Frame storing local variables. More...

#include "/home/buildbot/as-worker-4/publish-doxygen-docs/llvm-project/clang/lib/AST/Interp/InterpFrame.h"

Inheritance diagram for clang::interp::InterpFrame:

Public Member Functions
	InterpFrame (InterpState &S, const Function Func, InterpFrame Caller, CodePtr RetPC)
	Creates a new frame for a method call.

	InterpFrame (InterpState &S, const Function *Func, CodePtr RetPC)
	Creates a new frame with the values that make sense.

	~InterpFrame ()
	Destroys the frame, killing all live pointers to stack slots.

void	destroy (unsigned Idx)
	Invokes the destructors for a scope.

void	popArgs ()
	Pops the arguments off the stack.

void	describe (llvm::raw_ostream &OS) override
	Describes the frame with arguments for diagnostic purposes.

Frame *	getCaller () const override
	Returns the parent frame object.

SourceLocation	getCallLocation () const override
	Returns the location of the call to the frame.

const FunctionDecl *	getCallee () const override
	Returns the caller.

const Function *	getFunction () const
	Returns the current function.

size_t	getFrameOffset () const
	Returns the offset on the stack at which the frame starts.

template<typename T >
const T &	getLocal (unsigned Offset) const
	Returns the value of a local variable.

template<typename T >
void	setLocal (unsigned Offset, const T &Value)
	Mutates a local variable.

Pointer	getLocalPointer (unsigned Offset) const
	Returns a pointer to a local variables.

template<typename T >
const T &	getParam (unsigned Offset) const
	Returns the value of an argument.

template<typename T >
void	setParam (unsigned Offset, const T &Value)
	Mutates a local copy of a parameter.

Pointer	getParamPointer (unsigned Offset)
	Returns a pointer to an argument - lazily creates a block.

const Pointer &	getThis () const
	Returns the 'this' pointer.

const Pointer &	getRVOPtr () const
	Returns the RVO pointer, if the Function has one.

bool	isRoot () const
	Checks if the frame is a root frame - return should quit the interpreter.

CodePtr	getPC () const
	Returns the PC of the frame's code start.

CodePtr	getRetPC () const
	Returns the return address of the frame.

virtual SourceInfo	getSource (CodePtr PC) const
	Map a location to a source.

const Expr *	getExpr (CodePtr PC) const

SourceLocation	getLocation (CodePtr PC) const

unsigned	getDepth () const

Public Member Functions inherited from clang::interp::Frame
virtual	~Frame ()

virtual void	describe (llvm::raw_ostream &OS)=0
	Generates a human-readable description of the call site.

virtual Frame *	getCaller () const =0
	Returns a pointer to the caller frame.

virtual SourceLocation	getCallLocation () const =0
	Returns the location of the call site.

virtual const FunctionDecl *	getCallee () const =0
	Returns the called function's declaration.

Public Attributes
InterpFrame *	Caller
	The frame of the previous function.

Detailed Description

Frame storing local variables.

Definition at line 28 of file InterpFrame.h.

Constructor & Destructor Documentation

◆ InterpFrame() [1/2]

InterpFrame::InterpFrame	(	InterpState &	S,
		const Function *	Func,
		InterpFrame *	Caller,
		CodePtr	RetPC
	)

Creates a new frame for a method call.

Definition at line 24 of file InterpFrame.cpp.

References clang::interp::Function::getFrameSize(), clang::interp::Block::invokeCtor(), clang::interp::Scope::locals(), and clang::interp::Function::scopes().

◆ InterpFrame() [2/2]

InterpFrame::InterpFrame	(	InterpState &	S,
		const Function *	Func,
		CodePtr	RetPC
	)

Creates a new frame with the values that make sense.

I.e., the caller is the current frame of S, the This() pointer is the current Pointer on the top of S's stack, and the RVO pointer is before that.

Definition at line 53 of file InterpFrame.cpp.

References clang::interp::Function::hasRVO(), and clang::interp::Function::hasThisPointer().

◆ ~InterpFrame()

InterpFrame::~InterpFrame ( )

Destroys the frame, killing all live pointers to stack slots.

Definition at line 72 of file InterpFrame.cpp.

References clang::interp::InterpState::deallocate().

Member Function Documentation

◆ describe()

void InterpFrame::describe ( llvm::raw_ostream & OS )

overridevirtual

Describes the frame with arguments for diagnostic purposes.

Implements clang::interp::Frame.

Definition at line 147 of file InterpFrame.cpp.

References clang::interp::align(), clang::interp::Context::classify(), clang::interp::InterpState::Ctx, getCallee(), clang::interp::InterpState::getCtx(), clang::FunctionDecl::getNumParams(), clang::FunctionDecl::getParamDecl(), clang::ASTContext::getRecordType(), clang::ValueDecl::getType(), clang::interp::Function::hasRVO(), clang::interp::Function::hasThisPointer(), clang::interp::primSize(), print(), clang::interp::PT_Ptr, and TYPE_SWITCH.

◆ destroy()

void InterpFrame::destroy ( unsigned Idx )

Invokes the destructors for a scope.

Definition at line 77 of file InterpFrame.cpp.

References clang::interp::InterpState::deallocate(), clang::interp::Function::getScope(), and clang::interp::Scope::locals().

◆ getCallee()

const FunctionDecl * InterpFrame::getCallee ( ) const

overridevirtual

Returns the caller.

Implements clang::interp::Frame.

Definition at line 185 of file InterpFrame.cpp.

References clang::interp::Function::getDecl().

Referenced by describe().

◆ getCaller()

Frame * InterpFrame::getCaller ( ) const

overridevirtual

Returns the parent frame object.

Implements clang::interp::Frame.

Definition at line 173 of file InterpFrame.cpp.

References Caller, and clang::interp::InterpState::getSplitFrame().

◆ getCallLocation()

SourceLocation InterpFrame::getCallLocation ( ) const

overridevirtual

Returns the location of the call to the frame.

Implements clang::interp::Frame.

Definition at line 179 of file InterpFrame.cpp.

References Caller, and clang::interp::SourceMapper::getLocation().

◆ getDepth()

unsigned clang::interp::InterpFrame::getDepth ( ) const

inline

Definition at line 122 of file InterpFrame.h.

Referenced by clang::interp::InterpState::getCallStackDepth().

◆ getExpr()

const Expr * InterpFrame::getExpr ( CodePtr PC ) const

Definition at line 219 of file InterpFrame.cpp.

References clang::interp::SourceMapper::getExpr().

◆ getFrameOffset()

size_t clang::interp::InterpFrame::getFrameOffset ( ) const

inline

Returns the offset on the stack at which the frame starts.

Definition at line 68 of file InterpFrame.h.

◆ getFunction()

const Function * clang::interp::InterpFrame::getFunction ( ) const

inline

Returns the current function.

Definition at line 65 of file InterpFrame.h.

◆ getLocal()

template<typename T >

const T & clang::interp::InterpFrame::getLocal ( unsigned Offset ) const

inline

Returns the value of a local variable.

Definition at line 71 of file InterpFrame.h.

References Offset.

◆ getLocalPointer()

Pointer InterpFrame::getLocalPointer ( unsigned Offset ) const

Returns a pointer to a local variables.

Definition at line 189 of file InterpFrame.cpp.

References Offset.

◆ getLocation()

SourceLocation InterpFrame::getLocation ( CodePtr PC ) const

Definition at line 223 of file InterpFrame.cpp.

References clang::interp::SourceMapper::getLocation().

◆ getParam()

template<typename T >

const T & clang::interp::InterpFrame::getParam ( unsigned Offset ) const

inline

Returns the value of an argument.

Definition at line 85 of file InterpFrame.h.

References clang::interp::Pointer::deref(), and Offset.

◆ getParamPointer()

Pointer InterpFrame::getParamPointer ( unsigned Offset )

Returns a pointer to an argument - lazily creates a block.

Definition at line 194 of file InterpFrame.cpp.

References clang::interp::Function::getParamDescriptor(), and TYPE_SWITCH.

Referenced by setParam().

◆ getPC()

CodePtr clang::interp::InterpFrame::getPC ( ) const

inline

Returns the PC of the frame's code start.

Definition at line 112 of file InterpFrame.h.

References clang::interp::Function::getCodeBegin().

◆ getRetPC()

CodePtr clang::interp::InterpFrame::getRetPC ( ) const

inline

Returns the return address of the frame.

Definition at line 115 of file InterpFrame.h.

◆ getRVOPtr()

const Pointer & clang::interp::InterpFrame::getRVOPtr ( ) const

inline

Returns the RVO pointer, if the Function has one.

Definition at line 106 of file InterpFrame.h.

◆ getSource()

SourceInfo InterpFrame::getSource ( CodePtr PC ) const

virtual

Map a location to a source.

Definition at line 215 of file InterpFrame.cpp.

References clang::interp::InterpState::getSource().

◆ getThis()

const Pointer & clang::interp::InterpFrame::getThis ( ) const

inline

Returns the 'this' pointer.

Definition at line 103 of file InterpFrame.h.

◆ isRoot()

bool clang::interp::InterpFrame::isRoot ( ) const

inline

Checks if the frame is a root frame - return should quit the interpreter.

Definition at line 109 of file InterpFrame.h.

◆ popArgs()

void InterpFrame::popArgs ( )

Pops the arguments off the stack.

Definition at line 83 of file InterpFrame.cpp.

References clang::interp::Function::args_reverse(), clang::interp::InterpStack::discard(), clang::interp::InterpState::Stk, and TYPE_SWITCH.

◆ setLocal()

template<typename T >

void clang::interp::InterpFrame::setLocal	(	unsigned	Offset,
		const T &	Value
	)

inline

Mutates a local variable.

Definition at line 76 of file InterpFrame.h.

References clang::interp::InlineDescriptor::IsInitialized, and Offset.

◆ setParam()

template<typename T >

void clang::interp::InterpFrame::setParam	(	unsigned	Offset,
		const T &	Value
	)

inline

Mutates a local copy of a parameter.

Definition at line 95 of file InterpFrame.h.

References clang::interp::Pointer::deref(), getParamPointer(), and Offset.

Member Data Documentation

◆ Caller

InterpFrame* clang::interp::InterpFrame::Caller

The frame of the previous function.

Definition at line 31 of file InterpFrame.h.

Referenced by getCaller(), getCallLocation(), clang::interp::InterpState::getCurrentFrame(), and clang::interp::InterpState::~InterpState().

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

lib/AST/Interp/InterpFrame.h
lib/AST/Interp/InterpFrame.cpp

Public Member Functions

Public Attributes

Detailed Description

Constructor & Destructor Documentation

◆ InterpFrame() [1/2]

◆ InterpFrame() [2/2]

◆ ~InterpFrame()

Member Function Documentation

◆ describe()

◆ destroy()

◆ getCallee()

◆ getCaller()

◆ getCallLocation()

◆ getDepth()

◆ getExpr()

◆ getFrameOffset()

◆ getFunction()

◆ getLocal()

◆ getLocalPointer()

◆ getLocation()

◆ getParam()

◆ getParamPointer()

◆ getPC()

◆ getRetPC()

◆ getRVOPtr()

◆ getSource()

◆ getThis()

◆ isRoot()

◆ popArgs()

◆ setLocal()

◆ setParam()

Member Data Documentation

◆ Caller