llvm/clang/lib/AST/Expr.cpp

//===--- Expr.cpp - Expression AST Node Implementation --------------------===//
//
// 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 implements the Expr class and subclasses.
//
//===----------------------------------------------------------------------===//

#include "clang/AST/Expr.h"
#include "clang/AST/APValue.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTLambda.h"
#include "clang/AST/Attr.h"
#include "clang/AST/ComputeDependence.h"
#include "clang/AST/DeclCXX.h"
#include "clang/AST/DeclObjC.h"
#include "clang/AST/DeclTemplate.h"
#include "clang/AST/DependenceFlags.h"
#include "clang/AST/EvaluatedExprVisitor.h"
#include "clang/AST/ExprCXX.h"
#include "clang/AST/IgnoreExpr.h"
#include "clang/AST/Mangle.h"
#include "clang/AST/RecordLayout.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/CharInfo.h"
#include "clang/Basic/SourceManager.h"
#include "clang/Basic/TargetInfo.h"
#include "clang/Lex/Lexer.h"
#include "clang/Lex/LiteralSupport.h"
#include "clang/Lex/Preprocessor.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Format.h"
#include "llvm/Support/raw_ostream.h"
#include <algorithm>
#include <cstring>
#include <optional>
usingnamespaceclang;

const Expr *Expr::getBestDynamicClassTypeExpr() const { … }

const CXXRecordDecl *Expr::getBestDynamicClassType() const { … }

const Expr *Expr::skipRValueSubobjectAdjustments(
    SmallVectorImpl<const Expr *> &CommaLHSs,
    SmallVectorImpl<SubobjectAdjustment> &Adjustments) const { … }

bool Expr::isKnownToHaveBooleanValue(bool Semantic) const { … }

bool Expr::isFlexibleArrayMemberLike(
    ASTContext &Ctx,
    LangOptions::StrictFlexArraysLevelKind StrictFlexArraysLevel,
    bool IgnoreTemplateOrMacroSubstitution) const { … }

const ValueDecl *
Expr::getAsBuiltinConstantDeclRef(const ASTContext &Context) const { … }

// Amusing macro metaprogramming hack: check whether a class provides
// a more specific implementation of getExprLoc().
//
// See also Stmt.cpp:{getBeginLoc(),getEndLoc()}.
namespace {
  /// This implementation is used when a class provides a custom
  /// implementation of getExprLoc.
  template <class E, class T>
  SourceLocation getExprLocImpl(const Expr *expr,
                                SourceLocation (T::*v)() const) { … }

  /// This implementation is used when a class doesn't provide
  /// a custom implementation of getExprLoc.  Overload resolution
  /// should pick it over the implementation above because it's
  /// more specialized according to function template partial ordering.
  template <class E>
  SourceLocation getExprLocImpl(const Expr *expr,
                                SourceLocation (Expr::*v)() const) { … }
}

QualType Expr::getEnumCoercedType(const ASTContext &Ctx) const { … }

SourceLocation Expr::getExprLoc() const { … }

//===----------------------------------------------------------------------===//
// Primary Expressions.
//===----------------------------------------------------------------------===//

static void AssertResultStorageKind(ConstantResultStorageKind Kind) { … }

ConstantResultStorageKind ConstantExpr::getStorageKind(const APValue &Value) { … }

ConstantResultStorageKind
ConstantExpr::getStorageKind(const Type *T, const ASTContext &Context) { … }

ConstantExpr::ConstantExpr(Expr *SubExpr, ConstantResultStorageKind StorageKind,
                           bool IsImmediateInvocation)
    : … { … }

ConstantExpr *ConstantExpr::Create(const ASTContext &Context, Expr *E,
                                   ConstantResultStorageKind StorageKind,
                                   bool IsImmediateInvocation) { … }

ConstantExpr *ConstantExpr::Create(const ASTContext &Context, Expr *E,
                                   const APValue &Result) { … }

ConstantExpr::ConstantExpr(EmptyShell Empty,
                           ConstantResultStorageKind StorageKind)
    : … { … }

ConstantExpr *ConstantExpr::CreateEmpty(const ASTContext &Context,
                                        ConstantResultStorageKind StorageKind) { … }

void ConstantExpr::MoveIntoResult(APValue &Value, const ASTContext &Context) { … }

llvm::APSInt ConstantExpr::getResultAsAPSInt() const { … }

APValue ConstantExpr::getAPValueResult() const { … }

DeclRefExpr::DeclRefExpr(const ASTContext &Ctx, ValueDecl *D,
                         bool RefersToEnclosingVariableOrCapture, QualType T,
                         ExprValueKind VK, SourceLocation L,
                         const DeclarationNameLoc &LocInfo,
                         NonOdrUseReason NOUR)
    : … { … }

DeclRefExpr::DeclRefExpr(const ASTContext &Ctx,
                         NestedNameSpecifierLoc QualifierLoc,
                         SourceLocation TemplateKWLoc, ValueDecl *D,
                         bool RefersToEnclosingVariableOrCapture,
                         const DeclarationNameInfo &NameInfo, NamedDecl *FoundD,
                         const TemplateArgumentListInfo *TemplateArgs,
                         QualType T, ExprValueKind VK, NonOdrUseReason NOUR)
    : … { … }

DeclRefExpr *DeclRefExpr::Create(const ASTContext &Context,
                                 NestedNameSpecifierLoc QualifierLoc,
                                 SourceLocation TemplateKWLoc, ValueDecl *D,
                                 bool RefersToEnclosingVariableOrCapture,
                                 SourceLocation NameLoc, QualType T,
                                 ExprValueKind VK, NamedDecl *FoundD,
                                 const TemplateArgumentListInfo *TemplateArgs,
                                 NonOdrUseReason NOUR) { … }

DeclRefExpr *DeclRefExpr::Create(const ASTContext &Context,
                                 NestedNameSpecifierLoc QualifierLoc,
                                 SourceLocation TemplateKWLoc, ValueDecl *D,
                                 bool RefersToEnclosingVariableOrCapture,
                                 const DeclarationNameInfo &NameInfo,
                                 QualType T, ExprValueKind VK,
                                 NamedDecl *FoundD,
                                 const TemplateArgumentListInfo *TemplateArgs,
                                 NonOdrUseReason NOUR) { … }

DeclRefExpr *DeclRefExpr::CreateEmpty(const ASTContext &Context,
                                      bool HasQualifier,
                                      bool HasFoundDecl,
                                      bool HasTemplateKWAndArgsInfo,
                                      unsigned NumTemplateArgs) { … }

void DeclRefExpr::setDecl(ValueDecl *NewD) { … }

SourceLocation DeclRefExpr::getBeginLoc() const { … }
SourceLocation DeclRefExpr::getEndLoc() const { … }

SYCLUniqueStableNameExpr::SYCLUniqueStableNameExpr(SourceLocation OpLoc,
                                                   SourceLocation LParen,
                                                   SourceLocation RParen,
                                                   QualType ResultTy,
                                                   TypeSourceInfo *TSI)
    : … { … }

SYCLUniqueStableNameExpr::SYCLUniqueStableNameExpr(EmptyShell Empty,
                                                   QualType ResultTy)
    : … { … }

SYCLUniqueStableNameExpr *
SYCLUniqueStableNameExpr::Create(const ASTContext &Ctx, SourceLocation OpLoc,
                                 SourceLocation LParen, SourceLocation RParen,
                                 TypeSourceInfo *TSI) { … }

SYCLUniqueStableNameExpr *
SYCLUniqueStableNameExpr::CreateEmpty(const ASTContext &Ctx) { … }

std::string SYCLUniqueStableNameExpr::ComputeName(ASTContext &Context) const { … }

std::string SYCLUniqueStableNameExpr::ComputeName(ASTContext &Context,
                                                  QualType Ty) { … }

PredefinedExpr::PredefinedExpr(SourceLocation L, QualType FNTy,
                               PredefinedIdentKind IK, bool IsTransparent,
                               StringLiteral *SL)
    : … { … }

PredefinedExpr::PredefinedExpr(EmptyShell Empty, bool HasFunctionName)
    : … { … }

PredefinedExpr *PredefinedExpr::Create(const ASTContext &Ctx, SourceLocation L,
                                       QualType FNTy, PredefinedIdentKind IK,
                                       bool IsTransparent, StringLiteral *SL) { … }

PredefinedExpr *PredefinedExpr::CreateEmpty(const ASTContext &Ctx,
                                            bool HasFunctionName) { … }

StringRef PredefinedExpr::getIdentKindName(PredefinedIdentKind IK) { … }

// FIXME: Maybe this should use DeclPrinter with a special "print predefined
// expr" policy instead.
std::string PredefinedExpr::ComputeName(PredefinedIdentKind IK,
                                        const Decl *CurrentDecl,
                                        bool ForceElaboratedPrinting) { … }

void APNumericStorage::setIntValue(const ASTContext &C,
                                   const llvm::APInt &Val) { … }

IntegerLiteral::IntegerLiteral(const ASTContext &C, const llvm::APInt &V,
                               QualType type, SourceLocation l)
    : … { … }

IntegerLiteral *
IntegerLiteral::Create(const ASTContext &C, const llvm::APInt &V,
                       QualType type, SourceLocation l) { … }

IntegerLiteral *
IntegerLiteral::Create(const ASTContext &C, EmptyShell Empty) { … }

FixedPointLiteral::FixedPointLiteral(const ASTContext &C, const llvm::APInt &V,
                                     QualType type, SourceLocation l,
                                     unsigned Scale)
    : … { … }

FixedPointLiteral *FixedPointLiteral::CreateFromRawInt(const ASTContext &C,
                                                       const llvm::APInt &V,
                                                       QualType type,
                                                       SourceLocation l,
                                                       unsigned Scale) { … }

FixedPointLiteral *FixedPointLiteral::Create(const ASTContext &C,
                                             EmptyShell Empty) { … }

std::string FixedPointLiteral::getValueAsString(unsigned Radix) const { … }

void CharacterLiteral::print(unsigned Val, CharacterLiteralKind Kind,
                             raw_ostream &OS) { … }

FloatingLiteral::FloatingLiteral(const ASTContext &C, const llvm::APFloat &V,
                                 bool isexact, QualType Type, SourceLocation L)
    : … { … }

FloatingLiteral::FloatingLiteral(const ASTContext &C, EmptyShell Empty)
  : … { … }

FloatingLiteral *
FloatingLiteral::Create(const ASTContext &C, const llvm::APFloat &V,
                        bool isexact, QualType Type, SourceLocation L) { … }

FloatingLiteral *
FloatingLiteral::Create(const ASTContext &C, EmptyShell Empty) { … }

/// getValueAsApproximateDouble - This returns the value as an inaccurate
/// double.  Note that this may cause loss of precision, but is useful for
/// debugging dumps, etc.
double FloatingLiteral::getValueAsApproximateDouble() const { … }

unsigned StringLiteral::mapCharByteWidth(TargetInfo const &Target,
                                         StringLiteralKind SK) { … }

StringLiteral::StringLiteral(const ASTContext &Ctx, StringRef Str,
                             StringLiteralKind Kind, bool Pascal, QualType Ty,
                             const SourceLocation *Loc,
                             unsigned NumConcatenated)
    : … { … }

StringLiteral::StringLiteral(EmptyShell Empty, unsigned NumConcatenated,
                             unsigned Length, unsigned CharByteWidth)
    : … { … }

StringLiteral *StringLiteral::Create(const ASTContext &Ctx, StringRef Str,
                                     StringLiteralKind Kind, bool Pascal,
                                     QualType Ty, const SourceLocation *Loc,
                                     unsigned NumConcatenated) { … }

StringLiteral *StringLiteral::CreateEmpty(const ASTContext &Ctx,
                                          unsigned NumConcatenated,
                                          unsigned Length,
                                          unsigned CharByteWidth) { … }

void StringLiteral::outputString(raw_ostream &OS) const { … }

/// getLocationOfByte - Return a source location that points to the specified
/// byte of this string literal.
///
/// Strings are amazingly complex.  They can be formed from multiple tokens and
/// can have escape sequences in them in addition to the usual trigraph and
/// escaped newline business.  This routine handles this complexity.
///
/// The *StartToken sets the first token to be searched in this function and
/// the *StartTokenByteOffset is the byte offset of the first token. Before
/// returning, it updates the *StartToken to the TokNo of the token being found
/// and sets *StartTokenByteOffset to the byte offset of the token in the
/// string.
/// Using these two parameters can reduce the time complexity from O(n^2) to
/// O(n) if one wants to get the location of byte for all the tokens in a
/// string.
///
SourceLocation
StringLiteral::getLocationOfByte(unsigned ByteNo, const SourceManager &SM,
                                 const LangOptions &Features,
                                 const TargetInfo &Target, unsigned *StartToken,
                                 unsigned *StartTokenByteOffset) const { … }

/// getOpcodeStr - Turn an Opcode enum value into the punctuation char it
/// corresponds to, e.g. "sizeof" or "[pre]++".
StringRef UnaryOperator::getOpcodeStr(Opcode Op) { … }

UnaryOperatorKind
UnaryOperator::getOverloadedOpcode(OverloadedOperatorKind OO, bool Postfix) { … }

OverloadedOperatorKind UnaryOperator::getOverloadedOperator(Opcode Opc) { … }


//===----------------------------------------------------------------------===//
// Postfix Operators.
//===----------------------------------------------------------------------===//

CallExpr::CallExpr(StmtClass SC, Expr *Fn, ArrayRef<Expr *> PreArgs,
                   ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK,
                   SourceLocation RParenLoc, FPOptionsOverride FPFeatures,
                   unsigned MinNumArgs, ADLCallKind UsesADL)
    : … { … }

CallExpr::CallExpr(StmtClass SC, unsigned NumPreArgs, unsigned NumArgs,
                   bool HasFPFeatures, EmptyShell Empty)
    : … { … }

CallExpr *CallExpr::Create(const ASTContext &Ctx, Expr *Fn,
                           ArrayRef<Expr *> Args, QualType Ty, ExprValueKind VK,
                           SourceLocation RParenLoc,
                           FPOptionsOverride FPFeatures, unsigned MinNumArgs,
                           ADLCallKind UsesADL) { … }

CallExpr *CallExpr::CreateTemporary(void *Mem, Expr *Fn, QualType Ty,
                                    ExprValueKind VK, SourceLocation RParenLoc,
                                    ADLCallKind UsesADL) { … }

CallExpr *CallExpr::CreateEmpty(const ASTContext &Ctx, unsigned NumArgs,
                                bool HasFPFeatures, EmptyShell Empty) { … }

unsigned CallExpr::offsetToTrailingObjects(StmtClass SC) { … }

Decl *Expr::getReferencedDeclOfCallee() { … }

/// If this is a call to a builtin, return the builtin ID. If not, return 0.
unsigned CallExpr::getBuiltinCallee() const { … }

bool CallExpr::isUnevaluatedBuiltinCall(const ASTContext &Ctx) const { … }

QualType CallExpr::getCallReturnType(const ASTContext &Ctx) const { … }

const Attr *CallExpr::getUnusedResultAttr(const ASTContext &Ctx) const { … }

SourceLocation CallExpr::getBeginLoc() const { … }
SourceLocation CallExpr::getEndLoc() const { … }

OffsetOfExpr *OffsetOfExpr::Create(const ASTContext &C, QualType type,
                                   SourceLocation OperatorLoc,
                                   TypeSourceInfo *tsi,
                                   ArrayRef<OffsetOfNode> comps,
                                   ArrayRef<Expr*> exprs,
                                   SourceLocation RParenLoc) { … }

OffsetOfExpr *OffsetOfExpr::CreateEmpty(const ASTContext &C,
                                        unsigned numComps, unsigned numExprs) { … }

OffsetOfExpr::OffsetOfExpr(const ASTContext &C, QualType type,
                           SourceLocation OperatorLoc, TypeSourceInfo *tsi,
                           ArrayRef<OffsetOfNode> comps, ArrayRef<Expr *> exprs,
                           SourceLocation RParenLoc)
    : … { … }

IdentifierInfo *OffsetOfNode::getFieldName() const { … }

UnaryExprOrTypeTraitExpr::UnaryExprOrTypeTraitExpr(
    UnaryExprOrTypeTrait ExprKind, Expr *E, QualType resultType,
    SourceLocation op, SourceLocation rp)
    : … { … }

MemberExpr::MemberExpr(Expr *Base, bool IsArrow, SourceLocation OperatorLoc,
                       NestedNameSpecifierLoc QualifierLoc,
                       SourceLocation TemplateKWLoc, ValueDecl *MemberDecl,
                       DeclAccessPair FoundDecl,
                       const DeclarationNameInfo &NameInfo,
                       const TemplateArgumentListInfo *TemplateArgs, QualType T,
                       ExprValueKind VK, ExprObjectKind OK,
                       NonOdrUseReason NOUR)
    : … { … }

MemberExpr *MemberExpr::Create(
    const ASTContext &C, Expr *Base, bool IsArrow, SourceLocation OperatorLoc,
    NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc,
    ValueDecl *MemberDecl, DeclAccessPair FoundDecl,
    DeclarationNameInfo NameInfo, const TemplateArgumentListInfo *TemplateArgs,
    QualType T, ExprValueKind VK, ExprObjectKind OK, NonOdrUseReason NOUR) { … }

MemberExpr *MemberExpr::CreateEmpty(const ASTContext &Context,
                                    bool HasQualifier, bool HasFoundDecl,
                                    bool HasTemplateKWAndArgsInfo,
                                    unsigned NumTemplateArgs) { … }

void MemberExpr::setMemberDecl(ValueDecl *NewD) { … }

SourceLocation MemberExpr::getBeginLoc() const { … }
SourceLocation MemberExpr::getEndLoc() const { … }

bool CastExpr::CastConsistency() const { … }

const char *CastExpr::getCastKindName(CastKind CK) { … }

namespace {
// Skip over implicit nodes produced as part of semantic analysis.
// Designed for use with IgnoreExprNodes.
static Expr *ignoreImplicitSemaNodes(Expr *E) { … }
} // namespace

Expr *CastExpr::getSubExprAsWritten() { … }

NamedDecl *CastExpr::getConversionFunction() const { … }

CXXBaseSpecifier **CastExpr::path_buffer() { … }

const FieldDecl *CastExpr::getTargetFieldForToUnionCast(QualType unionType,
                                                        QualType opType) { … }

const FieldDecl *CastExpr::getTargetFieldForToUnionCast(const RecordDecl *RD,
                                                        QualType OpType) { … }

FPOptionsOverride *CastExpr::getTrailingFPFeatures() { … }

ImplicitCastExpr *ImplicitCastExpr::Create(const ASTContext &C, QualType T,
                                           CastKind Kind, Expr *Operand,
                                           const CXXCastPath *BasePath,
                                           ExprValueKind VK,
                                           FPOptionsOverride FPO) { … }

ImplicitCastExpr *ImplicitCastExpr::CreateEmpty(const ASTContext &C,
                                                unsigned PathSize,
                                                bool HasFPFeatures) { … }

CStyleCastExpr *CStyleCastExpr::Create(const ASTContext &C, QualType T,
                                       ExprValueKind VK, CastKind K, Expr *Op,
                                       const CXXCastPath *BasePath,
                                       FPOptionsOverride FPO,
                                       TypeSourceInfo *WrittenTy,
                                       SourceLocation L, SourceLocation R) { … }

CStyleCastExpr *CStyleCastExpr::CreateEmpty(const ASTContext &C,
                                            unsigned PathSize,
                                            bool HasFPFeatures) { … }

/// getOpcodeStr - Turn an Opcode enum value into the punctuation char it
/// corresponds to, e.g. "<<=".
StringRef BinaryOperator::getOpcodeStr(Opcode Op) { … }

BinaryOperatorKind
BinaryOperator::getOverloadedOpcode(OverloadedOperatorKind OO) { … }

OverloadedOperatorKind BinaryOperator::getOverloadedOperator(Opcode Opc) { … }

bool BinaryOperator::isNullPointerArithmeticExtension(ASTContext &Ctx,
                                                      Opcode Opc,
                                                      const Expr *LHS,
                                                      const Expr *RHS) { … }

SourceLocExpr::SourceLocExpr(const ASTContext &Ctx, SourceLocIdentKind Kind,
                             QualType ResultTy, SourceLocation BLoc,
                             SourceLocation RParenLoc,
                             DeclContext *ParentContext)
    : … { … }

StringRef SourceLocExpr::getBuiltinStr() const { … }

APValue SourceLocExpr::EvaluateInContext(const ASTContext &Ctx,
                                         const Expr *DefaultExpr) const { … }

EmbedExpr::EmbedExpr(const ASTContext &Ctx, SourceLocation Loc,
                     EmbedDataStorage *Data, unsigned Begin,
                     unsigned NumOfElements)
    : … { … }

InitListExpr::InitListExpr(const ASTContext &C, SourceLocation lbraceloc,
                           ArrayRef<Expr *> initExprs, SourceLocation rbraceloc)
    : … { … }

void InitListExpr::reserveInits(const ASTContext &C, unsigned NumInits) { … }

void InitListExpr::resizeInits(const ASTContext &C, unsigned NumInits) { … }

Expr *InitListExpr::updateInit(const ASTContext &C, unsigned Init, Expr *expr) { … }

void InitListExpr::setArrayFiller(Expr *filler) { … }

bool InitListExpr::isStringLiteralInit() const { … }

bool InitListExpr::isTransparent() const { … }

bool InitListExpr::isIdiomaticZeroInitializer(const LangOptions &LangOpts) const { … }

SourceLocation InitListExpr::getBeginLoc() const { … }

SourceLocation InitListExpr::getEndLoc() const { … }

/// getFunctionType - Return the underlying function type for this block.
///
const FunctionProtoType *BlockExpr::getFunctionType() const { … }

SourceLocation BlockExpr::getCaretLocation() const { … }
const Stmt *BlockExpr::getBody() const { … }
Stmt *BlockExpr::getBody() { … }


//===----------------------------------------------------------------------===//
// Generic Expression Routines
//===----------------------------------------------------------------------===//

bool Expr::isReadIfDiscardedInCPlusPlus11() const { … }

/// isUnusedResultAWarning - Return true if this immediate expression should
/// be warned about if the result is unused.  If so, fill in Loc and Ranges
/// with location to warn on and the source range[s] to report with the
/// warning.
bool Expr::isUnusedResultAWarning(const Expr *&WarnE, SourceLocation &Loc,
                                  SourceRange &R1, SourceRange &R2,
                                  ASTContext &Ctx) const { … }

/// isOBJCGCCandidate - Check if an expression is objc gc'able.
/// returns true, if it is; false otherwise.
bool Expr::isOBJCGCCandidate(ASTContext &Ctx) const { … }

bool Expr::isBoundMemberFunction(ASTContext &Ctx) const { … }

QualType Expr::findBoundMemberType(const Expr *expr) { … }

Expr *Expr::IgnoreImpCasts() { … }

Expr *Expr::IgnoreCasts() { … }

Expr *Expr::IgnoreImplicit() { … }

Expr *Expr::IgnoreImplicitAsWritten() { … }

Expr *Expr::IgnoreParens() { … }

Expr *Expr::IgnoreParenImpCasts() { … }

Expr *Expr::IgnoreParenCasts() { … }

Expr *Expr::IgnoreConversionOperatorSingleStep() { … }

Expr *Expr::IgnoreParenLValueCasts() { … }

Expr *Expr::IgnoreParenBaseCasts() { … }

Expr *Expr::IgnoreParenNoopCasts(const ASTContext &Ctx) { … }

Expr *Expr::IgnoreUnlessSpelledInSource() { … }

bool Expr::isDefaultArgument() const { … }

/// Skip over any no-op casts and any temporary-binding
/// expressions.
static const Expr *skipTemporaryBindingsNoOpCastsAndParens(const Expr *E) { … }

/// isTemporaryObject - Determines if this expression produces a
/// temporary of the given class type.
bool Expr::isTemporaryObject(ASTContext &C, const CXXRecordDecl *TempTy) const { … }

bool Expr::isImplicitCXXThis() const { … }

/// hasAnyTypeDependentArguments - Determines if any of the expressions
/// in Exprs is type-dependent.
bool Expr::hasAnyTypeDependentArguments(ArrayRef<Expr *> Exprs) { … }

bool Expr::isConstantInitializer(ASTContext &Ctx, bool IsForRef,
                                 const Expr **Culprit) const { … }

bool CallExpr::isBuiltinAssumeFalse(const ASTContext &Ctx) const { … }

bool CallExpr::isCallToStdMove() const { … }

namespace {
  /// Look for any side effects within a Stmt.
  class SideEffectFinder : public ConstEvaluatedExprVisitor<SideEffectFinder> { … };
}

bool Expr::HasSideEffects(const ASTContext &Ctx,
                          bool IncludePossibleEffects) const { … }

FPOptions Expr::getFPFeaturesInEffect(const LangOptions &LO) const { … }

namespace {
  /// Look for a call to a non-trivial function within an expression.
  class NonTrivialCallFinder : public ConstEvaluatedExprVisitor<NonTrivialCallFinder>
  { … };
}

bool Expr::hasNonTrivialCall(const ASTContext &Ctx) const { … }

/// isNullPointerConstant - C99 6.3.2.3p3 - Return whether this is a null
/// pointer constant or not, as well as the specific kind of constant detected.
/// Null pointer constants can be integer constant expressions with the
/// value zero, casts of zero to void*, nullptr (C++0X), or __null
/// (a GNU extension).
Expr::NullPointerConstantKind
Expr::isNullPointerConstant(ASTContext &Ctx,
                            NullPointerConstantValueDependence NPC) const { … }

/// If this expression is an l-value for an Objective C
/// property, find the underlying property reference expression.
const ObjCPropertyRefExpr *Expr::getObjCProperty() const { … }

bool Expr::isObjCSelfExpr() const { … }

FieldDecl *Expr::getSourceBitField() { … }

EnumConstantDecl *Expr::getEnumConstantDecl() { … }

bool Expr::refersToVectorElement() const { … }

bool Expr::refersToGlobalRegisterVar() const { … }

bool Expr::isSameComparisonOperand(const Expr* E1, const Expr* E2) { … }

/// isArrow - Return true if the base expression is a pointer to vector,
/// return false if the base expression is a vector.
bool ExtVectorElementExpr::isArrow() const { … }

unsigned ExtVectorElementExpr::getNumElements() const { … }

/// containsDuplicateElements - Return true if any element access is repeated.
bool ExtVectorElementExpr::containsDuplicateElements() const { … }

/// getEncodedElementAccess - We encode the fields as a llvm ConstantArray.
void ExtVectorElementExpr::getEncodedElementAccess(
    SmallVectorImpl<uint32_t> &Elts) const { … }

ShuffleVectorExpr::ShuffleVectorExpr(const ASTContext &C, ArrayRef<Expr *> args,
                                     QualType Type, SourceLocation BLoc,
                                     SourceLocation RP)
    : … { … }

void ShuffleVectorExpr::setExprs(const ASTContext &C, ArrayRef<Expr *> Exprs) { … }

GenericSelectionExpr::GenericSelectionExpr(
    const ASTContext &, SourceLocation GenericLoc, Expr *ControllingExpr,
    ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs,
    SourceLocation DefaultLoc, SourceLocation RParenLoc,
    bool ContainsUnexpandedParameterPack, unsigned ResultIndex)
    : … { … }

GenericSelectionExpr::GenericSelectionExpr(
    const ASTContext &, SourceLocation GenericLoc,
    TypeSourceInfo *ControllingType, ArrayRef<TypeSourceInfo *> AssocTypes,
    ArrayRef<Expr *> AssocExprs, SourceLocation DefaultLoc,
    SourceLocation RParenLoc, bool ContainsUnexpandedParameterPack,
    unsigned ResultIndex)
    : … { … }

GenericSelectionExpr::GenericSelectionExpr(
    const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr,
    ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs,
    SourceLocation DefaultLoc, SourceLocation RParenLoc,
    bool ContainsUnexpandedParameterPack)
    : … { … }

GenericSelectionExpr::GenericSelectionExpr(
    const ASTContext &Context, SourceLocation GenericLoc,
    TypeSourceInfo *ControllingType, ArrayRef<TypeSourceInfo *> AssocTypes,
    ArrayRef<Expr *> AssocExprs, SourceLocation DefaultLoc,
    SourceLocation RParenLoc, bool ContainsUnexpandedParameterPack)
    : … { … }

GenericSelectionExpr::GenericSelectionExpr(EmptyShell Empty, unsigned NumAssocs)
    : … { … }

GenericSelectionExpr *GenericSelectionExpr::Create(
    const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr,
    ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs,
    SourceLocation DefaultLoc, SourceLocation RParenLoc,
    bool ContainsUnexpandedParameterPack, unsigned ResultIndex) { … }

GenericSelectionExpr *GenericSelectionExpr::Create(
    const ASTContext &Context, SourceLocation GenericLoc, Expr *ControllingExpr,
    ArrayRef<TypeSourceInfo *> AssocTypes, ArrayRef<Expr *> AssocExprs,
    SourceLocation DefaultLoc, SourceLocation RParenLoc,
    bool ContainsUnexpandedParameterPack) { … }

GenericSelectionExpr *GenericSelectionExpr::Create(
    const ASTContext &Context, SourceLocation GenericLoc,
    TypeSourceInfo *ControllingType, ArrayRef<TypeSourceInfo *> AssocTypes,
    ArrayRef<Expr *> AssocExprs, SourceLocation DefaultLoc,
    SourceLocation RParenLoc, bool ContainsUnexpandedParameterPack,
    unsigned ResultIndex) { … }

GenericSelectionExpr *GenericSelectionExpr::Create(
    const ASTContext &Context, SourceLocation GenericLoc,
    TypeSourceInfo *ControllingType, ArrayRef<TypeSourceInfo *> AssocTypes,
    ArrayRef<Expr *> AssocExprs, SourceLocation DefaultLoc,
    SourceLocation RParenLoc, bool ContainsUnexpandedParameterPack) { … }

GenericSelectionExpr *
GenericSelectionExpr::CreateEmpty(const ASTContext &Context,
                                  unsigned NumAssocs) { … }

//===----------------------------------------------------------------------===//
//  DesignatedInitExpr
//===----------------------------------------------------------------------===//

const IdentifierInfo *DesignatedInitExpr::Designator::getFieldName() const { … }

DesignatedInitExpr::DesignatedInitExpr(const ASTContext &C, QualType Ty,
                                       llvm::ArrayRef<Designator> Designators,
                                       SourceLocation EqualOrColonLoc,
                                       bool GNUSyntax,
                                       ArrayRef<Expr *> IndexExprs, Expr *Init)
    : … { … }

DesignatedInitExpr *
DesignatedInitExpr::Create(const ASTContext &C,
                           llvm::ArrayRef<Designator> Designators,
                           ArrayRef<Expr*> IndexExprs,
                           SourceLocation ColonOrEqualLoc,
                           bool UsesColonSyntax, Expr *Init) { … }

DesignatedInitExpr *DesignatedInitExpr::CreateEmpty(const ASTContext &C,
                                                    unsigned NumIndexExprs) { … }

void DesignatedInitExpr::setDesignators(const ASTContext &C,
                                        const Designator *Desigs,
                                        unsigned NumDesigs) { … }

SourceRange DesignatedInitExpr::getDesignatorsSourceRange() const { … }

SourceLocation DesignatedInitExpr::getBeginLoc() const { … }

SourceLocation DesignatedInitExpr::getEndLoc() const { … }

Expr *DesignatedInitExpr::getArrayIndex(const Designator& D) const { … }

Expr *DesignatedInitExpr::getArrayRangeStart(const Designator &D) const { … }

Expr *DesignatedInitExpr::getArrayRangeEnd(const Designator &D) const { … }

/// Replaces the designator at index @p Idx with the series
/// of designators in [First, Last).
void DesignatedInitExpr::ExpandDesignator(const ASTContext &C, unsigned Idx,
                                          const Designator *First,
                                          const Designator *Last) { … }

DesignatedInitUpdateExpr::DesignatedInitUpdateExpr(const ASTContext &C,
                                                   SourceLocation lBraceLoc,
                                                   Expr *baseExpr,
                                                   SourceLocation rBraceLoc)
    : … { … }

SourceLocation DesignatedInitUpdateExpr::getBeginLoc() const { … }

SourceLocation DesignatedInitUpdateExpr::getEndLoc() const { … }

ParenListExpr::ParenListExpr(SourceLocation LParenLoc, ArrayRef<Expr *> Exprs,
                             SourceLocation RParenLoc)
    : … { … }

ParenListExpr::ParenListExpr(EmptyShell Empty, unsigned NumExprs)
    : … { … }

ParenListExpr *ParenListExpr::Create(const ASTContext &Ctx,
                                     SourceLocation LParenLoc,
                                     ArrayRef<Expr *> Exprs,
                                     SourceLocation RParenLoc) { … }

ParenListExpr *ParenListExpr::CreateEmpty(const ASTContext &Ctx,
                                          unsigned NumExprs) { … }

/// Certain overflow-dependent code patterns can have their integer overflow
/// sanitization disabled. Check for the common pattern `if (a + b < a)` and
/// return the resulting BinaryOperator responsible for the addition so we can
/// elide overflow checks during codegen.
static std::optional<BinaryOperator *>
getOverflowPatternBinOp(const BinaryOperator *E) { … }

/// Compute and set the OverflowPatternExclusion bit based on whether the
/// BinaryOperator expression matches an overflow pattern being ignored by
/// -fsanitize-undefined-ignore-overflow-pattern=add-signed-overflow-test or
/// -fsanitize-undefined-ignore-overflow-pattern=add-unsigned-overflow-test
static void computeOverflowPatternExclusion(const ASTContext &Ctx,
                                            const BinaryOperator *E) { … }

BinaryOperator::BinaryOperator(const ASTContext &Ctx, Expr *lhs, Expr *rhs,
                               Opcode opc, QualType ResTy, ExprValueKind VK,
                               ExprObjectKind OK, SourceLocation opLoc,
                               FPOptionsOverride FPFeatures)
    : … { … }

BinaryOperator::BinaryOperator(const ASTContext &Ctx, Expr *lhs, Expr *rhs,
                               Opcode opc, QualType ResTy, ExprValueKind VK,
                               ExprObjectKind OK, SourceLocation opLoc,
                               FPOptionsOverride FPFeatures, bool dead2)
    : … { … }

BinaryOperator *BinaryOperator::CreateEmpty(const ASTContext &C,
                                            bool HasFPFeatures) { … }

BinaryOperator *BinaryOperator::Create(const ASTContext &C, Expr *lhs,
                                       Expr *rhs, Opcode opc, QualType ResTy,
                                       ExprValueKind VK, ExprObjectKind OK,
                                       SourceLocation opLoc,
                                       FPOptionsOverride FPFeatures) { … }

CompoundAssignOperator *
CompoundAssignOperator::CreateEmpty(const ASTContext &C, bool HasFPFeatures) { … }

CompoundAssignOperator *
CompoundAssignOperator::Create(const ASTContext &C, Expr *lhs, Expr *rhs,
                               Opcode opc, QualType ResTy, ExprValueKind VK,
                               ExprObjectKind OK, SourceLocation opLoc,
                               FPOptionsOverride FPFeatures,
                               QualType CompLHSType, QualType CompResultType) { … }

UnaryOperator *UnaryOperator::CreateEmpty(const ASTContext &C,
                                          bool hasFPFeatures) { … }

UnaryOperator::UnaryOperator(const ASTContext &Ctx, Expr *input, Opcode opc,
                             QualType type, ExprValueKind VK, ExprObjectKind OK,
                             SourceLocation l, bool CanOverflow,
                             FPOptionsOverride FPFeatures)
    : … { … }

UnaryOperator *UnaryOperator::Create(const ASTContext &C, Expr *input,
                                     Opcode opc, QualType type,
                                     ExprValueKind VK, ExprObjectKind OK,
                                     SourceLocation l, bool CanOverflow,
                                     FPOptionsOverride FPFeatures) { … }

const OpaqueValueExpr *OpaqueValueExpr::findInCopyConstruct(const Expr *e) { … }

PseudoObjectExpr *PseudoObjectExpr::Create(const ASTContext &Context,
                                           EmptyShell sh,
                                           unsigned numSemanticExprs) { … }

PseudoObjectExpr::PseudoObjectExpr(EmptyShell shell, unsigned numSemanticExprs)
  : … { … }

PseudoObjectExpr *PseudoObjectExpr::Create(const ASTContext &C, Expr *syntax,
                                           ArrayRef<Expr*> semantics,
                                           unsigned resultIndex) { … }

PseudoObjectExpr::PseudoObjectExpr(QualType type, ExprValueKind VK,
                                   Expr *syntax, ArrayRef<Expr *> semantics,
                                   unsigned resultIndex)
    : … { … }

//===----------------------------------------------------------------------===//
//  Child Iterators for iterating over subexpressions/substatements
//===----------------------------------------------------------------------===//

// UnaryExprOrTypeTraitExpr
Stmt::child_range UnaryExprOrTypeTraitExpr::children() { … }

Stmt::const_child_range UnaryExprOrTypeTraitExpr::children() const { … }

AtomicExpr::AtomicExpr(SourceLocation BLoc, ArrayRef<Expr *> args, QualType t,
                       AtomicOp op, SourceLocation RP)
    : … { … }

unsigned AtomicExpr::getNumSubExprs(AtomicOp Op) { … }

QualType AtomicExpr::getValueType() const { … }

QualType ArraySectionExpr::getBaseOriginalType(const Expr *Base) { … }

RecoveryExpr::RecoveryExpr(ASTContext &Ctx, QualType T, SourceLocation BeginLoc,
                           SourceLocation EndLoc, ArrayRef<Expr *> SubExprs)
    : … { … }

RecoveryExpr *RecoveryExpr::Create(ASTContext &Ctx, QualType T,
                                   SourceLocation BeginLoc,
                                   SourceLocation EndLoc,
                                   ArrayRef<Expr *> SubExprs) { … }

RecoveryExpr *RecoveryExpr::CreateEmpty(ASTContext &Ctx, unsigned NumSubExprs) { … }

void OMPArrayShapingExpr::setDimensions(ArrayRef<Expr *> Dims) { … }

void OMPArrayShapingExpr::setBracketsRanges(ArrayRef<SourceRange> BR) { … }

OMPArrayShapingExpr::OMPArrayShapingExpr(QualType ExprTy, Expr *Op,
                                         SourceLocation L, SourceLocation R,
                                         ArrayRef<Expr *> Dims)
    : … { … }

OMPArrayShapingExpr *
OMPArrayShapingExpr::Create(const ASTContext &Context, QualType T, Expr *Op,
                            SourceLocation L, SourceLocation R,
                            ArrayRef<Expr *> Dims,
                            ArrayRef<SourceRange> BracketRanges) { … }

OMPArrayShapingExpr *OMPArrayShapingExpr::CreateEmpty(const ASTContext &Context,
                                                      unsigned NumDims) { … }

void OMPIteratorExpr::setIteratorDeclaration(unsigned I, Decl *D) { … }

void OMPIteratorExpr::setAssignmentLoc(unsigned I, SourceLocation Loc) { … }

void OMPIteratorExpr::setIteratorRange(unsigned I, Expr *Begin,
                                       SourceLocation ColonLoc, Expr *End,
                                       SourceLocation SecondColonLoc,
                                       Expr *Step) { … }

Decl *OMPIteratorExpr::getIteratorDecl(unsigned I) { … }

OMPIteratorExpr::IteratorRange OMPIteratorExpr::getIteratorRange(unsigned I) { … }

SourceLocation OMPIteratorExpr::getAssignLoc(unsigned I) const { … }

SourceLocation OMPIteratorExpr::getColonLoc(unsigned I) const { … }

SourceLocation OMPIteratorExpr::getSecondColonLoc(unsigned I) const { … }

void OMPIteratorExpr::setHelper(unsigned I, const OMPIteratorHelperData &D) { … }

OMPIteratorHelperData &OMPIteratorExpr::getHelper(unsigned I) { … }

const OMPIteratorHelperData &OMPIteratorExpr::getHelper(unsigned I) const { … }

OMPIteratorExpr::OMPIteratorExpr(
    QualType ExprTy, SourceLocation IteratorKwLoc, SourceLocation L,
    SourceLocation R, ArrayRef<OMPIteratorExpr::IteratorDefinition> Data,
    ArrayRef<OMPIteratorHelperData> Helpers)
    : … { … }

OMPIteratorExpr *
OMPIteratorExpr::Create(const ASTContext &Context, QualType T,
                        SourceLocation IteratorKwLoc, SourceLocation L,
                        SourceLocation R,
                        ArrayRef<OMPIteratorExpr::IteratorDefinition> Data,
                        ArrayRef<OMPIteratorHelperData> Helpers) { … }

OMPIteratorExpr *OMPIteratorExpr::CreateEmpty(const ASTContext &Context,
                                              unsigned NumIterators) { … }

HLSLOutArgExpr *HLSLOutArgExpr::Create(const ASTContext &C, QualType Ty,
                                       OpaqueValueExpr *Base,
                                       OpaqueValueExpr *OpV, Expr *WB,
                                       bool IsInOut) { … }

HLSLOutArgExpr *HLSLOutArgExpr::CreateEmpty(const ASTContext &C) { … }

OpenACCAsteriskSizeExpr *OpenACCAsteriskSizeExpr::Create(const ASTContext &C,
                                                         SourceLocation Loc) { … }

OpenACCAsteriskSizeExpr *
OpenACCAsteriskSizeExpr::CreateEmpty(const ASTContext &C) { … }