Inheritance diagram for BMV2::HeaderConverter:

Public Member Functions
	HeaderConverter (ConversionContext *ctxt, cstring scalarsName)

void	addHeaderStacks (const IR::Type_Struct *type)

void	addTypesAndInstances (const IR::Type_StructLike *type, bool meta)

void	end_apply (const IR::Node *node) override

Visitor::profile_t	init_apply (const IR::Node *node) override

bool	isHeaders (const IR::Type_StructLike *st)

bool	preorder (const IR::Parameter *param) override

Protected Member Functions
void	addHeaderField (const cstring &header, const cstring &name, int size, bool is_signed)

void	addHeaderType (const IR::Type_StructLike *st)

Util::JsonArray *	addHeaderUnionFields (cstring hdrName, const IR::Type_HeaderUnion *type)

Util::JsonArray *	pushNewArray (Util::JsonArray *parent)

Member Function Documentation

◆ addTypesAndInstances()

void BMV2::HeaderConverter::addTypesAndInstances	(	const IR::Type_StructLike *	type,
		bool	meta )

Create header type and header instance from a IR::StructLike type

Parameters

meta	this boolean indicates if the struct is a metadata or header.

Visitor::profile_t BMV2::HeaderConverter::init_apply ( const IR::Node * node )

override

We synthesize a "header_type" for each local which has a struct type and we pack all the scalar-typed locals into a 'scalar' type

bool BMV2::HeaderConverter::preorder ( const IR::Parameter * param )

override

Generate ctxt->json for header from IR::Block's constructor parameters

The only allowed fields in a struct are: Type_Bits, Type_Bool and Type_Header

header H { bit<32> x; }

struct { bit<32> x; bool y; H h; }

Type_Struct within a Type_Struct, i.e. nested struct, should be flattened apriori.