1 files changed, 93 insertions, 0 deletions
diff --git a/src/java_tools/buildjar/java/com/google/devtools/build/java/turbine/javac/JavacTurbineCompiler.java b/src/java_tools/buildjar/java/com/google/devtools/build/java/turbine/javac/JavacTurbineCompiler.java
new file mode 100644
index 0000000000..af697a833d
--- /dev/null
+++ b/src/java_tools/buildjar/java/com/google/devtools/build/java/turbine/javac/JavacTurbineCompiler.java
@@ -0,0 +1,93 @@
+// Copyright 2016 The Bazel Authors. 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.java.turbine.javac;
+
+import com.google.common.collect.ImmutableMap;
+import com.google.devtools.build.buildjar.javac.plugins.dependency.StrictJavaDepsPlugin;
+import com.google.devtools.build.java.turbine.javac.ZipOutputFileManager.OutputFileObject;
+
+import com.sun.tools.javac.file.CacheFSInfo;
+import com.sun.tools.javac.main.Arguments;
+import com.sun.tools.javac.main.CommandLine;
+import com.sun.tools.javac.main.JavaCompiler;
+import com.sun.tools.javac.util.Context;
+import com.sun.tools.javac.util.Log;
+
+import java.io.IOException;
+import java.io.PrintWriter;
+import java.io.StringWriter;
+import java.nio.file.Path;
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.Map;
+
+import javax.annotation.Nullable;
+import javax.tools.JavaFileManager;
+import javax.tools.StandardLocation;
+
+/** Performs a javac-based turbine compilation given a {@link JavacTurbineCompileRequest}. */
+public class JavacTurbineCompiler {
+
+  static JavacTurbineCompileResult compile(JavacTurbineCompileRequest request) throws IOException {
+
+    Map<String, OutputFileObject> files = new LinkedHashMap<>();
+    boolean success;
+    StringWriter sw = new StringWriter();
+    Context context = new Context();
+
+    try (PrintWriter pw = new PrintWriter(sw)) {
+      ZipOutputFileManager.preRegister(context, files);
+      setupContext(context, request.strictJavaDepsPlugin());
+      CacheFSInfo.preRegister(context);
+
+      context.put(Log.outKey, pw);
+
+      ZipOutputFileManager fm = (ZipOutputFileManager) context.get(JavaFileManager.class);
+      fm.setLocationFromPaths(StandardLocation.SOURCE_PATH, Collections.<Path>emptyList());
+      fm.setLocationFromPaths(StandardLocation.CLASS_PATH, request.classPath());
+      fm.setLocationFromPaths(StandardLocation.PLATFORM_CLASS_PATH, request.bootClassPath());
+      fm.setLocationFromPaths(
+          StandardLocation.ANNOTATION_PROCESSOR_PATH, request.processorClassPath());
+
+      String[] javacArgArray = request.javacOptions().toArray(new String[0]);
+      javacArgArray = CommandLine.parse(javacArgArray);
+
+      Arguments args = Arguments.instance(context);
+      args.init("turbine", javacArgArray);
+
+      fm.setContext(context);
+      fm.handleOptions(args.getDeferredFileManagerOptions());
+
+      JavaCompiler comp = JavaCompiler.instance(context);
+      if (request.strictJavaDepsPlugin() != null) {
+        request.strictJavaDepsPlugin().init(context, Log.instance(context), comp);
+      }
+
+      try {
+        comp.compile(args.getFileObjects(), args.getClassNames(), null);
+        success = comp.errorCount() == 0;
+      } catch (Throwable t) {
+        t.printStackTrace(pw);
+        success = false;
+      }
+    }
+
+    return new JavacTurbineCompileResult(ImmutableMap.copyOf(files), success, sw, context);
+  }
+
+  static void setupContext(Context context, @Nullable StrictJavaDepsPlugin sjd) {
+    JavacTurbineJavaCompiler.preRegister(context, sjd);
+  }
+}