Hello everyone,
I am interested to know which programming languages can be called from a Chapel program (except C)? For example, if I need to call a function that is not available in Chapel (e.g., reading JSON files), with which programing languages can I develop a program and call it in my Chapel program to do this task? Thank you in advance!
Hi -
Please see Technical Notes — Chapel Documentation 1.24 -- we have some C, Fortran, and Python interoperability.
In terms of calling other code from Chapel, we can call C code relatively easily. Usually other languages have a way to declare something to be callable from C and then we can use the C interoperability of Chapel to call these functions. If that is not the case, you might be able to use separate programs that communicate through files, a pipe, or ZMQ sockets (to name a few). Chapel has some Protocol Buffers support that might be useful in language interoperability settings -- see Protocol Buffers Support in Chapel — Chapel Documentation 1.24 .
Also, there is already some support for reading JSON. We are working on the API design for json support, but you can read a JSON type with readf("%jt", variable) and it includes support for records, map, and list. See for example this test code: chapel/json.chpl at main · chapel-lang/chapel · GitHub .
Thank you so much Michael for your comments. I appreciate them!
Marjan —
If you have specific interoperability scenarios that you're trying to express and aren't able to sort them out, let us know and we'll help out to the best of our ability.
-Brad
Thank you Brad for the support. Before starting my Ph.D. project, I am trying to figure out which programming languages can be used with Chapel. The reason for this is just in case that I need a specific function and the Chapel does not support it (So, I can call libraries developed for that function but in other programming languages inside my Chapel code).