Module `Ecaml.Advice`

The "advice" feature lets you add to the existing definition of a function, by wrapping around the original function a "piece of advice".

Each piece of advice receives the original function and arguments; its result is returned to the caller as if from the original function.

A function may have multiple pieces of advice, which are composed by nesting earlier advice within later advice.

(Info-goto-node "(elisp)Advising Functions")

val around_values : Symbol.t -> Core_kernel.Source_code_position.t -> ?⁠docstring:string -> for_function:Symbol.t -> ?⁠interactive:Defun.Interactive.t -> ((Ecaml__.Import.Value.t list -> Ecaml__.Import.Value.t) -> Ecaml__.Import.Value.t list -> Ecaml__.Import.Value.t) -> unit

around_values ?docstring ?interactive here return_type advice_name f ~for_function defines function advice_name with body f and adds it as advice on for_function.

Compared to around_funcall, around_values provides looser coupling when the advice doesn't need to interact with the arguments or return value of for_function.

val around_funcall : Symbol.t -> Core_kernel.Source_code_position.t -> ?⁠docstring:string -> for_function:Symbol.t -> ?⁠interactive:Defun.Interactive.t -> 'a Funcall.t -> ('a -> 'a) -> unit: around_funcall provides typeful access to the arguments and return value of for_function.

val add_predefined_function : Symbol.t -> for_function:Symbol.t -> unit: (describe-function 'advice-add)

val remove : Symbol.t -> for_function:Symbol.t -> unit: (describe-function 'advice-remove)