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-rw-r--r--src/Parser/Statement.hs77
-rw-r--r--src/Run.hs42
-rw-r--r--src/Run/Monad.hs2
-rw-r--r--src/Test.hs44
4 files changed, 110 insertions, 55 deletions
diff --git a/src/Parser/Statement.hs b/src/Parser/Statement.hs
index a65227d..4bed1ef 100644
--- a/src/Parser/Statement.hs
+++ b/src/Parser/Statement.hs
@@ -12,6 +12,7 @@ import Data.Maybe
import Data.Set qualified as S
import Data.Text qualified as T
import Data.Typeable
+import Data.Void
import Text.Megaparsec hiding (State)
import Text.Megaparsec.Char
@@ -39,11 +40,10 @@ letStatement = do
addVarName off tname
void $ eol
body <- testBlock indent
- return $ Pure $ TestBlock [ Let line tname e body ]
+ return $ Let line tname e body
forStatement :: TestParser (Expr TestBlock)
forStatement = do
- line <- getSourceLine
ref <- L.indentLevel
wsymbol "for"
voff <- stateOffset <$> getParserState
@@ -63,7 +63,9 @@ forStatement = do
let tname = TypedVarName name
addVarName voff tname
body <- testBlock indent
- return $ Pure $ TestBlock [ For line tname (unpack <$> e) body ]
+ return $ (\xs f -> mconcat $ map f xs)
+ <$> (unpack <$> e)
+ <*> LambdaAbstraction tname body
exprStatement :: TestParser (Expr TestBlock)
exprStatement = do
@@ -102,6 +104,11 @@ class (Typeable a, Typeable (ParamRep a)) => ParamType a where
paramDefault :: proxy a -> TestParser (ParamRep a)
paramDefault _ = mzero
+ paramNewVariables :: proxy a -> ParamRep a -> NewVariables
+ paramNewVariables _ _ = NoNewVariables
+ paramNewVariablesEmpty :: proxy a -> NewVariables
+ paramNewVariablesEmpty _ = NoNewVariables -- to keep type info for optional parameters
+
paramFromSomeExpr :: proxy a -> SomeExpr -> Maybe (ParamRep a)
paramFromSomeExpr _ (SomeExpr e) = cast e
@@ -116,6 +123,8 @@ instance ParamType SourceLine where
instance ExprType a => ParamType (TypedVarName a) where
parseParam _ = newVarName
showParamType _ = "<variable>"
+ paramNewVariables _ var = SomeNewVariables [ var ]
+ paramNewVariablesEmpty _ = SomeNewVariables @a []
instance ExprType a => ParamType (Expr a) where
parseParam _ = do
@@ -129,6 +138,8 @@ instance ParamType a => ParamType [a] where
parseParam _ = listOf (parseParam @a Proxy)
showParamType _ = showParamType @a Proxy ++ " [, " ++ showParamType @a Proxy ++ " ...]"
paramDefault _ = return []
+ paramNewVariables _ = foldr (<>) (paramNewVariablesEmpty @a Proxy) . fmap (paramNewVariables @a Proxy)
+ paramNewVariablesEmpty _ = paramNewVariablesEmpty @a Proxy
paramFromSomeExpr _ se@(SomeExpr e) = cast e <|> ((:[]) <$> paramFromSomeExpr @a Proxy se)
paramExpr = sequenceA . fmap paramExpr
@@ -137,6 +148,8 @@ instance ParamType a => ParamType (Maybe a) where
parseParam _ = Just <$> parseParam @a Proxy
showParamType _ = showParamType @a Proxy
paramDefault _ = return Nothing
+ paramNewVariables _ = foldr (<>) (paramNewVariablesEmpty @a Proxy) . fmap (paramNewVariables @a Proxy)
+ paramNewVariablesEmpty _ = paramNewVariablesEmpty @a Proxy
paramFromSomeExpr _ se = Just <$> paramFromSomeExpr @a Proxy se
paramExpr = sequenceA . fmap paramExpr
@@ -161,6 +174,23 @@ instance ExprType a => ParamType (Traced a) where
data SomeParam f = forall a. ParamType a => SomeParam (Proxy a) (f (ParamRep a))
+data NewVariables
+ = NoNewVariables
+ | forall a. ExprType a => SomeNewVariables [ TypedVarName a ]
+
+instance Semigroup NewVariables where
+ NoNewVariables <> x = x
+ x <> NoNewVariables = x
+ SomeNewVariables (xs :: [ TypedVarName a ]) <> SomeNewVariables (ys :: [ TypedVarName b ])
+ | Just (Refl :: a :~: b) <- eqT = SomeNewVariables (xs <> ys)
+ | otherwise = error "new variables with different types"
+
+instance Monoid NewVariables where
+ mempty = NoNewVariables
+
+someParamVars :: Foldable f => SomeParam f -> NewVariables
+someParamVars (SomeParam proxy rep) = foldr (\x nvs -> paramNewVariables proxy x <> nvs) (paramNewVariablesEmpty proxy) rep
+
data CommandDef a = CommandDef [(String, SomeParam Proxy)] ([SomeParam Identity] -> Expr a)
instance Functor CommandDef where
@@ -197,21 +227,29 @@ paramOrContext name = fromParamOrContext <$> param name
cmdLine :: CommandDef SourceLine
cmdLine = param ""
-newtype InnerBlock = InnerBlock { fromInnerBlock :: TestBlock }
+newtype InnerBlock a = InnerBlock { fromInnerBlock :: [ a ] -> TestBlock }
-instance ParamType InnerBlock where
- type ParamRep InnerBlock = Expr TestBlock
+instance ExprType a => ParamType (InnerBlock a) where
+ type ParamRep (InnerBlock a) = ( [ TypedVarName a ], Expr TestBlock )
parseParam _ = mzero
showParamType _ = "<code block>"
- paramExpr = fmap InnerBlock
+ paramExpr ( vars, expr ) = fmap InnerBlock $ helper vars $ const <$> expr
+ where
+ helper :: ExprType a => [ TypedVarName a ] -> Expr ([ a ] -> b) -> Expr ([ a ] -> b)
+ helper ( v : vs ) = fmap combine . LambdaAbstraction v . helper vs
+ helper [] = id
+
+ combine f (x : xs) = f x xs
+ combine _ [] = error "inner block parameter count mismatch"
innerBlock :: CommandDef TestBlock
-innerBlock = fromInnerBlock <$> param ""
+innerBlock = ($ ([] :: [ Void ])) <$> innerBlockFun
+
+innerBlockFun :: ExprType a => CommandDef (a -> TestBlock)
+innerBlockFun = (\f x -> f [ x ]) <$> innerBlockFunList
-innerBlockExpr :: CommandDef (Expr TestBlock)
-innerBlockExpr =
- let CommandDef args fun = param ""
- in CommandDef args (Pure . fmap fromInnerBlock . fun)
+innerBlockFunList :: ExprType a => CommandDef ([ a ] -> TestBlock)
+innerBlockFunList = fromInnerBlock <$> param ""
newtype ExprParam a = ExprParam { fromExprParam :: a }
deriving (Functor, Foldable, Traversable)
@@ -236,10 +274,15 @@ command name (CommandDef types ctor) = do
restOfLine :: Pos -> [(Pos, [(String, SomeParam Maybe)])] -> SourceLine -> [(String, SomeParam Maybe)] -> TestParser (Expr TestBlock)
restOfLine cmdi partials line params = choice
[do void $ lookAhead eol
+ let definedVariables = mconcat $ map (someParamVars . snd) params
iparams <- forM params $ \case
(_, SomeParam (p :: Proxy p) Nothing)
| Just (Refl :: p :~: SourceLine) <- eqT -> return $ SomeParam p $ Identity line
- | Just (Refl :: p :~: InnerBlock) <- eqT -> SomeParam p . Identity <$> restOfParts cmdi partials
+
+ | SomeNewVariables (vars :: [ TypedVarName a ]) <- definedVariables
+ , Just (Refl :: p :~: InnerBlock a) <- eqT
+ -> SomeParam p . Identity . ( vars, ) <$> restOfParts cmdi partials
+
(sym, SomeParam p Nothing) -> choice
[ SomeParam p . Identity <$> paramDefault p
, fail $ "missing " ++ (if null sym then "" else "'" ++ sym ++ "' ") ++ showParamType p
@@ -321,19 +364,19 @@ testSubnet :: TestParser (Expr TestBlock)
testSubnet = command "subnet" $ Subnet
<$> param ""
<*> (fromExprParam <$> paramOrContext "of")
- <*> innerBlockExpr
+ <*> innerBlockFun
testNode :: TestParser (Expr TestBlock)
testNode = command "node" $ DeclNode
<$> param ""
<*> (fromExprParam <$> paramOrContext "on")
- <*> innerBlockExpr
+ <*> innerBlockFun
testSpawn :: TestParser (Expr TestBlock)
testSpawn = command "spawn" $ Spawn
<$> param "as"
<*> (bimap fromExprParam fromExprParam <$> paramOrContext "on")
- <*> innerBlockExpr
+ <*> innerBlockFun
testExpect :: TestParser (Expr TestBlock)
testExpect = command "expect" $ Expect
@@ -341,7 +384,7 @@ testExpect = command "expect" $ Expect
<*> (fromExprParam <$> paramOrContext "from")
<*> param ""
<*> param "capture"
- <*> innerBlockExpr
+ <*> innerBlockFunList
testDisconnectNode :: TestParser (Expr TestBlock)
testDisconnectNode = command "disconnect_node" $ DisconnectNode
diff --git a/src/Run.hs b/src/Run.hs
index f6eba39..b623f52 100644
--- a/src/Run.hs
+++ b/src/Run.hs
@@ -110,32 +110,13 @@ runTest out opts test variables = do
evalBlock :: TestBlock -> TestRun ()
evalBlock (TestBlock steps) = forM_ steps $ \case
- Let sline (TypedVarName name) expr inner -> do
- cur <- asks (lookup name . tsVars . snd)
- when (isJust cur) $ do
- outLine OutputError Nothing $ T.pack "variable '" `T.append` textVarName name `T.append` T.pack "' already exists on " `T.append` textSourceLine sline
- throwError Failed
- value <- eval expr
- withVar name value $ evalBlock =<< eval inner
-
- For sline (TypedVarName name) expr inner -> do
- cur <- asks (lookup name . tsVars . snd)
- when (isJust cur) $ do
- outLine OutputError Nothing $ T.pack "variable '" `T.append` textVarName name `T.append` T.pack "' already exists on " `T.append` textSourceLine sline
- throwError Failed
- value <- eval expr
- forM_ value $ \i -> do
- withVar name i $ evalBlock =<< eval inner
-
- Subnet name@(TypedVarName vname) parent inner -> do
- withSubnet parent (Just name) $ \net -> do
- withVar vname net $ evalBlock =<< eval inner
-
- DeclNode name@(TypedVarName vname) net inner -> do
- withNode net (Left name) $ \node -> do
- withVar vname node $ evalBlock =<< eval inner
-
- Spawn tvname@(TypedVarName vname@(VarName tname)) target inner -> do
+ Subnet name parent inner -> do
+ withSubnet parent (Just name) $ evalBlock . inner
+
+ DeclNode name net inner -> do
+ withNode net (Left name) $ evalBlock . inner
+
+ Spawn tvname@(TypedVarName (VarName tname)) target inner -> do
case target of
Left net -> withNode net (Right tvname) go
Right node -> go node
@@ -144,15 +125,14 @@ evalBlock (TestBlock steps) = forM_ steps $ \case
opts <- asks $ teOptions . fst
let pname = ProcName tname
tool = fromMaybe (optDefaultTool opts) (lookup pname $ optProcTools opts)
- withProcess (Right node) pname Nothing tool $ \p -> do
- withVar vname p $ evalBlock =<< eval inner
+ withProcess (Right node) pname Nothing tool $ evalBlock . inner
Send p line -> do
outProc OutputChildStdin p line
send p line
Expect line p expr captures inner -> do
- expect line p expr captures $ evalBlock =<< eval inner
+ expect line p expr captures $ evalBlock . inner
Flush p regex -> do
flush p regex
@@ -273,7 +253,7 @@ exprFailed desc sline pname exprVars = do
]
throwError Failed
-expect :: SourceLine -> Process -> Traced Regex -> [TypedVarName Text] -> TestRun () -> TestRun ()
+expect :: SourceLine -> Process -> Traced Regex -> [TypedVarName Text] -> ([ Text ] -> TestRun ()) -> TestRun ()
expect sline p (Traced trace re) tvars inner = do
timeout <- asks $ optTimeout . teOptions . fst
delay <- liftIO $ registerDelay $ ceiling $ 1000000 * timeout
@@ -299,7 +279,7 @@ expect sline p (Traced trace re) tvars inner = do
throwError Failed
outProc OutputMatch p line
- local (fmap $ \s -> s { tsVars = zip vars (map someConstValue capture) ++ tsVars s }) inner
+ inner capture
Nothing -> exprFailed (T.pack "expect") sline (Just $ procName p) trace
diff --git a/src/Run/Monad.hs b/src/Run/Monad.hs
index 2882197..f605dfb 100644
--- a/src/Run/Monad.hs
+++ b/src/Run/Monad.hs
@@ -91,7 +91,7 @@ instance MonadError Failed TestRun where
catchError (TestRun act) handler = TestRun $ catchError act $ fromTestRun . handler
instance MonadEval TestRun where
- lookupVar name = maybe (fail $ "variable not in scope: '" ++ unpackVarName name ++ "'") return =<< asks (lookup name . tsVars . snd)
+ askDictionary = asks (tsVars . snd)
withVar name value = local (fmap $ \s -> s { tsVars = ( name, someConstValue value ) : tsVars s })
instance MonadOutput TestRun where
diff --git a/src/Test.hs b/src/Test.hs
index 53e0f03..c69d5e1 100644
--- a/src/Test.hs
+++ b/src/Test.hs
@@ -31,6 +31,7 @@ module Test (
) where
import Control.Monad
+import Control.Monad.Reader
import Data.Char
import Data.List
@@ -41,6 +42,7 @@ import Data.String
import Data.Text (Text)
import Data.Text qualified as T
import Data.Typeable
+import Data.Void
import Text.Regex.TDFA qualified as RE
import Text.Regex.TDFA.Text qualified as RE
@@ -64,13 +66,11 @@ newtype TestBlock = TestBlock [ TestStep ]
deriving (Semigroup, Monoid)
data TestStep
- = forall a. ExprType a => Let SourceLine (TypedVarName a) (Expr a) (Expr TestBlock)
- | forall a. ExprType a => For SourceLine (TypedVarName a) (Expr [ a ]) (Expr TestBlock)
- | Subnet (TypedVarName Network) Network (Expr TestBlock)
- | DeclNode (TypedVarName Node) Network (Expr TestBlock)
- | Spawn (TypedVarName Process) (Either Network Node) (Expr TestBlock)
+ = Subnet (TypedVarName Network) Network (Network -> TestBlock)
+ | DeclNode (TypedVarName Node) Network (Node -> TestBlock)
+ | Spawn (TypedVarName Process) (Either Network Node) (Process -> TestBlock)
| Send Process Text
- | Expect SourceLine Process (Traced Regex) [ TypedVarName Text ] (Expr TestBlock)
+ | Expect SourceLine Process (Traced Regex) [ TypedVarName Text ] ([ Text ] -> TestBlock)
| Flush Process (Maybe Regex)
| Guard SourceLine EvalTrace Bool
| DisconnectNode Node TestBlock
@@ -89,9 +89,12 @@ textSourceLine SourceLineBuiltin = "<builtin>"
class MonadFail m => MonadEval m where
+ askDictionary :: m VariableDictionary
lookupVar :: VarName -> m SomeVarValue
+ lookupVar name = maybe (fail $ "variable not in scope: '" ++ unpackVarName name ++ "'") return . lookup name =<< askDictionary
withVar :: ExprType e => VarName -> e -> m a -> m a
+type VariableDictionary = [ ( VarName, SomeVarValue ) ]
newtype VarName = VarName Text
deriving (Eq, Ord, Show)
@@ -150,6 +153,10 @@ instance ExprType Regex where
textExprType _ = T.pack "regex"
textExprValue _ = T.pack "<regex>"
+instance ExprType Void where
+ textExprType _ = T.pack "void"
+ textExprValue _ = T.pack "<void>"
+
instance ExprType a => ExprType [a] where
textExprType _ = "[" <> textExprType @a Proxy <> "]"
textExprValue x = "[" <> T.intercalate ", " (map textExprValue x) <> "]"
@@ -251,11 +258,13 @@ data ExprEnumerator a = ExprEnumerator (a -> a -> [a]) (a -> a -> a -> [a])
data Expr a where
+ Let :: forall a b. ExprType b => SourceLine -> TypedVarName b -> Expr b -> Expr a -> Expr a
Variable :: ExprType a => SourceLine -> VarName -> Expr a
DynVariable :: TypeVar -> SourceLine -> VarName -> Expr DynamicType
FunVariable :: ExprType a => FunctionArguments SomeArgumentType -> SourceLine -> VarName -> Expr (FunctionType a)
ArgsApp :: FunctionArguments SomeExpr -> Expr (FunctionType a) -> Expr (FunctionType a)
FunctionEval :: Expr (FunctionType a) -> Expr a
+ LambdaAbstraction :: ExprType a => TypedVarName a -> Expr b -> Expr (a -> b)
Pure :: a -> Expr a
App :: AppAnnotation b -> Expr (a -> b) -> Expr a -> Expr b
Concat :: [Expr Text] -> Expr Text
@@ -282,8 +291,26 @@ instance Monoid a => Monoid (Expr a) where
varExpr :: ExprType a => SourceLine -> TypedVarName a -> Expr a
varExpr sline (TypedVarName name) = Variable sline name
+
+newtype SimpleEval a = SimpleEval (Reader VariableDictionary a)
+ deriving (Functor, Applicative, Monad)
+
+runSimpleEval :: SimpleEval a -> VariableDictionary -> a
+runSimpleEval (SimpleEval x) = runReader x
+
+instance MonadFail SimpleEval where
+ fail = error . ("eval failed: " <>)
+
+instance MonadEval SimpleEval where
+ askDictionary = SimpleEval ask
+ withVar name value (SimpleEval inner) = SimpleEval $ local (( name, someConstValue value ) : ) inner
+
+
eval :: forall m a. MonadEval m => Expr a -> m a
eval = \case
+ Let _ (TypedVarName name) valExpr expr -> do
+ val <- eval valExpr
+ withVar name val $ eval expr
Variable sline name -> fromSomeVarValue sline name =<< lookupVar name
DynVariable _ _ _ -> fail "ambiguous type"
FunVariable _ sline name -> funFromSomeVarValue sline name =<< lookupVar name
@@ -294,6 +321,9 @@ eval = \case
FunctionEval efun -> do
FunctionType fun <- eval efun
return $ fun mempty
+ LambdaAbstraction (TypedVarName name) expr -> do
+ dict <- askDictionary
+ return $ \x -> runSimpleEval (eval expr) (( name, someConstValue x ) : dict)
Pure value -> return value
App _ f x -> eval f <*> eval x
Concat xs -> T.concat <$> mapM eval xs
@@ -321,6 +351,7 @@ gatherVars = fmap (uniqOn fst . sortOn fst) . helper
where
helper :: forall b. Expr b -> m EvalTrace
helper = \case
+ Let _ (TypedVarName var) _ expr -> filter ((var /=) . fst . fst) <$> helper expr
Variable _ var
| isInternalVar var -> return []
| otherwise -> (: []) . (( var, [] ), ) <$> lookupVar var
@@ -331,6 +362,7 @@ gatherVars = fmap (uniqOn fst . sortOn fst) . helper
vs <- mapM (\(SomeExpr e) -> helper e) $ M.elems args
return $ concat (v : vs)
FunctionEval efun -> helper efun
+ LambdaAbstraction (TypedVarName var) expr -> filter ((var /=) . fst . fst) <$> helper expr
Pure _ -> return []
e@(App (AnnRecord sel) _ x)
| Just (var, sels) <- gatherSelectors x
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 12:13:54 +0000