clang  9.0.0svn
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clang::ImplicitConversionSequence Class Reference

ImplicitConversionSequence - Represents an implicit conversion sequence, which may be a standard conversion sequence (C++ 13.3.3.1.1), user-defined conversion sequence (C++ 13.3.3.1.2), or an ellipsis conversion sequence (C++ 13.3.3.1.3). More...

#include "clang/Sema/Overload.h"

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Public Types

enum  Kind {
  StandardConversion = 0, UserDefinedConversion, AmbiguousConversion, EllipsisConversion,
  BadConversion
}
 Kind - The kind of implicit conversion sequence. More...
 
enum  CompareKind { Better = -1, Indistinguishable = 0, Worse = 1 }
 

Public Member Functions

 ImplicitConversionSequence ()
 
 ImplicitConversionSequence (const ImplicitConversionSequence &Other)
 
ImplicitConversionSequenceoperator= (const ImplicitConversionSequence &Other)
 
 ~ImplicitConversionSequence ()
 
Kind getKind () const
 
unsigned getKindRank () const
 Return a ranking of the implicit conversion sequence kind, where smaller ranks represent better conversion sequences. More...
 
bool isBad () const
 
bool isStandard () const
 
bool isEllipsis () const
 
bool isAmbiguous () const
 
bool isUserDefined () const
 
bool isFailure () const
 
bool isInitialized () const
 Determines whether this conversion sequence has been initialized. More...
 
void setBad (BadConversionSequence::FailureKind Failure, Expr *FromExpr, QualType ToType)
 Sets this sequence as a bad conversion for an explicit argument. More...
 
void setBad (BadConversionSequence::FailureKind Failure, QualType FromType, QualType ToType)
 Sets this sequence as a bad conversion for an implicit argument. More...
 
void setStandard ()
 
void setEllipsis ()
 
void setUserDefined ()
 
void setAmbiguous ()
 
void setAsIdentityConversion (QualType T)
 
bool isStdInitializerListElement () const
 Whether the target is really a std::initializer_list, and the sequence only represents the worst element conversion. More...
 
void setStdInitializerListElement (bool V=true)
 
void DiagnoseAmbiguousConversion (Sema &S, SourceLocation CaretLoc, const PartialDiagnostic &PDiag) const
 Diagnoses an ambiguous conversion. More...
 
void dump () const
 dump - Print this implicit conversion sequence to standard error. More...
 

Public Attributes

union {
   StandardConversionSequence   Standard
 When ConversionKind == StandardConversion, provides the details of the standard conversion sequence. More...
 
   UserDefinedConversionSequence   UserDefined
 When ConversionKind == UserDefinedConversion, provides the details of the user-defined conversion sequence. More...
 
   AmbiguousConversionSequence   Ambiguous
 When ConversionKind == AmbiguousConversion, provides the details of the ambiguous conversion. More...
 
   BadConversionSequence   Bad
 When ConversionKind == BadConversion, provides the details of the bad conversion. More...
 
}; 
 

Detailed Description

ImplicitConversionSequence - Represents an implicit conversion sequence, which may be a standard conversion sequence (C++ 13.3.3.1.1), user-defined conversion sequence (C++ 13.3.3.1.2), or an ellipsis conversion sequence (C++ 13.3.3.1.3).

Definition at line 486 of file Overload.h.

Member Enumeration Documentation

◆ CompareKind

Enumerator
Better 
Indistinguishable 
Worse 

Definition at line 656 of file Overload.h.

◆ Kind

Kind - The kind of implicit conversion sequence.

BadConversion specifies that there is no conversion from the source type to the target type. AmbiguousConversion represents the unique ambiguous conversion (C++0x [over.best.ics]p10).

Enumerator
StandardConversion 
UserDefinedConversion 
AmbiguousConversion 
EllipsisConversion 
BadConversion 

Definition at line 492 of file Overload.h.

Constructor & Destructor Documentation

◆ ImplicitConversionSequence() [1/2]

clang::ImplicitConversionSequence::ImplicitConversionSequence ( )
inline

Definition at line 540 of file Overload.h.

◆ ImplicitConversionSequence() [2/2]

clang::ImplicitConversionSequence::ImplicitConversionSequence ( const ImplicitConversionSequence Other)
inline

Definition at line 545 of file Overload.h.

References Ambiguous, Bad, Standard, Uninitialized, and UserDefined.

◆ ~ImplicitConversionSequence()

clang::ImplicitConversionSequence::~ImplicitConversionSequence ( )
inline

Definition at line 565 of file Overload.h.

Member Function Documentation

◆ DiagnoseAmbiguousConversion()

void ImplicitConversionSequence::DiagnoseAmbiguousConversion ( Sema S,
SourceLocation  CaretLoc,
const PartialDiagnostic PDiag 
) const

Diagnoses an ambiguous conversion.

The partial diagnostic is the "lead" diagnostic; it will be given two arguments, the source and target types of the conversion.

Definition at line 9654 of file SemaOverload.cpp.

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

◆ dump()

void ImplicitConversionSequence::dump ( ) const

dump - Print this implicit conversion sequence to standard error.

Useful for debugging overloading issues.

Definition at line 524 of file SemaOverload.cpp.

◆ getKind()

Kind clang::ImplicitConversionSequence::getKind ( ) const
inline

◆ getKindRank()

unsigned clang::ImplicitConversionSequence::getKindRank ( ) const
inline

Return a ranking of the implicit conversion sequence kind, where smaller ranks represent better conversion sequences.

In particular, this routine gives user-defined conversion sequences and ambiguous conversion sequences the same rank, per C++ [over.best.ics]p10.

Definition at line 581 of file Overload.h.

References getKind().

Referenced by CompareImplicitConversionSequences().

◆ isAmbiguous()

bool clang::ImplicitConversionSequence::isAmbiguous ( ) const
inline

Definition at line 603 of file Overload.h.

References getKind().

◆ isBad()

bool clang::ImplicitConversionSequence::isBad ( ) const
inline

◆ isEllipsis()

bool clang::ImplicitConversionSequence::isEllipsis ( ) const
inline

Definition at line 602 of file Overload.h.

References getKind().

◆ isFailure()

bool clang::ImplicitConversionSequence::isFailure ( ) const
inline

Definition at line 605 of file Overload.h.

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

◆ isInitialized()

bool clang::ImplicitConversionSequence::isInitialized ( ) const
inline

Determines whether this conversion sequence has been initialized.

Most operations should never need to query uninitialized conversions and should assert as above.

Definition at line 610 of file Overload.h.

References Uninitialized.

◆ isStandard()

bool clang::ImplicitConversionSequence::isStandard ( ) const
inline

◆ isStdInitializerListElement()

bool clang::ImplicitConversionSequence::isStdInitializerListElement ( ) const
inline

Whether the target is really a std::initializer_list, and the sequence only represents the worst element conversion.

Definition at line 645 of file Overload.h.

Referenced by CompareImplicitConversionSequences().

◆ isUserDefined()

bool clang::ImplicitConversionSequence::isUserDefined ( ) const
inline

◆ operator=()

ImplicitConversionSequence& clang::ImplicitConversionSequence::operator= ( const ImplicitConversionSequence Other)
inline

Definition at line 559 of file Overload.h.

◆ setAmbiguous()

void clang::ImplicitConversionSequence::setAmbiguous ( )
inline

Definition at line 630 of file Overload.h.

Referenced by FindConversionForRefInit(), and TryUserDefinedConversion().

◆ setAsIdentityConversion()

void clang::ImplicitConversionSequence::setAsIdentityConversion ( QualType  T)
inline

Definition at line 636 of file Overload.h.

◆ setBad() [1/2]

void clang::ImplicitConversionSequence::setBad ( BadConversionSequence::FailureKind  Failure,
Expr FromExpr,
QualType  ToType 
)
inline

Sets this sequence as a bad conversion for an explicit argument.

Definition at line 613 of file Overload.h.

Referenced by TryImplicitConversion(), TryListConversion(), TryObjectArgumentInitialization(), TryReferenceInit(), and TryUserDefinedConversion().

◆ setBad() [2/2]

void clang::ImplicitConversionSequence::setBad ( BadConversionSequence::FailureKind  Failure,
QualType  FromType,
QualType  ToType 
)
inline

Sets this sequence as a bad conversion for an implicit argument.

Definition at line 620 of file Overload.h.

◆ setEllipsis()

void clang::ImplicitConversionSequence::setEllipsis ( )
inline

Definition at line 627 of file Overload.h.

◆ setStandard()

void clang::ImplicitConversionSequence::setStandard ( )
inline

◆ setStdInitializerListElement()

void clang::ImplicitConversionSequence::setStdInitializerListElement ( bool  V = true)
inline

Definition at line 649 of file Overload.h.

Referenced by TryListConversion().

◆ setUserDefined()

void clang::ImplicitConversionSequence::setUserDefined ( )
inline

Member Data Documentation

◆ @232

union { ... }

◆ Ambiguous

AmbiguousConversionSequence clang::ImplicitConversionSequence::Ambiguous

When ConversionKind == AmbiguousConversion, provides the details of the ambiguous conversion.

Definition at line 533 of file Overload.h.

Referenced by FindConversionForRefInit(), ImplicitConversionSequence(), and TryUserDefinedConversion().

◆ Bad

BadConversionSequence clang::ImplicitConversionSequence::Bad

When ConversionKind == BadConversion, provides the details of the bad conversion.

Definition at line 537 of file Overload.h.

Referenced by ImplicitConversionSequence().

◆ Standard

StandardConversionSequence clang::ImplicitConversionSequence::Standard

◆ UserDefined

UserDefinedConversionSequence clang::ImplicitConversionSequence::UserDefined

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