alef 0.23.25

Opinionated polyglot binding generator for Rust libraries
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20

    /**
     * {{ ep_method }}.
     * Invokes C FFI: {{ ffi_prefix }}_{{ service_snake }}_ep_{{ ep_method_snake }}
     */
    public {{ return_type }} {{ ep_method }}({{ params_signature }}) {
        try {
            MemorySegment epAddr = LOOKUP.find("{{ ffi_prefix }}_{{ service_snake }}_ep_{{ ep_method_snake }}")
                .or(() -> LOOKUP.find("_{{ ffi_prefix }}_{{ service_snake }}_ep_{{ ep_method_snake }}"))
                .orElseThrow();
            FunctionDescriptor epDesc = FunctionDescriptor.of(
{{ return_layout }}                ValueLayout.ADDRESS       // owner: *mut opaque
{% if descriptor_layouts -%}
{{ descriptor_layouts }}{% endif -%}
            );
            MethodHandle epHandle = LINKER.downcallHandle(epAddr, epDesc);
            {{ invoke_expr }};
        } catch (Throwable e) {
            throw new RuntimeException("Failed to invoke entrypoint", e);
        }
    }