Split Serialization.h into separate headers: Serialize.h and

Deserialize.h Serialization.h now includes trait speciailizations for
unsigned long, etc.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@43307 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 74 insertions, 0 deletions

diff --git a/include/llvm/Bitcode/Deserialize.h b/include/llvm/Bitcode/Deserialize.h
new file mode 100644
index 0000000000..6ee09aaa34
--- /dev/null
+++ b/include/llvm/Bitcode/Deserialize.h
@@ -0,0 +1,74 @@
+//=- Deserialize.h - Generic Object Deserialization from Bitcode --*- C++ -*-=//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Ted Kremenek and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file defines the interface for generic object deserialization from
+// LLVM bitcode.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_BITCODE_SERIALIZE_INPUT
+#define LLVM_BITCODE_SERIALIZE_INPUT
+
+#include "llvm/Bitcode/BitstreamReader.h"
+#include "llvm/Bitcode/Serialization.h"
+#include <vector>
+
+namespace llvm {
+  
+class Deserializer {  
+  BitstreamReader& Stream;
+  SmallVector<uint64_t,10> Record;
+  unsigned RecIdx;
+public:
+  Deserializer(BitstreamReader& stream);
+  ~Deserializer();
+  
+  template <typename T>
+  inline T& Read(T& X) {
+    SerializeTrait<T>::Read(*this,X);
+    return X;
+  }
+  
+  template <typename T>
+  inline T* Materialize() {
+    return SerializeTrait<T>::Materialize(*this);
+  }
+    
+  uint64_t ReadInt();
+  bool ReadBool() { return ReadInt() ? true : false; }
+  
+  // FIXME: Substitute a better implementation which calculates the minimum
+  // number of bits needed to serialize the enum.
+  template <typename EnumT>
+  EnumT ReadEnum(unsigned MinVal, unsigned MaxVal) { 
+    return static_cast<EnumT>(ReadInt(32));
+  }
+  
+  char* ReadCStr(char* cstr = NULL, unsigned MaxLen=0, bool isNullTerm=true);
+  void ReadCStr(std::vector<char>& buff, bool isNullTerm=false);
+  
+private:
+  void ReadRecord();
+  
+  inline bool inRecord() { 
+    if (Record.size() > 0) {
+      if (RecIdx >= Record.size()) {
+        RecIdx = 0;
+        Record.clear();
+        return false;
+      }
+      else return true;
+    }
+    else return false;
+  }
+};
+  
+} // end namespace llvm
+
+#endif