sql_digest.cc File Reference

#include "sql/sql_digest.h"
#include <assert.h>
#include "lex_string.h"
#include "m_ctype.h"
#include "my_inttypes.h"
#include "my_macros.h"
#include "my_sys.h"
#include "mysql_com.h"
#include "sha2.h"
#include "sql/lexer_yystype.h"
#include "sql/sql_digest_stream.h"
#include "sql/sql_yacc.h"
#include "sql_string.h"
#include "sql/lex_token.h"

Macros
#define	LEX_TOKEN_WITH_DEFINITION
#define	SIZE_OF_A_TOKEN   2

Functions
ulong	get_max_digest_length ()
uint	read_token (const sql_digest_storage *digest_storage, uint index, uint *tok)
	Read a single token from token array. More...
void	store_token (sql_digest_storage *digest_storage, uint token)
	Store a single token in token array. More...
uint	read_identifier (const sql_digest_storage *digest_storage, uint index, const char **id_string, int *id_length)
	Read an identifier from token array. More...
void	store_token_identifier (sql_digest_storage *digest_storage, uint token, size_t id_length, const char *id_name)
	Store an identifier in token array. More...
void	compute_digest_hash (const sql_digest_storage *digest_storage, unsigned char *hash)
	Compute a digest hash. More...
void	compute_digest_text (const sql_digest_storage *digest_storage, String *digest_text)
	Compute a digest text. More...
static uint	peek_token (const sql_digest_storage *digest, uint index)
static void	peek_last_two_tokens (const sql_digest_storage *digest_storage, uint last_id_index, uint *t1, uint *t2)
	Function to read last two tokens from token array. More...
static void	peek_last_three_tokens (const sql_digest_storage *digest_storage, uint last_id_index, uint *t1, uint *t2, uint *t3)
	Function to read last three tokens from token array. More...
sql_digest_state *	digest_add_token (sql_digest_state *state, uint token, Lexer_yystype *yylval)
sql_digest_state *	digest_reduce_token (sql_digest_state *state, uint token_left, uint token_right)

Variables
ulong	max_digest_length = 0

Macro Definition Documentation

LEX_TOKEN_WITH_DEFINITION

#define LEX_TOKEN_WITH_DEFINITION

SIZE_OF_A_TOKEN

#define SIZE_OF_A_TOKEN   2

Function Documentation

compute_digest_hash()

void compute_digest_hash	(	const sql_digest_storage *	digest_storage,
		unsigned char *	hash
	)

Compute a digest hash.

Parameters

	digest_storage	The digest
[out]	hash	The computed digest hash. This parameter is a buffer of size DIGEST_HASH_SIZE.

compute_digest_text()

void compute_digest_text	(	const sql_digest_storage *	digest_storage,
		String *	digest_text
	)

Compute a digest text.

A 'digest text' is a textual representation of a query, where:

• comments are removed,
• non significant spaces are removed,
• literal values are replaced with a special '?' marker,
• lists of values are collapsed using a shorter notation

  Parameters

  	digest_storage	The digest
  [out]	digest_text	The digest text

digest_add_token()

sql_digest_state * digest_add_token	(	sql_digest_state *	state,
		uint	token,
		Lexer_yystype *	yylval
	)

digest_reduce_token()

sql_digest_state * digest_reduce_token	(	sql_digest_state *	state,
		uint	token_left,
		uint	token_right
	)

get_max_digest_length()

ulong get_max_digest_length

(

)

peek_last_three_tokens()

static void peek_last_three_tokens ( const sql_digest_storage *  digest_storage, uint  last_id_index, uint *  t1, uint *  t2, uint *  t3  )

inlinestatic

Function to read last three tokens from token array.

If an identifier is found, do not look for token before that.

peek_last_two_tokens()

static void peek_last_two_tokens ( const sql_digest_storage *  digest_storage, uint  last_id_index, uint *  t1, uint *  t2  )

inlinestatic

Function to read last two tokens from token array.

If an identifier is found, do not look for token before that.

peek_token()

static uint peek_token ( const sql_digest_storage *  digest, uint  index  )

inlinestatic

read_identifier()

uint read_identifier ( const sql_digest_storage *  digest_storage, uint  index, const char **  id_string, int *  id_length  )

inline

Read an identifier from token array.

read_token()

uint read_token ( const sql_digest_storage *  digest_storage, uint  index, uint *  tok  )

inline

Read a single token from token array.

store_token()

void store_token ( sql_digest_storage *  digest_storage, uint  token  )

inline

Store a single token in token array.

store_token_identifier()

void store_token_identifier ( sql_digest_storage *  digest_storage, uint  token, size_t  id_length, const char *  id_name  )

inline

Store an identifier in token array.

Variable Documentation

max_digest_length

ulong max_digest_length = 0