clang
6.0.0
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Retains information about a function, method, or block that is currently being parsed. More...
#include "clang/Sema/ScopeInfo.h"
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 | |
typedef SmallVector< WeakUseTy, 4 > | WeakUseVector |
Used to collect uses of a particular weak object in a function body. More... | |
typedef llvm::SmallDenseMap< WeakObjectProfileTy, WeakUseVector, 8, WeakObjectProfileTy::DenseMapInfo > | WeakObjectUseMap |
Used to collect all uses of weak objects in a function body. More... | |
Public Member Functions | |
template<typename ExprT > | |
void | recordUseOfWeak (const ExprT *E, bool IsRead=true) |
Record that a weak object was accessed. More... | |
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. More... | |
const WeakObjectUseMap & | getWeakObjectUses () const |
void | setHasBranchIntoScope () |
void | setHasBranchProtectedScope () |
void | setHasIndirectGoto () |
void | setHasDroppedStmt () |
void | setHasOMPDeclareReductionCombiner () |
void | setHasFallthroughStmt () |
void | setHasCXXTry (SourceLocation TryLoc) |
void | setHasSEHTry (SourceLocation TryLoc) |
bool | NeedsScopeChecking () const |
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) |
FunctionScopeInfo (DiagnosticsEngine &Diag) | |
virtual | ~FunctionScopeInfo () |
void | Clear () |
Clear out the information in this function scope, making it suitable for reuse. More... | |
Public Attributes | |
ScopeKind | Kind: 3 |
What kind of scope we are describing. More... | |
bool | HasBranchProtectedScope: 1 |
Whether this function contains a VLA, @try, try, C++ initializer, or anything else that can't be jumped past. More... | |
bool | HasBranchIntoScope: 1 |
Whether this function contains any switches or direct gotos. More... | |
bool | HasIndirectGoto: 1 |
Whether this function contains any indirect gotos. More... | |
bool | HasDroppedStmt: 1 |
Whether a statement was dropped because it was invalid. More... | |
bool | HasOMPDeclareReductionCombiner: 1 |
True if current scope is for OpenMP declare reduction combiner. More... | |
bool | HasFallthroughStmt: 1 |
Whether there is a fallthrough statement in this function. More... | |
bool | HasPotentialAvailabilityViolations: 1 |
Whether we make reference to a declaration that could be unavailable. More... | |
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)). More... | |
bool | ObjCIsDesignatedInit: 1 |
True when this is a method marked as a designated initializer. More... | |
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. More... | |
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. More... | |
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'. More... | |
bool | NeedsCoroutineSuspends: 1 |
True only when this function has not already built, or attempted to build, the initial and final coroutine suspend points. More... | |
unsigned char | FirstCoroutineStmtKind: 2 |
An enumeration represeting the kind of the first coroutine statement in the function. More... | |
SourceLocation | FirstCoroutineStmtLoc |
First coroutine statement in the current function. More... | |
SourceLocation | FirstReturnLoc |
First 'return' statement in the current function. More... | |
SourceLocation | FirstCXXTryLoc |
First C++ 'try' statement in the current function. More... | |
SourceLocation | FirstSEHTryLoc |
First SEH '__try' statement in the current function. More... | |
DiagnosticErrorTrap | ErrorTrap |
Used to determine if errors occurred in this function or block. More... | |
SmallVector< SwitchStmt *, 8 > | SwitchStack |
SwitchStack - This is the current set of active switch statements in the block. More... | |
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. More... | |
VarDecl * | CoroutinePromise = nullptr |
The promise object for this coroutine, if any. More... | |
std::pair< Stmt *, Stmt * > | CoroutineSuspends |
The initial and final coroutine suspend points. More... | |
SmallVector< CompoundScopeInfo, 4 > | CompoundScopes |
The stack of currently active compound stamement scopes in the function. More... | |
SmallVector< PossiblyUnreachableDiag, 4 > | PossiblyUnreachableDiags |
A list of PartialDiagnostics created but delayed within the current function scope. More... | |
llvm::SmallPtrSet< const ParmVarDecl *, 8 > | ModifiedNonNullParams |
A list of parameters which have the nonnull attribute and are modified in the function. More... | |
Protected Types | |
enum | ScopeKind { SK_Function, SK_Block, SK_Lambda, SK_CapturedRegion } |
Protected Member Functions | |
FunctionScopeInfo (const FunctionScopeInfo &)=default | |
Retains information about a function, method, or block that is currently being parsed.
Definition at line 82 of file ScopeInfo.h.
typedef llvm::SmallDenseMap<WeakObjectProfileTy, WeakUseVector, 8, WeakObjectProfileTy::DenseMapInfo> clang::sema::FunctionScopeInfo::WeakObjectUseMap |
Used to collect all uses of weak objects in a function body.
Part of the implementation of -Wrepeated-use-of-weak.
Definition at line 320 of file ScopeInfo.h.
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 313 of file ScopeInfo.h.
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protected |
Enumerator | |
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SK_Function | |
SK_Block | |
SK_Lambda | |
SK_CapturedRegion |
Definition at line 84 of file ScopeInfo.h.
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protecteddefault |
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inline |
Definition at line 433 of file ScopeInfo.h.
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virtual |
Definition at line 248 of file ScopeInfo.cpp.
void FunctionScopeInfo::Clear | ( | ) |
Clear out the information in this function scope, making it suitable for reuse.
Definition at line 26 of file ScopeInfo.cpp.
References CoroutinePromise, CoroutineSuspends, ErrorTrap, FirstCoroutineStmtLoc, FirstCXXTryLoc, FirstReturnLoc, FirstSEHTryLoc, HasBranchIntoScope, HasBranchProtectedScope, HasDroppedStmt, HasFallthroughStmt, HasIndirectGoto, HasOMPDeclareReductionCombiner, HasPotentialAvailabilityViolations, ModifiedNonNullParams, NeedsCoroutineSuspends, ObjCIsDesignatedInit, ObjCIsSecondaryInit, ObjCShouldCallSuper, ObjCWarnForNoDesignatedInitChain, ObjCWarnForNoInitDelegation, PossiblyUnreachableDiags, clang::DiagnosticErrorTrap::reset(), Returns, and SwitchStack.
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Definition at line 403 of file ScopeInfo.h.
References clang::SourceLocation::isValid().
Referenced by clang::Sema::CheckCompletedCoroutineBody().
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Definition at line 347 of file ScopeInfo.h.
Referenced by diagnoseRepeatedUseOfWeak().
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Definition at line 421 of file ScopeInfo.h.
Referenced by clang::CoroutineStmtBuilder::buildParameterMoves().
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Definition at line 391 of file ScopeInfo.h.
References clang::SourceLocation::isInvalid().
Referenced by clang::Sema::CheckCompletedCoroutineBody(), CheckFallThroughForBody(), and clang::sema::AnalysisBasedWarnings::IssueWarnings().
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 170 of file ScopeInfo.cpp.
References clang::ObjCPropertyDecl::findPropertyDecl(), and clang::Expr::IgnoreParenCasts().
Referenced by LookupMethodInReceiverType().
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Definition at line 385 of file ScopeInfo.h.
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Record that a weak object was accessed.
Part of the implementation of -Wrepeated-use-of-weak.
Definition at line 958 of file ScopeInfo.h.
void FunctionScopeInfo::recordUseOfWeak | ( | const ObjCMessageExpr * | Msg, |
const ObjCPropertyDecl * | Prop | ||
) |
Definition at line 162 of file ScopeInfo.cpp.
References clang::ObjCMessageExpr::getInstanceReceiver(), and clang::ObjCMessageExpr::getNumArgs().
Definition at line 425 of file ScopeInfo.h.
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Definition at line 393 of file ScopeInfo.h.
References clang::SourceLocation::isInvalid().
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Definition at line 351 of file ScopeInfo.h.
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Definition at line 355 of file ScopeInfo.h.
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Definition at line 375 of file ScopeInfo.h.
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Definition at line 363 of file ScopeInfo.h.
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inline |
Definition at line 371 of file ScopeInfo.h.
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Definition at line 359 of file ScopeInfo.h.
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Definition at line 367 of file ScopeInfo.h.
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Definition at line 380 of file ScopeInfo.h.
Referenced by clang::Sema::ActOnSEHTryBlock().
Definition at line 415 of file ScopeInfo.h.
SmallVector<CompoundScopeInfo, 4> clang::sema::FunctionScopeInfo::CompoundScopes |
The stack of currently active compound stamement scopes in the function.
Definition at line 180 of file ScopeInfo.h.
Referenced by clang::Sema::PopCompoundScope(), and clang::Sema::PushCompoundScope().
VarDecl* clang::sema::FunctionScopeInfo::CoroutinePromise = nullptr |
The promise object for this coroutine, if any.
Definition at line 173 of file ScopeInfo.h.
Referenced by clang::CoroutineStmtBuilder::buildParameterMoves(), clang::Sema::CheckCompletedCoroutineBody(), CheckFallThroughForBody(), and Clear().
The initial and final coroutine suspend points.
Definition at line 176 of file ScopeInfo.h.
Referenced by clang::CoroutineStmtBuilder::buildParameterMoves(), and Clear().
DiagnosticErrorTrap clang::sema::FunctionScopeInfo::ErrorTrap |
Used to determine if errors occurred in this function or block.
Definition at line 161 of file ScopeInfo.h.
Referenced by Clear(), and clang::Sema::hasAnyUnrecoverableErrorsInThisFunction().
unsigned char clang::sema::FunctionScopeInfo::FirstCoroutineStmtKind |
An enumeration represeting the kind of the first coroutine statement in the function.
One of co_return, co_await, or co_yield.
Definition at line 145 of file ScopeInfo.h.
SourceLocation clang::sema::FunctionScopeInfo::FirstCoroutineStmtLoc |
First coroutine statement in the current function.
(ex co_return, co_await, co_yield)
Definition at line 149 of file ScopeInfo.h.
Referenced by clang::Sema::CheckCompletedCoroutineBody(), and Clear().
SourceLocation clang::sema::FunctionScopeInfo::FirstCXXTryLoc |
First C++ 'try' statement in the current function.
Definition at line 155 of file ScopeInfo.h.
Referenced by clang::Sema::ActOnSEHTryBlock(), and Clear().
SourceLocation clang::sema::FunctionScopeInfo::FirstReturnLoc |
First 'return' statement in the current function.
Definition at line 152 of file ScopeInfo.h.
Referenced by clang::Sema::CheckCompletedCoroutineBody(), and Clear().
SourceLocation clang::sema::FunctionScopeInfo::FirstSEHTryLoc |
First SEH '__try' statement in the current function.
Definition at line 158 of file ScopeInfo.h.
Referenced by clang::Sema::ActOnCXXTryBlock(), and Clear().
bool clang::sema::FunctionScopeInfo::HasBranchIntoScope |
Whether this function contains any switches or direct gotos.
Definition at line 101 of file ScopeInfo.h.
Referenced by Clear().
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 98 of file ScopeInfo.h.
Referenced by Clear().
bool clang::sema::FunctionScopeInfo::HasDroppedStmt |
Whether a statement was dropped because it was invalid.
Definition at line 107 of file ScopeInfo.h.
Referenced by Clear().
bool clang::sema::FunctionScopeInfo::HasFallthroughStmt |
Whether there is a fallthrough statement in this function.
Definition at line 113 of file ScopeInfo.h.
Referenced by Clear(), and clang::sema::AnalysisBasedWarnings::IssueWarnings().
bool clang::sema::FunctionScopeInfo::HasIndirectGoto |
Whether this function contains any indirect gotos.
Definition at line 104 of file ScopeInfo.h.
Referenced by Clear().
bool clang::sema::FunctionScopeInfo::HasOMPDeclareReductionCombiner |
True if current scope is for OpenMP declare reduction combiner.
Definition at line 110 of file ScopeInfo.h.
Referenced by Clear().
bool clang::sema::FunctionScopeInfo::HasPotentialAvailabilityViolations |
Whether we make reference to a declaration that could be unavailable.
Definition at line 117 of file ScopeInfo.h.
Referenced by Clear().
ScopeKind clang::sema::FunctionScopeInfo::Kind |
What kind of scope we are describing.
Definition at line 94 of file ScopeInfo.h.
Referenced by clang::sema::CapturingScopeInfo::classof(), clang::sema::BlockScopeInfo::classof(), clang::sema::CapturedRegionScopeInfo::classof(), and clang::sema::LambdaScopeInfo::classof().
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 189 of file ScopeInfo.h.
Referenced by Clear().
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 141 of file ScopeInfo.h.
Referenced by Clear().
bool clang::sema::FunctionScopeInfo::ObjCIsDesignatedInit |
True when this is a method marked as a designated initializer.
Definition at line 125 of file ScopeInfo.h.
Referenced by clang::Sema::ActOnStartOfObjCMethodDef(), and Clear().
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 134 of file ScopeInfo.h.
Referenced by clang::Sema::ActOnStartOfObjCMethodDef(), and Clear().
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 122 of file ScopeInfo.h.
Referenced by clang::Sema::ActOnStartOfObjCMethodDef(), and Clear().
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 129 of file ScopeInfo.h.
Referenced by clang::Sema::ActOnStartOfObjCMethodDef(), and Clear().
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 137 of file ScopeInfo.h.
Referenced by clang::Sema::ActOnStartOfObjCMethodDef(), and Clear().
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 185 of file ScopeInfo.h.
Referenced by Clear(), flushDiagnostics(), clang::sema::AnalysisBasedWarnings::IssueWarnings(), and clang::Sema::PopFunctionScopeInfo().
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 170 of file ScopeInfo.h.
Referenced by Clear(), clang::Sema::computeNRVO(), and clang::Sema::deduceClosureReturnType().
SmallVector<SwitchStmt*, 8> clang::sema::FunctionScopeInfo::SwitchStack |
SwitchStack - This is the current set of active switch statements in the block.
Definition at line 165 of file ScopeInfo.h.
Referenced by Clear().