anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier Class Reference

Because it's not possible to disentangle the state of the parser from the THD, we have to destructively modify the current THD object in order to parse. More...

Public Member Functions
	Thd_parse_modifier (THD *thd, uchar *token_buffer)
	~Thd_parse_modifier ()

Private Attributes
THD *	m_thd
MEM_ROOT	m_mem_root
Query_arena	m_arena
LEX *	m_backed_up_lex
LEX	m_lex
sql_digest_state	m_digest_state
Parser_state *	m_saved_parser_state
sql_digest_state *	m_saved_digest
const CHARSET_INFO *	m_cs

Detailed Description

Because it's not possible to disentangle the state of the parser from the THD, we have to destructively modify the current THD object in order to parse.

This class backs up and restores members that are modified in Item_func_statement_digest::val_str_ascii. It also sports its own Query_arena and LEX objects, which are used during parsing.

Constructor & Destructor Documentation

Thd_parse_modifier()

anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier::Thd_parse_modifier ( THD *  thd, uchar *  token_buffer  )

inline

~Thd_parse_modifier()

anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier::~Thd_parse_modifier ( )

inline

Member Data Documentation

m_arena

Query_arena anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier::m_arena

private

m_backed_up_lex

LEX* anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier::m_backed_up_lex

private

m_cs

const CHARSET_INFO* anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier::m_cs

private

m_digest_state

sql_digest_state anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier::m_digest_state

private

m_lex

LEX anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier::m_lex

private

m_mem_root

MEM_ROOT anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier::m_mem_root

private

m_saved_digest

sql_digest_state* anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier::m_saved_digest

private

m_saved_parser_state

Parser_state* anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier::m_saved_parser_state

private

m_thd

THD* anonymous_namespace{item_strfunc.cc}::Thd_parse_modifier::m_thd

private

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

• sql/item_strfunc.cc