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Hello the team:
I'm now learning the yacc & lex and want to write a simple SQL parser,
Here's part of my code
%option noyywrap
%option bison-bridge
%option reentrant
...
enum {
UNDEFINED = 1,
CREATE,
TABLE,
UPDATE,
SET,
INSERT,
INTO,
VALUES,
DELETE,
FROM,
SELECT,
GET,
PUT,
EXIST,
USER,
BEGIN,
COMMIT,
ROLLBACK
};
...
[Cc][Rr][Ee][Aa][Tt][Ee] RETURN_TOKEN(CREATE)
[Tt][Aa][Bb][Ll][Ee] RETURN_TOKEN(TABLE)
[Uu][Pp][Dd][Aa][Tt][Ee] RETURN_TOKEN(UPDATE)
[Ss][Ee][Tt] RETURN_TOKEN(SET)
[Ii][Nn][Ss][Ee][Rr][Tt] RETURN_TOKEN(INSERT)
[Ii][Nn][Tt]Oo RETURN_TOKEN(INTO)
As you can see,I want to let the lex recognized the token,but when I compile the c code generated by the lex,
some error showed:
[beginnerc@fedora SimpleSQL]$ lex try.l [beginnerc@fedora SimpleSQL]$ gcc lex.yy.c lex.yy.c:145:18: error: expected ',' or '}' before '->' token 145 | */ | ^ try.l:32:5: note: in expansion of macro 'BEGIN' 32 | BEGIN, | ^~~~~ lex.yy.c:559:5: error: unknown type name 'YYSTYPE' 559 | | ^ lex.yy.c:606:1: error: unknown type name 'YYSTYPE'; did you mean 'YYSTATE'? 606 | | ^ | YYSTATE lex.yy.c:608:19: error: unknown type name 'YYSTYPE'; did you mean 'YYSTATE'? 608 | | ^ | YYSTATE lex.yy.c:726:17: error: unknown type name 'YYSTYPE'; did you mean 'YYSTATE'? 726 | extern int yylex \ | ^~ | YYSTATE
Can someone give me some advice to fix the error?
Thanks in advance!
Yours,
WenYi.
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