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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
//===-- ClangInstallAPI.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
//
//===----------------------------------------------------------------------===//
//
// This is the entry point to clang-installapi; it is a wrapper
// for functionality in the InstallAPI clang library.
//
//===----------------------------------------------------------------------===//
#include "Options.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/DiagnosticFrontend.h"
#include "clang/Driver/Driver.h"
#include "clang/Driver/DriverDiagnostic.h"
#include "clang/Driver/Tool.h"
#include "clang/Frontend/TextDiagnosticPrinter.h"
#include "clang/InstallAPI/Frontend.h"
#include "clang/InstallAPI/FrontendRecords.h"
#include "clang/InstallAPI/MachO.h"
#include "clang/Tooling/Tooling.h"
#include "llvm/ADT/ArrayRef.h"
#include "llvm/Option/Option.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/Support/LLVMDriver.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/Signals.h"
#include "llvm/TargetParser/Host.h"
#include <memory>
using namespace clang;
using namespace clang::installapi;
using namespace clang::driver::options;
using namespace llvm::opt;
using namespace llvm::MachO;
static bool runFrontend(StringRef ProgName, bool Verbose,
InstallAPIContext &Ctx,
llvm::vfs::InMemoryFileSystem *FS,
const ArrayRef<std::string> InitialArgs) {
std::unique_ptr<llvm::MemoryBuffer> ProcessedInput = createInputBuffer(Ctx);
// Skip invoking cc1 when there are no header inputs.
if (!ProcessedInput)
return true;
if (Verbose)
llvm::errs() << getName(Ctx.Type) << " Headers:\n"
<< ProcessedInput->getBuffer() << "\n\n";
std::string InputFile = ProcessedInput->getBufferIdentifier().str();
FS->addFile(InputFile, /*ModTime=*/0, std::move(ProcessedInput));
// Reconstruct arguments with unique values like target triple or input
// headers.
std::vector<std::string> Args = {ProgName.data(), "-target",
Ctx.Slice->getTriple().str().c_str()};
llvm::copy(InitialArgs, std::back_inserter(Args));
Args.push_back(InputFile);
// Create & run invocation.
clang::tooling::ToolInvocation Invocation(
std::move(Args), std::make_unique<InstallAPIAction>(Ctx), Ctx.FM);
return Invocation.run();
}
static bool run(ArrayRef<const char *> Args, const char *ProgName) {
// Setup Diagnostics engine.
IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
const llvm::opt::OptTable &ClangOpts = clang::driver::getDriverOptTable();
unsigned MissingArgIndex, MissingArgCount;
llvm::opt::InputArgList ParsedArgs = ClangOpts.ParseArgs(
ArrayRef(Args).slice(1), MissingArgIndex, MissingArgCount);
ParseDiagnosticArgs(*DiagOpts, ParsedArgs);
IntrusiveRefCntPtr<DiagnosticsEngine> Diag = new clang::DiagnosticsEngine(
new clang::DiagnosticIDs(), DiagOpts.get(),
new clang::TextDiagnosticPrinter(llvm::errs(), DiagOpts.get()));
// Create file manager for all file operations and holding in-memory generated
// inputs.
llvm::IntrusiveRefCntPtr<llvm::vfs::OverlayFileSystem> OverlayFileSystem(
new llvm::vfs::OverlayFileSystem(llvm::vfs::getRealFileSystem()));
llvm::IntrusiveRefCntPtr<llvm::vfs::InMemoryFileSystem> InMemoryFileSystem(
new llvm::vfs::InMemoryFileSystem);
OverlayFileSystem->pushOverlay(InMemoryFileSystem);
IntrusiveRefCntPtr<clang::FileManager> FM(
new FileManager(clang::FileSystemOptions(), OverlayFileSystem));
// Set up driver to parse input arguments.
auto DriverArgs = llvm::ArrayRef(Args).slice(1);
clang::driver::Driver Driver(ProgName, llvm::sys::getDefaultTargetTriple(),
*Diag, "clang installapi tool");
auto TargetAndMode =
clang::driver::ToolChain::getTargetAndModeFromProgramName(ProgName);
Driver.setTargetAndMode(TargetAndMode);
bool HasError = false;
llvm::opt::InputArgList ArgList =
Driver.ParseArgStrings(DriverArgs, /*UseDriverMode=*/true, HasError);
if (HasError)
return EXIT_FAILURE;
Driver.setCheckInputsExist(false);
// Capture InstallAPI specific options and diagnose any option errors.
Options Opts(*Diag, FM.get(), ArgList);
if (Diag->hasErrorOccurred())
return EXIT_FAILURE;
InstallAPIContext Ctx = Opts.createContext();
if (Diag->hasErrorOccurred())
return EXIT_FAILURE;
// Set up compilation.
std::unique_ptr<CompilerInstance> CI(new CompilerInstance());
CI->setFileManager(FM.get());
CI->createDiagnostics();
if (!CI->hasDiagnostics())
return EXIT_FAILURE;
// Execute and gather AST results.
// An invocation is ran for each unique target triple and for each header
// access level.
Records FrontendResults;
for (const auto &[Targ, Trip] : Opts.DriverOpts.Targets) {
for (const HeaderType Type :
{HeaderType::Public, HeaderType::Private, HeaderType::Project}) {
Ctx.Slice = std::make_shared<FrontendRecordsSlice>(Trip);
Ctx.Type = Type;
if (!runFrontend(ProgName, Opts.DriverOpts.Verbose, Ctx,
InMemoryFileSystem.get(), Opts.getClangFrontendArgs()))
return EXIT_FAILURE;
FrontendResults.emplace_back(std::move(Ctx.Slice));
}
}
// After symbols have been collected, prepare to write output.
auto Out = CI->createOutputFile(Ctx.OutputLoc, /*Binary=*/false,
/*RemoveFileOnSignal=*/false,
/*UseTemporary=*/false,
/*CreateMissingDirectories=*/false);
if (!Out)
return EXIT_FAILURE;
// Assign attributes for serialization.
auto Symbols = std::make_unique<SymbolSet>();
for (const auto &FR : FrontendResults) {
SymbolConverter Converter(Symbols.get(), FR->getTarget());
FR->visit(Converter);
}
InterfaceFile IF(std::move(Symbols));
for (const auto &TargetInfo : Opts.DriverOpts.Targets) {
IF.addTarget(TargetInfo.first);
IF.setFromBinaryAttrs(Ctx.BA, TargetInfo.first);
}
// Write output file and perform CI cleanup.
if (auto Err = TextAPIWriter::writeToStream(*Out, IF, Ctx.FT)) {
Diag->Report(diag::err_cannot_open_file) << Ctx.OutputLoc;
CI->clearOutputFiles(/*EraseFiles=*/true);
return EXIT_FAILURE;
}
CI->clearOutputFiles(/*EraseFiles=*/false);
return EXIT_SUCCESS;
}
int clang_installapi_main(int argc, char **argv,
const llvm::ToolContext &ToolContext) {
// Standard set up, so program fails gracefully.
llvm::sys::PrintStackTraceOnErrorSignal(argv[0]);
llvm::PrettyStackTraceProgram StackPrinter(argc, argv);
llvm::llvm_shutdown_obj Shutdown;
if (llvm::sys::Process::FixupStandardFileDescriptors())
return EXIT_FAILURE;
const char *ProgName =
ToolContext.NeedsPrependArg ? ToolContext.PrependArg : ToolContext.Path;
return run(llvm::ArrayRef(argv, argc), ProgName);
}
|
