#include <Expr.h>

Inherits clang::Stmt.

Inherited by clang::AbstractConditionalOperator, clang::AddrLabelExpr, clang::ArraySubscriptExpr, clang::ArrayTypeTraitExpr, clang::AsTypeExpr, clang::AtomicExpr, clang::BinaryOperator, clang::BlockExpr, clang::CallExpr, clang::CastExpr, clang::CharacterLiteral, clang::ChooseExpr, clang::CompoundLiteralExpr, clang::ConvertVectorExpr, clang::CXXBindTemporaryExpr, clang::CXXBoolLiteralExpr, clang::CXXConstructExpr, clang::CXXDefaultArgExpr, clang::CXXDefaultInitExpr, clang::CXXDeleteExpr, clang::CXXDependentScopeMemberExpr, clang::CXXFoldExpr, clang::CXXNewExpr, clang::CXXNoexceptExpr, clang::CXXNullPtrLiteralExpr, clang::CXXPseudoDestructorExpr, clang::CXXScalarValueInitExpr, clang::CXXStdInitializerListExpr, clang::CXXThisExpr, clang::CXXThrowExpr, clang::CXXTypeidExpr, clang::CXXUnresolvedConstructExpr, clang::CXXUuidofExpr, clang::DeclRefExpr, clang::DependentScopeDeclRefExpr, clang::DesignatedInitExpr, clang::ExpressionTraitExpr, clang::ExprWithCleanups, clang::ExtVectorElementExpr, clang::FloatingLiteral, clang::FunctionParmPackExpr, clang::GenericSelectionExpr, clang::GNUNullExpr, clang::ImaginaryLiteral, clang::ImplicitValueInitExpr, clang::InitListExpr, clang::IntegerLiteral, clang::LambdaExpr, clang::MaterializeTemporaryExpr, clang::MemberExpr, clang::MSPropertyRefExpr, clang::ObjCArrayLiteral, clang::ObjCBoolLiteralExpr, clang::ObjCBoxedExpr, clang::ObjCDictionaryLiteral, clang::ObjCEncodeExpr, clang::ObjCIndirectCopyRestoreExpr, clang::ObjCIsaExpr, clang::ObjCIvarRefExpr, clang::ObjCMessageExpr, clang::ObjCPropertyRefExpr, clang::ObjCProtocolExpr, clang::ObjCSelectorExpr, clang::ObjCStringLiteral, clang::ObjCSubscriptRefExpr, clang::OffsetOfExpr, clang::OpaqueValueExpr, clang::OverloadExpr, clang::PackExpansionExpr, clang::ParenExpr, clang::ParenListExpr, clang::PredefinedExpr, clang::PseudoObjectExpr, clang::ShuffleVectorExpr, clang::SizeOfPackExpr, clang::StmtExpr, clang::StringLiteral, clang::SubstNonTypeTemplateParmExpr, clang::SubstNonTypeTemplateParmPackExpr, clang::TypeTraitExpr, clang::TypoExpr, clang::UnaryExprOrTypeTraitExpr, clang::UnaryOperator, and clang::VAArgExpr.

Collaboration diagram for clang::Expr:

[legend]

List of all members.

Classes
class	Classification
	The return type of classify(). Represents the C++11 expression taxonomy. More...
struct	EvalResult
	EvalResult is a struct with detailed info about an evaluated expression. More...
struct	EvalStatus
	EvalStatus is a struct with detailed info about an evaluation in progress. More...
Public Types
enum	LValueClassification { LV_Valid, LV_NotObjectType, LV_IncompleteVoidType, LV_DuplicateVectorComponents, LV_InvalidExpression, LV_InvalidMessageExpression, LV_MemberFunction, LV_SubObjCPropertySetting, LV_ClassTemporary, LV_ArrayTemporary }
enum	isModifiableLvalueResult { MLV_Valid, MLV_NotObjectType, MLV_IncompleteVoidType, MLV_DuplicateVectorComponents, MLV_InvalidExpression, MLV_LValueCast, MLV_IncompleteType, MLV_ConstQualified, MLV_ArrayType, MLV_NoSetterProperty, MLV_MemberFunction, MLV_SubObjCPropertySetting, MLV_InvalidMessageExpression, MLV_ClassTemporary, MLV_ArrayTemporary }
enum	SideEffectsKind { SE_NoSideEffects, SE_AllowSideEffects }
enum	NullPointerConstantKind { NPCK_NotNull = 0, NPCK_ZeroExpression, NPCK_ZeroLiteral, NPCK_CXX11_nullptr, NPCK_GNUNull }
	Enumeration used to describe the kind of Null pointer constant returned from `isNullPointerConstant()`. More...
enum	NullPointerConstantValueDependence { NPC_NeverValueDependent = 0, NPC_ValueDependentIsNull, NPC_ValueDependentIsNotNull }
	Enumeration used to describe how `isNullPointerConstant()` should cope with value-dependent expressions. More...
Public Member Functions
QualType	getType () const
void	setType (QualType t)
bool	isValueDependent () const
void	setValueDependent (bool VD)
	Set whether this expression is value-dependent or not.
bool	isTypeDependent () const
void	setTypeDependent (bool TD)
	Set whether this expression is type-dependent or not.
bool	isInstantiationDependent () const
	Whether this expression is instantiation-dependent, meaning that it depends in some way on a template parameter, even if neither its type nor (constant) value can change due to the template instantiation.
void	setInstantiationDependent (bool ID)
	Set whether this expression is instantiation-dependent or not.
bool	containsUnexpandedParameterPack () const
	Whether this expression contains an unexpanded parameter pack (for C++11 variadic templates).
void	setContainsUnexpandedParameterPack (bool PP=true)
	Set the bit that describes whether this expression contains an unexpanded parameter pack.
SourceLocation	getExprLoc () const LLVM_READONLY
bool	isUnusedResultAWarning (const Expr *&WarnExpr, SourceLocation &Loc, SourceRange &R1, SourceRange &R2, ASTContext &Ctx) 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	isLValue () const
bool	isRValue () const
bool	isXValue () const
bool	isGLValue () const
LValueClassification	ClassifyLValue (ASTContext &Ctx) const
	Reasons why an expression might not be an l-value.
isModifiableLvalueResult	isModifiableLvalue (ASTContext &Ctx, SourceLocation *Loc=nullptr) const
Classification	Classify (ASTContext &Ctx) const
	Classify - Classify this expression according to the C++11 expression taxonomy.
Classification	ClassifyModifiable (ASTContext &Ctx, SourceLocation &Loc) const
	ClassifyModifiable - Classify this expression according to the C++11 expression taxonomy, and see if it is valid on the left side of an assignment.
ExprValueKind	getValueKind () const
	getValueKind - The value kind that this expression produces.
ExprObjectKind	getObjectKind () const
bool	isOrdinaryOrBitFieldObject () const
void	setValueKind (ExprValueKind Cat)
	setValueKind - Set the value kind produced by this expression.
void	setObjectKind (ExprObjectKind Cat)
	setObjectKind - Set the object kind produced by this expression.
bool	refersToBitField () const
	Returns true if this expression is a gl-value that potentially refers to a bit-field.
FieldDecl *	getSourceBitField ()
	If this expression refers to a bit-field, retrieve the declaration of that bit-field.
const FieldDecl *	getSourceBitField () const
const ObjCPropertyRefExpr *	getObjCProperty () const
	If this expression is an l-value for an Objective C property, find the underlying property reference expression.
bool	isObjCSelfExpr () const
	Check if this expression is the ObjC 'self' implicit parameter.
bool	refersToVectorElement () const
	Returns whether this expression refers to a vector element.
bool	hasPlaceholderType () const
	Returns whether this expression has a placeholder type.
bool	hasPlaceholderType (BuiltinType::Kind K) const
	Returns whether this expression has a specific placeholder type.
bool	isKnownToHaveBooleanValue () const
bool	isIntegerConstantExpr (llvm::APSInt &Result, const ASTContext &Ctx, SourceLocation *Loc=nullptr, bool isEvaluated=true) const
bool	isIntegerConstantExpr (const ASTContext &Ctx, SourceLocation *Loc=nullptr) const
bool	isCXX98IntegralConstantExpr (const ASTContext &Ctx) const
bool	isCXX11ConstantExpr (const ASTContext &Ctx, APValue Result=nullptr, SourceLocation Loc=nullptr) const
bool	isConstantInitializer (ASTContext &Ctx, bool ForRef, const Expr **Culprit=nullptr) const
bool	EvaluateAsRValue (EvalResult &Result, const ASTContext &Ctx) const
	EvaluateAsRValue - Return true if this is a constant which we can fold using any crazy technique (that has nothing to do with language standards) that we want to. If this function returns true, it returns the folded constant in Result. If this expression is a glvalue, an lvalue-to-rvalue conversion will be applied to the result.
bool	EvaluateAsBooleanCondition (bool &Result, const ASTContext &Ctx) const
bool	EvaluateAsInt (llvm::APSInt &Result, const ASTContext &Ctx, SideEffectsKind AllowSideEffects=SE_NoSideEffects) const
bool	isEvaluatable (const ASTContext &Ctx) const
bool	HasSideEffects (const ASTContext &Ctx) const
bool	hasNonTrivialCall (ASTContext &Ctx)
	Determine whether this expression involves a call to any function that is not trivial.
llvm::APSInt	EvaluateKnownConstInt (const ASTContext &Ctx, SmallVectorImpl< PartialDiagnosticAt > *Diag=nullptr) const
void	EvaluateForOverflow (const ASTContext &Ctx) const
bool	EvaluateAsLValue (EvalResult &Result, const ASTContext &Ctx) const
bool	EvaluateAsInitializer (APValue &Result, const ASTContext &Ctx, const VarDecl *VD, SmallVectorImpl< PartialDiagnosticAt > &Notes) const
bool	EvaluateWithSubstitution (APValue &Value, ASTContext &Ctx, const FunctionDecl Callee, ArrayRef< const Expr > Args) const
NullPointerConstantKind	isNullPointerConstant (ASTContext &Ctx, NullPointerConstantValueDependence NPC) 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).
bool	isOBJCGCCandidate (ASTContext &Ctx) const
	isOBJCGCCandidate - Check if an expression is objc gc'able. returns true, if it is; false otherwise.
bool	isBoundMemberFunction (ASTContext &Ctx) const
	Returns true if this expression is a bound member function.
Expr *	IgnoreImpCasts () LLVM_READONLY
Expr *	IgnoreImplicit () LLVM_READONLY
const Expr *	IgnoreImplicit () const LLVM_READONLY
Expr *	IgnoreParens () LLVM_READONLY
Expr *	IgnoreParenCasts () LLVM_READONLY
	IgnoreParenCasts - Ignore parentheses and casts. Strip off any ParenExpr or CastExprs or ImplicitCastExprs, returning their operand.
Expr *	IgnoreCasts () LLVM_READONLY
	Ignore casts. Strip off any CastExprs, returning their operand.
Expr *	IgnoreParenImpCasts () LLVM_READONLY
Expr *	IgnoreConversionOperator () LLVM_READONLY
const Expr *	IgnoreConversionOperator () const LLVM_READONLY
const Expr *	IgnoreParenImpCasts () const LLVM_READONLY
Expr *	IgnoreParenLValueCasts () LLVM_READONLY
	IgnoreParenLValueCasts - Ignore parentheses and lvalue-to-rvalue casts. This is intended purely as a temporary workaround for code that hasn't yet been rewritten to do the right thing about those casts, and may disappear along with the last internal use.
const Expr *	IgnoreParenLValueCasts () const LLVM_READONLY
Expr *	IgnoreParenNoopCasts (ASTContext &Ctx) LLVM_READONLY
Expr *	ignoreParenBaseCasts () LLVM_READONLY
	Ignore parentheses and derived-to-base casts.
const Expr *	ignoreParenBaseCasts () const LLVM_READONLY
bool	isDefaultArgument () const
	Determine whether this expression is a default function argument.
bool	isTemporaryObject (ASTContext &Ctx, const CXXRecordDecl *TempTy) const
	Determine whether the result of this expression is a temporary object of the given class type.
bool	isImplicitCXXThis () const
	Whether this expression is an implicit reference to 'this' in C++.
const Expr *	IgnoreImpCasts () const LLVM_READONLY
const Expr *	IgnoreParens () const LLVM_READONLY
const Expr *	IgnoreParenCasts () const LLVM_READONLY
const Expr *	IgnoreCasts () const LLVM_READONLY
	Strip off casts, but keep parentheses.
const Expr *	IgnoreParenNoopCasts (ASTContext &Ctx) const LLVM_READONLY
const CXXRecordDecl *	getBestDynamicClassType () const
	For an expression of class type or pointer to class type, return the most derived class decl the expression is known to refer to.
const Expr *	skipRValueSubobjectAdjustments (SmallVectorImpl< const Expr * > &CommaLHS, SmallVectorImpl< SubobjectAdjustment > &Adjustments) const
Static Public Member Functions
static ExprValueKind	getValueKindForType (QualType T)
static bool	isPotentialConstantExpr (const FunctionDecl *FD, SmallVectorImpl< PartialDiagnosticAt > &Diags)
static bool	isPotentialConstantExprUnevaluated (Expr E, const FunctionDecl FD, SmallVectorImpl< PartialDiagnosticAt > &Diags)
static QualType	findBoundMemberType (const Expr *expr)
	Given an expression of bound-member type, find the type of the member. Returns null if this is an overloaded bound member expression.
static bool	hasAnyTypeDependentArguments (ArrayRef< Expr * > Exprs)
	hasAnyTypeDependentArguments - Determines if any of the expressions in Exprs is type-dependent.
static bool	classof (const Stmt *T)
Protected Member Functions
	Expr (StmtClass SC, QualType T, ExprValueKind VK, ExprObjectKind OK, bool TD, bool VD, bool ID, bool ContainsUnexpandedParameterPack)
	Expr (StmtClass SC, EmptyShell)
	Construct an empty expression.

Detailed Description

Expr - This represents one expression. Note that Expr's are subclasses of Stmt. This allows an expression to be transparently used any place a Stmt is required.

Definition at line 104 of file Expr.h.

Member Enumeration Documentation

enum clang::Expr::isModifiableLvalueResult

Enumerator:

MLV_Valid
MLV_NotObjectType
MLV_IncompleteVoidType
MLV_DuplicateVectorComponents
MLV_InvalidExpression
MLV_LValueCast
MLV_IncompleteType
MLV_ConstQualified
MLV_ArrayType
MLV_NoSetterProperty
MLV_MemberFunction
MLV_SubObjCPropertySetting
MLV_InvalidMessageExpression
MLV_ClassTemporary
MLV_ArrayTemporary

Definition at line 270 of file Expr.h.

enum clang::Expr::LValueClassification

Enumerator:

LV_Valid
LV_NotObjectType
LV_IncompleteVoidType
LV_DuplicateVectorComponents
LV_InvalidExpression
LV_InvalidMessageExpression
LV_MemberFunction
LV_SubObjCPropertySetting
LV_ClassTemporary
LV_ArrayTemporary

Definition at line 255 of file Expr.h.

enum clang::Expr::NullPointerConstantKind

Enumeration used to describe the kind of Null pointer constant returned from isNullPointerConstant().

Enumerator:

NPCK_NotNull	Expression is not a Null pointer constant.
NPCK_ZeroExpression	Expression is a Null pointer constant built from a zero integer expression that is not a simple, possibly parenthesized, zero literal. C++ Core Issue 903 will classify these expressions as "not pointers" once it is adopted. http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_active.html#903.
NPCK_ZeroLiteral	Expression is a Null pointer constant built from a literal zero.
NPCK_CXX11_nullptr	Expression is a C++11 nullptr.
NPCK_GNUNull	Expression is a GNU-style __null constant.

Definition at line 626 of file Expr.h.

enum clang::Expr::NullPointerConstantValueDependence

Enumeration used to describe how isNullPointerConstant() should cope with value-dependent expressions.

Enumerator:

NPC_NeverValueDependent	Specifies that the expression should never be value-dependent.
NPC_ValueDependentIsNull	Specifies that a value-dependent expression of integral or dependent type should be considered a null pointer constant.
NPC_ValueDependentIsNotNull	Specifies that a value-dependent expression should be considered to never be a null pointer constant.

Definition at line 649 of file Expr.h.

enum clang::Expr::SideEffectsKind

Enumerator:

SE_NoSideEffects
SE_AllowSideEffects

Definition at line 576 of file Expr.h.

Constructor & Destructor Documentation

clang::Expr::Expr	(	StmtClass	SC,
		QualType	T,
		ExprValueKind	VK,
		ExprObjectKind	OK,
		bool	TD,
		bool	VD,
		bool	ID,
		bool	ContainsUnexpandedParameterPack
	)		`[inline, protected]`

Definition at line 108 of file Expr.h.

References clang::Stmt::ExprBits, and setType().

clang::Expr::Expr	(	StmtClass	SC,
		EmptyShell
	)		`[inline, explicit, protected]`

Construct an empty expression.

Definition at line 122 of file Expr.h.

Member Function Documentation

Classification clang::Expr::Classify ( ASTContext & Ctx ) const [inline]

Classify - Classify this expression according to the C++11 expression taxonomy.

C++11 defines ([basic.lval]) a new taxonomy of expressions to replace the old lvalue vs rvalue. This function determines the type of expression this is. There are three expression types:

lvalues are classical lvalues as in C++03.
prvalues are equivalent to rvalues in C++03.
xvalues are expressions yielding unnamed rvalue references, e.g. a function returning an rvalue reference. lvalues and xvalues are collectively referred to as glvalues, while prvalues and xvalues together form rvalues.

Definition at line 374 of file Expr.h.

Referenced by clang::Sema::AddConversionCandidate(), clang::Sema::AddSurrogateCandidate(), AdjustFunctionParmAndArgTypesForDeduction(), clang::Sema::BuildCallToMemberFunction(), clang::Sema::BuildCallToObjectOfClassType(), clang::Sema::BuildOverloadedArrowExpr(), clang::canTypeidThrow(), clang::Sema::CheckPointerToMemberOperands(), ClassifyLValue(), isTemporaryObject(), clang::Sema::LookupSpecialMember(), clang::Sema::PerformObjectArgumentInitialization(), TryReferenceInit(), and TryReferenceInitializationCore().

Expr::LValueClassification Expr::ClassifyLValue ( ASTContext & Ctx ) const

Reasons why an expression might not be an l-value.

Definition at line 630 of file ExprClassification.cpp.

Referenced by clang::Sema::CheckAddressOfOperand(), isBoundMemberFunction(), and clang::InitializationSequence::Perform().

Classification clang::Expr::ClassifyModifiable	(	ASTContext &	Ctx,
		SourceLocation &	Loc
	)		const `[inline]`

ClassifyModifiable - Classify this expression according to the C++11 expression taxonomy, and see if it is valid on the left side of an assignment.

This function extends classify in that it also tests whether the expression is modifiable (C99 6.3.2.1p1).

Parameters:

Loc	A source location that might be filled with a relevant location if the expression is not modifiable.

Definition at line 386 of file Expr.h.

Referenced by isModifiableLvalue().

static bool clang::Expr::classof ( const Stmt * T ) [inline, static]

Reimplemented in clang::AtomicExpr, clang::PseudoObjectExpr, clang::AsTypeExpr, clang::BlockExpr, clang::ExtVectorElementExpr, clang::GenericSelectionExpr, clang::ParenListExpr, clang::ImplicitValueInitExpr, clang::DesignatedInitExpr, clang::InitListExpr, clang::CXXFoldExpr, clang::MaterializeTemporaryExpr, clang::VAArgExpr, clang::FunctionParmPackExpr, clang::GNUNullExpr, clang::SubstNonTypeTemplateParmPackExpr, clang::ChooseExpr, clang::SubstNonTypeTemplateParmExpr, clang::ConvertVectorExpr, clang::SizeOfPackExpr, clang::ShuffleVectorExpr, clang::PackExpansionExpr, clang::StmtExpr, clang::AddrLabelExpr, clang::CXXNoexceptExpr, clang::BinaryConditionalOperator, clang::UnresolvedMemberExpr, clang::ConditionalOperator, clang::AbstractConditionalOperator, clang::CXXDependentScopeMemberExpr, clang::CompoundAssignOperator, clang::BinaryOperator, clang::CXXUnresolvedConstructExpr, clang::CStyleCastExpr, clang::ExplicitCastExpr, clang::ExprWithCleanups, clang::ImplicitCastExpr, clang::CastExpr, clang::DependentScopeDeclRefExpr, clang::CompoundLiteralExpr, clang::MemberExpr, clang::UnresolvedLookupExpr, clang::OverloadExpr, clang::CallExpr, clang::ExpressionTraitExpr, clang::ArrayTypeTraitExpr, clang::TypeTraitExpr, clang::ArraySubscriptExpr, clang::UnaryExprOrTypeTraitExpr, clang::CXXPseudoDestructorExpr, clang::OffsetOfExpr, clang::CXXDeleteExpr, clang::CXXNewExpr, clang::UnaryOperator, clang::ParenExpr, clang::CXXScalarValueInitExpr, clang::StringLiteral, clang::ObjCBridgedCastExpr, clang::LambdaExpr, clang::ObjCIndirectCopyRestoreExpr, clang::ObjCIsaExpr, clang::ImaginaryLiteral, clang::FloatingLiteral, clang::ObjCMessageExpr, clang::CharacterLiteral, clang::CXXTemporaryObjectExpr, clang::IntegerLiteral, clang::CXXFunctionalCastExpr, clang::CXXConstructExpr, clang::PredefinedExpr, clang::DeclRefExpr, clang::CXXBindTemporaryExpr, clang::CXXDefaultInitExpr, clang::CXXDefaultArgExpr, clang::OpaqueValueExpr, clang::CXXThrowExpr, clang::ObjCSubscriptRefExpr, clang::CXXThisExpr, clang::CXXUuidofExpr, clang::ObjCPropertyRefExpr, clang::MSPropertyRefExpr, clang::CXXTypeidExpr, clang::ObjCIvarRefExpr, clang::CXXStdInitializerListExpr, clang::CXXNullPtrLiteralExpr, clang::ObjCProtocolExpr, clang::CXXBoolLiteralExpr, clang::UserDefinedLiteral, clang::ObjCSelectorExpr, clang::ObjCEncodeExpr, clang::CXXConstCastExpr, clang::ObjCDictionaryLiteral, clang::CXXReinterpretCastExpr, clang::CXXDynamicCastExpr, clang::CXXStaticCastExpr, clang::CXXNamedCastExpr, clang::CUDAKernelCallExpr, clang::ObjCArrayLiteral, clang::CXXMemberCallExpr, clang::ObjCBoxedExpr, clang::CXXOperatorCallExpr, clang::ObjCBoolLiteralExpr, and clang::ObjCStringLiteral.

Definition at line 796 of file Expr.h.

References clang::Stmt::getStmtClass().

bool clang::Expr::containsUnexpandedParameterPack ( ) const [inline]

Whether this expression contains an unexpanded parameter pack (for C++11 variadic templates).

Given the following function template:

 template<typename F, typename ...Types>
 void forward(const F &f, Types &&...args) {
   f(static_cast<Types&&>(args)...);
 }

The expressions args and static_cast<Types&&>(args) both contain parameter packs.

Definition at line 215 of file Expr.h.

References clang::Stmt::ExprBits.

Referenced by clang::Sema::ActOnCXXFoldExpr(), clang::Sema::ActOnOpenMPFinalClause(), clang::Sema::ActOnOpenMPIfClause(), clang::Sema::ActOnOpenMPLinearClause(), clang::Sema::ActOnOpenMPNumThreadsClause(), clang::Sema::ActOnOpenMPScheduleClause(), clang::AtomicExpr::AtomicExpr(), clang::Sema::BuildObjCDictionaryLiteral(), clang::CallExpr::CallExpr(), clang::Sema::CheckPackExpansion(), clang::Sema::containsUnexpandedParameterPacks(), clang::Sema::CreateGenericSelectionExpr(), clang::CXXConstructExpr::CXXConstructExpr(), clang::CXXNewExpr::CXXNewExpr(), clang::Sema::DiagnoseUnexpandedParameterPack(), handleAlignedAttr(), clang::InitListExpr::InitListExpr(), clang::CXXFoldExpr::isRightFold(), clang::ParenListExpr::ParenListExpr(), clang::InitListExpr::setInit(), clang::ShuffleVectorExpr::ShuffleVectorExpr(), and clang::TreeTransform< Derived >::TransformExprs().

bool Expr::EvaluateAsBooleanCondition	(	bool &	Result,
		const ASTContext &	Ctx
	)		const

EvaluateAsBooleanCondition - Return true if this is a constant which we we can fold and convert to a boolean condition using any crazy technique that we want to, even if the expression has side-effects.

Definition at line 8432 of file ExprConstant.cpp.

References EvaluateAsRValue(), and HandleConversionToBool().

Referenced by CheckNonNullExpr(), EvaluatesAsFalse(), and EvaluatesAsTrue().

bool Expr::EvaluateAsInitializer	(	APValue &	Result,
		const ASTContext &	Ctx,
		const VarDecl *	VD,
		SmallVectorImpl< PartialDiagnosticAt > &	Notes
	)		const

EvaluateAsInitializer - Evaluate an expression as if it were the initializer of the given declaration. Returns true if the initializer can be folded to a constant, and produces any relevant notes. In C++11, notes will be produced if the expression is not a constant expression.

Definition at line 8466 of file ExprConstant.cpp.

References CheckConstantExpression(), clang::Expr::EvalStatus::Diag, EvaluateInPlace(), clang::ASTContext::getLangOpts(), clang::Decl::getLocation(), getType(), clang::ValueDecl::getType(), clang::VarDecl::hasLocalStorage(), clang::Expr::EvalStatus::HasSideEffects, isRecordType(), clang::Type::isReferenceType(), and isRValue().

Referenced by clang::VarDecl::evaluateValue().

bool Expr::EvaluateAsInt	(	llvm::APSInt &	Result,
		const ASTContext &	Ctx,
		SideEffectsKind	AllowSideEffects = `SE_NoSideEffects`
	)		const

EvaluateAsInt - Return true if this is a constant which we can fold and convert to an integer, using any crazy technique that we want to.

Definition at line 8439 of file ExprConstant.cpp.

References EvaluateAsRValue(), and getType().

Referenced by clang::Sema::ActOnFinishSwitchStmt(), clang::Sema::CheckLogicalOperands(), clang::Sema::CheckMultiplyDivideOperands(), CheckOpenMPLoop(), clang::Sema::CheckRemainderOperands(), clang::CodeGen::CodeGenFunction::ConstantFoldsToSimpleInteger(), clang::CodeGen::CodeGenFunction::EmitBuiltinExpr(), clang::ento::SValBuilder::getConstantVal(), handleFormatArgAttr(), isConstantInitializer(), isInLoop(), isIntegerConstantExpr(), SemaBuiltinMemChkCall(), TryToFixInvalidVariablyModifiedType(), and clang::ento::ExprEngine::VisitOffsetOfExpr().

bool Expr::EvaluateAsLValue	(	EvalResult &	Result,
		const ASTContext &	Ctx
	)		const

EvaluateAsLValue - Evaluate an expression to see if we can fold it to an lvalue with link time known address, with no side-effects.

Definition at line 8453 of file ExprConstant.cpp.

References CheckLValueConstantExpression(), EvaluateLValue(), getExprLoc(), clang::ASTContext::getLValueReferenceType(), and getType().

Referenced by clang::CodeGen::CodeGenModule::EmitConstantExpr(), isConstantInitializer(), and clang::CodeGen::CodeGenFunction::tryEmitAsConstant().

bool Expr::EvaluateAsRValue	(	EvalResult &	Result,
		const ASTContext &	Ctx
	)		const

EvaluateAsRValue - Return true if this is a constant which we can fold using any crazy technique (that has nothing to do with language standards) that we want to. If this function returns true, it returns the folded constant in Result. If this expression is a glvalue, an lvalue-to-rvalue conversion will be applied to the result.

EvaluateAsRValue - Return true if this is a constant which we can fold to an rvalue using any crazy technique (that has nothing to do with language standards) that we want to, even if the expression has side-effects. If this function returns true, it returns the folded constant in Result. If the expression is a glvalue, an lvalue-to-rvalue conversion will be applied.

Definition at line 8423 of file ExprConstant.cpp.

References FastEvaluateAsRValue().

Referenced by clang::Sema::CheckConvertedConstantExpression(), CheckEvalInICE(), clang::CodeGen::CodeGenFunction::EmitBuiltinExpr(), clang::CodeGen::CodeGenModule::EmitConstantExpr(), EvaluateAsBooleanCondition(), EvaluateAsInt(), EvaluateBuiltinConstantP(), EvaluateForOverflow(), EvaluateKnownConstInt(), clang::CodeGen::CodeGenModule::GetAddrOfGlobalTemporary(), isCXX11ConstantExpr(), isEvaluatable(), isNullPointerValueTemplateArgument(), clang::CodeGen::CodeGenFunction::tryEmitAsConstant(), and clang::Sema::VerifyIntegerConstantExpression().

void Expr::EvaluateForOverflow ( const ASTContext & Ctx ) const

Definition at line 8524 of file ExprConstant.cpp.

References EvaluateAsRValue(), and FastEvaluateAsRValue().

APSInt Expr::EvaluateKnownConstInt	(	const ASTContext &	Ctx,
		SmallVectorImpl< PartialDiagnosticAt > *	Diag = `nullptr`
	)		const

EvaluateKnownConstInt - Call EvaluateAsRValue and return the folded integer. This must be called on an expression that constant folds to an integer.

Definition at line 8512 of file ExprConstant.cpp.

References Diag(), and EvaluateAsRValue().

Referenced by clang::Sema::ActOnFinishSwitchStmt(), CheckICE(), clang::Sema::DiagnoseAssignmentEnum(), clang::CodeGen::CodeGenFunction::EmitCaseStmt(), clang::CodeGen::CodeGenFunction::EmitCaseStmtRange(), clang::CodeGen::CodeGenFunction::EmitCondBrHints(), EvaluateSwitch(), FindCaseStatementsForValue(), clang::FieldDecl::getBitWidthValue(), clang::ShuffleVectorExpr::getShuffleMaskIdx(), isNullPointerConstant(), IsStandardConversion(), clang::ento::ExprEngine::processSwitch(), TryOCLZeroEventInitialization(), clang::Sema::VerifyIntegerConstantExpression(), and clang::ento::ExprEngine::VisitUnaryExprOrTypeTraitExpr().

bool Expr::EvaluateWithSubstitution	(	APValue &	Value,
		ASTContext &	Ctx,
		const FunctionDecl *	Callee,
		ArrayRef< const Expr * >	Args
	)		const

EvaluateWithSubstitution - Evaluate an expression as if from the context of a call to the given function with the given arguments, inside an unevaluated context. Returns true if the expression could be folded to a constant.

Definition at line 9038 of file ExprConstant.cpp.

References Evaluate(), and clang::Decl::getLocation().

QualType Expr::findBoundMemberType ( const Expr * expr ) [static]

Given an expression of bound-member type, find the type of the member. Returns null if this is an *overloaded* bound member expression.

Definition at line 2369 of file Expr.cpp.

References clang::Type::castAs(), hasPlaceholderType(), IgnoreParens(), clang::Type::isFunctionType(), and clang::ast_matchers::type.

Referenced by clang::CallExpr::getCallReturnType().

const CXXRecordDecl * Expr::getBestDynamicClassType ( ) const

For an expression of class type or pointer to class type, return the most derived class decl the expression is known to refer to.

If this expression is a cast, this method looks through it to find the most derived decl that can be inferred from the expression. This is valid because derived-to-base conversions have undefined behavior if the object isn't dynamically of the derived type.

Definition at line 39 of file Expr.cpp.

References clang::Type::castAs(), clang::Type::getAs(), clang::RecordType::getDecl(), clang::Type::getPointeeType(), getType(), ignoreParenBaseCasts(), and clang::Type::isDependentType().

Referenced by clang::CodeGen::CodeGenFunction::CanDevirtualizeMemberFunctionCall(), clang::CodeGen::CodeGenFunction::EmitCXXMemberCallExpr(), and MarkExprReferenced().

SourceLocation Expr::getExprLoc ( ) const

getExprLoc - Return the preferred location for the arrow when diagnosing a problem with a generic expression.

Reimplemented in clang::PseudoObjectExpr, clang::UnresolvedMemberExpr, clang::BinaryOperator, clang::MemberExpr, clang::ArraySubscriptExpr, clang::UnaryOperator, clang::ObjCIndirectCopyRestoreExpr, clang::ObjCIsaExpr, clang::CXXDefaultArgExpr, and clang::OpaqueValueExpr.

Definition at line 193 of file Expr.cpp.

References clang::Stmt::getStmtClass(), and clang::Stmt::NoStmtClass.

const ObjCPropertyRefExpr * Expr::getObjCProperty ( ) const

If this expression is an l-value for an Objective C property, find the underlying property reference expression.

Definition at line 3250 of file Expr.cpp.

References clang::BO_Comma, getObjectKind(), getValueKind(), IgnoreParenCasts(), clang::OK_ObjCProperty, and clang::VK_LValue.

ExprObjectKind clang::Expr::getObjectKind ( ) const [inline]

getObjectKind - The object kind that this expression produces. Object kinds are meaningful only for expressions that yield an l-value or x-value.

Definition at line 409 of file Expr.h.

References clang::Stmt::ExprBits.

Referenced by clang::Sema::ActOnChooseExpr(), clang::Sema::ActOnConditionalOp(), BuildFieldReferenceExpr(), clang::Sema::CheckAddressOfOperand(), CheckAlignOfExpr(), CheckIncrementDecrementOperand(), CheckRealImagOperand(), ClassifyBinaryOp(), clang::PseudoObjectExpr::Create(), clang::Sema::CreateBuiltinBinOp(), clang::Sema::CreateBuiltinUnaryOp(), clang::Sema::CXXCheckConditionalOperands(), clang::CodeGen::CodeGenFunction::EmitCallArg(), getObjCProperty(), IsModifiable(), isOrdinaryOrBitFieldObject(), clang::Sema::PerformImplicitConversion(), clang::TreeTransform< Derived >::RebuildCXXOperatorCallExpr(), refersToBitField(), TryReinterpretCast(), clang::ConversionFixItGenerator::tryToFixConversion(), clang::ASTNodeImporter::VisitBinaryOperator(), clang::ASTNodeImporter::VisitCompoundAssignOperator(), and clang::ASTNodeImporter::VisitUnaryOperator().

FieldDecl * Expr::getSourceBitField ( )

If this expression refers to a bit-field, retrieve the declaration of that bit-field.

Note that this returns a non-null pointer in subtly different places than refersToBitField returns true. In particular, this can return a non-null pointer even for r-values loaded from bit-fields, but it will return null for a conditional bit-field.

Definition at line 3288 of file Expr.cpp.

References clang::BO_Comma, clang::CK_LValueToRValue, clang::CK_NoOp, getSourceBitField(), IgnoreParens(), and clang::VK_RValue.

Referenced by getSourceBitField(), clang::Sema::IsIntegralPromotion(), clang::ASTContext::isPromotableBitField(), and clang::InitializationSequence::Perform().

const FieldDecl* clang::Expr::getSourceBitField ( ) const [inline]

Definition at line 445 of file Expr.h.

References getSourceBitField().

QualType clang::Expr::getType ( ) const [inline]

Definition at line 125 of file Expr.h.

ExprValueKind clang::Expr::getValueKind ( ) const [inline]

getValueKind - The value kind that this expression produces.

Definition at line 402 of file Expr.h.

References clang::Stmt::ExprBits.

Referenced by clang::Sema::ActOnChooseExpr(), clang::Sema::ActOnConditionalOp(), clang::Sema::BuildCXXTypeId(), BuildFieldReferenceExpr(), clang::Sema::CheckCXXThrowOperand(), clang::Sema::CheckPointerToMemberOperands(), CheckTemplateArgumentPointerToMember(), clang::Sema::checkUnknownAnyCast(), ClassifyInternal(), convertQualifiersAndValueKindIfNecessary(), clang::Sema::CreateBuiltinArraySubscriptExpr(), clang::Sema::CreateBuiltinBinOp(), clang::Sema::CreateBuiltinUnaryOp(), clang::Sema::CXXCheckConditionalOperands(), diagnoseNoViableConversion(), EvalVal(), clang::Sema::FixOverloadedFunctionReference(), getDecltypeForExpr(), getObjCProperty(), clang::ento::CallEvent::getResultType(), clang::MaterializeTemporaryExpr::isBoundToLvalueReference(), isGLValue(), isLValue(), isRValue(), isXValue(), maybeRebuildARCConsumingStmt(), clang::InitializationSequence::Perform(), clang::Sema::PerformImplicitConversion(), clang::Sema::PerformObjectArgumentInitialization(), clang::Sema::PerformObjectMemberConversion(), clang::TreeTransform< Derived >::RebuildMemberExpr(), recordConversion(), clang::ASTNodeImporter::VisitBinaryOperator(), clang::ASTNodeImporter::VisitCompoundAssignOperator(), clang::ASTNodeImporter::VisitCStyleCastExpr(), clang::ASTNodeImporter::VisitDeclRefExpr(), clang::ASTNodeImporter::VisitImplicitCastExpr(), and clang::ASTNodeImporter::VisitUnaryOperator().

static ExprValueKind clang::Expr::getValueKindForType ( QualType T ) [inline, static]

getValueKindForType - Given a formal return or parameter type, give its value kind.

Definition at line 392 of file Expr.h.

References clang::Type::getAs(), clang::VK_LValue, clang::VK_RValue, and clang::VK_XValue.

Referenced by clang::Sema::AddConversionCandidate(), clang::Sema::BuildCallToMemberFunction(), clang::Sema::BuildCallToObjectOfClassType(), clang::Sema::BuildCXXMemberCallExpr(), clang::Sema::BuildCXXTypeConstructExpr(), clang::Sema::BuildLiteralOperatorCall(), clang::Sema::BuildOverloadedArrowExpr(), clang::Sema::BuildResolvedCallExpr(), clang::Sema::CheckMessageArgumentTypes(), clang::Sema::CreateOverloadedArraySubscriptExpr(), clang::Sema::CreateOverloadedBinOp(), clang::Sema::CreateOverloadedUnaryOp(), EvaluateBinaryTypeTrait(), evaluateTypeTrait(), GenerateInjectedTemplateArgs(), clang::TreeTransform< Derived >::RebuildShuffleVectorExpr(), and TryReinterpretCast().

bool Expr::hasAnyTypeDependentArguments ( ArrayRef< Expr * > Exprs ) [static]

hasAnyTypeDependentArguments - Determines if any of the expressions in Exprs is type-dependent.

Definition at line 2704 of file Expr.cpp.

References isTypeDependent().

Referenced by clang::Sema::ActOnCallExpr(), clang::Sema::BuildCXXNew(), clang::Sema::BuildCXXTypeConstructExpr(), clang::Sema::CodeCompleteCall(), and clang::InitializationSequence::InitializeFrom().

bool Expr::hasNonTrivialCall ( ASTContext & Ctx )

Determine whether this expression involves a call to any function that is not trivial.

Definition at line 3130 of file Expr.cpp.

References Finder.

Referenced by evaluateTypeTrait().

bool clang::Expr::hasPlaceholderType ( ) const [inline]

Returns whether this expression has a placeholder type.

Definition at line 460 of file Expr.h.

References getType(), and clang::Type::isPlaceholderType().

Referenced by clang::Sema::ActOnConditionalOp(), clang::Sema::BuildArrayType(), clang::Sema::BuildInstanceMessage(), CheckArrow(), clang::Sema::CheckAssignmentOperands(), CheckForModifiableLvalue(), clang::Sema::CheckMessageArgumentTypes(), clang::Sema::checkUnknownAnyArg(), ClassifyBinaryOp(), clang::Sema::diagnoseARCUnbridgedCast(), findBoundMemberType(), clang::Sema::IgnoredValueConversions(), clang::Sema::PerformContextualImplicitConversion(), clang::Sema::recreateSyntacticForm(), and clang::Sema::stripARCUnbridgedCast().

bool clang::Expr::hasPlaceholderType ( BuiltinType::Kind K ) const [inline]

Returns whether this expression has a specific placeholder type.

Definition at line 465 of file Expr.h.

References getType(), and clang::BuiltinType::isPlaceholderTypeKind().

bool Expr::HasSideEffects ( const ASTContext & Ctx ) const

HasSideEffects - This routine returns true for all those expressions which have any effect other than producing a value. Example is a function call, volatile variable read, or throwing an exception.

Definition at line 2869 of file Expr.cpp.

References clang::LambdaExpr::capture_begin(), clang::LambdaExpr::capture_end(), clang::Stmt::children(), clang::CK_Dynamic, clang::CK_LValueToRValue, clang::CastExpr::getCastKind(), clang::CXXConstructExpr::getConstructor(), clang::FieldDecl::getInClassInitializer(), clang::Stmt::getStmtClass(), clang::CastExpr::getSubExpr(), getType(), clang::ExplicitCastExpr::getTypeAsWritten(), HasSideEffects(), isInstantiationDependent(), clang::Type::isReferenceType(), clang::FunctionDecl::isTrivial(), clang::QualType::isVolatileQualified(), clang::LCK_ByCopy, clang::Stmt::NoStmtClass, S, clang::PseudoObjectExpr::semantics_begin(), and clang::PseudoObjectExpr::semantics_end().

Referenced by clang::ASTContext::DeclMustBeEmitted(), clang::CodeGen::CodeGenFunction::EmitBuiltinExpr(), clang::arcmt::trans::hasSideEffects(), HasSideEffects(), clang::InitializationSequence::InitializeFrom(), and isIdenticalStmt().

Expr * Expr::IgnoreCasts ( )

Ignore casts. Strip off any CastExprs, returning their operand.

Definition at line 2446 of file Expr.cpp.

References P.

Referenced by IgnoreCasts().

const Expr* clang::Expr::IgnoreCasts ( ) const [inline]

Strip off casts, but keep parentheses.

Definition at line 770 of file Expr.h.

References IgnoreCasts().

Expr * Expr::IgnoreConversionOperator ( )

IgnoreConversionOperator - Ignore conversion operator. If this Expr is a call to a conversion operator, return the argument.

Definition at line 2533 of file Expr.cpp.

Referenced by IgnoreConversionOperator(), and IsArithmeticBinaryExpr().

const Expr* clang::Expr::IgnoreConversionOperator ( ) const [inline]

Definition at line 716 of file Expr.h.

References IgnoreConversionOperator().

Expr * clang::Expr::IgnoreImpCasts ( ) [inline]

IgnoreImpCasts - Skip past any implicit casts which might surround this expression. Only skips ImplicitCastExprs.

Definition at line 2802 of file Expr.h.

Referenced by addFixitForObjCARCConversion(), castOperatorNeedsParens(), CheckFoldOperand(), CheckIdentityFieldAssignment(), CheckTemplateArgumentAddressOfObjectOrFunction(), CheckTemplateArgumentPointerToMember(), clang::Sema::DiagnoseAlwaysNonNullPointer(), diagnoseLogicalNotOnLHSofComparison(), diagnoseStringPlusChar(), diagnoseStringPlusInt(), doRewriteToUTF8StringBoxedExpressionHelper(), clang::CodeGen::CodeGenFunction::EmitBuiltinExpr(), IgnoreImpCasts(), IsArithmeticBinaryExpr(), requiresParensToAddCast(), rewriteToNumericBoxedExpression(), subscriptOperatorNeedsParens(), clang::ConversionFixItGenerator::tryToFixConversion(), and ValidDuplicateEnum().

const Expr* clang::Expr::IgnoreImpCasts ( ) const [inline]

Definition at line 760 of file Expr.h.

References IgnoreImpCasts().

Expr* clang::Expr::IgnoreImplicit ( ) [inline]

IgnoreImplicit - Skip past any implicit AST nodes which might surround this expression.

Reimplemented from clang::Stmt.

Definition at line 687 of file Expr.h.

Referenced by BuildCounterUpdate(), clang::Sema::CodeCompleteCase(), clang::CXXConstructorDecl::getTargetConstructor(), IgnoreImplicit(), IsCallableWithAppend(), clang::ento::ExprEngine::ProcessInitializer(), and clang::consumed::ConsumedStmtVisitor::VisitVarDecl().

const Expr* clang::Expr::IgnoreImplicit ( ) const [inline]

Definition at line 691 of file Expr.h.

References IgnoreImplicit().

Expr * Expr::ignoreParenBaseCasts ( )

Ignore parentheses and derived-to-base casts.

Definition at line 2494 of file Expr.cpp.

References clang::CK_DerivedToBase, clang::CK_NoOp, clang::CK_UncheckedDerivedToBase, and IgnoreParens().

Referenced by clang::CodeGen::CodeGenFunction::EmitCXXMemberCallExpr(), getBestDynamicClassType(), and ignoreParenBaseCasts().

const Expr* clang::Expr::ignoreParenBaseCasts ( ) const [inline]

Definition at line 740 of file Expr.h.

References ignoreParenBaseCasts().

Expr * Expr::IgnoreParenCasts ( )

IgnoreParenCasts - Ignore parentheses and casts. Strip off any ParenExpr or CastExprs or ImplicitCastExprs, returning their operand.

IgnoreParenCasts - Ignore parentheses and casts. Strip off any ParenExpr or CastExprs, returning their operand.

Definition at line 2424 of file Expr.cpp.

References IgnoreParens(), and P.

Referenced by clang::Sema::ActOnFinishSwitchStmt(), clang::Sema::BuildCallToMemberFunction(), clang::Sema::CheckAssignmentOperands(), clang::Sema::CheckCompareOperands(), checkFormatStringExpr(), CheckForModifiableLvalue(), CheckForNullPointerDereference(), CheckICE(), CheckIndirectionOperand(), checkObjCPointerIntrospection(), clang::Sema::CheckSingleAssignmentConstraints(), clang::Sema::checkStringLiteralArgumentAttr(), CheckTemplateArgumentAddressOfObjectOrFunction(), clang::Sema::CodeCompleteCall(), clang::Sema::CodeCompleteCase(), clang::Sema::CreateBuiltinBinOp(), clang::Sema::DefaultLvalueConversion(), diagnoseObjCLiteralComparison(), clang::CodeGen::CodeGenFunction::EmitBuiltinExpr(), findCapturingExpr(), GenerateMinimalPathDiagnostic(), clang::CallExpr::getCalleeDecl(), clang::ento::bugreporter::getDerefExpr(), getIncrementedVar(), getNSArrayObjects(), getObjCProperty(), clang::arcmt::trans::hasSideEffects(), ignoreLiteralAdditions(), IgnoreParenCasts(), clang::threadSafety::isCalleeArrow(), isCapturedBy(), IsControlFlowExpr(), clang::arcmt::trans::isGlobalVar(), clang::arcmt::trans::isPlusOne(), clang::ASTContext::isSentinelNullExpr(), isTrivialDoWhile(), isTrivialExpression(), LookThroughTransitiveAssignmentsAndCommaOperators(), LookupMemberExpr(), clang::sema::FunctionScopeInfo::markSafeWeakUse(), maybeAdjustInterfaceForSubscriptingCheck(), clang::ento::ConditionBRVisitor::patternMatch(), peelOffOuterExpr(), clang::TreeTransform< Derived >::RebuildCXXOperatorCallExpr(), RemoveSelectorFromWarningCache(), scan_ivar_release(), SemaBuiltinAnnotation(), clang::ento::bugreporter::trackNullOrUndefValue(), TryEvaluateBuiltinNaN(), clang::ConversionFixItGenerator::tryToFixConversion(), UseNSOptionsMacro(), clang::threadSafety::VarMapBuilder::VisitBinaryOperator(), clang::ento::FindLastStoreBRVisitor::VisitNode(), and clang::ento::ConditionBRVisitor::VisitTrueTest().

const Expr* clang::Expr::IgnoreParenCasts ( ) const [inline]

Definition at line 766 of file Expr.h.

References IgnoreParenCasts().

Expr * Expr::IgnoreParenImpCasts ( )

IgnoreParenImpCasts - Ignore parentheses and implicit casts. Strip off any ParenExpr or ImplicitCastExprs, returning their operand.

Definition at line 2511 of file Expr.cpp.

References IgnoreParens(), and P.

Referenced by clang::Sema::ActOnOpenMPAtomicDirective(), checkArithmeticNull(), clang::Sema::CheckCompareOperands(), checkEnumComparison(), CheckForDanglingReferenceOrPointer(), checkForFunctionCall(), checkForLiteralCreation(), CheckForReference(), CheckICE(), clang::Sema::CheckLiteralKind(), clang::Sema::CheckPlaceholderExpr(), clang::Sema::CheckStaticArrayArgument(), clang::Sema::CheckSubscriptingKind(), checkUnsafeAssignLiteral(), clang::Sema::CheckVectorCompareOperands(), ClassifyConditional(), ClassifyMemberExpr(), clang::Sema::ConversionToObjCStringLiteralCheck(), clang::Sema::CXXCheckConditionalOperands(), DiagnoseARCUseOfWeakReceiver(), clang::Sema::DiagnoseConditionalForNull(), DiagnoseCStringFormatDirectiveInCFAPI(), DiagnoseCStringFormatDirectiveInObjCAPI(), DiagnoseSelfAssignment(), diagnoseUnknownAnyExpr(), clang::Sema::EmitRelatedResultTypeNote(), ExprLooksBoolean(), clang::CallExpr::getCalleeDecl(), getSizeOfExprArg(), IgnoreParenImpCasts(), isEnumConstant(), isObjCObjectLiteral(), isObjCSelfExpr(), IsReadonlyMessage(), LookupMemberExpr(), clang::ento::ExprEngine::processSwitch(), clang::edit::rewriteObjCRedundantCallWithLiteral(), rewriteToNumberLiteral(), and ShouldDiagnoseSwitchCaseNotInEnum().

const Expr* clang::Expr::IgnoreParenImpCasts ( ) const [inline]

Definition at line 720 of file Expr.h.

References IgnoreParenImpCasts().

Expr * Expr::IgnoreParenLValueCasts ( )

IgnoreParenLValueCasts - Ignore parentheses and lvalue-to-rvalue casts. This is intended purely as a temporary workaround for code that hasn't yet been rewritten to do the right thing about those casts, and may disappear along with the last internal use.

Ignore parentheses and lvalue casts. Strip off any ParenExpr and CastExprs that represent lvalue casts, returning their operand.

Definition at line 2471 of file Expr.cpp.

References clang::CK_LValueToRValue, IgnoreParens(), and P.

Referenced by IgnoreParenLValueCasts(), and clang::Sema::isSelfExpr().

const Expr* clang::Expr::IgnoreParenLValueCasts ( ) const [inline]

Definition at line 728 of file Expr.h.

References IgnoreParenLValueCasts().

Expr * Expr::IgnoreParenNoopCasts ( ASTContext & Ctx )

IgnoreParenNoopCasts - Ignore parentheses and casts that do not change the value (including ptr->int casts of the same size). Strip off any ParenExpr or CastExprs, returning their operand.

Definition at line 2544 of file Expr.cpp.

References getType(), clang::ASTContext::getTypeSize(), clang::ASTContext::hasSameUnqualifiedType(), IgnoreParens(), clang::Type::isIntegralType(), clang::Type::isPointerType(), and P.

Referenced by CheckAsmLValue(), clang::CodeGen::CodeGenFunction::EmitAsmStmt(), and IgnoreParenNoopCasts().

const Expr* clang::Expr::IgnoreParenNoopCasts ( ASTContext & Ctx ) const [inline]

Definition at line 774 of file Expr.h.

References IgnoreParenNoopCasts().

Expr * Expr::IgnoreParens ( )

IgnoreParens - Ignore parentheses. If this Expr is a ParenExpr, return its subexpression. If that subexpression is also a ParenExpr, then this method recursively returns its subexpression, and so forth. Otherwise, the method returns the current Expr.

Definition at line 2393 of file Expr.cpp.

References P, and clang::UO_Extension.

Referenced by clang::Sema::ActOnCallExpr(), clang::Sema::ActOnCXXThrow(), clang::ento::ProgramState::addTaint(), clang::Sema::BuildCallToMemberFunction(), clang::Sema::BuildCXXMemberCallExpr(), clang::Sema::BuildObjCBoxedExpr(), clang::Sema::canThrow(), clang::Sema::CheckAddressOfOperand(), CheckAlignOfExpr(), CheckForDanglingReferenceOrPointer(), clang::Sema::CheckLiteralKind(), clang::Sema::CheckPointerToMemberOperands(), clang::Sema::checkPseudoObjectAssignment(), clang::Sema::checkPseudoObjectIncDec(), clang::Sema::checkPseudoObjectRValue(), CheckStringInit(), clang::Sema::CheckUnaryExprOrTypeTraitOperand(), clang::Sema::checkUnknownAnyArg(), clang::Sema::checkUnsafeExprAssigns(), clang::Sema::CheckVecStepExpr(), ClassifyInternal(), ClassifyMemberExpr(), clang::ento::ExprEngine::CreateCXXTemporaryObject(), clang::Sema::CreateGenericSelectionExpr(), clang::Sema::diagnoseARCUnbridgedCast(), DiagnoseBadConversion(), clang::Sema::DiagnoseEqualityWithExtraParens(), DoMarkVarDeclReferenced(), doRewriteToUTF8StringBoxedExpressionHelper(), clang::CodeGen::CodeGenFunction::EmitBranchOnBoolExpr(), clang::CodeGen::CodeGenFunction::EmitCallExpr(), clang::CodeGen::CodeGenFunction::EmitCXXMemberCallExpr(), clang::CodeGen::CodeGenFunction::EmitCXXMemberPointerCallExpr(), EmitLValueOrThrowExpression(), EvalAddr(), EvalVal(), clang::OverloadExpr::find(), clang::Sema::FindAssociatedClassesAndNamespaces(), findBoundMemberType(), findEnumForBlockReturn(), findPeephole(), findRetainCycleOwner(), GetAlignOfExpr(), getArrayIndexingBound(), clang::ento::SValBuilder::getConstantVal(), clang::Sema::getCopyElisionCandidate(), getDecltypeForExpr(), clang::CXXMemberCallExpr::getImplicitObjectArgument(), clang::CXXMemberCallExpr::getMethodDecl(), GetNumNonZeroBytesInInit(), getRightmostLeaf(), getSourceBitField(), clang::CFGBlock::getTerminatorCondition(), ignoreParenBaseCasts(), IgnoreParenCasts(), IgnoreParenImpCasts(), IgnoreParenLValueCasts(), IgnoreParenNoopCasts(), IgnoreParens(), ignoreTransparentExprs(), clang::InitializationSequence::InitializeFrom(), isBlockVarRef(), isCheapEnoughToEvaluateUnconditionally(), isFlexibleArrayMemberExpr(), isGLValueFromPointerDeref(), isInvalidICRSource(), isKnownToHaveBooleanValue(), IsModifiable(), isOBJCGCCandidate(), isParenthesizedADLCallee(), isReferenceToNonConstCapture(), isSimpleZero(), IsSpecialDiscardedValue(), IsStandardConversion(), IsStringInit(), clang::InitListExpr::isStringLiteralInit(), clang::Sema::IsStringLiteralToNonConstPointerConversion(), clang::ento::ProgramState::isTainted(), isUnusedResultAWarning(), clang::Sema::MaybeBindToTemporary(), maybeGetUnaryAddrOfOperand(), optimizeEdges(), clang::ento::ExprEngine::processBranch(), refersToVectorElement(), clang::Sema::RequireCompleteExprType(), ResolveCondition(), shouldEmitSeparateBlockRetain(), shouldExtendReceiverForInnerPointerMessage(), skipRValueSubobjectAdjustments(), skipTemporaryBindingsNoOpCastsAndParens(), stripOpaqueValuesFromPseudoObjectRef(), tryEmitARCRetainLoadOfScalar(), tryEmitARCRetainScalarExpr(), clang::Sema::tryExprAsCall(), clang::Sema::UpdateMarkingForLValueToRValue(), clang::ento::ExprEngine::VisitBinaryOperator(), clang::ento::ExprEngine::VisitGuardedExpr(), clang::ento::ExprEngine::VisitIncrementDecrementOperator(), clang::ento::ExprEngine::VisitLvalArraySubscriptExpr(), and clang::ento::ExprEngine::VisitUnaryOperator().

const Expr* clang::Expr::IgnoreParens ( ) const [inline]

Definition at line 763 of file Expr.h.

References IgnoreParens().

bool Expr::isBoundMemberFunction ( ASTContext & Ctx ) const

Returns true if this expression is a bound member function.

Definition at line 2363 of file Expr.cpp.

References ClassifyLValue(), isTypeDependent(), and LV_MemberFunction.

bool Expr::isConstantInitializer	(	ASTContext &	Ctx,
		bool	ForRef,
		const Expr **	Culprit = `nullptr`
	)		const

isConstantInitializer - Returns true if this expression can be emitted to IR as a constant, and thus can be used as a constant initializer in C. If this expression is not constant and Culprit is non-null, it is used to store the address of first non constant expr.

Definition at line 2712 of file Expr.cpp.

References clang::CK_AtomicToNonAtomic, clang::CK_ConstructorConversion, clang::CK_LValueToRValue, clang::CK_NonAtomicToAtomic, clang::CK_NoOp, clang::CK_ToUnion, EvaluateAsInt(), EvaluateAsLValue(), clang::CXXConstructExpr::getArg(), clang::Type::getAs(), clang::CastExpr::getCastKind(), clang::CXXConstructExpr::getConstructor(), clang::InitListExpr::getInit(), clang::InitListExpr::getInitializedFieldInUnion(), clang::CXXConstructExpr::getNumArgs(), clang::InitListExpr::getNumInits(), clang::UnaryOperator::getOpcode(), clang::CXXMethodDecl::getParent(), clang::Stmt::getStmtClass(), clang::UnaryOperator::getSubExpr(), clang::CastExpr::getSubExpr(), getType(), clang::Expr::EvalStatus::HasSideEffects, clang::CXXRecordDecl::hasTrivialDestructor(), clang::Type::isArrayType(), isConstantInitializer(), isEvaluatable(), clang::Type::isRecordType(), clang::Type::isReferenceType(), clang::FunctionDecl::isTrivial(), clang::TagDecl::isUnion(), and clang::UO_Extension.

Referenced by clang::Sema::AddInitializerToDecl(), clang::Sema::CheckCompleteVariableDeclaration(), clang::Sema::CheckForConstantInitializer(), clang::CodeGen::CodeGenFunction::EmitAutoVarAlloca(), clang::Sema::InstantiateVariableInitializer(), and isConstantInitializer().

bool Expr::isCXX11ConstantExpr	(	const ASTContext &	Ctx,
		APValue *	Result = `nullptr`,
		SourceLocation *	Loc = `nullptr`
	)		const

isCXX11ConstantExpr - Return true if this expression is a constant expression in C++11. Can only be used in C++.

Note: This does not perform the implicit conversions required by C++11 [expr.const]p5.

Definition at line 9012 of file ExprConstant.cpp.

References clang::Expr::EvalStatus::Diag, EvaluateAsRValue(), getExprLoc(), and clang::ASTContext::getLangOpts().

Referenced by EvaluateCPlusPlus11IntegralConstantExpr(), and clang::StandardConversionSequence::getNarrowingKind().

bool Expr::isCXX98IntegralConstantExpr ( const ASTContext & Ctx ) const

isCXX98IntegralConstantExpr - Return true if this expression is an integral constant expression in C++98. Can only be used in C++.

Definition at line 9008 of file ExprConstant.cpp.

References CheckICE().

Referenced by isNullPointerConstant().

bool Expr::isDefaultArgument ( ) const

Determine whether this expression is a default function argument.

Default arguments are implicitly generated in the abstract syntax tree by semantic analysis for function calls, object constructions, etc. in C++. Default arguments are represented by CXXDefaultArgExpr nodes; this routine also looks through any implicit casts to determine whether the expression is a default argument.

Definition at line 2579 of file Expr.cpp.

Referenced by clang::TreeTransform< Derived >::DropCallArgument(), and clang::CXXConstructExpr::getLocEnd().

bool Expr::isEvaluatable ( const ASTContext & Ctx ) const

isEvaluatable - Call EvaluateAsRValue to see if this expression can be constant folded without side-effects, but discard the result.

isEvaluatable - Call EvaluateAsRValue to see if this expression can be constant folded, but discard the result.

Definition at line 8507 of file ExprConstant.cpp.

References EvaluateAsRValue().

Referenced by clang::Sema::ActOnGCCAsmStmt(), clang::Sema::AddInitializerToDecl(), clang::CodeGen::CodeGenFunction::EmitReturnStmt(), EvaluateBuiltinConstantP(), isCheapEnoughToEvaluateUnconditionally(), and isConstantInitializer().

bool clang::Expr::isGLValue ( ) const [inline]

Definition at line 253 of file Expr.h.

References getValueKind(), and clang::VK_RValue.

bool Expr::isImplicitCXXThis ( ) const

Whether this expression is an implicit reference to 'this' in C++.

Definition at line 2660 of file Expr.cpp.

References clang::CK_DerivedToBase, clang::CK_LValueToRValue, clang::CK_NoOp, clang::CK_UncheckedDerivedToBase, Paren, and clang::UO_Extension.

Referenced by clang::MSPropertyRefExpr::isImplicitAccess(), clang::MemberExpr::isImplicitAccess(), clang::CXXDependentScopeMemberExpr::isImplicitAccess(), and clang::UnresolvedMemberExpr::isImplicitAccess().

bool clang::Expr::isInstantiationDependent ( ) const [inline]

Whether this expression is instantiation-dependent, meaning that it depends in some way on a template parameter, even if neither its type nor (constant) value can change due to the template instantiation.

In the following example, the expression sizeof(sizeof(T() + T())) is instantiation-dependent (since it involves a template parameter T), but is neither type- nor value-dependent, since the type of the inner sizeof is known (std::size_t) and therefore the size of the outer sizeof is known.

 template<typename T>
 void f(T x, T y) {
   sizeof(sizeof(T() + T());
 }

Definition at line 192 of file Expr.h.

References clang::Stmt::ExprBits.

Referenced by clang::Sema::ActOnOpenMPAtomicDirective(), clang::Sema::ActOnOpenMPFinalClause(), clang::Sema::ActOnOpenMPIfClause(), clang::Sema::ActOnOpenMPLinearClause(), clang::Sema::ActOnOpenMPScheduleClause(), clang::AtomicExpr::AtomicExpr(), clang::CallExpr::CallExpr(), CheckIfAnyEnclosingLambdasMustCaptureAnyPotentialCaptures(), clang::CXXConstructExpr::CXXConstructExpr(), clang::CXXNewExpr::CXXNewExpr(), findTemplateParameter(), clang::ASTContext::getDecltypeType(), HasSideEffects(), clang::InitListExpr::InitListExpr(), clang::TemplateArgument::isInstantiationDependent(), clang::DecltypeType::isSugared(), clang::ParenListExpr::ParenListExpr(), clang::InitListExpr::setInit(), and clang::ShuffleVectorExpr::ShuffleVectorExpr().

bool Expr::isIntegerConstantExpr	(	llvm::APSInt &	Result,
		const ASTContext &	Ctx,
		SourceLocation *	Loc = `nullptr`,
		bool	isEvaluated = `true`
	)		const

isIntegerConstantExpr - Return true if this expression is a valid integer constant expression, and, if so, return its value in Result. If not a valid i-c-e, return false and fill in Loc (if specified) with the location of the invalid expression.

Note: This does not perform the implicit conversions required by C++11 [expr.const]p5.

Definition at line 8996 of file ExprConstant.cpp.

References EvaluateAsInt(), EvaluateCPlusPlus11IntegralConstantExpr(), and clang::ASTContext::getLangOpts().

Referenced by clang::Sema::ActOnOpenMPLinearClause(), clang::Sema::ActOnOpenMPNumThreadsClause(), clang::Sema::ActOnOpenMPScheduleClause(), clang::Sema::ActOnPragmaPack(), clang::Sema::AddAssumeAlignedAttr(), clang::Sema::AddInitializerToDecl(), clang::Sema::BuildCXXNew(), clang::Sema::BuildExtVectorType(), clang::Sema::CheckCaseExpression(), checkFunctionOrMethodParameterIndex(), clang::VarDecl::checkInitIsICE(), checkIntToPointerCast(), CheckOpenMPLoop(), checkUInt32Argument(), clang::Sema::DiagnoseAssignmentEnum(), DiagnoseBadShiftValues(), clang::CodeGen::CodeGenFunction::EmitAArch64BuiltinExpr(), EmitAArch64TblBuiltinExpr(), clang::CodeGen::CodeGenFunction::EmitARMBuiltinExpr(), clang::CodeGen::CodeGenFunction::EmitBuiltinExpr(), clang::CodeGen::CodeGenFunction::EmitCommonNeonBuiltinExpr(), clang::CodeGen::CodeGenFunction::EmitX86BuiltinExpr(), clang::Sema::FinalizeDeclaration(), FitsInto(), clang::StandardConversionSequence::getNarrowingKind(), clang::FunctionProtoType::getNoexceptSpec(), HandleAddressSpaceTypeAttribute(), handleMSP430InterruptAttr(), HandleNeonVectorTypeAttr(), handleSentinelAttr(), HandleVectorSizeAttr(), isNullPointerConstant(), IsStandardConversion(), clang::Sema::SemaBuiltinShuffleVector(), TryOCLSamplerInitialization(), TryOCLZeroEventInitialization(), and clang::Sema::VerifyIntegerConstantExpression().

bool Expr::isIntegerConstantExpr	(	const ASTContext &	Ctx,
		SourceLocation *	Loc = `nullptr`
	)		const

Definition at line 8983 of file ExprConstant.cpp.

References CheckICE(), EvaluateCPlusPlus11IntegralConstantExpr(), and clang::ASTContext::getLangOpts().

bool Expr::isKnownToHaveBooleanValue ( ) const

isKnownToHaveBooleanValue - Return true if this is an integer expression that is known to return 0 or 1. This happens for _Bool/bool expressions but also int expressions which are produced by things like comparisons in C.

Definition at line 112 of file Expr.cpp.

References clang::BO_And, clang::BO_Assign, clang::BO_Comma, clang::BO_EQ, clang::BO_GE, clang::BO_GT, clang::BO_LAnd, clang::BO_LE, clang::BO_LOr, clang::BO_LT, clang::BO_NE, clang::BO_Or, clang::BO_Xor, getType(), IgnoreParens(), clang::Type::isBooleanType(), clang::Type::isIntegralOrEnumerationType(), clang::UO_LNot, and clang::UO_Plus.

Referenced by clang::Sema::ActOnFinishSwitchStmt().

bool clang::Expr::isLValue ( ) const [inline]

isLValue - True if this expression is an "l-value" according to the rules of the current language. C and C++ give somewhat different rules for this concept, but in general, the result of an l-value expression identifies a specific object whereas the result of an r-value expression is a value detached from any specific storage.

C++11 divides the concept of "r-value" into pure r-values ("pr-values") and so-called expiring values ("x-values"), which identify specific objects that can be safely cannibalized for their resources. This is an unfortunate abuse of terminology on the part of the C++ committee. In Clang, when we say "r-value", we generally mean a pr-value.

Definition at line 250 of file Expr.h.

References getValueKind(), and clang::VK_LValue.

Referenced by clang::Sema::ActOnObjCForCollectionStmt(), clang::Sema::ActOnOpenMPAtomicDirective(), AdjustFunctionParmAndArgTypesForDeduction(), CheckAsmLValue(), clang::Sema::DefaultFunctionArrayConversion(), DiagnoseBadConversion(), EvaluateExpressionTrait(), IsGlobalLValue(), clang::ento::ExplodedGraph::isInterestingLValueExpr(), isReferenceToNonConstCapture(), TryClassUnification(), TryConstCast(), TryStaticReferenceDowncast(), and clang::ConversionFixItGenerator::tryToFixConversion().

Expr::isModifiableLvalueResult Expr::isModifiableLvalue	(	ASTContext &	Ctx,
		SourceLocation *	Loc = `nullptr`
	)		const

isModifiableLvalue - C99 6.3.2.1: an lvalue that does not have array type, does not have an incomplete type, does not have a const-qualified type, and if it is a structure or union, does not have any member (including, recursively, any member or element of all contained aggregates or unions) with a const-qualified type.

Parameters:

Loc	[in,out] - A source location which may be filled in with the location of the expression making this a non-modifiable lvalue, if specified.

Definition at line 650 of file ExprClassification.cpp.

Referenced by CheckForModifiableLvalue().

Expr::NullPointerConstantKind Expr::isNullPointerConstant	(	ASTContext &	Ctx,
		NullPointerConstantValueDependence	NPC
	)		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).

isNullPointerConstant - C99 6.3.2.3p3 - Test if this reduces down to a Null pointer constant. The return value can further distinguish the kind of NULL pointer constant that was detected.

Definition at line 3142 of file Expr.cpp.

References EvaluateKnownConstInt(), clang::Type::getAs(), clang::ASTContext::getLangOpts(), clang::Type::getPointeeType(), getType(), clang::APIntStorage::getValue(), clang::QualType::hasQualifiers(), isCXX98IntegralConstantExpr(), clang::Type::isEnumeralType(), isIntegerConstantExpr(), isNullPointerConstant(), isTypeDependent(), isValueDependent(), clang::Type::isVoidType(), NPC_NeverValueDependent, NPC_ValueDependentIsNotNull, NPC_ValueDependentIsNull, NPCK_CXX11_nullptr, NPCK_GNUNull, NPCK_NotNull, NPCK_ZeroExpression, and NPCK_ZeroLiteral.

Referenced by clang::Sema::BuildCXXUuidof(), clang::Sema::BuildInstanceMessage(), clang::Sema::CheckCompareOperands(), checkConditionalNullPointer(), checkFormatStringExpr(), clang::Sema::CheckMemberPointerConversion(), clang::Sema::CheckPointerConversion(), clang::Sema::CheckSingleAssignmentConstraints(), clang::Sema::CheckStaticArrayArgument(), clang::Sema::CheckTransparentUnionArgumentConstraints(), clang::Sema::DiagnoseConditionalForNull(), diagnoseObjCLiteralComparison(), clang::Sema::FindCompositePointerType(), clang::ento::SValBuilder::getConstantVal(), clang::CXXUuidofExpr::getUuidAsStringRef(), isInvalidICRSource(), clang::Sema::IsMemberPointerConversion(), isNullPointerConstant(), isNullPointerConstantForConversion(), isNullPointerValueTemplateArgument(), clang::ASTContext::isSentinelNullExpr(), and clang::Sema::PrepareScalarCast().

bool Expr::isOBJCGCCandidate ( ASTContext & Ctx ) const

isOBJCGCCandidate - Check if an expression is objc gc'able. returns true, if it is; false otherwise.

isOBJCGCCandidate - Return true if this expression may be used in a read/ write barrier.

Definition at line 2324 of file Expr.cpp.

References clang::MemberExpr::getBase(), clang::ASTContext::getObjCGCAttrKind(), clang::Stmt::getStmtClass(), IgnoreParens(), isOBJCGCCandidate(), clang::Type::isPointerType(), and clang::Qualifiers::Weak.

Referenced by clang::CodeGen::CodeGenFunction::EmitArraySubscriptExpr(), clang::CodeGen::CodeGenFunction::EmitUnaryOpLValue(), and isOBJCGCCandidate().

bool Expr::isObjCSelfExpr ( ) const

Check if this expression is the ObjC 'self' implicit parameter.

Definition at line 3270 of file Expr.cpp.

References clang::DeclRefExpr::getDecl(), clang::Decl::getDeclContext(), clang::ObjCMethodDecl::getSelfDecl(), and IgnoreParenImpCasts().

bool clang::Expr::isOrdinaryOrBitFieldObject ( ) const [inline]

Definition at line 413 of file Expr.h.

References getObjectKind(), clang::OK_BitField, and clang::OK_Ordinary.

Referenced by clang::Sema::ActOnConditionalOp(), and clang::Sema::CXXCheckConditionalOperands().

bool Expr::isPotentialConstantExpr	(	const FunctionDecl *	FD,
		SmallVectorImpl< PartialDiagnosticAt > &	Diags
	)		`[static]`

isPotentialConstantExpr - Return true if this function's definition might be usable in a constant expression in C++11, if it were marked constexpr. Return false if the function can never produce a constant expression, along with diagnostics describing why not.

Definition at line 9060 of file ExprConstant.cpp.

References clang::Expr::EvalStatus::Diag, clang::Decl::getASTContext(), clang::FunctionDecl::getBody(), clang::Decl::getLocation(), clang::DeclContext::getParent(), HandleConstructorCall(), HandleFunctionCall(), and clang::DeclContext::isDependentContext().

Referenced by clang::Sema::CheckConstexprFunctionBody().

bool Expr::isPotentialConstantExprUnevaluated	(	Expr *	E,
		const FunctionDecl *	FD,
		SmallVectorImpl< PartialDiagnosticAt > &	Diags
	)		`[static]`

isPotentialConstantExprUnevaluted - Return true if this expression might be usable in a constant expression in C++11 in an unevaluated context, if it were in function FD marked constexpr. Return false if the function can never produce a constant expression, along with diagnostics describing why not.

Definition at line 9101 of file ExprConstant.cpp.

References clang::Expr::EvalStatus::Diag, Evaluate(), EvaluateArgs(), and clang::Decl::getASTContext().

Referenced by handleEnableIfAttr(), and instantiateDependentEnableIfAttr().

bool clang::Expr::isRValue ( ) const [inline]

Definition at line 251 of file Expr.h.

References getValueKind(), and clang::VK_RValue.

Referenced by clang::Sema::BuildArrayType(), BuildMemberExpr(), CheckICE(), checkIndirectCopyRestoreSource(), CheckLiteralType(), ClassifyInternal(), clang::CodeGen::CodeGenFunction::EmitIgnoredExpr(), emitPseudoObjectExpr(), EvaluateArray(), EvaluateAsBooleanCondition(), EvaluateAsInitializer(), EvaluateAtomic(), EvaluateComplex(), EvaluateExpressionTrait(), EvaluateFloat(), EvaluateInPlace(), EvaluateIntegerOrLValue(), EvaluateMemberPointer(), EvaluatePointer(), EvaluateRecord(), EvaluateTemporary(), EvaluateVector(), EvaluateVoid(), EvalVal(), FastEvaluateAsRValue(), clang::Sema::IgnoredValueConversions(), clang::Sema::ImpCastExprToType(), clang::Sema::LookupInlineAsmIdentifier(), clang::Sema::MaybeBindToTemporary(), maybeExtendBlockObject(), clang::InitializationSequence::Perform(), and TryConstCast().

bool Expr::isTemporaryObject	(	ASTContext &	Ctx,
		const CXXRecordDecl *	TempTy
	)		const

Determine whether the result of this expression is a temporary object of the given class type.

isTemporaryObject - Determines if this expression produces a temporary of the given class type.

Definition at line 2618 of file Expr.cpp.

References clang::CK_DerivedToBase, clang::CK_UncheckedDerivedToBase, Classify(), getType(), clang::ASTContext::getTypeDeclType(), clang::ASTContext::hasSameUnqualifiedType(), clang::Expr::Classification::isPRValue(), and skipTemporaryBindingsNoOpCastsAndParens().

Referenced by clang::Sema::BuildCXXConstructExpr(), CopyObject(), and clang::CodeGen::CodeGenFunction::EmitCXXConstructExpr().

bool clang::Expr::isTypeDependent ( ) const [inline]

isTypeDependent - Determines whether this expression is type-dependent (C++ [temp.dep.expr]), which means that its type could change from one template instantiation to the next. For example, the expressions "x" and "x + y" are type-dependent in the following code, but "y" is not type-dependent:

 template<typename T>
 void add(T x, int y) {
   x + y;
 }

Definition at line 166 of file Expr.h.

References clang::Stmt::ExprBits.

bool Expr::isUnusedResultAWarning	(	const Expr *&	WarnExpr,
		SourceLocation &	Loc,
		SourceRange &	R1,
		SourceRange &	R2,
		ASTContext &	Ctx
	)		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.

isUnusedResultAWarning - Return true if this immediate expression should be warned about if the result is unused. If so, fill in expr, location, and ranges with expr to warn on and source locations/ranges appropriate for a warning.

Definition at line 1999 of file Expr.cpp.

References clang::BO_Comma, clang::BO_LAnd, clang::BO_LOr, clang::CompoundStmt::body_back(), clang::CompoundStmt::body_empty(), clang::CK_ConstructorConversion, clang::CK_LValueToRValue, clang::CK_ToVoid, clang::CallExpr::getArg(), clang::Type::getAsCXXRecordDecl(), clang::CallExpr::getCallee(), clang::CallExpr::getCalleeDecl(), clang::CallExpr::getCallReturnType(), clang::ASTContext::getCanonicalType(), clang::CastExpr::getCastKind(), clang::DeclRefExpr::getDecl(), getExprLoc(), clang::ASTContext::getLangOpts(), clang::BinaryOperator::getLHS(), clang::ConditionalOperator::getLHS(), clang::Stmt::getLocEnd(), clang::Stmt::getLocStart(), clang::CStyleCastExpr::getLParenLoc(), clang::ObjCMessageExpr::getMethodDecl(), clang::ObjCMessageExpr::getMethodFamily(), clang::CallExpr::getNumArgs(), clang::UnaryOperator::getOpcode(), clang::BinaryOperator::getOpcode(), clang::CXXOperatorCallExpr::getOperator(), clang::CXXOperatorCallExpr::getOperatorLoc(), clang::UnaryOperator::getOperatorLoc(), clang::BinaryOperator::getOperatorLoc(), clang::ObjCMessageExpr::getReceiverType(), clang::BinaryOperator::getRHS(), clang::ConditionalOperator::getRHS(), clang::CXXOperatorCallExpr::getSourceRange(), clang::Stmt::getSourceRange(), clang::Stmt::getStmtClass(), clang::UnaryOperator::getSubExpr(), clang::CastExpr::getSubExpr(), clang::PseudoObjectExpr::getSyntacticForm(), getType(), IgnoreParens(), clang::BinaryOperator::isAssignmentOp(), isGLValue(), clang::ObjCMessageExpr::isInstanceMessage(), clang::Type::isObjCIdType(), clang::Type::isReferenceType(), isTypeDependent(), isUnusedResultAWarning(), clang::Type::isVoidType(), clang::QualType::isVolatileQualified(), clang::OMF_init, clang::UO_AddrOf, clang::UO_Deref, clang::UO_Extension, clang::UO_Imag, clang::UO_LNot, clang::UO_Minus, clang::UO_Not, clang::UO_Plus, clang::UO_PostDec, clang::UO_PostInc, clang::UO_PreDec, clang::UO_PreInc, and clang::UO_Real.

Referenced by isUnusedResultAWarning().

bool clang::Expr::isValueDependent ( ) const [inline]

isValueDependent - Determines whether this expression is value-dependent (C++ [temp.dep.constexpr]). For example, the array bound of "Chars" in the following example is value-dependent.

 template<int Size, char (&Chars)[Size]> struct meta_string;

Definition at line 146 of file Expr.h.

References clang::Stmt::ExprBits.

Referenced by clang::Sema::ActOnCaseStmt(), clang::Sema::ActOnChooseExpr(), clang::Sema::ActOnDesignatedInitializer(), clang::Sema::ActOnFinishSwitchStmt(), clang::Sema::ActOnOpenMPFinalClause(), clang::Sema::ActOnOpenMPIfClause(), clang::Sema::ActOnOpenMPLinearClause(), clang::Sema::ActOnOpenMPNumThreadsClause(), clang::Sema::ActOnOpenMPScheduleClause(), clang::Sema::ActOnPragmaPack(), clang::Sema::AddAlignedAttr(), clang::Sema::AddAlignValueAttr(), clang::Sema::AddAssumeAlignedAttr(), clang::Sema::AddInitializerToDecl(), clang::AtomicExpr::AtomicExpr(), clang::Sema::BuildArrayType(), clang::Sema::BuildBuiltinOffsetOf(), clang::Sema::BuildCompoundLiteralExpr(), clang::Sema::BuildCXXNamedCast(), clang::Sema::BuildCXXNew(), clang::Sema::BuildExtVectorType(), clang::Sema::BuildStaticAssertDeclaration(), clang::CallExpr::CallExpr(), clang::Sema::canThrow(), clang::Sema::CheckCaseExpression(), clang::Sema::CheckCompleteVariableDeclaration(), clang::Sema::CheckEnumConstant(), clang::Sema::checkExceptionSpecification(), checkFormatStringExpr(), checkFunctionOrMethodParameterIndex(), CheckICE(), clang::VarDecl::checkInitIsICE(), clang::Sema::CheckLogicalOperands(), clang::Sema::CheckLoopHintExpr(), clang::Sema::CheckMultiplyDivideOperands(), CheckNonNullExpr(), clang::Sema::CheckRemainderOperands(), clang::Sema::CheckTemplateArgument(), CheckTemplateArgumentAddressOfObjectOrFunction(), CheckTemplateArgumentPointerToMember(), checkUInt32Argument(), clang::CXXConstructExpr::CXXConstructExpr(), DeduceNonTypeTemplateArgument(), clang::Sema::DiagnoseAssignmentEnum(), DiagnoseBadShiftValues(), clang::Sema::DiagnoseSentinelCalls(), EvaluateDecl(), EvaluateInPlace(), EvaluatesAsFalse(), EvaluatesAsTrue(), clang::VarDecl::evaluateValue(), evaluateVarDeclInit(), clang::ASTContext::getDependentSizedArrayType(), clang::FunctionProtoType::getNoexceptSpec(), clang::SizeOfPackExpr::getPackLength(), clang::TypeTraitExpr::getValue(), HandleAddressSpaceTypeAttribute(), handleEnableIfAttr(), HandleNeonVectorTypeAttr(), handleSentinelAttr(), HandleVectorSizeAttr(), clang::InitListExpr::InitListExpr(), instantiateDependentEnableIfAttr(), clang::ChooseExpr::isConditionDependent(), isNullPointerConstant(), isNullPointerConstantForConversion(), isNullPointerValueTemplateArgument(), clang::ASTContext::isPromotableBitField(), IsVariableNonDependentAndAConstantExpression(), clang::ParenListExpr::ParenListExpr(), clang::InitializationSequence::Perform(), clang::Sema::SemaBuiltinShuffleVector(), clang::InitListExpr::setInit(), clang::ShuffleVectorExpr::ShuffleVectorExpr(), clang::TreeTransform< Derived >::TransformExceptionSpec(), VariableCanNeverBeAConstantExpression(), clang::Sema::VerifyBitField(), and clang::EvaluatedExprVisitor< ImplClass >::VisitChooseExpr().

bool clang::Expr::isXValue ( ) const [inline]

Definition at line 252 of file Expr.h.

References getValueKind(), and clang::VK_XValue.

Referenced by tryEmitARCRetainLoadOfScalar().

bool clang::Expr::refersToBitField ( ) const [inline]

Returns true if this expression is a gl-value that potentially refers to a bit-field.

In C++, whether a gl-value refers to a bitfield is essentially an aspect of the value-kind type system.

Definition at line 434 of file Expr.h.

References getObjectKind(), and clang::OK_BitField.

Referenced by convertQualifiersAndValueKindIfNecessary(), clang::Sema::CreateUnaryExprOrTypeTraitExpr(), clang::InitializationSequence::Perform(), and TryConstCast().

bool Expr::refersToVectorElement ( ) const

Returns whether this expression refers to a vector element.

Definition at line 3329 of file Expr.cpp.

References clang::CK_NoOp, getType(), IgnoreParens(), clang::Type::isVectorType(), and clang::VK_RValue.

Referenced by convertQualifiersAndValueKindIfNecessary(), and clang::InitializationSequence::Perform().

void clang::Expr::setContainsUnexpandedParameterPack ( bool PP = true ) [inline]

Set the bit that describes whether this expression contains an unexpanded parameter pack.

Definition at line 221 of file Expr.h.

References clang::Stmt::ExprBits.

void clang::Expr::setInstantiationDependent ( bool ID ) [inline]

Set whether this expression is instantiation-dependent or not.

Definition at line 197 of file Expr.h.

References clang::Stmt::ExprBits.

Referenced by clang::MemberExpr::Create().

void clang::Expr::setObjectKind ( ExprObjectKind Cat ) [inline]

setObjectKind - Set the object kind produced by this expression.

Definition at line 422 of file Expr.h.

References clang::Stmt::ExprBits.

Referenced by clang::Sema::BuildDeclRefExpr().

void clang::Expr::setType ( QualType t ) [inline]

Definition at line 126 of file Expr.h.

References clang::QualType::isNull(), and clang::Type::isReferenceType().

Referenced by clang::Sema::ActOnInitList(), clang::Sema::BuildCXXForRangeStmt(), clang::Sema::BuildResolvedCallExpr(), clang::Sema::BuildVectorLiteral(), ConstructTransparentUnion(), Expr(), clang::OverloadExpr::OverloadExpr(), clang::InitializationSequence::Perform(), clang::TreeTransform< Derived >::RebuildInitList(), clang::Sema::RequireCompleteExprType(), SemaBuiltinAddressof(), SemaBuiltinAnnotation(), and updateStringLiteralType().

void clang::Expr::setTypeDependent ( bool TD ) [inline]

Set whether this expression is type-dependent or not.

Definition at line 169 of file Expr.h.

References clang::Stmt::ExprBits.

Referenced by clang::Sema::buildOverloadedCallSet(), and clang::MemberExpr::Create().

void clang::Expr::setValueDependent ( bool VD ) [inline]

Set whether this expression is value-dependent or not.

Definition at line 149 of file Expr.h.

References clang::Stmt::ExprBits.

Referenced by clang::MemberExpr::Create().

void clang::Expr::setValueKind ( ExprValueKind Cat ) [inline]

setValueKind - Set the value kind produced by this expression.

Definition at line 419 of file Expr.h.

References clang::Stmt::ExprBits.

Referenced by clang::Sema::BuildResolvedCallExpr(), and clang::InitializationSequence::Perform().

const Expr * Expr::skipRValueSubobjectAdjustments	(	SmallVectorImpl< const Expr * > &	CommaLHS,
		SmallVectorImpl< SubobjectAdjustment > &	Adjustments
	)		const

Walk outwards from an expression we want to bind a reference to and find the expression whose lifetime needs to be extended. Record the LHSs of comma expressions and adjustments needed along the path.

Definition at line 54 of file Expr.cpp.

References clang::BO_Comma, clang::CK_DerivedToBase, clang::CK_NoOp, clang::CK_UncheckedDerivedToBase, clang::Type::getAs(), getType(), IgnoreParens(), and clang::Type::isRecordType().

Referenced by clang::CodeGen::CodeGenFunction::EmitMaterializeTemporaryExpr(), performLifetimeExtension(), and performReferenceExtension().

The documentation for this class was generated from the following files:

Classes

Public Types

Public Member Functions

Static Public Member Functions

Protected Member Functions

Detailed Description

Member Enumeration Documentation

Constructor & Destructor Documentation

Member Function Documentation