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gyehoek-hs/test/Gyehoek/Test/Stack/VM.hs
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wip: abstract stack/continuation machine
2026-08-17 22:31:45 -06:00

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Haskell

module Gyehoek.Test.Stack.VM (root) where
import Test.Tasty (TestTree, testGroup)
import Test.Tasty.HUnit
import Gyehoek.Stack.Syntax
import Gyehoek.Stack.VM qualified as Sut
import Data.List (List)
import Control.Lens
import Data.Generics.Labels
root :: IO TestTree
root = pure . testGroup "stack machine" $
[ lit_int
, arith
]
evalsTo :: List Obj -> List Block -> Assertion
evalsTo rs bs = Sut.eval (MkProgram bs) @?= rs
lit_int = testCase "lit int" do
evalsTo [ObjImm (ImmInt 3)]
[ MkBlock "main" []
[ PopCont "ktail"
, CallReg "ktail" [ValImm (ImmInt 3)]
]
]
arith = testGroup "arith"
[ testCase "multipy" do
evalsTo [ObjImm (ImmInt 12)]
[ MkBlock "main" []
[ PopCont "ktail"
, Prim "x1" (PrimMul (ValImm $ ImmInt 3) (ValImm $ ImmInt 4))
, CallReg "ktail" [ValReg "x1"]
]
]
, testCase "subtract" do
evalsTo [ObjImm (ImmInt 14)]
[ MkBlock "main" []
[ PopCont "ktail"
, Prim "x1" (PrimSub (ValImm $ ImmInt 20) (ValImm $ ImmInt 6))
, CallReg "ktail" [ValReg "x1"]
]
]
]