Simple_cstring Class Reference

A wrapper class for null-terminated constant strings. More...

#include <sql_string.h>

Inheritance diagram for Simple_cstring:

Public Member Functions
void	set (const char *str_arg, size_t length_arg)
	Initialize from a C string whose length is already known. More...
	Simple_cstring ()
	Simple_cstring (const char *str_arg, size_t length_arg)
	Simple_cstring (const LEX_STRING arg)
	Simple_cstring (const LEX_CSTRING arg)
void	reset ()
void	set (const char *str)
	Set to a null-terminated string. More...
const char *	ptr () const
	Return string buffer. More...
bool	is_set () const
	Check if m_ptr is set. More...
size_t	length () const
	Return name length. More...
bool	eq_bin (const Simple_cstring other) const
	Compare to another Simple_cstring. More...
void	strcpy (char *buff) const
	Copy to the given buffer. More...

Private Attributes
const char *	m_str
size_t	m_length

Detailed Description

A wrapper class for null-terminated constant strings.

Constructors make sure that the position of the '\0' terminating byte in m_str is always in sync with m_length.

This class must stay as small as possible as we often pass it and its descendants (such as Name_string) into functions using call-by-value evaluation.

Don't add new members or virtual methods to this class!

Constructor & Destructor Documentation

Simple_cstring() [1/4]

Simple_cstring::Simple_cstring ( )

inline

Simple_cstring() [2/4]

Simple_cstring::Simple_cstring ( const char *  str_arg, size_t  length_arg  )

inline

Simple_cstring() [3/4]

Simple_cstring::Simple_cstring ( const LEX_STRING  arg )

inline

Simple_cstring() [4/4]

Simple_cstring::Simple_cstring ( const LEX_CSTRING  arg )

inline

Member Function Documentation

eq_bin()

bool Simple_cstring::eq_bin ( const Simple_cstring  other ) const

inline

Compare to another Simple_cstring.

is_set()

bool Simple_cstring::is_set ( ) const

inline

Check if m_ptr is set.

length()

size_t Simple_cstring::length ( ) const

inline

Return name length.

ptr()

const char * Simple_cstring::ptr ( ) const

inline

Return string buffer.

reset()

void Simple_cstring::reset ( )

inline

set() [1/2]

void Simple_cstring::set ( const char *  str )

inline

Set to a null-terminated string.

set() [2/2]

void Simple_cstring::set ( const char *  str_arg, size_t  length_arg  )

inline

Initialize from a C string whose length is already known.

strcpy()

void Simple_cstring::strcpy ( char *  buff ) const

inline

Copy to the given buffer.

Member Data Documentation

m_length

size_t Simple_cstring::m_length

private

m_str

const char* Simple_cstring::m_str

private

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

• include/sql_string.h