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@Synchronized
private fun findLibraryName(componentName: String): String {
val libOverride = System.getProperty("uniffi.component.$componentName.libraryOverride")
if (libOverride != null) {
return libOverride
}
return "{{ config.cdylib_name() }}"
}
private inline fun <reified Lib : Library> loadIndirect(
componentName: String
): Lib {
return Native.load<Lib>(findLibraryName(componentName), Lib::class.java)
}
// A JNA Library to expose the extern-C FFI definitions.
// This is an implementation detail which will be called internally by the public API.
internal interface _UniFFILib : Library {
companion object {
internal val INSTANCE: _UniFFILib by lazy {
loadIndirect<_UniFFILib>(componentName = "{{ ci.namespace() }}")
.also { lib: _UniFFILib ->
uniffiCheckContractApiVersion(lib)
uniffiCheckApiChecksums(lib)
{% for fn in self.initialization_fns() -%}
{{ fn }}(lib)
{% endfor -%}
}
}
}
{% for func in ci.iter_ffi_function_definitions() -%}
fun {{ func.name() }}(
{%- call kt::arg_list_ffi_decl(func) %}
): {% match func.return_type() %}{% when Some with (return_type) %}{{ return_type.borrow()|ffi_type_name_by_value }}{% when None %}Unit{% endmatch %}
{% endfor %}
}
private fun uniffiCheckContractApiVersion(lib: _UniFFILib) {
// Get the bindings contract version from our ComponentInterface
val bindings_contract_version = {{ ci.uniffi_contract_version() }}
// Get the scaffolding contract version by calling the into the dylib
val scaffolding_contract_version = lib.{{ ci.ffi_uniffi_contract_version().name() }}()
if (bindings_contract_version != scaffolding_contract_version) {
throw RuntimeException("UniFFI contract version mismatch: try cleaning and rebuilding your project")
}
}
@Suppress("UNUSED_PARAMETER")
private fun uniffiCheckApiChecksums(lib: _UniFFILib) {
{%- for (name, expected_checksum) in ci.iter_checksums() %}
if (lib.{{ name }}() != {{ expected_checksum }}.toShort()) {
throw RuntimeException("UniFFI API checksum mismatch: try cleaning and rebuilding your project")
}
{%- endfor %}
}
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