1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
//===--- DarwinSDKInfo.cpp - SDK Information parser for darwin - ----------===//
//
// 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
//
//===----------------------------------------------------------------------===//
#include "clang/Basic/DarwinSDKInfo.h"
#include "llvm/Support/ErrorOr.h"
#include "llvm/Support/JSON.h"
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/Path.h"
using namespace clang;
Optional<VersionTuple> DarwinSDKInfo::RelatedTargetVersionMapping::map(
const VersionTuple &Key, const VersionTuple &MinimumValue,
Optional<VersionTuple> MaximumValue) const {
if (Key < MinimumKeyVersion)
return MinimumValue;
if (Key > MaximumKeyVersion)
return MaximumValue;
auto KV = Mapping.find(Key.normalize());
if (KV != Mapping.end())
return KV->getSecond();
// If no exact entry found, try just the major key version. Only do so when
// a minor version number is present, to avoid recursing indefinitely into
// the major-only check.
if (Key.getMinor())
return map(VersionTuple(Key.getMajor()), MinimumValue, MaximumValue);
// If this a major only key, return None for a missing entry.
return None;
}
Optional<DarwinSDKInfo::RelatedTargetVersionMapping>
DarwinSDKInfo::RelatedTargetVersionMapping::parseJSON(
const llvm::json::Object &Obj, VersionTuple MaximumDeploymentTarget) {
VersionTuple Min = VersionTuple(std::numeric_limits<unsigned>::max());
VersionTuple Max = VersionTuple(0);
VersionTuple MinValue = Min;
llvm::DenseMap<VersionTuple, VersionTuple> Mapping;
for (const auto &KV : Obj) {
if (auto Val = KV.getSecond().getAsString()) {
llvm::VersionTuple KeyVersion;
llvm::VersionTuple ValueVersion;
if (KeyVersion.tryParse(KV.getFirst()) || ValueVersion.tryParse(*Val))
return None;
Mapping[KeyVersion.normalize()] = ValueVersion;
if (KeyVersion < Min)
Min = KeyVersion;
if (KeyVersion > Max)
Max = KeyVersion;
if (ValueVersion < MinValue)
MinValue = ValueVersion;
}
}
if (Mapping.empty())
return None;
return RelatedTargetVersionMapping(
Min, Max, MinValue, MaximumDeploymentTarget, std::move(Mapping));
}
static Optional<VersionTuple> getVersionKey(const llvm::json::Object &Obj,
StringRef Key) {
auto Value = Obj.getString(Key);
if (!Value)
return None;
VersionTuple Version;
if (Version.tryParse(*Value))
return None;
return Version;
}
Optional<DarwinSDKInfo>
DarwinSDKInfo::parseDarwinSDKSettingsJSON(const llvm::json::Object *Obj) {
auto Version = getVersionKey(*Obj, "Version");
if (!Version)
return None;
auto MaximumDeploymentVersion =
getVersionKey(*Obj, "MaximumDeploymentTarget");
if (!MaximumDeploymentVersion)
return None;
llvm::DenseMap<OSEnvPair::StorageType, Optional<RelatedTargetVersionMapping>>
VersionMappings;
if (const auto *VM = Obj->getObject("VersionMap")) {
// FIXME: Generalize this out beyond iOS-deriving targets.
// Look for ios_<targetos> version mapping for targets that derive from ios.
for (const auto &KV : *VM) {
auto Pair = StringRef(KV.getFirst()).split("_");
if (Pair.first.compare_insensitive("ios") == 0) {
llvm::Triple TT(llvm::Twine("--") + Pair.second.lower());
if (TT.getOS() != llvm::Triple::UnknownOS) {
auto Mapping = RelatedTargetVersionMapping::parseJSON(
*KV.getSecond().getAsObject(), *MaximumDeploymentVersion);
if (Mapping)
VersionMappings[OSEnvPair(llvm::Triple::IOS,
llvm::Triple::UnknownEnvironment,
TT.getOS(),
llvm::Triple::UnknownEnvironment)
.Value] = std::move(Mapping);
}
}
}
if (const auto *Mapping = VM->getObject("macOS_iOSMac")) {
auto VersionMap = RelatedTargetVersionMapping::parseJSON(
*Mapping, *MaximumDeploymentVersion);
if (!VersionMap)
return None;
VersionMappings[OSEnvPair::macOStoMacCatalystPair().Value] =
std::move(VersionMap);
}
if (const auto *Mapping = VM->getObject("iOSMac_macOS")) {
auto VersionMap = RelatedTargetVersionMapping::parseJSON(
*Mapping, *MaximumDeploymentVersion);
if (!VersionMap)
return None;
VersionMappings[OSEnvPair::macCatalystToMacOSPair().Value] =
std::move(VersionMap);
}
}
return DarwinSDKInfo(std::move(*Version),
std::move(*MaximumDeploymentVersion),
std::move(VersionMappings));
}
Expected<Optional<DarwinSDKInfo>>
clang::parseDarwinSDKInfo(llvm::vfs::FileSystem &VFS, StringRef SDKRootPath) {
llvm::SmallString<256> Filepath = SDKRootPath;
llvm::sys::path::append(Filepath, "SDKSettings.json");
llvm::ErrorOr<std::unique_ptr<llvm::MemoryBuffer>> File =
VFS.getBufferForFile(Filepath);
if (!File) {
// If the file couldn't be read, assume it just doesn't exist.
return None;
}
Expected<llvm::json::Value> Result =
llvm::json::parse(File.get()->getBuffer());
if (!Result)
return Result.takeError();
if (const auto *Obj = Result->getAsObject()) {
if (auto SDKInfo = DarwinSDKInfo::parseDarwinSDKSettingsJSON(Obj))
return std::move(SDKInfo);
}
return llvm::make_error<llvm::StringError>("invalid SDKSettings.json",
llvm::inconvertibleErrorCode());
}
|
