remove comments by default; added --verbose flag

src/Convert.hs

@@ -23,6 +23,7 @@ import qualified Convert.NamedBlock
 import qualified Convert.NestPI
 import qualified Convert.Package
 import qualified Convert.PackedArray
+import qualified Convert.RemoveComments
 import qualified Convert.Return
 import qualified Convert.StarPort
 import qualified Convert.StmtBlock
@@ -56,6 +57,7 @@ phases excludes =
     , Convert.Return.convert
     , selectExclude (Job.Interface, Convert.Interface.convert)
     , selectExclude (Job.Always   , Convert.AlwaysKW.convert)
+    , selectExclude (Job.Succinct , Convert.RemoveComments.convert)
     ]
     where
         selectExclude :: (Job.Exclude, Phase) -> Phase

src/Convert/RemoveComments.hs

@@ -0,0 +1,26 @@
+{- sv2v
+ - Author: Zachary Snow <zach@zachjs.com>
+ -
+ - Conversion for removing any comments
+ -}
+
+module Convert.RemoveComments (convert) where
+
+import Convert.Traverse
+import Language.SystemVerilog.AST
+
+convert :: [AST] -> [AST]
+convert = map convertFile
+
+convertFile :: AST -> AST
+convertFile =
+    traverseDescriptions (traverseModuleItems convertModuleItem) .
+    filter (not . isComment)
+
+isComment :: Description -> Bool
+isComment (PackageItem (Comment _)) = True
+isComment _ = False
+
+convertModuleItem :: ModuleItem -> ModuleItem
+convertModuleItem (MIPackageItem (Comment _)) = Generate []
+convertModuleItem other = other

src/Job.hs

@@ -13,6 +13,7 @@ data Exclude
     = Always
     | Interface
     | Logic
+    | Succinct
     deriving (Show, Typeable, Data, Eq)
 
 data Job = Job
@@ -21,6 +22,7 @@ data Job = Job
     , incdir :: [FilePath]
     , define :: [String]
     , oneunit :: Bool
+    , verbose :: Bool
     } deriving (Show, Typeable, Data)
 
 defaultJob :: Job
@@ -33,6 +35,7 @@ defaultJob = Job
         ++ " preprocessing")
     , oneunit = False &= help ("put all files in one compilation unit, so"
         ++ " macros from earlier files remain defined in later files")
+    , verbose = False &= help "retain certain conversion artifacts"
     }
     &= program "sv2v"
     &= summary "sv2v v0.0.1, (C) 2019 Zachary Snow, 2011-2015 Tom Hawkins"
@@ -40,4 +43,8 @@ defaultJob = Job
                , "More info: https://github.com/zachjs/sv2v" ]
 
 readJob :: IO Job
-readJob = cmdArgs defaultJob
+readJob = do
+    job <- cmdArgs defaultJob
+    return $ if verbose job
+        then job { exclude = Succinct : exclude job }
+        else job

sv2v.cabal

@@ -67,6 +67,7 @@ executable sv2v
     Convert.NestPI
     Convert.Package
     Convert.PackedArray
+    Convert.RemoveComments
     Convert.Return
     Convert.StarPort
     Convert.StmtBlock