If you understand this image then you understand what this project is about and what its capable of.
opam makes this installation very easy, even taking care of system
dependencies for you.
In this directory do:
$ opam pin add javascriptcore . -yIf on Linux then this will probably crap out at first. That is fine,
there will be a depext message, follow that message and opam will
take care of all the required system dependencies. Then do the opam pin operation again.
If building this code with the environment varible JSC_ML_DEBUG
defined, then you'll get colored debugging information printed out
from each of the stub functions at the C/C++ layer, for example:
$ JSC_ML_DEBUG= opam pin add javascriptcore . -yOr during development
$ JSC_ML_DEBUG= makeAn example utop session:
─( 16:02:44 )─< command 0 >─────────────────{ counter: 0 }─
utop # #require "javascriptcore";;
─( 16:02:44 )─< command 1 >─────────────────{ counter: 0 }─
utop # let s = new JavaScriptCore.Objects.js_string ~ml_string:"Hello World" ();;
[2016-06-16.16:02:47] [value jsc_ml_make_string_with_ml_str(value)]: Creating JSStringRef from OCaml String
val s : JavaScriptCore.Objects.js_string = <obj>
─( 16:02:55 )─< command 2 >─────────────────{ counter: 0 }─
utop # s#length;;
[2016-06-16.16:02:55] [value jsc_ml_jsc_length(value)]: Getting JSC String length
- : int = 11All of this is of course subject to change as I'm feeling out the APIs but here's one example.
let () =
let vm = new JavaScriptCore.virtual_machine () in
let date = vm#make_js_date () in
if date#has_property "setYear"
then print_endline "setYear is a real property of a JS Object"
else prerr_endline "setYear should have existed"
(Assuming that library was built with the JSC_ML_DEBUG defined)
and all you'd need to compile and run would be:
$ ocamlfind ocamlopt -package javascriptcore e.ml -linkpkg -o T
$ ./T
[2016-06-19.15:57:11] [value jsc_ml_make_vm(value)]: Creating a JSC Global Context, aka a Virtual Machine
[2016-06-19.15:57:11] [value jsc_ml_set_context_name(value, value)]: Setting Context Name
[2016-06-19.15:57:11] [JSStringRef ml_string_to_jsc_string(value)]: Converting OCaml string to JSC string
[2016-06-19.15:57:11] [value jsc_ml_make_date_now(value)]: Creating JSC Date with no arguments
[2016-06-19.15:57:11] [JSStringRef ml_string_to_jsc_string(value)]: Converting OCaml string to JSC string
setYear is a real property of a JS ObjectThis project is built with OCaml 4.03.0, C++11, libc++, JavaScriptCore. It does not use objective-c and works on Linux.
This project has plenty of places to improve your JavaScript, OCaml, C/C++ coding.