clang
3.7.0
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Describes an C or C++ initializer list. More...
#include <Expr.h>
Public Member Functions | |
InitListExpr (const ASTContext &C, SourceLocation lbraceloc, ArrayRef< Expr * > initExprs, SourceLocation rbraceloc) | |
InitListExpr (EmptyShell Empty) | |
Build an empty initializer list. More... | |
unsigned | getNumInits () const |
Expr ** | getInits () |
Retrieve the set of initializers. More... | |
const Expr * | getInit (unsigned Init) const |
Expr * | getInit (unsigned Init) |
void | setInit (unsigned Init, Expr *expr) |
void | reserveInits (const ASTContext &C, unsigned NumInits) |
Reserve space for some number of initializers. More... | |
void | resizeInits (const ASTContext &Context, unsigned NumInits) |
Specify the number of initializers. More... | |
Expr * | updateInit (const ASTContext &C, unsigned Init, Expr *expr) |
Updates the initializer at index Init with the new expression expr , and returns the old expression at that location. More... | |
Expr * | getArrayFiller () |
If this initializer list initializes an array with more elements than there are initializers in the list, specifies an expression to be used for value initialization of the rest of the elements. More... | |
const Expr * | getArrayFiller () const |
void | setArrayFiller (Expr *filler) |
bool | hasArrayFiller () const |
Return true if this is an array initializer and its array "filler" has been set. More... | |
FieldDecl * | getInitializedFieldInUnion () |
If this initializes a union, specifies which field in the union to initialize. More... | |
const FieldDecl * | getInitializedFieldInUnion () const |
void | setInitializedFieldInUnion (FieldDecl *FD) |
bool | isExplicit () |
bool | isStringLiteralInit () const |
SourceLocation | getLBraceLoc () const |
void | setLBraceLoc (SourceLocation Loc) |
SourceLocation | getRBraceLoc () const |
void | setRBraceLoc (SourceLocation Loc) |
bool | isSemanticForm () const |
InitListExpr * | getSemanticForm () const |
InitListExpr * | getSyntacticForm () const |
void | setSyntacticForm (InitListExpr *Init) |
bool | hadArrayRangeDesignator () const |
void | sawArrayRangeDesignator (bool ARD=true) |
SourceLocation | getLocStart () const LLVM_READONLY |
SourceLocation | getLocEnd () const LLVM_READONLY |
child_range | children () |
iterator | begin () |
const_iterator | begin () const |
iterator | end () |
const_iterator | end () const |
reverse_iterator | rbegin () |
const_reverse_iterator | rbegin () const |
reverse_iterator | rend () |
const_reverse_iterator | rend () const |
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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... | |
FieldDecl * | getSourceBitField () |
If this expression refers to a bit-field, retrieve the declaration of that bit-field. More... | |
const FieldDecl * | getSourceBitField () const |
const ObjCPropertyRefExpr * | getObjCProperty () const |
If this expression is an l-value for an Objective C property, find the underlying property reference expression. 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... | |
Expr * | IgnoreImpCasts () LLVM_READONLY |
Expr * | IgnoreImplicit () LLVM_READONLY |
const Expr * | IgnoreImplicit () const LLVM_READONLY |
Expr * | IgnoreParens () LLVM_READONLY |
Expr * | IgnoreParenCasts () LLVM_READONLY |
Expr * | IgnoreCasts () LLVM_READONLY |
Ignore casts. Strip off any CastExprs, returning their operand. More... | |
Expr * | IgnoreParenImpCasts () LLVM_READONLY |
Expr * | IgnoreConversionOperator () LLVM_READONLY |
const Expr * | IgnoreConversionOperator () const LLVM_READONLY |
const Expr * | IgnoreParenImpCasts () const LLVM_READONLY |
Expr * | IgnoreParenLValueCasts () LLVM_READONLY |
const Expr * | IgnoreParenLValueCasts () const LLVM_READONLY |
Expr * | IgnoreParenNoopCasts (ASTContext &Ctx) LLVM_READONLY |
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 * | skipRValueSubobjectAdjustments (SmallVectorImpl< const Expr * > &CommaLHS, SmallVectorImpl< SubobjectAdjustment > &Adjustments) const |
Static Public Member Functions | |
static bool | classof (const Stmt *T) |
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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 | |
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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... | |
Describes an C or C++ initializer list.
InitListExpr describes an initializer list, which can be used to initialize objects of different types, including struct/class/union types, arrays, and vectors. For example:
Prior to semantic analysis, an initializer list will represent the initializer list as written by the user, but will have the placeholder type "void". This initializer list is called the syntactic form of the initializer, and may contain C99 designated initializers (represented as DesignatedInitExprs), initializations of subobject members without explicit braces, and so on. Clients interested in the original syntax of the initializer list should use the syntactic form of the initializer list.
After semantic analysis, the initializer list will represent the semantic form of the initializer, where the initializations of all subobjects are made explicit with nested InitListExpr nodes and C99 designators have been eliminated by placing the designated initializations into the subobject they initialize. Additionally, any "holes" in the initialization, where no initializer has been specified for a particular subobject, will be replaced with implicitly-generated ImplicitValueInitExpr expressions that value-initialize the subobjects. Note, however, that the initializer lists may still have fewer initializers than there are elements to initialize within the object.
After semantic analysis has completed, given an initializer list, method isSemanticForm() returns true if and only if this is the semantic form of the initializer list (note: the same AST node may at the same time be the syntactic form). Given the semantic form of the initializer list, one can retrieve the syntactic form of that initializer list (when different) using method getSyntacticForm(); the method returns null if applied to a initializer list which is already in syntactic form. Similarly, given the syntactic form (i.e., an initializer list such that isSemanticForm() returns false), one can retrieve the semantic form using method getSemanticForm(). Since many initializer lists have the same syntactic and semantic forms, getSyntacticForm() may return NULL, indicating that the current semantic initializer list also serves as its syntactic form.
InitListExpr::InitListExpr | ( | const ASTContext & | C, |
SourceLocation | lbraceloc, | ||
ArrayRef< Expr * > | initExprs, | ||
SourceLocation | rbraceloc | ||
) |
Definition at line 1882 of file Expr.cpp.
References clang::Expr::containsUnexpandedParameterPack(), clang::ASTVector< T >::end(), clang::if(), clang::ASTVector< T >::insert(), clang::Expr::isInstantiationDependent(), clang::Expr::isTypeDependent(), clang::Expr::isValueDependent(), and sawArrayRangeDesignator().
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Definition at line 3928 of file Expr.h.
References clang::ASTVector< T >::begin().
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Definition at line 3929 of file Expr.h.
References clang::ASTVector< T >::begin().
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Definition at line 3917 of file Expr.h.
References clang::ASTVector< T >::empty(), and clang::ASTVector< T >::size().
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Definition at line 3930 of file Expr.h.
References clang::ASTVector< T >::end().
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Definition at line 3931 of file Expr.h.
References clang::ASTVector< T >::end().
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If this initializer list initializes an array with more elements than there are initializers in the list, specifies an expression to be used for value initialization of the rest of the elements.
Definition at line 3840 of file Expr.h.
Referenced by getArrayFiller(), and hasArrayFiller().
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Definition at line 3843 of file Expr.h.
References getArrayFiller().
Definition at line 3794 of file Expr.h.
References getNumInits().
Referenced by clang::Sema::DeduceAutoType(), DeduceFromInitializerList(), clang::CodeGen::CodeGenFunction::EmitInitListLValue(), GetNumNonZeroBytesInInit(), clang::Expr::isConstantInitializer(), isStringLiteralInit(), clang::InitializationSequence::RewrapReferenceInitList(), TryListConversion(), TryListInitialization(), TryReferenceListInitialization(), and clang::ento::ExprEngine::VisitInitListExpr().
Definition at line 3799 of file Expr.h.
References getNumInits().
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If this initializes a union, specifies which field in the union to initialize.
Typically, this field is the first named field within the union. However, a designated initializer can specify the initialization of a different field within the union.
Definition at line 3858 of file Expr.h.
Referenced by getInitializedFieldInUnion(), clang::Expr::isConstantInitializer(), and setInitializedFieldInUnion().
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Definition at line 3861 of file Expr.h.
References getInitializedFieldInUnion().
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Retrieve the set of initializers.
Definition at line 3792 of file Expr.h.
References clang::ASTVector< T >::data().
Referenced by setArrayFiller(), and TryConstructorInitialization().
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Definition at line 3882 of file Expr.h.
Referenced by clang::InitializationSequence::Perform(), and TryListInitialization().
SourceLocation InitListExpr::getLocEnd | ( | ) | const |
Definition at line 1967 of file Expr.cpp.
References End, getSyntacticForm(), clang::SourceLocation::isInvalid(), clang::ASTVector< T >::rbegin(), clang::ASTVector< T >::rend(), and S.
SourceLocation InitListExpr::getLocStart | ( | ) | const |
Definition at line 1949 of file Expr.cpp.
References clang::ASTVector< T >::begin(), clang::ASTVector< T >::end(), getSyntacticForm(), clang::SourceLocation::isInvalid(), and S.
Referenced by diagnoseListInit(), TryListConversion(), and TryListInitialization().
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Definition at line 3789 of file Expr.h.
References clang::ASTVector< T >::size().
Referenced by clang::Sema::DeduceAutoType(), DeduceFromInitializerList(), diagnoseListInit(), clang::CodeGen::CodeGenFunction::EmitInitListLValue(), getInit(), GetNumNonZeroBytesInInit(), clang::Expr::isConstantInitializer(), isStringLiteralInit(), clang::InitializationSequence::RewrapReferenceInitList(), setArrayFiller(), setInit(), TryConstructorInitialization(), TryInitializerListConstruction(), TryListConversion(), TryListInitialization(), TryReferenceListInitialization(), TryValueInitialization(), and clang::ento::ExprEngine::VisitInitListExpr().
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Definition at line 3884 of file Expr.h.
Referenced by clang::InitializationSequence::Perform(), and TryListInitialization().
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Definition at line 3888 of file Expr.h.
References isSemanticForm().
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Definition at line 3891 of file Expr.h.
References isSemanticForm().
Referenced by getLocEnd(), and getLocStart().
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Return true if this is an array initializer and its array "filler" has been set.
Definition at line 3850 of file Expr.h.
References getArrayFiller().
Referenced by setArrayFiller().
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Definition at line 3874 of file Expr.h.
References clang::SourceLocation::isValid().
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Definition at line 3887 of file Expr.h.
Referenced by getSemanticForm(), and getSyntacticForm().
bool InitListExpr::isStringLiteralInit | ( | ) | const |
Definition at line 1935 of file Expr.cpp.
References clang::Type::getAsArrayTypeUnsafe(), clang::ArrayType::getElementType(), getInit(), getNumInits(), clang::Expr::getType(), clang::Expr::IgnoreParens(), and clang::Type::isIntegerType().
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Definition at line 3932 of file Expr.h.
References clang::ASTVector< T >::rbegin().
Referenced by clang::ento::ExprEngine::VisitInitListExpr().
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Definition at line 3933 of file Expr.h.
References clang::ASTVector< T >::rbegin().
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Definition at line 3934 of file Expr.h.
References clang::ASTVector< T >::rend().
Referenced by clang::ento::ExprEngine::VisitInitListExpr().
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Definition at line 3935 of file Expr.h.
References clang::ASTVector< T >::rend().
void InitListExpr::reserveInits | ( | const ASTContext & | C, |
unsigned | NumInits | ||
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Reserve space for some number of initializers.
Definition at line 1904 of file Expr.cpp.
References clang::ASTVector< T >::reserve(), and clang::ASTVector< T >::size().
void InitListExpr::resizeInits | ( | const ASTContext & | Context, |
unsigned | NumInits | ||
) |
Specify the number of initializers.
If there are more than NumInits
initializers, the remaining initializers will be destroyed. If there are fewer than NumInits
initializers, NULL expressions will be added for the unknown initializers.
Definition at line 1909 of file Expr.cpp.
References clang::ASTVector< T >::resize().
Definition at line 3905 of file Expr.h.
Referenced by InitListExpr().
void InitListExpr::setArrayFiller | ( | Expr * | filler | ) |
Definition at line 1925 of file Expr.cpp.
References getInits(), getNumInits(), hasArrayFiller(), and clang::inits().
Definition at line 3804 of file Expr.h.
References clang::Expr::containsUnexpandedParameterPack(), clang::ast_matchers::expr, getNumInits(), clang::Expr::isInstantiationDependent(), clang::Expr::isTypeDependent(), and clang::Expr::isValueDependent().
Referenced by updateInit().
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Definition at line 3864 of file Expr.h.
References getInitializedFieldInUnion().
Referenced by ConstructTransparentUnion().
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Definition at line 3895 of file Expr.h.
Referenced by clang::InitializationSequence::Perform().
Expr * InitListExpr::updateInit | ( | const ASTContext & | C, |
unsigned | Init, | ||
Expr * | expr | ||
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Updates the initializer at index Init
with the new expression expr
, and returns the old expression at that location.
When Init
is out of range for this initializer list, the initializer list will be extended with NULL expressions to accommodate the new entry.
Definition at line 1913 of file Expr.cpp.
References clang::ASTVector< T >::end(), clang::ASTVector< T >::insert(), clang::Result, setInit(), and clang::ASTVector< T >::size().
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