From 7f35daac6a9b0c4e286f5b4bfc7010f074b52b57 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Roman=20Smr=C5=BE?= <roman.smrz@seznam.cz>
Date: Sat, 3 Aug 2024 21:36:47 +0200
Subject: Test block expression type and statement

---
 src/Run.hs  | 4 ++++
 src/Test.hs | 9 +++++++++
 2 files changed, 13 insertions(+)

diff --git a/src/Run.hs b/src/Run.hs
index a40641b..a69ba75 100644
--- a/src/Run.hs
+++ b/src/Run.hs
@@ -121,6 +121,10 @@ evalSteps = mapM_ $ \case
         forM_ value $ \i -> do
             withVar name i $ evalSteps inner
 
+    ExprStatement expr -> do
+        TestBlock steps <- eval expr
+        evalSteps steps
+
     Subnet name@(TypedVarName vname) parentExpr inner -> do
         parent <- eval parentExpr
         withSubnet parent (Just name) $ \net -> do
diff --git a/src/Test.hs b/src/Test.hs
index 7f698a2..a54bbbd 100644
--- a/src/Test.hs
+++ b/src/Test.hs
@@ -2,6 +2,7 @@ module Test (
     Module(..),
     Test(..),
     TestStep(..),
+    TestBlock(..),
     SourceLine(..),
 
     MonadEval(..),
@@ -41,8 +42,11 @@ data Test = Test
     , testSteps :: [TestStep]
     }
 
+newtype TestBlock = TestBlock [ TestStep ]
+
 data TestStep = forall a. ExprType a => Let SourceLine (TypedVarName a) (Expr a) [TestStep]
               | forall a. ExprType a => For SourceLine (TypedVarName a) (Expr [a]) [TestStep]
+              | ExprStatement (Expr TestBlock)
               | Subnet (TypedVarName Network) (Expr Network) [TestStep]
               | DeclNode (TypedVarName Node) (Expr Network) [TestStep]
               | Spawn (TypedVarName Process) (Either (Expr Network) (Expr Node)) [TestStep]
@@ -126,6 +130,11 @@ instance ExprType a => ExprType [a] where
 
     exprListUnpacker _ = Just $ ExprListUnpacker id (const Proxy)
 
+instance ExprType TestBlock where
+    textExprType _ = "test block"
+    textExprValue _ = "<test block>"
+    emptyVarValue = TestBlock []
+
 data SomeVarValue = forall a. ExprType a => SomeVarValue a
 
 data RecordSelector a = forall b. ExprType b => RecordSelector (a -> b)
-- 
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