Export clang-format16 via ydblib project

6e6be3a95868fde888d801b7590af4044049563f

1 files changed, 186 insertions, 0 deletions

diff --git a/contrib/libs/clang16/lib/StaticAnalyzer/Core/CheckerHelpers.cpp b/contrib/libs/clang16/lib/StaticAnalyzer/Core/CheckerHelpers.cpp
new file mode 100644
index 0000000000..84ad20a548
--- /dev/null
+++ b/contrib/libs/clang16/lib/StaticAnalyzer/Core/CheckerHelpers.cpp
@@ -0,0 +1,186 @@
+//===---- CheckerHelpers.cpp - Helper functions for checkers ----*- C++ -*-===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+//  This file defines several static functions for use in checkers.
+//
+//===----------------------------------------------------------------------===//
+
+#include "clang/StaticAnalyzer/Core/PathSensitive/CheckerHelpers.h"
+#include "clang/AST/Decl.h"
+#include "clang/AST/Expr.h"
+#include "clang/Lex/Preprocessor.h"
+#include <optional>
+
+namespace clang {
+
+namespace ento {
+
+// Recursively find any substatements containing macros
+bool containsMacro(const Stmt *S) {
+  if (S->getBeginLoc().isMacroID())
+    return true;
+
+  if (S->getEndLoc().isMacroID())
+    return true;
+
+  for (const Stmt *Child : S->children())
+    if (Child && containsMacro(Child))
+      return true;
+
+  return false;
+}
+
+// Recursively find any substatements containing enum constants
+bool containsEnum(const Stmt *S) {
+  const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(S);
+
+  if (DR && isa<EnumConstantDecl>(DR->getDecl()))
+    return true;
+
+  for (const Stmt *Child : S->children())
+    if (Child && containsEnum(Child))
+      return true;
+
+  return false;
+}
+
+// Recursively find any substatements containing static vars
+bool containsStaticLocal(const Stmt *S) {
+  const DeclRefExpr *DR = dyn_cast<DeclRefExpr>(S);
+
+  if (DR)
+    if (const VarDecl *VD = dyn_cast<VarDecl>(DR->getDecl()))
+      if (VD->isStaticLocal())
+        return true;
+
+  for (const Stmt *Child : S->children())
+    if (Child && containsStaticLocal(Child))
+      return true;
+
+  return false;
+}
+
+// Recursively find any substatements containing __builtin_offsetof
+bool containsBuiltinOffsetOf(const Stmt *S) {
+  if (isa<OffsetOfExpr>(S))
+    return true;
+
+  for (const Stmt *Child : S->children())
+    if (Child && containsBuiltinOffsetOf(Child))
+      return true;
+
+  return false;
+}
+
+// Extract lhs and rhs from assignment statement
+std::pair<const clang::VarDecl *, const clang::Expr *>
+parseAssignment(const Stmt *S) {
+  const VarDecl *VD = nullptr;
+  const Expr *RHS = nullptr;
+
+  if (auto Assign = dyn_cast_or_null<BinaryOperator>(S)) {
+    if (Assign->isAssignmentOp()) {
+      // Ordinary assignment
+      RHS = Assign->getRHS();
+      if (auto DE = dyn_cast_or_null<DeclRefExpr>(Assign->getLHS()))
+        VD = dyn_cast_or_null<VarDecl>(DE->getDecl());
+    }
+  } else if (auto PD = dyn_cast_or_null<DeclStmt>(S)) {
+    // Initialization
+    assert(PD->isSingleDecl() && "We process decls one by one");
+    VD = cast<VarDecl>(PD->getSingleDecl());
+    RHS = VD->getAnyInitializer();
+  }
+
+  return std::make_pair(VD, RHS);
+}
+
+Nullability getNullabilityAnnotation(QualType Type) {
+  const auto *AttrType = Type->getAs<AttributedType>();
+  if (!AttrType)
+    return Nullability::Unspecified;
+  if (AttrType->getAttrKind() == attr::TypeNullable)
+    return Nullability::Nullable;
+  else if (AttrType->getAttrKind() == attr::TypeNonNull)
+    return Nullability::Nonnull;
+  return Nullability::Unspecified;
+}
+
+std::optional<int> tryExpandAsInteger(StringRef Macro, const Preprocessor &PP) {
+  const auto *MacroII = PP.getIdentifierInfo(Macro);
+  if (!MacroII)
+    return std::nullopt;
+  const MacroInfo *MI = PP.getMacroInfo(MacroII);
+  if (!MI)
+    return std::nullopt;
+
+  // Filter out parens.
+  std::vector<Token> FilteredTokens;
+  FilteredTokens.reserve(MI->tokens().size());
+  for (auto &T : MI->tokens())
+    if (!T.isOneOf(tok::l_paren, tok::r_paren))
+      FilteredTokens.push_back(T);
+
+  // Parse an integer at the end of the macro definition.
+  const Token &T = FilteredTokens.back();
+  // FIXME: EOF macro token coming from a PCH file on macOS while marked as
+  //        literal, doesn't contain any literal data
+  if (!T.isLiteral() || !T.getLiteralData())
+    return std::nullopt;
+  StringRef ValueStr = StringRef(T.getLiteralData(), T.getLength());
+  llvm::APInt IntValue;
+  constexpr unsigned AutoSenseRadix = 0;
+  if (ValueStr.getAsInteger(AutoSenseRadix, IntValue))
+    return std::nullopt;
+
+  // Parse an optional minus sign.
+  size_t Size = FilteredTokens.size();
+  if (Size >= 2) {
+    if (FilteredTokens[Size - 2].is(tok::minus))
+      IntValue = -IntValue;
+  }
+
+  return IntValue.getSExtValue();
+}
+
+OperatorKind operationKindFromOverloadedOperator(OverloadedOperatorKind OOK,
+                                                 bool IsBinary) {
+  llvm::StringMap<BinaryOperatorKind> BinOps{
+#define BINARY_OPERATION(Name, Spelling) {Spelling, BO_##Name},
+#include "clang/AST/OperationKinds.def"
+  };
+  llvm::StringMap<UnaryOperatorKind> UnOps{
+#define UNARY_OPERATION(Name, Spelling) {Spelling, UO_##Name},
+#include "clang/AST/OperationKinds.def"
+  };
+
+  switch (OOK) {
+#define OVERLOADED_OPERATOR(Name, Spelling, Token, Unary, Binary, MemberOnly)  \
+  case OO_##Name:                                                              \
+    if (IsBinary) {                                                            \
+      auto BinOpIt = BinOps.find(Spelling);                                    \
+      if (BinOpIt != BinOps.end())                                             \
+        return OperatorKind(BinOpIt->second);                                  \
+      else                                                                     \
+        llvm_unreachable("operator was expected to be binary but is not");     \
+    } else {                                                                   \
+      auto UnOpIt = UnOps.find(Spelling);                                      \
+      if (UnOpIt != UnOps.end())                                               \
+        return OperatorKind(UnOpIt->second);                                   \
+      else                                                                     \
+        llvm_unreachable("operator was expected to be unary but is not");      \
+    }                                                                          \
+    break;
+#include "clang/Basic/OperatorKinds.def"
+  default:
+    llvm_unreachable("unexpected operator kind");
+  }
+}
+
+} // namespace ento
+} // namespace clang