1 files changed, 47 insertions, 0 deletions
diff --git a/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/JavacRunnerImpl.java b/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/JavacRunnerImpl.java
new file mode 100644
index 0000000000..a791ad6d03
--- /dev/null
+++ b/src/java_tools/buildjar/java/com/google/devtools/build/buildjar/javac/JavacRunnerImpl.java
@@ -0,0 +1,47 @@
+// Copyright 2014 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.
+
+package com.google.devtools.build.buildjar.javac;
+
+import com.google.devtools.build.buildjar.javac.plugins.BlazeJavaCompilerPlugin;
+
+import com.sun.tools.javac.main.Main.Result;
+
+import java.io.PrintWriter;
+import java.util.List;
+
+/**
+ * This class wraps a single invocation of Javac. We
+ * invoke javac statically but wrap it with a synchronization.
+ * This is because the same javac cannot be invoked multiple
+ * times in parallel.
+ */
+public class JavacRunnerImpl implements JavacRunner {
+
+  private final List<BlazeJavaCompilerPlugin> plugins;
+
+  /**
+   * Passes extra information to BlazeJavacMain in case strict Java
+   * dependencies are enforced.
+   */
+  public JavacRunnerImpl(List<BlazeJavaCompilerPlugin> plugins) {
+    this.plugins = plugins;
+  }
+
+  @Override
+  public synchronized Result invokeJavac(String[] args, PrintWriter output) {
+    return new BlazeJavacMain(output, plugins).compile(args);
+  }
+
+}