diff options
Diffstat (limited to 'src/Text/Pandoc/Extensions.hs')
| -rw-r--r-- | src/Text/Pandoc/Extensions.hs | 54 |
1 files changed, 37 insertions, 17 deletions
diff --git a/src/Text/Pandoc/Extensions.hs b/src/Text/Pandoc/Extensions.hs index 91cd045de..68d76792c 100644 --- a/src/Text/Pandoc/Extensions.hs +++ b/src/Text/Pandoc/Extensions.hs @@ -29,6 +29,12 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA Data structures and functions for representing markup extensions. -} module Text.Pandoc.Extensions ( Extension(..) + , Extensions + , emptyExtensions + , extensionsFromList + , extensionEnabled + , enableExtension + , disableExtension , pandocExtensions , plainExtensions , strictExtensions @@ -36,15 +42,29 @@ module Text.Pandoc.Extensions ( Extension(..) , githubMarkdownExtensions , multimarkdownExtensions ) where -import Data.LargeWord (Word256) -import Data.Bits () -import Data.Set (Set) -import qualified Data.Set as Set +import Data.Word (Word64) +import Data.Bits (testBit, setBit, clearBit) import Data.Data (Data) import Data.Typeable (Typeable) import GHC.Generics (Generic) -newtype Extensions = Extensions { unExtensions :: Word256 } +newtype Extensions = Extensions Word64 + deriving (Show, Read, Eq, Ord, Bounded, Data, Typeable, Generic) + +extensionsFromList :: [Extension] -> Extensions +extensionsFromList = foldr enableExtension emptyExtensions + +emptyExtensions :: Extensions +emptyExtensions = Extensions 0 + +extensionEnabled :: Extension -> Extensions -> Bool +extensionEnabled x (Extensions exts) = testBit exts (fromEnum x) + +enableExtension :: Extension -> Extensions -> Extensions +enableExtension x (Extensions exts) = Extensions (setBit exts (fromEnum x)) + +disableExtension :: Extension -> Extensions -> Extensions +disableExtension x (Extensions exts) = Extensions (clearBit exts (fromEnum x)) -- | Individually selectable syntax extensions. data Extension = @@ -112,8 +132,8 @@ data Extension = | Ext_shortcut_reference_links -- ^ Shortcut reference links deriving (Show, Read, Enum, Eq, Ord, Bounded, Data, Typeable, Generic) -pandocExtensions :: Set Extension -pandocExtensions = Set.fromList +pandocExtensions :: Extensions +pandocExtensions = extensionsFromList [ Ext_footnotes , Ext_inline_notes , Ext_pandoc_title_block @@ -157,8 +177,8 @@ pandocExtensions = Set.fromList , Ext_shortcut_reference_links ] -plainExtensions :: Set Extension -plainExtensions = Set.fromList +plainExtensions :: Extensions +plainExtensions = extensionsFromList [ Ext_table_captions , Ext_implicit_figures , Ext_simple_tables @@ -175,8 +195,8 @@ plainExtensions = Set.fromList , Ext_strikeout ] -phpMarkdownExtraExtensions :: Set Extension -phpMarkdownExtraExtensions = Set.fromList +phpMarkdownExtraExtensions :: Extensions +phpMarkdownExtraExtensions = extensionsFromList [ Ext_footnotes , Ext_pipe_tables , Ext_raw_html @@ -190,8 +210,8 @@ phpMarkdownExtraExtensions = Set.fromList , Ext_shortcut_reference_links ] -githubMarkdownExtensions :: Set Extension -githubMarkdownExtensions = Set.fromList +githubMarkdownExtensions :: Extensions +githubMarkdownExtensions = extensionsFromList [ Ext_angle_brackets_escapable , Ext_pipe_tables , Ext_raw_html @@ -208,8 +228,8 @@ githubMarkdownExtensions = Set.fromList , Ext_shortcut_reference_links ] -multimarkdownExtensions :: Set Extension -multimarkdownExtensions = Set.fromList +multimarkdownExtensions :: Extensions +multimarkdownExtensions = extensionsFromList [ Ext_pipe_tables , Ext_raw_html , Ext_markdown_attribute @@ -237,8 +257,8 @@ multimarkdownExtensions = Set.fromList , Ext_subscript ] -strictExtensions :: Set Extension -strictExtensions = Set.fromList +strictExtensions :: Extensions +strictExtensions = extensionsFromList [ Ext_raw_html , Ext_shortcut_reference_links ] |