clang  14.0.0git
Public Types | Public Member Functions | Static Public Member Functions | Public Attributes | Friends | List of all members
clang::LambdaExpr Class Referencefinal

A C++ lambda expression, which produces a function object (of unspecified type) that can be invoked later. More...

#include "clang/AST/ExprCXX.h"

Inheritance diagram for clang::LambdaExpr:
Inheritance graph
[legend]
Collaboration diagram for clang::LambdaExpr:
Collaboration graph
[legend]

Public Types

using capture_iterator = const LambdaCapture *
 An iterator that walks over the captures of the lambda, both implicit and explicit. More...
 
using capture_range = llvm::iterator_range< capture_iterator >
 An iterator over a range of lambda captures. More...
 
using capture_init_iterator = Expr **
 Iterator that walks over the capture initialization arguments. More...
 
using const_capture_init_iterator = Expr *const *
 Const iterator that walks over the capture initialization arguments. More...
 
- 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  ConstantExprKind { ConstantExprKind::Normal, ConstantExprKind::NonClassTemplateArgument, ConstantExprKind::ClassTemplateArgument, ConstantExprKind::ImmediateInvocation }
 
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 }
 
enum  Likelihood { LH_Unlikely = -1, LH_None, LH_Likely }
 The likelihood of a branch being taken. More...
 
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

LambdaCaptureDefault getCaptureDefault () const
 Determine the default capture kind for this lambda. More...
 
SourceLocation getCaptureDefaultLoc () const
 Retrieve the location of this lambda's capture-default, if any. More...
 
bool isInitCapture (const LambdaCapture *Capture) const
 Determine whether one of this lambda's captures is an init-capture. More...
 
capture_range captures () const
 Retrieve this lambda's captures. More...
 
capture_iterator capture_begin () const
 Retrieve an iterator pointing to the first lambda capture. More...
 
capture_iterator capture_end () const
 Retrieve an iterator pointing past the end of the sequence of lambda captures. More...
 
unsigned capture_size () const
 Determine the number of captures in this lambda. More...
 
capture_range explicit_captures () const
 Retrieve this lambda's explicit captures. More...
 
capture_iterator explicit_capture_begin () const
 Retrieve an iterator pointing to the first explicit lambda capture. More...
 
capture_iterator explicit_capture_end () const
 Retrieve an iterator pointing past the end of the sequence of explicit lambda captures. More...
 
capture_range implicit_captures () const
 Retrieve this lambda's implicit captures. More...
 
capture_iterator implicit_capture_begin () const
 Retrieve an iterator pointing to the first implicit lambda capture. More...
 
capture_iterator implicit_capture_end () const
 Retrieve an iterator pointing past the end of the sequence of implicit lambda captures. More...
 
llvm::iterator_range< capture_init_iteratorcapture_inits ()
 Retrieve the initialization expressions for this lambda's captures. More...
 
llvm::iterator_range< const_capture_init_iteratorcapture_inits () const
 Retrieve the initialization expressions for this lambda's captures. More...
 
capture_init_iterator capture_init_begin ()
 Retrieve the first initialization argument for this lambda expression (which initializes the first capture field). More...
 
const_capture_init_iterator capture_init_begin () const
 Retrieve the first initialization argument for this lambda expression (which initializes the first capture field). More...
 
capture_init_iterator capture_init_end ()
 Retrieve the iterator pointing one past the last initialization argument for this lambda expression. More...
 
const_capture_init_iterator capture_init_end () const
 Retrieve the iterator pointing one past the last initialization argument for this lambda expression. More...
 
SourceRange getIntroducerRange () const
 Retrieve the source range covering the lambda introducer, which contains the explicit capture list surrounded by square brackets ([...]). More...
 
CXXRecordDeclgetLambdaClass () const
 Retrieve the class that corresponds to the lambda. More...
 
CXXMethodDeclgetCallOperator () const
 Retrieve the function call operator associated with this lambda expression. More...
 
FunctionTemplateDeclgetDependentCallOperator () const
 Retrieve the function template call operator associated with this lambda expression. More...
 
TemplateParameterListgetTemplateParameterList () const
 If this is a generic lambda expression, retrieve the template parameter list associated with it, or else return null. More...
 
ArrayRef< NamedDecl * > getExplicitTemplateParameters () const
 Get the template parameters were explicitly specified (as opposed to being invented by use of an auto parameter). More...
 
ExprgetTrailingRequiresClause () const
 Get the trailing requires clause, if any. More...
 
bool isGenericLambda () const
 Whether this is a generic lambda. More...
 
StmtgetBody () const
 Retrieve the body of the lambda. More...
 
const CompoundStmtgetCompoundStmtBody () const
 Retrieve the CompoundStmt representing the body of the lambda. More...
 
CompoundStmtgetCompoundStmtBody ()
 
bool isMutable () const
 Determine whether the lambda is mutable, meaning that any captures values can be modified. More...
 
bool hasExplicitParameters () const
 Determine whether this lambda has an explicit parameter list vs. More...
 
bool hasExplicitResultType () const
 Whether this lambda had its result type explicitly specified. More...
 
SourceLocation getBeginLoc () const LLVM_READONLY
 
SourceLocation getEndLoc () const LLVM_READONLY
 
child_range children ()
 Includes the captures and the body of the lambda. More...
 
const_child_range children () const
 
- Public Member Functions inherited from clang::Expr
 Expr ()=delete
 
 Expr (const Expr &)=delete
 
 Expr (Expr &&)=delete
 
Exproperator= (const Expr &)=delete
 
Exproperator= (Expr &&)=delete
 
QualType getType () const
 
void setType (QualType t)
 
ExprDependence getDependence () const
 
bool isValueDependent () const
 Determines whether the value of this expression depends on. More...
 
bool isTypeDependent () const
 Determines whether the type of this expression depends on. More...
 
bool isInstantiationDependent () const
 Whether this expression is instantiation-dependent, meaning that it depends in some way on. More...
 
bool containsUnexpandedParameterPack () const
 Whether this expression contains an unexpanded parameter pack (for C++11 variadic templates). More...
 
bool containsErrors () const
 Whether this expression contains subexpressions which had errors, e.g. More...
 
SourceLocation getExprLoc () const LLVM_READONLY
 getExprLoc - Return the preferred location for the arrow when diagnosing a problem with a generic expression. More...
 
bool isReadIfDiscardedInCPlusPlus11 () const
 Determine whether an lvalue-to-rvalue conversion should implicitly be applied to this expression if it appears as a discarded-value expression in C++11 onwards. 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 isPRValue () 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...
 
FPOptions getFPFeaturesInEffect (const LangOptions &LO) const
 Returns the set of floating point options that apply to this expression. 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...
 
FieldDeclgetSourceBitField ()
 If this expression refers to a bit-field, retrieve the declaration of that bit-field. More...
 
const FieldDeclgetSourceBitField () const
 
DeclgetReferencedDeclOfCallee ()
 
const DeclgetReferencedDeclOfCallee () 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 refersToMatrixElement () const
 Returns whether this expression refers to a matrix 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 (bool Semantic=true) const
 isKnownToHaveBooleanValue - Return true if this is an integer expression that is known to return 0 or 1. More...
 
Optional< llvm::APSIntgetIntegerConstantExpr (const ASTContext &Ctx, SourceLocation *Loc=nullptr, bool isEvaluated=true) const
 isIntegerConstantExpr - Return the value if this expression is a valid integer constant expression. 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, bool InConstantContext=false) 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, bool InConstantContext=false) 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, bool InConstantContext=false) 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 EvaluateAsFixedPoint (EvalResult &Result, const ASTContext &Ctx, SideEffectsKind AllowSideEffects=SE_NoSideEffects, bool InConstantContext=false) const
 EvaluateAsFloat - Return true if this is a constant which we can fold and convert to a fixed point value. 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, bool InConstantContext=false) 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, bool IsConstantInitializer) 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, const ASTContext &Ctx, ConstantExprKind Kind=ConstantExprKind::Normal) 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...
 
bool tryEvaluateStrLen (uint64_t &Result, ASTContext &Ctx) const
 If the current Expr is a pointer, this will try to statically determine the strlen of the string pointed to. 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...
 
ExprIgnoreUnlessSpelledInSource ()
 Skip past any invisble AST nodes which might surround this statement, such as ExprWithCleanups or ImplicitCastExpr nodes, but also injected CXXMemberExpr and CXXConstructExpr which represent implicit conversions. More...
 
const ExprIgnoreUnlessSpelledInSource () const
 
ExprIgnoreImpCasts () LLVM_READONLY
 Skip past any implicit casts which might surround this expression until reaching a fixed point. More...
 
const ExprIgnoreImpCasts () const
 
ExprIgnoreCasts () LLVM_READONLY
 Skip past any casts which might surround this expression until reaching a fixed point. More...
 
const ExprIgnoreCasts () const
 
ExprIgnoreImplicit () LLVM_READONLY
 Skip past any implicit AST nodes which might surround this expression until reaching a fixed point. More...
 
const ExprIgnoreImplicit () const
 
ExprIgnoreImplicitAsWritten () LLVM_READONLY
 Skip past any implicit AST nodes which might surround this expression until reaching a fixed point. More...
 
const ExprIgnoreImplicitAsWritten () const
 
ExprIgnoreParens () LLVM_READONLY
 Skip past any parentheses which might surround this expression until reaching a fixed point. More...
 
const ExprIgnoreParens () const
 
ExprIgnoreParenImpCasts () LLVM_READONLY
 Skip past any parentheses and implicit casts which might surround this expression until reaching a fixed point. More...
 
const ExprIgnoreParenImpCasts () const
 
ExprIgnoreParenCasts () LLVM_READONLY
 Skip past any parentheses and casts which might surround this expression until reaching a fixed point. More...
 
const ExprIgnoreParenCasts () const
 
ExprIgnoreConversionOperatorSingleStep () LLVM_READONLY
 Skip conversion operators. More...
 
const ExprIgnoreConversionOperatorSingleStep () const
 
ExprIgnoreParenLValueCasts () LLVM_READONLY
 Skip past any parentheses and lvalue casts which might surround this expression until reaching a fixed point. More...
 
const ExprIgnoreParenLValueCasts () const
 
ExprIgnoreParenNoopCasts (const ASTContext &Ctx) LLVM_READONLY
 Skip past any parenthese and casts which do not change the value (including ptr->int casts of the same size) until reaching a fixed point. More...
 
const ExprIgnoreParenNoopCasts (const ASTContext &Ctx) const
 
ExprIgnoreParenBaseCasts () LLVM_READONLY
 Skip past any parentheses and derived-to-base casts until reaching a fixed point. More...
 
const ExprIgnoreParenBaseCasts () const
 
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 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 ExprgetBestDynamicClassTypeExpr () const
 Get the inner expression that determines the best dynamic class. More...
 
const ExprskipRValueSubobjectAdjustments (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 ExprskipRValueSubobjectAdjustments () const
 
- Public Member Functions inherited from clang::ValueStmt
const ExprgetExprStmt () const
 
ExprgetExprStmt ()
 
- 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 ()=delete
 
 Stmt (const Stmt &)=delete
 
 Stmt (Stmt &&)=delete
 
Stmtoperator= (const Stmt &)=delete
 
Stmtoperator= (Stmt &&)=delete
 
 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 (raw_ostream &OS, const ASTContext &Context) 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="\n", const ASTContext *Context=nullptr) const
 
void printJson (raw_ostream &Out, PrinterHelper *Helper, const PrintingPolicy &Policy, bool AddQuotes) const
 Pretty-prints in JSON format. More...
 
void viewAST () const
 viewAST - Visualize an AST rooted at this Stmt* using GraphViz. More...
 
StmtIgnoreContainers (bool IgnoreCaptured=false)
 Skip no-op (attributed, compound) container stmts and skip captured stmt at the top, if IgnoreCaptured is true. More...
 
const StmtIgnoreContainers (bool IgnoreCaptured=false) const
 
const StmtstripLabelLikeStatements () const
 Strip off all label-like statements. More...
 
StmtstripLabelLikeStatements ()
 
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 LambdaExprCreate (const ASTContext &C, CXXRecordDecl *Class, SourceRange IntroducerRange, LambdaCaptureDefault CaptureDefault, SourceLocation CaptureDefaultLoc, bool ExplicitParams, bool ExplicitResultType, ArrayRef< Expr * > CaptureInits, SourceLocation ClosingBrace, bool ContainsUnexpandedParameterPack)
 Construct a new lambda expression. More...
 
static LambdaExprCreateDeserialized (const ASTContext &C, unsigned NumCaptures)
 Construct a new lambda expression that will be deserialized from an external source. More...
 
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 isSameComparisonOperand (const Expr *E1, const Expr *E2)
 Checks that the two Expr's will refer to the same value as a comparison operand. More...
 
static bool classof (const Stmt *T)
 
- Static Public Member Functions inherited from clang::ValueStmt
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 ()
 
static Likelihood getLikelihood (ArrayRef< const Attr * > Attrs)
 
static Likelihood getLikelihood (const Stmt *S)
 
static const AttrgetLikelihoodAttr (const Stmt *S)
 
static Likelihood getLikelihood (const Stmt *Then, const Stmt *Else)
 
static std::tuple< bool, const Attr *, const Attr * > determineLikelihoodConflict (const Stmt *Then, const Stmt *Else)
 

Public Attributes

friend TrailingObjects
 

Friends

class ASTStmtReader
 
class ASTStmtWriter
 

Additional Inherited Members

- Protected Types inherited from clang::Stmt
enum  { NumStmtBits = 8 }
 
enum  { NumExprBits = NumStmtBits + 5 + llvm::BitWidth<ExprDependence> }
 
enum  { NumCallExprBits = 32 }
 
enum  { NumOverloadExprBits = NumExprBits + 1 }
 
template<typename T >
using ConstCastIterator = CastIterator< T, const T *const, const Stmt *const >
 Const iterator for iterating over Stmt * arrays that contain only T *. More...
 
using ExprIterator = CastIterator< Expr >
 
using ConstExprIterator = ConstCastIterator< Expr >
 
- Protected Member Functions inherited from clang::Expr
 Expr (StmtClass SC, QualType T, ExprValueKind VK, ExprObjectKind OK)
 
 Expr (StmtClass SC, EmptyShell)
 Construct an empty expression. More...
 
void setDependence (ExprDependence Deps)
 Each concrete expr subclass is expected to compute its dependence and call this in the constructor. More...
 
- Protected Member Functions inherited from clang::ValueStmt
 Stmt (StmtClass SC, EmptyShell)
 Construct an empty statement. More...
 
 Stmt ()=delete
 
 Stmt (const Stmt &)=delete
 
 Stmt (Stmt &&)=delete
 
 Stmt (StmtClass SC)
 
- 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
 
   ConstantExprBitfields   ConstantExprBits
 
   PredefinedExprBitfields   PredefinedExprBits
 
   DeclRefExprBitfields   DeclRefExprBits
 
   FloatingLiteralBitfields   FloatingLiteralBits
 
   StringLiteralBitfields   StringLiteralBits
 
   CharacterLiteralBitfields   CharacterLiteralBits
 
   UnaryOperatorBitfields   UnaryOperatorBits
 
   UnaryExprOrTypeTraitExprBitfields   UnaryExprOrTypeTraitExprBits
 
   ArrayOrMatrixSubscriptExprBitfields   ArrayOrMatrixSubscriptExprBits
 
   CallExprBitfields   CallExprBits
 
   MemberExprBitfields   MemberExprBits
 
   CastExprBitfields   CastExprBits
 
   BinaryOperatorBitfields   BinaryOperatorBits
 
   InitListExprBitfields   InitListExprBits
 
   ParenListExprBitfields   ParenListExprBits
 
   GenericSelectionExprBitfields   GenericSelectionExprBits
 
   PseudoObjectExprBitfields   PseudoObjectExprBits
 
   SourceLocExprBitfields   SourceLocExprBits
 
   StmtExprBitfields   StmtExprBits
 
   CXXOperatorCallExprBitfields   CXXOperatorCallExprBits
 
   CXXRewrittenBinaryOperatorBitfields   CXXRewrittenBinaryOperatorBits
 
   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
 
   LambdaExprBitfields   LambdaExprBits
 
   RequiresExprBitfields   RequiresExprBits
 
   CoawaitExprBitfields   CoawaitBits
 
   ObjCIndirectCopyRestoreExprBitfields   ObjCIndirectCopyRestoreExprBits
 
   OpaqueValueExprBitfields   OpaqueValueExprBits
 
}; 
 

Detailed Description

A C++ lambda expression, which produces a function object (of unspecified type) that can be invoked later.

Example:

void low_pass_filter(std::vector<double> &values, double cutoff) {
values.erase(std::remove_if(values.begin(), values.end(),
[=](double value) { return value > cutoff; });
}

C++11 lambda expressions can capture local variables, either by copying the values of those local variables at the time the function object is constructed (not when it is called!) or by holding a reference to the local variable. These captures can occur either implicitly or can be written explicitly between the square brackets ([...]) that start the lambda expression.

C++1y introduces a new form of "capture" called an init-capture that includes an initializing expression (rather than capturing a variable), and which can never occur implicitly.

Definition at line 1865 of file ExprCXX.h.

Member Typedef Documentation

◆ capture_init_iterator

Iterator that walks over the capture initialization arguments.

Definition at line 1973 of file ExprCXX.h.

◆ capture_iterator

An iterator that walks over the captures of the lambda, both implicit and explicit.

Definition at line 1931 of file ExprCXX.h.

◆ capture_range

using clang::LambdaExpr::capture_range = llvm::iterator_range<capture_iterator>

An iterator over a range of lambda captures.

Definition at line 1934 of file ExprCXX.h.

◆ const_capture_init_iterator

Const iterator that walks over the capture initialization arguments.

FIXME: This interface is prone to being used incorrectly.

Definition at line 1978 of file ExprCXX.h.

Member Function Documentation

◆ capture_begin()

LambdaExpr::capture_iterator LambdaExpr::capture_begin ( ) const

Retrieve an iterator pointing to the first lambda capture.

Definition at line 1214 of file ExprCXX.cpp.

References getLambdaClass().

Referenced by capture_end(), captures(), and explicit_capture_begin().

◆ capture_end()

LambdaExpr::capture_iterator LambdaExpr::capture_end ( ) const

Retrieve an iterator pointing past the end of the sequence of lambda captures.

Definition at line 1218 of file ExprCXX.cpp.

References capture_begin(), and capture_size().

Referenced by captures(), and implicit_capture_end().

◆ capture_init_begin() [1/2]

capture_init_iterator clang::LambdaExpr::capture_init_begin ( )
inline

Retrieve the first initialization argument for this lambda expression (which initializes the first capture field).

Definition at line 1992 of file ExprCXX.h.

Referenced by capture_init_end(), and capture_inits().

◆ capture_init_begin() [2/2]

const_capture_init_iterator clang::LambdaExpr::capture_init_begin ( ) const
inline

Retrieve the first initialization argument for this lambda expression (which initializes the first capture field).

Definition at line 1998 of file ExprCXX.h.

◆ capture_init_end() [1/2]

capture_init_iterator clang::LambdaExpr::capture_init_end ( )
inline

Retrieve the iterator pointing one past the last initialization argument for this lambda expression.

Definition at line 2004 of file ExprCXX.h.

References capture_init_begin(), and capture_size().

Referenced by capture_inits().

◆ capture_init_end() [2/2]

const_capture_init_iterator clang::LambdaExpr::capture_init_end ( ) const
inline

Retrieve the iterator pointing one past the last initialization argument for this lambda expression.

Definition at line 2010 of file ExprCXX.h.

References capture_init_begin(), and capture_size().

◆ capture_inits() [1/2]

llvm::iterator_range<capture_init_iterator> clang::LambdaExpr::capture_inits ( )
inline

Retrieve the initialization expressions for this lambda's captures.

Definition at line 1981 of file ExprCXX.h.

References capture_init_begin(), and capture_init_end().

Referenced by clang::ASTNodeImporter::VisitLambdaExpr().

◆ capture_inits() [2/2]

llvm::iterator_range<const_capture_init_iterator> clang::LambdaExpr::capture_inits ( ) const
inline

Retrieve the initialization expressions for this lambda's captures.

Definition at line 1986 of file ExprCXX.h.

References capture_init_begin(), and capture_init_end().

◆ capture_size()

unsigned clang::LambdaExpr::capture_size ( ) const
inline

Determine the number of captures in this lambda.

Definition at line 1947 of file ExprCXX.h.

References clang::Stmt::LambdaExprBits.

Referenced by capture_end(), capture_init_end(), children(), getBody(), and clang::ASTNodeImporter::VisitLambdaExpr().

◆ captures()

LambdaExpr::capture_range LambdaExpr::captures ( ) const

Retrieve this lambda's captures.

Definition at line 1222 of file ExprCXX.cpp.

References capture_begin(), and capture_end().

◆ children() [1/2]

LambdaExpr::const_child_range LambdaExpr::children ( )

Includes the captures and the body of the lambda.

Definition at line 1282 of file ExprCXX.cpp.

References capture_size().

◆ children() [2/2]

const_child_range clang::LambdaExpr::children ( ) const

◆ classof()

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

Definition at line 2076 of file ExprCXX.h.

References clang::Stmt::getStmtClass().

◆ Create()

LambdaExpr * LambdaExpr::Create ( const ASTContext C,
CXXRecordDecl Class,
SourceRange  IntroducerRange,
LambdaCaptureDefault  CaptureDefault,
SourceLocation  CaptureDefaultLoc,
bool  ExplicitParams,
bool  ExplicitResultType,
ArrayRef< Expr * >  CaptureInits,
SourceLocation  ClosingBrace,
bool  ContainsUnexpandedParameterPack 
)
static

Construct a new lambda expression.

Definition at line 1163 of file ExprCXX.cpp.

References clang::ASTContext::Allocate(), and clang::ASTContext::getTypeDeclType().

Referenced by clang::Sema::BuildLambdaExpr(), and clang::ASTNodeImporter::VisitLambdaExpr().

◆ CreateDeserialized()

LambdaExpr * LambdaExpr::CreateDeserialized ( const ASTContext C,
unsigned  NumCaptures 
)
static

Construct a new lambda expression that will be deserialized from an external source.

Definition at line 1183 of file ExprCXX.cpp.

◆ explicit_capture_begin()

LambdaExpr::capture_iterator LambdaExpr::explicit_capture_begin ( ) const

Retrieve an iterator pointing to the first explicit lambda capture.

Definition at line 1226 of file ExprCXX.cpp.

References capture_begin().

Referenced by explicit_captures().

◆ explicit_capture_end()

LambdaExpr::capture_iterator LambdaExpr::explicit_capture_end ( ) const

Retrieve an iterator pointing past the end of the sequence of explicit lambda captures.

Definition at line 1230 of file ExprCXX.cpp.

References getLambdaClass().

Referenced by explicit_captures(), and implicit_capture_begin().

◆ explicit_captures()

LambdaExpr::capture_range LambdaExpr::explicit_captures ( ) const

Retrieve this lambda's explicit captures.

Definition at line 1236 of file ExprCXX.cpp.

References explicit_capture_begin(), and explicit_capture_end().

◆ getBeginLoc()

SourceLocation clang::LambdaExpr::getBeginLoc ( ) const
inline

Definition at line 2080 of file ExprCXX.h.

References clang::SourceRange::getBegin().

◆ getBody()

Stmt * LambdaExpr::getBody ( ) const

Retrieve the body of the lambda.

This will be most of the time a CompoundStmt, but can also be CoroutineBodyStmt wrapping a CompoundStmt. Note that unlike functions, lambda-expressions cannot have a function-try-block.

Definition at line 1197 of file ExprCXX.cpp.

References capture_size().

Referenced by getCompoundStmtBody().

◆ getCallOperator()

CXXMethodDecl * LambdaExpr::getCallOperator ( ) const

Retrieve the function call operator associated with this lambda expression.

Definition at line 1256 of file ExprCXX.cpp.

References clang::CXXRecordDecl::getLambdaCallOperator(), and getLambdaClass().

Referenced by getTrailingRequiresClause(), isInitCapture(), isMutable(), and clang::ASTNodeImporter::VisitLambdaExpr().

◆ getCaptureDefault()

LambdaCaptureDefault clang::LambdaExpr::getCaptureDefault ( ) const
inline

Determine the default capture kind for this lambda.

Definition at line 1919 of file ExprCXX.h.

References clang::Stmt::LambdaExprBits.

Referenced by clang::ASTNodeImporter::VisitLambdaExpr().

◆ getCaptureDefaultLoc()

SourceLocation clang::LambdaExpr::getCaptureDefaultLoc ( ) const
inline

Retrieve the location of this lambda's capture-default, if any.

Definition at line 1924 of file ExprCXX.h.

Referenced by clang::ASTNodeImporter::VisitLambdaExpr().

◆ getCompoundStmtBody() [1/2]

CompoundStmt* clang::LambdaExpr::getCompoundStmtBody ( )
inline

Definition at line 2058 of file ExprCXX.h.

◆ getCompoundStmtBody() [2/2]

const CompoundStmt * LambdaExpr::getCompoundStmtBody ( ) const

Retrieve the CompoundStmt representing the body of the lambda.

This is a convenience function for callers who do not need to handle node(s) which may wrap a CompoundStmt.

Definition at line 1202 of file ExprCXX.cpp.

References getBody().

◆ getDependentCallOperator()

FunctionTemplateDecl * LambdaExpr::getDependentCallOperator ( ) const

Retrieve the function template call operator associated with this lambda expression.

Definition at line 1261 of file ExprCXX.cpp.

References clang::CXXRecordDecl::getDependentLambdaCallOperator(), and getLambdaClass().

◆ getEndLoc()

SourceLocation clang::LambdaExpr::getEndLoc ( ) const
inline

Definition at line 2084 of file ExprCXX.h.

Referenced by clang::ASTNodeImporter::VisitLambdaExpr().

◆ getExplicitTemplateParameters()

ArrayRef< NamedDecl * > LambdaExpr::getExplicitTemplateParameters ( ) const

Get the template parameters were explicitly specified (as opposed to being invented by use of an auto parameter).

Definition at line 1271 of file ExprCXX.cpp.

References getLambdaClass(), and clang::CXXRecordDecl::getLambdaExplicitTemplateParameters().

◆ getIntroducerRange()

SourceRange clang::LambdaExpr::getIntroducerRange ( ) const
inline

Retrieve the source range covering the lambda introducer, which contains the explicit capture list surrounded by square brackets ([...]).

Definition at line 2017 of file ExprCXX.h.

Referenced by clang::ASTNodeImporter::VisitLambdaExpr().

◆ getLambdaClass()

CXXRecordDecl * LambdaExpr::getLambdaClass ( ) const

Retrieve the class that corresponds to the lambda.

This is the "closure type" (C++1y [expr.prim.lambda]), and stores the captures in its fields and provides the various operations permitted on a lambda (copying, calling).

Definition at line 1252 of file ExprCXX.cpp.

References clang::Type::getAsCXXRecordDecl(), and clang::Expr::getType().

Referenced by capture_begin(), explicit_capture_end(), getCallOperator(), getDependentCallOperator(), getExplicitTemplateParameters(), getTemplateParameterList(), and clang::ASTNodeImporter::VisitLambdaExpr().

◆ getTemplateParameterList()

TemplateParameterList * LambdaExpr::getTemplateParameterList ( ) const

If this is a generic lambda expression, retrieve the template parameter list associated with it, or else return null.

Definition at line 1266 of file ExprCXX.cpp.

References clang::CXXRecordDecl::getGenericLambdaTemplateParameterList(), and getLambdaClass().

Referenced by isGenericLambda().

◆ getTrailingRequiresClause()

Expr * LambdaExpr::getTrailingRequiresClause ( ) const

Get the trailing requires clause, if any.

Definition at line 1276 of file ExprCXX.cpp.

References getCallOperator(), and clang::DeclaratorDecl::getTrailingRequiresClause().

◆ hasExplicitParameters()

bool clang::LambdaExpr::hasExplicitParameters ( ) const
inline

Determine whether this lambda has an explicit parameter list vs.

an implicit (empty) parameter list.

Definition at line 2069 of file ExprCXX.h.

References clang::Stmt::LambdaExprBits.

Referenced by clang::ASTNodeImporter::VisitLambdaExpr().

◆ hasExplicitResultType()

bool clang::LambdaExpr::hasExplicitResultType ( ) const
inline

Whether this lambda had its result type explicitly specified.

Definition at line 2072 of file ExprCXX.h.

References clang::Stmt::LambdaExprBits.

Referenced by clang::ASTNodeImporter::VisitLambdaExpr().

◆ implicit_capture_begin()

LambdaExpr::capture_iterator LambdaExpr::implicit_capture_begin ( ) const

Retrieve an iterator pointing to the first implicit lambda capture.

Definition at line 1240 of file ExprCXX.cpp.

References explicit_capture_end().

Referenced by implicit_captures().

◆ implicit_capture_end()

LambdaExpr::capture_iterator LambdaExpr::implicit_capture_end ( ) const

Retrieve an iterator pointing past the end of the sequence of implicit lambda captures.

Definition at line 1244 of file ExprCXX.cpp.

References capture_end().

Referenced by implicit_captures().

◆ implicit_captures()

LambdaExpr::capture_range LambdaExpr::implicit_captures ( ) const

Retrieve this lambda's implicit captures.

Definition at line 1248 of file ExprCXX.cpp.

References implicit_capture_begin(), and implicit_capture_end().

◆ isGenericLambda()

bool clang::LambdaExpr::isGenericLambda ( ) const
inline

Whether this is a generic lambda.

Definition at line 2046 of file ExprCXX.h.

References getTemplateParameterList().

◆ isInitCapture()

bool LambdaExpr::isInitCapture ( const LambdaCapture Capture) const

Determine whether one of this lambda's captures is an init-capture.

Definition at line 1209 of file ExprCXX.cpp.

References getCallOperator().

◆ isMutable()

bool LambdaExpr::isMutable ( ) const

Determine whether the lambda is mutable, meaning that any captures values can be modified.

Definition at line 1280 of file ExprCXX.cpp.

References getCallOperator(), and clang::CXXMethodDecl::isConst().

Friends And Related Function Documentation

◆ ASTStmtReader

friend class ASTStmtReader
friend

Definition at line 1901 of file ExprCXX.h.

◆ ASTStmtWriter

friend class ASTStmtWriter
friend

Definition at line 1902 of file ExprCXX.h.

Member Data Documentation

◆ TrailingObjects

friend clang::LambdaExpr::TrailingObjects

Definition at line 1903 of file ExprCXX.h.


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