clang  3.7.0
Public Member Functions | Static Public Member Functions | Friends | List of all members
clang::DependentScopeDeclRefExpr Class Reference

A qualified reference to a name whose declaration cannot yet be resolved. More...

#include <ExprCXX.h>

Inheritance diagram for clang::DependentScopeDeclRefExpr:
[legend]
Collaboration diagram for clang::DependentScopeDeclRefExpr:
[legend]

Public Member Functions

const DeclarationNameInfogetNameInfo () const
 Retrieve the name that this expression refers to. More...
 
DeclarationName getDeclName () const
 Retrieve the name that this expression refers to. More...
 
SourceLocation getLocation () const
 Retrieve the location of the name within the expression. More...
 
NestedNameSpecifierLoc getQualifierLoc () const
 Retrieve the nested-name-specifier that qualifies the name, with source location information. More...
 
NestedNameSpecifiergetQualifier () const
 Retrieve the nested-name-specifier that qualifies this declaration. More...
 
SourceLocation getTemplateKeywordLoc () const
 Retrieve the location of the template keyword preceding this name, if any. More...
 
SourceLocation getLAngleLoc () const
 Retrieve the location of the left angle bracket starting the explicit template argument list following the name, if any. More...
 
SourceLocation getRAngleLoc () const
 Retrieve the location of the right angle bracket ending the explicit template argument list following the name, if any. More...
 
bool hasTemplateKeyword () const
 Determines whether the name was preceded by the template keyword. More...
 
bool hasExplicitTemplateArgs () const
 Determines whether this lookup had explicit template arguments. More...
 
ASTTemplateArgumentListInfogetExplicitTemplateArgs ()
 
const ASTTemplateArgumentListInfogetExplicitTemplateArgs () const
 Gets a reference to the explicit template argument list. More...
 
const ASTTemplateArgumentListInfogetOptionalExplicitTemplateArgs () const
 Retrieves the optional explicit template arguments. More...
 
void copyTemplateArgumentsInto (TemplateArgumentListInfo &List) const
 Copies the template arguments (if present) into the given structure. More...
 
TemplateArgumentLoc const * getTemplateArgs () const
 
unsigned getNumTemplateArgs () const
 
SourceLocation getLocStart () const LLVM_READONLY
 
SourceLocation getLocEnd () const LLVM_READONLY
 
child_range children ()
 
- Public Member Functions inherited from clang::Expr
QualType getType () const
 
void setType (QualType t)
 
bool isValueDependent () const
 
void setValueDependent (bool VD)
 Set whether this expression is value-dependent or not. More...
 
bool isTypeDependent () const
 
void setTypeDependent (bool TD)
 Set whether this expression is type-dependent or not. More...
 
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. More...
 
void setInstantiationDependent (bool ID)
 Set whether this expression is instantiation-dependent or not. More...
 
bool containsUnexpandedParameterPack () const
 Whether this expression contains an unexpanded parameter pack (for C++11 variadic templates). More...
 
void setContainsUnexpandedParameterPack (bool PP=true)
 Set the bit that describes whether this expression contains an unexpanded parameter pack. More...
 
SourceLocation getExprLoc () const LLVM_READONLY
 
bool isUnusedResultAWarning (const Expr *&WarnExpr, SourceLocation &Loc, SourceRange &R1, SourceRange &R2, ASTContext &Ctx) const
 
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. More...
 
isModifiableLvalueResult isModifiableLvalue (ASTContext &Ctx, SourceLocation *Loc=nullptr) const
 
Classification Classify (ASTContext &Ctx) const
 Classify - Classify this expression according to the C++11 expression taxonomy. More...
 
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. More...
 
ExprValueKind getValueKind () const
 getValueKind - The value kind that this expression produces. More...
 
ExprObjectKind getObjectKind () const
 
bool isOrdinaryOrBitFieldObject () const
 
void setValueKind (ExprValueKind Cat)
 setValueKind - Set the value kind produced by this expression. More...
 
void setObjectKind (ExprObjectKind Cat)
 setObjectKind - Set the object kind produced by this expression. More...
 
bool refersToBitField () const
 Returns true if this expression is a gl-value that potentially refers to a bit-field. More...
 
FieldDeclgetSourceBitField ()
 If this expression refers to a bit-field, retrieve the declaration of that bit-field. More...
 
const FieldDeclgetSourceBitField () const
 
const ObjCPropertyRefExprgetObjCProperty () const
 If this expression is an l-value for an Objective C property, find the underlying property reference expression. More...
 
bool isObjCSelfExpr () const
 Check if this expression is the ObjC 'self' implicit parameter. More...
 
bool refersToVectorElement () const
 Returns whether this expression refers to a vector element. More...
 
bool hasPlaceholderType () const
 Returns whether this expression has a placeholder type. More...
 
bool hasPlaceholderType (BuiltinType::Kind K) const
 Returns whether this expression has a specific placeholder type. More...
 
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
 
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, bool IncludePossibleEffects=true) const
 
bool hasNonTrivialCall (const ASTContext &Ctx) const
 Determine whether this expression involves a call to any function that is not trivial. More...
 
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
 
bool isOBJCGCCandidate (ASTContext &Ctx) const
 
bool isBoundMemberFunction (ASTContext &Ctx) const
 Returns true if this expression is a bound member function. More...
 
ExprIgnoreImpCasts () LLVM_READONLY
 
ExprIgnoreImplicit () LLVM_READONLY
 
const ExprIgnoreImplicit () const LLVM_READONLY
 
ExprIgnoreParens () LLVM_READONLY
 
ExprIgnoreParenCasts () LLVM_READONLY
 
ExprIgnoreCasts () LLVM_READONLY
 Ignore casts. Strip off any CastExprs, returning their operand. More...
 
ExprIgnoreParenImpCasts () LLVM_READONLY
 
ExprIgnoreConversionOperator () LLVM_READONLY
 
const ExprIgnoreConversionOperator () const LLVM_READONLY
 
const ExprIgnoreParenImpCasts () const LLVM_READONLY
 
ExprIgnoreParenLValueCasts () LLVM_READONLY
 
const ExprIgnoreParenLValueCasts () const LLVM_READONLY
 
ExprIgnoreParenNoopCasts (ASTContext &Ctx) LLVM_READONLY
 
ExprignoreParenBaseCasts () LLVM_READONLY
 Ignore parentheses and derived-to-base casts. More...
 
const ExprignoreParenBaseCasts () const LLVM_READONLY
 
bool isDefaultArgument () const
 Determine whether this expression is a default function argument. More...
 
bool isTemporaryObject (ASTContext &Ctx, const CXXRecordDecl *TempTy) const
 Determine whether the result of this expression is a temporary object of the given class type. More...
 
bool isImplicitCXXThis () const
 Whether this expression is an implicit reference to 'this' in C++. More...
 
const ExprIgnoreImpCasts () const LLVM_READONLY
 
const ExprIgnoreParens () const LLVM_READONLY
 
const ExprIgnoreParenCasts () const LLVM_READONLY
 
const ExprIgnoreCasts () const LLVM_READONLY
 Strip off casts, but keep parentheses. More...
 
const ExprIgnoreParenNoopCasts (ASTContext &Ctx) const LLVM_READONLY
 
const CXXRecordDeclgetBestDynamicClassType () 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. More...
 
const ExprskipRValueSubobjectAdjustments (SmallVectorImpl< const Expr * > &CommaLHS, SmallVectorImpl< SubobjectAdjustment > &Adjustments) const
 

Static Public Member Functions

static DependentScopeDeclRefExprCreate (const ASTContext &C, NestedNameSpecifierLoc QualifierLoc, SourceLocation TemplateKWLoc, const DeclarationNameInfo &NameInfo, const TemplateArgumentListInfo *TemplateArgs)
 
static DependentScopeDeclRefExprCreateEmpty (const ASTContext &C, bool HasTemplateKWAndArgsInfo, unsigned NumTemplateArgs)
 
static bool classof (const Stmt *T)
 
- Static Public Member Functions inherited from clang::Expr
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. More...
 
static bool hasAnyTypeDependentArguments (ArrayRef< Expr * > Exprs)
 
static bool classof (const Stmt *T)
 

Friends

class ASTStmtReader
 
class ASTStmtWriter
 

Additional Inherited Members

- Public Types inherited from clang::Expr
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_ConstAddrSpace, 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...
 
- Protected Member Functions inherited from clang::Expr
 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. More...
 

Detailed Description

A qualified reference to a name whose declaration cannot yet be resolved.

DependentScopeDeclRefExpr is similar to DeclRefExpr in that it expresses a reference to a declaration such as X<T>::value. The difference, however, is that an DependentScopeDeclRefExpr node is used only within C++ templates when the qualification (e.g., X<T>::) refers to a dependent type. In this case, X<T>::value cannot resolve to a declaration because the declaration will differ from one instantiation of X<T> to the next. Therefore, DependentScopeDeclRefExpr keeps track of the qualifier (X<T>::) and the name of the entity being referenced ("value"). Such expressions will instantiate to a DeclRefExpr once the declaration can be found.

Definition at line 2609 of file ExprCXX.h.

Member Function Documentation

child_range clang::DependentScopeDeclRefExpr::children ( )
inline

Definition at line 2750 of file ExprCXX.h.

static bool clang::DependentScopeDeclRefExpr::classof ( const Stmt T)
inlinestatic

Definition at line 2746 of file ExprCXX.h.

void clang::DependentScopeDeclRefExpr::copyTemplateArgumentsInto ( TemplateArgumentListInfo List) const
inline

Copies the template arguments (if present) into the given structure.

Definition at line 2723 of file ExprCXX.h.

References clang::ASTTemplateArgumentListInfo::copyInto(), and getExplicitTemplateArgs().

DependentScopeDeclRefExpr * DependentScopeDeclRefExpr::Create ( const ASTContext C,
NestedNameSpecifierLoc  QualifierLoc,
SourceLocation  TemplateKWLoc,
const DeclarationNameInfo NameInfo,
const TemplateArgumentListInfo TemplateArgs 
)
static
DependentScopeDeclRefExpr * DependentScopeDeclRefExpr::CreateEmpty ( const ASTContext C,
bool  HasTemplateKWAndArgsInfo,
unsigned  NumTemplateArgs 
)
static
DeclarationName clang::DependentScopeDeclRefExpr::getDeclName ( ) const
inline

Retrieve the name that this expression refers to.

Definition at line 2653 of file ExprCXX.h.

References clang::DeclarationNameInfo::getName().

ASTTemplateArgumentListInfo& clang::DependentScopeDeclRefExpr::getExplicitTemplateArgs ( )
inline
const ASTTemplateArgumentListInfo& clang::DependentScopeDeclRefExpr::getExplicitTemplateArgs ( ) const
inline

Gets a reference to the explicit template argument list.

Definition at line 2707 of file ExprCXX.h.

References hasExplicitTemplateArgs().

SourceLocation clang::DependentScopeDeclRefExpr::getLAngleLoc ( ) const
inline

Retrieve the location of the left angle bracket starting the explicit template argument list following the name, if any.

Definition at line 2679 of file ExprCXX.h.

References clang::ASTTemplateArgumentListInfo::LAngleLoc.

Referenced by hasExplicitTemplateArgs().

SourceLocation clang::DependentScopeDeclRefExpr::getLocation ( ) const
inline

Retrieve the location of the name within the expression.

For example, in "X<T>::value" this is the location of "value".

Definition at line 2658 of file ExprCXX.h.

References clang::DeclarationNameInfo::getLoc().

Referenced by getLocEnd().

SourceLocation clang::DependentScopeDeclRefExpr::getLocEnd ( ) const
inline

Definition at line 2740 of file ExprCXX.h.

References getLocation(), getRAngleLoc(), and hasExplicitTemplateArgs().

SourceLocation clang::DependentScopeDeclRefExpr::getLocStart ( ) const
inline

Note: getLocStart() is the start of the whole DependentScopeDeclRefExpr, and differs from getLocation().getStart().

Definition at line 2737 of file ExprCXX.h.

References clang::NestedNameSpecifierLoc::getBeginLoc().

const DeclarationNameInfo& clang::DependentScopeDeclRefExpr::getNameInfo ( ) const
inline

Retrieve the name that this expression refers to.

Definition at line 2650 of file ExprCXX.h.

unsigned clang::DependentScopeDeclRefExpr::getNumTemplateArgs ( ) const
inline
const ASTTemplateArgumentListInfo* clang::DependentScopeDeclRefExpr::getOptionalExplicitTemplateArgs ( ) const
inline

Retrieves the optional explicit template arguments.

This points to the same data as getExplicitTemplateArgs(), but returns null if there are no explicit template arguments.

Definition at line 2716 of file ExprCXX.h.

References getExplicitTemplateArgs(), and hasExplicitTemplateArgs().

NestedNameSpecifier* clang::DependentScopeDeclRefExpr::getQualifier ( ) const
inline

Retrieve the nested-name-specifier that qualifies this declaration.

Definition at line 2666 of file ExprCXX.h.

References clang::NestedNameSpecifierLoc::getNestedNameSpecifier().

NestedNameSpecifierLoc clang::DependentScopeDeclRefExpr::getQualifierLoc ( ) const
inline

Retrieve the nested-name-specifier that qualifies the name, with source location information.

Definition at line 2662 of file ExprCXX.h.

SourceLocation clang::DependentScopeDeclRefExpr::getRAngleLoc ( ) const
inline

Retrieve the location of the right angle bracket ending the explicit template argument list following the name, if any.

Definition at line 2686 of file ExprCXX.h.

References clang::ASTTemplateArgumentListInfo::RAngleLoc.

Referenced by getLocEnd().

TemplateArgumentLoc const* clang::DependentScopeDeclRefExpr::getTemplateArgs ( ) const
inline
SourceLocation clang::DependentScopeDeclRefExpr::getTemplateKeywordLoc ( ) const
inline

Retrieve the location of the template keyword preceding this name, if any.

Definition at line 2672 of file ExprCXX.h.

References clang::ASTTemplateKWAndArgsInfo::getTemplateKeywordLoc().

Referenced by hasTemplateKeyword().

bool clang::DependentScopeDeclRefExpr::hasExplicitTemplateArgs ( ) const
inline

Determines whether this lookup had explicit template arguments.

Definition at line 2695 of file ExprCXX.h.

References getLAngleLoc(), and clang::SourceLocation::isValid().

Referenced by getExplicitTemplateArgs(), getLocEnd(), and getOptionalExplicitTemplateArgs().

bool clang::DependentScopeDeclRefExpr::hasTemplateKeyword ( ) const
inline

Determines whether the name was preceded by the template keyword.

Definition at line 2692 of file ExprCXX.h.

References getTemplateKeywordLoc(), and clang::SourceLocation::isValid().

Friends And Related Function Documentation

friend class ASTStmtReader
friend

Definition at line 2752 of file ExprCXX.h.

friend class ASTStmtWriter
friend

Definition at line 2753 of file ExprCXX.h.


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