clang-tidy: Use default member initialization

.clang-tidy

@@ -15,7 +15,6 @@ modernize-*,\
 -modernize-raw-string-literal,\
 -modernize-return-braced-init-list,\
 -modernize-use-auto,\
--modernize-use-default-member-init,\
 -modernize-use-emplace,\
 -modernize-use-equals-default,\
 -modernize-use-equals-delete,\
@@ -36,4 +35,7 @@ readability-*,\
 -readability-simplify-boolean-expr,\
 "
 HeaderFilterRegex: 'Source/cm[^/]*\.(h|hxx|cxx)$'
+CheckOptions:
+  - key:   modernize-use-default-member-init.UseAssignment
+    value: '1'
 ...

Source/CTest/cmCTestBuildHandler.cxx

@@ -503,10 +503,7 @@ public:
     : FTC(ftc)
   {
   }
-  FragmentCompare()
-    : FTC(nullptr)
-  {
-  }
+  FragmentCompare() {}
   bool operator()(std::string const& l, std::string const& r) const
   {
     // Order files by modification time.  Use lexicographic order
@@ -520,7 +517,7 @@ public:
   }
 
 private:
-  cmFileTimeComparison* FTC;
+  cmFileTimeComparison* FTC = nullptr;
 };
 
 void cmCTestBuildHandler::GenerateXMLLaunched(cmXMLWriter& xml)

Source/CTest/cmCTestGIT.cxx

@@ -475,13 +475,9 @@ private:
   {
     std::string Name;
     std::string EMail;
-    unsigned long Time;
-    long TimeZone;
-    Person()
-      : Time(0)
-      , TimeZone(0)
-    {
-    }
+    unsigned long Time = 0;
+    long TimeZone = 0;
+    Person() {}
   };
 
   void ParsePerson(const char* str, Person& person)

Source/cmCPluginAPI.cxx

@@ -475,11 +475,8 @@ int CCONV cmGetTotalArgumentSize(int argc, char** argv)
 // API for source files.
 struct cmCPluginAPISourceFile
 {
-  cmCPluginAPISourceFile()
-    : RealSourceFile(nullptr)
-  {
-  }
-  cmSourceFile* RealSourceFile;
+  cmCPluginAPISourceFile() {}
+  cmSourceFile* RealSourceFile = nullptr;
   std::string SourceName;
   std::string SourceExtension;
   std::string FullPath;

Source/cmCTest.h

@@ -57,10 +57,7 @@ public:
   /** Representation of one part.  */
   struct PartInfo
   {
-    PartInfo()
-      : Enabled(false)
-    {
-    }
+    PartInfo() {}
 
     void SetName(const std::string& name) { this->Name = name; }
     const std::string& GetName() const { return this->Name; }
@@ -71,7 +68,7 @@ public:
     std::vector<std::string> SubmitFiles;
 
   private:
-    bool Enabled;
+    bool Enabled = false;
     std::string Name;
   };
 #ifdef CMAKE_BUILD_WITH_CMAKE

Source/cmCacheManager.h

@@ -34,20 +34,15 @@ private:
   struct CacheEntry
   {
     std::string Value;
-    cmStateEnums::CacheEntryType Type;
+    cmStateEnums::CacheEntryType Type = cmStateEnums::UNINITIALIZED;
     cmPropertyMap Properties;
     std::vector<std::string> GetPropertyList() const;
     const char* GetProperty(const std::string&) const;
     void SetProperty(const std::string& property, const char* value);
     void AppendProperty(const std::string& property, const char* value,
                         bool asString = false);
-    bool Initialized;
-    CacheEntry()
-      : Value("")
-      , Type(cmStateEnums::UNINITIALIZED)
-      , Initialized(false)
-    {
-    }
+    bool Initialized = false;
+    CacheEntry() {}
   };
 
 public:

Source/cmCommand.h

@@ -30,10 +30,7 @@ public:
   /**
    * Construct the command. By default it has no makefile.
    */
-  cmCommand()
-    : Makefile(nullptr)
-  {
-  }
+  cmCommand() {}
 
   /**
    * Need virtual destructor to destroy real command type.
@@ -90,7 +87,7 @@ public:
   void SetError(const std::string& e);
 
 protected:
-  cmMakefile* Makefile;
+  cmMakefile* Makefile = nullptr;
 
 private:
   std::string Error;

Source/cmComputeLinkDepends.h

@@ -35,15 +35,10 @@ public:
   struct LinkEntry
   {
     std::string Item;
-    cmGeneratorTarget const* Target;
-    bool IsSharedDep;
-    bool IsFlag;
-    LinkEntry()
-      : Target(nullptr)
-      , IsSharedDep(false)
-      , IsFlag(false)
-    {
-    }
+    cmGeneratorTarget const* Target = nullptr;
+    bool IsSharedDep = false;
+    bool IsFlag = false;
+    LinkEntry() {}
     LinkEntry(LinkEntry const& r)
       : Item(r.Item)
       , Target(r.Target)

Source/cmComputeLinkInformation.h

@@ -30,11 +30,7 @@ public:
 
   struct Item
   {
-    Item()
-      : IsPath(true)
-      , Target(nullptr)
-    {
-    }
+    Item() {}
     Item(std::string const& v, bool p,
          cmGeneratorTarget const* target = nullptr)
       : Value(v)
@@ -43,8 +39,8 @@ public:
     {
     }
     std::string Value;
-    bool IsPath;
-    cmGeneratorTarget const* Target;
+    bool IsPath = true;
+    cmGeneratorTarget const* Target = nullptr;
   };
   typedef std::vector<Item> ItemVector;
   ItemVector const& GetItems() const;

Source/cmCustomCommand.cxx

@@ -18,9 +18,6 @@ cmCustomCommand::cmCustomCommand(cmMakefile const* mf,
   , Comment(comment ? comment : "")
   , WorkingDirectory(workingDirectory ? workingDirectory : "")
   , HaveComment(comment != nullptr)
-  , EscapeAllowMakeVars(false)
-  , EscapeOldStyle(true)
-  , CommandExpandLists(false)
 {
   if (mf) {
     this->Backtrace = mf->GetBacktrace();

Source/cmDefinitions.h

@@ -47,25 +47,19 @@ private:
     typedef std::string std_string;
 
   public:
-    Def()
-      : Exists(false)
-      , Used(false)
-    {
-    }
+    Def() {}
     Def(const char* v)
       : std_string(v ? v : "")
       , Exists(v ? true : false)
-      , Used(false)
     {
     }
     Def(const std_string& v)
       : std_string(v)
       , Exists(true)
-      , Used(false)
     {
     }
-    bool Exists;
-    bool Used;
+    bool Exists = false;
+    bool Used = false;
   };
   static Def NoDef;
 

Source/cmDepends.cxx

@@ -15,10 +15,7 @@
 
 cmDepends::cmDepends(cmLocalGenerator* lg, const char* targetDir)
   : LocalGenerator(lg)
-  , Verbose(false)
-  , FileComparison(nullptr)
   , TargetDirectory(targetDir)
-  , MaxPath(16384)
   , Dependee(new char[MaxPath])
   , Depender(new char[MaxPath])
 {

Source/cmDepends.h

@@ -96,15 +96,15 @@ protected:
   cmLocalGenerator* LocalGenerator;
 
   // Flag for verbose output.
-  bool Verbose;
-  cmFileTimeComparison* FileComparison;
+  bool Verbose = false;
+  cmFileTimeComparison* FileComparison = nullptr;
 
   std::string Language;
 
   // The full path to the target's build directory.
   std::string TargetDirectory;
 
-  size_t MaxPath;
+  size_t MaxPath = 16384;
   char* Dependee;
   char* Depender;
 

Source/cmDependsC.cxx

@@ -20,7 +20,6 @@
 #define INCLUDE_REGEX_TRANSFORM_MARKER "#IncludeRegexTransform: "
 
 cmDependsC::cmDependsC()
-  : ValidDeps(nullptr)
 {
 }
 

Source/cmDependsC.h

@@ -75,16 +75,13 @@ public:
 
   struct cmIncludeLines
   {
-    cmIncludeLines()
-      : Used(false)
-    {
-    }
+    cmIncludeLines() {}
     std::vector<UnscannedEntry> UnscannedEntries;
-    bool Used;
+    bool Used = false;
   };
 
 protected:
-  const std::map<std::string, DependencyVector>* ValidDeps;
+  const std::map<std::string, DependencyVector>* ValidDeps = nullptr;
   std::set<std::string> Encountered;
   std::queue<UnscannedEntry> Unscanned;
 

Source/cmDependsFortran.cxx

@@ -69,7 +69,6 @@ public:
 };
 
 cmDependsFortran::cmDependsFortran()
-  : Internal(nullptr)
 {
 }
 

Source/cmDependsFortran.h

@@ -76,7 +76,7 @@ protected:
   std::set<std::string> PPDefinitions;
 
   // Internal implementation details.
-  cmDependsFortranInternals* Internal;
+  cmDependsFortranInternals* Internal = nullptr;
 
 private:
   std::string MaybeConvertToRelativePath(std::string const& base,

Source/cmDocumentation.h

@@ -116,11 +116,8 @@ private:
 
   struct RequestedHelpItem
   {
-    RequestedHelpItem()
-      : HelpType(None)
-    {
-    }
-    cmDocumentationEnums::Type HelpType;
+    RequestedHelpItem() {}
+    cmDocumentationEnums::Type HelpType = None;
     std::string Filename;
     std::string Argument;
   };

Source/cmDocumentationFormatter.cxx

@@ -11,8 +11,6 @@
 #include <vector>
 
 cmDocumentationFormatter::cmDocumentationFormatter()
-  : TextWidth(77)
-  , TextIndent("")
 {
 }
 

Source/cmDocumentationFormatter.h

@@ -59,8 +59,8 @@ public:
   void SetIndent(const char* indent);
 
 private:
-  int TextWidth;
-  const char* TextIndent;
+  int TextWidth = 77;
+  const char* TextIndent = "";
 };
 
 #endif

Source/cmExecutionStatus.h

@@ -11,13 +11,7 @@
 class cmExecutionStatus
 {
 public:
-  cmExecutionStatus()
-    : ReturnInvoked(false)
-    , BreakInvoked(false)
-    , ContinueInvoked(false)
-    , NestedError(false)
-  {
-  }
+  cmExecutionStatus() {}
 
   void Clear()
   {
@@ -40,10 +34,10 @@ public:
   bool GetNestedError() const { return this->NestedError; }
 
 private:
-  bool ReturnInvoked;
-  bool BreakInvoked;
-  bool ContinueInvoked;
-  bool NestedError;
+  bool ReturnInvoked = false;
+  bool BreakInvoked = false;
+  bool ContinueInvoked = false;
+  bool NestedError = false;
 };
 
 #endif

Source/cmExpandedCommandArgument.cxx

@@ -3,7 +3,6 @@
 #include "cmExpandedCommandArgument.h"
 
 cmExpandedCommandArgument::cmExpandedCommandArgument()
-  : Quoted(false)
 {
 }
 

Source/cmExpandedCommandArgument.h

@@ -33,7 +33,7 @@ public:
 
 private:
   std::string Value;
-  bool Quoted;
+  bool Quoted = false;
 };
 
 #endif

Source/cmExtraCodeLiteGenerator.cxx

@@ -22,7 +22,6 @@
 
 cmExtraCodeLiteGenerator::cmExtraCodeLiteGenerator()
   : ConfigName("NoConfig")
-  , CpuCount(2)
 {
 }
 

Source/cmExtraCodeLiteGenerator.h

@@ -23,7 +23,7 @@ class cmExtraCodeLiteGenerator : public cmExternalMakefileProjectGenerator
 protected:
   std::string ConfigName;
   std::string WorkspacePath;
-  unsigned int CpuCount;
+  unsigned int CpuCount = 2;
 
 protected:
   std::string GetCodeLiteCompilerName(const cmMakefile* mf) const;

Source/cmFileCommand.cxx

@@ -1095,13 +1095,9 @@ protected:
   // Properties set by pattern and regex match rules.
   struct MatchProperties
   {
-    bool Exclude;
-    mode_t Permissions;
-    MatchProperties()
-      : Exclude(false)
-      , Permissions(0)
-    {
-    }
+    bool Exclude = false;
+    mode_t Permissions = 0;
+    MatchProperties() {}
   };
   struct MatchRule
   {

Source/cmFileLock.h

@@ -51,14 +51,13 @@ private:
   cmFileLockResult LockWithTimeout(unsigned long timeoutSec);
 
 #if defined(_WIN32)
-  typedef HANDLE FileId;
+  HANDLE File = INVALID_HANDLE_VALUE;
   BOOL LockFile(DWORD flags);
 #else
-  typedef int FileId;
+  int File = -1;
   int LockFile(int cmd, int type);
 #endif
 
-  FileId File;
   std::string Filename;
 };
 

Source/cmFileLockUnix.cxx

@@ -9,7 +9,6 @@
 #include <unistd.h>
 
 cmFileLock::cmFileLock()
-  : File(-1)
 {
 }
 

Source/cmFileLockWin32.cxx

@@ -6,7 +6,6 @@
 #include <windows.h> // CreateFileW
 
 cmFileLock::cmFileLock()
-  : File(INVALID_HANDLE_VALUE)
 {
 }
 

Source/cmFindLibraryCommand.cxx

@@ -198,13 +198,10 @@ struct cmFindLibraryHelper
   // Current names under consideration.
   struct Name
   {
-    bool TryRaw;
+    bool TryRaw = false;
     std::string Raw;
     cmsys::RegularExpression Regex;
-    Name()
-      : TryRaw(false)
-    {
-    }
+    Name() {}
   };
   std::vector<Name> Names;
 

Source/cmFindPackageCommand.cxx

@@ -1675,10 +1675,7 @@ private:
 class cmFileList
 {
 public:
-  cmFileList()
-    : Last(nullptr)
-  {
-  }
+  cmFileList() {}
   virtual ~cmFileList() {}
   cmFileList& operator/(cmFileListGeneratorBase const& rhs)
   {
@@ -1702,7 +1699,7 @@ private:
   virtual bool Visit(std::string const& fullPath) = 0;
   friend class cmFileListGeneratorBase;
   std::unique_ptr<cmFileListGeneratorBase> First;
-  cmFileListGeneratorBase* Last;
+  cmFileListGeneratorBase* Last = nullptr;
 };
 
 class cmFindPackageFileList : public cmFileList

Source/cmGeneratedFileStream.cxx

@@ -103,18 +103,10 @@ void cmGeneratedFileStream::SetCompressionExtraExtension(bool ext)
 }
 
 cmGeneratedFileStreamBase::cmGeneratedFileStreamBase()
-  : CopyIfDifferent(false)
-  , Okay(false)
-  , Compress(false)
-  , CompressExtraExtension(true)
 {
 }
 
 cmGeneratedFileStreamBase::cmGeneratedFileStreamBase(std::string const& name)
-  : CopyIfDifferent(false)
-  , Okay(false)
-  , Compress(false)
-  , CompressExtraExtension(true)
 {
   this->Open(name);
 }

Source/cmGeneratedFileStream.h

@@ -45,16 +45,16 @@ protected:
   std::string TempName;
 
   // Whether to do a copy-if-different.
-  bool CopyIfDifferent;
+  bool CopyIfDifferent = false;
 
   // Whether the real file stream was valid when it was closed.
-  bool Okay;
+  bool Okay = false;
 
   // Whether the destination file is compressed
-  bool Compress;
+  bool Compress = false;
 
   // Whether the destination file is compressed
-  bool CompressExtraExtension;
+  bool CompressExtraExtension = true;
 };
 
 /** \class cmGeneratedFileStream

Source/cmGeneratorExpressionLexer.cxx

@@ -3,8 +3,6 @@
 #include "cmGeneratorExpressionLexer.h"
 
 cmGeneratorExpressionLexer::cmGeneratorExpressionLexer()
-  : SawBeginExpression(false)
-  , SawGeneratorExpression(false)
 {
 }
 

Source/cmGeneratorExpressionLexer.h

@@ -46,8 +46,8 @@ public:
   }
 
 private:
-  bool SawBeginExpression;
-  bool SawGeneratorExpression;
+  bool SawBeginExpression = false;
+  bool SawGeneratorExpression = false;
 };
 
 #endif

Source/cmGeneratorTarget.h

@@ -110,11 +110,8 @@ public:
     std::set<std::string> ExpectedResxHeaders;
     std::set<std::string> ExpectedXamlHeaders;
     std::set<std::string> ExpectedXamlSources;
-    bool Initialized;
-    KindedSources()
-      : Initialized(false)
-    {
-    }
+    bool Initialized = false;
+    KindedSources() {}
   };
 
   /** Get all sources needed for a configuration with kinds assigned.  */
@@ -565,13 +562,9 @@ public:
   };
   struct SourceFileFlags
   {
-    SourceFileFlags()
-      : Type(SourceFileTypeNormal)
-      , MacFolder(nullptr)
-    {
-    }
-    SourceFileType Type;
-    const char* MacFolder; // location inside Mac content folders
+    SourceFileFlags() {}
+    SourceFileType Type = SourceFileTypeNormal;
+    const char* MacFolder = nullptr; // location inside Mac content folders
   };
   void GetAutoUicOptions(std::vector<std::string>& result,
                          const std::string& config) const;
@@ -757,11 +750,8 @@ private:
 
   struct CompatibleInterfaces : public CompatibleInterfacesBase
   {
-    CompatibleInterfaces()
-      : Done(false)
-    {
-    }
-    bool Done;
+    CompatibleInterfaces() {}
+    bool Done = false;
   };
   mutable std::map<std::string, CompatibleInterfaces> CompatibleInterfacesMap;