module Language.Preprocessor.Cpphs.RunCpphs ( runCpphs ) where
import Language.Preprocessor.Cpphs.CppIfdef (cppIfdef)
import Language.Preprocessor.Cpphs.MacroPass(macroPass)
import Language.Preprocessor.Cpphs.Options (CpphsOptions(..), BoolOptions(..))
import Language.Preprocessor.Unlit as Unlit (unlit)
runCpphs :: CpphsOptions -> FilePath -> String -> String
runCpphs options filename input =
let bools = boolopts options
preInc = case preInclude options of
[] -> ""
is -> concatMap (\f->"#include \""++f++"\"\n") is
++ "#line 1 \""++filename++"\"\n"
pass1 = cppIfdef filename (defines options) (includes options) bools
(preInc++input)
pass2 = macroPass (defines options) bools pass1
result= if not (macros bools) then unlines (map snd pass1) else pass2
pass3 = if literate bools then Unlit.unlit filename else id
in pass3 result