clang::ExprWithCleanups Class Reference

#include <ExprCXX.h>

Inheritance diagram for clang::ExprWithCleanups:

Collaboration diagram for clang::ExprWithCleanups:

List of all members.

Public Types
typedef BlockDecl *	CleanupObject
Public Member Functions
ArrayRef< CleanupObject >	getObjects () const
unsigned	getNumObjects () const
CleanupObject	getObject (unsigned i) const
Expr *	getSubExpr ()
const Expr *	getSubExpr () const
void	setSubExpr (Expr *E)
SourceRange	getSourceRange () const LLVM_READONLY
child_range	children ()
Static Public Member Functions
static ExprWithCleanups *	Create (ASTContext &C, EmptyShell empty, unsigned numObjects)
static ExprWithCleanups *	Create (ASTContext &C, Expr *subexpr, ArrayRef< CleanupObject > objects)
static bool	classof (const Stmt *T)
static bool	classof (const ExprWithCleanups *)
Friends
class	ASTStmtReader

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Detailed Description

Represents an expression --- generally a full-expression --- which introduces cleanups to be run at the end of the sub-expression's evaluation. The most common source of expression-introduced cleanups is temporary objects in C++, but several other kinds of expressions can create cleanups, including basically every call in ARC that returns an Objective-C pointer.

This expression also tracks whether the sub-expression contains a potentially-evaluated block literal. The lifetime of a block literal is the extent of the enclosing scope.

Definition at line 2698 of file ExprCXX.h.

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Member Typedef Documentation

typedef BlockDecl* clang::ExprWithCleanups::CleanupObject

The type of objects that are kept in the cleanup. It's useful to remember the set of blocks; we could also remember the set of temporaries, but there's currently no need.

Definition at line 2704 of file ExprCXX.h.

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Member Function Documentation

child_range clang::ExprWithCleanups::children

(

)

[inline]

Reimplemented from clang::Stmt.

Definition at line 2756 of file ExprCXX.h.

static bool clang::ExprWithCleanups::classof

(

const Stmt *

T

)

[inline, static]

Reimplemented from clang::Expr.

Definition at line 2750 of file ExprCXX.h.

References clang::Stmt::getStmtClass().

static bool clang::ExprWithCleanups::classof

(

const ExprWithCleanups *

)

[inline, static]

Definition at line 2753 of file ExprCXX.h.

ExprWithCleanups * ExprWithCleanups::Create	(	ASTContext &	C,
		EmptyShell	empty,
		unsigned	numObjects
	)		[static]

Definition at line 973 of file ExprCXX.cpp.

References clang::ASTContext::Allocate().

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

ExprWithCleanups * ExprWithCleanups::Create	(	ASTContext &	C,
		Expr *	subexpr,
		ArrayRef< CleanupObject >	objects
	)		[static]

Definition at line 960 of file ExprCXX.cpp.

References clang::ASTContext::Allocate().

unsigned clang::ExprWithCleanups::getNumObjects

(

)

const [inline]

Definition at line 2731 of file ExprCXX.h.

References clang::Stmt::ExprWithCleanupsBits.

Referenced by clang::CodeGen::CodeGenFunction::enterFullExpression(), clang::CodeGen::CodeGenFunction::enterNonTrivialFullExpression(), getObject(), and getObjects().

CleanupObject clang::ExprWithCleanups::getObject

(

unsigned

i

)

const [inline]

Definition at line 2733 of file ExprCXX.h.

References getNumObjects(), and getObjects().

ArrayRef<CleanupObject> clang::ExprWithCleanups::getObjects

(

)

const [inline]

Definition at line 2727 of file ExprCXX.h.

References getNumObjects().

Referenced by clang::CodeGen::CodeGenFunction::enterNonTrivialFullExpression(), and getObject().

SourceRange clang::ExprWithCleanups::getSourceRange

(

)

const [inline]

SourceLocation tokens are not useful in isolation - they are low level value objects created/interpreted by SourceManager. We assume AST clients will have a pointer to the respective SourceManager.

Reimplemented from clang::Stmt.

Definition at line 2745 of file ExprCXX.h.

References clang::Stmt::getSourceRange().

Expr* clang::ExprWithCleanups::getSubExpr

(

)

[inline]

Definition at line 2738 of file ExprCXX.h.

Referenced by clang::CodeGen::CodeGenFunction::EmitLValue(), clang::CodeGen::CodeGenFunction::MaybeEmitStdInitializerListCleanup(), and maybeRebuildARCConsumingStmt().

const Expr* clang::ExprWithCleanups::getSubExpr

(

)

const [inline]

Definition at line 2739 of file ExprCXX.h.

void clang::ExprWithCleanups::setSubExpr

(

Expr *

E

)

[inline]

setSubExpr - As with any mutator of the AST, be very careful when modifying an existing AST to preserve its invariants.

Definition at line 2743 of file ExprCXX.h.

Referenced by maybeRebuildARCConsumingStmt().

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Friends And Related Function Documentation

friend class ASTStmtReader [friend]

Reimplemented from clang::Stmt.

Definition at line 2718 of file ExprCXX.h.

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

• ExprCXX.h
• ExprCXX.cpp