-runner.exe" ]] && return
-  cabal v2-install --install-method=copy --installdir="$BIN" test-lib
+  cabal v2-install --install-method=copy --installdir="$BIN" test-lib-0.3
 }
 
 function show_usage() {

src/Cryptol/ModuleSystem/NamingEnv.hs

@@ -16,6 +16,7 @@
 {-# LANGUAGE PatternGuards #-}
 {-# LANGUAGE RecordWildCards #-}
 {-# LANGUAGE BlockArguments #-}
+{-# LANGUAGE OverloadedStrings #-}
 module Cryptol.ModuleSystem.NamingEnv where
 
 import Data.List (nub)
@@ -106,6 +107,11 @@ merge :: [Name] -> [Name] -> [Name]
 merge xs ys | xs == ys  = xs
             | otherwise = nub (xs ++ ys)
 
+instance PP NamingEnv where
+  ppPrec _ (NamingEnv mps)   = vcat $ map ppNS $ Map.toList mps
+    where ppNS (ns,xs) = pp ns $$ nest 2 (vcat (map ppNm (Map.toList xs)))
+          ppNm (x,as)  = pp x <+> "->" <+> hsep (punctuate comma (map pp as))
+
 -- | Generate a mapping from 'PrimIdent' to 'Name' for a
 -- given naming environment.
 toPrimMap :: NamingEnv -> PrimMap

src/Cryptol/ModuleSystem/Renamer.hs

@@ -161,8 +161,10 @@ renameModule' thisNested env mpath m =
          allImps   = openLoop allNested env openDs imps
 
      (inScope,decls') <-
-        shadowNames allImps $
+        shadowNames' CheckNone allImps $
         shadowNames' CheckOverlap env $
+                          -- maybe we should allow for a warning
+                          -- if a local name shadows an imported one?
         do inScope <- getNamingEnv
            ds      <- renameTopDecls' (allNested,mpath) (mDecls m)
            pure (inScope, ds)

src/Cryptol/ModuleSystem/Renamer/Monad.hs

@@ -250,10 +250,16 @@ checkEnv check (NamingEnv lenv) r rw0
 
   where
   newEnv         = NamingEnv newMap
-  (rwFin,newMap) = Map.mapAccumWithKey doNS rw0 lenv
+  (rwFin,newMap) = Map.mapAccumWithKey doNS rw0 lenv  -- lenv 1 ns at a time
   doNS rw ns     = Map.mapAccumWithKey (step ns) rw
 
-  step ns acc k xs = (acc', [head xs])
+  -- namespace, current state, k : parse name, xs : possible entities for k
+  step ns acc k xs = (acc', case check of
+                              CheckNone -> xs
+                              _         -> [head xs]
+                              -- we've already reported an overlap error,
+                              -- so resolve arbitrarily to  the first entry
+                      )
     where
     acc' = acc
       { rwWarnings =

tests/cryptol-test-runner.cabal

@@ -16,7 +16,7 @@ flag static
 
 executable cryptol-test-runner
   Main-is:             Main.hs
-  build-depends:       base,filepath,test-lib
+  build-depends:       base,filepath,test-lib >= 0.3
   GHC-options:         -Wall -O2
   Default-language:    Haskell2010
 

tests/modsys/T15.icry

@@ -0,0 +1 @@
+:module T15::B

tests/modsys/T15.icry.stdout

@@ -0,0 +1,4 @@
+Loading module Cryptol
+Loading module Cryptol
+Loading module T15::A
+Loading module T15::B

tests/modsys/T15/A.cry

@@ -0,0 +1,5 @@
+module T15::A where
+
+update = 0x02
+
+

tests/modsys/T15/B.cry

@@ -0,0 +1,3 @@
+module T15::B where
+
+import T15::A

tests/modsys/T16.icry

@@ -0,0 +1 @@
+:module T16::B

tests/modsys/T16.icry.stdout

@@ -0,0 +1,9 @@
+Loading module Cryptol
+Loading module Cryptol
+Loading module T16::A
+Loading module T16::B
+
+[error] at ./T16/B.cry:5:5--5:11
+    Multiple definitions for symbol: update
+    (at Cryptol:844:11--844:17, update)
+    (at ./T16/A.cry:3:1--3:7, T16::A::update)

tests/modsys/T16.icry.stdout.win32

@@ -0,0 +1,9 @@
+Loading module Cryptol
+Loading module Cryptol
+Loading module T16::A
+Loading module T16::B
+
+[error] at .\T16\B.cry:5:5--5:11
+    Multiple definitions for symbol: update
+    (at Cryptol:844:11--844:17, update)
+    (at .\T16\A.cry:3:1--3:7, T16::A::update)

tests/modsys/T16/A.cry

@@ -0,0 +1,5 @@
+module T16::A where
+
+update = 0x02
+
+

tests/modsys/T16/B.cry

@@ -0,0 +1,5 @@
+module T16::B where
+
+import T16::A
+
+f = update

tests/modsys/T17.icry

@@ -0,0 +1 @@
+:module T17::B

tests/modsys/T17.icry.stdout

@@ -0,0 +1,5 @@
+Loading module Cryptol
+Loading module Cryptol
+Loading module T17::A
+Loading module T17::A1
+Loading module T17::B

tests/modsys/T17/A.cry

@@ -0,0 +1,5 @@
+module T17::A where
+
+u = 0x02
+
+

tests/modsys/T17/A1.cry

@@ -0,0 +1,5 @@
+module T17::A1 where
+
+u = 0x03
+
+

tests/modsys/T17/B.cry

@@ -0,0 +1,4 @@
+module T17::B where
+
+import T17::A
+import T17::A1

tests/modsys/T18.icry

@@ -0,0 +1 @@
+:module T18::B

tests/modsys/T18.icry.stdout

@@ -0,0 +1,10 @@
+Loading module Cryptol
+Loading module Cryptol
+Loading module T18::A
+Loading module T18::A1
+Loading module T18::B
+
+[error] at ./T18/B.cry:6:5--6:6
+    Multiple definitions for symbol: u
+    (at ./T18/A.cry:3:1--3:2, T18::A::u)
+    (at ./T18/A1.cry:3:1--3:2, T18::A1::u)

tests/modsys/T18.icry.stdout.win32

@@ -0,0 +1,10 @@
+Loading module Cryptol
+Loading module Cryptol
+Loading module T18::A
+Loading module T18::A1
+Loading module T18::B
+
+[error] at .\T18\B.cry:6:5--6:6
+    Multiple definitions for symbol: u
+    (at .\T18\A.cry:3:1--3:2, T18::A::u)
+    (at .\T18\A1.cry:3:1--3:2, T18::A1::u)

tests/modsys/T18/A.cry

@@ -0,0 +1,5 @@
+module T18::A where
+
+u = 0x02
+
+

tests/modsys/T18/A1.cry

@@ -0,0 +1,5 @@
+module T18::A1 where
+
+u = 0x03
+
+

tests/modsys/T18/B.cry

@@ -0,0 +1,6 @@
+module T18::B where
+
+import T18::A
+import T18::A1
+
+f = u

tests/modsys/nested/T15.icry.stdout

@@ -1,15 +1,6 @@
 Loading module Cryptol
 Loading module Cryptol
 Loading module T15
-[warning] at T15.cry:5:13--5:14
-    This binding for `A` shadows the existing binding at
-    T15.cry:3:11--3:12
-[warning] at T15.cry:7:15--7:16
-    This binding for `A` shadows the existing binding at
-    T15.cry:5:13--5:14
-[warning] at T15.cry:7:15--7:16
-    This binding for `A::A` shadows the existing binding at
-    T15.cry:5:13--5:14
 Showing a specific instance of polymorphic result:
   * Using 'Integer' for 1st type argument of 'T15::A::A::y'
 2