Glib::Markup::ParseContext Class Reference

A parse context is used to parse marked-up documents. More...

#include <glibmm/markup.h>

Inheritance diagram for Glib::Markup::ParseContext:

Public Member Functions
	ParseContext (Parser & parser, ParseFlags flags=ParseFlags(0))
	Creates a new parse context.
	ParseContext (const ParseContext &)=delete
ParseContext &	operator= (const ParseContext &)=delete
	ParseContext (ParseContext && other) noexcept
ParseContext &	operator= (ParseContext && other) noexcept
virtual	~ParseContext ()
void	parse (const Glib::ustring & text)
	Feed some data to the ParseContext.
void	parse (const char * text_begin, const char * text_end)
	Feed some data to the ParseContext.
void	end_parse ()
	Signals to the ParseContext that all data has been fed into the parse context with parse().
Glib::ustring	get_element () const
	Retrieves the name of the currently open element.
int	get_line_number () const
	Retrieves the current line number.
int	get_char_number () const
	Retrieves the number of the current character on the current line.
gsize	get_offset () const
	Retrieves the current offset from the beginning of the document, in bytes.
void	get_tag_start (gsize & line_number, gsize & char_number, gsize & offset) const
	Retrieves the start position of the current start or end tag.
Parser *	get_parser ()
const Parser *	get_parser () const

Detailed Description

A parse context is used to parse marked-up documents.

You can feed any number of documents into a context, as long as no errors occur; once an error occurs, the parse context can't continue to parse text (you have to destroy it and create a new parse context).

Constructor & Destructor Documentation

ParseContext() [1/3]

Glib::Markup::ParseContext::ParseContext ( Parser & parser, ParseFlags flags = ParseFlags(0) )

explicit

Creates a new parse context.

Parameters

parser	A Markup::Parser instance.
flags	Bitwise combination of Markup::ParseFlags.

ParseContext() [2/3]

Glib::Markup::ParseContext::ParseContext ( const ParseContext & )

delete

ParseContext() [3/3]

Glib::Markup::ParseContext::ParseContext ( ParseContext && other )

noexcept

~ParseContext()

virtual Glib::Markup::ParseContext::~ParseContext ( )

virtual

Member Function Documentation

end_parse()

void Glib::Markup::ParseContext::end_parse

(

)

Signals to the ParseContext that all data has been fed into the parse context with parse().

This method reports an error if the document isn't complete, for example if elements are still open.

Exceptions

Glib::MarkupError

get_char_number()

int Glib::Markup::ParseContext::get_char_number

(

)

const

Retrieves the number of the current character on the current line.

Intended for use in error messages; there are no strict semantics for what constitutes the "current" character number other than "the best number we could come up with for error messages."

get_element()

Glib::ustring Glib::Markup::ParseContext::get_element

(

)

const

Retrieves the name of the currently open element.

Returns

The name of the currently open element, or "".

get_line_number()

int Glib::Markup::ParseContext::get_line_number

(

)

const

Retrieves the current line number.

Intended for use in error messages; there are no strict semantics for what constitutes the "current" line number other than "the best number we could come up with for error messages."

get_offset()

gsize Glib::Markup::ParseContext::get_offset

(

)

const

Retrieves the current offset from the beginning of the document, in bytes.

The information is meant to accompany the values returned by get_line_number() and get_char_number(), and comes with the same accuracy guarantees.

Since glibmm 2.88

get_parser() [1/2]

Parser * Glib::Markup::ParseContext::get_parser ( )

inline

get_parser() [2/2]

const Parser * Glib::Markup::ParseContext::get_parser ( ) const

inline

get_tag_start()

void Glib::Markup::ParseContext::get_tag_start	(	gsize &	line_number,
		gsize &	char_number,
		gsize &	offset ) const

Retrieves the start position of the current start or end tag.

This function can be used in the start_element or end_element callbacks to obtain location information for error reporting.

Note that line_number and char_number are intended for human readable error messages and are therefore 1-based and in Unicode characters. offset on the other hand is meant for programmatic use, and thus is 0-based and in bytes.

The information is meant to accompany the values returned by get_line_number() and get_char_number(), and comes with the same accuracy guarantees.

Parameters

[out]	line_number	The line number.
[out]	char_number	The character number.
[out]	offset	Offset from the beginning of the document.

Since glibmm 2.88

operator=() [1/2]

ParseContext & Glib::Markup::ParseContext::operator= ( const ParseContext & )

delete

operator=() [2/2]

ParseContext & Glib::Markup::ParseContext::operator= ( ParseContext && other )

noexcept

parse() [1/2]

void Glib::Markup::ParseContext::parse	(	const char *	text_begin,
		const char *	text_end )

Feed some data to the ParseContext.

The data need not be valid UTF-8; an error will be signalled if it's invalid. The data need not be an entire document; you can feed a document into the parser incrementally, via multiple calls to this function. Typically, as you receive data from a network connection or file, you feed each received chunk of data into this function, aborting the process if an error occurs. Once an error is reported, no further data may be fed to the ParseContext; all errors are fatal.

Parameters

text_begin	Begin of chunk of text to parse.
text_end	End of chunk of text to parse.

Exceptions

Glib::MarkupError

parse() [2/2]

void Glib::Markup::ParseContext::parse

(

const Glib::ustring &

text

)

Feed some data to the ParseContext.

The data need not be valid UTF-8; an error will be signalled if it's invalid. The data need not be an entire document; you can feed a document into the parser incrementally, via multiple calls to this function. Typically, as you receive data from a network connection or file, you feed each received chunk of data into this function, aborting the process if an error occurs. Once an error is reported, no further data may be fed to the ParseContext; all errors are fatal.

Parameters

text	Chunk of text to parse.

Exceptions

Glib::MarkupError