LLVM 17.0.0git
PackedVersion.cpp
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1//===- PackedVersion.cpp --------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// Implements the Mach-O packed version.
10//
11//===----------------------------------------------------------------------===//
12
16#include "llvm/Support/Format.h"
18
19namespace llvm {
20namespace MachO {
21
23 Version = 0;
24
25 if (Str.empty())
26 return false;
27
29 SplitString(Str, Parts, ".");
30
31 if (Parts.size() > 3)
32 return false;
33
34 unsigned long long Num;
35 if (getAsUnsignedInteger(Parts[0], 10, Num))
36 return false;
37
38 if (Num > UINT16_MAX)
39 return false;
40
41 Version = Num << 16;
42
43 for (unsigned i = 1, ShiftNum = 8; i < Parts.size(); ++i, ShiftNum -= 8) {
44 if (getAsUnsignedInteger(Parts[i], 10, Num))
45 return false;
46
47 if (Num > UINT8_MAX)
48 return false;
49
50 Version |= (Num << ShiftNum);
51 }
52
53 return true;
54}
55
56std::pair<bool, bool> PackedVersion::parse64(StringRef Str) {
57 bool Truncated = false;
58 Version = 0;
59
60 if (Str.empty())
61 return std::make_pair(false, Truncated);
62
64 SplitString(Str, Parts, ".");
65
66 if (Parts.size() > 5)
67 return std::make_pair(false, Truncated);
68
69 unsigned long long Num;
70 if (getAsUnsignedInteger(Parts[0], 10, Num))
71 return std::make_pair(false, Truncated);
72
73 if (Num > 0xFFFFFFULL)
74 return std::make_pair(false, Truncated);
75
76 if (Num > 0xFFFFULL) {
77 Num = 0xFFFFULL;
78 Truncated = true;
79 }
80 Version = Num << 16;
81
82 for (unsigned i = 1, ShiftNum = 8; i < Parts.size() && i < 3;
83 ++i, ShiftNum -= 8) {
84 if (getAsUnsignedInteger(Parts[i], 10, Num))
85 return std::make_pair(false, Truncated);
86
87 if (Num > 0x3FFULL)
88 return std::make_pair(false, Truncated);
89
90 if (Num > 0xFFULL) {
91 Num = 0xFFULL;
92 Truncated = true;
93 }
94 Version |= (Num << ShiftNum);
95 }
96
97 if (Parts.size() > 3)
98 Truncated = true;
99
100 return std::make_pair(true, Truncated);
101}
102
104 OS << format("%d", getMajor());
105 if (getMinor() || getSubminor())
106 OS << format(".%d", getMinor());
107 if (getSubminor())
108 OS << format(".%d", getSubminor());
109}
110
111} // end namespace MachO.
112} // end namespace llvm.
This file defines the SmallVector class.
This file contains some functions that are useful when dealing with strings.
void print(raw_ostream &OS) const
unsigned getMinor() const
Retrieve the minor version number, if provided.
Definition: PackedVersion.h:40
bool parse32(StringRef Str)
std::pair< bool, bool > parse64(StringRef Str)
unsigned getSubminor() const
Retrieve the subminor version number, if provided.
Definition: PackedVersion.h:43
unsigned getMajor() const
Retrieve the major version number.
Definition: PackedVersion.h:37
size_t size() const
Definition: SmallVector.h:91
This is a 'vector' (really, a variable-sized array), optimized for the case when the array is small.
Definition: SmallVector.h:1200
StringRef - Represent a constant reference to a string, i.e.
Definition: StringRef.h:50
This class implements an extremely fast bulk output stream that can only output to a stream.
Definition: raw_ostream.h:52
This is an optimization pass for GlobalISel generic memory operations.
Definition: AddressRanges.h:18
format_object< Ts... > format(const char *Fmt, const Ts &... Vals)
These are helper functions used to produce formatted output.
Definition: Format.h:124
bool getAsUnsignedInteger(StringRef Str, unsigned Radix, unsigned long long &Result)
Helper functions for StringRef::getAsInteger.
Definition: StringRef.cpp:492