[modules] When diagnosing errors in module map files found by 'extern module' declarations, show how we got to that module map file.
llvm-svn: 242105
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@@ -1528,7 +1528,7 @@ void ModuleMapParser::parseModuleDecl() {
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/// 'extern' 'module' module-id string-literal
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void ModuleMapParser::parseExternModuleDecl() {
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assert(Tok.is(MMToken::ExternKeyword));
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consumeToken(); // 'extern' keyword
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SourceLocation ExternLoc = consumeToken(); // 'extern' keyword
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// Parse 'module' keyword.
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if (!Tok.is(MMToken::ModuleKeyword)) {
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@@ -1567,7 +1567,7 @@ void ModuleMapParser::parseExternModuleDecl() {
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File, /*IsSystem=*/false,
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Map.HeaderInfo.getHeaderSearchOpts().ModuleMapFileHomeIsCwd
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? Directory
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: File->getDir());
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: File->getDir(), ExternLoc);
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}
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/// \brief Parse a requires declaration.
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@@ -2319,7 +2319,8 @@ bool ModuleMapParser::parseModuleMapFile() {
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}
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bool ModuleMap::parseModuleMapFile(const FileEntry *File, bool IsSystem,
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const DirectoryEntry *Dir) {
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const DirectoryEntry *Dir,
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SourceLocation ExternModuleLoc) {
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llvm::DenseMap<const FileEntry *, bool>::iterator Known
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= ParsedModuleMap.find(File);
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if (Known != ParsedModuleMap.end())
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@@ -2327,7 +2328,7 @@ bool ModuleMap::parseModuleMapFile(const FileEntry *File, bool IsSystem,
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assert(Target && "Missing target information");
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auto FileCharacter = IsSystem ? SrcMgr::C_System : SrcMgr::C_User;
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FileID ID = SourceMgr.createFileID(File, SourceLocation(), FileCharacter);
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FileID ID = SourceMgr.createFileID(File, ExternModuleLoc, FileCharacter);
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const llvm::MemoryBuffer *Buffer = SourceMgr.getBuffer(ID);
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if (!Buffer)
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return ParsedModuleMap[File] = true;
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