378 lines
12 KiB
C++
378 lines
12 KiB
C++
//===-- arcmt-test.cpp - ARC Migration Tool testbed -----------------------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/ARCMigrate/ARCMT.h"
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#include "clang/Frontend/ASTUnit.h"
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#include "clang/Frontend/TextDiagnosticPrinter.h"
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#include "clang/Frontend/Utils.h"
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#include "clang/Frontend/VerifyDiagnosticConsumer.h"
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#include "clang/Lex/Preprocessor.h"
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#include "llvm/Support/FileSystem.h"
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#include "llvm/Support/MemoryBuffer.h"
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#include "llvm/Support/Signals.h"
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#include "llvm/Support/system_error.h"
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using namespace clang;
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using namespace arcmt;
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static llvm::cl::opt<bool>
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CheckOnly("check-only",
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llvm::cl::desc("Just check for issues that need to be handled manually"));
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//static llvm::cl::opt<bool>
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//TestResultForARC("test-result",
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//llvm::cl::desc("Test the result of transformations by parsing it in ARC mode"));
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static llvm::cl::opt<bool>
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OutputTransformations("output-transformations",
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llvm::cl::desc("Print the source transformations"));
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static llvm::cl::opt<bool>
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VerifyDiags("verify",llvm::cl::desc("Verify emitted diagnostics and warnings"));
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static llvm::cl::opt<bool>
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VerboseOpt("v", llvm::cl::desc("Enable verbose output"));
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static llvm::cl::opt<bool>
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VerifyTransformedFiles("verify-transformed-files",
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llvm::cl::desc("Read pairs of file mappings (typically the output of "
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"c-arcmt-test) and compare their contents with the filenames "
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"provided in command-line"));
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static llvm::cl::opt<std::string>
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RemappingsFile("remappings-file",
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llvm::cl::desc("Pairs of file mappings (typically the output of "
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"c-arcmt-test)"));
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static llvm::cl::list<std::string>
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ResultFiles(llvm::cl::Positional, llvm::cl::desc("<filename>..."));
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static llvm::cl::extrahelp extraHelp(
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"\nusage with compiler args: arcmt-test [options] --args [compiler flags]\n");
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// This function isn't referenced outside its translation unit, but it
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// can't use the "static" keyword because its address is used for
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// GetMainExecutable (since some platforms don't support taking the
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// address of main, and some platforms can't implement GetMainExecutable
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// without being given the address of a function in the main executable).
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std::string GetExecutablePath(const char *Argv0) {
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// This just needs to be some symbol in the binary; C++ doesn't
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// allow taking the address of ::main however.
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void *MainAddr = (void*) (intptr_t) GetExecutablePath;
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return llvm::sys::fs::getMainExecutable(Argv0, MainAddr);
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}
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static void printSourceLocation(SourceLocation loc, ASTContext &Ctx,
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raw_ostream &OS);
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static void printSourceRange(CharSourceRange range, ASTContext &Ctx,
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raw_ostream &OS);
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namespace {
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class PrintTransforms : public MigrationProcess::RewriteListener {
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ASTContext *Ctx;
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raw_ostream &OS;
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public:
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PrintTransforms(raw_ostream &OS)
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: Ctx(0), OS(OS) { }
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virtual void start(ASTContext &ctx) { Ctx = &ctx; }
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virtual void finish() { Ctx = 0; }
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virtual void insert(SourceLocation loc, StringRef text) {
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assert(Ctx);
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OS << "Insert: ";
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printSourceLocation(loc, *Ctx, OS);
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OS << " \"" << text << "\"\n";
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}
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virtual void remove(CharSourceRange range) {
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assert(Ctx);
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OS << "Remove: ";
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printSourceRange(range, *Ctx, OS);
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OS << '\n';
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}
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};
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} // anonymous namespace
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static bool checkForMigration(StringRef resourcesPath,
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ArrayRef<const char *> Args) {
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IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
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DiagnosticConsumer *DiagClient =
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new TextDiagnosticPrinter(llvm::errs(), &*DiagOpts);
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IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
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IntrusiveRefCntPtr<DiagnosticsEngine> Diags(
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new DiagnosticsEngine(DiagID, &*DiagOpts, DiagClient));
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// Chain in -verify checker, if requested.
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VerifyDiagnosticConsumer *verifyDiag = 0;
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if (VerifyDiags) {
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verifyDiag = new VerifyDiagnosticConsumer(*Diags);
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Diags->setClient(verifyDiag);
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}
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CompilerInvocation CI;
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if (!CompilerInvocation::CreateFromArgs(CI, Args.begin(), Args.end(), *Diags))
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return true;
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if (CI.getFrontendOpts().Inputs.empty()) {
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llvm::errs() << "error: no input files\n";
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return true;
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}
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if (!CI.getLangOpts()->ObjC1)
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return false;
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arcmt::checkForManualIssues(CI, CI.getFrontendOpts().Inputs[0],
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Diags->getClient());
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return Diags->getClient()->getNumErrors() > 0;
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}
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static void printResult(FileRemapper &remapper, raw_ostream &OS) {
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PreprocessorOptions PPOpts;
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remapper.applyMappings(PPOpts);
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// The changed files will be in memory buffers, print them.
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for (unsigned i = 0, e = PPOpts.RemappedFileBuffers.size(); i != e; ++i) {
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const llvm::MemoryBuffer *mem = PPOpts.RemappedFileBuffers[i].second;
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OS << mem->getBuffer();
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}
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}
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static bool performTransformations(StringRef resourcesPath,
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ArrayRef<const char *> Args) {
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// Check first.
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if (checkForMigration(resourcesPath, Args))
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return true;
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IntrusiveRefCntPtr<DiagnosticOptions> DiagOpts = new DiagnosticOptions();
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DiagnosticConsumer *DiagClient =
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new TextDiagnosticPrinter(llvm::errs(), &*DiagOpts);
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IntrusiveRefCntPtr<DiagnosticIDs> DiagID(new DiagnosticIDs());
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IntrusiveRefCntPtr<DiagnosticsEngine> TopDiags(
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new DiagnosticsEngine(DiagID, &*DiagOpts, &*DiagClient));
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CompilerInvocation origCI;
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if (!CompilerInvocation::CreateFromArgs(origCI, Args.begin(), Args.end(),
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*TopDiags))
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return true;
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if (origCI.getFrontendOpts().Inputs.empty()) {
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llvm::errs() << "error: no input files\n";
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return true;
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}
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if (!origCI.getLangOpts()->ObjC1)
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return false;
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MigrationProcess migration(origCI, DiagClient);
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std::vector<TransformFn>
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transforms = arcmt::getAllTransformations(origCI.getLangOpts()->getGC(),
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origCI.getMigratorOpts().NoFinalizeRemoval);
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assert(!transforms.empty());
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OwningPtr<PrintTransforms> transformPrinter;
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if (OutputTransformations)
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transformPrinter.reset(new PrintTransforms(llvm::outs()));
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for (unsigned i=0, e = transforms.size(); i != e; ++i) {
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bool err = migration.applyTransform(transforms[i], transformPrinter.get());
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if (err) return true;
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if (VerboseOpt) {
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if (i == e-1)
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llvm::errs() << "\n##### FINAL RESULT #####\n";
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else
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llvm::errs() << "\n##### OUTPUT AFTER "<< i+1 <<". TRANSFORMATION #####\n";
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printResult(migration.getRemapper(), llvm::errs());
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llvm::errs() << "\n##########################\n\n";
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}
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}
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if (!OutputTransformations)
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printResult(migration.getRemapper(), llvm::outs());
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// FIXME: TestResultForARC
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return false;
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}
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static bool filesCompareEqual(StringRef fname1, StringRef fname2) {
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using namespace llvm;
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OwningPtr<MemoryBuffer> file1;
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MemoryBuffer::getFile(fname1, file1);
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if (!file1)
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return false;
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OwningPtr<MemoryBuffer> file2;
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MemoryBuffer::getFile(fname2, file2);
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if (!file2)
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return false;
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return file1->getBuffer() == file2->getBuffer();
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}
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static bool verifyTransformedFiles(ArrayRef<std::string> resultFiles) {
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using namespace llvm;
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assert(!resultFiles.empty());
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std::map<StringRef, StringRef> resultMap;
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for (ArrayRef<std::string>::iterator
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I = resultFiles.begin(), E = resultFiles.end(); I != E; ++I) {
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StringRef fname(*I);
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if (!fname.endswith(".result")) {
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errs() << "error: filename '" << fname
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<< "' does not have '.result' extension\n";
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return true;
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}
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resultMap[sys::path::stem(fname)] = fname;
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}
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OwningPtr<MemoryBuffer> inputBuf;
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if (RemappingsFile.empty())
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MemoryBuffer::getSTDIN(inputBuf);
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else
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MemoryBuffer::getFile(RemappingsFile, inputBuf);
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if (!inputBuf) {
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errs() << "error: could not read remappings input\n";
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return true;
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}
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SmallVector<StringRef, 8> strs;
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inputBuf->getBuffer().split(strs, "\n", /*MaxSplit=*/-1, /*KeepEmpty=*/false);
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if (strs.empty()) {
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errs() << "error: no files to verify from stdin\n";
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return true;
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}
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if (strs.size() % 2 != 0) {
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errs() << "error: files to verify are not original/result pairs\n";
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return true;
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}
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for (unsigned i = 0, e = strs.size(); i != e; i += 2) {
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StringRef inputOrigFname = strs[i];
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StringRef inputResultFname = strs[i+1];
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std::map<StringRef, StringRef>::iterator It;
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It = resultMap.find(sys::path::filename(inputOrigFname));
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if (It == resultMap.end()) {
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errs() << "error: '" << inputOrigFname << "' is not in the list of "
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<< "transformed files to verify\n";
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return true;
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}
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bool exists = false;
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sys::fs::exists(It->second, exists);
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if (!exists) {
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errs() << "error: '" << It->second << "' does not exist\n";
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return true;
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}
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sys::fs::exists(inputResultFname, exists);
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if (!exists) {
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errs() << "error: '" << inputResultFname << "' does not exist\n";
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return true;
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}
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if (!filesCompareEqual(It->second, inputResultFname)) {
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errs() << "error: '" << It->second << "' is different than "
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<< "'" << inputResultFname << "'\n";
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return true;
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}
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resultMap.erase(It);
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}
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if (!resultMap.empty()) {
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for (std::map<StringRef, StringRef>::iterator
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I = resultMap.begin(), E = resultMap.end(); I != E; ++I)
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errs() << "error: '" << I->second << "' was not verified!\n";
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return true;
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}
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return false;
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}
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//===----------------------------------------------------------------------===//
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// Misc. functions.
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//===----------------------------------------------------------------------===//
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static void printSourceLocation(SourceLocation loc, ASTContext &Ctx,
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raw_ostream &OS) {
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SourceManager &SM = Ctx.getSourceManager();
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PresumedLoc PL = SM.getPresumedLoc(loc);
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OS << llvm::sys::path::filename(PL.getFilename());
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OS << ":" << PL.getLine() << ":"
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<< PL.getColumn();
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}
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static void printSourceRange(CharSourceRange range, ASTContext &Ctx,
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raw_ostream &OS) {
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SourceManager &SM = Ctx.getSourceManager();
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const LangOptions &langOpts = Ctx.getLangOpts();
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PresumedLoc PL = SM.getPresumedLoc(range.getBegin());
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OS << llvm::sys::path::filename(PL.getFilename());
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OS << " [" << PL.getLine() << ":"
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<< PL.getColumn();
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OS << " - ";
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SourceLocation end = range.getEnd();
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PL = SM.getPresumedLoc(end);
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unsigned endCol = PL.getColumn() - 1;
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if (!range.isTokenRange())
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endCol += Lexer::MeasureTokenLength(end, SM, langOpts);
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OS << PL.getLine() << ":" << endCol << "]";
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}
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//===----------------------------------------------------------------------===//
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// Command line processing.
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//===----------------------------------------------------------------------===//
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int main(int argc, const char **argv) {
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void *MainAddr = (void*) (intptr_t) GetExecutablePath;
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llvm::sys::PrintStackTraceOnErrorSignal();
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std::string
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resourcesPath = CompilerInvocation::GetResourcesPath(argv[0], MainAddr);
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int optargc = 0;
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for (; optargc != argc; ++optargc) {
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if (StringRef(argv[optargc]) == "--args")
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break;
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}
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llvm::cl::ParseCommandLineOptions(optargc, argv, "arcmt-test");
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if (VerifyTransformedFiles) {
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if (ResultFiles.empty()) {
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llvm::cl::PrintHelpMessage();
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return 1;
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}
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return verifyTransformedFiles(ResultFiles);
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}
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if (optargc == argc) {
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llvm::cl::PrintHelpMessage();
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return 1;
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}
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ArrayRef<const char*> Args(argv+optargc+1, argc-optargc-1);
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if (CheckOnly)
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return checkForMigration(resourcesPath, Args);
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return performTransformations(resourcesPath, Args);
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}
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