Safe Haskell	Safe-Inferred
Language	Haskell2010

Data.CallStack

Synopsis

type HasCallStack = ?callStack :: CallStack
type CallStack = [(String, SrcLoc)]
data SrcLoc = SrcLoc {
- srcLocPackage :: [Char]
- srcLocModule :: [Char]
- srcLocFile :: [Char]
- srcLocStartLine :: Int
- srcLocStartCol :: Int
- srcLocEndLine :: Int
- srcLocEndCol :: Int
}
callStack :: HasCallStack => CallStack
callSite :: HasCallStack => Maybe (String, SrcLoc)

Documentation

type HasCallStack = ?callStack :: CallStack #

Request a CallStack.

NOTE: The implicit parameter ?callStack :: CallStack is an implementation detail and should not be considered part of the CallStack API, we may decide to change the implementation in the future.

Since: base-4.9.0.0

type CallStack = [(String, SrcLoc)] Source #

data SrcLoc #

A single location in the source code.

Since: base-4.8.1.0

Constructors

SrcLoc
Fields srcLocPackage :: [Char] srcLocModule :: [Char] srcLocFile :: [Char] srcLocStartLine :: Int srcLocStartCol :: Int srcLocEndLine :: Int srcLocEndCol :: Int

Instances

Instances details

Eq SrcLoc	Since: base-4.9.0.0
Instance details Defined in GHC.Stack.Types Methods (==) :: SrcLoc -> SrcLoc -> Bool # (/=) :: SrcLoc -> SrcLoc -> Bool #
Show SrcLoc	Since: base-4.9.0.0
Instance details Defined in GHC.Show Methods showsPrec :: Int -> SrcLoc -> ShowS # show :: SrcLoc -> String # showList :: [SrcLoc] -> ShowS #

callStack :: HasCallStack => CallStack Source #

callSite :: HasCallStack => Maybe (String, SrcLoc) Source #