clang::SemaBase::SemaDiagnosticBuilder Class Reference

A generic diagnostic builder for errors which may or may not be deferred. More...

#include "clang/Sema/SemaBase.h"

Public Types
enum	Kind { K_Nop , K_Immediate , K_ImmediateWithCallStack , K_Deferred }
using	DeferredDiagnosticsType = llvm::DenseMap< CanonicalDeclPtr< const FunctionDecl >, std::vector< PartialDiagnosticAt > >

Public Member Functions
	SemaDiagnosticBuilder (Kind K, SourceLocation Loc, unsigned DiagID, const FunctionDecl *Fn, Sema &S)
	SemaDiagnosticBuilder (SemaDiagnosticBuilder &&D)
	SemaDiagnosticBuilder (const SemaDiagnosticBuilder &)=default
SemaDiagnosticBuilder &	operator= (const SemaDiagnosticBuilder &)=delete
SemaDiagnosticBuilder &	operator= (SemaDiagnosticBuilder &&)=delete
	~SemaDiagnosticBuilder ()
bool	isImmediate () const
	operator bool () const
	Convertible to bool: True if we immediately emitted an error, false if we didn't emit an error or we created a deferred error.
template<typename T , typename = std::enable_if_t<!std::is_lvalue_reference<T>::value>>
const SemaDiagnosticBuilder &	operator<< (T &&V) const
void	AddFixItHint (const FixItHint &Hint) const
	operator ExprResult () const
	operator StmtResult () const
	operator TypeResult () const
	operator DeclResult () const
	operator MemInitResult () const

Friends
template<typename T >
const SemaDiagnosticBuilder &	operator<< (const SemaDiagnosticBuilder &Diag, const T &Value)
const SemaDiagnosticBuilder &	operator<< (const SemaDiagnosticBuilder &Diag, const PartialDiagnostic &PD)
ExprResult	ExprError (const SemaDiagnosticBuilder &)
StmtResult	StmtError (const SemaDiagnosticBuilder &)

Detailed Description

A generic diagnostic builder for errors which may or may not be deferred.

In CUDA, there exist constructs (e.g. variable-length arrays, try/catch) which are not allowed to appear inside device functions and are allowed to appear in host device functions only if the host+device function is never codegen'ed.

To handle this, we use the notion of "deferred diagnostics", where we attach a diagnostic to a FunctionDecl that's emitted iff it's codegen'ed.

This class lets you emit either a regular diagnostic, a deferred diagnostic, or no diagnostic at all, according to an argument you pass to its constructor, thus simplifying the process of creating these "maybe deferred" diagnostics.

Definition at line 110 of file SemaBase.h.

Member Typedef Documentation

DeferredDiagnosticsType

using clang::SemaBase::SemaDiagnosticBuilder::DeferredDiagnosticsType = llvm::DenseMap<CanonicalDeclPtr<const FunctionDecl>, std::vector<PartialDiagnosticAt> >

Definition at line 194 of file SemaBase.h.

Member Enumeration Documentation

Kind

enum clang::SemaBase::SemaDiagnosticBuilder::Kind

Enumerator
K_Nop	Emit no diagnostics.
K_Immediate	Emit the diagnostic immediately (i.e., behave like Sema::Diag()).
K_ImmediateWithCallStack	Emit the diagnostic immediately, and, if it's a warning or error, also emit a call stack showing how this function can be reached by an a priori known-emitted function.
K_Deferred	Create a deferred diagnostic, which is emitted only if the function it's attached to is codegen'ed. Also emit a call stack as with K_ImmediateWithCallStack.

Definition at line 112 of file SemaBase.h.

Constructor & Destructor Documentation

SemaDiagnosticBuilder() [1/3]

clang::SemaBase::SemaDiagnosticBuilder::SemaDiagnosticBuilder	(	Kind	K,
		SourceLocation	Loc,
		unsigned	DiagID,
		const FunctionDecl *	Fn,
		Sema &	S
	)

SemaDiagnosticBuilder() [2/3]

clang::SemaBase::SemaDiagnosticBuilder::SemaDiagnosticBuilder

(

SemaDiagnosticBuilder &&

D

)

SemaDiagnosticBuilder() [3/3]

clang::SemaBase::SemaDiagnosticBuilder::SemaDiagnosticBuilder ( const SemaDiagnosticBuilder &  )

default

~SemaDiagnosticBuilder()

clang::SemaBase::SemaDiagnosticBuilder::~SemaDiagnosticBuilder

(

)

Member Function Documentation

AddFixItHint()

void clang::SemaBase::SemaDiagnosticBuilder::AddFixItHint

(

const FixItHint &

Hint

)

const

Definition at line 46 of file SemaBase.cpp.

isImmediate()

bool clang::SemaBase::SemaDiagnosticBuilder::isImmediate ( ) const

inline

Definition at line 139 of file SemaBase.h.

Referenced by clang::SemaBase::Diag(), and operator bool().

operator bool()

clang::SemaBase::SemaDiagnosticBuilder::operator bool ( ) const

inline

Convertible to bool: True if we immediately emitted an error, false if we didn't emit an error or we created a deferred error.

Example usage:

if (SemaDiagnosticBuilder(...) << foo << bar) return ExprError();

But see DiagIfDeviceCode() and DiagIfHostCode() – you probably want to use these instead of creating a SemaDiagnosticBuilder yourself.

Definition at line 151 of file SemaBase.h.

References isImmediate().

operator DeclResult()

clang::SemaBase::SemaDiagnosticBuilder::operator DeclResult ( ) const

inline

Definition at line 191 of file SemaBase.h.

operator ExprResult()

clang::SemaBase::SemaDiagnosticBuilder::operator ExprResult ( ) const

inline

Definition at line 188 of file SemaBase.h.

References ExprError.

operator MemInitResult()

clang::SemaBase::SemaDiagnosticBuilder::operator MemInitResult ( ) const

inline

Definition at line 192 of file SemaBase.h.

operator StmtResult()

clang::SemaBase::SemaDiagnosticBuilder::operator StmtResult ( ) const

inline

Definition at line 189 of file SemaBase.h.

References StmtError.

operator TypeResult()

clang::SemaBase::SemaDiagnosticBuilder::operator TypeResult ( ) const

inline

Definition at line 190 of file SemaBase.h.

References clang::TypeError().

operator<<()

template<typename T , typename = std::enable_if_t<!std::is_lvalue_reference<T>::value>>

const SemaDiagnosticBuilder & clang::SemaBase::SemaDiagnosticBuilder::operator<< ( T &&  V ) const

inline

Definition at line 169 of file SemaBase.h.

References V.

operator=() [1/2]

SemaDiagnosticBuilder & clang::SemaBase::SemaDiagnosticBuilder::operator= ( const SemaDiagnosticBuilder &  )

delete

operator=() [2/2]

SemaDiagnosticBuilder & clang::SemaBase::SemaDiagnosticBuilder::operator= ( SemaDiagnosticBuilder &&  )

delete

Friends And Related Function Documentation

ExprError

ExprResult ExprError ( const SemaDiagnosticBuilder &  )

friend

Definition at line 182 of file SemaBase.h.

Referenced by operator ExprResult().

operator<< [1/2]

const SemaDiagnosticBuilder & operator<< ( const SemaDiagnosticBuilder &  Diag, const PartialDiagnostic &  PD  )

friend

Definition at line 36 of file SemaBase.cpp.

operator<< [2/2]

template<typename T >

const SemaDiagnosticBuilder & operator<< ( const SemaDiagnosticBuilder &  Diag, const T &  Value  )

friend

Definition at line 154 of file SemaBase.h.

StmtError

StmtResult StmtError ( const SemaDiagnosticBuilder &  )

friend

Definition at line 185 of file SemaBase.h.

Referenced by operator StmtResult().

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

• include/clang/Sema/SemaBase.h
• lib/Sema/SemaBase.cpp