ActionData::Argument Class Reference

#include <action_format.h>

Inheritance diagram for ActionData::Argument:

Public Member Functions
	Argument (IR::ID n, le_bitrange pf)
void	dbprint (std::ostream &out) const override
bool	equiv_value (const Parameter *ad, bool check_cond=true) const override
bool	from_p4_program () const override
const Parameter *	get_extended_param (uint32_t extension, const Parameter *) const override
bool	is_next_bit_of_param (const Parameter *ad, bool) const override
cstring	name () const override
bool	only_one_overlap_solution () const override
cstring	originalName () const
const Parameter *	overlap (const Parameter *ad, bool guaranteed_one_overlap, le_bitrange *my_overlap, le_bitrange *ad_overlap) const override
le_bitrange	param_field () const
int	size () const override
const Parameter *	split (int lo, int hi) const override
Public Member Functions inherited from ActionData::Parameter
virtual bool	can_merge (const Parameter *param) const
bool	can_overlap_ranges (le_bitrange my_range, le_bitrange ad_range, le_bitrange &overlap, le_bitrange *my_overlap, le_bitrange *ad_overlap) const
cstring	cond_name () const
bool	equiv_cond (const Parameter *p) const
template<typename T >
bool	is () const
bool	is_cond_type (ModConditionally_t type) const
virtual bool	is_subset_of (const Parameter *param) const
virtual const Parameter *	merge (const Parameter *param) const
void	set_cond (const Parameter *p)
void	set_cond (ModConditionally_t ct, cstring n)
template<typename T >
const T *	to () const
Public Member Functions inherited from P4::IHasDbPrint
void	print () const

Additional Inherited Members
Protected Attributes inherited from ActionData::Parameter
cstring	_cond_name
ModConditionally_t	_cond_type = NONE

Detailed Description

This class is to represent a slice of an IR::MAU::ActionArg, essentially any argument that appears as a direct argument of an action and is used in an ALU operation:

Let's take the following example:

action act(bit<8> param1, bit<8> param2) { hdr.f1 = param1; hdr.f2 = param2; }

All valid bitranges of param1 and param2, e.g. param1[7:0] or param2[5:4] would be valid instantiations of the Argument class

Member Function Documentation

dbprint()

void ActionData::Argument::dbprint ( std::ostream & out ) const

inlineoverridevirtual

Implements ActionData::Parameter.

equiv_value()

bool ActionData::Argument::equiv_value ( const Parameter * ad, bool check_cond = true ) const

inlineoverridevirtual

Implements ActionData::Parameter.

from_p4_program()

bool ActionData::Argument::from_p4_program ( ) const

inlineoverridevirtual

Implements ActionData::Parameter.

get_extended_param()

const Parameter * ActionData::Argument::get_extended_param ( uint32_t extension, const Parameter *  ) const

inlineoverridevirtual

Implements ActionData::Parameter.

is_next_bit_of_param()

bool ActionData::Argument::is_next_bit_of_param ( const Parameter * ad, bool  ) const

overridevirtual

Implements ActionData::Parameter.

name()

cstring ActionData::Argument::name ( ) const

inlineoverridevirtual

Implements ActionData::Parameter.

only_one_overlap_solution()

bool ActionData::Argument::only_one_overlap_solution ( ) const

inlineoverridevirtual

Implements ActionData::Parameter.

overlap()

const Parameter * ActionData::Argument::overlap ( const Parameter * ad, bool guaranteed_one_overlap, le_bitrange * my_overlap, le_bitrange * ad_overlap ) const

overridevirtual

Returns an Argument if the two Arguments have some equivalency overlap, i.e.: param1[8:15] param1[12:19]

would return param1[12:15]

The two bitrange pointers are overlap offsets into the arguments, i.e. in the corner case: [4:7] [0:3]

Implements ActionData::Parameter.

size()

int ActionData::Argument::size ( ) const

inlineoverridevirtual

Implements ActionData::Parameter.

split()

const Parameter * ActionData::Argument::split ( int lo, int hi ) const

inlineoverridevirtual

Implements ActionData::Parameter.