Revert "Make libbcc public."

This reverts commit 80232dd16c0affb2afae01cde6c94abf23ac1ba8.
diff --git a/lib/ExecutionEngine/RSScript.h b/lib/ExecutionEngine/RSScript.h
new file mode 100644
index 0000000..1ae9c9d
--- /dev/null
+++ b/lib/ExecutionEngine/RSScript.h
@@ -0,0 +1,110 @@
+/*
+ * Copyright 2012, 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.
+ */
+
+#ifndef BCC_EXECUTION_ENGINE_RS_SCRIPT_H
+#define BCC_EXECUTION_ENGINE_RS_SCRIPT_H
+
+#include <string>
+
+#include <llvm/ADT/SmallVector.h>
+#include <llvm/Support/CodeGen.h>
+
+#include "Script.h"
+
+namespace bcc {
+
+class RSInfo;
+class Source;
+
+class RSScript : public Script {
+public:
+  class SourceDependency {
+  private:
+    std::string mSourceName;
+    uint8_t mSHA1[20];
+
+  public:
+    SourceDependency(const std::string &pSourceName,
+                     const uint8_t *pSHA1);
+
+    inline const std::string &getSourceName() const
+    { return mSourceName; }
+
+    inline const uint8_t *getSHA1Checksum() const
+    { return mSHA1; }
+  };
+  typedef llvm::SmallVectorImpl<SourceDependency *> SourceDependencyListTy;
+
+  // This is one-one mapping with the llvm::CodeGenOpt::Level in
+  // llvm/Support/CodeGen.h. Therefore, value of this type can safely cast
+  // to llvm::CodeGenOpt::Level. This makes RSScript LLVM-free.
+  enum OptimizationLevel {
+    kOptLvl0, // -O0
+    kOptLvl1, // -O1
+    kOptLvl2, // -O2, -Os
+    kOptLvl3  // -O3
+  };
+
+private:
+  llvm::SmallVector<SourceDependency *, 4> mSourceDependencies;
+
+  const RSInfo *mInfo;
+
+  unsigned mCompilerVersion;
+
+  OptimizationLevel mOptimizationLevel;
+
+private:
+  // This will be invoked when the containing source has been reset.
+  virtual bool doReset();
+
+public:
+  RSScript(Source &pSource);
+
+  // Add dependency information for this script given the source named
+  // pSourceName. pSHA1 is the SHA-1 checksum of the given source. Return
+  // false on error.
+  bool addSourceDependency(const std::string &pSourceName,
+                           const uint8_t *pSHA1);
+
+  const SourceDependencyListTy &getSourceDependencies() const
+  { return mSourceDependencies; }
+
+  // Set the associated RSInfo of the script.
+  void setInfo(const RSInfo *pInfo)
+  { mInfo = pInfo; }
+
+  const RSInfo *getInfo() const
+  { return mInfo; }
+
+  void setCompilerVersion(unsigned pCompilerVersion)
+  {  mCompilerVersion = pCompilerVersion; }
+
+  unsigned getCompilerVersion() const
+  {  return mCompilerVersion; }
+
+  void setOptimizationLevel(OptimizationLevel pOptimizationLevel)
+  {  mOptimizationLevel = pOptimizationLevel; }
+
+  OptimizationLevel getOptimizationLevel() const
+  {  return mOptimizationLevel; }
+
+  ~RSScript();
+};
+
+} // end namespace bcc
+
+#endif // BCC_EXECUTION_ENGINE_RS_SCRIPT_H