cpphs-1.11: A liberalised re-implementation of cpp, the C pre-processor. Contents Index

Language.Preprocessor.Cpphs Portability All Stability experimental Maintainer Malcolm Wallace <Malcolm.Wallace@cs.york.ac.uk>

Description

Include the interface that is exported

Synopsis

runCpphs :: CpphsOptions -> FilePath -> String -> IO String cppIfdef :: FilePath -> [(String, String)] -> [String] -> BoolOptions -> String -> IO [(Posn, String)] macroPass :: [(String, String)] -> BoolOptions -> [(Posn, String)] -> IO String data CpphsOptions = CpphsOptions { infiles :: [FilePath] outfiles :: [FilePath] defines :: [(String, String)] includes :: [String] preInclude :: [FilePath] boolopts :: BoolOptions } data BoolOptions = BoolOptions { macros :: Bool locations :: Bool hashline :: Bool pragma :: Bool stripEol :: Bool stripC89 :: Bool lang :: Bool ansi :: Bool layout :: Bool literate :: Bool warnings :: Bool } parseOptions :: [String] -> Either String CpphsOptions defaultCpphsOptions :: CpphsOptions defaultBoolOptions :: BoolOptions data Posn = Pn String !Int !Int (Maybe Posn) newfile :: String -> Posn addcol :: Int -> Posn -> Posn newline :: Posn -> Posn tab :: Posn -> Posn newlines :: Int -> Posn -> Posn newpos :: Int -> Maybe String -> Posn -> Posn cppline :: Posn -> String haskline :: Posn -> String cpp2hask :: String -> String filename :: Posn -> String lineno :: Posn -> Int directory :: Posn -> FilePath

Documentation

runCpphs :: CpphsOptions -> FilePath -> String -> IO String

cppIfdef

:: FilePath File for error reports -> [(String, String)] Pre-defined symbols and their values -> [String] Search path for #includes -> BoolOptions Options controlling output style -> String The input file content -> IO [(Posn, String)] The file after processing (in lines) Run a first pass of cpp, evaluating #ifdef's and processing #include's, whilst taking account of #define's and #undef's as we encounter them.

macroPass

:: [(String, String)] Pre-defined symbols and their values -> BoolOptions Options that alter processing style -> [(Posn, String)] The input file content -> IO String The file after processing Walk through the document, replacing calls of macros with the expanded RHS.

data CpphsOptions

Cpphs options structure. Constructors CpphsOptions infiles :: [FilePath] outfiles :: [FilePath] defines :: [(String, String)] includes :: [String] preInclude :: [FilePath] Files to #include before anything else boolopts :: BoolOptions

data BoolOptions

Options representable as Booleans. Constructors BoolOptions macros :: Bool Leave #define and #undef in output of ifdef? locations :: Bool Place #line droppings in output? hashline :: Bool Write -} ? pragma :: Bool Keep #pragma in final output? stripEol :: Bool Remove C eol (//) comments everywhere? stripC89 :: Bool Remove C inline (/**/) comments everywhere? lang :: Bool Lex input as Haskell code? ansi :: Bool Permit stringise # and catenate ## operators? layout :: Bool Retain newlines in macro expansions? literate :: Bool Remove literate markup? warnings :: Bool Issue warnings?

parseOptions :: [String] -> Either String CpphsOptions

Parse all command-line options.

defaultCpphsOptions :: CpphsOptions

Default options.

defaultBoolOptions :: BoolOptions

Default settings of boolean options.

data Posn

Source positions contain a filename, line, column, and an inclusion point, which is itself another source position, recursively. Constructors Pn String !Int !Int (Maybe Posn) Instances Eq Posn Show Posn

newfile :: String -> Posn

Constructor. Argument is filename.

addcol :: Int -> Posn -> Posn

Increment column number by given quantity.

newline :: Posn -> Posn

Increment row number, reset column to 1.

tab :: Posn -> Posn

Increment column number, tab stops are every 8 chars.

newlines :: Int -> Posn -> Posn

Increment row number by given quantity.

newpos :: Int -> Maybe String -> Posn -> Posn

Update position with a new row, and possible filename.

cppline :: Posn -> String

cpp-style printing of file position

haskline :: Posn -> String

haskell-style printing of file position

cpp2hask :: String -> String

Conversion from a cpp-style to haskell-style pragma.

filename :: Posn -> String

Project the filename.

lineno :: Posn -> Int

Project the line number.

directory :: Posn -> FilePath

Project the directory of the filename.

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