clang
6.0.0
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Expr - This represents one expression. More...
#include "clang/AST/Expr.h"
Inherits clang::Stmt.
Inherited by clang::AbstractConditionalOperator, clang::AddrLabelExpr, clang::ArrayInitIndexExpr, clang::ArrayInitLoopExpr, clang::ArraySubscriptExpr, clang::ArrayTypeTraitExpr, clang::AsTypeExpr, clang::AtomicExpr, clang::BinaryOperator, clang::BlockExpr, clang::CallExpr, clang::CastExpr, clang::CharacterLiteral, clang::ChooseExpr, clang::CompoundLiteralExpr, clang::ConvertVectorExpr, clang::CoroutineSuspendExpr, clang::CXXBindTemporaryExpr, clang::CXXBoolLiteralExpr, clang::CXXConstructExpr, clang::CXXDefaultArgExpr, clang::CXXDefaultInitExpr, clang::CXXDeleteExpr, clang::CXXDependentScopeMemberExpr, clang::CXXFoldExpr, clang::CXXInheritedCtorInitExpr, clang::CXXNewExpr, clang::CXXNoexceptExpr, clang::CXXNullPtrLiteralExpr, clang::CXXPseudoDestructorExpr, clang::CXXScalarValueInitExpr, clang::CXXStdInitializerListExpr, clang::CXXThisExpr, clang::CXXThrowExpr, clang::CXXTypeidExpr, clang::CXXUnresolvedConstructExpr, clang::CXXUuidofExpr, clang::DeclRefExpr, clang::DependentCoawaitExpr, clang::DependentScopeDeclRefExpr, clang::DesignatedInitExpr, clang::DesignatedInitUpdateExpr, clang::ExpressionTraitExpr, clang::ExprWithCleanups, clang::ExtVectorElementExpr, clang::FloatingLiteral, clang::FunctionParmPackExpr, clang::GenericSelectionExpr, clang::GNUNullExpr, clang::ImaginaryLiteral, clang::ImplicitValueInitExpr, clang::InitListExpr, clang::IntegerLiteral, clang::LambdaExpr, clang::MaterializeTemporaryExpr, clang::MemberExpr, clang::MSPropertyRefExpr, clang::MSPropertySubscriptExpr, clang::NoInitExpr, clang::ObjCArrayLiteral, clang::ObjCAvailabilityCheckExpr, clang::ObjCBoolLiteralExpr, clang::ObjCBoxedExpr, clang::ObjCDictionaryLiteral, clang::ObjCEncodeExpr, clang::ObjCIndirectCopyRestoreExpr, clang::ObjCIsaExpr, clang::ObjCIvarRefExpr, clang::ObjCMessageExpr, clang::ObjCPropertyRefExpr, clang::ObjCProtocolExpr, clang::ObjCSelectorExpr, clang::ObjCStringLiteral, clang::ObjCSubscriptRefExpr, clang::OffsetOfExpr, clang::OMPArraySectionExpr, clang::OpaqueValueExpr, clang::OverloadExpr, clang::PackExpansionExpr, clang::ParenExpr, clang::ParenListExpr, clang::PredefinedExpr, clang::PseudoObjectExpr, clang::ShuffleVectorExpr, clang::SizeOfPackExpr, clang::StmtExpr, clang::StringLiteral, clang::SubstNonTypeTemplateParmExpr, clang::SubstNonTypeTemplateParmPackExpr, clang::TypeTraitExpr, clang::TypoExpr, clang::UnaryExprOrTypeTraitExpr, clang::UnaryOperator, and clang::VAArgExpr.
Classes | |
class | Classification |
The return type of classify(). More... | |
struct | EvalResult |
EvalResult is a struct with detailed info about an evaluated expression. More... | |
struct | EvalStatus |
EvalStatus is a struct with detailed info about an evaluation in progress. More... | |
Public Member Functions | |
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) 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 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 (llvm::APSInt &Result, const ASTContext &Ctx, SideEffectsKind AllowSideEffects=SE_NoSideEffects) const |
EvaluateAsInt - Return true if this is a constant which we can fold and convert to an integer, using any crazy technique that we want to. 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... | |
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 | 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 |
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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 | getLocStart () const LLVM_READONLY |
SourceLocation | getLocEnd () 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 |
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, 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 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) |
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static void | addStmtClass (const StmtClass s) |
static void | EnableStatistics () |
static void | PrintStats () |
Protected Member Functions | |
Expr (StmtClass SC, QualType T, ExprValueKind VK, ExprObjectKind OK, bool TD, bool VD, bool ID, bool ContainsUnexpandedParameterPack) | |
Expr (StmtClass SC, EmptyShell) | |
Construct an empty expression. More... | |
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void * | operator new (size_t bytes) noexcept |
void | operator delete (void *data) noexcept |
Stmt (StmtClass SC, EmptyShell) | |
Construct an empty statement. More... | |
Additional Inherited Members | |
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enum | { NumStmtBits = 8 } |
enum | { NumExprBits = 17 } |
enum | APFloatSemantics { IEEEhalf, IEEEsingle, IEEEdouble, x87DoubleExtended, IEEEquad, PPCDoubleDouble } |
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union { | |
StmtBitfields StmtBits | |
CompoundStmtBitfields CompoundStmtBits | |
IfStmtBitfields IfStmtBits | |
ExprBitfields ExprBits | |
CharacterLiteralBitfields CharacterLiteralBits | |
FloatingLiteralBitfields FloatingLiteralBits | |
UnaryExprOrTypeTraitExprBitfields UnaryExprOrTypeTraitExprBits | |
DeclRefExprBitfields DeclRefExprBits | |
CastExprBitfields CastExprBits | |
CallExprBitfields CallExprBits | |
ExprWithCleanupsBitfields ExprWithCleanupsBits | |
PseudoObjectExprBitfields PseudoObjectExprBits | |
ObjCIndirectCopyRestoreExprBitfields ObjCIndirectCopyRestoreExprBits | |
InitListExprBitfields InitListExprBits | |
TypeTraitExprBitfields TypeTraitExprBits | |
CoawaitExprBitfields CoawaitBits | |
}; | |
Expr - This represents one expression.
Note that Expr's are subclasses of Stmt. This allows an expression to be transparently used any place a Stmt is required.
Enumeration used to describe the kind of Null pointer constant returned from isNullPointerConstant()
.
Enumerator | |
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NPCK_NotNull | Expression is not a Null pointer constant. |
NPCK_ZeroExpression | Expression is a Null pointer constant built from a zero integer expression that is not a simple, possibly parenthesized, zero literal. C++ Core Issue 903 will classify these expressions as "not pointers" once it is adopted. http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_active.html#903 |
NPCK_ZeroLiteral | Expression is a Null pointer constant built from a literal zero. |
NPCK_CXX11_nullptr | Expression is a C++11 nullptr. |
NPCK_GNUNull | Expression is a GNU-style __null constant. |
Enumeration used to describe how isNullPointerConstant()
should cope with value-dependent expressions.
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inlineprotected |
Definition at line 110 of file Expr.h.
Referenced by computeDeclRefDependence(), clang::IntegerLiteral::Create(), clang::PseudoObjectExpr::Create(), clang::ObjCArrayLiteral::CreateEmpty(), clang::OffsetOfExpr::CreateEmpty(), clang::SubstNonTypeTemplateParmPackExpr::getArgumentPack(), clang::DesignatedInitExpr::Designator::getFieldName(), clang::OverloadExpr::getNamingClass(), clang::ObjCPropertyRefExpr::getReceiverType(), clang::UserDefinedLiteral::getUDSuffix(), and clang::MaterializeTemporaryExpr::setExtendingDecl().
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inlineexplicitprotected |
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inline |
Classify - Classify this expression according to the C++11 expression taxonomy.
C++11 defines ([basic.lval]) a new taxonomy of expressions to replace the old lvalue vs rvalue. This function determines the type of expression this is. There are three expression types:
Definition at line 377 of file Expr.h.
Referenced by clang::canTypeidThrow(), ClassifyLValue(), TryReferenceInit(), and TryReferenceInitializationCore().
Expr::LValueClassification Expr::ClassifyLValue | ( | ASTContext & | Ctx | ) | const |
Reasons why an expression might not be an l-value.
Definition at line 649 of file ExprClassification.cpp.
References clang::Expr::Classification::CL_AddressableVoid, clang::Expr::Classification::CL_ArrayTemporary, clang::Expr::Classification::CL_ClassTemporary, clang::Expr::Classification::CL_DuplicateVectorComponents, clang::Expr::Classification::CL_Function, clang::Expr::Classification::CL_LValue, clang::Expr::Classification::CL_MemberFunction, clang::Expr::Classification::CL_ObjCMessageRValue, clang::Expr::Classification::CL_PRValue, clang::Expr::Classification::CL_SubObjCPropertySetting, clang::Expr::Classification::CL_Void, clang::Expr::Classification::CL_XValue, Classify(), clang::Expr::Classification::getKind(), LV_ArrayTemporary, LV_ClassTemporary, LV_DuplicateVectorComponents, LV_IncompleteVoidType, LV_InvalidExpression, LV_InvalidMessageExpression, LV_MemberFunction, LV_NotObjectType, LV_SubObjCPropertySetting, and LV_Valid.
Referenced by isBoundMemberFunction(), and clang::InitializationSequence::Perform().
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inline |
ClassifyModifiable - Classify this expression according to the C++11 expression taxonomy, and see if it is valid on the left side of an assignment.
This function extends classify in that it also tests whether the expression is modifiable (C99 6.3.2.1p1).
Loc | A source location that might be filled with a relevant location if the expression is not modifiable. |
Definition at line 389 of file Expr.h.
Referenced by isModifiableLvalue().
Definition at line 853 of file Expr.h.
References clang::Stmt::getStmtClass().
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inline |
Whether this expression contains an unexpanded parameter pack (for C++11 variadic templates).
Given the following function template:
The expressions args
and static_cast<Types&&>(args)
both contain parameter packs.
Definition at line 214 of file Expr.h.
Referenced by clang::Sema::ActOnCXXFoldExpr(), clang::Sema::ActOnOpenMPDistScheduleClause(), clang::Sema::ActOnOpenMPFinalClause(), clang::Sema::ActOnOpenMPIfClause(), clang::Sema::ActOnOpenMPLinearClause(), clang::Sema::ActOnOpenMPScheduleClause(), clang::AtomicExpr::AtomicExpr(), clang::CallExpr::CallExpr(), clang::Sema::CheckPackExpansion(), clang::Sema::containsUnexpandedParameterPacks(), clang::OffsetOfExpr::CreateEmpty(), clang::CXXConstructExpr::CXXConstructExpr(), clang::CXXNewExpr::CXXNewExpr(), clang::DesignatedInitExpr::Designator::getFieldName(), clang::CXXUnresolvedConstructExpr::getLocStart(), getPrivateItem(), clang::ObjCPropertyRefExpr::getReceiverType(), hasOnlyNonStaticMemberFunctions(), clang::LambdaExpr::isMutable(), clang::ParenListExpr::ParenListExpr(), clang::DependentSizedExtVectorType::Profile(), clang::InitListExpr::setInit(), and clang::ShuffleVectorExpr::ShuffleVectorExpr().
bool Expr::EvaluateAsBooleanCondition | ( | bool & | Result, |
const ASTContext & | Ctx | ||
) | const |
EvaluateAsBooleanCondition - Return true if this is a constant which we we can fold and convert to a boolean condition using any crazy technique that we want to, even if the expression has side-effects.
Definition at line 10076 of file ExprConstant.cpp.
References EvaluateAsRValue(), and HandleConversionToBool().
Referenced by CheckNonNullExpr(), and FindTypeTagExpr().
bool Expr::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.
Definition at line 10103 of file ExprConstant.cpp.
References EvaluateAsRValue(), and hasUnacceptableSideEffect().
bool Expr::EvaluateAsInitializer | ( | APValue & | Result, |
const ASTContext & | Ctx, | ||
const VarDecl * | VD, | ||
SmallVectorImpl< PartialDiagnosticAt > & | Notes | ||
) | const |
EvaluateAsInitializer - Evaluate an expression as if it were the initializer of the given declaration.
Returns true if the initializer can be folded to a constant, and produces any relevant notes. In C++11, notes will be produced if the expression is not a constant expression.
Definition at line 10130 of file ExprConstant.cpp.
References CheckConstantExpression(), clang::Expr::EvalStatus::Diag, EvaluateInPlace(), clang::ASTContext::getLangOpts(), clang::Decl::getLocation(), clang::ValueDecl::getType(), clang::VarDecl::hasLocalStorage(), clang::Expr::EvalStatus::HasSideEffects, clang::VarDecl::isConstexpr(), isRecordType(), and clang::Type::isReferenceType().
bool Expr::EvaluateAsInt | ( | llvm::APSInt & | Result, |
const ASTContext & | Ctx, | ||
SideEffectsKind | AllowSideEffects = SE_NoSideEffects |
||
) | const |
EvaluateAsInt - Return true if this is a constant which we can fold and convert to an integer, using any crazy technique that we want to.
Definition at line 10089 of file ExprConstant.cpp.
References EvaluateAsRValue(), and hasUnacceptableSideEffect().
Referenced by AddVariableConstraints(), AnalyzeBitFieldAssignment(), CheckOpenMPLoop(), checkSimdlenSafelenSpecified(), clang::CodeGen::CodeGenFunction::ConstantFoldsToSimpleInteger(), clang::CodeGen::CodeGenFunction::EmitARMBuiltinExpr(), isConstantInitializer(), and clang::ento::ExprEngine::VisitOffsetOfExpr().
bool Expr::EvaluateAsLValue | ( | EvalResult & | Result, |
const ASTContext & | Ctx | ||
) | const |
EvaluateAsLValue - Evaluate an expression to see if we can fold it to an lvalue with link time known address, with no side-effects.
Definition at line 10117 of file ExprConstant.cpp.
References CheckLValueConstantExpression(), EvaluateLValue(), and clang::ASTContext::getLValueReferenceType().
Referenced by isConstantInitializer(), clang::CodeGen::CodeGenFunction::tryEmitAsConstant(), and clang::CodeGen::ConstantEmitter::tryEmitPrivate().
bool Expr::EvaluateAsRValue | ( | EvalResult & | Result, |
const ASTContext & | Ctx | ||
) | 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.
EvaluateAsRValue - Return true if this is a constant which we can fold using any crazy technique (that has nothing to do with language standards) that we want to.
If this function returns true, it returns the folded constant in Result. If the expression is a glvalue, an lvalue-to-rvalue conversion will be applied.
If this function returns true, it returns the folded constant in Result. If this expression is a glvalue, an lvalue-to-rvalue conversion will be applied to the result.
Definition at line 10067 of file ExprConstant.cpp.
References EvaluateAsRValue(), and FastEvaluateAsRValue().
Referenced by CheckEvalInICE(), clang::CodeGen::CodeGenFunction::EmitBuiltinExpr(), EvaluateBuiltinConstantP(), clang::Sema::FillInlineAsmIdentifierInfo(), GetExprRange(), isNullPointerValueTemplateArgument(), clang::CodeGen::CodeGenFunction::ShouldNullCheckClassCastValue(), clang::CodeGen::CodeGenFunction::tryEmitAsConstant(), and clang::CodeGen::ConstantEmitter::tryEmitPrivate().
void Expr::EvaluateForOverflow | ( | const ASTContext & | Ctx | ) | const |
Definition at line 10191 of file ExprConstant.cpp.
References EvaluateAsRValue(), and FastEvaluateAsRValue().
APSInt Expr::EvaluateKnownConstInt | ( | const ASTContext & | Ctx, |
SmallVectorImpl< PartialDiagnosticAt > * | Diag = nullptr |
||
) | const |
EvaluateKnownConstInt - Call EvaluateAsRValue and return the folded integer.
This must be called on an expression that constant folds to an integer.
Definition at line 10179 of file ExprConstant.cpp.
References Diag(), and EvaluateAsRValue().
Referenced by clang::Sema::ActOnOpenMPCriticalDirective(), EvaluateSwitch(), isNullPointerConstant(), IsStandardConversion(), mergeExceptionSpecs(), shouldAddCase(), tryEvaluateBuiltinObjectSize(), TryOCLZeroEventInitialization(), and TryOCLZeroQueueInitialization().
bool Expr::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.
Returns true if the expression could be folded to a constant.
Definition at line 10724 of file ExprConstant.cpp.
Given an expression of bound-member type, find the type of the member.
Returns null if this is an overloaded bound member expression.
Definition at line 2410 of file Expr.cpp.
References clang::Type::castAs(), hasPlaceholderType(), IgnoreParens(), clang::Type::isFunctionType(), and clang::ast_matchers::type.
Referenced by clang::CallExpr::getCallReturnType().
const CXXRecordDecl * Expr::getBestDynamicClassType | ( | ) | const |
For an expression of class type or pointer to class type, return the most derived class decl the expression is known to refer to.
If this expression is a cast, this method looks through it to find the most derived decl that can be inferred from the expression. This is valid because derived-to-base conversions have undefined behavior if the object isn't dynamically of the derived type.
Definition at line 63 of file Expr.cpp.
Referenced by clang::CodeGen::CodeGenFunction::EmitCXXMemberOrOperatorMemberCallExpr(), and clang::CXXMethodDecl::getDevirtualizedMethod().
const Expr * Expr::getBestDynamicClassTypeExpr | ( | ) | const |
Get the inner expression that determines the best dynamic class.
If this is a prvalue, we guarantee that it is of the most-derived type for the object itself.
Definition at line 38 of file Expr.cpp.
Referenced by clang::CXXMethodDecl::getDevirtualizedMethod().
SourceLocation Expr::getExprLoc | ( | ) | const |
getExprLoc - Return the preferred location for the arrow when diagnosing a problem with a generic expression.
Definition at line 216 of file Expr.cpp.
References clang::Stmt::getStmtClass(), and clang::Stmt::NoStmtClass.
Referenced by clang::Sema::ActOnFinishFullExpr(), clang::Sema::ActOnOpenMPAtomicDirective(), clang::Sema::ActOnOpenMPIsDevicePtrClause(), clang::Sema::ActOnSEHExceptBlock(), clang::Sema::ActOnStartLinkageSpecification(), AddVariableConstraints(), AnalyzeBitFieldAssignment(), buildCapture(), buildCaptureDecl(), clang::Sema::BuildCXXNoexceptExpr(), clang::Sema::BuildOverloadedArrowExpr(), clang::Sema::BuildOverloadedCallExpr(), buildPostUpdate(), BuildRecoveryCallExpr(), clang::Sema::BuildResolvedCallExpr(), CheckedIntArithmetic(), CheckForDanglingReferenceOrPointer(), CheckForReference(), checkIndirectCopyRestoreSource(), CheckKeyForObjCARCConversion(), CheckMapClauseExpressionBase(), CheckMapConflicts(), clang::Sema::CheckObjCConversion(), clang::Sema::CheckOMPThreadPrivateDecl(), CheckOpenMPLoop(), clang::Sema::CheckSubscriptingKind(), CheckTemplateArgumentAddressOfObjectOrFunction(), CheckTemplateArgumentPointerToMember(), clang::Sema::CodeCompleteCall(), clang::Sema::DeduceFunctionTypeFromReturnExpr(), clang::Sema::DiagnoseAlwaysNonNullPointer(), clang::Sema::DiagnoseAssignmentEnum(), DiagnoseImpCast(), clang::Sema::DiagnoseMultipleUserDefinedConversion(), diagnoseNoViableConversion(), DiagnoseNullConversion(), diagnoseObjCARCConversion(), diagnoseRetainCycle(), clang::CodeGen::ConstantEmitter::emitAbstract(), clang::CodeGen::CodeGenFunction::EmitCXXMemberOrOperatorCall(), clang::CodeGen::CodeGenFunction::EmitCXXMemberOrOperatorMemberCallExpr(), clang::CodeGen::CodeGenFunction::EmitDynamicCast(), EmitObjectDelete(), clang::CodeGen::CodeGenFunction::EmitOMPLinearClauseInit(), clang::CodeGen::CodeGenFunction::EmitScalarInit(), EvaluateAsRValue(), EvaluateCPlusPlus11IntegralConstantExpr(), fillAttributedTypeLoc(), findCompleteObject(), clang::CodeGen::CodeGenFunction::GenerateCXXGlobalVarDeclInitFunc(), clang::OMPArraySectionExpr::getExprLoc(), clang::CXXMemberCallExpr::getExprLoc(), clang::OpaqueValueExpr::getExprLoc(), getPrivateItem(), getSizeOfArgType(), GetTypeOfFunction(), clang::consumed::ConsumedStmtVisitor::handleCall(), HandleConstructorCall(), HandleLValueArrayAdjustment(), HandleLValueComplexElement(), HasLocalVariableExternalStorage(), HasSideEffects(), isIdenticalStmt(), isLibstdcxxPointerReturnFalseHack(), IsNonNegativeIntegerValue(), isNullPointerValueTemplateArgument(), IsTailPaddedMemberArray(), isUnusedResultAWarning(), IsUserDefinedConversion(), clang::Sema::MakeFullDiscardedValueExpr(), clang::Sema::MakeFullExpr(), NoteLValueLocation(), recordConversion(), rewriteToNumericBoxedExpression(), clang::CodeGen::CodeGenFunction::ShouldNullCheckClassCastValue(), tryEvaluateBuiltinObjectSize(), TryUserDefinedConversion(), warnOnLifetimeExtension(), and clang::threadSafety::ThreadSafetyHandler::~ThreadSafetyHandler().
const ObjCPropertyRefExpr * Expr::getObjCProperty | ( | ) | const |
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getObjectKind - The object kind that this expression produces.
Object kinds are meaningful only for expressions that yield an l-value or x-value.
Definition at line 412 of file Expr.h.
Referenced by buildCapture(), buildCaptureDecl(), CheckIncrementDecrementOperand(), clang::PseudoObjectExpr::Create(), clang::Sema::CXXCheckConditionalOperands(), clang::DesignatedInitExpr::Designator::getFieldName(), clang::LambdaExpr::isMutable(), and clang::TreeTransform< Derived >::RebuildCXXOperatorCallExpr().
Decl * Expr::getReferencedDeclOfCallee | ( | ) |
Definition at line 1224 of file Expr.cpp.
References IgnoreParenCasts(), and IgnoreParenImpCasts().
Referenced by clang::CallExpr::getCalleeDecl().
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FieldDecl * Expr::getSourceBitField | ( | ) |
If this expression refers to a bit-field, retrieve the declaration of that bit-field.
Note that this returns a non-null pointer in subtly different places than refersToBitField returns true. In particular, this can return a non-null pointer even for r-values loaded from bit-fields, but it will return null for a conditional bit-field.
Definition at line 3433 of file Expr.cpp.
Referenced by AnalyzeAssignment().
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Definition at line 128 of file Expr.h.
Referenced by clang::Sema::ActOnCastExpr(), clang::Sema::ActOnFinishSwitchStmt(), clang::Sema::ActOnIndirectGotoStmt(), clang::Sema::ActOnObjCAtSynchronizedOperand(), clang::Sema::ActOnOpenMPAtomicDirective(), clang::Sema::ActOnOpenMPLinearClause(), clang::Sema::ActOnSEHExceptBlock(), clang::Sema::ActOnStartCXXMemberReference(), addOrSubLValueAsInteger(), AddVariableConstraints(), AdjustFunctionParmAndArgTypesForDeduction(), AnalyzeBitFieldAssignment(), AnalyzeComparison(), AnalyzeImplicitConversions(), clang::Sema::BuildAnonymousStructUnionMemberReference(), clang::Sema::BuildBinOp(), clang::Sema::BuildCallToMemberFunction(), buildCapture(), buildCaptureDecl(), clang::Sema::BuildExpressionTrait(), clang::Sema::BuildForRangeBeginEndCall(), clang::Sema::BuildInstanceMessage(), clang::Sema::BuildMemberReferenceExpr(), buildMemcpyForAssignmentOp(), BuildNonArrayForRange(), clang::Sema::BuildObjCAtThrowStmt(), clang::Sema::BuildObjCBridgedCast(), clang::Sema::BuildObjCNumericLiteral(), clang::Sema::BuildOverloadedArrowExpr(), BuildOverloadedBinOp(), CanThrow(), clang::canTypeidThrow(), CastForMoving(), clang::Sema::CheckAdditionOperands(), CheckAggExprForMemSetUse(), checkArithmeticBinOpPointerOperands(), checkArithmeticIncompletePointerType(), checkArithmeticOpPointerOperand(), CheckArrow(), clang::Sema::CheckAssignmentOperands(), checkBuiltinArgument(), clang::Sema::CheckCastAlign(), checkCondition(), CheckConditionalOperand(), CheckConditionalOperator(), checkConditionalVoidType(), CheckConvertedConstantExpression(), CheckCXX98CompatAccessibleCopy(), clang::Sema::checkDeclIsAllowedInOpenMPTarget(), CheckedIntArithmetic(), checkElementNonNil(), checkEnumComparison(), clang::Sema::CheckExceptionSpecCompatibility(), clang::Sema::checkExceptionSpecification(), clang::Sema::CheckExtVectorCast(), CheckFallThroughForBody(), CheckICE(), CheckImplicitArgumentConversions(), CheckImplicitConversion(), CheckIncrementDecrementOperand(), CheckIndirectionOperand(), checkIntToPointerCast(), CheckKeyForObjCARCConversion(), CheckLiteralType(), CheckMapClauseExpressionBase(), clang::Sema::CheckMemberOperatorAccess(), clang::Sema::CheckMemberPointerConversion(), clang::ento::mpi::MPIChecker::checkMissingWaits(), CheckMoveOnConstruction(), CheckNonNullExpr(), CheckObjCBridgeCFCast(), CheckObjCBridgeNSCast(), clang::Sema::CheckObjCBridgeRelatedCast(), CheckObjCCollectionLiteralElement(), checkObjCCollectionLiteralElement(), clang::Sema::CheckObjCConversion(), clang::Sema::CheckObjCForCollectionOperand(), checkObjCPointerIntrospection(), checkOpenCLConditionVector(), checkOpenCLEnqueueIntType(), checkOpenCLEnqueueVariadicArgs(), checkOpenCLPipeArg(), checkOpenCLPipePacketType(), clang::Sema::CheckPlaceholderExpr(), clang::Sema::CheckPointerConversion(), checkPointerIntegerMismatch(), clang::Sema::CheckSubscriptingKind(), CheckTautologicalComparison(), CheckTemplateArgumentAddressOfObjectOrFunction(), CheckTemplateArgumentIsCompatibleWithParameter(), CheckTemplateArgumentPointerToMember(), clang::Sema::CheckTollFreeBridgeCast(), clang::Sema::CheckTollFreeBridgeStaticCast(), clang::Sema::checkUnsafeExprAssigns(), ClassifyConditional(), clang::Sema::CodeCompleteCall(), clang::Sema::CodeCompleteCase(), clang::Sema::CodeCompleteMemberReferenceExpr(), clang::Sema::CodeCompleteObjCInstanceMessage(), computeDeclRefDependence(), conjureOffsetSymbolOnLocation(), clang::ento::SymbolManager::conjureSymbol(), clang::ento::SValBuilder::conjureSymbolVal(), CopyObject(), clang::CXXBindTemporaryExpr::Create(), createBinOpInfoFromIncDec(), clang::Sema::CreateBuiltinArraySubscriptExpr(), clang::Sema::CreateBuiltinBinOp(), createReferenceTemporary(), clang::Sema::CXXCheckConditionalOperands(), clang::Sema::DeduceAutoType(), clang::Sema::DeduceFunctionTypeFromReturnExpr(), DeduceNonTypeTemplateArgument(), DeduceNullPtrTemplateArgument(), DeduceTemplateArgumentsFromCallArgument(), clang::DesignatedInitUpdateExpr::DesignatedInitUpdateExpr(), clang::TypeOfExprType::desugar(), diagnoseArithmeticOnFunctionPointer(), diagnoseArithmeticOnTwoFunctionPointers(), clang::Sema::DiagnoseAutoDeductionFailure(), DiagnoseBinOpPrecedence(), DiagnoseForRangeConstVariableCopies(), DiagnoseForRangeVariableCopies(), DiagnoseImpCast(), clang::Sema::DiagnoseMultipleUserDefinedConversion(), diagnoseObjCARCConversion(), diagnosePointerIncompatibility(), DiagnoseReinterpretUpDownCast(), DiagnoseSelfAssignment(), clang::Sema::DiagnoseSelfMove(), diagnoseStringPlusChar(), diagnoseStringPlusInt(), diagnoseUnreadableFields(), doRewriteToUTF8StringBoxedExpressionHelper(), clang::CodeGen::CodeGenFunction::EmitAggExpr(), clang::CodeGen::CodeGenFunction::EmitAggExprToLValue(), clang::CodeGen::CodeGenFunction::EmitAnyExprToExn(), clang::CodeGen::CodeGenFunction::EmitARCExtendBlockObject(), clang::CodeGen::CodeGenFunction::EmitARCRetainAutoreleaseScalarExpr(), clang::CodeGen::CodeGenFunction::EmitARCRetainScalarExpr(), clang::CodeGen::CodeGenFunction::EmitARCStoreStrong(), clang::CodeGen::CodeGenFunction::EmitAtomicInit(), emitBadConversionNotes(), EmitCheckedMixedSignMultiply(), EmitCommonNeonSISDBuiltinExpr(), clang::CodeGen::CodeGenFunction::EmitComplexExpr(), clang::CodeGen::CodeGenFunction::EmitComplexExprIntoLValue(), clang::CodeGen::CodeGenFunction::EmitConditionalOperatorLValue(), emitCXXDestructor(), clang::CodeGen::CodeGenFunction::EmitCXXMemberOrOperatorMemberCallExpr(), EmitCXXNewAllocSize(), clang::CodeGen::CodeGenFunction::EmitDynamicCast(), emitEmptyOrdered(), clang::CodeGen::CodeGenFunction::EmitMSVCBuiltinExpr(), emitNumThreadsForTargetDirective(), clang::CodeGen::CodeGenFunction::EmitNVPTXBuiltinExpr(), clang::CodeGen::CodeGenFunction::EmitObjCIsaExpr(), clang::CodeGen::CodeGenFunction::EmitObjCThrowOperand(), EmitOMPAtomicCaptureExpr(), EmitOMPAtomicReadExpr(), clang::CodeGen::CodeGenFunction::EmitOMPDistributeLoop(), clang::CodeGen::CodeGenFunction::EmitOMPLinearClauseInit(), clang::CodeGen::CodeGenFunction::EmitOMPWorksharingLoop(), emitPointerArithmetic(), clang::CodeGen::CodeGenFunction::EmitScalarExpr(), clang::CodeGen::emitSingleReductionCombiner(), emitTaskPrivateMappingFunction(), clang::CodeGen::emitThreadPrivateVarInit(), clang::CodeGen::CodeGenFunction::EmitVAArg(), clang::CodeGen::CodeGenFunction::EmitWebAssemblyBuiltinExpr(), emitWritebackArg(), EvalAddr(), EvalAndBitcastToAPInt(), clang::ento::StoreManager::evalDerivedToBase(), Evaluate(), EvaluateArray(), EvaluateAsRValue(), EvaluateAtomic(), EvaluateBuiltinClassifyType(), EvaluateBuiltinConstantP(), EvaluateComplex(), EvaluateCPlusPlus11IntegralConstantExpr(), EvaluateFloat(), EvaluateInPlace(), EvaluateInteger(), EvaluateIntegerOrLValue(), EvaluateLValue(), evaluateLValueAsAllocSize(), EvaluateMemberPointer(), EvaluateObjectArgument(), EvaluatePointer(), EvaluateRecord(), EvaluateTemporary(), EvaluateVector(), EvaluateVoid(), FastEvaluateAsRValue(), clang::Sema::FillInlineAsmIdentifierInfo(), clang::Sema::FindAssociatedClassesAndNamespaces(), clang::Sema::FindCompositePointerType(), finishContextualImplicitConversion(), FinishForRangeVarDecl(), clang::Sema::GatherArgumentsForCall(), clang::CodeGen::CodeGenFunction::GenerateObjCAtomicGetterCopyHelperFunction(), clang::CodeGen::CodeGenFunction::generateObjCSetterBody(), GetAlignOfExpr(), clang::CXXNewExpr::getAllocatedType(), getArrayIndexingBound(), getAsInt32(), clang::OMPArraySectionExpr::getBaseOriginalType(), clang::CallExpr::getCallReturnType(), GetCFNumberSize(), clang::CXXDeleteExpr::getDestroyedType(), clang::CXXMethodDecl::getDevirtualizedMethod(), GetExprType(), clang::CXXInstanceCall::getExtraInvalidatedValues(), clang::BlockExpr::getFunctionType(), getIncrementedVar(), clang::ento::ExprEngine::getInitialState(), GetIntrinsic(), clang::MemberExpr::getLocEnd(), clang::CodeGen::CodeGenModule::getMemberPointerConstant(), clang::StandardConversionSequence::getNarrowingKind(), clang::TemplateArgument::getNonTypeTemplateArgumentType(), clang::ExtVectorElementExpr::getNumElements(), getObjectType(), clang::CodeGen::CGOpenCLRuntime::getPipeElemAlign(), clang::CodeGen::CGOpenCLRuntime::getPipeElemSize(), clang::CXXMemberCallExpr::getRecordDecl(), clang::CodeGen::CodeGenFunction::ConstantEmission::getReferenceLValue(), GetReturnType(), getReturnTypeForMethod(), clang::CallEventManager::getSimpleCall(), getSizeOfArgType(), getStrlenExprArg(), getThrowFn(), clang::ASTContext::getTypeOfExprType(), clang::ento::StringRegion::getValueType(), clang::ento::ObjCStringRegion::getValueType(), clang::ento::CompoundLiteralRegion::getValueType(), clang::ento::CXXTempObjectRegion::getValueType(), clang::AtomicExpr::getValueType(), clang::Sema::getVariadicCallType(), HandleBaseToDerivedCast(), HandleConstructorCall(), handleIntIntBinOp(), handleLValueToRValueConversion(), clang::ento::ExprEngine::handleLVectorSplat(), HandleMemberPointerAccess(), clang::Sema::hasCStrMethod(), hasDefinition(), HasEnumType(), hasIsEqualMethod(), clang::Sema::IgnoredValueConversions(), ignorePointerCastsAndParens(), clang::BadConversionSequence::init(), clang::Sema::InvalidLogicalVectorOperands(), clang::CXXDynamicCastExpr::isAlwaysNull(), isBlockPointer(), isBlockVarRef(), isCheapEnoughToEvaluateUnconditionally(), isConstantInitializer(), IsImplicitBoolFloatConversion(), isImplicitThis(), isIntOrBool(), isInvalidICRSource(), isKnownToHaveUnsignedValue(), clang::LambdaExpr::isMutable(), clang::BinaryOperator::isNullPointerArithmeticExtension(), isNullPointerConstant(), isNullPointerValueTemplateArgument(), isPointerToConst(), isShiftOverflow(), isSimpleZero(), IsStandardConversion(), IsStdFunction(), clang::InitListExpr::isStringLiteralInit(), IsTailPaddedMemberArray(), isTemporaryObject(), isThrowCaught(), clang::InitListExpr::isTransparent(), IsTransparentUnionStandardConversion(), isTrivialFiller(), isUnusedResultAWarning(), IsUserDefinedConversion(), isValidOrderingForOp(), LookupMethodInReceiverType(), clang::ento::SValBuilder::makeIntVal(), maybeAdjustInterfaceForSubscriptingCheck(), clang::Sema::MaybeBindToTemporary(), maybeRebuildARCConsumingStmt(), clang::CodeGen::CodeGenModule::maybeSetTrivialComdat(), clang::Sema::NoteAllOverloadCandidates(), ObjCEnumerationCollection(), objectifyExpr(), clang::ento::ConditionBRVisitor::patternMatch(), clang::InitializationSequence::Perform(), clang::Sema::PerformContextualImplicitConversion(), performLifetimeExtension(), clang::Sema::PerformMemberExprBaseConversion(), clang::Sema::PerformMoveOrCopyInitialization(), clang::Sema::prepareVectorSplat(), print_elem(), printExprAsWritten(), PrintFloatingLiteral(), clang::ento::ExprEngine::ProcessInitializer(), clang::ento::ExprEngine::ProcessTemporaryDtor(), clang::TreeTransform< Derived >::RebuildCXXForRangeStmt(), clang::TreeTransform< Derived >::RebuildCXXOperatorCallExpr(), clang::TreeTransform< Derived >::RebuildCXXPseudoDestructorExpr(), clang::TreeTransform< Derived >::RebuildExtVectorElementExpr(), clang::TreeTransform< Derived >::RebuildObjCIvarRefExpr(), clang::TreeTransform< Derived >::RebuildObjCMessageExpr(), clang::TreeTransform< Derived >::RebuildObjCPropertyRefExpr(), recordFixedType(), RecoverCastedSymbol(), clang::Sema::ResolveAddressOfOverloadedFunction(), ResolveConstructorOverload(), rewriteToNumberLiteral(), rewriteToNumericBoxedExpression(), scanToNextArgument(), SemaBuiltinCommitRWPipe(), SemaBuiltinPipePackets(), SemaBuiltinReserveRWPipe(), SemaBuiltinRWPipe(), clang::Sema::SemaBuiltinShuffleVector(), clang::Sema::SemaConvertVectorExpr(), SemaOpenCLBuiltinEnqueueKernel(), SemaOpenCLBuiltinToAddr(), clang::CodeGen::CodeGenFunction::OpaqueValueMappingData::shouldBindAsLValue(), shouldEmitSeparateBlockRetain(), shouldExtendReceiverForInnerPointerMessage(), clang::CodeGen::CodeGenFunction::ShouldNullCheckClassCastValue(), sumOffsets(), clang::TreeTransform< Derived >::TransformCXXNamedCastExpr(), clang::TreeTransform< Derived >::TransformDependentScopeDeclRefExpr(), TryClassUnification(), tryEmitARCCopyWeakInit(), tryEmitARCRetainLoadOfScalar(), clang::CodeGen::CodeGenFunction::tryEmitAsConstant(), tryEmitFMulAdd(), TryImplicitConversion(), TryListConversion(), TryListInitialization(), TryLValueToRValueCast(), tryObjCWritebackConversion(), TryOCLSamplerInitialization(), TryReferenceInit(), TryReferenceInitialization(), TryReferenceListInitialization(), TryRefInitWithConversionFunction(), TryStaticReferenceDowncast(), tryToConvertMemberExprToDeclRefExpr(), TryUserDefinedConversion(), clang::ento::ExprEngine::VisitArraySubscriptExpr(), clang::ento::ExprEngine::VisitBlockExpr(), clang::ento::ConditionBRVisitor::VisitConditionVariable(), clang::ento::ExprEngine::VisitCXXConstructExpr(), clang::ASTNodeImporter::VisitCXXNewExpr(), clang::ento::ExprEngine::VisitCXXNewExpr(), clang::ASTNodeImporter::VisitCXXTemporaryObjectExpr(), clang::ento::ExprEngine::VisitCXXThisExpr(), clang::ASTNodeImporter::VisitInitListExpr(), clang::ento::ExprEngine::VisitInitListExpr(), clang::ento::ExprEngine::VisitLogicalExpr(), clang::ASTNodeImporter::VisitOffsetOfExpr(), clang::ento::ExprEngine::VisitOffsetOfExpr(), warnBracedScalarInit(), and WidenIterationCount().
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getValueKind - The value kind that this expression produces.
Definition at line 405 of file Expr.h.
Referenced by clang::Sema::ActOnConditionalOp(), CheckTemplateArgumentPointerToMember(), clang::Sema::checkUnknownAnyCast(), clang::Sema::CXXCheckConditionalOperands(), clang::DesignatedInitExpr::Designator::getFieldName(), clang::MaterializeTemporaryExpr::isBoundToLvalueReference(), clang::LambdaExpr::isMutable(), maybeRebuildARCConsumingStmt(), tryEmitARCCopyWeakInit(), TryReferenceInitializationCore(), and tryToConvertMemberExprToDeclRefExpr().
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getValueKindForType - Given a formal return or parameter type, give its value kind.
Definition at line 395 of file Expr.h.
References clang::Type::getAs(), clang::VK_LValue, clang::VK_RValue, and clang::VK_XValue.
Referenced by clang::Sema::BuildCXXTypeConstructExpr(), EvaluateBinaryTypeTrait(), and clang::TreeTransform< Derived >::RebuildShuffleVectorExpr().
hasAnyTypeDependentArguments - Determines if any of the expressions in Exprs is type-dependent.
Definition at line 2745 of file Expr.cpp.
Referenced by clang::Sema::BuildCXXTypeConstructExpr(), clang::Sema::CodeCompleteCall(), and clang::Sema::DeduceTemplateSpecializationFromInitializer().
bool Expr::hasNonTrivialCall | ( | const ASTContext & | Ctx | ) | const |
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Returns whether this expression has a placeholder type.
Definition at line 472 of file Expr.h.
Referenced by clang::Sema::ActOnConditionalOp(), clang::Sema::BuildInstanceMessage(), CheckArrow(), clang::Sema::CheckAssignmentOperands(), clang::Sema::checkUnknownAnyArg(), clang::Sema::diagnoseARCUnbridgedCast(), findBoundMemberType(), clang::Sema::IgnoredValueConversions(), clang::Sema::PerformContextualImplicitConversion(), and clang::Sema::stripARCUnbridgedCast().
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Returns whether this expression has a specific placeholder type.
Definition at line 477 of file Expr.h.
References clang::BuiltinType::isPlaceholderTypeKind(), and clang::Result.
bool Expr::HasSideEffects | ( | const ASTContext & | Ctx, |
bool | IncludePossibleEffects = true |
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) | const |
HasSideEffects - This routine returns true for all those expressions which have any effect other than producing a value.
Example is a function call, volatile variable read, or throwing an exception. If IncludePossibleEffects is false, this call treats certain expressions with potential side effects (such as function call-like expressions, instantiation-dependent expressions, or invocations from a macro) as not having side effects.
Definition at line 2942 of file Expr.cpp.
References getExprLoc(), clang::Stmt::getStmtClass(), clang::Decl::hasAttr(), isInstantiationDependent(), and clang::Stmt::NoStmtClass.
Referenced by clang::Sema::BuildCXXNoexceptExpr(), clang::Sema::CaptureHasSideEffects(), clang::Sema::CreateGenericSelectionExpr(), clang::ASTContext::DeclMustBeEmitted(), HandleConstructorCall(), isBlockVarRef(), isConstantInitializer(), isIdenticalStmt(), and tryEvaluateBuiltinObjectSize().
Expr * Expr::IgnoreCasts | ( | ) |
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Expr * Expr::IgnoreConversionOperator | ( | ) |
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IgnoreImpCasts - Skip past any implicit casts which might surround this expression.
Only skips ImplicitCastExprs.
Definition at line 2865 of file Expr.h.
Referenced by addFixitForObjCARCConversion(), clang::arcmt::ObjCMigrateAction::BeginInvocation(), buildCaptureDecl(), clang::Sema::BuildMemberReferenceExpr(), castOperatorNeedsParens(), CheckIdentityFieldAssignment(), CheckMoveOnConstruction(), CheckTemplateArgumentAddressOfObjectOrFunction(), CheckTemplateArgumentPointerToMember(), clang::Sema::DiagnoseAlwaysNonNullPointer(), DiagnoseForRangeReferenceVariableCopies(), diagnoseLogicalNotOnLHSofCheck(), diagnoseStringPlusChar(), diagnoseStringPlusInt(), doRewriteToUTF8StringBoxedExpressionHelper(), EmitOMPAtomicCaptureExpr(), EmitOMPAtomicUpdateExpr(), clang::CodeGen::CodeGenFunction::EmitOMPLinearClauseInit(), extractRegisterName(), GetNSSetArgumentIndex(), clang::Sema::InvalidLogicalVectorOperands(), isImplicitSelf(), requiresParensToAddCast(), rewriteToNumericBoxedExpression(), subscriptOperatorNeedsParens(), and ValidDuplicateEnum().
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IgnoreImplicit - Skip past any implicit AST nodes which might surround this expression.
Definition at line 734 of file Expr.h.
References clang::Stmt::IgnoreImplicit().
Referenced by CheckMoveOnConstruction(), CheckNonNullExpr(), clang::Sema::CodeCompleteCase(), clang::BindingDecl::getHoldingVar(), clang::ento::ExprEngine::ProcessInitializer(), and clang::consumed::ConsumedStmtVisitor::VisitVarDecl().
Expr * Expr::ignoreParenBaseCasts | ( | ) |
Ignore parentheses and derived-to-base casts.
Definition at line 2535 of file Expr.cpp.
Referenced by clang::CodeGen::CodeGenFunction::EmitCXXMemberOrOperatorMemberCallExpr(), and clang::CXXInstanceCall::getExtraInvalidatedValues().
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Expr * Expr::IgnoreParenCasts | ( | ) |
IgnoreParenCasts - Ignore parentheses and casts.
Strip off any ParenExpr or CastExprs, returning their operand.
Strip off any ParenExpr or CastExprs or ImplicitCastExprs, returning their operand.
Definition at line 2465 of file Expr.cpp.
Referenced by clang::Sema::CheckAdditionOperands(), checkBuiltinArgument(), clang::Sema::CheckCompareOperands(), checkFormatStringExpr(), CheckIndirectionOperand(), checkObjCPointerIntrospection(), clang::Sema::checkStringLiteralArgumentAttr(), CheckTemplateArgumentAddressOfObjectOrFunction(), checkVAStartIsInVariadicFunction(), clang::Sema::CodeCompleteCall(), clang::Sema::CodeCompleteCase(), diagnoseObjCLiteralComparison(), EmitX86SExtMask(), findCapturingExpr(), FindTypeTagExpr(), getAsPointeeSymbol(), getIncrementedVar(), getNSArrayObjects(), getReferencedDeclOfCallee(), getStrlenExprArg(), HandleConstructorCall(), ignoreLiteralAdditions(), isCapturedBy(), isEnableIf(), clang::BinaryOperator::isNullPointerArithmeticExtension(), isShiftOverflow(), IsStandardConversion(), IsTailPaddedMemberArray(), isTrivialExpression(), isValidOrderingForOp(), LookThroughTransitiveAssignmentsAndCommaOperators(), LookupMemberExpr(), clang::sema::FunctionScopeInfo::markSafeWeakUse(), maybeAdjustInterfaceForSubscriptingCheck(), clang::ento::ConditionBRVisitor::patternMatch(), peelOffOuterExpr(), clang::TreeTransform< Derived >::RebuildCXXOperatorCallExpr(), RemoveSelectorFromWarningCache(), UseNSOptionsMacro(), clang::ento::FindLastStoreBRVisitor::VisitNode(), and clang::ento::ConditionBRVisitor::VisitTrueTest().
Expr * Expr::IgnoreParenImpCasts | ( | ) |
IgnoreParenImpCasts - Ignore parentheses and implicit casts.
Strip off any ParenExpr or ImplicitCastExprs, returning their operand.
Definition at line 2552 of file Expr.cpp.
Referenced by clang::Sema::ActOnOpenMPAtomicDirective(), clang::Sema::ActOnOpenMPDeclareSimdDirective(), AnalyzeAssignment(), AnalyzeBitFieldAssignment(), AnalyzeComparison(), AnalyzeImplicitConversions(), CheckBoolLikeConversion(), CheckConditionalOperand(), CheckConditionalOperator(), checkEnumComparison(), CheckForDanglingReferenceOrPointer(), checkForLiteralCreation(), CheckForReference(), CheckImplicitArgumentConversions(), clang::Sema::CheckLiteralKind(), CheckMapClauseExpressionBase(), CheckMapConflicts(), CheckMoveOnConstruction(), clang::Sema::CheckSubscriptingKind(), CheckTautologicalComparison(), checkUnsafeAssignLiteral(), ClassifyConditional(), collectConjunctionTerms(), clang::Sema::ConversionToObjCStringLiteralCheck(), DiagnoseCallingConvCast(), DiagnoseFloatingImpCast(), DiagnoseSelfAssignment(), clang::Sema::DiagnoseSelfMove(), clang::CodeGen::emitDeclareSimdFunction(), emitInitWithReductionInitializer(), emitOMPArraySectionBase(), clang::Sema::findFailedBooleanCondition(), FindTypeTagExpr(), clang::OMPArraySectionExpr::getBaseOriginalType(), getPrivateItem(), getReferencedDeclOfCallee(), getSizeOfArgType(), getSizeOfExprArg(), hasRecursiveCallInPath(), isCallToSelfClass(), isEnumConstant(), IsEnumConstOrFromMacro(), IsImplicitBoolFloatConversion(), isKnownToHaveUnsignedValue(), isSameWidthConstantConversion(), IsStdFunction(), IsTailPaddedMemberArray(), lookThroughRangesV3Condition(), LookupMemberExpr(), recordFixedType(), clang::edit::rewriteObjCRedundantCallWithLiteral(), rewriteToNumberLiteral(), SemaBuiltinCpuIs(), SemaBuiltinCpuSupports(), and tryNormalizeBinaryOperator().
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Expr * Expr::IgnoreParenLValueCasts | ( | ) |
Ignore parentheses and lvalue casts.
IgnoreParenLValueCasts - Ignore parentheses and lvalue-to-rvalue casts.
Strip off any ParenExpr and CastExprs that represent lvalue casts, returning their operand.
This is intended purely as a temporary workaround for code that hasn't yet been rewritten to do the right thing about those casts, and may disappear along with the last internal use.
Definition at line 2512 of file Expr.cpp.
Referenced by getIncrementedVar(), and clang::Sema::isSelfExpr().
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Expr * Expr::IgnoreParenNoopCasts | ( | ASTContext & | Ctx | ) |
IgnoreParenNoopCasts - Ignore parentheses and casts that do not change the value (including ptr->int casts of the same size).
Strip off any ParenExpr or CastExprs, returning their operand.
Definition at line 2585 of file Expr.cpp.
Referenced by AddVariableConstraints().
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Expr * Expr::IgnoreParens | ( | ) |
IgnoreParens - Ignore parentheses.
If this Expr is a ParenExpr, return its subexpression. If that subexpression is also a ParenExpr, then this method recursively returns its subexpression, and so forth. Otherwise, the method returns the current Expr.
Definition at line 2434 of file Expr.cpp.
Referenced by CheckForDanglingReferenceOrPointer(), clang::Sema::CheckLiteralKind(), CheckMoveOnConstruction(), clang::Sema::checkPseudoObjectRValue(), clang::Sema::checkUnknownAnyArg(), clang::Sema::checkUnsafeExprAssigns(), clang::ento::ExprEngine::CreateCXXTemporaryObject(), clang::Sema::diagnoseARCUnbridgedCast(), clang::Sema::DiscardMisalignedMemberAddress(), doRewriteToUTF8StringBoxedExpressionHelper(), clang::CodeGen::CodeGenFunction::EmitBranchOnBoolExpr(), clang::CodeGen::CodeGenFunction::EmitCXXMemberCallExpr(), EmitLValueOrThrowExpression(), EvalAddr(), evaluateLValueAsAllocSize(), EvalVal(), findBoundMemberType(), findPeephole(), findRetainCycleOwner(), GetAlignOfExpr(), getArrayIndexingBound(), clang::OMPArraySectionExpr::getBaseOriginalType(), clang::CallExpr::getCallReturnType(), clang::Sema::getCopyElisionCandidate(), GetExprRange(), clang::CXXMemberCallExpr::getImplicitObjectArgument(), clang::CXXMemberCallExpr::getMethodDecl(), GetNumNonZeroBytesInInit(), getPrivateItem(), getRightmostLeaf(), HandleConstructorCall(), ignorePointerCastsAndParens(), isBlockVarRef(), isCheapEnoughToEvaluateUnconditionally(), isInvalidICRSource(), isParenthesizedADLCallee(), isSimpleZero(), IsSpecialDiscardedValue(), IsStandardConversion(), clang::InitListExpr::isStringLiteralInit(), clang::Sema::IsStringLiteralToNonConstPointerConversion(), isUnusedResultAWarning(), LookupMethodInReceiverType(), shouldEmitSeparateBlockRetain(), shouldExtendReceiverForInnerPointerMessage(), clang::CodeGen::CodeGenFunction::ShouldNullCheckClassCastValue(), tryEmitARCCopyWeakInit(), tryEmitARCRetainLoadOfScalar(), clang::ento::ExprEngine::VisitArraySubscriptExpr(), clang::ento::ExprEngine::VisitBinaryOperator(), clang::ento::ExprEngine::VisitGuardedExpr(), clang::ento::ExprEngine::VisitIncrementDecrementOperator(), and clang::ento::ConditionBRVisitor::VisitTerminator().
bool Expr::isBoundMemberFunction | ( | ASTContext & | Ctx | ) | const |
Returns true if this expression is a bound member function.
Definition at line 2404 of file Expr.cpp.
References ClassifyLValue(), isTypeDependent(), and LV_MemberFunction.
bool Expr::isConstantInitializer | ( | ASTContext & | Ctx, |
bool | ForRef, | ||
const Expr ** | Culprit = nullptr |
||
) | const |
isConstantInitializer - Returns true if this expression can be emitted to IR as a constant, and thus can be used as a constant initializer in C.
If this expression is not constant and Culprit is non-null, it is used to store the address of first non constant expr.
Definition at line 2753 of file Expr.cpp.
References EvaluateAsInt(), EvaluateAsLValue(), clang::RecordDecl::fields(), clang::CXXConstructExpr::getArg(), clang::Type::getAs(), clang::DesignatedInitUpdateExpr::getBase(), clang::CastExpr::getCastKind(), clang::CXXConstructExpr::getConstructor(), clang::InitListExpr::getInit(), clang::InitListExpr::getInitializedFieldInUnion(), clang::CXXConstructExpr::getNumArgs(), clang::InitListExpr::getNumInits(), clang::UnaryOperator::getOpcode(), clang::CXXMethodDecl::getParent(), clang::Stmt::getStmtClass(), clang::UnaryOperator::getSubExpr(), clang::CastExpr::getSubExpr(), getType(), clang::DesignatedInitUpdateExpr::getUpdater(), clang::Expr::EvalStatus::HasSideEffects, HasSideEffects(), clang::CXXRecordDecl::hasTrivialDestructor(), clang::Type::isArrayType(), isConstantInitializer(), isEvaluatable(), clang::Type::isRecordType(), clang::FunctionDecl::isTrivial(), clang::TagDecl::isUnion(), clang::Result, and SE_AllowUndefinedBehavior.
Referenced by clang::Sema::CheckCompleteVariableDeclaration(), clang::Sema::CheckForConstantInitializer(), clang::CodeGen::CodeGenFunction::EmitAutoVarAlloca(), clang::Sema::InstantiateVariableInitializer(), and isConstantInitializer().
bool Expr::isCXX11ConstantExpr | ( | const ASTContext & | Ctx, |
APValue * | Result = nullptr , |
||
SourceLocation * | Loc = nullptr |
||
) | const |
isCXX11ConstantExpr - Return true if this expression is a constant expression in C++11.
Can only be used in C++.
Note: This does not perform the implicit conversions required by C++11 [expr.const]p5.
Definition at line 10698 of file ExprConstant.cpp.
References clang::ASTContext::getLangOpts().
Referenced by EvaluateCPlusPlus11IntegralConstantExpr(), and clang::StandardConversionSequence::getNarrowingKind().
bool Expr::isCXX98IntegralConstantExpr | ( | const ASTContext & | Ctx | ) | const |
isCXX98IntegralConstantExpr - Return true if this expression is an integral constant expression in C++98.
Can only be used in C++.
Definition at line 10694 of file ExprConstant.cpp.
References CheckICE().
Referenced by isNullPointerConstant().
bool Expr::isDefaultArgument | ( | ) | const |
Determine whether this expression is a default function argument.
Default arguments are implicitly generated in the abstract syntax tree by semantic analysis for function calls, object constructions, etc. in C++. Default arguments are represented by CXXDefaultArgExpr
nodes; this routine also looks through any implicit casts to determine whether the expression is a default argument.
bool Expr::isEvaluatable | ( | const ASTContext & | Ctx, |
SideEffectsKind | SEK = SE_NoSideEffects |
||
) | const |
isEvaluatable - Call EvaluateAsRValue to see if this expression can be constant folded without side-effects, but discard the result.
isEvaluatable - Call EvaluateAsRValue to see if this expression can be constant folded, but discard the result.
Definition at line 10173 of file ExprConstant.cpp.
References EvaluateAsRValue(), hasUnacceptableSideEffect(), and clang::Result.
Referenced by EvaluateBuiltinConstantP(), isCheapEnoughToEvaluateUnconditionally(), and isConstantInitializer().
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Definition at line 252 of file Expr.h.
References clang::VK_RValue.
Referenced by clang::Sema::ActOnConditionalOp(), buildCapture(), buildCaptureDecl(), clang::ento::SValBuilder::conjureSymbolVal(), clang::CodeGen::CodeGenFunction::EmitConditionalOperatorLValue(), Evaluate(), EvaluateAsRValue(), EvaluateBuiltinConstantP(), EvaluateLValue(), EvaluateObjectArgument(), EvaluatePointer(), clang::ento::ExprEngine::handleLVectorSplat(), hasTrivialGetExpr(), IsStandardConversion(), clang::InitListExpr::isTransparent(), performReferenceExtension(), clang::CodeGen::CodeGenFunction::OpaqueValueMappingData::shouldBindAsLValue(), clang::CodeGen::CodeGenFunction::ShouldNullCheckClassCastValue(), tryEvaluateBuiltinObjectSize(), TryLValueToRValueCast(), tryObjCWritebackConversion(), clang::ento::ExprEngine::VisitArraySubscriptExpr(), clang::ento::ExprEngine::VisitBinaryOperator(), clang::ento::ExprEngine::VisitCommonDeclRefExpr(), clang::ento::ExprEngine::VisitCompoundLiteralExpr(), and clang::ento::ExprEngine::VisitInitListExpr().
bool Expr::isImplicitCXXThis | ( | ) | const |
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Whether this expression is instantiation-dependent, meaning that it depends in some way on a template parameter, even if neither its type nor (constant) value can change due to the template instantiation.
In the following example, the expression sizeof
(sizeof(T() + T())) is instantiation-dependent (since it involves a template parameter T
), but is neither type- nor value-dependent, since the type of the inner sizeof
is known (std::size_t
) and therefore the size of the outer sizeof
is known.
Definition at line 191 of file Expr.h.
Referenced by clang::Sema::ActOnOpenMPAtomicDirective(), clang::Sema::ActOnOpenMPCriticalDirective(), clang::Sema::ActOnOpenMPDistScheduleClause(), clang::Sema::ActOnOpenMPFinalClause(), clang::Sema::ActOnOpenMPIfClause(), clang::Sema::ActOnOpenMPLinearClause(), clang::Sema::ActOnOpenMPScheduleClause(), clang::AtomicExpr::AtomicExpr(), clang::CallExpr::CallExpr(), CheckIfAnyEnclosingLambdasMustCaptureAnyPotentialCaptures(), clang::Sema::CorrectDelayedTyposInExpr(), clang::CXXConstructExpr::CXXConstructExpr(), clang::CXXNewExpr::CXXNewExpr(), clang::ASTContext::getDecltypeType(), clang::ASTContext::getDependentAddressSpaceType(), clang::DesignatedInitExpr::Designator::getFieldName(), clang::ObjCPropertyRefExpr::getReceiverType(), hasOnlyNonStaticMemberFunctions(), HasSideEffects(), clang::TemplateArgument::isInstantiationDependent(), clang::LambdaExpr::isMutable(), IsNonNegativeIntegerValue(), clang::DecltypeType::isSugared(), clang::ParenListExpr::ParenListExpr(), clang::InitListExpr::setInit(), clang::ShuffleVectorExpr::ShuffleVectorExpr(), and clang::ASTNodeImporter::VisitInitListExpr().
bool Expr::isIntegerConstantExpr | ( | llvm::APSInt & | Result, |
const ASTContext & | Ctx, | ||
SourceLocation * | Loc = nullptr , |
||
bool | isEvaluated = true |
||
) | const |
isIntegerConstantExpr - Return true if this expression is a valid integer constant expression, and, if so, return its value in Result.
If not a valid i-c-e, return false and fill in Loc (if specified) with the location of the invalid expression.
Note: This does not perform the implicit conversions required by C++11 [expr.const]p5.
Definition at line 10678 of file ExprConstant.cpp.
References EvaluateCPlusPlus11IntegralConstantExpr(), and clang::ASTContext::getLangOpts().
Referenced by clang::Sema::ActOnOpenMPDistScheduleClause(), clang::Sema::ActOnOpenMPLinearClause(), clang::Sema::ActOnOpenMPScheduleClause(), AnalyzeComparison(), clang::Sema::BuildAddressSpaceAttr(), clang::Sema::BuildExtVectorType(), clang::Sema::CheckCaseExpression(), checkIntToPointerCast(), EmitAArch64TblBuiltinExpr(), clang::CodeGen::CodeGenFunction::EmitCommonNeonBuiltinExpr(), clang::CodeGen::CodeGenFunction::EmitX86BuiltinExpr(), FitsInto(), clang::StandardConversionSequence::getNarrowingKind(), clang::FunctionProtoType::getNoexceptSpec(), HandleNeonVectorTypeAttr(), HandleVectorSizeAttr(), IsNonNegativeIntegerValue(), isNullPointerConstant(), IsStandardConversion(), TryOCLSamplerInitialization(), TryOCLZeroEventInitialization(), and TryOCLZeroQueueInitialization().
bool Expr::isIntegerConstantExpr | ( | const ASTContext & | Ctx, |
SourceLocation * | Loc = nullptr |
||
) | const |
Definition at line 10665 of file ExprConstant.cpp.
References CheckICE(), EvaluateCPlusPlus11IntegralConstantExpr(), and clang::ASTContext::getLangOpts().
bool Expr::isKnownToHaveBooleanValue | ( | ) | const |
isKnownToHaveBooleanValue - Return true if this is an integer expression that is known to return 0 or 1.
This happens for _Bool/bool expressions but also int expressions which are produced by things like comparisons in C.
Definition at line 135 of file Expr.cpp.
Referenced by clang::Sema::ActOnFinishSwitchStmt(), CheckTautologicalComparison(), and diagnoseLogicalNotOnLHSofCheck().
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isLValue - True if this expression is an "l-value" according to the rules of the current language.
C and C++ give somewhat different rules for this concept, but in general, the result of an l-value expression identifies a specific object whereas the result of an r-value expression is a value detached from any specific storage.
C++11 divides the concept of "r-value" into pure r-values ("pr-values") and so-called expiring values ("x-values"), which identify specific objects that can be safely cannibalized for their resources. This is an unfortunate abuse of terminology on the part of the C++ committee. In Clang, when we say "r-value", we generally mean a pr-value.
Definition at line 249 of file Expr.h.
References clang::VK_LValue.
Referenced by clang::Sema::ActOnOpenMPAtomicDirective(), AdjustFunctionParmAndArgTypesForDeduction(), clang::Sema::CreateBuiltinArraySubscriptExpr(), EmitOMPAtomicCaptureExpr(), EmitOMPAtomicReadExpr(), EmitOMPAtomicUpdateExpr(), EvaluateExpressionTrait(), clang::ento::ExplodedGraph::isInterestingLValueExpr(), TryClassUnification(), TryLValueToRValueCast(), and TryStaticReferenceDowncast().
Expr::isModifiableLvalueResult Expr::isModifiableLvalue | ( | ASTContext & | Ctx, |
SourceLocation * | Loc = nullptr |
||
) | const |
isModifiableLvalue - C99 6.3.2.1: an lvalue that does not have array type, does not have an incomplete type, does not have a const-qualified type, and if it is a structure or union, does not have any member (including, recursively, any member or element of all contained aggregates or unions) with a const-qualified type.
Loc | [in,out] - A source location which may be filled in with the location of the expression making this a non-modifiable lvalue, if specified. |
Definition at line 669 of file ExprClassification.cpp.
References clang::Expr::Classification::CL_AddressableVoid, clang::Expr::Classification::CL_ArrayTemporary, clang::Expr::Classification::CL_ClassTemporary, clang::Expr::Classification::CL_DuplicateVectorComponents, clang::Expr::Classification::CL_Function, clang::Expr::Classification::CL_LValue, clang::Expr::Classification::CL_MemberFunction, clang::Expr::Classification::CL_ObjCMessageRValue, clang::Expr::Classification::CL_PRValue, clang::Expr::Classification::CL_SubObjCPropertySetting, clang::Expr::Classification::CL_Void, clang::Expr::Classification::CL_XValue, ClassifyModifiable(), clang::Expr::Classification::CM_ArrayType, clang::Expr::Classification::CM_ConstAddrSpace, clang::Expr::Classification::CM_ConstQualified, clang::Expr::Classification::CM_ConstQualifiedField, clang::Expr::Classification::CM_Function, clang::Expr::Classification::CM_IncompleteType, clang::Expr::Classification::CM_LValueCast, clang::Expr::Classification::CM_Modifiable, clang::Expr::Classification::CM_NoSetterProperty, clang::Expr::Classification::CM_RValue, clang::Expr::Classification::CM_Untested, clang::Expr::Classification::getKind(), clang::Expr::Classification::getModifiable(), MLV_ArrayTemporary, MLV_ArrayType, MLV_ClassTemporary, MLV_ConstAddrSpace, MLV_ConstQualified, MLV_ConstQualifiedField, MLV_DuplicateVectorComponents, MLV_IncompleteType, MLV_IncompleteVoidType, MLV_InvalidExpression, MLV_InvalidMessageExpression, MLV_LValueCast, MLV_MemberFunction, MLV_NoSetterProperty, MLV_NotObjectType, MLV_SubObjCPropertySetting, and MLV_Valid.
Expr::NullPointerConstantKind Expr::isNullPointerConstant | ( | ASTContext & | Ctx, |
NullPointerConstantValueDependence | NPC | ||
) | const |
isNullPointerConstant - C99 6.3.2.3p3 - Test if this reduces down to a Null pointer constant.
isNullPointerConstant - C99 6.3.2.3p3 - Return whether this is a null pointer constant or not, as well as the specific kind of constant detected.
The return value can further distinguish the kind of NULL pointer constant that was detected.
Null pointer constants can be integer constant expressions with the value zero, casts of zero to void*, nullptr (C++0X), or __null (a GNU extension).
Definition at line 3276 of file Expr.cpp.
References clang::Default, EvaluateKnownConstInt(), clang::QualType::getAddressSpace(), clang::Type::getAs(), clang::ASTContext::getLangOpts(), clang::Type::getPointeeType(), getType(), clang::APIntStorage::getValue(), isCXX98IntegralConstantExpr(), clang::Type::isEnumeralType(), isIntegerConstantExpr(), isNullPointerConstant(), isTypeDependent(), isValueDependent(), clang::Type::isVoidType(), NPC_NeverValueDependent, NPC_ValueDependentIsNotNull, NPC_ValueDependentIsNull, NPCK_CXX11_nullptr, NPCK_GNUNull, NPCK_NotNull, NPCK_ZeroExpression, NPCK_ZeroLiteral, clang::opencl_generic, and clang::opencl_private.
Referenced by clang::Sema::CheckAdditionOperands(), clang::Sema::CheckCompareOperands(), checkFormatStringExpr(), clang::Sema::CheckMemberPointerConversion(), clang::Sema::CheckPointerConversion(), clang::Sema::DiagnoseConditionalForNull(), DiagnoseNullConversion(), diagnoseObjCLiteralComparison(), clang::Sema::FindCompositePointerType(), getAsPointeeSymbol(), isInvalidICRSource(), clang::Sema::IsMemberPointerConversion(), clang::BinaryOperator::isNullPointerArithmeticExtension(), isNullPointerConstant(), and SemaOpenCLBuiltinEnqueueKernel().
bool Expr::isOBJCGCCandidate | ( | ASTContext & | Ctx | ) | const |
bool Expr::isObjCSelfExpr | ( | ) | const |
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Definition at line 416 of file Expr.h.
References clang::OK_BitField, and clang::OK_Ordinary.
Referenced by clang::Sema::ActOnConditionalOp().
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isPotentialConstantExpr - Return true if this function's definition might be usable in a constant expression in C++11, if it were marked constexpr.
Return false if the function can never produce a constant expression, along with diagnostics describing why not.
Definition at line 10762 of file ExprConstant.cpp.
References clang::DeclContext::isDependentContext().
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isPotentialConstantExprUnevaluted - Return true if this expression might be usable in a constant expression in C++11 in an unevaluated context, if it were in function FD marked constexpr.
Return false if the function can never produce a constant expression, along with diagnostics describing why not.
Definition at line 10803 of file ExprConstant.cpp.
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Definition at line 250 of file Expr.h.
References clang::VK_RValue.
Referenced by clang::Sema::BuildMemberReferenceExpr(), CheckICE(), checkIndirectCopyRestoreSource(), CheckLiteralType(), CheckMoveOnConstruction(), clang::CodeGen::CodeGenFunction::EmitObjCIsaExpr(), EvaluateArray(), EvaluateAsBooleanCondition(), EvaluateAtomic(), EvaluateComplex(), EvaluateExpressionTrait(), EvaluateFloat(), EvaluateInPlace(), EvaluateIntegerOrLValue(), EvaluateMemberPointer(), EvaluatePointer(), EvaluateRecord(), EvaluateTemporary(), EvaluateVector(), EvaluateVoid(), FastEvaluateAsRValue(), clang::Sema::FillInlineAsmIdentifierInfo(), clang::CXXMethodDecl::getDevirtualizedMethod(), HandleConstructorCall(), clang::Sema::IgnoredValueConversions(), ignorePointerCastsAndParens(), clang::InitListExpr::isTransparent(), and clang::Sema::MaybeBindToTemporary().
bool Expr::isTemporaryObject | ( | ASTContext & | C, |
const CXXRecordDecl * | TempTy | ||
) | const |
Determine whether the result of this expression is a temporary object of the given class type.
isTemporaryObject - Determines if this expression produces a temporary of the given class type.
Definition at line 2659 of file Expr.cpp.
References getType(), clang::ASTContext::getTypeDeclType(), and clang::ASTContext::hasSameUnqualifiedType().
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isTypeDependent - Determines whether this expression is type-dependent (C++ [temp.dep.expr]), which means that its type could change from one template instantiation to the next.
For example, the expressions "x" and "x + y" are type-dependent in the following code, but "y" is not type-dependent:
Definition at line 167 of file Expr.h.
Referenced by clang::Sema::ActOnChooseExpr(), clang::Sema::ActOnConditionalOp(), clang::Sema::ActOnDesignatedInitializer(), clang::Sema::ActOnFinishCXXInClassMemberInitializer(), clang::Sema::ActOnFinishSwitchStmt(), clang::Sema::ActOnIndirectGotoStmt(), clang::Sema::ActOnOpenMPCriticalDirective(), clang::Sema::ActOnOpenMPDistScheduleClause(), clang::Sema::ActOnOpenMPFinalClause(), clang::Sema::ActOnOpenMPIfClause(), clang::Sema::ActOnOpenMPLinearClause(), clang::Sema::ActOnOpenMPScheduleClause(), AnalyzeBitFieldAssignment(), AnalyzeImplicitConversions(), clang::AtomicExpr::AtomicExpr(), clang::Sema::BuildBaseInitializer(), clang::Sema::BuildBinOp(), clang::Sema::BuildCXXThrow(), clang::Sema::BuildExpressionTrait(), clang::Sema::BuildExtVectorType(), clang::Sema::BuildMemberInitializer(), clang::Sema::BuildObjCBoxedExpr(), clang::Sema::BuildObjCBridgedCast(), clang::Sema::BuildObjCSubscriptExpression(), clang::Sema::BuildStaticAssertDeclaration(), clang::CallExpr::CallExpr(), clang::canDynamicCastThrow(), clang::canTypeidThrow(), CheckArrow(), clang::Sema::CheckCaseExpression(), clang::Sema::checkExceptionSpecification(), checkFormatStringExpr(), CheckImplicitConversion(), CheckIncrementDecrementOperand(), CheckIndirectionOperand(), CheckObjCCollectionLiteralElement(), clang::Sema::CheckObjCForCollectionOperand(), clang::Sema::checkPseudoObjectAssignment(), clang::Sema::checkPseudoObjectIncDec(), clang::Sema::CheckTemplateArgument(), CheckTemplateArgumentPointerToMember(), clang::Sema::CodeCompleteCall(), clang::CoroutineSuspendExpr::CoroutineSuspendExpr(), clang::Sema::CorrectDelayedTyposInExpr(), clang::OffsetOfExpr::CreateEmpty(), DecodeOperatorCall(), clang::Sema::DeduceAutoType(), clang::Sema::DiagnoseEqualityWithExtraParens(), doRewriteToUTF8StringBoxedExpressionHelper(), EvalAddr(), clang::ASTContext::getDependentSizedArrayType(), clang::DesignatedInitExpr::Designator::getFieldName(), getPrivateItem(), clang::ObjCPropertyRefExpr::getReceiverType(), clang::ASTContext::getTypeOfExprType(), clang::ArrayTypeTraitExpr::getValue(), HandleNeonVectorTypeAttr(), HandleVectorSizeAttr(), hasOnlyNonStaticMemberFunctions(), isBoundMemberFunction(), clang::LambdaExpr::isMutable(), IsNonNegativeIntegerValue(), isNullPointerConstant(), isNullPointerValueTemplateArgument(), clang::TypeOfExprType::isSugared(), isUnusedResultAWarning(), ObjCEnumerationCollection(), clang::ParenListExpr::ParenListExpr(), clang::Sema::PerformContextualImplicitConversion(), clang::TreeTransform< Derived >::RebuildCXXForRangeStmt(), clang::TreeTransform< Derived >::RebuildCXXPseudoDestructorExpr(), rewriteToNumericBoxedExpression(), SemaBuiltinCpuIs(), clang::Sema::SemaBuiltinShuffleVector(), clang::InitListExpr::setInit(), clang::ShuffleVectorExpr::ShuffleVectorExpr(), and clang::Sema::VerifyBitField().
bool Expr::isUnusedResultAWarning | ( | const Expr *& | WarnE, |
SourceLocation & | Loc, | ||
SourceRange & | R1, | ||
SourceRange & | R2, | ||
ASTContext & | Ctx | ||
) | const |
isUnusedResultAWarning - Return true if this immediate expression should be warned about if the result is unused.
If so, fill in expr, location, and ranges with expr to warn on and source locations/ranges appropriate for a warning.
If so, fill in Loc and Ranges with location to warn on and the source range[s] to report with the warning.
Definition at line 2030 of file Expr.cpp.
References clang::CompoundStmt::body_empty(), clang::CallExpr::getArg(), clang::Type::getAsCXXRecordDecl(), clang::CallExpr::getCallee(), clang::CallExpr::getCalleeDecl(), clang::CallExpr::getCallReturnType(), clang::ASTContext::getCanonicalType(), getExprLoc(), clang::ASTContext::getLangOpts(), clang::BinaryOperator::getLHS(), clang::ConditionalOperator::getLHS(), clang::Stmt::getLocEnd(), clang::Stmt::getLocStart(), clang::InitListExpr::getLocStart(), clang::ObjCMessageExpr::getMethodDecl(), clang::ObjCMessageExpr::getMethodFamily(), clang::CallExpr::getNumArgs(), clang::UnaryOperator::getOpcode(), clang::BinaryOperator::getOpcode(), clang::CXXOperatorCallExpr::getOperator(), clang::CXXOperatorCallExpr::getOperatorLoc(), clang::UnaryOperator::getOperatorLoc(), clang::BinaryOperator::getOperatorLoc(), clang::BinaryOperator::getRHS(), clang::ConditionalOperator::getRHS(), clang::CXXOperatorCallExpr::getSourceRange(), clang::Stmt::getSourceRange(), clang::Stmt::getStmtClass(), clang::UnaryOperator::getSubExpr(), clang::PseudoObjectExpr::getSyntacticForm(), getType(), clang::FunctionDecl::hasUnusedResultAttr(), IgnoreParens(), clang::BinaryOperator::isAssignmentOp(), clang::ObjCMessageExpr::isInstanceMessage(), clang::Type::isReferenceType(), isTypeDependent(), isUnusedResultAWarning(), clang::Type::isVoidType(), and clang::OMF_init.
Referenced by isUnusedResultAWarning().
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isValueDependent - Determines whether this expression is value-dependent (C++ [temp.dep.constexpr]).
For example, the array bound of "Chars" in the following example is value-dependent.
Definition at line 149 of file Expr.h.
Referenced by clang::Sema::ActOnChooseExpr(), clang::Sema::ActOnDesignatedInitializer(), clang::Sema::ActOnFinishSwitchStmt(), clang::Sema::ActOnOpenMPCriticalDirective(), clang::Sema::ActOnOpenMPDistScheduleClause(), clang::Sema::ActOnOpenMPFinalClause(), clang::Sema::ActOnOpenMPIfClause(), clang::Sema::ActOnOpenMPLinearClause(), clang::Sema::ActOnOpenMPScheduleClause(), AnalyzeBitFieldAssignment(), AnalyzeComparison(), AnalyzeImplicitConversions(), clang::AtomicExpr::AtomicExpr(), clang::Sema::BuildAddressSpaceAttr(), clang::Sema::BuildExtVectorType(), clang::Sema::BuildStaticAssertDeclaration(), clang::CallExpr::CallExpr(), clang::Sema::CheckCaseExpression(), clang::Sema::CheckCXXBooleanCondition(), checkFormatStringExpr(), CheckICE(), CheckImplicitConversion(), CheckNonNullExpr(), CheckTemplateArgumentAddressOfObjectOrFunction(), CheckTemplateArgumentPointerToMember(), clang::Sema::CorrectDelayedTyposInExpr(), clang::CXXConstructExpr::CXXConstructExpr(), clang::ASTContext::DeclMustBeEmitted(), clang::Sema::DiagnoseSentinelCalls(), EvaluateInPlace(), EvaluateVarDecl(), evaluateVarDeclInit(), clang::ASTContext::getDependentSizedArrayType(), clang::DesignatedInitExpr::Designator::getFieldName(), clang::StandardConversionSequence::getNarrowingKind(), clang::FunctionProtoType::getNoexceptSpec(), clang::SizeOfPackExpr::getPackLength(), getPrivateItem(), clang::TypeTraitExpr::getValue(), HandleNeonVectorTypeAttr(), HandleVectorSizeAttr(), isCanonicalExceptionSpecification(), clang::LambdaExpr::isMutable(), IsNonNegativeIntegerValue(), isNullPointerConstant(), isNullPointerValueTemplateArgument(), clang::SizeOfPackExpr::isPartiallySubstituted(), IsTailPaddedMemberArray(), mergeExceptionSpecs(), clang::ParenListExpr::ParenListExpr(), SemaBuiltinCpuIs(), clang::InitListExpr::setInit(), clang::ShuffleVectorExpr::ShuffleVectorExpr(), VariableCanNeverBeAConstantExpression(), clang::Sema::VerifyBitField(), and clang::ASTNodeImporter::VisitInitListExpr().
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Definition at line 251 of file Expr.h.
References clang::VK_XValue.
Referenced by TryClassUnification(), and tryEmitARCRetainLoadOfScalar().
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Returns true if this expression is a gl-value that potentially refers to a bit-field.
In C++, whether a gl-value refers to a bitfield is essentially an aspect of the value-kind type system.
Definition at line 437 of file Expr.h.
References clang::OK_BitField.
Referenced by TryReferenceInitializationCore().
bool Expr::refersToGlobalRegisterVar | ( | ) | const |
bool Expr::refersToVectorElement | ( | ) | const |
Returns whether this expression refers to a vector element.
Definition at line 3479 of file Expr.cpp.
Referenced by TryReferenceInitializationCore().
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Set whether this expression is instantiation-dependent or not.
Definition at line 196 of file Expr.h.
Referenced by clang::ASTNodeImporter::VisitInitListExpr().
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Definition at line 129 of file Expr.h.
References clang::QualType::isNull(), and clang::Type::isReferenceType().
Referenced by clang::DesignatedInitUpdateExpr::DesignatedInitUpdateExpr(), isIdiomaticBraceElisionEntity(), clang::TreeTransform< Derived >::RebuildInitList(), SemaBuiltinReserveRWPipe(), SemaOpenCLBuiltinToAddr(), clang::ASTNodeImporter::VisitInitListExpr(), and warnBracedScalarInit().
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Set whether this expression is value-dependent or not.
Definition at line 152 of file Expr.h.
Referenced by clang::ASTNodeImporter::VisitInitListExpr().
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const Expr * Expr::skipRValueSubobjectAdjustments | ( | SmallVectorImpl< const Expr *> & | CommaLHS, |
SmallVectorImpl< SubobjectAdjustment > & | Adjustments | ||
) | const |
Walk outwards from an expression we want to bind a reference to and find the expression whose lifetime needs to be extended.
Record the LHSs of comma expressions and adjustments needed along the path.
Definition at line 77 of file Expr.cpp.
Referenced by clang::ento::ExprEngine::getInitialState(), performLifetimeExtension(), and performReferenceExtension().
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bool Expr::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.
Returns true if all of the above holds and we were able to figure out the size, false otherwise.
Type | - How to evaluate the size of the Expr, as defined by the "type" parameter of __builtin_object_size |
Definition at line 10827 of file ExprConstant.cpp.