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105 lines
2.0 KiB
105 lines
2.0 KiB
%{
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/* code here */
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#include <stdarg.h>
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#include "sqlhist-parse.h"
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extern int my_yyinput(void *extra, char *buf, int max);
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#undef YY_INPUT
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#define YY_INPUT(b, r, m) ({r = my_yyinput(yyextra, b, m);})
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#define YY_NO_INPUT
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#define YY_NO_UNPUT
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#define YY_EXTRA_TYPE struct sqlhist_bison *
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#define yytext yyg->yytext_r
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#define TRACE_SB ((struct sqlhist_bison *)yyextra)
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#define HANDLE_COLUMN do { TRACE_SB->line_idx += strlen(yytext); } while (0)
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%}
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%option caseless
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%option reentrant
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%option bison-bridge
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field \\?[a-z_][a-z0-9_\.]*
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qstring \"[^\"]*\"
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hexnum 0x[0-9a-f]+
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number [0-9a-f]+
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%%
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select { HANDLE_COLUMN; return SELECT; }
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as { HANDLE_COLUMN; return AS; }
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from { HANDLE_COLUMN; return FROM; }
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join { HANDLE_COLUMN; return JOIN; }
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on { HANDLE_COLUMN; return ON; }
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where { HANDLE_COLUMN; return WHERE; }
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cast { HANDLE_COLUMN; return CAST; }
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sym-offset {
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HANDLE_COLUMN;
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yylval->string = store_str(TRACE_SB, yyg->yytext_r);
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return FIELD;
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}
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{qstring} {
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HANDLE_COLUMN;
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yylval->string = store_str(TRACE_SB, yyg->yytext_r);
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return STRING;
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}
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{field} {
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const char *str = yyg->yytext_r;
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HANDLE_COLUMN;
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if (str[0] == '\\') { str++; };
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yylval->string = store_str(TRACE_SB, str);
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return FIELD;
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}
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{hexnum} {
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HANDLE_COLUMN;
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yylval->number = strtol(yyg->yytext_r, NULL, 0);
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return NUMBER;
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}
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{number} {
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HANDLE_COLUMN;
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yylval->number = strtol(yyg->yytext_r, NULL, 0);
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return NUMBER;
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}
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\!= { HANDLE_COLUMN; return NEQ; }
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\<= { HANDLE_COLUMN; return LE; }
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\>= { HANDLE_COLUMN; return GE; }
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== { HANDLE_COLUMN; return EQ; }
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&& { HANDLE_COLUMN; return AND; }
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"||" { HANDLE_COLUMN; return OR; }
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[<>&~] { HANDLE_COLUMN; return yytext[0]; }
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[\!()\-\+\*/,=] { HANDLE_COLUMN; return yytext[0]; }
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[ \t] { HANDLE_COLUMN; }
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\n { TRACE_SB->line_idx = 0; TRACE_SB->line_no++; }
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. { HANDLE_COLUMN; return PARSE_ERROR; }
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%%
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int yywrap(void *data)
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{
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return 1;
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}
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void yyerror(struct sqlhist_bison *sb, char *fmt, ...)
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{
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struct yyguts_t * yyg = (struct yyguts_t*)sb->scanner;
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va_list ap;
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va_start(ap, fmt);
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sql_parse_error(sb, yytext, fmt, ap);
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va_end(ap);
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}
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