pgc.c

关系型数据库 Postgresql 6.5.2

#define xdc 9

#define xh 10

#define xm 11

#define xq 12

/* Binary number
 */
/* Hexadecimal number
 */
/* Extended quote
 * xqdouble implements SQL92 embedded quote
 * xqcat allows strings to cross input lines
 */
/* Delimited quote
 * Allows embedded spaces and other special characters into identifiers.
 */
/* Comments
 * Ignored by the scanner and parser.
 */
/*
real			[\-]?(((({digit}*\.{digit}+)|({digit}+\.{digit}*))([Ee][-+]?{digit}+)?)|({digit}+[Ee][-+]?{digit}+))
*/
/* some stuff needed for ecpg */
/* DO NOT PUT ANY COMMENTS IN THE FOLLOWING SECTION.
 * AT&T lex does not properly handle C-style comments in this second lex block.
 * So, put comments here. tgl - 1997-09-08
 *
 * Quoted strings must allow some special characters such as single-quote
 *  and newline.
 * Embedded single-quotes are implemented both in the SQL/92-standard
 *  style of two adjacent single quotes "''" and in the Postgres/Java style
 *  of escaped-quote "\'".
 * Other embedded escaped characters are matched explicitly and the leading
 *  backslash is dropped from the string. - thomas 1997-09-24
 */
#line 904 "lex.yy.c"

/* Macros after this point can all be overridden by user definitions in
 * section 1.
 */

#ifndef YY_SKIP_YYWRAP
#ifdef __cplusplus
extern "C" int yywrap YY_PROTO(( void ));
#else
extern int yywrap YY_PROTO(( void ));
#endif
#endif

#ifndef YY_NO_UNPUT
static void yyunput YY_PROTO(( int c, char *buf_ptr ));
#endif

#ifndef yytext_ptr
static void yy_flex_strncpy YY_PROTO(( char *, yyconst char *, int ));
#endif

#ifdef YY_NEED_STRLEN
static int yy_flex_strlen YY_PROTO(( yyconst char * ));
#endif

#ifndef YY_NO_INPUT
#ifdef __cplusplus
static int yyinput YY_PROTO(( void ));
#else
static int input YY_PROTO(( void ));
#endif
#endif

#if YY_STACK_USED
static int yy_start_stack_ptr = 0;
static int yy_start_stack_depth = 0;
static int *yy_start_stack = 0;
#ifndef YY_NO_PUSH_STATE
static void yy_push_state YY_PROTO(( int new_state ));
#endif
#ifndef YY_NO_POP_STATE
static void yy_pop_state YY_PROTO(( void ));
#endif
#ifndef YY_NO_TOP_STATE
static int yy_top_state YY_PROTO(( void ));
#endif

#else
#define YY_NO_PUSH_STATE 1
#define YY_NO_POP_STATE 1
#define YY_NO_TOP_STATE 1
#endif

#ifdef YY_MALLOC_DECL
YY_MALLOC_DECL
#else
#if __STDC__
#ifndef __cplusplus
#include <stdlib.h>
#endif
#else
/* Just try to get by without declaring the routines.  This will fail
 * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int)
 * or sizeof(void*) != sizeof(int).
 */
#endif
#endif

/* Amount of stuff to slurp up with each read. */
#ifndef YY_READ_BUF_SIZE
#define YY_READ_BUF_SIZE 8192
#endif

/* Copy whatever the last rule matched to the standard output. */

#ifndef ECHO
/* This used to be an fputs(), but since the string might contain NUL's,
 * we now use fwrite().
 */
#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
#endif

/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
 * is returned in "result".
 */
#ifndef YY_INPUT
#define YY_INPUT(buf,result,max_size) \
	if ( yy_current_buffer->yy_is_interactive ) \
		{ \
		int c = '*', n; \
		for ( n = 0; n < max_size && \
			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
			buf[n] = (char) c; \
		if ( c == '\n' ) \
			buf[n++] = (char) c; \
		if ( c == EOF && ferror( yyin ) ) \
			YY_FATAL_ERROR( "input in flex scanner failed" ); \
		result = n; \
		} \
	else if ( ((result = fread( buf, 1, max_size, yyin )) == 0) \
		  && ferror( yyin ) ) \
		YY_FATAL_ERROR( "input in flex scanner failed" );
#endif

/* No semi-colon after return; correct usage is to write "yyterminate();" -
 * we don't want an extra ';' after the "return" because that will cause
 * some compilers to complain about unreachable statements.
 */
#ifndef yyterminate
#define yyterminate() return YY_NULL
#endif

/* Number of entries by which start-condition stack grows. */
#ifndef YY_START_STACK_INCR
#define YY_START_STACK_INCR 25
#endif

/* Report a fatal error. */
#ifndef YY_FATAL_ERROR
#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
#endif

/* Default declaration of generated scanner - a define so the user can
 * easily add parameters.
 */
#ifndef YY_DECL
#define YY_DECL int yylex YY_PROTO(( void ))
#endif

/* Code executed at the beginning of each rule, after yytext and yyleng
 * have been set up.
 */
#ifndef YY_USER_ACTION
#define YY_USER_ACTION
#endif

/* Code executed at the end of each rule. */
#ifndef YY_BREAK
#define YY_BREAK break;
#endif

#define YY_RULE_SETUP \
	YY_USER_ACTION

YY_DECL
	{
	register yy_state_type yy_current_state;
	register char *yy_cp, *yy_bp;
	register int yy_act;

#line 186 "pgc.l"

#line 1057 "lex.yy.c"

	if ( yy_init )
		{
		yy_init = 0;

#ifdef YY_USER_INIT
		YY_USER_INIT;
#endif

		if ( ! yy_start )
			yy_start = 1;	/* first start state */

		if ( ! yyin )
			yyin = stdin;

		if ( ! yyout )
			yyout = stdout;

		if ( ! yy_current_buffer )
			yy_current_buffer =
				yy_create_buffer( yyin, YY_BUF_SIZE );

		yy_load_buffer_state();
		}

	while ( 1 )		/* loops until end-of-file is reached */
		{
		yy_cp = yy_c_buf_p;

		/* Support of yytext. */
		*yy_cp = yy_hold_char;

		/* yy_bp points to the position in yy_ch_buf of the start of
		 * the current run.
		 */
		yy_bp = yy_cp;

		yy_current_state = yy_start;
		yy_state_ptr = yy_state_buf;
		*yy_state_ptr++ = yy_current_state;
yy_match:
		do
			{
			register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
			while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
				{
				yy_current_state = (int) yy_def[yy_current_state];
				if ( yy_current_state >= 272 )
					yy_c = yy_meta[(unsigned int) yy_c];
				}
			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
			*yy_state_ptr++ = yy_current_state;
			++yy_cp;
			}
		while ( yy_base[yy_current_state] != 1138 );

yy_find_action:
		yy_current_state = *--yy_state_ptr;
		yy_lp = yy_accept[yy_current_state];
find_rule: /* we branch to this label when backing up */
		for ( ; ; ) /* until we find what rule we matched */
			{
			if ( yy_lp && yy_lp < yy_accept[yy_current_state + 1] )
				{
				yy_act = yy_acclist[yy_lp];
				if ( yy_act & YY_TRAILING_HEAD_MASK ||
				     yy_looking_for_trail_begin )
					{
					if ( yy_act == yy_looking_for_trail_begin )
						{
						yy_looking_for_trail_begin = 0;
						yy_act &= ~YY_TRAILING_HEAD_MASK;
						break;
						}
					}
				else if ( yy_act & YY_TRAILING_MASK )
					{
					yy_looking_for_trail_begin = yy_act & ~YY_TRAILING_MASK;
					yy_looking_for_trail_begin |= YY_TRAILING_HEAD_MASK;
					yy_full_match = yy_cp;
					yy_full_state = yy_state_ptr;
					yy_full_lp = yy_lp;
					}
				else
					{
					yy_full_match = yy_cp;
					yy_full_state = yy_state_ptr;
					yy_full_lp = yy_lp;
					break;
					}
				++yy_lp;
				goto find_rule;
				}
			--yy_cp;
			yy_current_state = *--yy_state_ptr;
			yy_lp = yy_accept[yy_current_state];
			}

		YY_DO_BEFORE_ACTION;

		if ( yy_act != YY_END_OF_BUFFER )
			{
			int yyl;
			for ( yyl = 0; yyl < yyleng; ++yyl )
				if ( yytext[yyl] == '\n' )
					++yylineno;
			}

do_action:	/* This label is used only to access EOF actions. */


		switch ( yy_act )
	{ /* beginning of action switch */
case 1:
YY_RULE_SETUP
#line 187 "pgc.l"
{ /* ignore */ }
	YY_BREAK
case 2:
YY_RULE_SETUP
#line 189 "pgc.l"
{ ECHO; }
	YY_BREAK
case 3:
YY_RULE_SETUP
#line 191 "pgc.l"
{ ECHO; }
	YY_BREAK
case 4:
YY_RULE_SETUP
#line 192 "pgc.l"
{
				before_comment = YYSTATE;
				ECHO;
	 			BEGIN(xc);
			}
	YY_BREAK
case 5:
YY_RULE_SETUP
#line 198 "pgc.l"
{ ECHO; BEGIN(before_comment); }
	YY_BREAK
case 6:
YY_RULE_SETUP
#line 200 "pgc.l"
{ ECHO; }
	YY_BREAK
case 7:
YY_RULE_SETUP
#line 202 "pgc.l"
{
					BEGIN(xb);
					llen = 0;
					*literal = '\0';
				}
	YY_BREAK
case 8:
YY_RULE_SETUP
#line 207 "pgc.l"
{
					char* endptr;

					BEGIN(SQL);
					errno = 0;
					yylval.ival = strtol((char *)literal,&endptr,2);
					if (*endptr != '\0' || errno == ERANGE)
						yyerror("ERROR: Bad binary integer input!");
					return ICONST;
				}
	YY_BREAK
case 9:
#line 218 "pgc.l"
case 10:
YY_RULE_SETUP
#line 218 "pgc.l"
{
					if ((llen+yyleng) > (MAX_PARSE_BUFFER - 1))
						yyerror("ERROR: quoted string parse buffer exceeded");
					memcpy(literal+llen, yytext, yyleng+1);
					llen += yyleng;
				}
	YY_BREAK
case 11:
#line 225 "pgc.l"
case 12:
YY_RULE_SETUP
#line 225 "pgc.l"
{
				}
	YY_BREAK
case 13:
YY_RULE_SETUP
#line 228 "pgc.l"
{
					BEGIN(xh);
					llen = 0;
					*literal = '\0';
				}
	YY_BREAK
case 14:
YY_RULE_SETUP
#line 233 "pgc.l"
{
					char* endptr;

					BEGIN(SQL);
					errno = 0;
					yylval.ival = strtol((char *)literal,&endptr,16);
					if (*endptr != '\0' || errno == ERANGE)
						yyerror("ERROR: Bad hexadecimal integer input");
					return ICONST;
				}
	YY_BREAK
case 15:
YY_RULE_SETUP
#line 244 "pgc.l"
{
					BEGIN(xq);
					llen = 0;
					*literal = '\0';
				}
	YY_BREAK
case 16:
YY_RULE_SETUP
#line 249 "pgc.l"
{
					BEGIN(SQL);
					/* yylval.str = mm_strdup(scanstr(literal));*/
					yylval.str = mm_strdup(literal);
					return SCONST;
				}
	YY_BREAK
case 17:
#line 256 "pgc.l"
case 18:
#line 257 "pgc.l"
case 19:
YY_RULE_SETUP
#line 257 "pgc.l"
{