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0261cead1a
Add basic infrastructure for reading and writting TBD files (version 1 - 3). The TextAPI library is not used by anything yet (besides the unit tests). Tool support will be added in a separate commit. The TBD format is currently documented in the implementation file (TextStub.cpp). https://reviews.llvm.org/D53945 llvm-svn: 347808
116 lines
2.6 KiB
C++
116 lines
2.6 KiB
C++
//===- llvm/TextAPI/PackedVersion.cpp - PackedVersion -----------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief Implements the Mach-O packed version.
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///
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//===----------------------------------------------------------------------===//
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#include "llvm/TextAPI/MachO/PackedVersion.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringExtras.h"
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#include "llvm/Support/Format.h"
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#include "llvm/Support/raw_ostream.h"
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namespace llvm {
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namespace MachO {
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bool PackedVersion::parse32(StringRef Str) {
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Version = 0;
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if (Str.empty())
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return false;
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SmallVector<StringRef, 3> Parts;
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SplitString(Str, Parts, ".");
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if (Parts.size() > 3)
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return false;
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unsigned long long Num;
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if (getAsUnsignedInteger(Parts[0], 10, Num))
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return false;
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if (Num > UINT16_MAX)
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return false;
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Version = Num << 16;
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for (unsigned i = 1, ShiftNum = 8; i < Parts.size(); ++i, ShiftNum -= 8) {
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if (getAsUnsignedInteger(Parts[i], 10, Num))
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return false;
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if (Num > UINT8_MAX)
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return false;
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Version |= (Num << ShiftNum);
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}
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return true;
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}
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std::pair<bool, bool> PackedVersion::parse64(StringRef Str) {
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bool Truncated = false;
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Version = 0;
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if (Str.empty())
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return std::make_pair(false, Truncated);
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SmallVector<StringRef, 5> Parts;
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SplitString(Str, Parts, ".");
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if (Parts.size() > 5)
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return std::make_pair(false, Truncated);
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unsigned long long Num;
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if (getAsUnsignedInteger(Parts[0], 10, Num))
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return std::make_pair(false, Truncated);
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if (Num > 0xFFFFFFULL)
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return std::make_pair(false, Truncated);
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if (Num > 0xFFFFULL) {
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Num = 0xFFFFULL;
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Truncated = true;
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}
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Version = Num << 16;
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for (unsigned i = 1, ShiftNum = 8; i < Parts.size() && i < 3;
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++i, ShiftNum -= 8) {
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if (getAsUnsignedInteger(Parts[i], 10, Num))
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return std::make_pair(false, Truncated);
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if (Num > 0x3FFULL)
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return std::make_pair(false, Truncated);
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if (Num > 0xFFULL) {
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Num = 0xFFULL;
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Truncated = true;
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}
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Version |= (Num << ShiftNum);
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}
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if (Parts.size() > 3)
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Truncated = true;
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return std::make_pair(true, Truncated);
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}
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void PackedVersion::print(raw_ostream &OS) const {
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OS << format("%d", getMajor());
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if (getMinor() || getSubminor())
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OS << format(".%d", getMinor());
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if (getSubminor())
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OS << format(".%d", getSubminor());
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}
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} // end namespace MachO.
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} // end namespace llvm.
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