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Josh Berdine 7712de24e5 [ppx_trace] Add trace function and extension to support unhandled exceptions ... Summary: Add support to ppx_trace to rewrite `[%trace]` into a call to the corresponding `Trace` function: ```lang=ocaml val trace : ?call:(pf -> unit) -> ?retn:(pf -> 'a -> unit) -> ?rais:(pf -> exn -> Printexc.raw_backtrace -> unit) -> string -> string -> (unit -> 'a) -> 'a (** [trace ~call ~retn ~rais mod_name fun_name k] either simply invokes [k ()], when not enabled, or else increases the indentation level and emits the [call] message, then invokes [k ()], then decreases the indentation level and either emits the [retn] or [rais] message, depending on whether [k ()] returned normally or exceptionally. *) ``` The main motivation over the existing `Trace.call` and `Trace.retn` is that by packaging them together, unhandled exceptions can be treated better. Reviewed By: jvillard Differential Revision: D23636200 fbshipit-source-id: f61c267fd		4 years ago
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trace	[ppx_trace] Add trace function and extension to support unhandled exceptions	4 years ago
dune	[sledge] Build: Update to ocaml 4.10.0, dune 2.5 and core 0.14	5 years ago
ppx_trace.ml	[ppx_trace] Add trace function and extension to support unhandled exceptions	4 years ago
ppx_trace.mli	[sledge] Rearrange into CLI binary and LLVM-independent library	5 years ago