> On Dec 11, 2015, at 4:33 AM, Geordie Jay via swift-dev <swift-dev@swift.org>
> wrote:
>
> Hi, maybe one of the Apple devs can help out with this quick Q:
>
> To interface with the JNI, we’d presumably need to call swift functions from
> our compiled swift binaries from C (or directly from Java, the result being
> the same). Is there a way to demangle certain symbols in the output binary to
> this effect, or is there another / a better way to access Swift functions
> from C?
Others can probably give a more detailed response, but...
There’s a Swift demangler in Swift’s “Basic” library (lib/Basic/Demangle.cpp),
along with a standalone tool (swift-demangle) you can experiment with. The
information in the mangled name should be complete enough to call, but you’ll
need to match Swift’s calling convention.
If it’s just a specific set of Swift functions you want to call from C, you can
use the @_silgen_name attribute to override the mangled name, and/or make them
@convention(c) to use the C calling convention.
- Doug
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