New branch for vm-tests that use cts-tf framework.

Change-Id: I9927dc09027fc2298a1b1f7ee6c918ed1d36723a
diff --git a/tools/vm-tests-tf/src/util/build/JavacBuildStep.java b/tools/vm-tests-tf/src/util/build/JavacBuildStep.java
new file mode 100644
index 0000000..7d7033f
--- /dev/null
+++ b/tools/vm-tests-tf/src/util/build/JavacBuildStep.java
@@ -0,0 +1,91 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * 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 util.build;
+
+import com.sun.tools.javac.Main;
+
+import java.io.File;
+import java.io.PrintWriter;
+import java.util.HashSet;
+import java.util.Set;
+
+public class JavacBuildStep extends BuildStep {
+
+    private final String destPath;
+    private final String classPath;
+    private final Set<String> sourceFiles = new HashSet<String>();
+    public JavacBuildStep(String destPath, String classPath) {
+        this.destPath = destPath;
+        this.classPath = classPath;
+    }
+    
+    public void addSourceFile(String sourceFile)
+    {
+        sourceFiles.add(sourceFile);
+    }
+    
+    @Override
+    boolean build() {
+        if (super.build())
+        {
+            if (sourceFiles.isEmpty())
+            {
+                return true;
+            }
+            
+            File destFile = new File(destPath);
+            if (!destFile.exists() && !destFile.mkdirs())
+            {
+                System.err.println("failed to create destination dir");
+                return false;
+            }
+            int args = 4;
+            String[] commandLine = new String[sourceFiles.size()+args];
+            commandLine[0] = "-classpath";
+            commandLine[1] = classPath;
+            commandLine[2] = "-d";
+            commandLine[3] = destPath;
+             
+            String[] files = new String[sourceFiles.size()];
+            sourceFiles.toArray(files);
+            
+            System.arraycopy(files, 0, commandLine, args, files.length);
+            
+            
+            return Main.compile(commandLine, new PrintWriter(System.err)) == 0;
+        }
+        return false;
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        // TODO Auto-generated method stub
+        if (super.equals(obj))
+        {
+            JavacBuildStep other = (JavacBuildStep) obj;
+            return destPath.equals(other.destPath) 
+                && classPath.equals(other.classPath)
+                && sourceFiles.equals(other.sourceFiles);
+        }
+        return false;
+    }
+    
+    @Override
+    public int hashCode() {
+        return destPath.hashCode() ^ classPath.hashCode() ^ sourceFiles.hashCode();
+    }
+}