2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
//===- ClangFnMapGen.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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// Clang tool which creates a list of defined functions and the files in which
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// they are defined.
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//
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//===--------------------------------------------------------------------===//
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/Basic/SourceManager.h"
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#include "clang/CrossTU/CrossTranslationUnit.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/FrontendActions.h"
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#include "clang/Tooling/CommonOptionsParser.h"
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#include "clang/Tooling/Tooling.h"
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#include "llvm/Support/CommandLine.h"
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#include "llvm/Support/Signals.h"
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#include <sstream>
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#include <string>
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using namespace llvm;
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using namespace clang;
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using namespace clang::cross_tu;
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using namespace clang::tooling;
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static cl::OptionCategory ClangExtDefMapGenCategory("clang-extdefmapgen options");
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class MapExtDefNamesConsumer : public ASTConsumer {
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public:
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MapExtDefNamesConsumer(ASTContext &Context)
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: SM(Context.getSourceManager()) {}
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~MapExtDefNamesConsumer() {
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// Flush results to standard output.
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llvm::outs() << createCrossTUIndexString(Index);
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}
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void HandleTranslationUnit(ASTContext &Ctx) override {
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handleDecl(Ctx.getTranslationUnitDecl());
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}
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private:
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void handleDecl(const Decl *D);
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SourceManager &SM;
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llvm::StringMap<std::string> Index;
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std::string CurrentFileName;
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};
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void MapExtDefNamesConsumer::handleDecl(const Decl *D) {
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if (!D)
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return;
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if (const auto *FD = dyn_cast<FunctionDecl>(D)) {
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if (FD->isThisDeclarationADefinition()) {
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if (const Stmt *Body = FD->getBody()) {
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if (CurrentFileName.empty()) {
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CurrentFileName =
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SM.getFileEntryForID(SM.getMainFileID())->tryGetRealPathName();
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if (CurrentFileName.empty())
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CurrentFileName = "invalid_file";
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}
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switch (FD->getLinkageInternal()) {
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case ExternalLinkage:
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case VisibleNoLinkage:
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case UniqueExternalLinkage:
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if (SM.isInMainFile(Body->getBeginLoc())) {
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std::string LookupName =
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CrossTranslationUnitContext::getLookupName(FD);
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Index[LookupName] = CurrentFileName;
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}
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break;
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default:
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break;
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}
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}
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}
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}
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if (const auto *DC = dyn_cast<DeclContext>(D))
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for (const Decl *D : DC->decls())
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handleDecl(D);
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}
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class MapExtDefNamesAction : public ASTFrontendAction {
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protected:
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std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
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llvm::StringRef) {
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return llvm::make_unique<MapExtDefNamesConsumer>(CI.getASTContext());
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}
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};
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static cl::extrahelp CommonHelp(CommonOptionsParser::HelpMessage);
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int main(int argc, const char **argv) {
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// Print a stack trace if we signal out.
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sys::PrintStackTraceOnErrorSignal(argv[0], false);
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PrettyStackTraceProgram X(argc, argv);
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const char *Overview = "\nThis tool collects the USR name and location "
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"of external definitions in the source files "
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"(excluding headers).\n";
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CommonOptionsParser OptionsParser(argc, argv, ClangExtDefMapGenCategory,
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cl::ZeroOrMore, Overview);
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ClangTool Tool(OptionsParser.getCompilations(),
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OptionsParser.getSourcePathList());
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return Tool.run(newFrontendActionFactory<MapExtDefNamesAction>().get());
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}
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