llvm/Support/MemoryBufferRef.h

0001 //===- MemoryBufferRef.h - Memory Buffer Reference --------------*- C++ -*-===//
0002 //
0003 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
0004 // See https://llvm.org/LICENSE.txt for license information.
0005 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
0006 //
0007 //===----------------------------------------------------------------------===//
0008 //
0009 //  This file defines the MemoryBuffer interface.
0010 //
0011 //===----------------------------------------------------------------------===//
0012
0013 #ifndef LLVM_SUPPORT_MEMORYBUFFERREF_H
0014 #define LLVM_SUPPORT_MEMORYBUFFERREF_H
0015
0016 #include "llvm/ADT/StringRef.h"
0017
0018 namespace llvm {
0019
0020 class MemoryBuffer;
0021
0022 class MemoryBufferRef {
0023   StringRef Buffer;
0024   StringRef Identifier;
0025
0026 public:
0027   MemoryBufferRef() = default;
0028   MemoryBufferRef(const MemoryBuffer &Buffer);
0029   MemoryBufferRef(StringRef Buffer, StringRef Identifier)
0030       : Buffer(Buffer), Identifier(Identifier) {}
0031
0032   StringRef getBuffer() const { return Buffer; }
0033   StringRef getBufferIdentifier() const { return Identifier; }
0034
0035   const char *getBufferStart() const { return Buffer.begin(); }
0036   const char *getBufferEnd() const { return Buffer.end(); }
0037   size_t getBufferSize() const { return Buffer.size(); }
0038
0039   /// Check pointer identity (not value) of identifier and data.
0040   friend bool operator==(const MemoryBufferRef &LHS,
0041                          const MemoryBufferRef &RHS) {
0042     return LHS.Buffer.begin() == RHS.Buffer.begin() &&
0043            LHS.Buffer.end() == RHS.Buffer.end() &&
0044            LHS.Identifier.begin() == RHS.Identifier.begin() &&
0045            LHS.Identifier.end() == RHS.Identifier.end();
0046   }
0047
0048   friend bool operator!=(const MemoryBufferRef &LHS,
0049                          const MemoryBufferRef &RHS) {
0050     return !(LHS == RHS);
0051   }
0052 };
0053
0054 } // namespace llvm
0055
0056 #endif // LLVM_SUPPORT_MEMORYBUFFERREF_H