292385b · hakyll · git.iko.soy

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Hint for weird yaml error

292385bJasper Van der Jeugt11 years ago

src/Hakyll/Core/Provider/Metadata.hs+13−2

@@ -1,6 +1,7 @@

1--------------------------------------------------------------------------------

2-- | Internal module to parse metadata

3−{-# LANGUAGE BangPatterns #-}

3+{-# LANGUAGE BangPatterns #-}

4+{-# LANGUAGE RecordWildCards #-}

4module Hakyll.Core.Provider.Metadata

5module Hakyll.Core.Provider.Metadata

5 ( loadMetadata

6 ( loadMetadata

6 , parsePage

7 , parsePage

@@ -140,4 +141,14 @@ instance Exception MetadataException

140--------------------------------------------------------------------------------

141--------------------------------------------------------------------------------

141instance Show MetadataException where

142instance Show MetadataException where

142 show (MetadataException fp err) =

143 show (MetadataException fp err) =

143− fp ++ ": " ++ Yaml.prettyPrintParseException err

144+ fp ++ ": " ++ Yaml.prettyPrintParseException err ++ hint

145+

146+ where

147+ hint = case err of

148+ Yaml.InvalidYaml (Just (Yaml.YamlParseException {..}))

149+ | yamlProblem == problem -> "\n" ++

150+ "Hint: if the metadata value contains characters such\n" ++

151+ "as ':' or '-', try enclosing it in quotes."

152+ _ -> ""

153+

154+ problem = "mapping values are not allowed in this context"