From caee0dccffb77a003681345ab3281bcf8684526c Mon Sep 17 00:00:00 2001
From: Chris Lattner <sabre@nondot.org>
Date: Sun, 22 Apr 2007 06:23:29 +0000
Subject: Initial support for reading bitcode files.  They currently only read
 types, the type symtab, and global/function protos, and are missing the
 important size optimization, but it is a place to start.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@36330 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Bitcode/Reader/BitcodeReader.h | 66 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 lib/Bitcode/Reader/BitcodeReader.h

(limited to 'lib/Bitcode/Reader/BitcodeReader.h')

diff --git a/lib/Bitcode/Reader/BitcodeReader.h b/lib/Bitcode/Reader/BitcodeReader.h
new file mode 100644
index 0000000000..a92f0ac4c7
--- /dev/null
+++ b/lib/Bitcode/Reader/BitcodeReader.h
@@ -0,0 +1,66 @@
+//===- BitcodeReader.h - Internal BitcodeReader impl ------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Chris Lattner and is distributed under
+// the University of Illinois Open Source License.  See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This header defines the BitcodeReader class.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef BITCODE_READER_H
+#define BITCODE_READER_H
+
+#include "llvm/AbstractTypeUser.h"
+#include "llvm/ModuleProvider.h"
+#include "../LLVMBitCodes.h"
+#include <vector>
+
+namespace llvm {
+  class BitstreamReader;
+
+class BitcodeReader : public ModuleProvider {
+  const char *ErrorString;
+  
+  std::vector<PATypeHolder> TypeList;
+public:
+  virtual ~BitcodeReader() {}
+  
+  virtual void FreeState() {}
+  
+  virtual bool materializeFunction(Function *F, std::string *ErrInfo = 0) {
+    // FIXME: TODO
+    return false;
+  }
+  
+  virtual Module *materializeModule(std::string *ErrInfo = 0) {
+    // FIXME: TODO
+    //if (ParseAllFunctionBodies(ErrMsg))
+    //  return 0;
+    return TheModule;
+  }
+  
+  bool Error(const char *Str) {
+    ErrorString = Str;
+    return true;
+  }
+  const char *getErrorString() const { return ErrorString; }
+  
+  /// @brief Main interface to parsing a bitcode buffer.
+  /// @returns true if an error occurred.
+  bool ParseBitcode(unsigned char *Buf, unsigned Length,
+                    const std::string &ModuleID);
+private:
+  const Type *getTypeByID(unsigned ID, bool isTypeTable = false);
+  
+  bool ParseModule(BitstreamReader &Stream, const std::string &ModuleID);
+  bool ParseTypeTable(BitstreamReader &Stream);
+  bool ParseTypeSymbolTable(BitstreamReader &Stream);
+};
+  
+} // End llvm namespace
+
+#endif
-- 
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