clang
6.0.0
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#include "clang/AST/APValue.h"
#include "clang/AST/ASTContext.h"
#include "clang/AST/ASTDiagnostic.h"
#include "clang/AST/ASTLambda.h"
#include "clang/AST/CharUnits.h"
#include "clang/AST/Expr.h"
#include "clang/AST/RecordLayout.h"
#include "clang/AST/StmtVisitor.h"
#include "clang/AST/TypeLoc.h"
#include "clang/Basic/Builtins.h"
#include "clang/Basic/TargetInfo.h"
#include "llvm/Support/raw_ostream.h"
#include <cstring>
#include <functional>
#include "clang/AST/TypeNodes.def"
#include "clang/AST/BuiltinTypes.def"
#include "clang/Basic/OpenCLImageTypes.def"
#include "clang/AST/StmtNodes.inc"
Go to the source code of this file.
Macros | |
#define | TYPE(ID, BASE) |
#define | DEPENDENT_TYPE(ID, BASE) case Type::ID: |
#define | NON_CANONICAL_TYPE(ID, BASE) case Type::ID: |
#define | NON_CANONICAL_UNLESS_DEPENDENT_TYPE(ID, BASE) case Type::ID: |
#define | BUILTIN_TYPE(ID, SINGLETON_ID) |
#define | SIGNED_TYPE(ID, SINGLETON_ID) case BuiltinType::ID: return integer_type_class; |
#define | FLOATING_TYPE(ID, SINGLETON_ID) case BuiltinType::ID: return real_type_class; |
#define | PLACEHOLDER_TYPE(ID, SINGLETON_ID) case BuiltinType::ID: break; |
#define | IMAGE_TYPE(ImgType, Id, SingletonId, Access, Suffix) case BuiltinType::Id: |
#define | ABSTRACT_STMT(Node) |
#define | STMT(Node, Base) case Expr::Node##Class: |
#define | EXPR(Node, Base) |
Enumerations | |
enum | CheckSubobjectKind |
enum | AccessKinds { AK_Read, AK_Assign, AK_Increment, AK_Decrement } |
Kinds of access we can perform on an object, for diagnostics. More... | |
enum | EvalStmtResult |
enum | ICEKind |
Functions | |
static bool | IsGlobalLValue (APValue::LValueBase B) |
static void | describeCall (CallStackFrame *Frame, raw_ostream &Out) |
Produce a string describing the given constexpr call. More... | |
static bool | Evaluate (APValue &Result, EvalInfo &Info, const Expr *E) |
static bool | EvaluateInPlace (APValue &Result, EvalInfo &Info, const LValue &This, const Expr *E, bool AllowNonLiteralTypes) |
EvaluateInPlace - Evaluate an expression in-place in an APValue. More... | |
static bool | EvaluateLValue (const Expr *E, LValue &Result, EvalInfo &Info, bool InvalidBaseOK) |
Evaluate an expression as an lvalue. More... | |
static bool | EvaluatePointer (const Expr *E, LValue &Result, EvalInfo &Info, bool InvalidBaseOK=false) |
static bool | EvaluateMemberPointer (const Expr *E, MemberPtr &Result, EvalInfo &Info) |
static bool | EvaluateTemporary (const Expr *E, LValue &Result, EvalInfo &Info) |
Evaluate an expression of record type as a temporary. More... | |
static bool | EvaluateInteger (const Expr *E, APSInt &Result, EvalInfo &Info) |
static bool | EvaluateIntegerOrLValue (const Expr *E, APValue &Result, EvalInfo &Info) |
EvaluateIntegerOrLValue - Evaluate an rvalue integral-typed expression, and produce either the integer value or a pointer. More... | |
static bool | EvaluateFloat (const Expr *E, APFloat &Result, EvalInfo &Info) |
static bool | EvaluateComplex (const Expr *E, ComplexValue &Res, EvalInfo &Info) |
static bool | EvaluateAtomic (const Expr *E, const LValue *This, APValue &Result, EvalInfo &Info) |
static bool | EvaluateAsRValue (EvalInfo &Info, const Expr *E, APValue &Result) |
EvaluateAsRValue - Try to evaluate this expression, performing an implicit lvalue-to-rvalue cast if it is an lvalue. More... | |
static void | negateAsSigned (APSInt &Int) |
Negate an APSInt in place, converting it to a signed form if necessary, and preserving its value (by extending by up to one bit as needed). More... | |
static bool | EvaluateIgnoredValue (EvalInfo &Info, const Expr *E) |
Evaluate an expression to see if it had side-effects, and discard its result. More... | |
static bool | IsStringLiteralCall (const CallExpr *E) |
Should this call expression be treated as a string literal? More... | |
static void | NoteLValueLocation (EvalInfo &Info, APValue::LValueBase Base) |
static bool | CheckLValueConstantExpression (EvalInfo &Info, SourceLocation Loc, QualType Type, const LValue &LVal) |
Check that this reference or pointer core constant expression is a valid value for an address or reference constant expression. More... | |
static bool | CheckMemberPointerConstantExpression (EvalInfo &Info, SourceLocation Loc, QualType Type, const APValue &Value) |
Member pointers are constant expressions unless they point to a non-virtual dllimport member function. More... | |
static bool | CheckLiteralType (EvalInfo &Info, const Expr *E, const LValue *This=nullptr) |
Check that this core constant expression is of literal type, and if not, produce an appropriate diagnostic. More... | |
static bool | CheckConstantExpression (EvalInfo &Info, SourceLocation DiagLoc, QualType Type, const APValue &Value) |
Check that this core constant expression value is a valid value for a constant expression. More... | |
static const ValueDecl * | GetLValueBaseDecl (const LValue &LVal) |
static bool | IsLiteralLValue (const LValue &Value) |
static bool | IsWeakLValue (const LValue &Value) |
static bool | isZeroSized (const LValue &Value) |
static bool | EvalPointerValueAsBool (const APValue &Value, bool &Result) |
static bool | HandleConversionToBool (const APValue &Val, bool &Result) |
static bool | EvaluateAsBooleanCondition (const Expr *E, bool &Result, EvalInfo &Info) |
template<typename T > | |
static bool | HandleOverflow (EvalInfo &Info, const Expr *E, const T &SrcValue, QualType DestType) |
static bool | HandleFloatToIntCast (EvalInfo &Info, const Expr *E, QualType SrcType, const APFloat &Value, QualType DestType, APSInt &Result) |
static bool | HandleFloatToFloatCast (EvalInfo &Info, const Expr *E, QualType SrcType, QualType DestType, APFloat &Result) |
static APSInt | HandleIntToIntCast (EvalInfo &Info, const Expr *E, QualType DestType, QualType SrcType, const APSInt &Value) |
static bool | HandleIntToFloatCast (EvalInfo &Info, const Expr *E, QualType SrcType, const APSInt &Value, QualType DestType, APFloat &Result) |
static bool | truncateBitfieldValue (EvalInfo &Info, const Expr *E, APValue &Value, const FieldDecl *FD) |
static bool | EvalAndBitcastToAPInt (EvalInfo &Info, const Expr *E, llvm::APInt &Res) |
template<typename Operation > | |
static bool | CheckedIntArithmetic (EvalInfo &Info, const Expr *E, const APSInt &LHS, const APSInt &RHS, unsigned BitWidth, Operation Op, APSInt &Result) |
Perform the given integer operation, which is known to need at most BitWidth bits, and check for overflow in the original type (if that type was not an unsigned type). More... | |
static bool | handleIntIntBinOp (EvalInfo &Info, const Expr *E, const APSInt &LHS, BinaryOperatorKind Opcode, APSInt RHS, APSInt &Result) |
Perform the given binary integer operation. More... | |
static bool | handleFloatFloatBinOp (EvalInfo &Info, const Expr *E, APFloat &LHS, BinaryOperatorKind Opcode, const APFloat &RHS) |
Perform the given binary floating-point operation, in-place, on LHS. More... | |
static bool | CastToDerivedClass (EvalInfo &Info, const Expr *E, LValue &Result, const RecordDecl *TruncatedType, unsigned TruncatedElements) |
Cast an lvalue referring to a base subobject to a derived class, by truncating the lvalue's path to the given length. More... | |
static bool | HandleLValueDirectBase (EvalInfo &Info, const Expr *E, LValue &Obj, const CXXRecordDecl *Derived, const CXXRecordDecl *Base, const ASTRecordLayout *RL=nullptr) |
static bool | HandleLValueBase (EvalInfo &Info, const Expr *E, LValue &Obj, const CXXRecordDecl *DerivedDecl, const CXXBaseSpecifier *Base) |
static bool | HandleLValueBasePath (EvalInfo &Info, const CastExpr *E, QualType Type, LValue &Result) |
static bool | HandleLValueMember (EvalInfo &Info, const Expr *E, LValue &LVal, const FieldDecl *FD, const ASTRecordLayout *RL=nullptr) |
Update LVal to refer to the given field, which must be a member of the type currently described by LVal. More... | |
static bool | HandleLValueIndirectMember (EvalInfo &Info, const Expr *E, LValue &LVal, const IndirectFieldDecl *IFD) |
Update LVal to refer to the given indirect field. More... | |
static bool | HandleSizeof (EvalInfo &Info, SourceLocation Loc, QualType Type, CharUnits &Size) |
Get the size of the given type in char units. More... | |
static bool | HandleLValueArrayAdjustment (EvalInfo &Info, const Expr *E, LValue &LVal, QualType EltTy, APSInt Adjustment) |
Update a pointer value to model pointer arithmetic. More... | |
static bool | HandleLValueArrayAdjustment (EvalInfo &Info, const Expr *E, LValue &LVal, QualType EltTy, int64_t Adjustment) |
static bool | HandleLValueComplexElement (EvalInfo &Info, const Expr *E, LValue &LVal, QualType EltTy, bool Imag) |
Update an lvalue to refer to a component of a complex number. More... | |
static bool | handleLValueToRValueConversion (EvalInfo &Info, const Expr *Conv, QualType Type, const LValue &LVal, APValue &RVal) |
Perform an lvalue-to-rvalue conversion on the given glvalue. More... | |
static bool | evaluateVarDeclInit (EvalInfo &Info, const Expr *E, const VarDecl *VD, CallStackFrame *Frame, APValue *&Result) |
Try to evaluate the initializer for a variable declaration. More... | |
static bool | IsConstNonVolatile (QualType T) |
static unsigned | getBaseIndex (const CXXRecordDecl *Derived, const CXXRecordDecl *Base) |
Get the base index of the given base class within an APValue representing the given derived class. More... | |
static APSInt | extractStringLiteralCharacter (EvalInfo &Info, const Expr *Lit, uint64_t Index) |
Extract the value of a character from a string literal. More... | |
static void | expandStringLiteral (EvalInfo &Info, const Expr *Lit, APValue &Result) |
static void | expandArray (APValue &Array, unsigned Index) |
static bool | isReadByLvalueToRvalueConversion (QualType T) |
Determine whether a type would actually be read by an lvalue-to-rvalue conversion. More... | |
static bool | diagnoseUnreadableFields (EvalInfo &Info, const Expr *E, QualType T) |
Diagnose an attempt to read from any unreadable field within the specified type, which might be a class type. More... | |
template<typename SubobjectHandler > | |
SubobjectHandler::result_type | findSubobject (EvalInfo &Info, const Expr *E, const CompleteObject &Obj, const SubobjectDesignator &Sub, SubobjectHandler &handler) |
Find the designated sub-object of an rvalue. More... | |
static bool | extractSubobject (EvalInfo &Info, const Expr *E, const CompleteObject &Obj, const SubobjectDesignator &Sub, APValue &Result) |
Extract the designated sub-object of an rvalue. More... | |
static bool | modifySubobject (EvalInfo &Info, const Expr *E, const CompleteObject &Obj, const SubobjectDesignator &Sub, APValue &NewVal) |
Update the designated sub-object of an rvalue to the given value. More... | |
static unsigned | FindDesignatorMismatch (QualType ObjType, const SubobjectDesignator &A, const SubobjectDesignator &B, bool &WasArrayIndex) |
Find the position where two subobject designators diverge, or equivalently the length of the common initial subsequence. More... | |
static bool | AreElementsOfSameArray (QualType ObjType, const SubobjectDesignator &A, const SubobjectDesignator &B) |
Determine whether the given subobject designators refer to elements of the same array object. More... | |
static CompleteObject | findCompleteObject (EvalInfo &Info, const Expr *E, AccessKinds AK, const LValue &LVal, QualType LValType) |
Find the complete object to which an LValue refers. More... | |
static bool | handleAssignment (EvalInfo &Info, const Expr *E, const LValue &LVal, QualType LValType, APValue &Val) |
Perform an assignment of Val to LVal. Takes ownership of Val. More... | |
static bool | isOverflowingIntegerType (ASTContext &Ctx, QualType T) |
static bool | handleCompoundAssignment (EvalInfo &Info, const Expr *E, const LValue &LVal, QualType LValType, QualType PromotedLValType, BinaryOperatorKind Opcode, const APValue &RVal) |
Perform a compound assignment of LVal <op>= RVal. More... | |
static bool | handleIncDec (EvalInfo &Info, const Expr *E, const LValue &LVal, QualType LValType, bool IsIncrement, APValue *Old) |
Perform an increment or decrement on LVal. More... | |
static bool | EvaluateObjectArgument (EvalInfo &Info, const Expr *Object, LValue &This) |
Build an lvalue for the object argument of a member function call. More... | |
static const ValueDecl * | HandleMemberPointerAccess (EvalInfo &Info, QualType LVType, LValue &LV, const Expr *RHS, bool IncludeMember=true) |
HandleMemberPointerAccess - Evaluate a member access operation and build an lvalue referring to the result. More... | |
static const ValueDecl * | HandleMemberPointerAccess (EvalInfo &Info, const BinaryOperator *BO, LValue &LV, bool IncludeMember=true) |
static bool | HandleBaseToDerivedCast (EvalInfo &Info, const CastExpr *E, LValue &Result) |
HandleBaseToDerivedCast - Apply the given base-to-derived cast operation on the provided lvalue, which currently refers to the base object. More... | |
static bool | EvaluateVarDecl (EvalInfo &Info, const VarDecl *VD) |
static bool | EvaluateDecl (EvalInfo &Info, const Decl *D) |
static bool | EvaluateCond (EvalInfo &Info, const VarDecl *CondDecl, const Expr *Cond, bool &Result) |
Evaluate a condition (either a variable declaration or an expression). More... | |
static EvalStmtResult | EvaluateStmt (StmtResult &Result, EvalInfo &Info, const Stmt *S, const SwitchCase *SC=nullptr) |
static EvalStmtResult | EvaluateLoopBody (StmtResult &Result, EvalInfo &Info, const Stmt *Body, const SwitchCase *Case=nullptr) |
Evaluate the body of a loop, and translate the result as appropriate. More... | |
static EvalStmtResult | EvaluateSwitch (StmtResult &Result, EvalInfo &Info, const SwitchStmt *SS) |
Evaluate a switch statement. More... | |
static bool | CheckTrivialDefaultConstructor (EvalInfo &Info, SourceLocation Loc, const CXXConstructorDecl *CD, bool IsValueInitialization) |
CheckTrivialDefaultConstructor - Check whether a constructor is a trivial default constructor. More... | |
static bool | CheckConstexprFunction (EvalInfo &Info, SourceLocation CallLoc, const FunctionDecl *Declaration, const FunctionDecl *Definition, const Stmt *Body) |
CheckConstexprFunction - Check that a function can be called in a constant expression. More... | |
static bool | hasFields (const CXXRecordDecl *RD) |
Determine if a class has any fields that might need to be copied by a trivial copy or move operation. More... | |
static bool | EvaluateArgs (ArrayRef< const Expr *> Args, ArgVector &ArgValues, EvalInfo &Info) |
EvaluateArgs - Evaluate the arguments to a function call. More... | |
static bool | HandleFunctionCall (SourceLocation CallLoc, const FunctionDecl *Callee, const LValue *This, ArrayRef< const Expr *> Args, const Stmt *Body, EvalInfo &Info, APValue &Result, const LValue *ResultSlot) |
Evaluate a function call. More... | |
static bool | HandleConstructorCall (const Expr *E, const LValue &This, APValue *ArgValues, const CXXConstructorDecl *Definition, EvalInfo &Info, APValue &Result) |
Evaluate a constructor call. More... | |
static bool | HandleConstructorCall (const Expr *E, const LValue &This, ArrayRef< const Expr *> Args, const CXXConstructorDecl *Definition, EvalInfo &Info, APValue &Result) |
static bool | getBytesReturnedByAllocSizeCall (const ASTContext &Ctx, const CallExpr *Call, llvm::APInt &Result) |
Attempts to compute the number of bytes available at the pointer returned by a function with the alloc_size attribute. More... | |
static bool | getBytesReturnedByAllocSizeCall (const ASTContext &Ctx, const LValue &LVal, llvm::APInt &Result) |
Convenience function. More... | |
static bool | evaluateLValueAsAllocSize (EvalInfo &Info, APValue::LValueBase Base, LValue &Result) |
Attempts to evaluate the given LValueBase as the result of a call to a function with the alloc_size attribute. More... | |
static CharUnits | GetAlignOfType (EvalInfo &Info, QualType T) |
static CharUnits | GetAlignOfExpr (EvalInfo &Info, const Expr *E) |
static bool | HandleClassZeroInitialization (EvalInfo &Info, const Expr *E, const RecordDecl *RD, const LValue &This, APValue &Result) |
Perform zero-initialization on an object of non-union class type. More... | |
static bool | EvaluateRecord (const Expr *E, const LValue &This, APValue &Result, EvalInfo &Info) |
static bool | EvaluateVector (const Expr *E, APValue &Result, EvalInfo &Info) |
static bool | EvaluateArray (const Expr *E, const LValue &This, APValue &Result, EvalInfo &Info) |
static int | EvaluateBuiltinClassifyType (const CallExpr *E, const LangOptions &LangOpts) |
EvaluateBuiltinClassifyType - Evaluate __builtin_classify_type the same way as GCC. More... | |
template<typename LValue > | |
static bool | EvaluateBuiltinConstantPForLValue (const LValue &LV) |
EvaluateBuiltinConstantPForLValue - Determine the result of __builtin_constant_p when applied to the given lvalue. More... | |
static bool | EvaluateBuiltinConstantP (ASTContext &Ctx, const Expr *Arg) |
EvaluateBuiltinConstantP - Evaluate __builtin_constant_p as similarly to GCC as we can manage. More... | |
static QualType | getObjectType (APValue::LValueBase B) |
Retrieves the "underlying object type" of the given expression, as used by __builtin_object_size. More... | |
static const Expr * | ignorePointerCastsAndParens (const Expr *E) |
A more selective version of E->IgnoreParenCasts for tryEvaluateBuiltinObjectSize. More... | |
static bool | isDesignatorAtObjectEnd (const ASTContext &Ctx, const LValue &LVal) |
Checks to see if the given LValue's Designator is at the end of the LValue's record layout. More... | |
static bool | refersToCompleteObject (const LValue &LVal) |
Tests to see if the LValue has a user-specified designator (that isn't necessarily valid). More... | |
static bool | isUserWritingOffTheEnd (const ASTContext &Ctx, const LValue &LVal) |
Attempts to detect a user writing into a piece of memory that's impossible to figure out the size of by just using types. More... | |
static bool | convertUnsignedAPIntToCharUnits (const llvm::APInt &Int, CharUnits &Result) |
Converts the given APInt to CharUnits, assuming the APInt is unsigned. More... | |
static bool | determineEndOffset (EvalInfo &Info, SourceLocation ExprLoc, unsigned Type, const LValue &LVal, CharUnits &EndOffset) |
Helper for tryEvaluateBuiltinObjectSize – Given an LValue, this will determine how many bytes exist from the beginning of the object to either the end of the current subobject, or the end of the object itself, depending on what the LValue looks like + the value of Type. More... | |
static bool | tryEvaluateBuiltinObjectSize (const Expr *E, unsigned Type, EvalInfo &Info, uint64_t &Size) |
Tries to evaluate the __builtin_object_size for E . More... | |
static bool | HasSameBase (const LValue &A, const LValue &B) |
static bool | isOnePastTheEndOfCompleteObject (const ASTContext &Ctx, const LValue &LV) |
Determine whether this is a pointer past the end of the complete object referred to by the lvalue. More... | |
static void | addOrSubLValueAsInteger (APValue &LVal, const APSInt &Index, bool IsSub) |
static bool | TryEvaluateBuiltinNaN (const ASTContext &Context, QualType ResultTy, const Expr *Arg, bool SNaN, llvm::APFloat &Result) |
static bool | EvaluateVoid (const Expr *E, EvalInfo &Info) |
static bool | FastEvaluateAsRValue (const Expr *Exp, Expr::EvalResult &Result, const ASTContext &Ctx, bool &IsConst) |
static bool | hasUnacceptableSideEffect (Expr::EvalStatus &Result, Expr::SideEffectsKind SEK) |
static ICEDiag | NoDiag () |
static ICEDiag | Worst (ICEDiag A, ICEDiag B) |
static ICEDiag | CheckEvalInICE (const Expr *E, const ASTContext &Ctx) |
static ICEDiag | CheckICE (const Expr *E, const ASTContext &Ctx) |
static bool | EvaluateCPlusPlus11IntegralConstantExpr (const ASTContext &Ctx, const Expr *E, llvm::APSInt *Value, SourceLocation *Loc) |
Evaluate an expression as a C++11 integral constant expression. More... | |
#define ABSTRACT_STMT | ( | Node | ) |
#define BUILTIN_TYPE | ( | ID, | |
SINGLETON_ID | |||
) |
#define DEPENDENT_TYPE | ( | ID, | |
BASE | |||
) | case Type::ID: |
#define FLOATING_TYPE | ( | ID, | |
SINGLETON_ID | |||
) | case BuiltinType::ID: return real_type_class; |
#define IMAGE_TYPE | ( | ImgType, | |
Id, | |||
SingletonId, | |||
Access, | |||
Suffix | |||
) | case BuiltinType::Id: |
#define NON_CANONICAL_TYPE | ( | ID, | |
BASE | |||
) | case Type::ID: |
#define NON_CANONICAL_UNLESS_DEPENDENT_TYPE | ( | ID, | |
BASE | |||
) | case Type::ID: |
#define PLACEHOLDER_TYPE | ( | ID, | |
SINGLETON_ID | |||
) | case BuiltinType::ID: break; |
#define SIGNED_TYPE | ( | ID, | |
SINGLETON_ID | |||
) | case BuiltinType::ID: return integer_type_class; |
#define STMT | ( | Node, | |
Base | |||
) | case Expr::Node##Class: |
#define TYPE | ( | ID, | |
BASE | |||
) |
enum AccessKinds |
Kinds of access we can perform on an object, for diagnostics.
Enumerator | |
---|---|
AK_Read | |
AK_Assign | |
AK_Increment | |
AK_Decrement |
Definition at line 2632 of file ExprConstant.cpp.
enum CheckSubobjectKind |
Definition at line 207 of file ExprConstant.cpp.
enum EvalStmtResult |
Definition at line 3688 of file ExprConstant.cpp.
enum ICEKind |
Definition at line 10223 of file ExprConstant.cpp.
Definition at line 8192 of file ExprConstant.cpp.
References clang::Error, EvaluateComplex(), EvaluateFloat(), EvaluateLValue(), clang::CharUnits::fromQuantity(), clang::Decl::getDeclContext(), clang::APValue::getInt(), clang::AddrLabelExpr::getLabel(), clang::BinaryOperator::getLHS(), clang::APValue::getLValueBase(), clang::APValue::getLValueOffset(), clang::BinaryOperator::getOpcode(), clang::CharUnits::getQuantity(), clang::BinaryOperator::getRHS(), clang::Expr::getType(), HandleConversionToBool(), handleIntIntBinOp(), clang::APValue::hasLValuePath(), clang::BinaryOperator::isAdditiveOp(), clang::Type::isAnyComplexType(), clang::BinaryOperator::isAssignmentOp(), clang::APValue::isInt(), clang::Type::isIntegralOrEnumerationType(), clang::BinaryOperator::isLogicalOp(), clang::APValue::isLValue(), clang::Type::isRealFloatingType(), clang::Type::isUnsignedIntegerOrEnumerationType(), and clang::CharUnits::isZero().
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Determine whether the given subobject designators refer to elements of the same array object.
Definition at line 2966 of file ExprConstant.cpp.
References FindDesignatorMismatch().
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Cast an lvalue referring to a base subobject to a derived class, by truncating the lvalue's path to the given length.
Definition at line 2210 of file ExprConstant.cpp.
Referenced by HandleBaseToDerivedCast(), and HandleLValueBase().
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Check that this core constant expression value is a valid value for a constant expression.
If not, report an appropriate diagnostic. Does not check that the expression is of literal type.
Definition at line 1777 of file ExprConstant.cpp.
References clang::Type::castAsArrayTypeUnsafe(), clang::Type::getAs(), clang::ArrayType::getElementType(), clang::APValue::isArray(), and clang::APValue::isUninit().
Referenced by clang::Expr::EvaluateAsInitializer(), and EvaluateAsRValue().
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CheckConstexprFunction - Check that a function can be called in a constant expression.
Definition at line 4169 of file ExprConstant.cpp.
References bool, clang::InheritedConstructor::getConstructor(), clang::CXXConstructorDecl::getInheritedConstructor(), clang::Decl::getLocation(), clang::FunctionDecl::isConstexpr(), and clang::Decl::isInvalidDecl().
Referenced by HandleConstructorCall().
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Perform the given integer operation, which is known to need at most BitWidth bits, and check for overflow in the original type (if that type was not an unsigned type).
Definition at line 2059 of file ExprConstant.cpp.
References clang::Expr::getExprLoc(), clang::Expr::getType(), and HandleOverflow().
Referenced by handleIntIntBinOp().
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Definition at line 10247 of file ExprConstant.cpp.
References clang::Expr::EvaluateAsRValue(), clang::Stmt::getLocStart(), clang::Expr::EvalStatus::HasSideEffects, clang::APValue::isInt(), NoDiag(), and clang::Expr::EvalResult::Val.
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Definition at line 10256 of file ExprConstant.cpp.
References clang::Stmt::getLocStart(), clang::Stmt::getStmtClass(), clang::Expr::getType(), clang::Type::isIntegralOrEnumerationType(), clang::Expr::isRValue(), clang::Expr::isValueDependent(), NoDiag(), and clang::Stmt::NoStmtClass.
Referenced by clang::Expr::isCXX98IntegralConstantExpr(), and clang::Expr::isIntegerConstantExpr().
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Check that this core constant expression is of literal type, and if not, produce an appropriate diagnostic.
Definition at line 1744 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isLiteralType(), and clang::Expr::isRValue().
Referenced by EvaluateAsRValue(), and EvaluateInPlace().
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Check that this reference or pointer core constant expression is a valid value for an address or reference constant expression.
Return true if we can fold this expression, whether or not it's a constant expression.
Definition at line 1653 of file ExprConstant.cpp.
References IsGlobalLValue(), clang::Type::isReferenceType(), and NoteLValueLocation().
Referenced by clang::Expr::EvaluateAsLValue().
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Member pointers are constant expressions unless they point to a non-virtual dllimport member function.
Definition at line 1731 of file ExprConstant.cpp.
References clang::APValue::getMemberPointerDecl(), and clang::Decl::hasAttr().
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CheckTrivialDefaultConstructor - Check whether a constructor is a trivial default constructor.
If so, we'll fold it whether or not it's marked as constexpr. If it is marked as constexpr, we will never implicitly define it, so we need special handling.
Definition at line 4144 of file ExprConstant.cpp.
References clang::Decl::getLocation(), clang::FunctionDecl::isConstexpr(), clang::CXXConstructorDecl::isDefaultConstructor(), and clang::FunctionDecl::isTrivial().
Converts the given APInt to CharUnits, assuming the APInt is unsigned.
Fails if the conversion would cause loss of precision.
Definition at line 7503 of file ExprConstant.cpp.
References clang::CharUnits::fromQuantity(), and max().
Referenced by determineEndOffset().
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Produce a string describing the given constexpr call.
Definition at line 1531 of file ExprConstant.cpp.
References clang::APValue::printPretty().
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Helper for tryEvaluateBuiltinObjectSize – Given an LValue, this will determine how many bytes exist from the beginning of the object to either the end of the current subobject, or the end of the object itself, depending on what the LValue looks like + the value of Type.
If this returns false, the value of Result is undefined.
Definition at line 7518 of file ExprConstant.cpp.
References convertUnsignedAPIntToCharUnits(), getBytesReturnedByAllocSizeCall(), getObjectType(), HandleSizeof(), clang::Type::isFunctionType(), clang::Type::isIncompleteType(), clang::QualType::isNull(), isUserWritingOffTheEnd(), refersToCompleteObject(), and clang::Result.
Referenced by tryEvaluateBuiltinObjectSize().
Diagnose an attempt to read from any unreadable field within the specified type, which might be a class type.
Definition at line 2598 of file ExprConstant.cpp.
References clang::CXXRecordDecl::bases(), clang::RecordDecl::fields(), clang::Type::getAsCXXRecordDecl(), clang::Type::getBaseElementTypeUnsafe(), clang::Expr::getType(), clang::CXXRecordDecl::hasMutableFields(), isReadByLvalueToRvalueConversion(), and clang::TagDecl::isUnion().
Definition at line 2008 of file ExprConstant.cpp.
References clang::Type::castAs(), Evaluate(), clang::APValue::getFloat(), clang::APValue::getInt(), clang::Expr::getType(), clang::APValue::getVectorElt(), clang::APValue::getVectorLength(), clang::APValue::isFloat(), clang::APValue::isInt(), and clang::APValue::isVector().
Referenced by EvaluateVector().
Definition at line 1871 of file ExprConstant.cpp.
References clang::APValue::getLValueBase(), clang::APValue::getLValueOffset(), clang::ValueDecl::isWeak(), and clang::CharUnits::isZero().
Referenced by HandleConversionToBool().
Definition at line 9901 of file ExprConstant.cpp.
References clang::C, EvaluateArray(), EvaluateAtomic(), EvaluateComplex(), EvaluateFloat(), EvaluateLValue(), EvaluateMemberPointer(), EvaluatePointer(), EvaluateRecord(), EvaluateVector(), EvaluateVoid(), clang::QualType::getAtomicUnqualifiedType(), clang::Expr::getType(), clang::Type::hasPointerRepresentation(), clang::Type::isAnyComplexType(), clang::Type::isArrayType(), clang::Type::isAtomicType(), clang::Type::isFunctionType(), clang::Expr::isGLValue(), clang::Type::isIntegralOrEnumerationType(), clang::Type::isMemberPointerType(), clang::Type::isRealFloatingType(), clang::Type::isRecordType(), clang::Type::isVectorType(), clang::Type::isVoidType(), and P.
Referenced by EvalAndBitcastToAPInt(), EvaluateAsBooleanCondition(), EvaluateAsRValue(), EvaluateComplex(), EvaluateIgnoredValue(), EvaluateInPlace(), HandleConstructorCall(), and handleLValueToRValueConversion().
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EvaluateArgs - Evaluate the arguments to a function call.
Definition at line 4238 of file ExprConstant.cpp.
Referenced by HandleConstructorCall(), and HandleFunctionCall().
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Definition at line 6784 of file ExprConstant.cpp.
References clang::Error, EvaluateLValue(), clang::InitListExpr::getArrayFiller(), clang::InitListExpr::getInit(), clang::InitListExpr::getNumInits(), clang::ConstantArrayType::getSize(), clang::Expr::getType(), clang::InitListExpr::hasArrayFiller(), clang::Type::isArrayType(), clang::Expr::isRValue(), clang::InitListExpr::isStringLiteralInit(), and clang::APValue::isUninit().
Referenced by Evaluate(), and EvaluateInPlace().
Definition at line 1920 of file ExprConstant.cpp.
References Evaluate(), HandleConversionToBool(), and clang::Expr::isRValue().
Referenced by EvaluateCond(), and HandleConstructorCall().
EvaluateAsRValue - Try to evaluate this expression, performing an implicit lvalue-to-rvalue cast if it is an lvalue.
Definition at line 10011 of file ExprConstant.cpp.
References CheckConstantExpression(), CheckLiteralType(), Evaluate(), clang::Expr::getExprLoc(), clang::Expr::getType(), handleLValueToRValueConversion(), clang::Expr::isGLValue(), clang::QualType::isNull(), and clang::Result.
Referenced by clang::Expr::EvaluateAsBooleanCondition(), clang::Expr::EvaluateAsFloat(), clang::Expr::EvaluateAsInt(), clang::Expr::EvaluateAsRValue(), clang::Expr::EvaluateForOverflow(), clang::Expr::EvaluateKnownConstInt(), clang::Expr::isEvaluatable(), and tryEvaluateBuiltinObjectSize().
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Definition at line 9848 of file ExprConstant.cpp.
References clang::CallExpr::getBuiltinCallee(), clang::CastExpr::getCastKind(), clang::CastExpr::getSubExpr(), clang::Expr::getType(), clang::Type::isAtomicType(), and clang::Expr::isRValue().
Referenced by Evaluate(), and EvaluateInPlace().
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EvaluateBuiltinClassifyType - Evaluate __builtin_classify_type the same way as GCC.
Definition at line 7138 of file ExprConstant.cpp.
References clang::Auto, clang::CallExpr::getArg(), clang::Type::getAs(), clang::QualType::getCanonicalType(), clang::BuiltinType::getKind(), clang::CallExpr::getNumArgs(), clang::Expr::getType(), clang::Type::getTypeClass(), clang::Type::isMemberDataPointerType(), clang::Type::isMemberFunctionPointerType(), clang::TTK_Class, clang::TTK_Enum, clang::TTK_Interface, clang::TTK_Struct, and clang::TTK_Union.
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EvaluateBuiltinConstantP - Evaluate __builtin_constant_p as similarly to GCC as we can manage.
Definition at line 7292 of file ExprConstant.cpp.
References clang::Expr::EvaluateAsRValue(), EvaluateBuiltinConstantPForLValue(), clang::APValue::getKind(), clang::Expr::getType(), clang::Expr::EvalStatus::HasSideEffects, clang::APValue::Int, clang::Type::isAnyComplexType(), clang::Expr::isEvaluatable(), clang::Type::isFloatingType(), clang::Expr::isGLValue(), clang::Type::isIntegralOrEnumerationType(), clang::Type::isPointerType(), clang::APValue::LValue, clang::Result, and clang::Expr::EvalResult::Val.
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EvaluateBuiltinConstantPForLValue - Determine the result of __builtin_constant_p when applied to the given lvalue.
An lvalue is only "constant" if it is a pointer or reference to the first character of a string literal.
Definition at line 7285 of file ExprConstant.cpp.
Referenced by EvaluateBuiltinConstantP().
Definition at line 9347 of file ExprConstant.cpp.
References abs(), clang::C, clang::Type::castAs(), clang::Error, Evaluate(), EvaluateFloat(), EvaluateInPlace(), EvaluateInteger(), clang::Type::getAs(), clang::CastExpr::getCastKind(), clang::InitListExpr::getInit(), clang::BinaryOperator::getLHS(), clang::InitListExpr::getNumInits(), clang::UnaryOperator::getOpcode(), clang::BinaryOperator::getOpcode(), clang::BinaryOperator::getRHS(), clang::ImaginaryLiteral::getSubExpr(), clang::UnaryOperator::getSubExpr(), clang::CastExpr::getSubExpr(), clang::Expr::getType(), HandleFloatToFloatCast(), HandleFloatToIntCast(), HandleIntToFloatCast(), HandleIntToIntCast(), ilogb, clang::Type::isAnyComplexType(), clang::BinaryOperator::isAssignmentOp(), clang::Type::isComplexType(), clang::Type::isIntegerType(), clang::BinaryOperator::isPtrMemOp(), clang::Type::isRealFloatingType(), clang::Expr::isRValue(), clang::Result, and scalbn.
Referenced by addOrSubLValueAsInteger(), and Evaluate().
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Evaluate a condition (either a variable declaration or an expression).
Definition at line 3750 of file ExprConstant.cpp.
References EvaluateAsBooleanCondition(), EvaluateDecl(), and EvaluateStmt().
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Evaluate an expression as a C++11 integral constant expression.
Definition at line 10643 of file ExprConstant.cpp.
References clang::Expr::getExprLoc(), clang::APValue::getInt(), clang::Expr::getType(), clang::Expr::isCXX11ConstantExpr(), clang::APValue::isInt(), clang::Type::isIntegralOrEnumerationType(), and clang::Result.
Referenced by clang::Expr::isIntegerConstantExpr().
Definition at line 3734 of file ExprConstant.cpp.
References EvaluateVarDecl().
Referenced by EvaluateCond(), and EvaluateSwitch().
Definition at line 9122 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isRealFloatingType(), and clang::Expr::isRValue().
Referenced by addOrSubLValueAsInteger(), Evaluate(), EvaluateComplex(), and EvaluateVector().
Evaluate an expression to see if it had side-effects, and discard its result.
true
if the caller should keep evaluating. Definition at line 1569 of file ExprConstant.cpp.
References Evaluate().
Referenced by evaluateLValueAsAllocSize(), and HandleConstructorCall().
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EvaluateInPlace - Evaluate an expression in-place in an APValue.
In some cases, the in-place evaluation is essential, since later initializers for an object can indirectly refer to subobjects which were initialized earlier.
Definition at line 9983 of file ExprConstant.cpp.
References CheckLiteralType(), Evaluate(), EvaluateArray(), EvaluateAtomic(), EvaluateRecord(), clang::QualType::getAtomicUnqualifiedType(), clang::Expr::getType(), clang::Type::isArrayType(), clang::Type::isAtomicType(), clang::Type::isRecordType(), clang::Expr::isRValue(), and clang::Expr::isValueDependent().
Referenced by clang::Expr::EvaluateAsInitializer(), EvaluateComplex(), EvaluatePointer(), EvaluateRecord(), EvaluateVarDecl(), and EvaluateVector().
Definition at line 7095 of file ExprConstant.cpp.
References EvaluateIntegerOrLValue(), clang::APValue::getInt(), clang::Expr::getType(), clang::APValue::isInt(), and clang::Type::isSignedIntegerOrEnumerationType().
Referenced by EvaluateComplex(), EvaluatePointer(), EvaluateSwitch(), EvaluateVector(), and GetAlignOfExpr().
EvaluateIntegerOrLValue - Evaluate an rvalue integral-typed expression, and produce either the integer value or a pointer.
GCC has a heinous extension which folds casts between pointer types and pointer-sized integral types. We support this by allowing the evaluation of an integer rvalue to produce a pointer (represented as an lvalue) instead. Some simple arithmetic on such values is supported (they are treated much like char*).
Definition at line 7089 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isIntegralOrEnumerationType(), and clang::Expr::isRValue().
Referenced by EvaluateInteger(), and EvaluatePointer().
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Evaluate the body of a loop, and translate the result as appropriate.
Definition at line 3774 of file ExprConstant.cpp.
References EvaluateStmt().
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Evaluate an expression as an lvalue.
This can be legitimately called on expressions which are not glvalues, in three cases:
Definition at line 5149 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Type::isFunctionType(), clang::Expr::isGLValue(), and clang::Type::isVoidType().
Referenced by addOrSubLValueAsInteger(), Evaluate(), EvaluateArray(), clang::Expr::EvaluateAsLValue(), evaluateLValueAsAllocSize(), EvaluateObjectArgument(), and HandleConstructorCall().
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Attempts to evaluate the given LValueBase as the result of a call to a function with the alloc_size attribute.
If it was possible to do so, this function will return true, make Result's Base point to said function call, and mark Result's Base as invalid.
Definition at line 5503 of file ExprConstant.cpp.
References clang::Type::castAs(), clang::Error, EvaluateIgnoredValue(), EvaluateLValue(), EvaluatePointer(), clang::VarDecl::getAnyInitializer(), clang::BlockExpr::getBlockDecl(), clang::ObjCBoxedExpr::getSubExpr(), clang::Expr::getType(), clang::ValueDecl::getType(), HandleLValueMember(), handleLValueToRValueConversion(), clang::BlockDecl::hasCaptures(), clang::Expr::IgnoreParens(), clang::QualType::isConstQualified(), clang::CXXThisExpr::isImplicit(), clang::isLambdaCallOperator(), clang::VarDecl::isLocalVarDecl(), and clang::Result.
Referenced by EvaluatePointer().
Definition at line 6028 of file ExprConstant.cpp.
References clang::Type::castAs(), clang::Error, clang::Type::getAsCXXRecordDecl(), clang::CastExpr::getCastKind(), clang::UnaryOperator::getSubExpr(), clang::CastExpr::getSubExpr(), clang::Expr::getType(), clang::Type::isMemberPointerType(), clang::Expr::isRValue(), clang::CastExpr::path_begin(), clang::CastExpr::path_empty(), clang::CastExpr::path_end(), clang::Result, and clang::T.
Referenced by Evaluate(), and HandleMemberPointerAccess().
Build an lvalue for the object argument of a member function call.
Definition at line 3523 of file ExprConstant.cpp.
References EvaluateLValue(), EvaluatePointer(), EvaluateTemporary(), clang::Expr::getType(), clang::Expr::isGLValue(), clang::Type::isLiteralType(), and clang::Type::isPointerType().
Referenced by HandleConstructorCall(), and HandleMemberPointerAccess().
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Definition at line 5630 of file ExprConstant.cpp.
References clang::Type::castAs(), EvaluateInPlace(), EvaluateInteger(), EvaluateIntegerOrLValue(), evaluateLValueAsAllocSize(), clang::CharUnits::fromQuantity(), clang::CastExpr::getCastKind(), clang::ArrayType::getElementType(), clang::APValue::getInt(), clang::BinaryOperator::getLHS(), clang::BinaryOperator::getOpcode(), clang::BinaryOperator::getRHS(), clang::UnaryOperator::getSubExpr(), clang::CastExpr::getSubExpr(), clang::Expr::getType(), HandleBaseToDerivedCast(), HandleLValueArrayAdjustment(), HandleLValueBasePath(), handleLValueToRValueConversion(), clang::Type::hasPointerRepresentation(), clang::Expr::isGLValue(), clang::APValue::isInt(), clang::Type::isPointerType(), clang::Expr::isRValue(), clang::Type::isVoidPointerType(), negateAsSigned(), and clang::Result.
Referenced by Evaluate(), evaluateLValueAsAllocSize(), EvaluateObjectArgument(), HandleConstructorCall(), and tryEvaluateBuiltinObjectSize().
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Definition at line 6492 of file ExprConstant.cpp.
References EvaluateInPlace(), clang::Expr::getType(), clang::Type::isRecordType(), clang::Expr::isRValue(), and clang::Result.
Referenced by Evaluate(), and EvaluateInPlace().
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Definition at line 3855 of file ExprConstant.cpp.
References clang::Stmt::getStmtClass().
Referenced by EvaluateCond(), EvaluateLoopBody(), EvaluateSwitch(), HandleConstructorCall(), and HandleFunctionCall().
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Evaluate a switch statement.
Definition at line 3793 of file ExprConstant.cpp.
References EvaluateDecl(), EvaluateInteger(), clang::Expr::EvaluateKnownConstInt(), EvaluateStmt(), clang::SwitchStmt::getBody(), clang::SwitchStmt::getCond(), clang::SwitchStmt::getConditionVariable(), clang::SwitchStmt::getInit(), clang::CaseStmt::getLHS(), clang::SwitchCase::getLocStart(), clang::SwitchCase::getNextSwitchCase(), clang::CaseStmt::getRHS(), and clang::SwitchStmt::getSwitchCaseList().
Evaluate an expression of record type as a temporary.
Definition at line 6548 of file ExprConstant.cpp.
References clang::Type::castAs(), clang::UnaryOperator::getSubExpr(), clang::Expr::getType(), clang::Type::isRecordType(), clang::Expr::isRValue(), clang::APValue::isVector(), and clang::Result.
Referenced by EvaluateObjectArgument(), and HandleConstructorCall().
Definition at line 3704 of file ExprConstant.cpp.
References EvaluateInPlace(), clang::VarDecl::getInit(), clang::DeclaratorDecl::getLocStart(), clang::ValueDecl::getType(), clang::VarDecl::hasLocalStorage(), clang::Expr::isValueDependent(), and clang::Result.
Referenced by EvaluateDecl().
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Try to evaluate the initializer for a variable declaration.
Info | Information about the ongoing evaluation. |
E | An expression to be used when printing diagnostics. |
VD | The variable whose initializer should be obtained. |
Frame | The frame in which the variable was created. Must be null if this variable is not local to the evaluation. |
Result | Filled in with a pointer to the value of the variable. |
Definition at line 2397 of file ExprConstant.cpp.
References clang::VarDecl::checkInitIsICE(), clang::VarDecl::evaluateValue(), clang::VarDecl::getAnyInitializer(), clang::Decl::getDeclContext(), clang::VarDecl::getEvaluatedValue(), clang::Decl::getLocation(), clang::Stmt::getLocStart(), clang::VarDecl::isInitCapture(), clang::isLambdaCallOperator(), clang::Expr::isValueDependent(), and clang::ValueDecl::isWeak().
Referenced by findCompleteObject().
Definition at line 6590 of file ExprConstant.cpp.
References clang::Type::castAs(), clang::Error, EvalAndBitcastToAPInt(), EvaluateFloat(), EvaluateInPlace(), EvaluateInteger(), clang::APValue::getArrayFiller(), clang::Type::getAs(), clang::CastExpr::getCastKind(), clang::ArrayType::getElementType(), clang::VectorType::getElementType(), clang::InitListExpr::getInit(), clang::VectorType::getNumElements(), clang::InitListExpr::getNumInits(), clang::ConstantArrayType::getSize(), clang::UnaryOperator::getSubExpr(), clang::CastExpr::getSubExpr(), clang::Expr::getType(), clang::APValue::getVectorElt(), clang::APValue::getVectorLength(), clang::APValue::hasArrayFiller(), clang::APValue::isArray(), clang::Type::isIntegerType(), clang::APValue::isLValue(), clang::Type::isRealFloatingType(), clang::Expr::isRValue(), clang::Type::isSignedIntegerType(), clang::Type::isVectorType(), clang::Result, and v.
Referenced by Evaluate().
Definition at line 9892 of file ExprConstant.cpp.
References clang::Expr::getType(), clang::Expr::isRValue(), and clang::Type::isVoidType().
Referenced by Evaluate().
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Definition at line 2553 of file ExprConstant.cpp.
References clang::APValue::getArrayInitializedElts(), clang::APValue::getArraySize(), max(), and min().
Definition at line 2530 of file ExprConstant.cpp.
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Extract the value of a character from a string literal.
Definition at line 2503 of file ExprConstant.cpp.
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Extract the designated sub-object of an rvalue.
Definition at line 2860 of file ExprConstant.cpp.
References findSubobject().
Referenced by HandleConstructorCall(), and handleLValueToRValueConversion().
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Definition at line 10032 of file ExprConstant.cpp.
References clang::ASTContext::getLangOpts(), clang::Expr::getType(), clang::Type::isArrayType(), clang::QualType::isNull(), clang::Type::isRecordType(), clang::Expr::isRValue(), and clang::Expr::EvalResult::Val.
Referenced by clang::Expr::EvaluateAsRValue(), and clang::Expr::EvaluateForOverflow().
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Find the complete object to which an LValue refers.
Definition at line 2986 of file ExprConstant.cpp.
References AK_Read, evaluateVarDeclInit(), clang::QualType::getAddressSpace(), clang::VarDecl::getDefinition(), clang::Expr::getExprLoc(), clang::Decl::getLocation(), clang::ValueDecl::getType(), clang::VarDecl::hasDefinition(), clang::VarDecl::isConstexpr(), clang::QualType::isConstQualified(), clang::Type::isFloatingType(), clang::Type::isIntegralOrEnumerationType(), clang::Decl::isInvalidDecl(), clang::QualType::isVolatileQualified(), NoteLValueLocation(), clang::opencl_constant, clang::QualType::removeLocalConst(), and clang::SD_Static.
Referenced by handleAssignment(), handleCompoundAssignment(), handleIncDec(), and handleLValueToRValueConversion().
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Find the position where two subobject designators diverge, or equivalently the length of the common initial subsequence.
Definition at line 2930 of file ExprConstant.cpp.
Referenced by AreElementsOfSameArray().
SubobjectHandler::result_type findSubobject | ( | EvalInfo & | Info, |
const Expr * | E, | ||
const CompleteObject & | Obj, | ||
const SubobjectDesignator & | Sub, | ||
SubobjectHandler & | handler | ||
) |
Find the designated sub-object of an rvalue.
Definition at line 2661 of file ExprConstant.cpp.
Referenced by extractSubobject(), and modifySubobject().
Definition at line 5796 of file ExprConstant.cpp.
References clang::Type::castAs(), EvaluateInteger(), clang::CharUnits::fromQuantity(), GetAlignOfType(), clang::CallExpr::getArg(), clang::CallExpr::getBuiltinCallee(), clang::APValue::getInt(), clang::CallExpr::getNumArgs(), clang::Type::getPointeeType(), clang::CharUnits::getQuantity(), clang::Expr::getType(), HandleIntToIntCast(), HandleLValueArrayAdjustment(), handleLValueToRValueConversion(), clang::Expr::IgnoreParens(), clang::APValue::isInt(), IsStringLiteralCall(), and clang::Result.
Definition at line 5782 of file ExprConstant.cpp.
References clang::Type::getAs(), clang::Type::getPointeeType(), clang::QualType::getQualifiers(), clang::QualType::getTypePtr(), clang::Qualifiers::hasUnaligned(), and clang::CharUnits::One().
Referenced by GetAlignOfExpr().
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Get the base index of the given base class within an APValue representing the given derived class.
Definition at line 2489 of file ExprConstant.cpp.
References clang::CXXRecordDecl::getCanonicalDecl().
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Attempts to compute the number of bytes available at the pointer returned by a function with the alloc_size attribute.
Returns true if we were successful. Places an unsigned number into Result
.
This expects the given CallExpr to be a call to a function with an alloc_size attribute.
Definition at line 5442 of file ExprConstant.cpp.
References clang::CallExpr::getNumArgs(), clang::ASTContext::getSizeType(), and clang::ASTContext::getTypeSize().
Referenced by determineEndOffset(), and getBytesReturnedByAllocSizeCall().
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Convenience function.
LVal's base must be a call to an alloc_size function.
Definition at line 5489 of file ExprConstant.cpp.
References getBytesReturnedByAllocSizeCall().
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Definition at line 1844 of file ExprConstant.cpp.
Referenced by HasSameBase(), IsWeakLValue(), and isZeroSized().
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Retrieves the "underlying object type" of the given expression, as used by __builtin_object_size.
Definition at line 7336 of file ExprConstant.cpp.
References clang::Expr::getType(), and clang::ValueDecl::getType().
Referenced by clang::Sema::checkInitMethod(), determineEndOffset(), clang::ObjCObjectPointerType::getInterfaceDecl(), clang::ObjCObjectPointerType::getInterfaceType(), clang::ObjCObjectPointerType::getNumProtocols(), clang::ObjCObjectPointerType::getSuperClassType(), clang::ObjCObjectPointerType::getTypeArgs(), clang::ObjCObjectPointerType::getTypeArgsAsWritten(), clang::ObjCObjectPointerType::isKindOfType(), clang::ObjCObjectPointerType::isObjCClassType(), clang::ObjCObjectPointerType::isObjCIdOrClassType(), clang::ObjCObjectPointerType::isObjCIdType(), clang::ObjCObjectPointerType::isObjCQualifiedClassType(), clang::ObjCObjectPointerType::isObjCQualifiedIdType(), clang::ObjCObjectPointerType::isSpecialized(), clang::ObjCObjectPointerType::isSpecializedAsWritten(), clang::ObjCObjectPointerType::isUnspecialized(), clang::ObjCObjectPointerType::qual_begin(), clang::ObjCObjectPointerType::qual_empty(), clang::ObjCObjectPointerType::qual_end(), and clang::ObjCObjectPointerType::stripObjCKindOfTypeAndQuals().
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Perform an assignment of Val to LVal. Takes ownership of Val.
Definition at line 3236 of file ExprConstant.cpp.
References AK_Assign, findCompleteObject(), and modifySubobject().
Referenced by HandleFunctionCall().
HandleBaseToDerivedCast - Apply the given base-to-derived cast operation on the provided lvalue, which currently refers to the base object.
Definition at line 3651 of file ExprConstant.cpp.
References CastToDerivedClass(), clang::Type::getAs(), clang::Type::getAsCXXRecordDecl(), clang::CXXRecordDecl::getCanonicalDecl(), clang::Type::getPointeeType(), clang::Expr::getType(), and clang::CastExpr::path_size().
Referenced by EvaluatePointer(), and HandleConstructorCall().
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Perform zero-initialization on an object of non-union class type.
C++11 [dcl.init]p5: To zero-initialize an object or reference of type T means: [...] – if T is a (possibly cv-qualified) non-union class type, each non-static data member and each base-class subobject is zero-initialized
Definition at line 6130 of file ExprConstant.cpp.
References distance(), clang::RecordDecl::field_begin(), clang::RecordDecl::field_end(), clang::Decl::isInvalidDecl(), and clang::TagDecl::isUnion().
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Perform a compound assignment of LVal <op>= RVal.
Definition at line 3355 of file ExprConstant.cpp.
References AK_Assign, and findCompleteObject().
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Evaluate a constructor call.
Definition at line 4309 of file ExprConstant.cpp.
References clang::Expr::getExprLoc(), clang::CXXRecordDecl::getNumVBases(), clang::CXXMethodDecl::getParent(), and clang::CXXConstructorDecl::isDelegatingConstructor().
Referenced by HandleConstructorCall().
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Definition at line 4452 of file ExprConstant.cpp.
References clang::CompoundStmt::body_begin(), clang::CompoundStmt::body_empty(), clang::CompoundStmt::body_end(), clang::CXXRecordDecl::captures_begin(), clang::CXXRecordDecl::captures_end(), clang::Type::castAs(), CheckConstexprFunction(), Diag(), clang::Error, Evaluate(), EvaluateArgs(), EvaluateAsBooleanCondition(), EvaluateIgnoredValue(), EvaluateLValue(), EvaluateObjectArgument(), EvaluatePointer(), EvaluateStmt(), EvaluateTemporary(), extractSubobject(), clang::FunctionTemplateDecl::findSpecialization(), clang::CallExpr::getArgs(), clang::Type::getAs(), clang::MemberExpr::getBase(), clang::FunctionDecl::getBody(), clang::CallExpr::getCallee(), clang::TagDecl::getCanonicalDecl(), clang::CastExpr::getCastKind(), clang::ChooseExpr::getChosenSubExpr(), clang::BinaryConditionalOperator::getCommon(), clang::ConditionalOperator::getCond(), clang::RecordType::getDecl(), clang::CXXDefaultArgExpr::getExpr(), clang::CXXDefaultInitExpr::getExpr(), clang::Expr::getExprLoc(), clang::ConditionalOperator::getFalseExpr(), clang::InitListExpr::getInit(), clang::CompoundLiteralExpr::getInitializer(), clang::CXXRecordDecl::getLambdaCallOperator(), clang::BinaryOperator::getLHS(), clang::MemberExpr::getMemberDecl(), clang::CallExpr::getNumArgs(), clang::InitListExpr::getNumInits(), clang::BinaryConditionalOperator::getOpaqueValue(), clang::BinaryOperator::getOpcode(), clang::DeclContext::getParent(), clang::CXXMethodDecl::getParent(), clang::FieldDecl::getParent(), clang::Type::getPointeeType(), clang::SubstNonTypeTemplateParmExpr::getReplacement(), clang::GenericSelectionExpr::getResultExpr(), clang::BinaryOperator::getRHS(), clang::OpaqueValueExpr::getSourceExpr(), clang::ParenExpr::getSubExpr(), clang::UnaryOperator::getSubExpr(), clang::CastExpr::getSubExpr(), clang::ExprWithCleanups::getSubExpr(), clang::StmtExpr::getSubStmt(), clang::FunctionDecl::getTemplateSpecializationArgs(), clang::ConditionalOperator::getTrueExpr(), clang::Expr::getType(), clang::ValueDecl::getType(), HandleBaseToDerivedCast(), HandleConstructorCall(), HandleFunctionCall(), handleIncDec(), HandleLValueBasePath(), HandleLValueIndirectMember(), HandleLValueMember(), handleLValueToRValueConversion(), HandleMemberPointerAccess(), clang::Expr::HasSideEffects(), clang::Expr::IgnoreParenCasts(), clang::Expr::IgnoreParens(), clang::MemberExpr::isArrow(), clang::Type::isFunctionPointerType(), clang::FunctionDecl::isFunctionTemplateSpecialization(), clang::CXXRecordDecl::isGenericLambda(), clang::UnaryOperator::isIncrementOp(), clang::CXXMethodDecl::isLambdaStaticInvoker(), clang::Type::isRecordType(), clang::Type::isReferenceType(), clang::Expr::isRValue(), clang::Type::isSpecificBuiltinType(), clang::CXXMethodDecl::isStatic(), and clang::Result.
Definition at line 1886 of file ExprConstant.cpp.
References clang::APValue::AddrLabelDiff, clang::APValue::Array, clang::APValue::ComplexFloat, clang::APValue::ComplexInt, EvalPointerValueAsBool(), clang::APValue::Float, clang::APValue::getComplexFloatImag(), clang::APValue::getComplexFloatReal(), clang::APValue::getComplexIntImag(), clang::APValue::getComplexIntReal(), clang::APValue::getFloat(), clang::APValue::getInt(), clang::APValue::getKind(), clang::APValue::getMemberPointerDecl(), clang::APValue::Int, clang::APValue::LValue, clang::APValue::MemberPointer, clang::APValue::Struct, clang::APValue::Uninitialized, clang::APValue::Union, and clang::APValue::Vector.
Referenced by addOrSubLValueAsInteger(), clang::Expr::EvaluateAsBooleanCondition(), and EvaluateAsBooleanCondition().
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Perform the given binary floating-point operation, in-place, on LHS.
Definition at line 2180 of file ExprConstant.cpp.
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Definition at line 1952 of file ExprConstant.cpp.
References HandleOverflow(), and clang::Result.
Referenced by EvaluateComplex().
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Definition at line 1937 of file ExprConstant.cpp.
References HandleOverflow(), and clang::Type::isSignedIntegerOrEnumerationType().
Referenced by EvaluateComplex().
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Evaluate a function call.
Definition at line 4255 of file ExprConstant.cpp.
References EvaluateArgs(), EvaluateStmt(), clang::Decl::getLocEnd(), clang::FunctionDecl::getReturnType(), handleAssignment(), handleLValueToRValueConversion(), hasFields(), clang::isLambdaCallOperator(), clang::Type::isVoidType(), and clang::Result.
Referenced by HandleConstructorCall().
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Perform an increment or decrement on LVal.
Definition at line 3506 of file ExprConstant.cpp.
References AK_Decrement, AK_Increment, and findCompleteObject().
Referenced by HandleConstructorCall().
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Perform the given binary integer operation.
Definition at line 2082 of file ExprConstant.cpp.
References CheckedIntArithmetic(), clang::Expr::getType(), and HandleOverflow().
Referenced by addOrSubLValueAsInteger().
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Definition at line 1976 of file ExprConstant.cpp.
References HandleOverflow().
Referenced by EvaluateComplex().
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Definition at line 1964 of file ExprConstant.cpp.
References clang::Type::isUnsignedIntegerOrEnumerationType(), and clang::Result.
Referenced by EvaluateComplex(), and GetAlignOfExpr().
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Update a pointer value to model pointer arithmetic.
Info | - Information about the ongoing evaluation. |
E | - The expression being evaluated, for diagnostic purposes. |
LVal | - The pointer value to be updated. |
EltTy | - The pointee type represented by LVal. |
Adjustment | - The adjustment, in objects of type EltTy, to add. |
Definition at line 2349 of file ExprConstant.cpp.
References clang::Expr::getExprLoc(), and HandleSizeof().
Referenced by EvaluatePointer(), GetAlignOfExpr(), and HandleLValueArrayAdjustment().
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Definition at line 2360 of file ExprConstant.cpp.
References HandleLValueArrayAdjustment().
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Definition at line 2253 of file ExprConstant.cpp.
References CastToDerivedClass(), clang::Type::getAsCXXRecordDecl(), clang::CXXBaseSpecifier::getType(), clang::ASTRecordLayout::getVBaseClassOffset(), HandleLValueDirectBase(), clang::Decl::isInvalidDecl(), and clang::CXXBaseSpecifier::isVirtual().
Referenced by HandleLValueBasePath().
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Definition at line 2278 of file ExprConstant.cpp.
References clang::Type::getAsCXXRecordDecl(), HandleLValueBase(), clang::CastExpr::path_begin(), and clang::CastExpr::path_end().
Referenced by EvaluatePointer(), and HandleConstructorCall().
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Update an lvalue to refer to a component of a complex number.
Info | - Information about the ongoing evaluation. |
LVal | - The lvalue to be updated. |
EltTy | - The complex number's component type. |
Imag | - False for the real component, true for the imaginary. |
Definition at line 2372 of file ExprConstant.cpp.
References clang::Expr::getExprLoc(), handleLValueToRValueConversion(), and HandleSizeof().
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Definition at line 2239 of file ExprConstant.cpp.
References clang::Decl::isInvalidDecl().
Referenced by HandleLValueBase().
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Update LVal to refer to the given indirect field.
Definition at line 2308 of file ExprConstant.cpp.
References clang::C, clang::IndirectFieldDecl::chain(), and HandleLValueMember().
Referenced by HandleConstructorCall().
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Update LVal to refer to the given field, which must be a member of the type currently described by LVal.
Definition at line 2293 of file ExprConstant.cpp.
References clang::FieldDecl::getParent(), and clang::Decl::isInvalidDecl().
Referenced by evaluateLValueAsAllocSize(), HandleConstructorCall(), and HandleLValueIndirectMember().
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Perform an lvalue-to-rvalue conversion on the given glvalue.
This can also be used for 'lvalue-to-lvalue' conversions for looking up the glvalue referred to by an entity of reference type.
Info | - Information about the ongoing evaluation. |
Conv | - The expression for which we are performing the conversion. Used for diagnostics. |
Type | - The type of the glvalue (before stripping cv-qualifiers in the case of a non-class type). |
LVal | - The glvalue on which we are attempting to perform this action. |
RVal | - The produced value will be placed here. |
Definition at line 3199 of file ExprConstant.cpp.
References AK_Read, Evaluate(), extractSubobject(), findCompleteObject(), clang::Expr::getType(), clang::QualType::isVolatileQualified(), and clang::CharUnits::Zero().
Referenced by EvaluateAsRValue(), evaluateLValueAsAllocSize(), EvaluatePointer(), GetAlignOfExpr(), HandleConstructorCall(), HandleFunctionCall(), and HandleLValueComplexElement().
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HandleMemberPointerAccess - Evaluate a member access operation and build an lvalue referring to the result.
Info | - Information about the ongoing evaluation. |
LV | - An lvalue referring to the base of the member pointer. |
RHS | - The member pointer expression. |
IncludeMember | - Specifies whether the member itself is included in the resulting LValue subobject designator. This is not possible when creating a bound member function. |
Definition at line 3549 of file ExprConstant.cpp.
References EvaluateMemberPointer().
Referenced by HandleConstructorCall(), and HandleMemberPointerAccess().
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Definition at line 3631 of file ExprConstant.cpp.
References EvaluateMemberPointer(), EvaluateObjectArgument(), clang::BinaryOperator::getLHS(), clang::BinaryOperator::getOpcode(), clang::BinaryOperator::getRHS(), clang::Expr::getType(), and HandleMemberPointerAccess().
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Definition at line 1930 of file ExprConstant.cpp.
Referenced by CheckedIntArithmetic(), HandleFloatToFloatCast(), HandleFloatToIntCast(), handleIntIntBinOp(), and HandleIntToFloatCast().
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Get the size of the given type in char units.
Definition at line 2318 of file ExprConstant.cpp.
References clang::Type::isConstantSizeType(), clang::Type::isDependentType(), clang::Type::isFunctionType(), clang::Type::isVoidType(), and clang::CharUnits::One().
Referenced by determineEndOffset(), HandleLValueArrayAdjustment(), and HandleLValueComplexElement().
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Determine if a class has any fields that might need to be copied by a trivial copy or move operation.
Definition at line 4219 of file ExprConstant.cpp.
References clang::CXXRecordDecl::bases(), clang::RecordDecl::fields(), and clang::CXXRecordDecl::isEmpty().
Referenced by HandleFunctionCall().
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Definition at line 7985 of file ExprConstant.cpp.
References clang::Decl::getCanonicalDecl(), GetLValueBaseDecl(), and IsGlobalLValue().
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Definition at line 10083 of file ExprConstant.cpp.
References clang::Expr::EvalStatus::HasSideEffects, clang::Expr::EvalStatus::HasUndefinedBehavior, clang::Expr::SE_AllowSideEffects, and clang::Expr::SE_AllowUndefinedBehavior.
Referenced by clang::Expr::EvaluateAsFloat(), clang::Expr::EvaluateAsInt(), and clang::Expr::isEvaluatable().
A more selective version of E->IgnoreParenCasts for tryEvaluateBuiltinObjectSize.
This ignores some casts/parens that serve only to change the type of E. Ex. For E = (short*)((char*)(&foo))
, returns &foo
Always returns an RValue with a pointer representation.
Definition at line 7354 of file ExprConstant.cpp.
References clang::CastExpr::getCastKind(), clang::Expr::getType(), clang::Type::hasPointerRepresentation(), clang::Expr::IgnoreParens(), and clang::Expr::isRValue().
Referenced by tryEvaluateBuiltinObjectSize().
Definition at line 2482 of file ExprConstant.cpp.
References clang::QualType::getQualifiers(), clang::Qualifiers::hasConst(), and clang::Qualifiers::hasVolatile().
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Checks to see if the given LValue's Designator is at the end of the LValue's record layout.
e.g. struct { struct { int a, b; } fst, snd; } obj; obj.fst // no obj.snd // yes obj.fst.a // no obj.fst.b // no obj.snd.a // no obj.snd.b // yes
Please note: this function is specialized for how __builtin_object_size views "objects".
If this encounters an invalid RecordDecl or otherwise cannot determine the correct result, it will always return true.
Definition at line 7390 of file ExprConstant.cpp.
References clang::ASTContext::getASTRecordLayout(), clang::ASTRecordLayout::getFieldCount(), clang::FieldDecl::getFieldIndex(), clang::FieldDecl::getParent(), clang::Decl::isInvalidDecl(), clang::TagDecl::isUnion(), and Parent.
Referenced by isUserWritingOffTheEnd().
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Definition at line 1584 of file ExprConstant.cpp.
Referenced by CheckLValueConstantExpression(), HasSameBase(), and clang::Expr::EvalResult::isGlobalLValue().
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Definition at line 1848 of file ExprConstant.cpp.
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Determine whether this is a pointer past the end of the complete object referred to by the lvalue.
Definition at line 8007 of file ExprConstant.cpp.
References clang::ASTContext::getTypeSizeInChars(), clang::Type::isIncompleteType(), and clang::APValue::swap().
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Definition at line 3250 of file ExprConstant.cpp.
References clang::ASTContext::getIntWidth(), clang::ASTContext::IntTy, and clang::Type::isSignedIntegerType().
Determine whether a type would actually be read by an lvalue-to-rvalue conversion.
If it's of class type, we may assume that the copy operation is trivial. Note that this is never true for a union type with fields (because the copy always "reads" the active member) and always true for a non-class type.
Definition at line 2578 of file ExprConstant.cpp.
References clang::CXXRecordDecl::bases(), clang::RecordDecl::field_empty(), clang::RecordDecl::fields(), clang::Type::getAsCXXRecordDecl(), clang::Type::getBaseElementTypeUnsafe(), clang::CXXRecordDecl::isEmpty(), and clang::TagDecl::isUnion().
Referenced by diagnoseUnreadableFields().
Should this call expression be treated as a string literal?
Definition at line 1578 of file ExprConstant.cpp.
References clang::CallExpr::getBuiltinCallee().
Referenced by GetAlignOfExpr().
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Attempts to detect a user writing into a piece of memory that's impossible to figure out the size of by just using types.
Definition at line 7482 of file ExprConstant.cpp.
References isDesignatorAtObjectEnd().
Referenced by determineEndOffset().
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Definition at line 1855 of file ExprConstant.cpp.
References GetLValueBaseDecl(), and clang::ValueDecl::isWeak().
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Definition at line 1860 of file ExprConstant.cpp.
References clang::Decl::getASTContext(), GetLValueBaseDecl(), clang::ValueDecl::getType(), clang::ASTContext::getTypeSize(), clang::Type::isArrayType(), and clang::Type::isIncompleteType().
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Update the designated sub-object of an rvalue to the given value.
Definition at line 2920 of file ExprConstant.cpp.
References findSubobject().
Referenced by handleAssignment().
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Negate an APSInt in place, converting it to a signed form if necessary, and preserving its value (by extending by up to one bit as needed).
Definition at line 1522 of file ExprConstant.cpp.
Referenced by EvaluatePointer().
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Definition at line 10243 of file ExprConstant.cpp.
Referenced by CheckEvalInICE(), and CheckICE().
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Definition at line 1640 of file ExprConstant.cpp.
References clang::Expr::getExprLoc(), and clang::Decl::getLocation().
Referenced by CheckLValueConstantExpression(), and findCompleteObject().
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Tests to see if the LValue has a user-specified designator (that isn't necessarily valid).
Note that this always returns 'true' if the LValue has an unsized array as its first designator entry, because there's currently no way to tell if the user typed *foo or foo[0].
Definition at line 7464 of file ExprConstant.cpp.
Referenced by determineEndOffset().
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Definition at line 1987 of file ExprConstant.cpp.
References clang::FieldDecl::getBitWidthValue(), clang::APValue::getInt(), clang::FieldDecl::isBitField(), clang::APValue::isInt(), and clang::APValue::isLValue().
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Definition at line 9127 of file ExprConstant.cpp.
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Tries to evaluate the __builtin_object_size for E
.
If successful, returns true and stores the result in Size
.
If WasError
is non-null, this will report whether the failure to evaluate is to be treated as an Error in IntExprEvaluator.
Definition at line 7600 of file ExprConstant.cpp.
References determineEndOffset(), EvaluateAsRValue(), clang::Expr::EvaluateKnownConstInt(), EvaluatePointer(), clang::CallExpr::getArg(), clang::CallExpr::getBuiltinCallee(), clang::Expr::getExprLoc(), clang::Expr::HasSideEffects(), ignorePointerCastsAndParens(), and clang::Expr::isGLValue().
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Definition at line 10245 of file ExprConstant.cpp.