-- Copyright © 2015 Mykola Orliuk <virkony@gmail.com>
-- Distributed under the terms of the GNU General Public License v2

{-# OPTIONS_GHC -fno-warn-orphans #-}

{-# LANGUAGE UnicodeSyntax #-}
{-# LANGUAGE FlexibleInstances #-}

module ExRender.Haddock () where

import ExRender.Base

import Documentation.Haddock.Parser
import Documentation.Haddock.Types

instance ExRender Identifier where exDisp (_, s, _) = text s
instance ExRenderQ Identifier where exDispQ = exDisp

instance ExRenderQ id => ExRenderQ (DocH mod id) where
    exDispQ x = case x of
        DocEmpty → empty
        DocAppend a b → exDispQ a <> exDispQ b
        DocString s → exDispQ s
        DocParagraph a → exDispQ a
        DocIdentifier s → exDispQ s
        DocModule s → exDispQ s
        DocWarning a → exDispQ a
        DocEmphasis a → exDispQ a
        DocMonospaced a → exDispQ a
        DocBold a → exDispQ a
        DocHyperlink (Hyperlink _ (Just s)) → exDispQ s
        DocHyperlink (Hyperlink s Nothing) → exDispQ s
        DocPic _ → empty -- XXX: no images in description
        DocAName s → exDispQ s
        DocProperty s → exDispQ s
        DocExamples _ → empty -- XXX: examples are filtered out
        _ → error $ "Unsupported haddock node"