@@ -38,42 +38,52 @@ union MYSQL_YYSTYPE; // Forward declare for YY_DECL (Bison defines this in mysql
3838 " INSERT" return TOKEN_INSERT ; }
3939 " INTO" return TOKEN_INTO ; }
4040 " VALUES" return TOKEN_VALUES ; }
41-
42- " QUIT"
43- yylval_param->str_val = new std::string (yytext);
44- return TOKEN_QUIT ;
41+ " QUIT" str_val = new std::string (yytext); return TOKEN_QUIT ; }
42+
43+ " SET" return TOKEN_SET ; }
44+ " NAMES" return TOKEN_NAMES ; }
45+ " CHARACTER" return TOKEN_CHARACTER ; }
46+ " GLOBAL" return TOKEN_GLOBAL ; }
47+ " SESSION" return TOKEN_SESSION ; }
48+ " PERSIST" return TOKEN_PERSIST ; }
49+ " PERSIST_ONLY" return TOKEN_PERSIST_ONLY ;}
50+ " DEFAULT" return TOKEN_DEFAULT ; }
51+ " COLLATE" return TOKEN_COLLATE ; }
52+
53+ " `" str_val = new std::string (); BEGIN (BTIDENT ); }
54+
55+ " @@global." return TOKEN_GLOBAL_VAR_PREFIX ; }
56+ " @@session." return TOKEN_SESSION_VAR_PREFIX ; }
57+ " @@local." return TOKEN_SESSION_VAR_PREFIX ; } /* Alias for session */
58+ " @@persisted." /* Placeholder if you add specific handling */ return TOKEN_PERSIST_VAR_PREFIX ; }
59+ " @@" return TOKEN_DOUBLESPECIAL ; }
60+ " @" return TOKEN_SPECIAL ; }
61+
62+ [a-zA-Z_ ][a-zA-Z0 -9_]* { /* Does not include hyphen for now */
63+ yylval_param->str_val = new std::string (yytext);
64+ return TOKEN_IDENTIFIER ;
4565 }
4666
47- " `"
48- yylval_param->str_val = new std::string (); /* Start empty for backticked id */
49- BEGIN (BTIDENT );
50- }
51- [a-zA-Z_ ][a-zA-Z0 -9_]* {
52- yylval_param->str_val = new std::string (yytext);
53- return TOKEN_IDENTIFIER ;
54- }
55-
56- " '"
57- yylval_param->str_val = new std::string (" '"
58- BEGIN (SQSTRING );
59- }
60- " \" "
61- yylval_param->str_val = new std::string (" \" "
62- BEGIN (DQSTRING );
63- }
67+ " '" str_val = new std::string (" '" BEGIN (SQSTRING ); }
68+ " \" " str_val = new std::string (" \" " BEGIN (DQSTRING ); }
6469
6570 " *" return TOKEN_ASTERISK ; }
6671 " (" return TOKEN_LPAREN ; }
6772 " )" return TOKEN_RPAREN ; }
6873 " ;" return TOKEN_SEMICOLON ; }
74+ " =" return TOKEN_EQUAL ; }
75+ " ." return TOKEN_DOT ; }
76+ " ," return TOKEN_COMMA ; }
77+
78+ [0 -9 ]+(" ." 0 -9 ]+)? { yylval_param->str_val = new std::string (yytext); return TOKEN_NUMBER_LITERAL ;}
6979
70- . {
80+ . {
7181 char err_msg[100 ];
7282 snprintf (err_msg, sizeof (err_msg), " Lexer: Unknown character: '%s'"
73- if (parser_context) {
83+ if (parser_context) {
7484 parser_context->internal_add_error (err_msg);
7585 } else {
76- fprintf (stderr, " %s\n "
86+ fprintf (stderr, " %s\n "
7787 }
7888 }
7989}
@@ -91,7 +101,7 @@ union MYSQL_YYSTYPE; // Forward declare for YY_DECL (Bison defines this in mysql
91101 " \\\\ " str_val ) += " \\ "
92102 " ''" str_val ) += " '"
93103 " '" str_val ) += " '" BEGIN (INITIAL ); return TOKEN_STRING_LITERAL ; }
94- <<EOF >> { if (parser_context) parser_context->internal_add_error (" Unterminated single-quoted string" BEGIN (INITIAL ); return YY_NULL ; /* Return 0 or YY_NULL for EOF/error */ }
104+ <<EOF >> { if (parser_context) parser_context->internal_add_error (" Unterminated single-quoted string" BEGIN (INITIAL ); return YY_NULL ; }
95105}
96106
97107<DQSTRING >{
@@ -104,15 +114,12 @@ union MYSQL_YYSTYPE; // Forward declare for YY_DECL (Bison defines this in mysql
104114}
105115
106116<BTIDENT >{
107- " `" BEGIN (INITIAL ); return TOKEN_IDENTIFIER ; }
117+ " `" BEGIN (INITIAL ); return TOKEN_IDENTIFIER ; } // Returns the accumulated string
108118 " ``" str_val ) += ' `'
109119 [^`\n]+ { *(yylval_param->str_val ) += yytext; }
110- \n { if (parser_context) parser_context->internal_add_error (" Newline in backticked identifier" BEGIN (INITIAL ); /* No explicit return, lexer will find next token or error */ }
120+ \n { if (parser_context) parser_context->internal_add_error (" Newline in backticked identifier" BEGIN (INITIAL ); /* No explicit return */ }
111121 <<EOF >> { if (parser_context) parser_context->internal_add_error (" Unterminated backticked identifier" BEGIN (INITIAL ); return YY_NULL ; }
112122}
113123
114124%%
115125
116- // yywrap is not strictly needed due to %option noyywrap
117- // int mysql_yywrap(yyscan_t scanner) { return 1; }
118-
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