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-rw-r--r--haddock-library/src/Documentation/Haddock/Markup.hs82
1 files changed, 58 insertions, 24 deletions
diff --git a/haddock-library/src/Documentation/Haddock/Markup.hs b/haddock-library/src/Documentation/Haddock/Markup.hs
index da8edcd4..365041ee 100644
--- a/haddock-library/src/Documentation/Haddock/Markup.hs
+++ b/haddock-library/src/Documentation/Haddock/Markup.hs
@@ -2,35 +2,38 @@
module Documentation.Haddock.Markup (
markup
, idMarkup
+ , plainMarkup
) where
import Documentation.Haddock.Types
+import Data.Maybe ( fromMaybe )
+
markup :: DocMarkupH mod id a -> DocH mod id -> a
-markup m DocEmpty = markupEmpty m
-markup m (DocAppend d1 d2) = markupAppend m (markup m d1) (markup m d2)
-markup m (DocString s) = markupString m s
-markup m (DocParagraph d) = markupParagraph m (markup m d)
-markup m (DocIdentifier x) = markupIdentifier m x
-markup m (DocIdentifierUnchecked x) = markupIdentifierUnchecked m x
-markup m (DocModule mod0) = markupModule m mod0
-markup m (DocWarning d) = markupWarning m (markup m d)
-markup m (DocEmphasis d) = markupEmphasis m (markup m d)
-markup m (DocBold d) = markupBold m (markup m d)
-markup m (DocMonospaced d) = markupMonospaced m (markup m d)
-markup m (DocUnorderedList ds) = markupUnorderedList m (map (markup m) ds)
-markup m (DocOrderedList ds) = markupOrderedList m (map (markup m) ds)
-markup m (DocDefList ds) = markupDefList m (map (markupPair m) ds)
-markup m (DocCodeBlock d) = markupCodeBlock m (markup m d)
-markup m (DocHyperlink l) = markupHyperlink m l
-markup m (DocAName ref) = markupAName m ref
-markup m (DocPic img) = markupPic m img
-markup m (DocMathInline mathjax) = markupMathInline m mathjax
-markup m (DocMathDisplay mathjax) = markupMathDisplay m mathjax
-markup m (DocProperty p) = markupProperty m p
-markup m (DocExamples e) = markupExample m e
-markup m (DocHeader (Header l t)) = markupHeader m (Header l (markup m t))
-markup m (DocTable (Table h b)) = markupTable m (Table (map (fmap (markup m)) h) (map (fmap (markup m)) b))
+markup m DocEmpty = markupEmpty m
+markup m (DocAppend d1 d2) = markupAppend m (markup m d1) (markup m d2)
+markup m (DocString s) = markupString m s
+markup m (DocParagraph d) = markupParagraph m (markup m d)
+markup m (DocIdentifier x) = markupIdentifier m x
+markup m (DocIdentifierUnchecked x) = markupIdentifierUnchecked m x
+markup m (DocModule mod0) = markupModule m mod0
+markup m (DocWarning d) = markupWarning m (markup m d)
+markup m (DocEmphasis d) = markupEmphasis m (markup m d)
+markup m (DocBold d) = markupBold m (markup m d)
+markup m (DocMonospaced d) = markupMonospaced m (markup m d)
+markup m (DocUnorderedList ds) = markupUnorderedList m (map (markup m) ds)
+markup m (DocOrderedList ds) = markupOrderedList m (map (markup m) ds)
+markup m (DocDefList ds) = markupDefList m (map (markupPair m) ds)
+markup m (DocCodeBlock d) = markupCodeBlock m (markup m d)
+markup m (DocHyperlink (Hyperlink u l)) = markupHyperlink m (Hyperlink u (fmap (markup m) l))
+markup m (DocAName ref) = markupAName m ref
+markup m (DocPic img) = markupPic m img
+markup m (DocMathInline mathjax) = markupMathInline m mathjax
+markup m (DocMathDisplay mathjax) = markupMathDisplay m mathjax
+markup m (DocProperty p) = markupProperty m p
+markup m (DocExamples e) = markupExample m e
+markup m (DocHeader (Header l t)) = markupHeader m (Header l (markup m t))
+markup m (DocTable (Table h b)) = markupTable m (Table (map (fmap (markup m)) h) (map (fmap (markup m)) b))
markupPair :: DocMarkupH mod id a -> (DocH mod id, DocH mod id) -> (a, a)
markupPair m (a,b) = (markup m a, markup m b)
@@ -63,3 +66,34 @@ idMarkup = Markup {
markupHeader = DocHeader,
markupTable = DocTable
}
+
+-- | Map a 'DocH' into a best estimate of an alternate string. The idea is to
+-- strip away any formatting while preserving as much of the actual text as
+-- possible.
+plainMarkup :: (mod -> String) -> (id -> String) -> DocMarkupH mod id String
+plainMarkup plainMod plainIdent = Markup {
+ markupEmpty = "",
+ markupString = id,
+ markupParagraph = id,
+ markupAppend = (++),
+ markupIdentifier = plainIdent,
+ markupIdentifierUnchecked = plainMod,
+ markupModule = id,
+ markupWarning = id,
+ markupEmphasis = id,
+ markupBold = id,
+ markupMonospaced = id,
+ markupUnorderedList = const "",
+ markupOrderedList = const "",
+ markupDefList = const "",
+ markupCodeBlock = id,
+ markupHyperlink = \(Hyperlink url lbl) -> fromMaybe url lbl,
+ markupAName = id,
+ markupPic = \(Picture uri title) -> fromMaybe uri title,
+ markupMathInline = id,
+ markupMathDisplay = id,
+ markupProperty = id,
+ markupExample = const "",
+ markupHeader = \(Header _ title) -> title,
+ markupTable = const ""
+ }