vasilito
cb424d7448
verify-patch-sanity.py validates every active recipe .patch has internally- consistent hunk line counts — catching the 'malformed patch at line N' failure at commit/CI/preflight time instead of hours into a cook. This cycle hit that class three times (qtwaylandscanner, sddm, xwayland), each only discovered when cookbook tried to apply the patch. Running it across the repo found 29 latent malformed patches (validated against GNU patch: e.g. relibc/P3-sysv-ipc reproduces 'malformed patch at line 22'). They were harmless only because they sit in vendored recipes (baked, not re- applied) — but would fail on any version-bump re-derivation. --fix recounts the hunk headers (body untouched) and repaired all 29. Wired into build-preflight.sh (Phase 1.0D) and redbear-ci.yml, with a unit test (test-patch-sanity.sh). Skips archived/legacy trees and unvalidatable formats (empty placeholders, bare-@@ git hunks).
558 lines
19 KiB
C++
558 lines
19 KiB
C++
//===- ExtractAPI/ExtractAPIConsumer.cpp ------------------------*- C++ -*-===//
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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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/// \file
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/// This file implements the ExtractAPIAction, and ASTConsumer to collect API
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/// information.
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///
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//===----------------------------------------------------------------------===//
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#include "clang/AST/ASTConcept.h"
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/DeclObjC.h"
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#include "clang/Basic/DiagnosticFrontend.h"
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#include "clang/Basic/FileEntry.h"
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#include "clang/Basic/SourceLocation.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/Basic/TargetInfo.h"
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#include "clang/ExtractAPI/API.h"
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#include "clang/ExtractAPI/APIIgnoresList.h"
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#include "clang/ExtractAPI/ExtractAPIVisitor.h"
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#include "clang/ExtractAPI/FrontendActions.h"
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#include "clang/ExtractAPI/Serialization/SymbolGraphSerializer.h"
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#include "clang/Frontend/ASTConsumers.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/FrontendOptions.h"
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#include "clang/Frontend/MultiplexConsumer.h"
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#include "clang/Index/USRGeneration.h"
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#include "clang/InstallAPI/HeaderFile.h"
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#include "clang/Lex/MacroInfo.h"
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#include "clang/Lex/PPCallbacks.h"
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#include "clang/Lex/Preprocessor.h"
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#include "clang/Lex/PreprocessorOptions.h"
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#include "llvm/ADT/DenseSet.h"
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#include "llvm/ADT/STLExtras.h"
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#include "llvm/ADT/SmallString.h"
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#include "llvm/ADT/SmallVector.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/Support/Casting.h"
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#include "llvm/Support/Error.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Path.h"
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#include "llvm/Support/Regex.h"
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#include "llvm/Support/raw_ostream.h"
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#include <memory>
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#include <optional>
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#include <utility>
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using namespace clang;
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using namespace extractapi;
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namespace {
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std::optional<std::string> getRelativeIncludeName(const CompilerInstance &CI,
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StringRef File,
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bool *IsQuoted = nullptr) {
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assert(CI.hasFileManager() &&
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"CompilerInstance does not have a FileNamager!");
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using namespace llvm::sys;
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const auto &FS = CI.getVirtualFileSystem();
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SmallString<128> FilePath(File.begin(), File.end());
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FS.makeAbsolute(FilePath);
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path::remove_dots(FilePath, true);
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FilePath = path::convert_to_slash(FilePath);
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File = FilePath;
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// Checks whether `Dir` is a strict path prefix of `File`. If so returns
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// the prefix length. Otherwise return 0.
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auto CheckDir = [&](llvm::StringRef Dir) -> unsigned {
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llvm::SmallString<32> DirPath(Dir.begin(), Dir.end());
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FS.makeAbsolute(DirPath);
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path::remove_dots(DirPath, true);
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Dir = DirPath;
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for (auto NI = path::begin(File), NE = path::end(File),
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DI = path::begin(Dir), DE = path::end(Dir);
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/*termination condition in loop*/; ++NI, ++DI) {
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// '.' components in File are ignored.
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while (NI != NE && *NI == ".")
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++NI;
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if (NI == NE)
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break;
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// '.' components in Dir are ignored.
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while (DI != DE && *DI == ".")
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++DI;
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// Dir is a prefix of File, up to '.' components and choice of path
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// separators.
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if (DI == DE)
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return NI - path::begin(File);
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// Consider all path separators equal.
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if (NI->size() == 1 && DI->size() == 1 &&
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path::is_separator(NI->front()) && path::is_separator(DI->front()))
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continue;
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// Special case Apple .sdk folders since the search path is typically a
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// symlink like `iPhoneSimulator14.5.sdk` while the file is instead
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// located in `iPhoneSimulator.sdk` (the real folder).
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if (NI->ends_with(".sdk") && DI->ends_with(".sdk")) {
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StringRef NBasename = path::stem(*NI);
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StringRef DBasename = path::stem(*DI);
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if (DBasename.starts_with(NBasename))
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continue;
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}
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if (*NI != *DI)
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break;
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}
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return 0;
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};
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unsigned PrefixLength = 0;
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// Go through the search paths and find the first one that is a prefix of
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// the header.
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for (const auto &Entry : CI.getHeaderSearchOpts().UserEntries) {
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// Note whether the match is found in a quoted entry.
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if (IsQuoted)
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*IsQuoted = Entry.Group == frontend::Quoted;
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if (auto EntryFile = CI.getFileManager().getOptionalFileRef(Entry.Path)) {
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if (auto HMap = HeaderMap::Create(*EntryFile, CI.getFileManager())) {
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// If this is a headermap entry, try to reverse lookup the full path
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// for a spelled name before mapping.
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StringRef SpelledFilename = HMap->reverseLookupFilename(File);
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if (!SpelledFilename.empty())
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return SpelledFilename.str();
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// No matching mapping in this headermap, try next search entry.
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continue;
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}
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}
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// Entry is a directory search entry, try to check if it's a prefix of File.
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PrefixLength = CheckDir(Entry.Path);
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if (PrefixLength > 0) {
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// The header is found in a framework path, construct the framework-style
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// include name `<Framework/Header.h>`
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if (Entry.IsFramework) {
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SmallVector<StringRef, 4> Matches;
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clang::installapi::HeaderFile::getFrameworkIncludeRule().match(
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File, &Matches);
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// Returned matches are always in stable order.
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if (Matches.size() != 4)
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return std::nullopt;
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return path::convert_to_slash(
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(Matches[1].drop_front(Matches[1].rfind('/') + 1) + "/" +
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Matches[3])
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.str());
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}
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// The header is found in a normal search path, strip the search path
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// prefix to get an include name.
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return path::convert_to_slash(File.drop_front(PrefixLength));
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}
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}
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// Couldn't determine a include name, use full path instead.
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return std::nullopt;
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}
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std::optional<std::string> getRelativeIncludeName(const CompilerInstance &CI,
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FileEntryRef FE,
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bool *IsQuoted = nullptr) {
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return getRelativeIncludeName(CI, FE.getNameAsRequested(), IsQuoted);
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}
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struct LocationFileChecker {
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bool operator()(SourceLocation Loc) {
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// If the loc refers to a macro expansion we need to first get the file
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// location of the expansion.
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auto &SM = CI.getSourceManager();
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auto FileLoc = SM.getFileLoc(Loc);
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FileID FID = SM.getFileID(FileLoc);
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if (FID.isInvalid())
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return false;
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OptionalFileEntryRef File = SM.getFileEntryRefForID(FID);
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if (!File)
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return false;
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if (KnownFileEntries.count(*File))
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return true;
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if (ExternalFileEntries.count(*File))
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return false;
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// Try to reduce the include name the same way we tried to include it.
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bool IsQuoted = false;
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if (auto IncludeName = getRelativeIncludeName(CI, *File, &IsQuoted))
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if (llvm::any_of(KnownFiles,
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[&IsQuoted, &IncludeName](const auto &KnownFile) {
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return KnownFile.first.equals(*IncludeName) &&
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KnownFile.second == IsQuoted;
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})) {
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KnownFileEntries.insert(*File);
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return true;
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}
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// Record that the file was not found to avoid future reverse lookup for
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// the same file.
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ExternalFileEntries.insert(*File);
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return false;
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}
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LocationFileChecker(const CompilerInstance &CI,
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SmallVector<std::pair<SmallString<32>, bool>> &KnownFiles)
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: CI(CI), KnownFiles(KnownFiles), ExternalFileEntries() {
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for (const auto &KnownFile : KnownFiles)
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if (auto FE = CI.getFileManager().getOptionalFileRef(KnownFile.first))
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KnownFileEntries.insert(*FE);
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}
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private:
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const CompilerInstance &CI;
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SmallVector<std::pair<SmallString<32>, bool>> &KnownFiles;
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llvm::DenseSet<const FileEntry *> KnownFileEntries;
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llvm::DenseSet<const FileEntry *> ExternalFileEntries;
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};
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struct BatchExtractAPIVisitor : ExtractAPIVisitor<BatchExtractAPIVisitor> {
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bool shouldDeclBeIncluded(const Decl *D) const {
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bool ShouldBeIncluded = true;
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// Check that we have the definition for redeclarable types.
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if (auto *TD = llvm::dyn_cast<TagDecl>(D))
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ShouldBeIncluded = TD->isThisDeclarationADefinition();
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else if (auto *Interface = llvm::dyn_cast<ObjCInterfaceDecl>(D))
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ShouldBeIncluded = Interface->isThisDeclarationADefinition();
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else if (auto *Protocol = llvm::dyn_cast<ObjCProtocolDecl>(D))
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ShouldBeIncluded = Protocol->isThisDeclarationADefinition();
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ShouldBeIncluded = ShouldBeIncluded && LCF(D->getLocation());
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return ShouldBeIncluded;
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}
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BatchExtractAPIVisitor(LocationFileChecker &LCF, ASTContext &Context,
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APISet &API)
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: ExtractAPIVisitor<BatchExtractAPIVisitor>(Context, API), LCF(LCF) {}
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private:
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LocationFileChecker &LCF;
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};
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class WrappingExtractAPIConsumer : public ASTConsumer {
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public:
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WrappingExtractAPIConsumer(ASTContext &Context, APISet &API)
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: Visitor(Context, API) {}
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void HandleTranslationUnit(ASTContext &Context) override {
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// Use ExtractAPIVisitor to traverse symbol declarations in the context.
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Visitor.TraverseDecl(Context.getTranslationUnitDecl());
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}
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private:
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ExtractAPIVisitor<> Visitor;
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};
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class ExtractAPIConsumer : public ASTConsumer {
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public:
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ExtractAPIConsumer(ASTContext &Context,
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std::unique_ptr<LocationFileChecker> LCF, APISet &API)
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: Visitor(*LCF, Context, API), LCF(std::move(LCF)) {}
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void HandleTranslationUnit(ASTContext &Context) override {
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// Use ExtractAPIVisitor to traverse symbol declarations in the context.
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Visitor.TraverseDecl(Context.getTranslationUnitDecl());
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}
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private:
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BatchExtractAPIVisitor Visitor;
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std::unique_ptr<LocationFileChecker> LCF;
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};
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class MacroCallback : public PPCallbacks {
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public:
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MacroCallback(const SourceManager &SM, APISet &API, Preprocessor &PP)
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: SM(SM), API(API), PP(PP) {}
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void EndOfMainFile() override {
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for (const auto &M : PP.macros()) {
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auto *II = M.getFirst();
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auto MD = PP.getMacroDefinition(II);
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auto *MI = MD.getMacroInfo();
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if (!MI)
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continue;
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// Ignore header guard macros
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if (MI->isUsedForHeaderGuard())
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continue;
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// Ignore builtin macros and ones defined via the command line.
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if (MI->isBuiltinMacro())
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continue;
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auto DefLoc = MI->getDefinitionLoc();
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if (SM.isInPredefinedFile(DefLoc))
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continue;
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auto AssociatedModuleMacros = MD.getModuleMacros();
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StringRef OwningModuleName;
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if (!AssociatedModuleMacros.empty())
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OwningModuleName = AssociatedModuleMacros.back()
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->getOwningModule()
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->getTopLevelModuleName();
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if (!shouldMacroBeIncluded(DefLoc, OwningModuleName))
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continue;
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StringRef Name = II->getName();
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PresumedLoc Loc = SM.getPresumedLoc(DefLoc);
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SmallString<128> USR;
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index::generateUSRForMacro(Name, DefLoc, SM, USR);
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API.createRecord<extractapi::MacroDefinitionRecord>(
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USR, Name, SymbolReference(), Loc,
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DeclarationFragmentsBuilder::getFragmentsForMacro(Name, MI),
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DeclarationFragmentsBuilder::getSubHeadingForMacro(Name),
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SM.isInSystemHeader(DefLoc));
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}
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}
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virtual bool shouldMacroBeIncluded(const SourceLocation &MacroLoc,
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StringRef ModuleName) {
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return true;
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}
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const SourceManager &SM;
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APISet &API;
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Preprocessor &PP;
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};
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class APIMacroCallback : public MacroCallback {
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public:
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APIMacroCallback(const SourceManager &SM, APISet &API, Preprocessor &PP,
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LocationFileChecker &LCF)
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: MacroCallback(SM, API, PP), LCF(LCF) {}
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bool shouldMacroBeIncluded(const SourceLocation &MacroLoc,
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StringRef ModuleName) override {
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// Do not include macros from external files
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return LCF(MacroLoc);
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}
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private:
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LocationFileChecker &LCF;
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};
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std::unique_ptr<llvm::raw_pwrite_stream>
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createAdditionalSymbolGraphFile(CompilerInstance &CI, Twine BaseName) {
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auto OutputDirectory = CI.getFrontendOpts().SymbolGraphOutputDir;
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SmallString<256> FileName;
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llvm::sys::path::append(FileName, OutputDirectory,
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BaseName + ".symbols.json");
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return CI.createOutputFile(
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FileName, /*Binary*/ false, /*RemoveFileOnSignal*/ false,
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/*UseTemporary*/ true, /*CreateMissingDirectories*/ true);
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}
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} // namespace
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void ExtractAPIActionBase::ImplEndSourceFileAction(CompilerInstance &CI) {
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SymbolGraphSerializerOption SerializationOptions;
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SerializationOptions.Compact = !CI.getFrontendOpts().EmitPrettySymbolGraphs;
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SerializationOptions.EmitSymbolLabelsForTesting =
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CI.getFrontendOpts().EmitSymbolGraphSymbolLabelsForTesting;
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if (CI.getFrontendOpts().EmitExtensionSymbolGraphs) {
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auto ConstructOutputFile = [&CI](Twine BaseName) {
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return createAdditionalSymbolGraphFile(CI, BaseName);
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};
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SymbolGraphSerializer::serializeWithExtensionGraphs(
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*OS, *API, IgnoresList, ConstructOutputFile, SerializationOptions);
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} else {
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SymbolGraphSerializer::serializeMainSymbolGraph(*OS, *API, IgnoresList,
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SerializationOptions);
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}
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// Flush the stream and close the main output stream.
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OS.reset();
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}
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std::unique_ptr<ASTConsumer>
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ExtractAPIAction::CreateASTConsumer(CompilerInstance &CI, StringRef InFile) {
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auto ProductName = CI.getFrontendOpts().ProductName;
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if (CI.getFrontendOpts().SymbolGraphOutputDir.empty())
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OS = CI.createDefaultOutputFile(/*Binary*/ false, InFile,
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/*Extension*/ "symbols.json",
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/*RemoveFileOnSignal*/ false,
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/*CreateMissingDirectories*/ true);
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else
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OS = createAdditionalSymbolGraphFile(CI, ProductName);
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if (!OS)
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return nullptr;
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// Now that we have enough information about the language options and the
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// target triple, let's create the APISet before anyone uses it.
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API = std::make_unique<APISet>(
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CI.getTarget().getTriple(),
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CI.getFrontendOpts().Inputs.back().getKind().getLanguage(), ProductName);
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auto LCF = std::make_unique<LocationFileChecker>(CI, KnownInputFiles);
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CI.getPreprocessor().addPPCallbacks(std::make_unique<APIMacroCallback>(
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CI.getSourceManager(), *API, CI.getPreprocessor(), *LCF));
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// Do not include location in anonymous decls.
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PrintingPolicy Policy = CI.getASTContext().getPrintingPolicy();
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Policy.AnonymousTagLocations = false;
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CI.getASTContext().setPrintingPolicy(Policy);
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if (!CI.getFrontendOpts().ExtractAPIIgnoresFileList.empty()) {
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llvm::handleAllErrors(
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APIIgnoresList::create(CI.getFrontendOpts().ExtractAPIIgnoresFileList,
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CI.getFileManager())
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.moveInto(IgnoresList),
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[&CI](const IgnoresFileNotFound &Err) {
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CI.getDiagnostics().Report(
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diag::err_extract_api_ignores_file_not_found)
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<< Err.Path;
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});
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}
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return std::make_unique<ExtractAPIConsumer>(CI.getASTContext(),
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std::move(LCF), *API);
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}
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bool ExtractAPIAction::PrepareToExecuteAction(CompilerInstance &CI) {
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auto &Inputs = CI.getFrontendOpts().Inputs;
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if (Inputs.empty())
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return true;
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if (!CI.hasFileManager())
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if (!CI.createFileManager())
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return false;
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auto Kind = Inputs[0].getKind();
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// Convert the header file inputs into a single input buffer.
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SmallString<256> HeaderContents;
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bool IsQuoted = false;
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for (const FrontendInputFile &FIF : Inputs) {
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if (Kind.isObjectiveC())
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HeaderContents += "#import";
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else
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HeaderContents += "#include";
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StringRef FilePath = FIF.getFile();
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if (auto RelativeName = getRelativeIncludeName(CI, FilePath, &IsQuoted)) {
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if (IsQuoted)
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HeaderContents += " \"";
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else
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HeaderContents += " <";
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HeaderContents += *RelativeName;
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if (IsQuoted)
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HeaderContents += "\"\n";
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else
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HeaderContents += ">\n";
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KnownInputFiles.emplace_back(static_cast<SmallString<32>>(*RelativeName),
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IsQuoted);
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} else {
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HeaderContents += " \"";
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HeaderContents += FilePath;
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HeaderContents += "\"\n";
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KnownInputFiles.emplace_back(FilePath, true);
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}
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}
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if (CI.getHeaderSearchOpts().Verbose)
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CI.getVerboseOutputStream() << getInputBufferName() << ":\n"
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<< HeaderContents << "\n";
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Buffer = llvm::MemoryBuffer::getMemBufferCopy(HeaderContents,
|
|
getInputBufferName());
|
|
|
|
// Set that buffer up as our "real" input in the CompilerInstance.
|
|
Inputs.clear();
|
|
Inputs.emplace_back(Buffer->getMemBufferRef(), Kind, /*IsSystem*/ false);
|
|
|
|
return true;
|
|
}
|
|
|
|
void ExtractAPIAction::EndSourceFileAction() {
|
|
ImplEndSourceFileAction(getCompilerInstance());
|
|
}
|
|
|
|
std::unique_ptr<ASTConsumer>
|
|
WrappingExtractAPIAction::CreateASTConsumer(CompilerInstance &CI,
|
|
StringRef InFile) {
|
|
auto OtherConsumer = WrapperFrontendAction::CreateASTConsumer(CI, InFile);
|
|
if (!OtherConsumer)
|
|
return nullptr;
|
|
|
|
CreatedASTConsumer = true;
|
|
|
|
ProductName = CI.getFrontendOpts().ProductName;
|
|
auto InputFilename = llvm::sys::path::filename(InFile);
|
|
OS = createAdditionalSymbolGraphFile(CI, InputFilename);
|
|
|
|
// Now that we have enough information about the language options and the
|
|
// target triple, let's create the APISet before anyone uses it.
|
|
API = std::make_unique<APISet>(
|
|
CI.getTarget().getTriple(),
|
|
CI.getFrontendOpts().Inputs.back().getKind().getLanguage(), ProductName);
|
|
|
|
CI.getPreprocessor().addPPCallbacks(std::make_unique<MacroCallback>(
|
|
CI.getSourceManager(), *API, CI.getPreprocessor()));
|
|
|
|
// Do not include location in anonymous decls.
|
|
PrintingPolicy Policy = CI.getASTContext().getPrintingPolicy();
|
|
Policy.AnonymousTagLocations = false;
|
|
CI.getASTContext().setPrintingPolicy(Policy);
|
|
|
|
if (!CI.getFrontendOpts().ExtractAPIIgnoresFileList.empty()) {
|
|
llvm::handleAllErrors(
|
|
APIIgnoresList::create(CI.getFrontendOpts().ExtractAPIIgnoresFileList,
|
|
CI.getFileManager())
|
|
.moveInto(IgnoresList),
|
|
[&CI](const IgnoresFileNotFound &Err) {
|
|
CI.getDiagnostics().Report(
|
|
diag::err_extract_api_ignores_file_not_found)
|
|
<< Err.Path;
|
|
});
|
|
}
|
|
|
|
auto WrappingConsumer =
|
|
std::make_unique<WrappingExtractAPIConsumer>(CI.getASTContext(), *API);
|
|
std::vector<std::unique_ptr<ASTConsumer>> Consumers;
|
|
Consumers.push_back(std::move(OtherConsumer));
|
|
Consumers.push_back(std::move(WrappingConsumer));
|
|
|
|
return std::make_unique<MultiplexConsumer>(std::move(Consumers));
|
|
}
|
|
|
|
void WrappingExtractAPIAction::EndSourceFileAction() {
|
|
// Invoke wrapped action's method.
|
|
WrapperFrontendAction::EndSourceFileAction();
|
|
|
|
if (CreatedASTConsumer) {
|
|
ImplEndSourceFileAction(getCompilerInstance());
|
|
}
|
|
}
|