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https://github.com/capstone-engine/llvm-capstone.git
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d6f9b97bae
Create writer for new JSON format. The new JSON format allows practically all attributes to be defined per target in a universal library however the internal representation only allows one for the time being. For now the write will always write those attributes as default available for all targets (install name, compatability & current version, swift abi, flags e.g. flatnamepace & app exenstion safety) rdar://102076911 Reviewed By: ributzka Differential Revision: https://reviews.llvm.org/D144339
120 lines
2.7 KiB
C++
120 lines
2.7 KiB
C++
//===- PackedVersion.cpp --------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// Implements the Mach-O packed version.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/TextAPI/PackedVersion.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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PackedVersion::operator std::string() const {
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SmallString<32> Str;
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raw_svector_ostream OS(Str);
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print(OS);
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return std::string(Str);
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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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