summaryrefslogtreecommitdiffstats
path: root/contrib/llvm/tools/clang/lib/Lex/PPLexerChange.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'contrib/llvm/tools/clang/lib/Lex/PPLexerChange.cpp')
-rw-r--r--contrib/llvm/tools/clang/lib/Lex/PPLexerChange.cpp181
1 files changed, 114 insertions, 67 deletions
diff --git a/contrib/llvm/tools/clang/lib/Lex/PPLexerChange.cpp b/contrib/llvm/tools/clang/lib/Lex/PPLexerChange.cpp
index 4db17c3..36d7028 100644
--- a/contrib/llvm/tools/clang/lib/Lex/PPLexerChange.cpp
+++ b/contrib/llvm/tools/clang/lib/Lex/PPLexerChange.cpp
@@ -117,7 +117,7 @@ void Preprocessor::EnterSourceFileWithLexer(Lexer *TheLexer,
CurLexer.reset(TheLexer);
CurPPLexer = TheLexer;
CurDirLookup = CurDir;
- CurSubmodule = nullptr;
+ CurLexerSubmodule = nullptr;
if (CurLexerKind != CLK_LexAfterModuleImport)
CurLexerKind = CLK_Lexer;
@@ -142,7 +142,7 @@ void Preprocessor::EnterSourceFileWithPTH(PTHLexer *PL,
CurDirLookup = CurDir;
CurPTHLexer.reset(PL);
CurPPLexer = CurPTHLexer.get();
- CurSubmodule = nullptr;
+ CurLexerSubmodule = nullptr;
if (CurLexerKind != CLK_LexAfterModuleImport)
CurLexerKind = CLK_PTHLexer;
@@ -287,6 +287,48 @@ const char *Preprocessor::getCurLexerEndPos() {
return EndPos;
}
+static void collectAllSubModulesWithUmbrellaHeader(
+ const Module &Mod, SmallVectorImpl<const Module *> &SubMods) {
+ if (Mod.getUmbrellaHeader())
+ SubMods.push_back(&Mod);
+ for (auto *M : Mod.submodules())
+ collectAllSubModulesWithUmbrellaHeader(*M, SubMods);
+}
+
+void Preprocessor::diagnoseMissingHeaderInUmbrellaDir(const Module &Mod) {
+ assert(Mod.getUmbrellaHeader() && "Module must use umbrella header");
+ SourceLocation StartLoc =
+ SourceMgr.getLocForStartOfFile(SourceMgr.getMainFileID());
+ if (getDiagnostics().isIgnored(diag::warn_uncovered_module_header, StartLoc))
+ return;
+
+ ModuleMap &ModMap = getHeaderSearchInfo().getModuleMap();
+ const DirectoryEntry *Dir = Mod.getUmbrellaDir().Entry;
+ vfs::FileSystem &FS = *FileMgr.getVirtualFileSystem();
+ std::error_code EC;
+ for (vfs::recursive_directory_iterator Entry(FS, Dir->getName(), EC), End;
+ Entry != End && !EC; Entry.increment(EC)) {
+ using llvm::StringSwitch;
+
+ // Check whether this entry has an extension typically associated with
+ // headers.
+ if (!StringSwitch<bool>(llvm::sys::path::extension(Entry->getName()))
+ .Cases(".h", ".H", ".hh", ".hpp", true)
+ .Default(false))
+ continue;
+
+ if (const FileEntry *Header = getFileManager().getFile(Entry->getName()))
+ if (!getSourceManager().hasFileInfo(Header)) {
+ if (!ModMap.isHeaderInUnavailableModule(Header)) {
+ // Find the relative path that would access this header.
+ SmallString<128> RelativePath;
+ computeRelativePath(FileMgr, Dir, Header, RelativePath);
+ Diag(StartLoc, diag::warn_uncovered_module_header)
+ << Mod.getFullModuleName() << RelativePath;
+ }
+ }
+ }
+}
/// HandleEndOfFile - This callback is invoked when the lexer hits the end of
/// the current file. This either returns the EOF token or pops a level off
@@ -295,6 +337,26 @@ bool Preprocessor::HandleEndOfFile(Token &Result, bool isEndOfMacro) {
assert(!CurTokenLexer &&
"Ending a file when currently in a macro!");
+ // If we have an unclosed module region from a pragma at the end of a
+ // module, complain and close it now.
+ // FIXME: This is not correct if we are building a module from PTH.
+ const bool LeavingSubmodule = CurLexer && CurLexerSubmodule;
+ if ((LeavingSubmodule || IncludeMacroStack.empty()) &&
+ !BuildingSubmoduleStack.empty() &&
+ BuildingSubmoduleStack.back().IsPragma) {
+ Diag(BuildingSubmoduleStack.back().ImportLoc,
+ diag::err_pp_module_begin_without_module_end);
+ Module *M = LeaveSubmodule(/*ForPragma*/true);
+
+ Result.startToken();
+ const char *EndPos = getCurLexerEndPos();
+ CurLexer->BufferPtr = EndPos;
+ CurLexer->FormTokenWithChars(Result, EndPos, tok::annot_module_end);
+ Result.setAnnotationEndLoc(Result.getLocation());
+ Result.setAnnotationValue(M);
+ return true;
+ }
+
// See if this file had a controlling macro.
if (CurPPLexer) { // Not ending a macro, ignore it.
if (const IdentifierInfo *ControllingMacro =
@@ -303,9 +365,8 @@ bool Preprocessor::HandleEndOfFile(Token &Result, bool isEndOfMacro) {
if (const FileEntry *FE = CurPPLexer->getFileEntry()) {
HeaderInfo.SetFileControllingMacro(FE, ControllingMacro);
if (MacroInfo *MI =
- getMacroInfo(const_cast<IdentifierInfo*>(ControllingMacro))) {
- MI->UsedForHeaderGuard = true;
- }
+ getMacroInfo(const_cast<IdentifierInfo*>(ControllingMacro)))
+ MI->setUsedForHeaderGuard(true);
if (const IdentifierInfo *DefinedMacro =
CurPPLexer->MIOpt.GetDefinedMacro()) {
if (!isMacroDefined(ControllingMacro) &&
@@ -397,22 +458,27 @@ bool Preprocessor::HandleEndOfFile(Token &Result, bool isEndOfMacro) {
SourceMgr.setNumCreatedFIDsForFileID(CurPPLexer->getFileID(), NumFIDs);
}
+ bool ExitedFromPredefinesFile = false;
FileID ExitedFID;
- if (Callbacks && !isEndOfMacro && CurPPLexer)
+ if (!isEndOfMacro && CurPPLexer) {
ExitedFID = CurPPLexer->getFileID();
- bool LeavingSubmodule = CurSubmodule && CurLexer;
+ assert(PredefinesFileID.isValid() &&
+ "HandleEndOfFile is called before PredefinesFileId is set");
+ ExitedFromPredefinesFile = (PredefinesFileID == ExitedFID);
+ }
+
if (LeavingSubmodule) {
+ // We're done with this submodule.
+ Module *M = LeaveSubmodule(/*ForPragma*/false);
+
// Notify the parser that we've left the module.
const char *EndPos = getCurLexerEndPos();
Result.startToken();
CurLexer->BufferPtr = EndPos;
CurLexer->FormTokenWithChars(Result, EndPos, tok::annot_module_end);
Result.setAnnotationEndLoc(Result.getLocation());
- Result.setAnnotationValue(CurSubmodule);
-
- // We're done with this submodule.
- LeaveSubmodule();
+ Result.setAnnotationValue(M);
}
// We're done with the #included file.
@@ -429,6 +495,11 @@ bool Preprocessor::HandleEndOfFile(Token &Result, bool isEndOfMacro) {
PPCallbacks::ExitFile, FileType, ExitedFID);
}
+ // Restore conditional stack from the preamble right after exiting from the
+ // predefines file.
+ if (ExitedFromPredefinesFile)
+ replayPreambleConditionalStack();
+
// Client should lex another token unless we generated an EOM.
return LeavingSubmodule;
}
@@ -474,44 +545,14 @@ bool Preprocessor::HandleEndOfFile(Token &Result, bool isEndOfMacro) {
}
// If we are building a module that has an umbrella header, make sure that
- // each of the headers within the directory covered by the umbrella header
- // was actually included by the umbrella header.
+ // each of the headers within the directory, including all submodules, is
+ // covered by the umbrella header was actually included by the umbrella
+ // header.
if (Module *Mod = getCurrentModule()) {
- if (Mod->getUmbrellaHeader()) {
- SourceLocation StartLoc
- = SourceMgr.getLocForStartOfFile(SourceMgr.getMainFileID());
-
- if (!getDiagnostics().isIgnored(diag::warn_uncovered_module_header,
- StartLoc)) {
- ModuleMap &ModMap = getHeaderSearchInfo().getModuleMap();
- const DirectoryEntry *Dir = Mod->getUmbrellaDir().Entry;
- vfs::FileSystem &FS = *FileMgr.getVirtualFileSystem();
- std::error_code EC;
- for (vfs::recursive_directory_iterator Entry(FS, Dir->getName(), EC), End;
- Entry != End && !EC; Entry.increment(EC)) {
- using llvm::StringSwitch;
-
- // Check whether this entry has an extension typically associated with
- // headers.
- if (!StringSwitch<bool>(llvm::sys::path::extension(Entry->getName()))
- .Cases(".h", ".H", ".hh", ".hpp", true)
- .Default(false))
- continue;
-
- if (const FileEntry *Header =
- getFileManager().getFile(Entry->getName()))
- if (!getSourceManager().hasFileInfo(Header)) {
- if (!ModMap.isHeaderInUnavailableModule(Header)) {
- // Find the relative path that would access this header.
- SmallString<128> RelativePath;
- computeRelativePath(FileMgr, Dir, Header, RelativePath);
- Diag(StartLoc, diag::warn_uncovered_module_header)
- << Mod->getFullModuleName() << RelativePath;
- }
- }
- }
- }
- }
+ llvm::SmallVector<const Module *, 4> AllMods;
+ collectAllSubModulesWithUmbrellaHeader(*Mod, AllMods);
+ for (auto *M : AllMods)
+ diagnoseMissingHeaderInUmbrellaDir(*M);
}
return true;
@@ -617,11 +658,13 @@ void Preprocessor::HandleMicrosoftCommentPaste(Token &Tok) {
assert(!FoundLexer && "Lexer should return EOD before EOF in PP mode");
}
-void Preprocessor::EnterSubmodule(Module *M, SourceLocation ImportLoc) {
+void Preprocessor::EnterSubmodule(Module *M, SourceLocation ImportLoc,
+ bool ForPragma) {
if (!getLangOpts().ModulesLocalVisibility) {
// Just track that we entered this submodule.
- BuildingSubmoduleStack.push_back(BuildingSubmoduleInfo(
- M, ImportLoc, CurSubmoduleState, PendingModuleMacroNames.size()));
+ BuildingSubmoduleStack.push_back(
+ BuildingSubmoduleInfo(M, ImportLoc, ForPragma, CurSubmoduleState,
+ PendingModuleMacroNames.size()));
return;
}
@@ -662,8 +705,9 @@ void Preprocessor::EnterSubmodule(Module *M, SourceLocation ImportLoc) {
}
// Track that we entered this module.
- BuildingSubmoduleStack.push_back(BuildingSubmoduleInfo(
- M, ImportLoc, CurSubmoduleState, PendingModuleMacroNames.size()));
+ BuildingSubmoduleStack.push_back(
+ BuildingSubmoduleInfo(M, ImportLoc, ForPragma, CurSubmoduleState,
+ PendingModuleMacroNames.size()));
// Switch to this submodule as the current submodule.
CurSubmoduleState = &State;
@@ -686,13 +730,19 @@ bool Preprocessor::needModuleMacros() const {
return getLangOpts().isCompilingModule();
}
-void Preprocessor::LeaveSubmodule() {
+Module *Preprocessor::LeaveSubmodule(bool ForPragma) {
+ if (BuildingSubmoduleStack.empty() ||
+ BuildingSubmoduleStack.back().IsPragma != ForPragma) {
+ assert(ForPragma && "non-pragma module enter/leave mismatch");
+ return nullptr;
+ }
+
auto &Info = BuildingSubmoduleStack.back();
Module *LeavingMod = Info.M;
SourceLocation ImportLoc = Info.ImportLoc;
- if (!needModuleMacros() ||
+ if (!needModuleMacros() ||
(!getLangOpts().ModulesLocalVisibility &&
LeavingMod->getTopLevelModuleName() != getLangOpts().CurrentModule)) {
// If we don't need module macros, or this is not a module for which we
@@ -700,7 +750,7 @@ void Preprocessor::LeaveSubmodule() {
// of pending names for the surrounding submodule.
BuildingSubmoduleStack.pop_back();
makeModuleVisible(LeavingMod, ImportLoc);
- return;
+ return LeavingMod;
}
// Create ModuleMacros for any macros defined in this submodule.
@@ -738,17 +788,6 @@ void Preprocessor::LeaveSubmodule() {
for (auto *MD = Macro.getLatest(); MD != OldMD; MD = MD->getPrevious()) {
assert(MD && "broken macro directive chain");
- // Stop on macros defined in other submodules of this module that we
- // #included along the way. There's no point doing this if we're
- // tracking local submodule visibility, since there can be no such
- // directives in our list.
- if (!getLangOpts().ModulesLocalVisibility) {
- Module *Mod = getModuleContainingLocation(MD->getLocation());
- if (Mod != LeavingMod &&
- Mod->getTopLevelModule() == LeavingMod->getTopLevelModule())
- break;
- }
-
if (auto *VisMD = dyn_cast<VisibilityMacroDirective>(MD)) {
// The latest visibility directive for a name in a submodule affects
// all the directives that come before it.
@@ -770,6 +809,13 @@ void Preprocessor::LeaveSubmodule() {
if (Def || !Macro.getOverriddenMacros().empty())
addModuleMacro(LeavingMod, II, Def,
Macro.getOverriddenMacros(), IsNew);
+
+ if (!getLangOpts().ModulesLocalVisibility) {
+ // This macro is exposed to the rest of this compilation as a
+ // ModuleMacro; we don't need to track its MacroDirective any more.
+ Macro.setLatest(nullptr);
+ Macro.setOverriddenMacros(*this, {});
+ }
break;
}
}
@@ -789,4 +835,5 @@ void Preprocessor::LeaveSubmodule() {
// A nested #include makes the included submodule visible.
makeModuleVisible(LeavingMod, ImportLoc);
+ return LeavingMod;
}
OpenPOWER on IntegriCloud