lestes::lang::cplus::lex::line_control Class Reference

Line number control. More...

#include <line_control.hh>

Inheritance diagram for lestes::lang::cplus::lex::line_control:

List of all members.

Public Member Functions
ptr< source_location >	translate_location (const ptr< simple_location > &physical) const
	Translates physical location to source location.
void	change_line (const ptr< source_location > &before, ulint line_number)
	Changes line numbering.
void	change_file (const lstring &file_name)
	Changes file name.
Static Public Member Functions
static ptr< line_control >	create (const ptr< file_info > &a_info)
	Returns new instance, initializes with file information.
Protected Member Functions
	line_control (const ptr< file_info > &a_info)
	Creates the object.
virtual void	gc_mark (void)
	Marks the object.
Private Member Functions
	line_control (const line_control &)
	Hides copy constructor.
line_control &	operator= (const line_control &)
	Hides assignment operator.
Private Attributes
srp< file_info >	file
	The file information for locations.
ulint	delta
	The delta between physical and logical line number.

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Detailed Description

Line number control.

Performs translating physical location to full featured source location information. Handles line number and file name changes as of line directive.

Definition at line 61 of file line_control.hh.

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Constructor & Destructor Documentation

lestes::lang::cplus::lex::line_control::line_control

(

const ptr< file_info > &

a_file

)

[protected]

Creates the object.

Creates line control, initializes with file information.

Precondition:

a_file != NULL

Parameters:

a_file

The file information for the created locations.

Definition at line 51 of file line_control.cc.

Referenced by create().

                                                      :
        file(checked(a_file)),
        delta(0)
{
}

lestes::lang::cplus::lex::line_control::line_control

(

const line_control &

)

[private]

Hides copy constructor.

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Member Function Documentation

ptr< source_location > lestes::lang::cplus::lex::line_control::translate_location

(

const ptr< simple_location > &

physical

)

const

Translates physical location to source location.

Translates physical location to full source location considering changes of file names.

Parameters:

physical

The physical location to translate.

Returns:

The location with current file information and line number transformed appropriately.

Definition at line 86 of file line_control.cc.

References delta, and file.

{
        return source_location::create(file,physical->line_get() + delta,physical->column_get());
}

void lestes::lang::cplus::lex::line_control::change_line	(	const ptr< source_location > &	before,
		ulint	line_number
	)

Changes line numbering.

Changes line numbering so that the line after location will be to line_number. The behaviour is as through the line directive.

Parameters:

	before	Location on line just before the change to take effect, due to multiline comments, it has to be the location of the newline at the end of the line directive.
	line_number	The new line number for the next line after the line directive.

Definition at line 64 of file line_control.cc.

References delta.

{
        // the new delta is a correction of line_number by physical line number of the next line
        delta = line_number - (before->line_get() + 1 - delta);
}

void lestes::lang::cplus::lex::line_control::change_file

(

const lstring &

file_name

)

Changes file name.

Changes current file name, so that the location will contain the new file name. The inclusion chain is left intact, only the most nested entry is affected.

Parameters:

file_name

The new file name for the current file.

Definition at line 75 of file line_control.cc.

References file.

{
        // TODO pt make this a clone on file_info ???
        file = file_info::create(file_name,file->origin_get());
}

ptr< line_control > lestes::lang::cplus::lex::line_control::create

(

const ptr< file_info > &

a_file

)

[static]

Returns new instance, initializes with file information.

Returns new instance, initializes with file information.

Parameters:

a_file

The file information for the created locations.

Definition at line 104 of file line_control.cc.

References line_control().

{
        return new line_control(a_file);
}

void lestes::lang::cplus::lex::line_control::gc_mark

(

void

)

[protected, virtual]

Marks the object.

Marks the object.

Reimplemented from lestes::std::mem::keystone.

Definition at line 94 of file line_control.cc.

References file.

{
        file.gc_mark();
        object::gc_mark();
}

line_control& lestes::lang::cplus::lex::line_control::operator=

(

const line_control &

)

[private]

Hides assignment operator.

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Member Data Documentation

srp<file_info> lestes::lang::cplus::lex::line_control::file [private]

The file information for locations.

Definition at line 78 of file line_control.hh.

Referenced by change_file(), gc_mark(), and translate_location().

ulint lestes::lang::cplus::lex::line_control::delta [private]

The delta between physical and logical line number.

Definition at line 80 of file line_control.hh.

Referenced by change_line(), and translate_location().

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The documentation for this class was generated from the following files:

• line_control.hh
• line_control.cc

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