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{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE QuasiQuotes #-}
{-# LANGUAGE ForeignFunctionInterface #-}
{-# LANGUAGE OverloadedStrings #-}
import Control.Monad (void)
import Data.Monoid ((<>))
import qualified Data.Vector.Storable.Mutable as V
import Foreign.C.Types
import Foreign.ForeignPtr (mallocForeignPtrBytes)
import Foreign.ForeignPtr.Unsafe (unsafeForeignPtrToPtr)
import qualified Language.Haskell.TH as TH
import Prelude
import qualified Test.Hspec as Hspec
import Text.RawString.QQ (r)
import Foreign.Marshal.Alloc (alloca)
import Foreign.Storable (peek, poke)
import qualified Language.C.Inline as C
import qualified Language.C.Inline.Unsafe as CU
import qualified Language.C.Inline.Interruptible as CI
import qualified Language.C.Inline.Internal as C
import qualified Language.C.Inline.ContextSpec
import qualified Language.C.Inline.ParseSpec
import qualified Language.C.Types as C
import qualified Language.C.Types.ParseSpec
import Dummy
C.context (C.baseCtx <> C.fptrCtx <> C.funCtx <> C.vecCtx <> C.bsCtx)
C.include "<math.h>"
C.include "<stddef.h>"
C.include "<stdint.h>"
C.include "<stdio.h>"
C.verbatim [r|
int francescos_mul(int x, int y) {
return x * y;
}
|]
foreign import ccall "francescos_mul" francescos_mul :: Int -> Int -> Int
main :: IO ()
main = Hspec.hspec $ do
Hspec.describe "Language.C.Types.Parse" Language.C.Types.ParseSpec.spec
Hspec.describe "Language.C.Inline.Context" Language.C.Inline.ContextSpec.spec
Hspec.describe "Language.C.Inline.Parse" Language.C.Inline.ParseSpec.spec
Hspec.describe "TH integration" $ do
Hspec.it "inlineCode" $ do
let c_add = $(C.inlineCode $ C.Code
TH.Unsafe -- Call safety
Nothing
[t| Int -> Int -> Int |] -- Call type
"francescos_add" -- Call name
-- C Code
[r| int francescos_add(int x, int y) { int z = x + y; return z; } |]
False) -- not a function pointer
c_add 3 4 `Hspec.shouldBe` 7
Hspec.it "inlineItems" $ do
let c_add3 = $(do
here <- TH.location
C.inlineItems
TH.Unsafe
False -- not a function pointer
Nothing -- no postfix
here
[t| CInt -> CInt |]
(C.quickCParser_ True "int" C.parseType)
[("x", C.quickCParser_ True "int" C.parseType)]
[r| return x + 3; |])
c_add3 1 `Hspec.shouldBe` 1 + 3
Hspec.it "inlineExp" $ do
let x = $(do
here <- TH.location
C.inlineExp
TH.Safe
here
[t| CInt |]
(C.quickCParser_ True "int" C.parseType)
[]
[r| 1 + 4 |])
x `Hspec.shouldBe` 1 + 4
Hspec.it "inlineCode" $ do
francescos_mul 3 4 `Hspec.shouldBe` 12
Hspec.it "exp" $ do
let x = 3
let y = 4
z <- [C.exp| int{ $(int x) + $(int y) + 5 } |]
z `Hspec.shouldBe` x + y + 5
Hspec.it "pure" $ do
let x = 2
let y = 10
let z = [C.pure| int{ $(int x) + 10 + $(int y) } |]
z `Hspec.shouldBe` x + y + 10
Hspec.it "unsafe exp" $ do
let x = 2
let y = 10
z <- [CU.exp| int{ 7 + $(int x) + $(int y) } |]
z `Hspec.shouldBe` x + y + 7
Hspec.it "interruptible exp" $ do
let x = 2
let y = 10
z <- [CI.exp| int{ 7 + $(int x) + $(int y) } |]
z `Hspec.shouldBe` x + y + 7
Hspec.it "void exp" $ do
[C.exp| void { printf("Hello\n") } |]
Hspec.it "Foreign.C.Types library types" $ do
let x = 1
pd <- [C.block| ptrdiff_t { char a[2]; return &a[1] - &a[0] + $(ptrdiff_t x); } |]
pd `Hspec.shouldBe` 2
sz <- [C.exp| size_t { sizeof (char) } |]
sz `Hspec.shouldBe` 1
um <- [C.exp| uintmax_t { UINTMAX_MAX } |]
um `Hspec.shouldBe` maxBound
Hspec.it "stdint.h types" $ do
let x = 2
i16 <- [C.exp| int16_t { 1 + $(int16_t x) } |]
i16 `Hspec.shouldBe` 3
let y = 9
u32 <- [C.exp| uint32_t { $(uint32_t y) * 7 } |]
u32 `Hspec.shouldBe` 63
Hspec.it "foreign pointer argument" $ do
fptr <- mallocForeignPtrBytes 32
ptr <- [C.exp| int* { $fptr-ptr:(int *fptr) } |]
ptr `Hspec.shouldBe` unsafeForeignPtrToPtr fptr
Hspec.it "function pointer argument" $ do
let ackermann m n
| m == 0 = n + 1
| m > 0 && n == 0 = ackermann (m - 1) 1
| m > 0 && n > 0 = ackermann (m - 1) (ackermann m (n - 1))
| otherwise = error "ackermann"
ackermannPtr <- $(C.mkFunPtr [t| CInt -> CInt -> IO CInt |]) $ \m n -> return $ ackermann m n
let x = 3
let y = 4
z <- [C.exp| int { $(int (*ackermannPtr)(int, int))($(int x), $(int y)) } |]
z `Hspec.shouldBe` ackermann x y
Hspec.it "function pointer result" $ do
c_add <- [C.exp| int (*)(int, int) { &francescos_add } |]
x <- $(C.peekFunPtr [t| CInt -> CInt -> IO CInt |]) c_add 1 2
x `Hspec.shouldBe` 1 + 2
Hspec.it "quick function pointer argument" $ do
let ackermann m n
| m == 0 = n + 1
| m > 0 && n == 0 = ackermann (m - 1) 1
| m > 0 && n > 0 = ackermann (m - 1) (ackermann m (n - 1))
| otherwise = error "ackermann"
let ackermann_ m n = return $ ackermann m n
let x = 3
let y = 4
z <- [C.exp| int { $fun:(int (*ackermann_)(int, int))($(int x), $(int y)) } |]
z `Hspec.shouldBe` ackermann x y
Hspec.it "function pointer argument (pure)" $ do
let ackermann m n
| m == 0 = n + 1
| m > 0 && n == 0 = ackermann (m - 1) 1
| m > 0 && n > 0 = ackermann (m - 1) (ackermann m (n - 1))
| otherwise = error "ackermann"
ackermannPtr <- $(C.mkFunPtr [t| CInt -> CInt -> CInt |]) ackermann
let x = 3
let y = 4
let z = [C.pure| int { $(int (*ackermannPtr)(int, int))($(int x), $(int y)) } |]
z `Hspec.shouldBe` ackermann x y
Hspec.it "quick function pointer argument (pure)" $ do
let ackermann m n
| m == 0 = n + 1
| m > 0 && n == 0 = ackermann (m - 1) 1
| m > 0 && n > 0 = ackermann (m - 1) (ackermann m (n - 1))
| otherwise = error "ackermann"
let x = 3
let y = 4
let z = [C.pure| int { $fun:(int (*ackermann)(int, int))($(int x), $(int y)) } |]
z `Hspec.shouldBe` ackermann x y
Hspec.it "test mkFunPtrFromName" $ do
fun <- $(C.mkFunPtrFromName 'dummyFun)
z <- [C.exp| double { $(double (*fun)(double))(3.0) } |]
z' <- dummyFun 3.0
z `Hspec.shouldBe` z'
Hspec.it "vectors" $ do
let n = 10
vec <- V.replicate (fromIntegral n) 3
sum' <- V.unsafeWith vec $ \ptr -> [C.block| int {
int i;
int x = 0;
for (i = 0; i < $(int n); i++) {
x += $(int *ptr)[i];
}
return x;
} |]
sum' `Hspec.shouldBe` 3 * 10
Hspec.it "quick vectors" $ do
vec <- V.replicate 10 3
sum' <- [C.block| int {
int i;
int x = 0;
for (i = 0; i < $vec-len:vec; i++) {
x += $vec-ptr:(int *vec)[i];
}
return x;
} |]
sum' `Hspec.shouldBe` 3 * 10
Hspec.it "bytestrings" $ do
let bs = "foo"
bits <- [C.block| int {
int i, bits = 0;
for (i = 0; i < $bs-len:bs; i++) {
char ch = $bs-ptr:bs[i];
bits += (ch * 01001001001ULL & 042104210421ULL) % 017;
}
return bits;
} |]
bits `Hspec.shouldBe` 16
Hspec.it "Haskell identifiers" $ do
let x' = 3
void $ [C.exp| int { $(int x') } |]
let ä = 3
void $ [C.exp| int { $(int ä) } |]
void $ [C.exp| int { $(int Prelude.maxBound) } |]
Hspec.it "Function pointers" $ do
alloca $ \x_ptr -> do
poke x_ptr 7
let fp = [C.funPtr| void poke42(int *ptr) { *ptr = 42; } |]
[C.exp| void { $(void (*fp)(int *))($(int *x_ptr)) } |]
x <- peek x_ptr
x `Hspec.shouldBe` 42
Hspec.it "cpp namespace identifiers" $ do
C.cIdentifierFromString True "Test::Test" `Hspec.shouldBe` Right "Test::Test"
Hspec.it "cpp template identifiers" $ do
C.cIdentifierFromString True "std::vector" `Hspec.shouldBe` Right "std::vector"
|
