clang 8.0.0

Public Types | Public Member Functions | Static Public Member Functions | Public Attributes | Friends | List of all members
clang::PseudoObjectExpr Class Referencefinal

PseudoObjectExpr - An expression which accesses a pseudo-object l-value. More...

`#include "clang/AST/Expr.h"`

Inheritance diagram for clang::PseudoObjectExpr:
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Collaboration diagram for clang::PseudoObjectExpr:
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## Public Types
enum | : unsigned { NoResult = ~0U }
| NoResult - A value for the result index indicating that there is no semantic result. More...
typedef Expr *const * | semantics_iterator
typedef const Expr *const * | const_semantics_iterator
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_ConstQualifiedField, MLV_ConstAddrSpace, MLV_ArrayType, MLV_NoSetterProperty, MLV_MemberFunction, MLV_SubObjCPropertySetting, MLV_InvalidMessageExpression, MLV_ClassTemporary, MLV_ArrayTemporary }
enum | SideEffectsKind { SE_NoSideEffects, SE_AllowUndefinedBehavior, SE_AllowSideEffects }
enum | ConstExprUsage { EvaluateForCodeGen, EvaluateForMangling }
| Indicates how the constant expression will be used. More...
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 Types inherited from clang::Stmt
enum | StmtClass { NoStmtClass = 0 }
using | child_iterator = StmtIterator
| Child Iterators: All subclasses must implement 'children' to permit easy iteration over the substatements/subexpessions of an AST node. More...
using | const_child_iterator = ConstStmtIterator
using | child_range = llvm::iterator_range< child_iterator >
using | const_child_range = llvm::iterator_range< const_child_iterator >

## Public Member Functions
Expr * | getSyntacticForm ()
| Return the syntactic form of this expression, i.e. More...
const Expr * | getSyntacticForm () const
unsigned | getResultExprIndex () const
| Return the index of the result-bearing expression into the semantics expressions, or PseudoObjectExpr::NoResult if there is none. More...
Expr * | getResultExpr ()
| Return the result-bearing expression, or null if there is none. More...
const Expr * | getResultExpr () const
unsigned | getNumSemanticExprs () const
semantics_iterator | semantics_begin ()
const_semantics_iterator | semantics_begin () const
semantics_iterator | semantics_end ()
const_semantics_iterator | semantics_end () const
llvm::iterator_range< semantics_iterator > | semantics ()
llvm::iterator_range< const_semantics_iterator > | semantics () const
Expr * | getSemanticExpr (unsigned index)
const Expr * | getSemanticExpr (unsigned index) const
SourceLocation | getExprLoc () const LLVM_READONLY
SourceLocation | getBeginLoc () const LLVM_READONLY
SourceLocation | getEndLoc () const LLVM_READONLY
child_range | children ()
const_child_range | children () const
Public Member Functions inherited from clang::Expr
QualType | getType () const
void | setType (QualType t)
bool | isValueDependent () const
| isValueDependent - Determines whether this expression is value-dependent (C++ [temp.dep.constexpr]). More...
void | setValueDependent (bool VD)
| Set whether this expression is value-dependent or not. More...
bool | isTypeDependent () const
| 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. More...
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
| getExprLoc - Return the preferred location for the arrow when diagnosing a problem with a generic expression. More...
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. More...
bool | isLValue () const
| isLValue - True if this expression is an "l-value" according to the rules of the current language. More...
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
| 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. More...
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
| getObjectKind - The object kind that this expression produces. More...
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...
FieldDecl * | getSourceBitField ()
| If this expression refers to a bit-field, retrieve the declaration of that bit-field. More...
const FieldDecl * | getSourceBitField () const
Decl * | getReferencedDeclOfCallee ()
const Decl * | getReferencedDeclOfCallee () const
const ObjCPropertyRefExpr * | getObjCProperty () 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 | refersToGlobalRegisterVar () const
| Returns whether this expression refers to a global register variable. 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
| isKnownToHaveBooleanValue - Return true if this is an integer expression that is known to return 0 or 1. More...
bool | 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. More...
bool | isIntegerConstantExpr (const ASTContext &Ctx, SourceLocation *Loc=nullptr) const
bool | isCXX98IntegralConstantExpr (const ASTContext &Ctx) const
| isCXX98IntegralConstantExpr - Return true if this expression is an integral constant expression in C++98. More...
bool | isCXX11ConstantExpr (const ASTContext &Ctx, APValue *Result=nullptr, SourceLocation *Loc=nullptr) const
| isCXX11ConstantExpr - Return true if this expression is a constant expression in C++11. More...
bool | 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. More...
bool | EvaluateAsRValue (EvalResult &Result, const ASTContext &Ctx, bool InConstantContext=false) const
| 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. More...
bool | EvaluateAsBooleanCondition (bool &Result, const ASTContext &Ctx) const
| EvaluateAsBooleanCondition - Return true if this is a constant which we can fold and convert to a boolean condition using any crazy technique that we want to, even if the expression has side-effects. More...
bool | EvaluateAsInt (EvalResult &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. More...
bool | EvaluateAsFloat (llvm::APFloat &Result, const ASTContext &Ctx, SideEffectsKind AllowSideEffects=SE_NoSideEffects) const
| EvaluateAsFloat - Return true if this is a constant which we can fold and convert to a floating point value, using any crazy technique that we want to. More...
bool | isEvaluatable (const ASTContext &Ctx, SideEffectsKind AllowSideEffects=SE_NoSideEffects) const
| isEvaluatable - Call EvaluateAsRValue to see if this expression can be constant folded without side-effects, but discard the result. More...
bool | HasSideEffects (const ASTContext &Ctx, bool IncludePossibleEffects=true) const
| HasSideEffects - This routine returns true for all those expressions which have any effect other than producing a value. More...
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
| EvaluateKnownConstInt - Call EvaluateAsRValue and return the folded integer. More...
llvm::APSInt | EvaluateKnownConstIntCheckOverflow (const ASTContext &Ctx, SmallVectorImpl< PartialDiagnosticAt > *Diag=nullptr) const
void | EvaluateForOverflow (const ASTContext &Ctx) const
bool | 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. More...
bool | 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. More...
bool | EvaluateWithSubstitution (APValue &Value, ASTContext &Ctx, const FunctionDecl *Callee, ArrayRef< const Expr *> Args, const Expr *This=nullptr) 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. More...
bool | EvaluateAsConstantExpr (EvalResult &Result, ConstExprUsage Usage, const ASTContext &Ctx) const
| Evaluate an expression that is required to be a constant expression. More...
bool | tryEvaluateObjectSize (uint64_t &Result, ASTContext &Ctx, unsigned Type) const
| If the current Expr is a pointer, this will try to statically determine the number of bytes available where the pointer is pointing. More...
NullPointerConstantKind | isNullPointerConstant (ASTContext &Ctx, NullPointerConstantValueDependence NPC) const
| isNullPointerConstant - C99 6.3.2.3p3 - Test if this reduces down to a Null pointer constant. More...
bool | isOBJCGCCandidate (ASTContext &Ctx) const
| isOBJCGCCandidate - Return true if this expression may be used in a read/ write barrier. More...
bool | isBoundMemberFunction (ASTContext &Ctx) const
| Returns true if this expression is a bound member function. More...
Expr * | IgnoreImpCasts () LLVM_READONLY
| IgnoreImpCasts - Skip past any implicit casts which might surround this expression. More...
Expr * | IgnoreImplicit () LLVM_READONLY
| IgnoreImplicit - Skip past any implicit AST nodes which might surround this expression. More...
const Expr * | IgnoreImplicit () const LLVM_READONLY
Expr * | IgnoreParens () LLVM_READONLY
| IgnoreParens - Ignore parentheses. More...
Expr * | IgnoreParenCasts () LLVM_READONLY
| IgnoreParenCasts - Ignore parentheses and casts. More...
Expr * | IgnoreCasts () LLVM_READONLY
| Ignore casts. Strip off any CastExprs, returning their operand. More...
Expr * | IgnoreParenImpCasts () LLVM_READONLY
| IgnoreParenImpCasts - Ignore parentheses and implicit casts. More...
Expr * | IgnoreConversionOperator () LLVM_READONLY
| IgnoreConversionOperator - Ignore conversion operator. More...
const Expr * | IgnoreConversionOperator () const LLVM_READONLY
const Expr * | IgnoreParenImpCasts () const LLVM_READONLY
Expr * | IgnoreParenLValueCasts () LLVM_READONLY
| Ignore parentheses and lvalue casts. More...
const Expr * | IgnoreParenLValueCasts () const LLVM_READONLY
Expr * | IgnoreParenNoopCasts (ASTContext &Ctx) LLVM_READONLY
| IgnoreParenNoopCasts - Ignore parentheses and casts that do not change the value (including ptr->int casts of the same size). More...
Expr * | ignoreParenBaseCasts () LLVM_READONLY
| Ignore parentheses and derived-to-base casts. More...
const Expr * | ignoreParenBaseCasts () 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 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. More...
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. More...
const Expr * | getBestDynamicClassTypeExpr () const
| Get the inner expression that determines the best dynamic class. More...
const 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. More...
const Expr * | skipRValueSubobjectAdjustments () const
Public Member Functions inherited from clang::Stmt
void * | operator new (size_t bytes, const ASTContext &C, unsigned alignment=8)
void * | operator new (size_t bytes, const ASTContext *C, unsigned alignment=8)
void * | operator new (size_t bytes, void *mem) noexcept
void | operator delete (void *, const ASTContext &, unsigned) noexcept
void | operator delete (void *, const ASTContext *, unsigned) noexcept
void | operator delete (void *, size_t) noexcept
void | operator delete (void *, void *) noexcept
| Stmt (StmtClass SC)
StmtClass | getStmtClass () const
const char * | getStmtClassName () const
SourceRange | getSourceRange () const LLVM_READONLY
| SourceLocation tokens are not useful in isolation - they are low level value objects created/interpreted by SourceManager. More...
SourceLocation | getBeginLoc () const LLVM_READONLY
SourceLocation | getEndLoc () const LLVM_READONLY
void | dump () const
| Dumps the specified AST fragment and all subtrees to `llvm::errs()`. More...
void | dump (SourceManager &SM) const
void | dump (raw_ostream &OS, SourceManager &SM) const
void | dump (raw_ostream &OS) const
int64_t | getID (const ASTContext &Context) const
void | dumpColor () const
| dumpColor - same as dump(), but forces color highlighting. More...
void | dumpPretty (const ASTContext &Context) const
| dumpPretty/printPretty - These two methods do a "pretty print" of the AST back to its original source language syntax. More...
void | printPretty (raw_ostream &OS, PrinterHelper *Helper, const PrintingPolicy &Policy, unsigned Indentation=0, StringRef NewlineSymbol="\, const ASTContext *Context=nullptr) const
void | viewAST () const
| viewAST - Visualize an AST rooted at this Stmt* using GraphViz. More...
Stmt * | IgnoreImplicit ()
| Skip past any implicit AST nodes which might surround this statement, such as ExprWithCleanups or ImplicitCastExpr nodes. More...
const Stmt * | IgnoreImplicit () const
Stmt * | IgnoreContainers (bool IgnoreCaptured=false)
| Skip no-op (attributed, compound) container stmts and skip captured stmt at the top, if IgnoreCaptured is true. More...
const Stmt * | IgnoreContainers (bool IgnoreCaptured=false) const
const Stmt * | stripLabelLikeStatements () const
| Strip off all label-like statements. More...
Stmt * | stripLabelLikeStatements ()
child_range | children ()
const_child_range | children () const
child_iterator | child_begin ()
child_iterator | child_end ()
const_child_iterator | child_begin () const
const_child_iterator | child_end () const
void | Profile (llvm::FoldingSetNodeID &ID, const ASTContext &Context, bool Canonical) const
| Produce a unique representation of the given statement. More...
void | ProcessODRHash (llvm::FoldingSetNodeID &ID, ODRHash &Hash) const
| Calculate a unique representation for a statement that is stable across compiler invocations. More...

## Static Public Member Functions
static PseudoObjectExpr * | Create (const ASTContext &Context, Expr *syntactic, ArrayRef< Expr *> semantic, unsigned resultIndex)
static PseudoObjectExpr * | Create (const ASTContext &Context, EmptyShell shell, unsigned numSemanticExprs)
static bool | classof (const Stmt *T)
Static Public Member Functions inherited from clang::Expr
static ExprValueKind | getValueKindForType (QualType T)
| getValueKindForType - Given a formal return or parameter type, give its value kind. More...
static bool | isPotentialConstantExpr (const FunctionDecl *FD, SmallVectorImpl< PartialDiagnosticAt > &Diags)
| isPotentialConstantExpr - Return true if this function's definition might be usable in a constant expression in C++11, if it were marked constexpr. More...
static bool | isPotentialConstantExprUnevaluated (Expr *E, const FunctionDecl *FD, SmallVectorImpl< PartialDiagnosticAt > &Diags)
| 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. More...
static QualType | findBoundMemberType (const Expr *expr)
| Given an expression of bound-member type, find the type of the member. More...
static bool | hasAnyTypeDependentArguments (ArrayRef< Expr *> Exprs)
| hasAnyTypeDependentArguments - Determines if any of the expressions in Exprs is type-dependent. More...
static bool | classof (const Stmt *T)
Static Public Member Functions inherited from clang::Stmt
static void | addStmtClass (const StmtClass s)
static void | EnableStatistics ()
static void | PrintStats ()

## Public Attributes
friend | TrailingObjects

## Friends
class | ASTStmtReader

## Additional Inherited Members
Protected Types inherited from clang::Stmt
enum | { NumStmtBits = 8 }
enum | { NumExprBits = NumStmtBits + 9 }
enum | APFloatSemantics { IEEEhalf, IEEEsingle, IEEEdouble, x87DoubleExtended, IEEEquad, PPCDoubleDouble }
enum | { NumCallExprBits = 32 }
enum | { NumOverloadExprBits = NumExprBits + 1 }
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...
Protected Member Functions inherited from clang::Stmt
void * | operator new (size_t bytes) noexcept
void | operator delete (void *data) noexcept
| Stmt (StmtClass SC, EmptyShell)
| Construct an empty statement. More...
Protected Attributes inherited from clang::Stmt
union {
StmtBitfields StmtBits
NullStmtBitfields NullStmtBits
CompoundStmtBitfields CompoundStmtBits
LabelStmtBitfields LabelStmtBits
AttributedStmtBitfields AttributedStmtBits
IfStmtBitfields IfStmtBits
SwitchStmtBitfields SwitchStmtBits
WhileStmtBitfields WhileStmtBits
DoStmtBitfields DoStmtBits
ForStmtBitfields ForStmtBits
GotoStmtBitfields GotoStmtBits
ContinueStmtBitfields ContinueStmtBits
BreakStmtBitfields BreakStmtBits
ReturnStmtBitfields ReturnStmtBits
SwitchCaseBitfields SwitchCaseBits
ExprBitfields ExprBits
PredefinedExprBitfields PredefinedExprBits
DeclRefExprBitfields DeclRefExprBits
FloatingLiteralBitfields FloatingLiteralBits
StringLiteralBitfields StringLiteralBits
CharacterLiteralBitfields CharacterLiteralBits
UnaryOperatorBitfields UnaryOperatorBits
UnaryExprOrTypeTraitExprBitfields UnaryExprOrTypeTraitExprBits
ArraySubscriptExprBitfields ArraySubscriptExprBits
CallExprBitfields CallExprBits
MemberExprBitfields MemberExprBits
CastExprBitfields CastExprBits
BinaryOperatorBitfields BinaryOperatorBits
InitListExprBitfields InitListExprBits
ParenListExprBitfields ParenListExprBits
PseudoObjectExprBitfields PseudoObjectExprBits
CXXOperatorCallExprBitfields CXXOperatorCallExprBits
CXXBoolLiteralExprBitfields CXXBoolLiteralExprBits
CXXNullPtrLiteralExprBitfields CXXNullPtrLiteralExprBits
CXXThisExprBitfields CXXThisExprBits
CXXThrowExprBitfields CXXThrowExprBits
CXXDefaultArgExprBitfields CXXDefaultArgExprBits
CXXDefaultInitExprBitfields CXXDefaultInitExprBits
CXXScalarValueInitExprBitfields CXXScalarValueInitExprBits
CXXNewExprBitfields CXXNewExprBits
CXXDeleteExprBitfields CXXDeleteExprBits
TypeTraitExprBitfields TypeTraitExprBits
DependentScopeDeclRefExprBitfields DependentScopeDeclRefExprBits
CXXConstructExprBitfields CXXConstructExprBits
ExprWithCleanupsBitfields ExprWithCleanupsBits
CXXUnresolvedConstructExprBitfields CXXUnresolvedConstructExprBits
CXXDependentScopeMemberExprBitfields CXXDependentScopeMemberExprBits
OverloadExprBitfields OverloadExprBits
UnresolvedLookupExprBitfields UnresolvedLookupExprBits
UnresolvedMemberExprBitfields UnresolvedMemberExprBits
CXXNoexceptExprBitfields CXXNoexceptExprBits
SubstNonTypeTemplateParmExprBitfields SubstNonTypeTemplateParmExprBits
CoawaitExprBitfields CoawaitBits
ObjCIndirectCopyRestoreExprBitfields ObjCIndirectCopyRestoreExprBits
OpaqueValueExprBitfields OpaqueValueExprBits
}; |

## Detailed Description

PseudoObjectExpr - An expression which accesses a pseudo-object l-value.

A pseudo-object is an abstract object, accesses to which are translated to calls. The pseudo-object expression has a syntactic form, which shows how the expression was actually written in the source code, and a semantic form, which is a series of expressions to be executed in order which detail how the operation is actually evaluated. Optionally, one of the semantic forms may also provide a result value for the expression.

If any of the semantic-form expressions is an OpaqueValueExpr, that OVE is required to have a source expression, and it is bound to the result of that source expression. Such OVEs may appear only in subsequent semantic-form expressions and as sub-expressions of the syntactic form.

PseudoObjectExpr should be used only when an operation can be usefully described in terms of fairly simple rewrite rules on objects and functions that are meant to be used by end-developers. For example, under the Itanium ABI, dynamic casts are implemented as a call to a runtime function called __dynamic_cast; using this class to describe that would be inappropriate because that call is not really part of the user-visible semantics, and instead the cast is properly reflected in the AST and IR-generation has been taught to generate the call as necessary. In contrast, an Objective-C property access is semantically defined to be equivalent to a particular message send, and this is very much part of the user model. The name of this class encourages this modelling design.

Definition at line 5299 of file Expr.h.

## Member Typedef Documentation

## ◆ const_semantics_iterator

typedef const Expr* const* clang::PseudoObjectExpr::const_semantics_iterator

Definition at line 5366 of file Expr.h.

## ◆ semantics_iterator

typedef Expr* const* clang::PseudoObjectExpr::semantics_iterator

Definition at line 5365 of file Expr.h.

## Member Enumeration Documentation

## ◆ anonymous enum

anonymous enum : unsigned

NoResult - A value for the result index indicating that there is no semantic result.

Enumerator
NoResult |

Definition at line 5331 of file Expr.h.

## Member Function Documentation

## ◆ children() [1/2]

child_range clang::PseudoObjectExpr::children | ( |  | ) |
| inline

Definition at line 5406 of file Expr.h.

References clang::cast_away_const(), and clang::children().

## ◆ children() [2/2]

const_child_range clang::PseudoObjectExpr::children | ( |  | ) | const
| inline

Definition at line 5412 of file Expr.h.

## ◆ classof()

static bool clang::PseudoObjectExpr::classof | ( | const Stmt * | T | ) |
| inline static

Definition at line 5418 of file Expr.h.

References clang::Stmt::getStmtClass().

## ◆ Create() [1/2]

PseudoObjectExpr * PseudoObjectExpr::Create | ( | const ASTContext & | Context,
|  | Expr * | syntactic,
|  | ArrayRef< Expr *> | semantic,
|  | unsigned | resultIndex
| ) |  |
| static

Definition at line 4092 of file Expr.cpp.

References clang::ASTContext::Allocate(), clang::Expr::containsUnexpandedParameterPack(), clang::Expr::Expr(), clang::Stmt::ExprBits, clang::Expr::getObjectKind(), clang::if(), clang::Expr::isInstantiationDependent(), clang::Expr::isTypeDependent(), clang::Expr::isValueDependent(), clang::OK_Ordinary, clang::Stmt::PseudoObjectExprBits, clang::ast_matchers::type, clang::VK_RValue, and clang::ASTContext::VoidTy.

## ◆ Create() [2/2]

PseudoObjectExpr * PseudoObjectExpr::Create | ( | const ASTContext & | Context,
|  | EmptyShell | shell,
|  | unsigned | numSemanticExprs
| ) |  |
| static

Definition at line 4078 of file Expr.cpp.

## ◆ getBeginLoc()

SourceLocation clang::PseudoObjectExpr::getBeginLoc | ( |  | ) | const
| inline

Definition at line 5399 of file Expr.h.

## ◆ getEndLoc()

SourceLocation clang::PseudoObjectExpr::getEndLoc | ( |  | ) | const
| inline

Definition at line 5402 of file Expr.h.

## ◆ getExprLoc()

SourceLocation clang::PseudoObjectExpr::getExprLoc | ( |  | ) | const
| inline

Definition at line 5395 of file Expr.h.

## ◆ getNumSemanticExprs()

unsigned clang::PseudoObjectExpr::getNumSemanticExprs | ( |  | ) | const
| inline

Definition at line 5363 of file Expr.h.

## ◆ getResultExpr() [1/2]

Expr* clang::PseudoObjectExpr::getResultExpr | ( |  | ) |
| inline

Return the result-bearing expression, or null if there is none.

Definition at line 5354 of file Expr.h.

Referenced by emitPseudoObjectExpr(), and shouldEmitSeparateBlockRetain().

## ◆ getResultExpr() [2/2]

const Expr* clang::PseudoObjectExpr::getResultExpr | ( |  | ) | const
| inline

Definition at line 5359 of file Expr.h.

## ◆ getResultExprIndex()

unsigned clang::PseudoObjectExpr::getResultExprIndex | ( |  | ) | const
| inline

Return the index of the result-bearing expression into the semantics expressions, or PseudoObjectExpr::NoResult if there is none.

Definition at line 5348 of file Expr.h.

## ◆ getSemanticExpr() [1/2]

Expr* clang::PseudoObjectExpr::getSemanticExpr | ( | unsigned | index | ) |
| inline

Definition at line 5387 of file Expr.h.

## ◆ getSemanticExpr() [2/2]

const Expr* clang::PseudoObjectExpr::getSemanticExpr | ( | unsigned | index | ) | const
| inline

Definition at line 5391 of file Expr.h.

## ◆ getSyntacticForm() [1/2]

Expr* clang::PseudoObjectExpr::getSyntacticForm | ( |  | ) |
| inline

Return the syntactic form of this expression, i.e.

the expression it actually looks like. Likely to be expressed in terms of OpaqueValueExprs bound in the semantic form.

Definition at line 5343 of file Expr.h.

Referenced by getBestPropertyDecl(), getSyntacticFromForPseudoObjectExpr(), isImplicitThis(), clang::Expr::isUnusedResultAWarning(), and clang::Sema::recreateSyntacticForm().

## ◆ getSyntacticForm() [2/2]

const Expr* clang::PseudoObjectExpr::getSyntacticForm | ( |  | ) | const
| inline

Definition at line 5344 of file Expr.h.

## ◆ semantics() [1/2]

llvm::iterator_range<semantics_iterator> clang::PseudoObjectExpr::semantics | ( |  | ) |
| inline

Definition at line 5380 of file Expr.h.

## ◆ semantics() [2/2]

llvm::iterator_range<const_semantics_iterator> clang::PseudoObjectExpr::semantics | ( |  | ) | const
| inline

Definition at line 5383 of file Expr.h.

## ◆ semantics_begin() [1/2]

semantics_iterator clang::PseudoObjectExpr::semantics_begin | ( |  | ) |
| inline

Definition at line 5367 of file Expr.h.

Referenced by emitPseudoObjectExpr(), and shouldEmitSeparateBlockRetain().

## ◆ semantics_begin() [2/2]

const_semantics_iterator clang::PseudoObjectExpr::semantics_begin | ( |  | ) | const
| inline

Definition at line 5370 of file Expr.h.

## ◆ semantics_end() [1/2]

semantics_iterator clang::PseudoObjectExpr::semantics_end | ( |  | ) |
| inline

Definition at line 5373 of file Expr.h.

Referenced by emitPseudoObjectExpr(), and shouldEmitSeparateBlockRetain().

## ◆ semantics_end() [2/2]

const_semantics_iterator clang::PseudoObjectExpr::semantics_end | ( |  | ) | const
| inline

Definition at line 5376 of file Expr.h.

## Friends And Related Function Documentation

## ◆ ASTStmtReader

friend class ASTStmtReader
| friend

Definition at line 5423 of file Expr.h.

## Member Data Documentation

## ◆ TrailingObjects

friend clang::PseudoObjectExpr::TrailingObjects

Definition at line 5422 of file Expr.h.

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

- include/clang/AST/Expr.h
- lib/AST/Expr.cpp