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Faraday is a library for writing fast and memory-efficient serializers. Its
core type and related operation gives the user fine-grained control over
copying and allocation behavior while serializing user-defined types, and
presents the output in a form that makes it possible to use vectorized write
operations, such as the writev system call, or any other platform or
application-specific output APIs.
Install the library and its depenencies via OPAM:
opam install faraday
Like its sister project Angstrom, Faraday is written with network protocols
and serialization formats in mind. As such, its source distribution inclues
implementations of various RFCs that are illustrative of real-world
applications of the library. This includes a JSON serializer.
In addition, it's appropriate here to include a serializer for the simple
arithmetic expression language described in Angstrom's README.
open Faraday type 'a binop = [ | `Sub of 'a * 'a | `Add of 'a * 'a | `Div of 'a * 'a | `Mul of 'a * 'a ] ;; type t = [ `Num of int | t binop ] let rec serialize ?(prec=0) t expr = match expr with | `Num n -> write_string t (Printf.sprintf "%d" n) | #binop as binop -> let prec', op, l, r = match binop with | `Sub(l, r) -> 2, '-', l, r | `Add(l, r) -> 3, '+', l, r | `Div(l, r) -> 4, '/', l, r | `Mul(l, r) -> 5, '*', l, r in if prec' < prec then write_char t '('; serialize t ~prec:prec' l; write_char t op; serialize t ~prec:prec' r; if prec' < prec then write_char t ')' let to_string expr = let t = create 0x1000 in serialize t expr; serialize_to_string t
To install development dependencies, pin the package from the root of the
opam pin add -n faraday . opam install --deps-only faraday
After this, you may install a development version of the library using the
install command as usual.
For building and running the tests during development, you will need to install
opam install alcotest make test
BSD3, see LICENSE file for its text.