| //===- PackedVersion.cpp --------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Implements the Mach-O packed version. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/TextAPI/PackedVersion.h" |
| #include "llvm/ADT/SmallString.h" |
| #include "llvm/ADT/SmallVector.h" |
| #include "llvm/ADT/StringExtras.h" |
| #include "llvm/Support/Format.h" |
| #include "llvm/Support/raw_ostream.h" |
| |
| namespace llvm { |
| namespace MachO { |
| |
| bool PackedVersion::parse32(StringRef Str) { |
| Version = 0; |
| |
| if (Str.empty()) |
| return false; |
| |
| SmallVector<StringRef, 3> Parts; |
| SplitString(Str, Parts, "."); |
| |
| if (Parts.size() > 3) |
| return false; |
| |
| unsigned long long Num; |
| if (getAsUnsignedInteger(Parts[0], 10, Num)) |
| return false; |
| |
| if (Num > UINT16_MAX) |
| return false; |
| |
| Version = Num << 16; |
| |
| for (unsigned i = 1, ShiftNum = 8; i < Parts.size(); ++i, ShiftNum -= 8) { |
| if (getAsUnsignedInteger(Parts[i], 10, Num)) |
| return false; |
| |
| if (Num > UINT8_MAX) |
| return false; |
| |
| Version |= (Num << ShiftNum); |
| } |
| |
| return true; |
| } |
| |
| std::pair<bool, bool> PackedVersion::parse64(StringRef Str) { |
| bool Truncated = false; |
| Version = 0; |
| |
| if (Str.empty()) |
| return std::make_pair(false, Truncated); |
| |
| SmallVector<StringRef, 5> Parts; |
| SplitString(Str, Parts, "."); |
| |
| if (Parts.size() > 5) |
| return std::make_pair(false, Truncated); |
| |
| unsigned long long Num; |
| if (getAsUnsignedInteger(Parts[0], 10, Num)) |
| return std::make_pair(false, Truncated); |
| |
| if (Num > 0xFFFFFFULL) |
| return std::make_pair(false, Truncated); |
| |
| if (Num > 0xFFFFULL) { |
| Num = 0xFFFFULL; |
| Truncated = true; |
| } |
| Version = Num << 16; |
| |
| for (unsigned i = 1, ShiftNum = 8; i < Parts.size() && i < 3; |
| ++i, ShiftNum -= 8) { |
| if (getAsUnsignedInteger(Parts[i], 10, Num)) |
| return std::make_pair(false, Truncated); |
| |
| if (Num > 0x3FFULL) |
| return std::make_pair(false, Truncated); |
| |
| if (Num > 0xFFULL) { |
| Num = 0xFFULL; |
| Truncated = true; |
| } |
| Version |= (Num << ShiftNum); |
| } |
| |
| if (Parts.size() > 3) |
| Truncated = true; |
| |
| return std::make_pair(true, Truncated); |
| } |
| |
| void PackedVersion::print(raw_ostream &OS) const { |
| OS << format("%d", getMajor()); |
| if (getMinor() || getSubminor()) |
| OS << format(".%d", getMinor()); |
| if (getSubminor()) |
| OS << format(".%d", getSubminor()); |
| } |
| |
| } // end namespace MachO. |
| } // end namespace llvm. |