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-rw-r--r--clang/lib/Frontend/ASTUnit.cpp2
-rw-r--r--clang/lib/Lex/PPDirectives.cpp20
2 files changed, 18 insertions, 4 deletions
diff --git a/clang/lib/Frontend/ASTUnit.cpp b/clang/lib/Frontend/ASTUnit.cpp
index ac6e6b6048e..35348ffe13b 100644
--- a/clang/lib/Frontend/ASTUnit.cpp
+++ b/clang/lib/Frontend/ASTUnit.cpp
@@ -1735,6 +1735,7 @@ ASTUnit *ASTUnit::LoadFromCommandLine(
bool CacheCodeCompletionResults, bool IncludeBriefCommentsInCodeCompletion,
bool AllowPCHWithCompilerErrors, SkipFunctionBodiesScope SkipFunctionBodies,
bool SingleFileParse, bool UserFilesAreVolatile, bool ForSerialization,
+ bool RetainExcludedConditionalBlocks,
llvm::Optional<StringRef> ModuleFormat, std::unique_ptr<ASTUnit> *ErrAST,
IntrusiveRefCntPtr<llvm::vfs::FileSystem> VFS) {
assert(Diags.get() && "no DiagnosticsEngine was provided");
@@ -1762,6 +1763,7 @@ ASTUnit *ASTUnit::LoadFromCommandLine(
PPOpts.RemappedFilesKeepOriginalName = RemappedFilesKeepOriginalName;
PPOpts.AllowPCHWithCompilerErrors = AllowPCHWithCompilerErrors;
PPOpts.SingleFileParseMode = SingleFileParse;
+ PPOpts.RetainExcludedConditionalBlocks = RetainExcludedConditionalBlocks;
// Override the resources path.
CI->getHeaderSearchOpts().ResourceDir = ResourceFilesPath;
diff --git a/clang/lib/Lex/PPDirectives.cpp b/clang/lib/Lex/PPDirectives.cpp
index 5eac1da115c..525f95b96e0 100644
--- a/clang/lib/Lex/PPDirectives.cpp
+++ b/clang/lib/Lex/PPDirectives.cpp
@@ -2855,6 +2855,9 @@ void Preprocessor::HandleIfdefDirective(Token &Result,
Callbacks->Ifdef(DirectiveTok.getLocation(), MacroNameTok, MD);
}
+ bool RetainExcludedCB = PPOpts->RetainExcludedConditionalBlocks &&
+ getSourceManager().isInMainFile(DirectiveTok.getLocation());
+
// Should we include the stuff contained by this directive?
if (PPOpts->SingleFileParseMode && !MI) {
// In 'single-file-parse mode' undefined identifiers trigger parsing of all
@@ -2862,7 +2865,7 @@ void Preprocessor::HandleIfdefDirective(Token &Result,
CurPPLexer->pushConditionalLevel(DirectiveTok.getLocation(),
/*wasskip*/false, /*foundnonskip*/false,
/*foundelse*/false);
- } else if (!MI == isIfndef) {
+ } else if (!MI == isIfndef || RetainExcludedCB) {
// Yes, remember that we are inside a conditional, then lex the next token.
CurPPLexer->pushConditionalLevel(DirectiveTok.getLocation(),
/*wasskip*/false, /*foundnonskip*/true,
@@ -2903,13 +2906,16 @@ void Preprocessor::HandleIfDirective(Token &IfToken,
IfToken.getLocation(), DER.ExprRange,
(ConditionalTrue ? PPCallbacks::CVK_True : PPCallbacks::CVK_False));
+ bool RetainExcludedCB = PPOpts->RetainExcludedConditionalBlocks &&
+ getSourceManager().isInMainFile(IfToken.getLocation());
+
// Should we include the stuff contained by this directive?
if (PPOpts->SingleFileParseMode && DER.IncludedUndefinedIds) {
// In 'single-file-parse mode' undefined identifiers trigger parsing of all
// the directive blocks.
CurPPLexer->pushConditionalLevel(IfToken.getLocation(), /*wasskip*/false,
/*foundnonskip*/false, /*foundelse*/false);
- } else if (ConditionalTrue) {
+ } else if (ConditionalTrue || RetainExcludedCB) {
// Yes, remember that we are inside a conditional, then lex the next token.
CurPPLexer->pushConditionalLevel(IfToken.getLocation(), /*wasskip*/false,
/*foundnonskip*/true, /*foundelse*/false);
@@ -2971,7 +2977,10 @@ void Preprocessor::HandleElseDirective(Token &Result, const Token &HashToken) {
if (Callbacks)
Callbacks->Else(Result.getLocation(), CI.IfLoc);
- if (PPOpts->SingleFileParseMode && !CI.FoundNonSkip) {
+ bool RetainExcludedCB = PPOpts->RetainExcludedConditionalBlocks &&
+ getSourceManager().isInMainFile(Result.getLocation());
+
+ if ((PPOpts->SingleFileParseMode && !CI.FoundNonSkip) || RetainExcludedCB) {
// In 'single-file-parse mode' undefined identifiers trigger parsing of all
// the directive blocks.
CurPPLexer->pushConditionalLevel(CI.IfLoc, /*wasskip*/false,
@@ -3013,7 +3022,10 @@ void Preprocessor::HandleElifDirective(Token &ElifToken,
Callbacks->Elif(ElifToken.getLocation(), ConditionRange,
PPCallbacks::CVK_NotEvaluated, CI.IfLoc);
- if (PPOpts->SingleFileParseMode && !CI.FoundNonSkip) {
+ bool RetainExcludedCB = PPOpts->RetainExcludedConditionalBlocks &&
+ getSourceManager().isInMainFile(ElifToken.getLocation());
+
+ if ((PPOpts->SingleFileParseMode && !CI.FoundNonSkip) || RetainExcludedCB) {
// In 'single-file-parse mode' undefined identifiers trigger parsing of all
// the directive blocks.
CurPPLexer->pushConditionalLevel(ElifToken.getLocation(), /*wasskip*/false,
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