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//===- IPDBStreamData.h - Base interface for PDB Stream Data ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_DEBUGINFO_PDB_RAW_IPDBSTREAMDATA_H
#define LLVM_DEBUGINFO_PDB_RAW_IPDBSTREAMDATA_H
#include "llvm/ADT/ArrayRef.h"
#include "llvm/Support/Endian.h"
namespace llvm {
namespace pdb {
/// IPDBStream abstracts the notion of PDB stream data. Although we already
/// have another stream abstraction (namely in the form of StreamInterface
/// and MappedBlockStream), they assume that the stream data is referenced
/// the same way. Namely, by looking in the directory to get the list of
/// stream blocks, and by looking in the array of stream lengths to get the
/// length. This breaks down for the directory itself, however, since its
/// length and list of blocks are stored elsewhere. By abstracting the
/// notion of stream data further, we can use a MappedBlockStream to read
/// from the directory itself, or from an indexed stream which references
/// the directory.
class IPDBStreamData {
public:
virtual ~IPDBStreamData() {}
virtual uint32_t getLength() = 0;
virtual ArrayRef<support::ulittle32_t> getStreamBlocks() = 0;
};
}
}
#endif
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