[clang-tidy][NFC] Add google-readability-casting check to codebase (#170980)

clang-tools-extra/clang-tidy/.clang-tidy

@@ -13,6 +13,7 @@ Checks: >
   cppcoreguidelines-missing-std-forward,
   cppcoreguidelines-rvalue-reference-param-not-moved,
   cppcoreguidelines-virtual-class-destructor,
+  google-readability-casting,
   misc-const-correctness,
   modernize-*,
   -modernize-avoid-c-arrays,

clang-tools-extra/clang-tidy/ClangTidyDiagnosticConsumer.cpp

@@ -526,7 +526,8 @@ void ClangTidyDiagnosticConsumer::forwardDiagnostic(const Diagnostic &Info) {
       Builder << Qualifiers::fromOpaqueValue(Info.getRawArg(Index));
       break;
     case clang::DiagnosticsEngine::ak_qualtype:
-      Builder << QualType::getFromOpaquePtr((void *)Info.getRawArg(Index));
+      Builder << QualType::getFromOpaquePtr(
+          reinterpret_cast<void *>(Info.getRawArg(Index)));
       break;
     case clang::DiagnosticsEngine::ak_declarationname:
       Builder << DeclarationName::getFromOpaqueInteger(Info.getRawArg(Index));

clang-tools-extra/clang-tidy/altera/StructPackAlignCheck.cpp

@@ -63,9 +63,8 @@ void StructPackAlignCheck::check(const MatchFinder::MatchResult &Result) {
     const QualType StructFieldTy = StructField->getType();
     if (StructFieldTy->isIncompleteType())
       return;
-    const unsigned int StructFieldWidth =
-        (unsigned int)Result.Context->getTypeInfo(StructFieldTy.getTypePtr())
-            .Width;
+    const unsigned int StructFieldWidth = static_cast<unsigned int>(
+        Result.Context->getTypeInfo(StructFieldTy.getTypePtr()).Width);
     FieldSizes.emplace_back(StructFieldWidth, StructField->getFieldIndex());
     // FIXME: Recommend a reorganization of the struct (sort by StructField
     // size, largest to smallest).
@@ -79,7 +78,7 @@ void StructPackAlignCheck::check(const MatchFinder::MatchResult &Result) {
       CharUnits::fromQuantity(std::max<clang::CharUnits::QuantityType>(
           std::ceil(static_cast<float>(TotalBitSize) / CharSize), 1));
   const CharUnits MaxAlign = CharUnits::fromQuantity(
-      std::ceil((float)Struct->getMaxAlignment() / CharSize));
+      std::ceil(static_cast<float>(Struct->getMaxAlignment()) / CharSize));
   const CharUnits CurrAlign =
       Result.Context->getASTRecordLayout(Struct).getAlignment();
   const CharUnits NewAlign = computeRecommendedAlignment(MinByteSize);
@@ -99,8 +98,7 @@ void StructPackAlignCheck::check(const MatchFinder::MatchResult &Result) {
     diag(Struct->getLocation(),
          "accessing fields in struct %0 is inefficient due to padding; only "
          "needs %1 bytes but is using %2 bytes")
-        << Struct << (int)MinByteSize.getQuantity()
-        << (int)CurrSize.getQuantity()
+        << Struct << MinByteSize.getQuantity() << CurrSize.getQuantity()
         << FixItHint::CreateInsertion(Struct->getEndLoc().getLocWithOffset(1),
                                       " __attribute__((packed))");
     diag(Struct->getLocation(),
@@ -112,8 +110,7 @@ void StructPackAlignCheck::check(const MatchFinder::MatchResult &Result) {
 
   FixItHint FixIt;
   auto *Attribute = Struct->getAttr<AlignedAttr>();
-  const std::string NewAlignQuantity =
-      std::to_string((int)NewAlign.getQuantity());
+  const std::string NewAlignQuantity = std::to_string(NewAlign.getQuantity());
   if (Attribute) {
     FixIt = FixItHint::CreateReplacement(
         Attribute->getRange(),
@@ -130,7 +127,7 @@ void StructPackAlignCheck::check(const MatchFinder::MatchResult &Result) {
     diag(Struct->getLocation(),
          "accessing fields in struct %0 is inefficient due to poor alignment; "
          "currently aligned to %1 bytes, but recommended alignment is %2 bytes")
-        << Struct << (int)CurrAlign.getQuantity() << NewAlignQuantity << FixIt;
+        << Struct << CurrAlign.getQuantity() << NewAlignQuantity << FixIt;
 
     diag(Struct->getLocation(),
          "use \"__attribute__((aligned(%0)))\" to align struct %1 to %0 bytes",

clang-tools-extra/clang-tidy/altera/UnrollLoopsCheck.cpp

@@ -208,20 +208,22 @@ bool UnrollLoopsCheck::hasLargeNumIterations(const Stmt *Statement,
       return true;
     switch (Op->getOpcode()) {
     case (BO_AddAssign):
-      Iterations = std::ceil(float(EndValue - InitValue) / ConstantValue);
+      Iterations =
+          std::ceil(static_cast<float>(EndValue - InitValue) / ConstantValue);
       break;
     case (BO_SubAssign):
-      Iterations = std::ceil(float(InitValue - EndValue) / ConstantValue);
+      Iterations =
+          std::ceil(static_cast<float>(InitValue - EndValue) / ConstantValue);
       break;
     case (BO_MulAssign):
-      Iterations =
-          1 + ((std::log((double)EndValue) - std::log((double)InitValue)) /
-               std::log((double)ConstantValue));
+      Iterations = 1 + ((std::log(static_cast<double>(EndValue)) -
+                         std::log(static_cast<double>(InitValue))) /
+                        std::log(static_cast<double>(ConstantValue)));
       break;
     case (BO_DivAssign):
-      Iterations =
-          1 + ((std::log((double)InitValue) - std::log((double)EndValue)) /
-               std::log((double)ConstantValue));
+      Iterations = 1 + ((std::log(static_cast<double>(InitValue)) -
+                         std::log(static_cast<double>(EndValue))) /
+                        std::log(static_cast<double>(ConstantValue)));
       break;
     default:
       // All other operators are not handled; assume large bounds.

clang-tools-extra/clang-tidy/bugprone/SuspiciousMissingCommaCheck.cpp

@@ -116,7 +116,7 @@ void SuspiciousMissingCommaCheck::check(
 
   // Warn only when concatenation is not common in this initializer list.
   // The current threshold is set to less than 1/5 of the string literals.
-  if (double(Count) / Size > RatioThreshold)
+  if (static_cast<double>(Count) / Size > RatioThreshold)
     return;
 
   diag(ConcatenatedLiteral->getBeginLoc(),

clang-tools-extra/clang-tidy/misc/ConfusableIdentifierCheck.cpp

@@ -81,7 +81,8 @@ static llvm::SmallString<64U> skeleton(StringRef Name) {
         errs() << "Unicode conversion issue\n";
         break;
       }
-      Skeleton.append((char *)BufferStart, (char *)IBuffer);
+      Skeleton.append(reinterpret_cast<char *>(BufferStart),
+                      reinterpret_cast<char *>(IBuffer));
     }
   }
   return Skeleton;

clang-tools-extra/clang-tidy/misc/MisleadingBidirectionalCheck.cpp

@@ -52,8 +52,9 @@ static bool containsMisleadingBidi(StringRef Buffer,
     }
     llvm::UTF32 CodePoint = 0;
     const llvm::ConversionResult Result = llvm::convertUTF8Sequence(
-        (const llvm::UTF8 **)&CurPtr, (const llvm::UTF8 *)Buffer.end(),
-        &CodePoint, llvm::strictConversion);
+        reinterpret_cast<const llvm::UTF8 **>(&CurPtr),
+        reinterpret_cast<const llvm::UTF8 *>(Buffer.end()), &CodePoint,
+        llvm::strictConversion);
 
     // If conversion fails, utf-8 is designed so that we can just try next char.
     if (Result != llvm::conversionOK) {

clang-tools-extra/clang-tidy/misc/MisleadingIdentifierCheck.cpp

@@ -125,7 +125,8 @@ static bool hasRTLCharacters(StringRef Buffer) {
   while (CurPtr < EndPtr) {
     llvm::UTF32 CodePoint = 0;
     const llvm::ConversionResult Result = llvm::convertUTF8Sequence(
-        (const llvm::UTF8 **)&CurPtr, (const llvm::UTF8 *)EndPtr, &CodePoint,
+        reinterpret_cast<const llvm::UTF8 **>(&CurPtr),
+        reinterpret_cast<const llvm::UTF8 *>(EndPtr), &CodePoint,
         llvm::strictConversion);
     if (Result != llvm::conversionOK)
       break;

clang-tools-extra/clang-tidy/openmp/UseDefaultNoneCheck.cpp

@@ -37,8 +37,9 @@ void UseDefaultNoneCheck::check(const MatchFinder::MatchResult &Result) {
          "OpenMP directive '%0' specifies 'default(%1)' clause, consider using "
          "'default(none)' clause instead")
         << getOpenMPDirectiveName(Directive->getDirectiveKind())
-        << getOpenMPSimpleClauseTypeName(Clause->getClauseKind(),
-                                         unsigned(Clause->getDefaultKind()));
+        << getOpenMPSimpleClauseTypeName(
+               Clause->getClauseKind(),
+               llvm::to_underlying(Clause->getDefaultKind()));
     diag(Clause->getBeginLoc(), "existing 'default' clause specified here",
          DiagnosticIDs::Note);
     return;

clang-tools-extra/clang-tidy/readability/FunctionCognitiveComplexityCheck.cpp

@@ -557,7 +557,7 @@ void FunctionCognitiveComplexityCheck::check(
     // Increase, on the other hand, can be 0.
 
     diag(Detail.Loc, Msgs[MsgId], DiagnosticIDs::Note)
-        << (unsigned)Increase << (unsigned)Detail.Nesting << 1 + Detail.Nesting;
+        << Increase << Detail.Nesting << 1 + Detail.Nesting;
   }
 }