[Haskell] Does GHC support the standard CPP functionalities?

22 Nov 2008

      Hi,

I tried to compile the following program by GHC

{-# LANGUAGE CPP #-}

module Packer where

#define FLASH_APP_START  1
#define FLASH_APP_END    2
#define INSERT_SECTION(x) (#x, (FLASH_##x##_START, FLASH_##x##_END))

import qualified Data.Map as M
import Data.Tuple
import System.IO as Sys

type Name     = String
type Boundary = (Int, Int)

boundaryList = [INSERT_SECTION(APP)]    

main = Sys.print boundaryList

But failed with

test.hs:16:17: Not in scope: `#'

test.hs:16:17:
    A section must be enclosed in parentheses thus: (# APP)

test.hs:16:18: Not in scope: data constructor `APP'

test.hs:16:24: Not in scope: data constructor `FLASH_'

test.hs:16:30: Not in scope: `##'

test.hs:16:32: Not in scope: data constructor `APP'

test.hs:16:35: Not in scope: `##'

Seems GHC does support macro like #x a##b. Is that true? If not, how to resolve?

Thanks alot.

Haihua

[Haskell] Does GHC support the standard CPP functionalities?

haihualin