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{-# OPTIONS_GHC -fglasgow-exts #-} -- for deriving Typeable
{-
Copyright (C) 2006-7 John MacFarlane <jgm@berkeley.edu>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-}
{- |
Module : Text.Pandoc.Definition
Copyright : Copyright (C) 2006-7 John MacFarlane
License : GNU GPL, version 2 or above
Maintainer : John MacFarlane <jgm@berkeley.edu>
Stability : alpha
Portability : portable
Definition of 'Pandoc' data structure for format-neutral representation
of documents.
-}
module Text.Pandoc.Definition where
import Data.Generics
data Pandoc = Pandoc Meta [Block] deriving (Eq, Read, Show, Typeable, Data)
-- | Bibliographic information for the document: title, authors, date.
data Meta = Meta [Inline] -- title
[[Inline]] -- list of authors
[Inline] -- date
deriving (Eq, Show, Read, Typeable, Data)
-- | Alignment of a table column.
data Alignment = AlignLeft
| AlignRight
| AlignCenter
| AlignDefault deriving (Eq, Show, Read, Typeable, Data)
-- | List attributes.
type ListAttributes = (Int, ListNumberStyle, ListNumberDelim)
-- | Style of list numbers.
data ListNumberStyle = DefaultStyle
| Decimal
| LowerRoman
| UpperRoman
| LowerAlpha
| UpperAlpha deriving (Eq, Show, Read, Typeable, Data)
-- | Delimiter of list numbers.
data ListNumberDelim = DefaultDelim
| Period
| OneParen
| TwoParens deriving (Eq, Show, Read, Typeable, Data)
-- | Attributes: identifier, classes, key-value pairs
type Attr = (String, [String], [(String, String)])
-- | Block element.
data Block
= Plain [Inline] -- ^ Plain text, not a paragraph
| Para [Inline] -- ^ Paragraph
| CodeBlock Attr String -- ^ Code block (literal) with attributes
| RawHtml String -- ^ Raw HTML block (literal)
| BlockQuote [Block] -- ^ Block quote (list of blocks)
| OrderedList ListAttributes [[Block]] -- ^ Ordered list (attributes
-- and a list of items, each a list of blocks)
| BulletList [[Block]] -- ^ Bullet list (list of items, each
-- a list of blocks)
| DefinitionList [([Inline],[[Block]])] -- ^ Definition list
-- Each list item is a pair consisting of a
-- term (a list of inlines) and one or more
-- definitions (each a list of blocks)
| Header Int [Inline] -- ^ Header - level (integer) and text (inlines)
| HorizontalRule -- ^ Horizontal rule
| Table [Inline] [Alignment] [Double] [[Block]] [[[Block]]] -- ^ Table,
-- with caption, column alignments,
-- relative column widths (0 = default),
-- column headers (each a list of blocks), and
-- rows (each a list of lists of blocks)
| Null -- ^ Nothing
deriving (Eq, Read, Show, Typeable, Data)
-- | Type of quotation marks to use in Quoted inline.
data QuoteType = SingleQuote | DoubleQuote deriving (Show, Eq, Read, Typeable, Data)
-- | Link target (URL, title).
type Target = (String, String)
-- | Type of math element (display or inline).
data MathType = DisplayMath | InlineMath deriving (Show, Eq, Read, Typeable, Data)
-- | Inline elements.
data Inline
= Str String -- ^ Text (string)
| Emph [Inline] -- ^ Emphasized text (list of inlines)
| Strong [Inline] -- ^ Strongly emphasized text (list of inlines)
| Strikeout [Inline] -- ^ Strikeout text (list of inlines)
| Superscript [Inline] -- ^ Superscripted text (list of inlines)
| Subscript [Inline] -- ^ Subscripted text (list of inlines)
| SmallCaps [Inline] -- ^ Small caps text (list of inlines)
| Quoted QuoteType [Inline] -- ^ Quoted text (list of inlines)
| Cite [Target] [Inline] -- ^ Citation (list of inlines)
| Code String -- ^ Inline code (literal)
| Space -- ^ Inter-word space
| EmDash -- ^ Em dash
| EnDash -- ^ En dash
| Apostrophe -- ^ Apostrophe
| Ellipses -- ^ Ellipses
| LineBreak -- ^ Hard line break
| Math MathType String -- ^ TeX math (literal)
| TeX String -- ^ LaTeX code (literal)
| HtmlInline String -- ^ HTML code (literal)
| Link [Inline] Target -- ^ Hyperlink: text (list of inlines), target
| Image [Inline] Target -- ^ Image: alt text (list of inlines), target
-- and target
| Note [Block] -- ^ Footnote or endnote
deriving (Show, Eq, Read, Typeable, Data)
-- | Applies a transformation on @a@s to matching elements in a @b@.
processWith :: (Data a, Data b) => (a -> a) -> b -> b
processWith f = everywhere (mkT f)
-- | Like 'processWith', but with monadic transformations.
processWithM :: (Monad m, Data a, Data b) => (a -> m a) -> b -> m b
processWithM f = everywhereM (mkM f)
-- | Runs a query on matching @a@ elements in a @c@.
queryWith :: (Data a, Data c) => (a -> [b]) -> c -> [b]
queryWith f = everything (++) ([] `mkQ` f)
{-# DEPRECATED processPandoc "Use processWith instead" #-}
processPandoc :: Data a => (a -> a) -> Pandoc -> Pandoc
processPandoc = processWith
{-# DEPRECATED queryPandoc "Use queryWith instead" #-}
queryPandoc :: Data a => (a -> [b]) -> Pandoc -> [b]
queryPandoc = queryWith
|
