Added example for translation builder, language checks for MBart and M2M100

examples/translation_builder.rs

@@ -0,0 +1,38 @@
+// Copyright 2018-2020 The HuggingFace Inc. team.
+// Copyright 2020 Marian Team Authors
+// Copyright 2019-2020 Guillaume Becquin
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//     http://www.apache.org/licenses/LICENSE-2.0
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+extern crate anyhow;
+
+use rust_bert::pipelines::common::ModelType;
+use rust_bert::pipelines::translation::{Language, TranslationModelBuilder};
+use tch::Device;
+
+fn main() -> anyhow::Result<()> {
+    let model = TranslationModelBuilder::new()
+        .with_device(Device::cuda_if_available())
+        // .with_model_type(ModelType::Marian)
+        .with_large_model()
+        .with_source_languages(vec![Language::English])
+        .with_target_languages(vec![Language::French])
+        .create_model()?;
+
+    let input_context_1 = "The quick brown fox jumps over the lazy dog";
+    let input_context_2 = "The dog did not wake up";
+
+    let output = model.translate(&[input_context_1, input_context_2], None, Language::French)?;
+
+    for sentence in output {
+        println!("{}", sentence);
+    }
+    Ok(())
+}