GHC.Internal.Exception.Context

Exception context represents a list of ExceptionAnnotations. These are attached to SomeExceptions via Control.Exception.addExceptionContext and can be used to capture various ad-hoc metadata about the exception including backtraces and application-specific context.

ExceptionContexts can be merged via concatenation using the Semigroup instance or mergeExceptionContext.

Note that GHC will automatically solve implicit constraints of type ExceptionContext with emptyExceptionContext.

An ExceptionContext containing no annotations.

Construct a singleton ExceptionContext from an ExceptionAnnotation.

Retrieve all ExceptionAnnotations of the given type from an ExceptionContext.

Merge two ExceptionContexts via concatenation

Render ExceptionContext to a human-readable String.

ExceptionAnnotations are types which can decorate exceptions as ExceptionContext.