Base Interpreter specialisation for message encoders that works on a subset at a time. More...

#include <internals.h>

Inheritance diagram for wreport::bulletin::UncompressedEncoder:

Public Member Functions
	UncompressedEncoder (const Bulletin &bulletin, unsigned subset_no)

const Var &	peek_var ()
	Get the next variable, without incrementing current_var.

const Var &	get_var ()
	Get the next variable, incrementing current_var by 1.

const Var &	get_var (unsigned pos) const
	Get the variable at the given position.

void	define_bitmap (unsigned bitmap_size) override
	Request processing of a data present bitmap. More...

void	define_variable (Varinfo info) override
	Request processing, according to info, of a data variable.

void	define_variable_with_associated_field (Varinfo info) override
	Request processing, according to info, of a data variable.

unsigned	define_delayed_replication_factor (Varinfo info) override
	Request processing, according to info, of a data variabile that is significant for controlling the encoding process. More...

unsigned	define_associated_field_significance (Varinfo info) override
	Request processing of an associated field significance variable (B31021). More...

unsigned	define_bitmap_delayed_replication_factor (Varinfo info) override
	Request processing of a delayed replication factor variable used to encode the size of a bitmap. More...

virtual void	encode_var (Varinfo info, const Var &var)
	Encode a variable. More...

virtual void	encode_associated_field (const Var &var)
	Encode an attribute for an associated field. More...

Public Member Functions inherited from wreport::bulletin::Interpreter
	Interpreter (const Tables &tables, const Opcodes &opcodes)

	Interpreter (const Interpreter &)=delete

Interpreter &	operator= (const Interpreter &)=delete

void	run ()
	Run the interpreter.

virtual void	b_variable (Varcode code)
	Notify of a B variable entry. More...

virtual void	c_modifier (Varcode code, Opcodes &next)
	Notify of a C modifier. More...

virtual void	r_replication (Varcode code, Varcode delayed_code, const Opcodes &ops)
	Handle a replicated section. More...

virtual void	r_bitmap (Varcode code, Varcode delayed_code, const Opcodes &ops)
	Handle a replicated section which defines a bitmap.

virtual void	run_r_repetition (unsigned cur, unsigned total)
	Executes a repetition of the opcodes on top of the stack. More...

virtual void	run_d_expansion (Varcode code)
	Executes the expansion of code, which has been put on top of the opcode stack. More...

virtual void	define_substituted_value (unsigned pos)
	Request processing of a substituted value corresponding to position pos in the list or previous variables.

virtual void	define_attribute (Varinfo info, unsigned pos)
	Request processing of an attribute encoded with info, related to the variable as position pos in the list of previous variables.

virtual void	define_raw_character_data (Varcode code)
	Request processing of C05yyy raw character data.

virtual void	define_c03_refval_override (Varcode code)
	Request processing of a new value for the reference value of the given B code.

Data Fields
const Subset &	current_subset
	Current subset (used to refer to past variables)

unsigned	current_var = 0
	Index of the next variable to be visited.

Data Fields inherited from wreport::bulletin::Interpreter
const Tables &	tables

std::stack< Opcodes >	opcode_stack

Bitmaps	bitmaps
	Bitmap iteration.

AssociatedField	associated_field
	Current associated field state.

int	c_scale_change = 0
	Current value of scale change from C modifier.

int	c_width_change = 0
	Current value of width change from C modifier.

int	c_scale_ref_width_increase = 0
	Increase of scale, reference value and data width.

int	c_string_len_override = 0
	Current value of string length override from C08 modifiers (0 for no override)

std::map< wreport::Varcode, uint32_t >	c03_refval_overrides
	Current reference value overrides.

unsigned	c03_refval_override_bits = 0
	Set to the number of reference value override bits while reading the override values.

Additional Inherited Members
Static Public Member Functions inherited from wreport::bulletin::Interpreter
static void	print_c_modifier (FILE *out, Varcode code, Opcodes &nex)
	Print a description of this C modifier.

Protected Member Functions inherited from wreport::bulletin::Interpreter
Varinfo	get_varinfo (Varcode code)
	Return a Varinfo for the given Varcode, applying all relevant C modifications that are currently active.

Detailed Description

Base Interpreter specialisation for message encoders that works on a subset at a time.

Member Function Documentation

◆ define_associated_field_significance()

unsigned wreport::bulletin::UncompressedEncoder::define_associated_field_significance ( Varinfo info )

overridevirtual

Request processing of an associated field significance variable (B31021).

Returns: the associated field significance value

Reimplemented from wreport::bulletin::Interpreter.

◆ define_bitmap()

void wreport::bulletin::UncompressedEncoder::define_bitmap ( unsigned bitmap_size )

overridevirtual

Request processing of a data present bitmap.

Parameters

code	The C modifier code that defines the bitmap
rep_code	The R replicator that defines the bitmap
delayed_code	The B delayed replicator that defines the bitmap length (it is 0 if the length is encoded in the YYY part of rep_code
ops	The replicated opcodes that define the bitmap

Returns: The bitmap that has been processed.

Reimplemented from wreport::bulletin::Interpreter.

◆ define_bitmap_delayed_replication_factor()

unsigned wreport::bulletin::UncompressedEncoder::define_bitmap_delayed_replication_factor ( Varinfo info )

overridevirtual

Request processing of a delayed replication factor variable used to encode the size of a bitmap.

Returns: the repetition count

Reimplemented from wreport::bulletin::Interpreter.

◆ define_delayed_replication_factor()

unsigned wreport::bulletin::UncompressedEncoder::define_delayed_replication_factor ( Varinfo info )

overridevirtual

Request processing, according to info, of a data variabile that is significant for controlling the encoding process.

This means that the variable has always the same value on all datasets (in case of compressed datasets), and that the interpreter needs to know its value.

Returns: the value of the variable, or 0xffffffff if it is unset

Reimplemented from wreport::bulletin::Interpreter.

◆ encode_associated_field()

virtual void wreport::bulletin::UncompressedEncoder::encode_associated_field ( const Var & var )

virtual

Encode an attribute for an associated field.

Var is the variable that the associated field refers to. The actual value of the associated field can be looked up using the functions in this->associated_field.

Reimplemented in wreport::bulletin::DDSPrinter.

◆ encode_var()

virtual void wreport::bulletin::UncompressedEncoder::encode_var	(	Varinfo	info,
		const Var &	var
	)

virtual

Encode a variable.

By default, this raises error_unimplemented. For decoders that encode normal variables, delayed replication factors, bitmap delayed replication factors, and associated field significances in the same way, can just override this method and use the default define_* implementations.

Reimplemented in wreport::bulletin::DDSValidator, and wreport::bulletin::DDSPrinter.

The documentation for this struct was generated from the following file:

internals.h

Public Member Functions

Data Fields

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ define_associated_field_significance()

◆ define_bitmap()

◆ define_bitmap_delayed_replication_factor()

◆ define_delayed_replication_factor()

◆ encode_associated_field()

◆ encode_var()