Visitor-style interface for scanning the contents of a data descriptor section. More...

#include <opcode.h>

Inheritance diagram for wreport::opcode::Visitor:

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

virtual void	c_modifier (Varcode code)
	Notify of a C modifier. More...

virtual void	c_change_data_width (Varcode code, int change)
	Notify a change of data width. More...

virtual void	c_change_data_scale (Varcode code, int change)
	Notify a change of data scale. More...

virtual void	c_associated_field (Varcode code, Varcode sig_code, unsigned nbits)
	Notify the declaration of an associated field for the next values. More...

virtual void	c_char_data (Varcode code)
	Notify raw character data encoded via a C modifier. More...

virtual void	c_char_data_override (Varcode code, unsigned new_length)
	Notify an override of character data length. More...

virtual void	c_quality_information_bitmap (Varcode code)
	Notify a bitmap for quality information data. More...

virtual void	c_substituted_value_bitmap (Varcode code)
	Notify a bitmap for substituted values. More...

virtual void	c_substituted_value (Varcode code)
	Notify a substituted value. More...

virtual void	c_local_descriptor (Varcode code, Varcode desc_code, unsigned nbits)
	Notify the length of the following local descriptor. More...

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

virtual void	d_group_begin (Varcode code)
	Notify the start of a D group. More...

virtual void	d_group_end (Varcode code)
	Notify the end of a D group. More...

virtual void	c_increase_scale_ref_width (Varcode code, int change)
	Notify an increase of scale, reference value and data width. More...

Data Fields
const DTable *	dtable
	D table to use to expand D groups. More...

Detailed Description

Visitor-style interface for scanning the contents of a data descriptor section.

This supports scanning the DDS without looking at the data, so it cannot be used for encoding/decoding, as it cannot access the data that controls decoding such as delayed replicator factors or data descriptor bitmaps.

All interface methods have a default implementations that do nothing, so you can override only what you need.

Member Function Documentation

virtual void wreport::opcode::Visitor::b_variable ( Varcode code )

virtual

Notify of a B variable entry.

Parameters

code	The B variable code

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::c_associated_field	(	Varcode	code,
		Varcode	sig_code,
		unsigned	nbits
	)

virtual

Notify the declaration of an associated field for the next values.

Parameters

code	The C modifier code
sig_code	The B code of the associated field significance opcode (or 0 to mark the end of the associated field encoding)
nbits	The number of bits used for the associated field.

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::c_change_data_scale	(	Varcode	code,
		int	change
	)

virtual

Notify a change of data scale.

Parameters

code	The C modifier code
change	The scale change (positive or negative)

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::c_change_data_width	(	Varcode	code,
		int	change
	)

virtual

Notify a change of data width.

Parameters

code	The C modifier code
change	The width change (positive or negative)

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::c_char_data ( Varcode code )

virtual

Notify raw character data encoded via a C modifier.

Parameters

code	The C modifier code

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::c_char_data_override	(	Varcode	code,
		unsigned	new_length
	)

virtual

Notify an override of character data length.

Parameters

code	The C modifier code
new_length	New length of all following character data (or 0 to reset to default)

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::c_increase_scale_ref_width	(	Varcode	code,
		int	change
	)

virtual

Notify an increase of scale, reference value and data width.

Parameters

code	The C modifier code
change	The increase, to be handled according to table C, X=7

Reimplemented in wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::c_local_descriptor	(	Varcode	code,
		Varcode	desc_code,
		unsigned	nbits
	)

virtual

Notify the length of the following local descriptor.

Parameters

code	The C modifier code
desc_code	Local descriptor for which the length is provided
nbits	Bit size of the data described by desc_code

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::c_modifier ( Varcode code )

virtual

Notify of a C modifier.

Whenever the modifier is a supported one, this is followed by an invocation of one of the specific c_* methods.

Parameters

code	The C modifier code

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::c_quality_information_bitmap ( Varcode code )

virtual

Notify a bitmap for quality information data.

Parameters

code	The C modifier code

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::c_substituted_value ( Varcode code )

virtual

Notify a substituted value.

Parameters

code	The C modifier code

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::c_substituted_value_bitmap ( Varcode code )

virtual

Notify a bitmap for substituted values.

Parameters

code	The C modifier code

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::Visitor.

virtual void wreport::opcode::Visitor::d_group_begin ( Varcode code )

virtual

Notify the start of a D group.

Parameters

code	The D code that is being expanded

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::DDSPrinter.

virtual void wreport::opcode::Visitor::d_group_end ( Varcode code )

virtual

Notify the end of a D group.

Parameters

code	The D code that has just been expanded

Reimplemented in wreport::opcode::Printer, and wreport::bulletin::DDSPrinter.

virtual void wreport::opcode::Visitor::r_replication	(	Varcode	code,
		Varcode	delayed_code,
		const Opcodes &	ops
	)

virtual

Notify a replicated section.

Parameters

code	The R replication code
delayed_code	The delayed replication B code, or 0 if delayed replication is not used
ops	The replicated operators

Reimplemented in wreport::opcode::Printer, wreport::bulletin::Visitor, and wreport::bulletin::DDSPrinter.

Field Documentation

const DTable* wreport::opcode::Visitor::dtable

D table to use to expand D groups.

This must be provided by the caller

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

opcode.h

Public Member Functions

Data Fields

Detailed Description

Member Function Documentation

Field Documentation