1 files changed, 68 insertions, 0 deletions
diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/templates/wrapper.swift b/third_party/rust/uniffi_bindgen/src/bindings/swift/templates/wrapper.swift
new file mode 100644
index 0000000000..c34d348efb
--- /dev/null
+++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/templates/wrapper.swift
@@ -0,0 +1,68 @@
+// This file was autogenerated by some hot garbage in the `uniffi` crate.
+// Trust me, you don't want to mess with it!
+{%- import "macros.swift" as swift %}
+import Foundation
+{%- for imported_class in self.imports() %}
+import {{ imported_class }}
+{%- endfor %}
+
+// Depending on the consumer's build setup, the low-level FFI code
+// might be in a separate module, or it might be compiled inline into
+// this module. This is a bit of light hackery to work with both.
+#if canImport({{ config.ffi_module_name() }})
+import {{ config.ffi_module_name() }}
+#endif
+
+{% include "RustBufferTemplate.swift" %}
+{% include "Helpers.swift" %}
+
+// Public interface members begin here.
+{{ type_helper_code }}
+
+{%- if ci.has_async_fns() %}
+{% include "Async.swift" %}
+{%- endif %}
+
+{%- for func in ci.function_definitions() %}
+{%- include "TopLevelFunctionTemplate.swift" %}
+{%- endfor %}
+
+private enum InitializationResult {
+    case ok
+    case contractVersionMismatch
+    case apiChecksumMismatch
+}
+// Use a global variables to perform the versioning checks. Swift ensures that
+// the code inside is only computed once.
+private var initializationResult: InitializationResult {
+    // Get the bindings contract version from our ComponentInterface
+    let bindings_contract_version = {{ ci.uniffi_contract_version() }}
+    // Get the scaffolding contract version by calling the into the dylib
+    let scaffolding_contract_version = {{ ci.ffi_uniffi_contract_version().name() }}()
+    if bindings_contract_version != scaffolding_contract_version {
+        return InitializationResult.contractVersionMismatch
+    }
+
+    {%- for (name, expected_checksum) in ci.iter_checksums() %}
+    if ({{ name }}() != {{ expected_checksum }}) {
+        return InitializationResult.apiChecksumMismatch
+    }
+    {%- endfor %}
+
+    {% for fn in self.initialization_fns() -%}
+    {{ fn }}()
+    {% endfor -%}
+
+    return InitializationResult.ok
+}
+
+private func uniffiEnsureInitialized() {
+    switch initializationResult {
+    case .ok:
+        break
+    case .contractVersionMismatch:
+        fatalError("UniFFI contract version mismatch: try cleaning and rebuilding your project")
+    case .apiChecksumMismatch:
+        fatalError("UniFFI API checksum mismatch: try cleaning and rebuilding your project")
+    }
+}