Data.Error.Tree

Documentation

newtype ErrorTree

A tree of Errors, with a single root Error and 0..n nested ErrorTrees.

top error
|
|-- error 1
| |
|  -- error 1.1
|
|-- error 2

Constructors

ErrorTree

Fields

• unErrorTree :: Tree Error

Instances

IsString ErrorTree

Defined in Data.Error.Tree

Methods

fromString :: String -> ErrorTree

Show ErrorTree

Defined in Data.Error.Tree

Methods

showsPrec :: Int -> ErrorTree -> ShowS

show :: ErrorTree -> String

showList :: [ErrorTree] -> ShowS

singleError :: Error -> ErrorTree

Turn a single Error into an ErrorTree, a leaf.

errorTree :: Error -> NonEmpty Error -> ErrorTree

Take a list of errors & create a new ErrorTree with the given Error as the root.

errorTreeContext :: Text -> ErrorTree -> ErrorTree

Attach more context to the root Error of the ErrorTree, via errorContext.

nestedError :: Error -> ErrorTree -> ErrorTree

Nest the given Error around the ErrorTree

top level error
|
-- nestedError
  |
  -- error 1
  |
  -- error 2

nestedMultiError :: Error -> NonEmpty ErrorTree -> ErrorTree

Nest the given Error around the list of ErrorTrees.

top level error
|
|- nestedError1
| |
| -- error 1
| |
| -- error 2
|
|- nestedError 2

prettyErrorTree :: ErrorTree -> Text

prettyErrorTrees :: NonEmpty ErrorTree -> Text