Add initial Rust rules to Bazel.

Todo:
* Implement rust_bench_test for running benchmarks
* Enable rust_test to depend solely on a rust_library (since many projects
  intermix #[test] methods in lib source).
* Improve error checking and handling and prevent rust_binary from directly
  depending on cc_library.
* Implement rust_doc for generating rustdoc.

--
MOS_MIGRATED_REVID=96297772

1 files changed, 31 insertions, 0 deletions

diff --git a/examples/rust/hello_lib/src/greeter.rs b/examples/rust/hello_lib/src/greeter.rs
new file mode 100644
index 0000000000..be59ff888d
--- /dev/null
+++ b/examples/rust/hello_lib/src/greeter.rs
@@ -0,0 +1,31 @@
+// Copyright 2015 Google Inc. All rights reserved.
+//
+// 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.
+
+pub struct Greeter {
+    greeting: String,
+}
+
+impl Greeter {
+    pub fn new(greeting: &str) -> Greeter {
+        Greeter { greeting: greeting.to_string(), }
+    }
+
+    pub fn greeting(&self, thing: &str) -> String {
+        format!("{} {}", &self.greeting, thing)
+    }
+
+    pub fn greet(&self, thing: &str) {
+        println!("{} {}", &self.greeting, thing);
+    }
+}