Retains information about a function, method, or block that is currently being parsed. More...

#include "clang/Sema/ScopeInfo.h"

Inheritance diagram for clang::sema::FunctionScopeInfo:

[legend]

Classes
class	WeakObjectProfileTy
	Represents a simple identification of a weak object. More...

class	WeakUseTy
	Represents a single use of a weak object. More...

Public Types
enum	{ TryLocIsCXX , TryLocIsObjC , Unknown }

using	SwitchInfo = llvm::PointerIntPair< SwitchStmt *, 1, bool >
	A SwitchStmt, along with a flag indicating if its list of case statements is incomplete (because we dropped an invalid one while parsing).

using	WeakUseVector = SmallVector< WeakUseTy, 4 >
	Used to collect uses of a particular weak object in a function body.

using	WeakObjectUseMap = llvm::SmallDenseMap< WeakObjectProfileTy, WeakUseVector, 8, WeakObjectProfileTy::DenseMapInfo >
	Used to collect all uses of weak objects in a function body.

Public Member Functions
	FunctionScopeInfo (DiagnosticsEngine &Diag)

virtual	~FunctionScopeInfo ()

bool	hasUnrecoverableErrorOccurred () const
	Determine whether an unrecoverable error has occurred within this function.

template<typename ExprT >
void	recordUseOfWeak (const ExprT *E, bool IsRead=true)
	Record that a weak object was accessed.

void	recordUseOfWeak (const ObjCMessageExpr Msg, const ObjCPropertyDecl Prop)

void	markSafeWeakUse (const Expr *E)
	Record that a given expression is a "safe" access of a weak object (e.g.

const WeakObjectUseMap &	getWeakObjectUses () const

void	setHasBranchIntoScope ()

void	setHasBranchProtectedScope ()

void	setHasIndirectGoto ()

void	setHasMustTail ()

void	setHasDroppedStmt ()

void	setHasOMPDeclareReductionCombiner ()

void	setHasFallthroughStmt ()

void	setUsesFPIntrin ()

void	setHasCXXTry (SourceLocation TryLoc)

void	setHasObjCTry (SourceLocation TryLoc)

void	setHasSEHTry (SourceLocation TryLoc)

void	setHasVLA (SourceLocation VLALoc)

bool	NeedsScopeChecking () const

void	addBlock (const BlockDecl *BD)

void	addByrefBlockVar (VarDecl *VD)

bool	isCoroutine () const

void	setFirstCoroutineStmt (SourceLocation Loc, StringRef Keyword)

StringRef	getFirstCoroutineStmtKeyword () const

void	setNeedsCoroutineSuspends (bool value=true)

bool	hasInvalidCoroutineSuspends () const

void	setCoroutineSuspends (Stmt Initial, Stmt Final)

void	Clear ()
	Clear out the information in this function scope, making it suitable for reuse.

bool	isPlainFunction () const

Public Attributes
ScopeKind	Kind: 3
	What kind of scope we are describing.

bool	HasBranchProtectedScope: 1
	Whether this function contains a VLA, @try, try, C++ initializer, or anything else that can't be jumped past.

bool	HasBranchIntoScope: 1
	Whether this function contains any switches or direct gotos.

bool	HasIndirectGoto: 1
	Whether this function contains any indirect gotos.

bool	HasMustTail: 1
	Whether this function contains any statement marked with [[clang::musttail]].

bool	HasDroppedStmt: 1
	Whether a statement was dropped because it was invalid.

bool	HasOMPDeclareReductionCombiner: 1
	True if current scope is for OpenMP declare reduction combiner.

bool	HasFallthroughStmt: 1
	Whether there is a fallthrough statement in this function.

bool	UsesFPIntrin: 1
	Whether this function uses constrained floating point intrinsics.

bool	HasPotentialAvailabilityViolations: 1
	Whether we make reference to a declaration that could be unavailable.

bool	ObjCShouldCallSuper: 1
	A flag that is set when parsing a method that must call super's implementation, such as `-dealloc`, `-finalize`, or any method marked with `__attribute__((objc_requires_super))`.

bool	ObjCIsDesignatedInit: 1
	True when this is a method marked as a designated initializer.

bool	ObjCWarnForNoDesignatedInitChain: 1
	This starts true for a method marked as designated initializer and will be set to false if there is an invocation to a designated initializer of the super class.

bool	ObjCIsSecondaryInit: 1
	True when this is an initializer method not marked as a designated initializer within a class that has at least one initializer marked as a designated initializer.

bool	ObjCWarnForNoInitDelegation: 1
	This starts true for a secondary initializer method and will be set to false if there is an invocation of an initializer on 'self'.

bool	NeedsCoroutineSuspends: 1
	True only when this function has not already built, or attempted to build, the initial and final coroutine suspend points.

unsigned char	FirstCoroutineStmtKind: 2
	An enumeration representing the kind of the first coroutine statement in the function.

bool	FoundImmediateEscalatingExpression: 1
	Whether we found an immediate-escalating expression.

SourceLocation	FirstCoroutineStmtLoc
	First coroutine statement in the current function.

SourceLocation	FirstReturnLoc
	First 'return' statement in the current function.

SourceLocation	FirstCXXOrObjCTryLoc
	First C++ 'try' or ObjC @try statement in the current function.

enum clang::sema::FunctionScopeInfo:: { ... }	FirstTryType = Unknown

SourceLocation	FirstSEHTryLoc
	First SEH '__try' statement in the current function.

SourceLocation	FirstVLALoc
	First use of a VLA within the current function.

SmallVector< SwitchInfo, 8 >	SwitchStack
	SwitchStack - This is the current set of active switch statements in the block.

SmallVector< ReturnStmt *, 4 >	Returns
	The list of return statements that occur within the function or block, if there is any chance of applying the named return value optimization, or if we need to infer a return type.

VarDecl *	CoroutinePromise = nullptr
	The promise object for this coroutine, if any.

llvm::SmallMapVector< ParmVarDecl , Stmt , 4 >	CoroutineParameterMoves
	A mapping between the coroutine function parameters that were moved to the coroutine frame, and their move statements.

std::pair< Stmt , Stmt >	CoroutineSuspends
	The initial and final coroutine suspend points.

SmallVector< CompoundScopeInfo, 4 >	CompoundScopes
	The stack of currently active compound statement scopes in the function.

llvm::SmallPtrSet< const BlockDecl *, 1 >	Blocks
	The set of blocks that are introduced in this function.

llvm::TinyPtrVector< VarDecl * >	ByrefBlockVars
	The set of __block variables that are introduced in this function.

SmallVector< PossiblyUnreachableDiag, 4 >	PossiblyUnreachableDiags
	A list of PartialDiagnostics created but delayed within the current function scope.

llvm::SmallPtrSet< const ParmVarDecl *, 8 >	ModifiedNonNullParams
	A list of parameters which have the nonnull attribute and are modified in the function.

llvm::SmallVector< AddrLabelExpr *, 4 >	AddrLabels
	The set of GNU address of label extension "&&label".

Protected Types
enum	ScopeKind { SK_Function , SK_Block , SK_Lambda , SK_CapturedRegion }

Protected Member Functions
	FunctionScopeInfo (const FunctionScopeInfo &)=default

Detailed Description

Retains information about a function, method, or block that is currently being parsed.

Definition at line 104 of file ScopeInfo.h.

Member Typedef Documentation

◆ SwitchInfo

using clang::sema::FunctionScopeInfo::SwitchInfo = llvm::PointerIntPair<SwitchStmt*, 1, bool>

A SwitchStmt, along with a flag indicating if its list of case statements is incomplete (because we dropped an invalid one while parsing).

Definition at line 205 of file ScopeInfo.h.

◆ WeakObjectUseMap

using clang::sema::FunctionScopeInfo::WeakObjectUseMap = llvm::SmallDenseMap<WeakObjectProfileTy, WeakUseVector, 8, WeakObjectProfileTy::DenseMapInfo>

Used to collect all uses of weak objects in a function body.

Part of the implementation of -Wrepeated-use-of-weak.

Definition at line 378 of file ScopeInfo.h.

◆ WeakUseVector

using clang::sema::FunctionScopeInfo::WeakUseVector = SmallVector<WeakUseTy, 4>

Used to collect uses of a particular weak object in a function body.

Part of the implementation of -Wrepeated-use-of-weak.

Definition at line 373 of file ScopeInfo.h.

Member Enumeration Documentation

◆ anonymous enum

anonymous enum

Enumerator
TryLocIsCXX
TryLocIsObjC
Unknown

Definition at line 190 of file ScopeInfo.h.

◆ ScopeKind

enum clang::sema::FunctionScopeInfo::ScopeKind

protected

Enumerator
SK_Function
SK_Block
SK_Lambda
SK_CapturedRegion

Definition at line 106 of file ScopeInfo.h.

Constructor & Destructor Documentation

◆ FunctionScopeInfo() [1/2]

clang::sema::FunctionScopeInfo::FunctionScopeInfo ( const FunctionScopeInfo & )

protecteddefault

◆ FunctionScopeInfo() [2/2]

clang::sema::FunctionScopeInfo::FunctionScopeInfo ( DiagnosticsEngine & Diag )

inline

Definition at line 392 of file ScopeInfo.h.

◆ ~FunctionScopeInfo()

FunctionScopeInfo::~FunctionScopeInfo ( )

virtual

Definition at line 260 of file ScopeInfo.cpp.

Member Function Documentation

◆ addBlock()

void clang::sema::FunctionScopeInfo::addBlock ( const BlockDecl * BD )

inline

Definition at line 493 of file ScopeInfo.h.

References Blocks.

Referenced by clang::Sema::ActOnBlockStmtExpr().

◆ addByrefBlockVar()

void clang::sema::FunctionScopeInfo::addByrefBlockVar ( VarDecl * VD )

inline

Definition at line 498 of file ScopeInfo.h.

References ByrefBlockVars.

Referenced by clang::Sema::CheckCompleteVariableDeclaration().

◆ Clear()

void FunctionScopeInfo::Clear ( )

Clear out the information in this function scope, making it suitable for reuse.

Definition at line 25 of file ScopeInfo.cpp.

References AddrLabels, Blocks, ByrefBlockVars, CoroutineParameterMoves, CoroutinePromise, CoroutineSuspends, FirstCoroutineStmtLoc, FirstCXXOrObjCTryLoc, FirstReturnLoc, FirstSEHTryLoc, FirstVLALoc, FoundImmediateEscalatingExpression, HasBranchIntoScope, HasBranchProtectedScope, HasDroppedStmt, HasFallthroughStmt, HasIndirectGoto, HasOMPDeclareReductionCombiner, HasPotentialAvailabilityViolations, ModifiedNonNullParams, NeedsCoroutineSuspends, ObjCIsDesignatedInit, ObjCIsSecondaryInit, ObjCShouldCallSuper, ObjCWarnForNoDesignatedInitChain, ObjCWarnForNoInitDelegation, PossiblyUnreachableDiags, clang::DiagnosticErrorTrap::reset(), Returns, SwitchStack, and UsesFPIntrin.

◆ getFirstCoroutineStmtKeyword()

StringRef clang::sema::FunctionScopeInfo::getFirstCoroutineStmtKeyword ( ) const

inline

Definition at line 518 of file ScopeInfo.h.

References clang::sema::CoAwait, clang::sema::CoReturn, clang::sema::CoYield, FirstCoroutineStmtKind, FirstCoroutineStmtLoc, and clang::SourceLocation::isValid().

Referenced by clang::Sema::ActOnReturnStmt(), and checkReturnStmtInCoroutine().

◆ getWeakObjectUses()

const WeakObjectUseMap & clang::sema::FunctionScopeInfo::getWeakObjectUses ( ) const

inline

Definition at line 431 of file ScopeInfo.h.

Referenced by diagnoseRepeatedUseOfWeak().

◆ hasInvalidCoroutineSuspends()

bool clang::sema::FunctionScopeInfo::hasInvalidCoroutineSuspends ( ) const

inline

Definition at line 540 of file ScopeInfo.h.

References CoroutineSuspends, and NeedsCoroutineSuspends.

◆ hasUnrecoverableErrorOccurred()

bool clang::sema::FunctionScopeInfo::hasUnrecoverableErrorOccurred ( ) const

inline

Determine whether an unrecoverable error has occurred within this function.

Note that this may return false even if the function body is invalid, because the errors may be suppressed if they're caused by prior invalid declarations.

FIXME: Migrate the caller of this to use containsErrors() instead once it's ready.

Definition at line 412 of file ScopeInfo.h.

References clang::DiagnosticErrorTrap::hasUnrecoverableErrorOccurred().

◆ isCoroutine()

bool clang::sema::FunctionScopeInfo::isCoroutine ( ) const

inline

Definition at line 502 of file ScopeInfo.h.

References FirstCoroutineStmtLoc, and clang::SourceLocation::isInvalid().

Referenced by clang::Sema::ActOnFinishFunctionBody(), clang::Sema::ActOnReturnStmt(), CheckFallThroughForBody(), and clang::sema::AnalysisBasedWarnings::IssueWarnings().

◆ isPlainFunction()

bool clang::sema::FunctionScopeInfo::isPlainFunction ( ) const

inline

Definition at line 556 of file ScopeInfo.h.

References Kind, and SK_Function.

◆ markSafeWeakUse()

void FunctionScopeInfo::markSafeWeakUse ( const Expr * E )

Record that a given expression is a "safe" access of a weak object (e.g.

assigning it to a strong variable.)

Part of the implementation of -Wrepeated-use-of-weak.

Definition at line 161 of file ScopeInfo.cpp.

References E, clang::ObjCPropertyDecl::findPropertyDecl(), clang::PseudoObjectExpr::getSyntacticForm(), clang::Expr::IgnoreParenCasts(), and markSafeWeakUse().

Referenced by clang::Sema::CheckAssignmentOperands(), clang::Sema::checkUnsafeExprAssigns(), and markSafeWeakUse().

◆ NeedsScopeChecking()

bool clang::sema::FunctionScopeInfo::NeedsScopeChecking ( ) const

inline

Definition at line 487 of file ScopeInfo.h.

References HasBranchIntoScope, HasBranchProtectedScope, HasDroppedStmt, HasIndirectGoto, and HasMustTail.

Referenced by clang::Sema::ActOnFinishFunctionBody().

◆ recordUseOfWeak() [1/2]

template<typename ExprT >

void clang::sema::FunctionScopeInfo::recordUseOfWeak	(	const ExprT *	E,
		bool	IsRead = `true`
	)

inline

Record that a weak object was accessed.

Part of the implementation of -Wrepeated-use-of-weak.

Definition at line 1087 of file ScopeInfo.h.

References E.

Referenced by clang::Sema::BuildDeclRefExpr(), clang::SemaObjC::BuildInstanceMessage(), clang::SemaObjC::BuildIvarRefExpr(), and LookupMemberExpr().

◆ recordUseOfWeak() [2/2]

void FunctionScopeInfo::recordUseOfWeak	(	const ObjCMessageExpr *	Msg,
		const ObjCPropertyDecl *	Prop
	)

Definition at line 153 of file ScopeInfo.cpp.

References clang::ObjCMessageExpr::getInstanceReceiver(), and clang::ObjCMessageExpr::getNumArgs().

◆ setCoroutineSuspends()

void clang::sema::FunctionScopeInfo::setCoroutineSuspends	(	Stmt *	Initial,
		Stmt *	Final
	)

inline

Definition at line 544 of file ScopeInfo.h.

References CoroutineSuspends, and NeedsCoroutineSuspends.

◆ setFirstCoroutineStmt()

void clang::sema::FunctionScopeInfo::setFirstCoroutineStmt	(	SourceLocation	Loc,
		StringRef	Keyword
	)

inline

Definition at line 504 of file ScopeInfo.h.

References clang::sema::CoAwait, clang::sema::CoReturn, clang::sema::CoYield, FirstCoroutineStmtLoc, clang::SourceLocation::isInvalid(), and Loc.

◆ setHasBranchIntoScope()

void clang::sema::FunctionScopeInfo::setHasBranchIntoScope ( )

inline

Definition at line 435 of file ScopeInfo.h.

References HasBranchIntoScope.

◆ setHasBranchProtectedScope()

void clang::sema::FunctionScopeInfo::setHasBranchProtectedScope ( )

inline

Definition at line 439 of file ScopeInfo.h.

References HasBranchProtectedScope.

Referenced by clang::Sema::BuildCompoundLiteralExpr(), setHasCXXTry(), setHasObjCTry(), and setHasSEHTry().

◆ setHasCXXTry()

void clang::sema::FunctionScopeInfo::setHasCXXTry ( SourceLocation TryLoc )

inline

Definition at line 465 of file ScopeInfo.h.

References FirstCXXOrObjCTryLoc, FirstTryType, setHasBranchProtectedScope(), and TryLocIsCXX.

Referenced by clang::Sema::ActOnCXXTryBlock().

◆ setHasDroppedStmt()

void clang::sema::FunctionScopeInfo::setHasDroppedStmt ( )

inline

Definition at line 449 of file ScopeInfo.h.

References HasDroppedStmt.

◆ setHasFallthroughStmt()

void clang::sema::FunctionScopeInfo::setHasFallthroughStmt ( )

inline

Definition at line 457 of file ScopeInfo.h.

References HasFallthroughStmt.

◆ setHasIndirectGoto()

void clang::sema::FunctionScopeInfo::setHasIndirectGoto ( )

inline

Definition at line 443 of file ScopeInfo.h.

References HasIndirectGoto.

◆ setHasMustTail()

void clang::sema::FunctionScopeInfo::setHasMustTail ( )

inline

Definition at line 447 of file ScopeInfo.h.

References HasMustTail.

◆ setHasObjCTry()

void clang::sema::FunctionScopeInfo::setHasObjCTry ( SourceLocation TryLoc )

inline

Definition at line 471 of file ScopeInfo.h.

References FirstCXXOrObjCTryLoc, FirstTryType, setHasBranchProtectedScope(), and TryLocIsObjC.

Referenced by clang::SemaObjC::ActOnObjCAtTryStmt().

◆ setHasOMPDeclareReductionCombiner()

void clang::sema::FunctionScopeInfo::setHasOMPDeclareReductionCombiner ( )

inline

Definition at line 453 of file ScopeInfo.h.

References HasOMPDeclareReductionCombiner.

Referenced by clang::SemaOpenMP::ActOnOpenMPDeclareReductionCombinerStart().

◆ setHasSEHTry()

void clang::sema::FunctionScopeInfo::setHasSEHTry ( SourceLocation TryLoc )

inline

Definition at line 477 of file ScopeInfo.h.

References FirstSEHTryLoc, and setHasBranchProtectedScope().

Referenced by clang::Sema::ActOnSEHTryBlock().

◆ setHasVLA()

void clang::sema::FunctionScopeInfo::setHasVLA ( SourceLocation VLALoc )

inline

Definition at line 482 of file ScopeInfo.h.

References FirstVLALoc, and clang::SourceLocation::isInvalid().

◆ setNeedsCoroutineSuspends()

void clang::sema::FunctionScopeInfo::setNeedsCoroutineSuspends ( bool value = true )

inline

Definition at line 534 of file ScopeInfo.h.

References CoroutineSuspends, and NeedsCoroutineSuspends.

◆ setUsesFPIntrin()

void clang::sema::FunctionScopeInfo::setUsesFPIntrin ( )

inline

Definition at line 461 of file ScopeInfo.h.

References UsesFPIntrin.

Referenced by clang::Sema::ActOnAfterCompoundStatementLeadingPragmas().

Member Data Documentation

◆ AddrLabels

llvm::SmallVector<AddrLabelExpr *, 4> clang::sema::FunctionScopeInfo::AddrLabels

The set of GNU address of label extension "&&label".

Definition at line 246 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnAddrLabel(), and Clear().

◆ Blocks

llvm::SmallPtrSet<const BlockDecl *, 1> clang::sema::FunctionScopeInfo::Blocks

The set of blocks that are introduced in this function.

Definition at line 231 of file ScopeInfo.h.

Referenced by addBlock(), Clear(), and markEscapingByrefs().

◆ ByrefBlockVars

llvm::TinyPtrVector<VarDecl *> clang::sema::FunctionScopeInfo::ByrefBlockVars

The set of __block variables that are introduced in this function.

Definition at line 234 of file ScopeInfo.h.

Referenced by addByrefBlockVar(), Clear(), and markEscapingByrefs().

◆ CompoundScopes

SmallVector<CompoundScopeInfo, 4> clang::sema::FunctionScopeInfo::CompoundScopes

The stack of currently active compound statement scopes in the function.

Definition at line 228 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnCompoundStmt(), clang::SemaOpenMP::ActOnOpenMPDeclareMapperDirective(), clang::SemaOpenMP::ActOnOpenMPDeclareReductionDirectiveStart(), clang::Sema::getCurCompoundScope(), and clang::Sema::PopCompoundScope().

◆ CoroutineParameterMoves

llvm::SmallMapVector<ParmVarDecl *, Stmt *, 4> clang::sema::FunctionScopeInfo::CoroutineParameterMoves

A mapping between the coroutine function parameters that were moved to the coroutine frame, and their move statements.

Definition at line 221 of file ScopeInfo.h.

Referenced by Clear().

◆ CoroutinePromise

VarDecl* clang::sema::FunctionScopeInfo::CoroutinePromise = nullptr

The promise object for this coroutine, if any.

Definition at line 217 of file ScopeInfo.h.

Referenced by CheckFallThroughForBody(), and Clear().

◆ CoroutineSuspends

std::pair<Stmt *, Stmt *> clang::sema::FunctionScopeInfo::CoroutineSuspends

The initial and final coroutine suspend points.

Definition at line 224 of file ScopeInfo.h.

Referenced by Clear(), hasInvalidCoroutineSuspends(), setCoroutineSuspends(), and setNeedsCoroutineSuspends().

◆ FirstCoroutineStmtKind

unsigned char clang::sema::FunctionScopeInfo::FirstCoroutineStmtKind

An enumeration representing the kind of the first coroutine statement in the function.

One of co_return, co_await, or co_yield.

Definition at line 176 of file ScopeInfo.h.

Referenced by getFirstCoroutineStmtKeyword().

◆ FirstCoroutineStmtLoc

SourceLocation clang::sema::FunctionScopeInfo::FirstCoroutineStmtLoc

First coroutine statement in the current function.

(ex co_return, co_await, co_yield)

Definition at line 183 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnReturnStmt(), checkReturnStmtInCoroutine(), Clear(), getFirstCoroutineStmtKeyword(), isCoroutine(), and setFirstCoroutineStmt().

◆ FirstCXXOrObjCTryLoc

SourceLocation clang::sema::FunctionScopeInfo::FirstCXXOrObjCTryLoc

First C++ 'try' or ObjC @try statement in the current function.

Definition at line 189 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnSEHTryBlock(), Clear(), setHasCXXTry(), and setHasObjCTry().

◆ FirstReturnLoc

SourceLocation clang::sema::FunctionScopeInfo::FirstReturnLoc

First 'return' statement in the current function.

Definition at line 186 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnReturnStmt(), checkReturnStmtInCoroutine(), and Clear().

◆ FirstSEHTryLoc

SourceLocation clang::sema::FunctionScopeInfo::FirstSEHTryLoc

First SEH '__try' statement in the current function.

Definition at line 193 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnCXXTryBlock(), clang::SemaObjC::ActOnObjCAtTryStmt(), Clear(), and setHasSEHTry().

◆

enum { ... } clang::sema::FunctionScopeInfo::FirstTryType

Referenced by clang::Sema::ActOnSEHTryBlock(), setHasCXXTry(), and setHasObjCTry().

◆ FirstVLALoc

SourceLocation clang::sema::FunctionScopeInfo::FirstVLALoc

First use of a VLA within the current function.

Definition at line 196 of file ScopeInfo.h.

Referenced by Clear(), and setHasVLA().

◆ FoundImmediateEscalatingExpression

bool clang::sema::FunctionScopeInfo::FoundImmediateEscalatingExpression

Whether we found an immediate-escalating expression.

Definition at line 179 of file ScopeInfo.h.

Referenced by clang::Sema::CheckImmediateEscalatingFunctionDefinition(), and Clear().

◆ HasBranchIntoScope

bool clang::sema::FunctionScopeInfo::HasBranchIntoScope

Whether this function contains any switches or direct gotos.

Definition at line 122 of file ScopeInfo.h.

Referenced by Clear(), NeedsScopeChecking(), and setHasBranchIntoScope().

◆ HasBranchProtectedScope

bool clang::sema::FunctionScopeInfo::HasBranchProtectedScope

Whether this function contains a VLA, @try, try, C++ initializer, or anything else that can't be jumped past.

Definition at line 119 of file ScopeInfo.h.

Referenced by Clear(), NeedsScopeChecking(), and setHasBranchProtectedScope().

◆ HasDroppedStmt

bool clang::sema::FunctionScopeInfo::HasDroppedStmt

Whether a statement was dropped because it was invalid.

Definition at line 132 of file ScopeInfo.h.

Referenced by Clear(), NeedsScopeChecking(), and setHasDroppedStmt().

◆ HasFallthroughStmt

bool clang::sema::FunctionScopeInfo::HasFallthroughStmt

Whether there is a fallthrough statement in this function.

Definition at line 138 of file ScopeInfo.h.

Referenced by Clear(), clang::sema::AnalysisBasedWarnings::IssueWarnings(), and setHasFallthroughStmt().

◆ HasIndirectGoto

bool clang::sema::FunctionScopeInfo::HasIndirectGoto

Whether this function contains any indirect gotos.

Definition at line 125 of file ScopeInfo.h.

Referenced by Clear(), NeedsScopeChecking(), and setHasIndirectGoto().

◆ HasMustTail

bool clang::sema::FunctionScopeInfo::HasMustTail

Whether this function contains any statement marked with [[clang::musttail]].

Definition at line 129 of file ScopeInfo.h.

Referenced by NeedsScopeChecking(), and setHasMustTail().

◆ HasOMPDeclareReductionCombiner

bool clang::sema::FunctionScopeInfo::HasOMPDeclareReductionCombiner

True if current scope is for OpenMP declare reduction combiner.

Definition at line 135 of file ScopeInfo.h.

Referenced by Clear(), clang::Sema::DiagnoseUseOfDecl(), and setHasOMPDeclareReductionCombiner().

◆ HasPotentialAvailabilityViolations

bool clang::sema::FunctionScopeInfo::HasPotentialAvailabilityViolations

Whether we make reference to a declaration that could be unavailable.

Definition at line 145 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnFinishFunctionBody(), and Clear().

◆ Kind

ScopeKind clang::sema::FunctionScopeInfo::Kind

What kind of scope we are describing.

Definition at line 115 of file ScopeInfo.h.

Referenced by clang::sema::BlockScopeInfo::BlockScopeInfo(), clang::sema::CapturedRegionScopeInfo::CapturedRegionScopeInfo(), clang::sema::CapturingScopeInfo::classof(), clang::sema::BlockScopeInfo::classof(), clang::sema::CapturedRegionScopeInfo::classof(), clang::sema::LambdaScopeInfo::classof(), isPlainFunction(), and clang::sema::LambdaScopeInfo::LambdaScopeInfo().

◆ ModifiedNonNullParams

llvm::SmallPtrSet<const ParmVarDecl *, 8> clang::sema::FunctionScopeInfo::ModifiedNonNullParams

A list of parameters which have the nonnull attribute and are modified in the function.

Definition at line 243 of file ScopeInfo.h.

Referenced by Clear().

◆ NeedsCoroutineSuspends

bool clang::sema::FunctionScopeInfo::NeedsCoroutineSuspends

True only when this function has not already built, or attempted to build, the initial and final coroutine suspend points.

Definition at line 171 of file ScopeInfo.h.

Referenced by Clear(), hasInvalidCoroutineSuspends(), setCoroutineSuspends(), and setNeedsCoroutineSuspends().

◆ ObjCIsDesignatedInit

bool clang::sema::FunctionScopeInfo::ObjCIsDesignatedInit

True when this is a method marked as a designated initializer.

Definition at line 153 of file ScopeInfo.h.

Referenced by clang::SemaObjC::ActOnStartOfObjCMethodDef(), clang::SemaObjC::BuildInstanceMessage(), and Clear().

◆ ObjCIsSecondaryInit

bool clang::sema::FunctionScopeInfo::ObjCIsSecondaryInit

True when this is an initializer method not marked as a designated initializer within a class that has at least one initializer marked as a designated initializer.

Definition at line 163 of file ScopeInfo.h.

Referenced by clang::SemaObjC::ActOnStartOfObjCMethodDef(), clang::SemaObjC::BuildInstanceMessage(), and Clear().

◆ ObjCShouldCallSuper

bool clang::sema::FunctionScopeInfo::ObjCShouldCallSuper

A flag that is set when parsing a method that must call super's implementation, such as -dealloc, -finalize, or any method marked with __attribute__((objc_requires_super)).

Definition at line 150 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnFinishFunctionBody(), clang::SemaObjC::ActOnStartOfObjCMethodDef(), clang::SemaObjC::ActOnSuperMessage(), and Clear().

◆ ObjCWarnForNoDesignatedInitChain

bool clang::sema::FunctionScopeInfo::ObjCWarnForNoDesignatedInitChain

This starts true for a method marked as designated initializer and will be set to false if there is an invocation to a designated initializer of the super class.

Definition at line 158 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnFinishFunctionBody(), clang::SemaObjC::ActOnStartOfObjCMethodDef(), clang::SemaObjC::BuildInstanceMessage(), and Clear().

◆ ObjCWarnForNoInitDelegation

bool clang::sema::FunctionScopeInfo::ObjCWarnForNoInitDelegation

This starts true for a secondary initializer method and will be set to false if there is an invocation of an initializer on 'self'.

Definition at line 167 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnFinishFunctionBody(), clang::SemaObjC::ActOnStartOfObjCMethodDef(), clang::SemaObjC::BuildInstanceMessage(), and Clear().

◆ PossiblyUnreachableDiags

SmallVector<PossiblyUnreachableDiag, 4> clang::sema::FunctionScopeInfo::PossiblyUnreachableDiags

A list of PartialDiagnostics created but delayed within the current function scope.

These diagnostics are vetted for reachability prior to being emitted.

Definition at line 239 of file ScopeInfo.h.

Referenced by Clear(), flushDiagnostics(), and clang::sema::AnalysisBasedWarnings::IssueWarnings().

◆ Returns

SmallVector<ReturnStmt*, 4> clang::sema::FunctionScopeInfo::Returns

The list of return statements that occur within the function or block, if there is any chance of applying the named return value optimization, or if we need to infer a return type.

Definition at line 214 of file ScopeInfo.h.

Referenced by Clear(), and clang::Sema::deduceClosureReturnType().

◆ SwitchStack

SmallVector<SwitchInfo, 8> clang::sema::FunctionScopeInfo::SwitchStack

SwitchStack - This is the current set of active switch statements in the block.

Definition at line 209 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnCaseExpr(), clang::Sema::ActOnCaseStmt(), clang::Sema::ActOnDefaultStmt(), clang::Sema::ActOnFinishSwitchStmt(), clang::Sema::ActOnStartOfSwitchStmt(), AddKeywordsToConsumer(), AddOrdinaryNameResults(), Clear(), and clang::SemaCodeCompletion::CodeCompleteCase().

◆ UsesFPIntrin

bool clang::sema::FunctionScopeInfo::UsesFPIntrin

Whether this function uses constrained floating point intrinsics.

Definition at line 141 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnFinishFunctionBody(), Clear(), and setUsesFPIntrin().

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

include/clang/Sema/ScopeInfo.h
lib/Sema/ScopeInfo.cpp

Classes

Public Types

Public Member Functions

Public Attributes

Protected Types

Protected Member Functions

Detailed Description

Member Typedef Documentation

◆ SwitchInfo

◆ WeakObjectUseMap

◆ WeakUseVector

Member Enumeration Documentation

◆ anonymous enum

◆ ScopeKind

Constructor & Destructor Documentation

◆ FunctionScopeInfo() [1/2]

◆ FunctionScopeInfo() [2/2]

◆ ~FunctionScopeInfo()

Member Function Documentation

◆ addBlock()

◆ addByrefBlockVar()

◆ Clear()

◆ getFirstCoroutineStmtKeyword()

◆ getWeakObjectUses()

◆ hasInvalidCoroutineSuspends()

◆ hasUnrecoverableErrorOccurred()

◆ isCoroutine()

◆ isPlainFunction()

◆ markSafeWeakUse()

◆ NeedsScopeChecking()

◆ recordUseOfWeak() [1/2]

◆ recordUseOfWeak() [2/2]

◆ setCoroutineSuspends()

◆ setFirstCoroutineStmt()

◆ setHasBranchIntoScope()

◆ setHasBranchProtectedScope()

◆ setHasCXXTry()

◆ setHasDroppedStmt()

◆ setHasFallthroughStmt()

◆ setHasIndirectGoto()

◆ setHasMustTail()

◆ setHasObjCTry()

◆ setHasOMPDeclareReductionCombiner()

◆ setHasSEHTry()

◆ setHasVLA()

◆ setNeedsCoroutineSuspends()

◆ setUsesFPIntrin()

Member Data Documentation

◆ AddrLabels

◆ Blocks

◆ ByrefBlockVars

◆ CompoundScopes

◆ CoroutineParameterMoves

◆ CoroutinePromise

◆ CoroutineSuspends

◆ FirstCoroutineStmtKind

◆ FirstCoroutineStmtLoc

◆ FirstCXXOrObjCTryLoc

◆ FirstReturnLoc

◆ FirstSEHTryLoc

◆

◆ FirstVLALoc

◆ FoundImmediateEscalatingExpression

◆ HasBranchIntoScope

◆ HasBranchProtectedScope

◆ HasDroppedStmt

◆ HasFallthroughStmt

◆ HasIndirectGoto

◆ HasMustTail

◆ HasOMPDeclareReductionCombiner

◆ HasPotentialAvailabilityViolations

◆ Kind

◆ ModifiedNonNullParams

◆ NeedsCoroutineSuspends

◆ ObjCIsDesignatedInit

◆ ObjCIsSecondaryInit

◆ ObjCShouldCallSuper

◆ ObjCWarnForNoDesignatedInitChain

◆ ObjCWarnForNoInitDelegation

◆ PossiblyUnreachableDiags