{-|
Description:    Token processing rules between the closing @\</frameset\>@ and @\</html\>@ tags.

Copyright:      (c) 2020 Sam May
License:        MPL-2.0
Maintainer:     ag.eitilt@gmail.com

Stability:      stable
Portability:    portable
-}
module Web.Mangrove.Parse.Tree.AfterFrameset
    ( treeAfterFrameset
    ) where


import Web.Mangrove.Parse.Common.Error
import Web.Mangrove.Parse.Tree.Common
import Web.Mangrove.Parse.Tree.InBody
import Web.Mangrove.Parse.Tree.InHead
import Web.Mangrove.Parse.Tree.Patch
import Web.Willow.Common.Parser
import Web.Willow.Common.Parser.Switch


-- | __HTML:__
--      @[the "after frameset" insertion mode]
--      (https://html.spec.whatwg.org/multipage/parsing.html#parsing-main-afterframeset)@
-- 
-- The parsing instructions corresponding to the 'AfterFrameset' section of the
-- state machine.
treeAfterFrameset :: TreeBuilder TreeOutput
treeAfterFrameset = next >>= switch
    [ If isWhitespace insertCharacter
    , If isComment insertComment
    , If isDoctype $ \t' ->
        packTreeErrors [UnexpectedDoctype $ tokenDocumentType t'] t'
    , If (isStartTag ["html"]) $ \t' -> do
        push t'
        treeInBody
    , If (isEndTag ["html"]) $ \t' -> switchMode AfterAfterFrameset *> packTreeErrors [] t'
    , If (isStartTag ["noframes"]) $ \t' -> do
        push t'
        treeInHead
    , If isEOF stopParsing
    , Else $ packTreeErrors [UnexpectedNodeAfterFrameset]
    ]