1 files changed, 33 insertions, 0 deletions
diff --git a/third_party/rust/uniffi_bindgen/src/bindings/python/templates/StringHelper.py b/third_party/rust/uniffi_bindgen/src/bindings/python/templates/StringHelper.py
new file mode 100644
index 0000000000..40890b6abc
--- /dev/null
+++ b/third_party/rust/uniffi_bindgen/src/bindings/python/templates/StringHelper.py
@@ -0,0 +1,33 @@
+class _UniffiConverterString:
+    @staticmethod
+    def check(value):
+        if not isinstance(value, str):
+            raise TypeError("argument must be str, not {}".format(type(value).__name__))
+        return value
+
+    @staticmethod
+    def read(buf):
+        size = buf.read_i32()
+        if size < 0:
+            raise InternalError("Unexpected negative string length")
+        utf8_bytes = buf.read(size)
+        return utf8_bytes.decode("utf-8")
+
+    @staticmethod
+    def write(value, buf):
+        value = _UniffiConverterString.check(value)
+        utf8_bytes = value.encode("utf-8")
+        buf.write_i32(len(utf8_bytes))
+        buf.write(utf8_bytes)
+
+    @staticmethod
+    def lift(buf):
+        with buf.consume_with_stream() as stream:
+            return stream.read(stream.remaining()).decode("utf-8")
+
+    @staticmethod
+    def lower(value):
+        value = _UniffiConverterString.check(value)
+        with _UniffiRustBuffer.alloc_with_builder() as builder:
+            builder.write(value.encode("utf-8"))
+            return builder.finalize()