clang  3.7.0
Classes | Public Types | Public Member Functions | Public Attributes | Protected Types | List of all members
clang::sema::FunctionScopeInfo Class Reference

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

#include <ScopeInfo.h>

Inheritance diagram for clang::sema::FunctionScopeInfo:
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Classes

class  WeakObjectProfileTy
 
class  WeakUseTy
 

Public Types

typedef SmallVector< WeakUseTy, 4 > WeakUseVector
 
typedef llvm::SmallDenseMap
< WeakObjectProfileTy,
WeakUseVector,
8, WeakObjectProfileTy::DenseMapInfo
WeakObjectUseMap
 

Public Member Functions

template<typename ExprT >
void recordUseOfWeak (const ExprT *E, bool IsRead=true)
 
void recordUseOfWeak (const ObjCMessageExpr *Msg, const ObjCPropertyDecl *Prop)
 
void markSafeWeakUse (const Expr *E)
 
const WeakObjectUseMapgetWeakObjectUses () const
 
void setHasBranchIntoScope ()
 
void setHasBranchProtectedScope ()
 
void setHasIndirectGoto ()
 
void setHasDroppedStmt ()
 
void setHasCXXTry (SourceLocation TryLoc)
 
void setHasSEHTry (SourceLocation TryLoc)
 
bool NeedsScopeChecking () const
 
 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
 What kind of scope we are describing. More...
 
bool HasBranchProtectedScope
 Whether this function contains a VLA, @try, try, C++ initializer, or anything else that can't be jumped past. More...
 
bool HasBranchIntoScope
 Whether this function contains any switches or direct gotos. More...
 
bool HasIndirectGoto
 Whether this function contains any indirect gotos. More...
 
bool HasDroppedStmt
 Whether a statement was dropped because it was invalid. More...
 
bool ObjCShouldCallSuper
 
bool ObjCIsDesignatedInit
 True when this is a method marked as a designated initializer. More...
 
bool ObjCWarnForNoDesignatedInitChain
 
bool ObjCIsSecondaryInit
 
bool ObjCWarnForNoInitDelegation
 
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
 
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...
 
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. These diagnostics are vetted for reachability prior to being emitted. 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 }
 

Detailed Description

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

Definition at line 80 of file ScopeInfo.h.

Member Typedef Documentation

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

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

Definition at line 286 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 279 of file ScopeInfo.h.

Member Enumeration Documentation

Enumerator
SK_Function 
SK_Block 
SK_Lambda 
SK_CapturedRegion 

Definition at line 82 of file ScopeInfo.h.

Constructor & Destructor Documentation

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

Definition at line 346 of file ScopeInfo.h.

FunctionScopeInfo::~FunctionScopeInfo ( )
virtual

Definition at line 235 of file ScopeInfo.cpp.

Member Function Documentation

void FunctionScopeInfo::Clear ( )
const WeakObjectUseMap& clang::sema::FunctionScopeInfo::getWeakObjectUses ( ) const
inline

Definition at line 310 of file ScopeInfo.h.

Referenced by diagnoseRepeatedUseOfWeak().

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 157 of file ScopeInfo.cpp.

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

bool clang::sema::FunctionScopeInfo::NeedsScopeChecking ( ) const
inline
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 826 of file ScopeInfo.h.

Referenced by clang::Sema::BuildInstanceMessage(), and clang::Sema::recordUseOfEvaluatedWeak().

void FunctionScopeInfo::recordUseOfWeak ( const ObjCMessageExpr Msg,
const ObjCPropertyDecl Prop 
)
void clang::sema::FunctionScopeInfo::setHasBranchIntoScope ( )
inline

Definition at line 314 of file ScopeInfo.h.

References HasBranchIntoScope.

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

Definition at line 330 of file ScopeInfo.h.

References FirstCXXTryLoc, and setHasBranchProtectedScope().

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

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

Definition at line 326 of file ScopeInfo.h.

References HasDroppedStmt.

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

Definition at line 322 of file ScopeInfo.h.

References HasIndirectGoto.

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

Definition at line 335 of file ScopeInfo.h.

References FirstSEHTryLoc, and setHasBranchProtectedScope().

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

Member Data Documentation

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

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

Definition at line 147 of file ScopeInfo.h.

Referenced by clang::Sema::PopCompoundScope(), and clang::Sema::PushCompoundScope().

DiagnosticErrorTrap clang::sema::FunctionScopeInfo::ErrorTrap

Used to determine if errors occurred in this function or block.

Definition at line 134 of file ScopeInfo.h.

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

SourceLocation clang::sema::FunctionScopeInfo::FirstCXXTryLoc

First C++ 'try' statement in the current function.

Definition at line 128 of file ScopeInfo.h.

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

SourceLocation clang::sema::FunctionScopeInfo::FirstSEHTryLoc

First SEH '__try' statement in the current function.

Definition at line 131 of file ScopeInfo.h.

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

bool clang::sema::FunctionScopeInfo::HasBranchIntoScope

Whether this function contains any switches or direct gotos.

Definition at line 99 of file ScopeInfo.h.

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

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 96 of file ScopeInfo.h.

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

bool clang::sema::FunctionScopeInfo::HasDroppedStmt

Whether a statement was dropped because it was invalid.

Definition at line 105 of file ScopeInfo.h.

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

bool clang::sema::FunctionScopeInfo::HasIndirectGoto

Whether this function contains any indirect gotos.

Definition at line 102 of file ScopeInfo.h.

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

ScopeKind clang::sema::FunctionScopeInfo::Kind
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 156 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 113 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnStartOfObjCMethodDef(), clang::Sema::BuildInstanceMessage(), 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 122 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnStartOfObjCMethodDef(), clang::Sema::BuildInstanceMessage(), 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 110 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnStartOfObjCMethodDef(), clang::Sema::ActOnSuperMessage(), 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 117 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnStartOfObjCMethodDef(), clang::Sema::BuildInstanceMessage(), 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 125 of file ScopeInfo.h.

Referenced by clang::Sema::ActOnStartOfObjCMethodDef(), clang::Sema::BuildInstanceMessage(), 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 152 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 143 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 138 of file ScopeInfo.h.

Referenced by AddKeywordsToConsumer(), AddOrdinaryNameResults(), Clear(), and handleFallThroughAttr().


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