simple ffi with rust and haskell

so far, only calling rust from haskell, not the other way round.

2 files changed, 24 insertions, 0 deletions

diff --git a/rusty-haskell/haskell/src/FLib.hs b/rusty-haskell/haskell/src/FLib.hs
new file mode 100644
index 0000000..7fc1d61
--- /dev/null
+++ b/rusty-haskell/haskell/src/FLib.hs
@@ -0,0 +1,8 @@
+module FLib where
+
+import Foreign.C.Types
+import Foreign.C.String
+
+foreign import ccall "double_input" doubleInput :: CInt -> CInt
+--foreign import ccall unsafe "print_string" printString :: CString -> IO ()
+foreign import ccall "print_hello" printHello :: IO ()
diff --git a/rusty-haskell/haskell/src/Main.hs b/rusty-haskell/haskell/src/Main.hs
new file mode 100644
index 0000000..2c6a7ae
--- /dev/null
+++ b/rusty-haskell/haskell/src/Main.hs
@@ -0,0 +1,16 @@
+module Main where
+
+
+import Foreign.C.Types
+import Foreign.C.String
+
+foreign import ccall "double_input" doubleInput :: CInt -> CInt
+--foreign import ccall unsafe "print_string" printString :: CString -> IO ()
+foreign import ccall "print_hello" printHello :: IO ()
+
+
+main :: IO ()
+main = do
+  let b = doubleInput 2
+  printHello
+  putStrLn $ show b