| //===--- clang.cpp - C-Language Front-end ---------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file was developed by Chris Lattner and is distributed under |
| // the University of Illinois Open Source License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // This utility may be invoked in the following manner: |
| // clang --help - Output help info. |
| // clang [options] - Read from stdin. |
| // clang [options] file - Read from "file". |
| // clang [options] file1 file2 - Read these files. |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // TODO: Options to support: |
| // |
| // -ffatal-errors |
| // -ftabstop=width |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "clang.h" |
| #include "ASTConsumers.h" |
| #include "TextDiagnosticBuffer.h" |
| #include "TextDiagnosticPrinter.h" |
| #include "clang/Sema/ASTStreamer.h" |
| #include "clang/AST/ASTConsumer.h" |
| #include "clang/Parse/Parser.h" |
| #include "clang/Lex/HeaderSearch.h" |
| #include "clang/Basic/FileManager.h" |
| #include "clang/Basic/SourceManager.h" |
| #include "clang/Basic/TargetInfo.h" |
| #include "llvm/Support/CommandLine.h" |
| #include "llvm/Support/MemoryBuffer.h" |
| #include "llvm/System/Signals.h" |
| #include "llvm/Config/config.h" |
| #include <memory> |
| using namespace clang; |
| |
| //===----------------------------------------------------------------------===// |
| // Global options. |
| //===----------------------------------------------------------------------===// |
| |
| static llvm::cl::opt<bool> |
| Verbose("v", llvm::cl::desc("Enable verbose output")); |
| static llvm::cl::opt<bool> |
| Stats("stats", llvm::cl::desc("Print performance metrics and statistics")); |
| |
| enum ProgActions { |
| RewriteTest, // Rewriter testing stuff. |
| EmitLLVM, // Emit a .ll file. |
| ASTPrint, // Parse ASTs and print them. |
| ASTDump, // Parse ASTs and dump them. |
| ASTView, // Parse ASTs and view them in Graphviz. |
| ParseCFGDump, // Parse ASTS. Build CFGs. Print CFGs. |
| ParseCFGView, // Parse ASTS. Build CFGs. View CFGs. |
| AnalysisLiveVariables, // Print results of live-variable analysis. |
| WarnDeadStores, // Run DeadStores checker on parsed ASTs. |
| WarnDeadStoresCheck, // Check diagnostics for "DeadStores". |
| WarnUninitVals, // Run UnitializedVariables checker. |
| TestSerialization, // Run experimental serialization code. |
| ParsePrintCallbacks, // Parse and print each callback. |
| ParseSyntaxOnly, // Parse and perform semantic analysis. |
| ParseNoop, // Parse with noop callbacks. |
| RunPreprocessorOnly, // Just lex, no output. |
| PrintPreprocessedInput, // -E mode. |
| DumpTokens // Token dump mode. |
| }; |
| |
| static llvm::cl::opt<ProgActions> |
| ProgAction(llvm::cl::desc("Choose output type:"), llvm::cl::ZeroOrMore, |
| llvm::cl::init(ParseSyntaxOnly), |
| llvm::cl::values( |
| clEnumValN(RunPreprocessorOnly, "Eonly", |
| "Just run preprocessor, no output (for timings)"), |
| clEnumValN(PrintPreprocessedInput, "E", |
| "Run preprocessor, emit preprocessed file"), |
| clEnumValN(DumpTokens, "dumptokens", |
| "Run preprocessor, dump internal rep of tokens"), |
| clEnumValN(ParseNoop, "parse-noop", |
| "Run parser with noop callbacks (for timings)"), |
| clEnumValN(ParseSyntaxOnly, "fsyntax-only", |
| "Run parser and perform semantic analysis"), |
| clEnumValN(ParsePrintCallbacks, "parse-print-callbacks", |
| "Run parser and print each callback invoked"), |
| clEnumValN(ASTPrint, "ast-print", |
| "Build ASTs and then pretty-print them"), |
| clEnumValN(ASTDump, "ast-dump", |
| "Build ASTs and then debug dump them"), |
| clEnumValN(ASTView, "ast-view", |
| "Build ASTs and view them with GraphViz."), |
| clEnumValN(ParseCFGDump, "dump-cfg", |
| "Run parser, then build and print CFGs."), |
| clEnumValN(ParseCFGView, "view-cfg", |
| "Run parser, then build and view CFGs with Graphviz."), |
| clEnumValN(AnalysisLiveVariables, "dump-live-variables", |
| "Print results of live variable analysis."), |
| clEnumValN(WarnDeadStores, "warn-dead-stores", |
| "Flag warnings of stores to dead variables."), |
| clEnumValN(WarnUninitVals, "warn-uninit-values", |
| "Flag warnings of uses of unitialized variables."), |
| clEnumValN(TestSerialization, "test-pickling", |
| "Run prototype serializtion code."), |
| clEnumValN(EmitLLVM, "emit-llvm", |
| "Build ASTs then convert to LLVM, emit .ll file"), |
| clEnumValN(RewriteTest, "rewrite-test", |
| "Playground for the code rewriter"), |
| clEnumValEnd)); |
| |
| static llvm::cl::opt<bool> |
| VerifyDiagnostics("verify", |
| llvm::cl::desc("Verify emitted diagnostics and warnings.")); |
| |
| //===----------------------------------------------------------------------===// |
| // Language Options |
| //===----------------------------------------------------------------------===// |
| |
| enum LangKind { |
| langkind_unspecified, |
| langkind_c, |
| langkind_c_cpp, |
| langkind_cxx, |
| langkind_cxx_cpp, |
| langkind_objc, |
| langkind_objc_cpp, |
| langkind_objcxx, |
| langkind_objcxx_cpp |
| }; |
| |
| /* TODO: GCC also accepts: |
| c-header c++-header objective-c-header objective-c++-header |
| assembler assembler-with-cpp |
| ada, f77*, ratfor (!), f95, java, treelang |
| */ |
| static llvm::cl::opt<LangKind> |
| BaseLang("x", llvm::cl::desc("Base language to compile"), |
| llvm::cl::init(langkind_unspecified), |
| llvm::cl::values(clEnumValN(langkind_c, "c", "C"), |
| clEnumValN(langkind_cxx, "c++", "C++"), |
| clEnumValN(langkind_objc, "objective-c", "Objective C"), |
| clEnumValN(langkind_objcxx,"objective-c++","Objective C++"), |
| clEnumValN(langkind_c_cpp, "c-cpp-output", |
| "Preprocessed C"), |
| clEnumValN(langkind_cxx_cpp, "c++-cpp-output", |
| "Preprocessed C++"), |
| clEnumValN(langkind_objc_cpp, "objective-c-cpp-output", |
| "Preprocessed Objective C"), |
| clEnumValN(langkind_objcxx_cpp,"objective-c++-cpp-output", |
| "Preprocessed Objective C++"), |
| clEnumValEnd)); |
| |
| static llvm::cl::opt<bool> |
| LangObjC("ObjC", llvm::cl::desc("Set base language to Objective-C"), |
| llvm::cl::Hidden); |
| static llvm::cl::opt<bool> |
| LangObjCXX("ObjC++", llvm::cl::desc("Set base language to Objective-C++"), |
| llvm::cl::Hidden); |
| |
| /// InitializeBaseLanguage - Handle the -x foo options. |
| static void InitializeBaseLanguage() { |
| if (LangObjC) |
| BaseLang = langkind_objc; |
| else if (LangObjCXX) |
| BaseLang = langkind_objcxx; |
| } |
| |
| static LangKind GetLanguage(const std::string &Filename) { |
| if (BaseLang != langkind_unspecified) |
| return BaseLang; |
| |
| std::string::size_type DotPos = Filename.rfind('.'); |
| |
| if (DotPos == std::string::npos) { |
| BaseLang = langkind_c; // Default to C if no extension. |
| } |
| |
| std::string Ext = std::string(Filename.begin()+DotPos+1, Filename.end()); |
| // C header: .h |
| // C++ header: .hh or .H; |
| // assembler no preprocessing: .s |
| // assembler: .S |
| if (Ext == "c") |
| return langkind_c; |
| else if (Ext == "i") |
| return langkind_c_cpp; |
| else if (Ext == "ii") |
| return langkind_cxx_cpp; |
| else if (Ext == "m") |
| return langkind_objc; |
| else if (Ext == "mi") |
| return langkind_objc_cpp; |
| else if (Ext == "mm" || Ext == "M") |
| return langkind_objcxx; |
| else if (Ext == "mii") |
| return langkind_objcxx_cpp; |
| else if (Ext == "C" || Ext == "cc" || Ext == "cpp" || Ext == "CPP" || |
| Ext == "c++" || Ext == "cp" || Ext == "cxx") |
| return langkind_cxx; |
| else |
| return langkind_c; |
| } |
| |
| |
| static void InitializeLangOptions(LangOptions &Options, LangKind LK) { |
| // FIXME: implement -fpreprocessed mode. |
| bool NoPreprocess = false; |
| |
| switch (LK) { |
| default: assert(0 && "Unknown language kind!"); |
| case langkind_c_cpp: |
| NoPreprocess = true; |
| // FALLTHROUGH |
| case langkind_c: |
| break; |
| case langkind_cxx_cpp: |
| NoPreprocess = true; |
| // FALLTHROUGH |
| case langkind_cxx: |
| Options.CPlusPlus = 1; |
| break; |
| case langkind_objc_cpp: |
| NoPreprocess = true; |
| // FALLTHROUGH |
| case langkind_objc: |
| Options.ObjC1 = Options.ObjC2 = 1; |
| break; |
| case langkind_objcxx_cpp: |
| NoPreprocess = true; |
| // FALLTHROUGH |
| case langkind_objcxx: |
| Options.ObjC1 = Options.ObjC2 = 1; |
| Options.CPlusPlus = 1; |
| break; |
| } |
| } |
| |
| /// LangStds - Language standards we support. |
| enum LangStds { |
| lang_unspecified, |
| lang_c89, lang_c94, lang_c99, |
| lang_gnu89, lang_gnu99, |
| lang_cxx98, lang_gnucxx98, |
| lang_cxx0x, lang_gnucxx0x |
| }; |
| |
| static llvm::cl::opt<LangStds> |
| LangStd("std", llvm::cl::desc("Language standard to compile for"), |
| llvm::cl::init(lang_unspecified), |
| llvm::cl::values(clEnumValN(lang_c89, "c89", "ISO C 1990"), |
| clEnumValN(lang_c89, "c90", "ISO C 1990"), |
| clEnumValN(lang_c89, "iso9899:1990", "ISO C 1990"), |
| clEnumValN(lang_c94, "iso9899:199409", |
| "ISO C 1990 with amendment 1"), |
| clEnumValN(lang_c99, "c99", "ISO C 1999"), |
| // clEnumValN(lang_c99, "c9x", "ISO C 1999"), |
| clEnumValN(lang_c99, "iso9899:1999", "ISO C 1999"), |
| // clEnumValN(lang_c99, "iso9899:199x", "ISO C 1999"), |
| clEnumValN(lang_gnu89, "gnu89", |
| "ISO C 1990 with GNU extensions (default for C)"), |
| clEnumValN(lang_gnu99, "gnu99", |
| "ISO C 1999 with GNU extensions"), |
| clEnumValN(lang_gnu99, "gnu9x", |
| "ISO C 1999 with GNU extensions"), |
| clEnumValN(lang_cxx98, "c++98", |
| "ISO C++ 1998 with amendments"), |
| clEnumValN(lang_gnucxx98, "gnu++98", |
| "ISO C++ 1998 with amendments and GNU " |
| "extensions (default for C++)"), |
| clEnumValN(lang_cxx0x, "c++0x", |
| "Upcoming ISO C++ 200x with amendments"), |
| clEnumValN(lang_gnucxx0x, "gnu++0x", |
| "Upcoming ISO C++ 200x with amendments and GNU " |
| "extensions (default for C++)"), |
| clEnumValEnd)); |
| |
| static llvm::cl::opt<bool> |
| NoOperatorNames("fno-operator-names", |
| llvm::cl::desc("Do not treat C++ operator name keywords as " |
| "synonyms for operators")); |
| |
| static llvm::cl::opt<bool> |
| PascalStrings("fpascal-strings", |
| llvm::cl::desc("Recognize and construct Pascal-style " |
| "string literals")); |
| |
| static llvm::cl::opt<bool> |
| WritableStrings("fwritable-strings", |
| llvm::cl::desc("Store string literals as writable data.")); |
| |
| static llvm::cl::opt<bool> |
| LaxVectorConversions("flax-vector-conversions", |
| llvm::cl::desc("Allow implicit conversions between vectors" |
| " with a different number of elements or " |
| "different element types.")); |
| // FIXME: add: |
| // -ansi |
| // -trigraphs |
| // -fdollars-in-identifiers |
| // -fpascal-strings |
| static void InitializeLanguageStandard(LangOptions &Options, LangKind LK) { |
| if (LangStd == lang_unspecified) { |
| // Based on the base language, pick one. |
| switch (LK) { |
| default: assert(0 && "Unknown base language"); |
| case langkind_c: |
| case langkind_c_cpp: |
| case langkind_objc: |
| case langkind_objc_cpp: |
| LangStd = lang_gnu99; |
| break; |
| case langkind_cxx: |
| case langkind_cxx_cpp: |
| case langkind_objcxx: |
| case langkind_objcxx_cpp: |
| LangStd = lang_gnucxx98; |
| break; |
| } |
| } |
| |
| switch (LangStd) { |
| default: assert(0 && "Unknown language standard!"); |
| |
| // Fall through from newer standards to older ones. This isn't really right. |
| // FIXME: Enable specifically the right features based on the language stds. |
| case lang_gnucxx0x: |
| case lang_cxx0x: |
| Options.CPlusPlus0x = 1; |
| // FALL THROUGH |
| case lang_gnucxx98: |
| case lang_cxx98: |
| Options.CPlusPlus = 1; |
| Options.CXXOperatorNames = !NoOperatorNames; |
| Options.Boolean = 1; |
| // FALL THROUGH. |
| case lang_gnu99: |
| case lang_c99: |
| Options.Digraphs = 1; |
| Options.C99 = 1; |
| Options.HexFloats = 1; |
| // FALL THROUGH. |
| case lang_gnu89: |
| Options.BCPLComment = 1; // Only for C99/C++. |
| // FALL THROUGH. |
| case lang_c94: |
| case lang_c89: |
| break; |
| } |
| |
| Options.Trigraphs = 1; // -trigraphs or -ansi |
| Options.DollarIdents = 1; // FIXME: Really a target property. |
| Options.PascalStrings = PascalStrings; |
| Options.WritableStrings = WritableStrings; |
| Options.LaxVectorConversions = LaxVectorConversions; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Our DiagnosticClient implementation |
| //===----------------------------------------------------------------------===// |
| |
| // FIXME: Werror should take a list of things, -Werror=foo,bar |
| static llvm::cl::opt<bool> |
| WarningsAsErrors("Werror", llvm::cl::desc("Treat all warnings as errors")); |
| |
| static llvm::cl::opt<bool> |
| WarnOnExtensions("pedantic", llvm::cl::init(false), |
| llvm::cl::desc("Issue a warning on uses of GCC extensions")); |
| |
| static llvm::cl::opt<bool> |
| ErrorOnExtensions("pedantic-errors", |
| llvm::cl::desc("Issue an error on uses of GCC extensions")); |
| |
| static llvm::cl::opt<bool> |
| WarnUnusedMacros("Wunused_macros", |
| llvm::cl::desc("Warn for unused macros in the main translation unit")); |
| |
| static llvm::cl::opt<bool> |
| WarnFloatEqual("Wfloat-equal", |
| llvm::cl::desc("Warn about equality comparisons of floating point values.")); |
| |
| /// InitializeDiagnostics - Initialize the diagnostic object, based on the |
| /// current command line option settings. |
| static void InitializeDiagnostics(Diagnostic &Diags) { |
| Diags.setWarningsAsErrors(WarningsAsErrors); |
| Diags.setWarnOnExtensions(WarnOnExtensions); |
| Diags.setErrorOnExtensions(ErrorOnExtensions); |
| |
| // Silence the "macro is not used" warning unless requested. |
| if (!WarnUnusedMacros) |
| Diags.setDiagnosticMapping(diag::pp_macro_not_used, diag::MAP_IGNORE); |
| |
| // Silence "floating point comparison" warnings unless requested. |
| if (!WarnFloatEqual) |
| Diags.setDiagnosticMapping(diag::warn_floatingpoint_eq, diag::MAP_IGNORE); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Target Triple Processing. |
| //===----------------------------------------------------------------------===// |
| |
| static llvm::cl::opt<std::string> |
| TargetTriple("triple", |
| llvm::cl::desc("Specify target triple (e.g. i686-apple-darwin9).")); |
| |
| static llvm::cl::list<std::string> |
| Archs("arch", |
| llvm::cl::desc("Specify target architecture (e.g. i686).")); |
| |
| namespace { |
| class TripleProcessor { |
| llvm::StringMap<char> TriplesProcessed; |
| std::vector<std::string>& triples; |
| public: |
| TripleProcessor(std::vector<std::string>& t) : triples(t) {} |
| |
| void addTriple(const std::string& t) { |
| if (TriplesProcessed.find(t.c_str(),t.c_str()+t.size()) == |
| TriplesProcessed.end()) { |
| triples.push_back(t); |
| TriplesProcessed.GetOrCreateValue(t.c_str(),t.c_str()+t.size()); |
| } |
| } |
| }; |
| } |
| |
| static void CreateTargetTriples(std::vector<std::string>& triples) { |
| // Initialize base triple. If a -triple option has been specified, use |
| // that triple. Otherwise, default to the host triple. |
| std::string Triple = TargetTriple; |
| if (Triple.empty()) Triple = LLVM_HOSTTRIPLE; |
| |
| // Decompose the base triple into "arch" and suffix. |
| std::string::size_type firstDash = Triple.find("-"); |
| |
| if (firstDash == std::string::npos) { |
| fprintf(stderr, |
| "Malformed target triple: \"%s\" ('-' could not be found).\n", |
| Triple.c_str()); |
| exit(1); |
| } |
| |
| std::string suffix(Triple, firstDash+1); |
| |
| if (suffix.empty()) { |
| fprintf(stderr, "Malformed target triple: \"%s\" (no vendor or OS).\n", |
| Triple.c_str()); |
| exit(1); |
| } |
| |
| // Create triple cacher. |
| TripleProcessor tp(triples); |
| |
| // Add the primary triple to our set of triples if we are using the |
| // host-triple with no archs or using a specified target triple. |
| if (!TargetTriple.getValue().empty() || Archs.empty()) |
| tp.addTriple(Triple); |
| |
| for (unsigned i = 0, e = Archs.size(); i !=e; ++i) |
| tp.addTriple(Archs[i] + "-" + suffix); |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Preprocessor Initialization |
| //===----------------------------------------------------------------------===// |
| |
| // FIXME: Preprocessor builtins to support. |
| // -A... - Play with #assertions |
| // -undef - Undefine all predefined macros |
| |
| static llvm::cl::list<std::string> |
| D_macros("D", llvm::cl::value_desc("macro"), llvm::cl::Prefix, |
| llvm::cl::desc("Predefine the specified macro")); |
| static llvm::cl::list<std::string> |
| U_macros("U", llvm::cl::value_desc("macro"), llvm::cl::Prefix, |
| llvm::cl::desc("Undefine the specified macro")); |
| |
| // Append a #define line to Buf for Macro. Macro should be of the form XXX, |
| // in which case we emit "#define XXX 1" or "XXX=Y z W" in which case we emit |
| // "#define XXX Y z W". To get a #define with no value, use "XXX=". |
| static void DefineBuiltinMacro(std::vector<char> &Buf, const char *Macro, |
| const char *Command = "#define ") { |
| Buf.insert(Buf.end(), Command, Command+strlen(Command)); |
| if (const char *Equal = strchr(Macro, '=')) { |
| // Turn the = into ' '. |
| Buf.insert(Buf.end(), Macro, Equal); |
| Buf.push_back(' '); |
| Buf.insert(Buf.end(), Equal+1, Equal+strlen(Equal)); |
| } else { |
| // Push "macroname 1". |
| Buf.insert(Buf.end(), Macro, Macro+strlen(Macro)); |
| Buf.push_back(' '); |
| Buf.push_back('1'); |
| } |
| Buf.push_back('\n'); |
| } |
| |
| |
| /// InitializePreprocessor - Initialize the preprocessor getting it and the |
| /// environment ready to process a single file. This returns the file ID for the |
| /// input file. If a failure happens, it returns 0. |
| /// |
| static unsigned InitializePreprocessor(Preprocessor &PP, |
| const std::string &InFile, |
| SourceManager &SourceMgr, |
| HeaderSearch &HeaderInfo, |
| const LangOptions &LangInfo, |
| std::vector<char> &PredefineBuffer) { |
| |
| FileManager &FileMgr = HeaderInfo.getFileMgr(); |
| |
| // Figure out where to get and map in the main file. |
| unsigned MainFileID = 0; |
| if (InFile != "-") { |
| const FileEntry *File = FileMgr.getFile(InFile); |
| if (File) MainFileID = SourceMgr.createFileID(File, SourceLocation()); |
| if (MainFileID == 0) { |
| fprintf(stderr, "Error reading '%s'!\n",InFile.c_str()); |
| return 0; |
| } |
| } else { |
| llvm::MemoryBuffer *SB = llvm::MemoryBuffer::getSTDIN(); |
| if (SB) MainFileID = SourceMgr.createFileIDForMemBuffer(SB); |
| if (MainFileID == 0) { |
| fprintf(stderr, "Error reading standard input! Empty?\n"); |
| return 0; |
| } |
| } |
| |
| // Add macros from the command line. |
| // FIXME: Should traverse the #define/#undef lists in parallel. |
| for (unsigned i = 0, e = D_macros.size(); i != e; ++i) |
| DefineBuiltinMacro(PredefineBuffer, D_macros[i].c_str()); |
| for (unsigned i = 0, e = U_macros.size(); i != e; ++i) |
| DefineBuiltinMacro(PredefineBuffer, U_macros[i].c_str(), "#undef "); |
| |
| // FIXME: Read any files specified by -imacros or -include. |
| |
| // Null terminate PredefinedBuffer and add it. |
| PredefineBuffer.push_back(0); |
| PP.setPredefines(&PredefineBuffer[0]); |
| |
| // Once we've read this, we're done. |
| return MainFileID; |
| } |
| |
| |
| |
| //===----------------------------------------------------------------------===// |
| // Preprocessor include path information. |
| //===----------------------------------------------------------------------===// |
| |
| // This tool exports a large number of command line options to control how the |
| // preprocessor searches for header files. At root, however, the Preprocessor |
| // object takes a very simple interface: a list of directories to search for |
| // |
| // FIXME: -nostdinc,-nostdinc++ |
| // FIXME: -imultilib |
| // |
| // FIXME: -include,-imacros |
| |
| static llvm::cl::opt<bool> |
| nostdinc("nostdinc", llvm::cl::desc("Disable standard #include directories")); |
| |
| // Various command line options. These four add directories to each chain. |
| static llvm::cl::list<std::string> |
| F_dirs("F", llvm::cl::value_desc("directory"), llvm::cl::Prefix, |
| llvm::cl::desc("Add directory to framework include search path")); |
| static llvm::cl::list<std::string> |
| I_dirs("I", llvm::cl::value_desc("directory"), llvm::cl::Prefix, |
| llvm::cl::desc("Add directory to include search path")); |
| static llvm::cl::list<std::string> |
| idirafter_dirs("idirafter", llvm::cl::value_desc("directory"), llvm::cl::Prefix, |
| llvm::cl::desc("Add directory to AFTER include search path")); |
| static llvm::cl::list<std::string> |
| iquote_dirs("iquote", llvm::cl::value_desc("directory"), llvm::cl::Prefix, |
| llvm::cl::desc("Add directory to QUOTE include search path")); |
| static llvm::cl::list<std::string> |
| isystem_dirs("isystem", llvm::cl::value_desc("directory"), llvm::cl::Prefix, |
| llvm::cl::desc("Add directory to SYSTEM include search path")); |
| |
| // These handle -iprefix/-iwithprefix/-iwithprefixbefore. |
| static llvm::cl::list<std::string> |
| iprefix_vals("iprefix", llvm::cl::value_desc("prefix"), llvm::cl::Prefix, |
| llvm::cl::desc("Set the -iwithprefix/-iwithprefixbefore prefix")); |
| static llvm::cl::list<std::string> |
| iwithprefix_vals("iwithprefix", llvm::cl::value_desc("dir"), llvm::cl::Prefix, |
| llvm::cl::desc("Set directory to SYSTEM include search path with prefix")); |
| static llvm::cl::list<std::string> |
| iwithprefixbefore_vals("iwithprefixbefore", llvm::cl::value_desc("dir"), |
| llvm::cl::Prefix, |
| llvm::cl::desc("Set directory to include search path with prefix")); |
| |
| static llvm::cl::opt<std::string> |
| isysroot("isysroot", llvm::cl::value_desc("dir"), llvm::cl::init("/"), |
| llvm::cl::desc("Set the system root directory (usually /)")); |
| |
| // Finally, implement the code that groks the options above. |
| enum IncludeDirGroup { |
| Quoted = 0, |
| Angled, |
| System, |
| After |
| }; |
| |
| static std::vector<DirectoryLookup> IncludeGroup[4]; |
| |
| /// AddPath - Add the specified path to the specified group list. |
| /// |
| static void AddPath(const std::string &Path, IncludeDirGroup Group, |
| bool isCXXAware, bool isUserSupplied, |
| bool isFramework, FileManager &FM) { |
| assert(!Path.empty() && "can't handle empty path here"); |
| |
| const DirectoryEntry *DE; |
| if (Group == System) { |
| if (isysroot != "/") |
| DE = FM.getDirectory(isysroot + "/" + Path); |
| else if (Path[0] == '/') |
| DE = FM.getDirectory(Path); |
| else |
| DE = FM.getDirectory("/" + Path); |
| } else |
| DE = FM.getDirectory(Path); |
| |
| if (DE == 0) { |
| if (Verbose) |
| fprintf(stderr, "ignoring nonexistent directory \"%s\"\n", |
| Path.c_str()); |
| return; |
| } |
| |
| DirectoryLookup::DirType Type; |
| if (Group == Quoted || Group == Angled) |
| Type = DirectoryLookup::NormalHeaderDir; |
| else if (isCXXAware) |
| Type = DirectoryLookup::SystemHeaderDir; |
| else |
| Type = DirectoryLookup::ExternCSystemHeaderDir; |
| |
| IncludeGroup[Group].push_back(DirectoryLookup(DE, Type, isUserSupplied, |
| isFramework)); |
| } |
| |
| /// RemoveDuplicates - If there are duplicate directory entries in the specified |
| /// search list, remove the later (dead) ones. |
| static void RemoveDuplicates(std::vector<DirectoryLookup> &SearchList) { |
| std::set<const DirectoryEntry *> SeenDirs; |
| for (unsigned i = 0; i != SearchList.size(); ++i) { |
| // If this isn't the first time we've seen this dir, remove it. |
| if (!SeenDirs.insert(SearchList[i].getDir()).second) { |
| if (Verbose) |
| fprintf(stderr, "ignoring duplicate directory \"%s\"\n", |
| SearchList[i].getDir()->getName()); |
| SearchList.erase(SearchList.begin()+i); |
| --i; |
| } |
| } |
| } |
| |
| /// InitializeIncludePaths - Process the -I options and set them in the |
| /// HeaderSearch object. |
| static void InitializeIncludePaths(HeaderSearch &Headers, FileManager &FM, |
| const LangOptions &Lang) { |
| // Handle -F... options. |
| for (unsigned i = 0, e = F_dirs.size(); i != e; ++i) |
| AddPath(F_dirs[i], Angled, false, true, true, FM); |
| |
| // Handle -I... options. |
| for (unsigned i = 0, e = I_dirs.size(); i != e; ++i) |
| AddPath(I_dirs[i], Angled, false, true, false, FM); |
| |
| // Handle -idirafter... options. |
| for (unsigned i = 0, e = idirafter_dirs.size(); i != e; ++i) |
| AddPath(idirafter_dirs[i], After, false, true, false, FM); |
| |
| // Handle -iquote... options. |
| for (unsigned i = 0, e = iquote_dirs.size(); i != e; ++i) |
| AddPath(iquote_dirs[i], Quoted, false, true, false, FM); |
| |
| // Handle -isystem... options. |
| for (unsigned i = 0, e = isystem_dirs.size(); i != e; ++i) |
| AddPath(isystem_dirs[i], System, false, true, false, FM); |
| |
| // Walk the -iprefix/-iwithprefix/-iwithprefixbefore argument lists in |
| // parallel, processing the values in order of occurance to get the right |
| // prefixes. |
| { |
| std::string Prefix = ""; // FIXME: this isn't the correct default prefix. |
| unsigned iprefix_idx = 0; |
| unsigned iwithprefix_idx = 0; |
| unsigned iwithprefixbefore_idx = 0; |
| bool iprefix_done = iprefix_vals.empty(); |
| bool iwithprefix_done = iwithprefix_vals.empty(); |
| bool iwithprefixbefore_done = iwithprefixbefore_vals.empty(); |
| while (!iprefix_done || !iwithprefix_done || !iwithprefixbefore_done) { |
| if (!iprefix_done && |
| (iwithprefix_done || |
| iprefix_vals.getPosition(iprefix_idx) < |
| iwithprefix_vals.getPosition(iwithprefix_idx)) && |
| (iwithprefixbefore_done || |
| iprefix_vals.getPosition(iprefix_idx) < |
| iwithprefixbefore_vals.getPosition(iwithprefixbefore_idx))) { |
| Prefix = iprefix_vals[iprefix_idx]; |
| ++iprefix_idx; |
| iprefix_done = iprefix_idx == iprefix_vals.size(); |
| } else if (!iwithprefix_done && |
| (iwithprefixbefore_done || |
| iwithprefix_vals.getPosition(iwithprefix_idx) < |
| iwithprefixbefore_vals.getPosition(iwithprefixbefore_idx))) { |
| AddPath(Prefix+iwithprefix_vals[iwithprefix_idx], |
| System, false, false, false, FM); |
| ++iwithprefix_idx; |
| iwithprefix_done = iwithprefix_idx == iwithprefix_vals.size(); |
| } else { |
| AddPath(Prefix+iwithprefixbefore_vals[iwithprefixbefore_idx], |
| Angled, false, false, false, FM); |
| ++iwithprefixbefore_idx; |
| iwithprefixbefore_done = |
| iwithprefixbefore_idx == iwithprefixbefore_vals.size(); |
| } |
| } |
| } |
| |
| // FIXME: Add contents of the CPATH, C_INCLUDE_PATH, CPLUS_INCLUDE_PATH, |
| // OBJC_INCLUDE_PATH, OBJCPLUS_INCLUDE_PATH environment variables. |
| |
| // FIXME: temporary hack: hard-coded paths. |
| // FIXME: get these from the target? |
| if (!nostdinc) { |
| if (Lang.CPlusPlus) { |
| AddPath("/usr/include/c++/4.0.0", System, true, false, false, FM); |
| AddPath("/usr/include/c++/4.0.0/i686-apple-darwin8", System, true, false, |
| false, FM); |
| AddPath("/usr/include/c++/4.0.0/backward", System, true, false, false,FM); |
| } |
| |
| AddPath("/usr/local/include", System, false, false, false, FM); |
| // leopard |
| AddPath("/usr/lib/gcc/i686-apple-darwin9/4.0.1/include", System, |
| false, false, false, FM); |
| AddPath("/usr/lib/gcc/powerpc-apple-darwin9/4.0.1/include", |
| System, false, false, false, FM); |
| AddPath("/usr/lib/gcc/powerpc-apple-darwin9/" |
| "4.0.1/../../../../powerpc-apple-darwin0/include", |
| System, false, false, false, FM); |
| |
| // tiger |
| AddPath("/usr/lib/gcc/i686-apple-darwin8/4.0.1/include", System, |
| false, false, false, FM); |
| AddPath("/usr/lib/gcc/powerpc-apple-darwin8/4.0.1/include", |
| System, false, false, false, FM); |
| AddPath("/usr/lib/gcc/powerpc-apple-darwin8/" |
| "4.0.1/../../../../powerpc-apple-darwin8/include", |
| System, false, false, false, FM); |
| |
| AddPath("/usr/include", System, false, false, false, FM); |
| AddPath("/System/Library/Frameworks", System, true, false, true, FM); |
| AddPath("/Library/Frameworks", System, true, false, true, FM); |
| } |
| |
| // Now that we have collected all of the include paths, merge them all |
| // together and tell the preprocessor about them. |
| |
| // Concatenate ANGLE+SYSTEM+AFTER chains together into SearchList. |
| std::vector<DirectoryLookup> SearchList; |
| SearchList = IncludeGroup[Angled]; |
| SearchList.insert(SearchList.end(), IncludeGroup[System].begin(), |
| IncludeGroup[System].end()); |
| SearchList.insert(SearchList.end(), IncludeGroup[After].begin(), |
| IncludeGroup[After].end()); |
| RemoveDuplicates(SearchList); |
| RemoveDuplicates(IncludeGroup[Quoted]); |
| |
| // Prepend QUOTED list on the search list. |
| SearchList.insert(SearchList.begin(), IncludeGroup[Quoted].begin(), |
| IncludeGroup[Quoted].end()); |
| |
| |
| bool DontSearchCurDir = false; // TODO: set to true if -I- is set? |
| Headers.SetSearchPaths(SearchList, IncludeGroup[Quoted].size(), |
| DontSearchCurDir); |
| |
| // If verbose, print the list of directories that will be searched. |
| if (Verbose) { |
| fprintf(stderr, "#include \"...\" search starts here:\n"); |
| unsigned QuotedIdx = IncludeGroup[Quoted].size(); |
| for (unsigned i = 0, e = SearchList.size(); i != e; ++i) { |
| if (i == QuotedIdx) |
| fprintf(stderr, "#include <...> search starts here:\n"); |
| fprintf(stderr, " %s\n", SearchList[i].getDir()->getName()); |
| } |
| } |
| } |
| |
| |
| //===----------------------------------------------------------------------===// |
| // Basic Parser driver |
| //===----------------------------------------------------------------------===// |
| |
| static void ParseFile(Preprocessor &PP, MinimalAction *PA, unsigned MainFileID){ |
| Parser P(PP, *PA); |
| PP.EnterMainSourceFile(MainFileID); |
| |
| // Parsing the specified input file. |
| P.ParseTranslationUnit(); |
| delete PA; |
| } |
| |
| //===----------------------------------------------------------------------===// |
| // Main driver |
| //===----------------------------------------------------------------------===// |
| |
| /// CreateASTConsumer - Create the ASTConsumer for the corresponding program |
| /// action. These consumers can operate on both ASTs that are freshly |
| /// parsed from source files as well as those deserialized from Bitcode. |
| static ASTConsumer* CreateASTConsumer(Diagnostic& Diag, FileManager& FileMgr, |
| const LangOptions& LangOpts) { |
| switch (ProgAction) { |
| default: |
| return NULL; |
| |
| case ASTPrint: |
| return CreateASTPrinter(); |
| |
| case ASTDump: |
| return CreateASTDumper(); |
| |
| case ASTView: |
| return CreateASTViewer(); |
| |
| case ParseCFGDump: |
| case ParseCFGView: |
| return CreateCFGDumper(ProgAction == ParseCFGView); |
| |
| case AnalysisLiveVariables: |
| return CreateLiveVarAnalyzer(); |
| |
| case WarnDeadStores: |
| return CreateDeadStoreChecker(Diag); |
| |
| case WarnUninitVals: |
| return CreateUnitValsChecker(Diag); |
| |
| case TestSerialization: |
| return CreateSerializationTest(Diag, FileMgr, LangOpts); |
| |
| case EmitLLVM: |
| return CreateLLVMEmitter(Diag, LangOpts); |
| |
| case RewriteTest: |
| return CreateCodeRewriterTest(Diag); |
| } |
| } |
| |
| /// ProcessInputFile - Process a single input file with the specified state. |
| /// |
| static void ProcessInputFile(Preprocessor &PP, unsigned MainFileID, |
| const std::string &InFile, |
| SourceManager &SourceMgr, |
| TextDiagnostics &OurDiagnosticClient, |
| HeaderSearch &HeaderInfo, |
| const LangOptions &LangInfo) { |
| |
| ASTConsumer* Consumer = NULL; |
| bool ClearSourceMgr = false; |
| |
| switch (ProgAction) { |
| default: |
| Consumer = CreateASTConsumer(PP.getDiagnostics(), HeaderInfo.getFileMgr(), |
| PP.getLangOptions()); |
| |
| if (!Consumer) { |
| fprintf(stderr, "Unexpected program action!\n"); |
| return; |
| } |
| break; |
| |
| case DumpTokens: { // Token dump mode. |
| Token Tok; |
| // Start parsing the specified input file. |
| PP.EnterMainSourceFile(MainFileID); |
| do { |
| PP.Lex(Tok); |
| PP.DumpToken(Tok, true); |
| fprintf(stderr, "\n"); |
| } while (Tok.isNot(tok::eof)); |
| ClearSourceMgr = true; |
| break; |
| } |
| case RunPreprocessorOnly: { // Just lex as fast as we can, no output. |
| Token Tok; |
| // Start parsing the specified input file. |
| PP.EnterMainSourceFile(MainFileID); |
| do { |
| PP.Lex(Tok); |
| } while (Tok.isNot(tok::eof)); |
| ClearSourceMgr = true; |
| break; |
| } |
| |
| case PrintPreprocessedInput: // -E mode. |
| DoPrintPreprocessedInput(MainFileID, PP, LangInfo); |
| ClearSourceMgr = true; |
| break; |
| |
| case ParseNoop: // -parse-noop |
| ParseFile(PP, new MinimalAction(PP.getIdentifierTable()), MainFileID); |
| ClearSourceMgr = true; |
| break; |
| |
| case ParsePrintCallbacks: |
| ParseFile(PP, CreatePrintParserActionsAction(PP.getIdentifierTable()), |
| MainFileID); |
| ClearSourceMgr = true; |
| break; |
| |
| case ParseSyntaxOnly: // -fsyntax-only |
| Consumer = new ASTConsumer(); |
| break; |
| } |
| |
| if (Consumer) { |
| if (VerifyDiagnostics) |
| exit(CheckASTConsumer(PP, MainFileID, Consumer)); |
| |
| // This deletes Consumer. |
| ParseAST(PP, MainFileID, Consumer, Stats); |
| } |
| |
| if (Stats) { |
| fprintf(stderr, "\nSTATISTICS FOR '%s':\n", InFile.c_str()); |
| PP.PrintStats(); |
| PP.getIdentifierTable().PrintStats(); |
| HeaderInfo.PrintStats(); |
| if (ClearSourceMgr) |
| SourceMgr.PrintStats(); |
| fprintf(stderr, "\n"); |
| } |
| |
| // For a multi-file compilation, some things are ok with nuking the source |
| // manager tables, other require stable fileid/macroid's across multiple |
| // files. |
| if (ClearSourceMgr) { |
| SourceMgr.clearIDTables(); |
| } |
| } |
| |
| static llvm::cl::list<std::string> |
| InputFilenames(llvm::cl::Positional, llvm::cl::desc("<input files>")); |
| |
| |
| int main(int argc, char **argv) { |
| llvm::cl::ParseCommandLineOptions(argc, argv, " llvm cfe\n"); |
| llvm::sys::PrintStackTraceOnErrorSignal(); |
| |
| // If no input was specified, read from stdin. |
| if (InputFilenames.empty()) |
| InputFilenames.push_back("-"); |
| |
| // Create a file manager object to provide access to and cache the filesystem. |
| FileManager FileMgr; |
| |
| // Create the diagnostic client for reporting errors or for |
| // implementing -verify. |
| std::auto_ptr<TextDiagnostics> DiagClient; |
| if (!VerifyDiagnostics) { |
| // Print diagnostics to stderr by default. |
| DiagClient.reset(new TextDiagnosticPrinter()); |
| } else { |
| // When checking diagnostics, just buffer them up. |
| DiagClient.reset(new TextDiagnosticBuffer()); |
| |
| if (InputFilenames.size() != 1) { |
| fprintf(stderr, |
| "-verify only works on single input files for now.\n"); |
| return 1; |
| } |
| } |
| |
| // Configure our handling of diagnostics. |
| Diagnostic Diags(*DiagClient); |
| InitializeDiagnostics(Diags); |
| |
| // -I- is a deprecated GCC feature, scan for it and reject it. |
| for (unsigned i = 0, e = I_dirs.size(); i != e; ++i) { |
| if (I_dirs[i] == "-") { |
| Diags.Report(diag::err_pp_I_dash_not_supported); |
| I_dirs.erase(I_dirs.begin()+i); |
| --i; |
| } |
| } |
| |
| for (unsigned i = 0, e = InputFilenames.size(); i != e; ++i) { |
| const std::string &InFile = InputFilenames[i]; |
| |
| /// Create a SourceManager object. This tracks and owns all the file |
| /// buffers allocated to a translation unit. |
| SourceManager SourceMgr; |
| |
| // Initialize language options, inferring file types from input filenames. |
| LangOptions LangInfo; |
| InitializeBaseLanguage(); |
| LangKind LK = GetLanguage(InFile); |
| InitializeLangOptions(LangInfo, LK); |
| InitializeLanguageStandard(LangInfo, LK); |
| |
| // Process the -I options and set them in the HeaderInfo. |
| HeaderSearch HeaderInfo(FileMgr); |
| DiagClient->setHeaderSearch(HeaderInfo); |
| InitializeIncludePaths(HeaderInfo, FileMgr, LangInfo); |
| |
| // Get information about the targets being compiled for. Note that this |
| // pointer and the TargetInfoImpl objects are never deleted by this toy |
| // driver. |
| TargetInfo *Target; |
| |
| // Create triples, and create the TargetInfo. |
| std::vector<std::string> triples; |
| CreateTargetTriples(triples); |
| Target = CreateTargetInfo(SourceMgr,triples,&Diags); |
| |
| if (Target == 0) { |
| fprintf(stderr, "Sorry, I don't know what target this is: %s\n", |
| triples[0].c_str()); |
| fprintf(stderr, "Please use -triple or -arch.\n"); |
| exit(1); |
| } |
| |
| // Set up the preprocessor with these options. |
| Preprocessor PP(Diags, LangInfo, *Target, SourceMgr, HeaderInfo); |
| |
| std::vector<char> PredefineBuffer; |
| unsigned MainFileID = InitializePreprocessor(PP, InFile, SourceMgr, |
| HeaderInfo, LangInfo, |
| PredefineBuffer); |
| |
| if (!MainFileID) continue; |
| |
| ProcessInputFile(PP, MainFileID, InFile, SourceMgr, |
| *DiagClient, HeaderInfo, LangInfo); |
| |
| HeaderInfo.ClearFileInfo(); |
| |
| if (Stats) |
| SourceMgr.PrintStats(); |
| } |
| |
| unsigned NumDiagnostics = Diags.getNumDiagnostics(); |
| |
| if (NumDiagnostics) |
| fprintf(stderr, "%d diagnostic%s generated.\n", NumDiagnostics, |
| (NumDiagnostics == 1 ? "" : "s")); |
| |
| if (Stats) { |
| FileMgr.PrintStats(); |
| fprintf(stderr, "\n"); |
| } |
| |
| return Diags.getNumErrors() != 0; |
| } |