Inheritance diagram for P4::ComputeWriteSet:

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Public Member Functions
	ComputeWriteSet (AllDefinitions *allDefinitions)

bool	preorder (const IR::ArrayIndex *expression) override

bool	preorder (const IR::AssignmentStatement *statement) override

bool	preorder (const IR::BlockStatement *statement) override

bool	preorder (const IR::DefaultExpression *expression) override

bool	preorder (const IR::EmptyStatement *statement) override

bool	preorder (const IR::ExitStatement *statement) override

bool	preorder (const IR::Expression *expression) override
	For expressions we maintain the write-set in the writes std::map.

bool	preorder (const IR::Function *function) override

bool	preorder (const IR::HeaderStackExpression *expression) override

bool	preorder (const IR::IfStatement *statement) override

bool	preorder (const IR::InvalidHeader *expression) override

bool	preorder (const IR::InvalidHeaderUnion *expression) override

bool	preorder (const IR::ListExpression *expression) override

bool	preorder (const IR::Literal *expression) override

bool	preorder (const IR::Member *expression) override

bool	preorder (const IR::MethodCallExpression *expression) override

bool	preorder (const IR::MethodCallStatement *statement) override

bool	preorder (const IR::Mux *expression) override

bool	preorder (const IR::Operation_Binary *expression) override

bool	preorder (const IR::Operation_Unary *expression) override

bool	preorder (const IR::P4Action *action) override

bool	preorder (const IR::P4Control *control) override

bool	preorder (const IR::P4ListExpression *expression) override

bool	preorder (const IR::P4Parser *parser) override

bool	preorder (const IR::P4Table *table) override

bool	preorder (const IR::PathExpression *expression) override

bool	preorder (const IR::ReturnStatement *statement) override

bool	preorder (const IR::SelectExpression *expression) override

bool	preorder (const IR::Slice *expression) override

bool	preorder (const IR::StructExpression *expression) override

bool	preorder (const IR::SwitchStatement *statement) override

bool	preorder (const IR::TypeNameExpression *expression) override

const LocationSet *	writtenLocations (const IR::Expression *expression)

Public Member Functions inherited from IHasDbPrint
void	print () const

Protected Member Functions
	ComputeWriteSet (const ComputeWriteSet source, ProgramPoint context, Definitions definitions)

void	dbprint (std::ostream &out) const override

void	end_apply () override

void	enterScope (const IR::ParameterList parameters, const IR::IndexedVector< IR::Declaration > locals, ProgramPoint startPoint, bool clear=true)

void	exitScope (const IR::ParameterList parameters, const IR::IndexedVector< IR::Declaration > locals)

void	expressionWrites (const IR::Expression expression, const LocationSet loc)

Definitions *	getDefinitionsAfter (const IR::ParserState *state)

ProgramPoint	getProgramPoint (const IR::Node *node=nullptr) const

const LocationSet *	getWrites (const IR::Expression *expression) const

profile_t	init_apply (const IR::Node *root) override

bool	setDefinitions (Definitions defs, const IR::Node who=nullptr, bool overwrite=false)

void	visitVirtualMethods (const IR::IndexedVector< IR::Declaration > &locals)
	Statements and other control structures.

Protected Attributes
AllDefinitions *	allDefinitions

ProgramPoint	callingContext
	Definitions after exit statements.

Definitions *	currentDefinitions
	Result computed by this pass.

Definitions *	exitDefinitions
	Definitions after return statements.

bool	lhs
	if true we are processing an expression on the lhs of an assignment

AllocTrace	memuse
	True if we are analyzing a virtual method.

alloc_trace_cb_t	nested_trace

Definitions *	returnedDefinitions
	Before statement currently processed.

const StorageMap *	storageMap

bool	virtualMethod

hvec_map< const IR::Expression , const LocationSet >	writes
	For each expression the location set it writes.

Static Protected Attributes
static int	nest_count = 0

Detailed Description

Computes the write set for each expression and statement.

This pass is run for each parser and control separately. It controls precisely the visit order — to simulate a simbolic execution of the program.

Precondition: Must be executed after variable initializers have been removed.

Constructor & Destructor Documentation

◆ ComputeWriteSet()

P4::ComputeWriteSet::ComputeWriteSet	(	const ComputeWriteSet *	source,
		ProgramPoint	context,
		Definitions *	definitions )

inlineprotected

Creates new visitor, but with same underlying data structures. Needed to visit some program fragments repeatedly.

Member Function Documentation

◆ dbprint()

void P4::ComputeWriteSet::dbprint ( std::ostream & out ) const

inlineoverrideprotectedvirtual

Implements IHasDbPrint.

Public Member Functions

Protected Member Functions

Protected Attributes

Static Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ ComputeWriteSet()

Member Function Documentation

◆ dbprint()