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98 lines
3.3 KiB
Haskell
98 lines
3.3 KiB
Haskell
{-# LANGUAGE NoMonomorphismRestriction, FlexibleContexts, TypeFamilies #-}
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module Main
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(main
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, CmdLineOptions(..)) where
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import Prelude hiding (return)
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-- Note: (#) and (&) are hidden in all Glance source files, since they would
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-- require a special case when translating when Glance is run on its own source
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-- code.
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import qualified Diagrams.Prelude as Dia hiding ((#), (&))
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import qualified Language.Haskell.Exts as Exts
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-- Options.Applicative does not seem to work qualified
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import Options.Applicative(header, progDesc, fullDesc, helper, info
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, defaultPrefs, customExecParser, help, short, switch
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, metavar, auto, argument, str, prefShowHelpOnError
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, Parser)
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import Icons(ColorStyle(..), colorScheme, multilineComment)
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import Rendering(renderIngSyntaxGraph)
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import Translate(translateModuleToCollapsedGraphs)
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import Util(customRenderSVG)
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data CmdLineOptions = CmdLineOptions {
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cmdInputFilename :: String,
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cmdOutputFilename :: String,
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cmdImageWidth :: Double,
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cmdIncludeComments :: Bool
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}
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optionParser :: Parser CmdLineOptions
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optionParser = CmdLineOptions
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<$> argument str (metavar "INPUT_FILE" Dia.<> help "Input .hs filename")
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<*> argument str (metavar "OUTPUT_FILE" Dia.<> help "Output .svg filename")
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<*> argument auto (metavar "IMAGE_WIDTH" Dia.<> help "Output image width")
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<*> switch
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(short 'c' Dia.<> help "Include comments between top level declarations.")
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renderFile :: CmdLineOptions -> IO ()
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renderFile (CmdLineOptions
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inputFilename
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outputFilename
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imageWidth
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includeComments)
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= do
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putStrLn $ "Translating file " ++ inputFilename ++ " into a Glance image."
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parseResult <- Exts.parseFileWithComments
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(Exts.defaultParseMode {
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Exts.extensions = [Exts.EnableExtension Exts.MultiParamTypeClasses
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, Exts.EnableExtension Exts.FlexibleContexts]
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, Exts.parseFilename = inputFilename
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})
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inputFilename
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let
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(parsedModule, comments) = Exts.fromParseResult parseResult
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drawings = translateModuleToCollapsedGraphs parsedModule
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--print parsedModule
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--print "\n\n"
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--print drawings
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diagrams <- traverse renderIngSyntaxGraph drawings
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let
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commentsInBoxes
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= fmap
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(\(Exts.Comment _ _ c) ->
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Dia.alignL $ multilineComment Dia.white (Dia.opaque Dia.white) c)
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comments
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diagramsAndComments
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= Dia.vsep 2 $ zipWith
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(\x y -> x Dia.=== Dia.strutY 0.4 Dia.=== y)
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commentsInBoxes
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(fmap Dia.alignL diagrams)
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justDiagrams = Dia.vsep 1 $ fmap Dia.alignL diagrams
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diagramsAndMaybeComments
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= if includeComments then diagramsAndComments else justDiagrams
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--print comments
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finalDia = Dia.bgFrame 1 (backgroundC colorScheme) diagramsAndMaybeComments
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customRenderSVG outputFilename (Dia.mkWidth imageWidth) finalDia
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putStrLn $ "Successfully wrote " ++ outputFilename
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translateFileMain :: IO ()
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translateFileMain = customExecParser parserPrefs opts >>= renderFile where
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parserPrefs = defaultPrefs{
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prefShowHelpOnError = True
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}
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opts = info (helper <*> optionParser)
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(fullDesc
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Dia.<> progDesc "Translate a Haskell source file (.hs) into an SVG image."
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Dia.<> header "Glance - a visual representation of Haskell")
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main :: IO ()
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main = translateFileMain
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