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gerrit-public.fairphone.software / toolchain / llvm-project / c62b6c232f2b275276b1f77e44d57d5b463da653 / . / clang / Driver / clang.cpp
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//===--- 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 information about command line switches
// clang [options] - Read from stdin.
// clang [options] file - Read from "file".
//
//===----------------------------------------------------------------------===//
//
// TODO: Options to support:
//
// -ffatal-errors
// -ftabstop=width
//
//===----------------------------------------------------------------------===//
#include "clang.h"
#include "clang/AST/AST.h"
#include "clang/Parse/Parser.h"
#include "clang/Lex/HeaderSearch.h"
#include "clang/Basic/Diagnostic.h"
#include "clang/Basic/FileManager.h"
#include "clang/Basic/SourceBuffer.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/Support/CommandLine.h"
#include "llvm/System/MappedFile.h"
#include "llvm/System/Signals.h"
#include <iostream>
using namespace llvm;
using namespace clang;
static unsigned NumDiagnostics = 0;
static unsigned NumErrors = 0;
//===----------------------------------------------------------------------===//
// Global options.
//===----------------------------------------------------------------------===//
static cl::opt<bool>
Verbose("v", cl::desc("Enable verbose output"));
static cl::opt<bool>
Stats("stats", cl::desc("Print performance metrics and statistics"));
enum ProgActions {
ParseASTPrint, // Parse ASTs and print them.
ParseAST, // Parse ASTs.
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 cl::opt<ProgActions>
ProgAction(cl::desc("Choose output type:"), cl::ZeroOrMore,
cl::init(ParseNoop),
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(ParseAST, "parse-ast",
"Run parser and build ASTs"),
clEnumValN(ParseASTPrint, "parse-ast-print",
"Run parser, build ASTs, then print ASTs"),
clEnumValEnd));
//===----------------------------------------------------------------------===//
// 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 cl::opt<LangKind>
BaseLang("x", cl::desc("Base language to compile"),
cl::init(langkind_unspecified),
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 cl::opt<bool>
LangObjC("ObjC", cl::desc("Set base language to Objective-C"),
cl::Hidden);
static cl::opt<bool>
LangObjCXX("ObjC++", cl::desc("Set base language to Objective-C++"),
cl::Hidden);
/// InitializeBaseLanguage - Handle the -x foo options or infer a base language
/// from the input filename.
static void InitializeBaseLanguage(LangOptions &Options,
const std::string &Filename) {
if (BaseLang == langkind_unspecified) {
std::string::size_type DotPos = Filename.rfind('.');
if (LangObjC) {
BaseLang = langkind_objc;
} else if (LangObjCXX) {
BaseLang = langkind_objcxx;
} else if (DotPos == std::string::npos) {
BaseLang = langkind_c; // Default to C if no extension.
} else {
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")
BaseLang = langkind_c;
else if (Ext == "i")
BaseLang = langkind_c_cpp;
else if (Ext == "ii")
BaseLang = langkind_cxx_cpp;
else if (Ext == "m")
BaseLang = langkind_objc;
else if (Ext == "mi")
BaseLang = langkind_objc_cpp;
else if (Ext == "mm" || Ext == "M")
BaseLang = langkind_objcxx;
else if (Ext == "mii")
BaseLang = langkind_objcxx_cpp;
else if (Ext == "C" || Ext == "cc" || Ext == "cpp" || Ext == "CPP" ||
Ext == "c++" || Ext == "cp" || Ext == "cxx")
BaseLang = langkind_cxx;
else
BaseLang = langkind_c;
}
}
// FIXME: implement -fpreprocessed mode.
bool NoPreprocess = false;
switch (BaseLang) {
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
};
static cl::opt<LangStds>
LangStd("std", cl::desc("Language standard to compile for"),
cl::init(lang_unspecified),
cl::values(clEnumValN(lang_c89, "c89", "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++)"),
clEnumValEnd));
// FIXME: add:
// -ansi
// -trigraphs
// -fdollars-in-identifiers
static void InitializeLanguageStandard(LangOptions &Options) {
if (LangStd == lang_unspecified) {
// Based on the base language, pick one.
switch (BaseLang) {
default: assert(0 && "Unknown base language");
case langkind_c:
case langkind_c_cpp:
case langkind_objc:
case langkind_objc_cpp:
LangStd = lang_gnu89;
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_gnucxx98:
case lang_cxx98:
Options.CPlusPlus = 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.
}
//===----------------------------------------------------------------------===//
// Our DiagnosticClient implementation
//===----------------------------------------------------------------------===//
// FIXME: Werror should take a list of things, -Werror=foo,bar
static cl::opt<bool>
WarningsAsErrors("Werror", cl::desc("Treat all warnings as errors"));
static cl::opt<bool>
WarnOnExtensions("pedantic",
cl::desc("Issue a warning on uses of GCC extensions"));
static cl::opt<bool>
ErrorOnExtensions("pedantic-errors",
cl::desc("Issue an error on uses of GCC extensions"));
static cl::opt<bool>
WarnUnusedMacros("Wunused_macros",
cl::desc("Warn for unused macros in the main translation unit"));
/// 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);
}
static cl::opt<bool>
NoShowColumn("fno-show-column",
cl::desc("Do not include column number on diagnostics"));
static cl::opt<bool>
NoCaretDiagnostics("fno-caret-diagnostics",
cl::desc("Do not include source line and caret with"
" diagnostics"));
/// DiagnosticPrinterSTDERR - This is a concrete diagnostic client, which prints
/// the diagnostics to standard error.
class DiagnosticPrinterSTDERR : public DiagnosticClient {
SourceManager &SourceMgr;
SourceLocation LastWarningLoc;
public:
DiagnosticPrinterSTDERR(SourceManager &sourceMgr)
: SourceMgr(sourceMgr) {}
void PrintIncludeStack(SourceLocation Pos);
virtual void HandleDiagnostic(Diagnostic::Level DiagLevel,
SourceLocation Pos,
diag::kind ID, const std::string &Msg);
};
void DiagnosticPrinterSTDERR::
PrintIncludeStack(SourceLocation Pos) {
unsigned FileID = Pos.getFileID();
if (FileID == 0) return;
// Print out the other include frames first.
PrintIncludeStack(SourceMgr.getIncludeLoc(FileID));
unsigned LineNo = SourceMgr.getLineNumber(Pos);
const SourceBuffer *Buffer = SourceMgr.getBuffer(FileID);
std::cerr << "In file included from " << Buffer->getBufferIdentifier()
<< ":" << LineNo << ":\n";
}
void DiagnosticPrinterSTDERR::HandleDiagnostic(Diagnostic::Level Level,
SourceLocation Pos,
diag::kind ID,
const std::string &Extra) {
++NumDiagnostics;
unsigned LineNo = 0, FilePos = 0, FileID = 0, ColNo = 0;
unsigned LineStart = 0, LineEnd = 0;
const SourceBuffer *Buffer = 0;
if (Pos.isValid()) {
LineNo = SourceMgr.getLineNumber(Pos);
FileID = SourceMgr.getLogicalLoc(Pos).getFileID();
// First, if this diagnostic is not in the main file, print out the
// "included from" lines.
if (LastWarningLoc != SourceMgr.getIncludeLoc(FileID)) {
LastWarningLoc = SourceMgr.getIncludeLoc(FileID);
PrintIncludeStack(LastWarningLoc);
}
// Compute the column number. Rewind from the current position to the start
// of the line.
ColNo = SourceMgr.getColumnNumber(Pos);
FilePos = SourceMgr.getSourceFilePos(Pos);
LineStart = FilePos-ColNo+1; // Column # is 1-based
// Compute the line end. Scan forward from the error position to the end of
// the line.
Buffer = SourceMgr.getBuffer(FileID);
const char *Buf = Buffer->getBufferStart();
const char *BufEnd = Buffer->getBufferEnd();
LineEnd = FilePos;
while (Buf+LineEnd != BufEnd &&
Buf[LineEnd] != '\n' && Buf[LineEnd] != '\r')
++LineEnd;
std::cerr << Buffer->getBufferIdentifier()
<< ":" << LineNo << ":";
if (ColNo && !NoShowColumn)
std::cerr << ColNo << ":";
std::cerr << " ";
}
switch (Level) {
default: assert(0 && "Unknown diagnostic type!");
case Diagnostic::Note: std::cerr << "note: "; break;
case Diagnostic::Warning: std::cerr << "warning: "; break;
case Diagnostic::Error: ++NumErrors; std::cerr << "error: "; break;
case Diagnostic::Fatal: ++NumErrors; std::cerr << "fatal error: "; break;
case Diagnostic::Sorry: ++NumErrors; std::cerr << "sorry, unimplemented: ";
break;
}
std::string Msg = Diagnostic::getDescription(ID);
// Replace all instances of %s in Msg with 'Extra'.
if (Msg.size() > 1) {
for (unsigned i = 0; i < Msg.size()-1; ++i) {
if (Msg[i] == '%' && Msg[i+1] == 's') {
Msg = std::string(Msg.begin(), Msg.begin()+i) +
Extra +
std::string(Msg.begin()+i+2, Msg.end());
}
}
}
std::cerr << Msg << "\n";
if (!NoCaretDiagnostics && Pos.isValid()) {
// Print out a line of the source file.
const char *Buf = Buffer->getBufferStart();
std::cerr << std::string(Buf+LineStart, Buf+LineEnd) << "\n";
// If the source line contained any tab characters between the start of the
// line and the diagnostic, replace the space we inserted with a tab, so
// that the carat will be indented exactly like the source line.
std::string Indent(ColNo-1, ' ');
for (unsigned i = LineStart; i != FilePos; ++i)
if (Buf[i] == '\t')
Indent[i-LineStart] = '\t';
// Print out the caret itself.
std::cerr << Indent << "^\n";
}
}
//===----------------------------------------------------------------------===//
// Preprocessor Initialization
//===----------------------------------------------------------------------===//
// FIXME: Preprocessor builtins to support.
// -A... - Play with #assertions
// -undef - Undefine all predefined macros
static cl::list<std::string>
D_macros("D", cl::value_desc("macro"), cl::Prefix,
cl::desc("Predefine the specified macro"));
static cl::list<std::string>
U_macros("U", cl::value_desc("macro"), cl::Prefix,
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');
}
static void InitializePredefinedMacros(Preprocessor &PP,
std::vector<char> &Buf) {
// FIXME: Implement magic like cpp_init_builtins for things like __STDC__
// and __DATE__ etc.
#if 0
/* __STDC__ has the value 1 under normal circumstances.
However, if (a) we are in a system header, (b) the option
stdc_0_in_system_headers is true (set by target config), and
(c) we are not in strictly conforming mode, then it has the
value 0. (b) and (c) are already checked in cpp_init_builtins. */
//case BT_STDC:
if (cpp_in_system_header (pfile))
number = 0;
else
number = 1;
break;
#endif
// These should all be defined in the preprocessor according to the
// current language configuration.
DefineBuiltinMacro(Buf, "__STDC__=1");
//DefineBuiltinMacro(Buf, "__ASSEMBLER__=1");
if (PP.getLangOptions().C99)
DefineBuiltinMacro(Buf, "__STDC_VERSION__=199901L");
else
DefineBuiltinMacro(Buf, "__STDC_VERSION__=199409L");
DefineBuiltinMacro(Buf, "__STDC_HOSTED__=1");
if (PP.getLangOptions().ObjC1)
DefineBuiltinMacro(Buf, "__OBJC__=1");
if (PP.getLangOptions().ObjC2)
DefineBuiltinMacro(Buf, "__OBJC2__=1");
// Get the target #defines.
PP.getTargetInfo().getTargetDefines(Buf);
// Compiler set macros.
DefineBuiltinMacro(Buf, "__APPLE_CC__=5250");
DefineBuiltinMacro(Buf, "__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__=1030");
DefineBuiltinMacro(Buf, "__GNUC_MINOR__=0");
DefineBuiltinMacro(Buf, "__GNUC_PATCHLEVEL__=1");
DefineBuiltinMacro(Buf, "__GNUC__=4");
DefineBuiltinMacro(Buf, "__GXX_ABI_VERSION=1002");
DefineBuiltinMacro(Buf, "__VERSION__=\"4.0.1 (Apple Computer, Inc. "
"build 5250)\"");
// Build configuration options.
DefineBuiltinMacro(Buf, "__DYNAMIC__=1");
DefineBuiltinMacro(Buf, "__FINITE_MATH_ONLY__=0");
DefineBuiltinMacro(Buf, "__NO_INLINE__=1");
DefineBuiltinMacro(Buf, "__PIC__=1");
if (PP.getLangOptions().CPlusPlus) {
DefineBuiltinMacro(Buf, "__DEPRECATED=1");
DefineBuiltinMacro(Buf, "__EXCEPTIONS=1");
DefineBuiltinMacro(Buf, "__GNUG__=4");
DefineBuiltinMacro(Buf, "__GXX_WEAK__=1");
DefineBuiltinMacro(Buf, "__cplusplus=1");
DefineBuiltinMacro(Buf, "__private_extern__=extern");
}
// FIXME: Should emit a #line directive here.
// 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(Buf, D_macros[i].c_str());
for (unsigned i = 0, e = U_macros.size(); i != e; ++i)
DefineBuiltinMacro(Buf, U_macros[i].c_str(), "#undef ");
}
//===----------------------------------------------------------------------===//
// 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: -isysroot,-imultilib
//
// FIXME: -include,-imacros
static cl::opt<bool>
nostdinc("nostdinc", cl::desc("Disable standard #include directories"));
// Various command line options. These four add directories to each chain.
static cl::list<std::string>
F_dirs("F", cl::value_desc("directory"), cl::Prefix,
cl::desc("Add directory to framework include search path"));
static cl::list<std::string>
I_dirs("I", cl::value_desc("directory"), cl::Prefix,
cl::desc("Add directory to include search path"));
static cl::list<std::string>
idirafter_dirs("idirafter", cl::value_desc("directory"), cl::Prefix,
cl::desc("Add directory to AFTER include search path"));
static cl::list<std::string>
iquote_dirs("iquote", cl::value_desc("directory"), cl::Prefix,
cl::desc("Add directory to QUOTE include search path"));
static cl::list<std::string>
isystem_dirs("isystem", cl::value_desc("directory"), cl::Prefix,
cl::desc("Add directory to SYSTEM include search path"));
// These handle -iprefix/-iwithprefix/-iwithprefixbefore.
static cl::list<std::string>
iprefix_vals("iprefix", cl::value_desc("prefix"), cl::Prefix,
cl::desc("Set the -iwithprefix/-iwithprefixbefore prefix"));
static cl::list<std::string>
iwithprefix_vals("iwithprefix", cl::value_desc("dir"), cl::Prefix,
cl::desc("Set directory to SYSTEM include search path with prefix"));
static cl::list<std::string>
iwithprefixbefore_vals("iwithprefixbefore", cl::value_desc("dir"), cl::Prefix,
cl::desc("Set directory to include search path with prefix"));
// 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) {
const DirectoryEntry *DE = FM.getDirectory(Path);
if (DE == 0) {
if (Verbose)
std::cerr << "ignoring nonexistent directory \"" << Path << "\"\n";
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)
std::cerr << "ignoring duplicate directory \""
<< SearchList[i].getDir()->getName() << "\"\n";
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,
Diagnostic &Diags) {
// 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) {
if (I_dirs[i] == "-") {
// -I- is a deprecated GCC feature.
Diags.Report(SourceLocation(), diag::err_pp_I_dash_not_supported);
} else {
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) {
AddPath("/usr/local/include", System, false, false, false, FM);
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) {
std::cerr << "#include \"...\" search starts here:\n";
unsigned QuotedIdx = IncludeGroup[Quoted].size();
for (unsigned i = 0, e = SearchList.size(); i != e; ++i) {
if (i == QuotedIdx)
std::cerr << "#include <...> search starts here:\n";
std::cerr << " " << SearchList[i].getDir()->getName() << "\n";
}
}
}
// Read any files specified by -imacros or -include.
static void ReadPrologFiles(Preprocessor &PP, std::vector<char> &Buf) {
// FIXME: IMPLEMENT
}
//===----------------------------------------------------------------------===//
// Basic Parser driver
//===----------------------------------------------------------------------===//
static void ParseFile(Preprocessor &PP, MinimalAction *PA, unsigned MainFileID){
Parser P(PP, *PA);
PP.EnterSourceFile(MainFileID, 0, true);
// Parsing the specified input file.
P.ParseTranslationUnit();
delete PA;
}
//===----------------------------------------------------------------------===//
// ASTStreamer drivers
//===----------------------------------------------------------------------===//
static void BuildASTs(Preprocessor &PP, unsigned MainFileID) {
ASTStreamerTy *Streamer = ASTStreamer_Init(PP, MainFileID);
while (ASTStreamer_ReadTopLevelDecl(Streamer))
/* keep reading */;
ASTStreamer_Terminate(Streamer);
}
static void PrintASTs(Preprocessor &PP, unsigned MainFileID) {
ASTStreamerTy *Streamer = ASTStreamer_Init(PP, MainFileID);
while (Decl *D = ASTStreamer_ReadTopLevelDecl(Streamer)) {
std::cerr << "Read top-level decl: '";
if (const IdentifierInfo *II = D->getIdentifier())
std::cerr << II->getName() << "'\n";
else
std::cerr << "\n";
if (FunctionDecl *FD = D->isFunctionDecl()) {
if (FD->getBody()) {
FD->getBody()->dump();
std::cerr << "\n";
}
}
}
ASTStreamer_Terminate(Streamer);
}
//===----------------------------------------------------------------------===//
// Main driver
//===----------------------------------------------------------------------===//
static cl::opt<std::string>
InputFilename(cl::Positional, cl::desc("<input file>"), cl::init("-"));
int main(int argc, char **argv) {
cl::ParseCommandLineOptions(argc, argv, " llvm cfe\n");
sys::PrintStackTraceOnErrorSignal();
/// Create a SourceManager object. This tracks and owns all the file buffers
/// allocated to the program.
SourceManager SourceMgr;
// Print diagnostics to stderr.
DiagnosticPrinterSTDERR OurDiagnosticClient(SourceMgr);
// Configure our handling of diagnostics.
Diagnostic OurDiagnostics(OurDiagnosticClient);
InitializeDiagnostics(OurDiagnostics);
// Turn all options on.
LangOptions Options;
InitializeBaseLanguage(Options, InputFilename);
InitializeLanguageStandard(Options);
// 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 = CreateTargetInfo(OurDiagnostics);
if (Target == 0) {
std::cerr << "Sorry, don't know what target this is, please use -arch.\n";
return 1;
}
// Create a file manager object to provide access to and cache the filesystem.
FileManager FileMgr;
// Process the -I options and set them in the HeaderInfo.
HeaderSearch HeaderInfo(FileMgr);
InitializeIncludePaths(HeaderInfo, FileMgr, OurDiagnostics);
// Set up the preprocessor with these options.
Preprocessor PP(OurDiagnostics, Options, *Target, FileMgr, SourceMgr,
HeaderInfo);
// Install things like __POWERPC__, __GNUC__, etc into the macro table.
std::vector<char> PrologMacros;
InitializePredefinedMacros(PP, PrologMacros);
// Read any files specified by -imacros or -include.
ReadPrologFiles(PP, PrologMacros);
// Figure out where to get and map in the main file.
unsigned MainFileID = 0;
if (InputFilename != "-") {
const FileEntry *File = FileMgr.getFile(InputFilename);
if (File) MainFileID = SourceMgr.createFileID(File, SourceLocation());
if (MainFileID == 0) {
std::cerr << "Error reading '" << InputFilename << "'!\n";
return 1;
}
} else {
SourceBuffer *SB = SourceBuffer::getSTDIN();
if (SB) MainFileID = SourceMgr.createFileIDForMemBuffer(SB);
if (MainFileID == 0) {
std::cerr << "Error reading standard input! Empty?\n";
return 1;
}
}
// Now that we have emitted the predefined macros, #includes, etc into
// PrologMacros, preprocess it to populate the initial preprocessor state.
{
// Memory buffer must end with a null byte!
PrologMacros.push_back(0);
SourceBuffer *SB = SourceBuffer::getMemBuffer(&PrologMacros.front(),
&PrologMacros.back(),
"<predefines>");
assert(SB && "Cannot fail to create predefined source buffer");
unsigned FileID = SourceMgr.createFileIDForMemBuffer(SB);
assert(FileID && "Could not create FileID for predefines?");
// Start parsing the predefines.
PP.EnterSourceFile(FileID, 0);
// Lex the file, which will read all the macros.
LexerToken Tok;
PP.Lex(Tok);
assert(Tok.getKind() == tok::eof && "Didn't read entire file!");
// Once we've read this, we're done.
}
switch (ProgAction) {
case DumpTokens: { // Token dump mode.
LexerToken Tok;
// Start parsing the specified input file.
PP.EnterSourceFile(MainFileID, 0, true);
do {
PP.Lex(Tok);
PP.DumpToken(Tok, true);
std::cerr << "\n";
} while (Tok.getKind() != tok::eof);
break;
}
case RunPreprocessorOnly: { // Just lex as fast as we can, no output.
LexerToken Tok;
// Start parsing the specified input file.
PP.EnterSourceFile(MainFileID, 0, true);
do {
PP.Lex(Tok);
} while (Tok.getKind() != tok::eof);
break;
}
case PrintPreprocessedInput: // -E mode.
DoPrintPreprocessedInput(MainFileID, PP, Options);
break;
case ParseNoop: // -parse-noop
ParseFile(PP, new MinimalAction(), MainFileID);
break;
case ParseSyntaxOnly: // -fsyntax-only
std::cerr << "-fsyntax-only not implemented yet.\n";
break;
case ParsePrintCallbacks:
ParseFile(PP, CreatePrintParserActionsAction(), MainFileID);
break;
case ParseAST:
BuildASTs(PP, MainFileID);
break;
case ParseASTPrint:
PrintASTs(PP, MainFileID);
break;
}
if (NumDiagnostics)
std::cerr << NumDiagnostics << " diagnostics generated.\n";
if (Stats) {
// Printed from low-to-high level.
PP.getFileManager().PrintStats();
PP.getHeaderSearchInfo().PrintStats();
PP.getSourceManager().PrintStats();
PP.getIdentifierTable().PrintStats();
PP.PrintStats();
std::cerr << "\n";
}
return NumErrors != 0;
}