(sigil exceptions)

Create an exception with the given kind, message, and irritants.

Re-exported from (sigil core)

Create an exception with stack trace.

Re-exported from (sigil core)

Check if obj is an exception.

Re-exported from (sigil core)

Get the kind of an exception (e.g., 'error, 'type-error).

Re-exported from (sigil core)

Get the message from an exception.

Re-exported from (sigil core)

Get the irritants (additional data) from an exception.

Re-exported from (sigil core)

Get the stack trace from an exception.

Re-exported from (sigil core)

Raise an exception (non-continuable). The compiler compiles direct calls to OP_RAISE (which handles stack trace attachment and searches the VM exception handler stack). This Scheme wrapper exists for first-class use (e.g. apply/map).

Re-exported from (sigil core)

Raise a continuable exception. The handler can return a value to continue execution.

Re-exported from (sigil core)

Convenience function to raise an error exception. (error "message" irritant ...)

Re-exported from (sigil core)

Install an exception handler and execute thunk (R6RS style). Handler is a procedure taking the exception. Thunk is the body to execute.

Re-exported from (sigil core)

Get the current exception handler.

Re-exported from (sigil core)

Create a generic error exception.

(raise (make-error "Something went wrong"))
(raise (make-error "Invalid input" input-value))

Re-exported from (sigil error)

Test if an exception is a generic error.

Re-exported from (sigil error)

Test if a value is a type-error struct.

Re-exported from (sigil error)

Test if a value is a range-error struct.

Re-exported from (sigil error)

Test if a value is a arity-error struct.

Re-exported from (sigil error)

Re-exported from (sigil error)

Print an exception to standard output.

(guard (exn
         (else (print-exception exn)))
  (error "failed"))

Re-exported from (sigil error)

Format an exception as a human-readable string.

Works with both old-style exception vectors and new error structs. Includes the error kind, message, structured fields, and stack trace.

(guard (exn
         (else (display (format-exception exn))))
  (error "something failed"))
; Error (error): something failed

Re-exported from (sigil error)

Format a stack trace as a string.

By default, only shows frames with named functions, hiding anonymous lambdas to reduce noise from macro expansion and internal implementation. Pass #t to show all frames including anonymous ones.

(format-stack-trace (exception-stack-trace exn))
; =>   "0: my-function\n     at main.sgl:42:5\n  ..."

(format-stack-trace (exception-stack-trace exn) #t)  ; show all

Re-exported from (sigil error)