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Support for variables with components

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Added framework to create/drop and manager buffers for multiple key caches
This commit is contained in:
monty@mashka.mysql.fi
2003-07-06 19:09:57 +03:00
parent bad00c38df
commit ebcc7b5a4f
42 changed files with 572 additions and 127 deletions
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23
sql/sql_lex.cc
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@ -557,10 +557,12 @@ int yylex(void *arg, void *yythd)
return(IDENT);
case MY_LEX_IDENT_SEP: // Found ident and now '.'
lex->next_state=MY_LEX_IDENT_START;// Next is an ident (not a keyword)
yylval->lex_str.str=(char*) lex->ptr;
yylval->lex_str.length=1;
c=yyGet(); // should be '.'
lex->next_state= MY_LEX_IDENT_START;// Next is an ident (not a keyword)
if (!ident_map[yyPeek()]) // Probably ` or "
lex->next_state= MY_LEX_START;
return((int) c);
case MY_LEX_NUMBER_IDENT: // number or ident which num-start
@ -601,7 +603,7 @@ int yylex(void *arg, void *yythd)
yyUnget();
}
// fall through
case MY_LEX_IDENT_START: // Incomplete ident
case MY_LEX_IDENT_START: // We come here after '.'
#if defined(USE_MB) && defined(USE_MB_IDENT)
if (use_mb(cs))
{
@ -689,6 +691,7 @@ int yylex(void *arg, void *yythd)
}
if (c == delim)
yySkip(); // Skip end `
lex->next_state= MY_LEX_START;
return(IDENT);
}
case MY_LEX_SIGNED_NUMBER: // Incomplete signed number
@ -707,9 +710,9 @@ int yylex(void *arg, void *yythd)
if (c != '.')
{
if (c == '-' && my_isspace(cs,yyPeek()))
state=MY_LEX_COMMENT;
state= MY_LEX_COMMENT;
else
state = MY_LEX_CHAR; // Return sign as single char
state= MY_LEX_CHAR; // Return sign as single char
break;
}
yyUnget(); // Fix for next loop
@ -868,7 +871,7 @@ int yylex(void *arg, void *yythd)
else
state=MY_LEX_CHAR; // Return '*'
break;
case MY_LEX_SET_VAR: // Check if ':='
case MY_LEX_SET_VAR: // Check if ':='
if (yyPeek() != '=')
{
state=MY_LEX_CHAR; // Return ':'
@ -904,8 +907,8 @@ int yylex(void *arg, void *yythd)
state = MY_LEX_REAL; // Real
else
{
state = MY_LEX_CHAR; // return '.'
lex->next_state=MY_LEX_IDENT_START;// Next is an ident (not a keyword)
state= MY_LEX_IDENT_SEP; // return '.'
yyUnget(); // Put back '.'
}
break;
case MY_LEX_USER_END: // end '@' of user@hostname
@ -933,8 +936,11 @@ int yylex(void *arg, void *yythd)
case MY_LEX_SYSTEM_VAR:
yylval->lex_str.str=(char*) lex->ptr;
yylval->lex_str.length=1;
lex->next_state=MY_LEX_IDENT_OR_KEYWORD;
yySkip(); // Skip '@'
lex->next_state= (state_map[yyPeek()] ==
MY_LEX_USER_VARIABLE_DELIMITER ?
MY_LEX_OPERATOR_OR_IDENT :
MY_LEX_IDENT_OR_KEYWORD);
return((int) '@');
case MY_LEX_IDENT_OR_KEYWORD:
/*
@ -942,7 +948,6 @@ int yylex(void *arg, void *yythd)
We should now be able to handle:
[(global | local | session) .]variable_name
*/
while (ident_map[c=yyGet()]) ;
if (c == '.')
lex->next_state=MY_LEX_IDENT_SEP;