bootscanner.c

PostgreSQL 8.1.4的源码 适用于Linux下的开源数据库系统

					pfree(newid);
					return(ID);
				}
	YY_BREAK
case 27:
YY_RULE_SETUP
#line 112 "bootscanner.l"
{
					char   *newid;
					Int_yytext[strlen(Int_yytext)-1] = '\0'; /* strip off quotes */
					newid = scanstr((char*)Int_yytext+1);
					Int_yylval.ival = EnterString(newid);
					pfree(newid);
					Int_yytext[strlen(Int_yytext)] = '"'; /* restore quotes */
					return(ID);
				}
	YY_BREAK
case 28:
#line 123 "bootscanner.l"
case 29:
#line 124 "bootscanner.l"
case 30:
YY_RULE_SETUP
#line 124 "bootscanner.l"
{
							Int_yylval.ival = EnterString((char*)Int_yytext);
							return(CONST_P);
						}
	YY_BREAK
case 31:
YY_RULE_SETUP
#line 129 "bootscanner.l"
{
					elog(ERROR, "syntax error at line %d: unexpected character \"%s\"", Int_yyline, Int_yytext);
				}
	YY_BREAK
case 32:
YY_RULE_SETUP
#line 135 "bootscanner.l"
YY_FATAL_ERROR( "flex scanner jammed" );
	YY_BREAK
#line 981 "lex.Int_yy.c"
case YY_STATE_EOF(INITIAL):
	Int_yyterminate();

	case YY_END_OF_BUFFER:
		{
		/* Amount of text matched not including the EOB char. */
		int Int_yy_amount_of_matched_text = (int) (Int_yy_cp - Int_yytext_ptr) - 1;

		/* Undo the effects of YY_DO_BEFORE_ACTION. */
		*Int_yy_cp = Int_yy_hold_char;
		YY_RESTORE_YY_MORE_OFFSET

		if ( Int_yy_current_buffer->Int_yy_buffer_status == YY_BUFFER_NEW )
			{
			/* We're scanning a new file or input source.  It's
			 * possible that this happened because the user
			 * just pointed Int_yyin at a new source and called
			 * Int_yylex().  If so, then we have to assure
			 * consistency between Int_yy_current_buffer and our
			 * globals.  Here is the right place to do so, because
			 * this is the first action (other than possibly a
			 * back-up) that will match for the new input source.
			 */
			Int_yy_n_chars = Int_yy_current_buffer->Int_yy_n_chars;
			Int_yy_current_buffer->Int_yy_input_file = Int_yyin;
			Int_yy_current_buffer->Int_yy_buffer_status = YY_BUFFER_NORMAL;
			}

		/* Note that here we test for Int_yy_c_buf_p "<=" to the position
		 * of the first EOB in the buffer, since Int_yy_c_buf_p will
		 * already have been incremented past the NUL character
		 * (since all states make transitions on EOB to the
		 * end-of-buffer state).  Contrast this with the test
		 * in input().
		 */
		if ( Int_yy_c_buf_p <= &Int_yy_current_buffer->Int_yy_ch_buf[Int_yy_n_chars] )
			{ /* This was really a NUL. */
			Int_yy_state_type Int_yy_next_state;

			Int_yy_c_buf_p = Int_yytext_ptr + Int_yy_amount_of_matched_text;

			Int_yy_current_state = Int_yy_get_previous_state();

			/* Okay, we're now positioned to make the NUL
			 * transition.  We couldn't have
			 * Int_yy_get_previous_state() go ahead and do it
			 * for us because it doesn't know how to deal
			 * with the possibility of jamming (and we don't
			 * want to build jamming into it because then it
			 * will run more slowly).
			 */

			Int_yy_next_state = Int_yy_try_NUL_trans( Int_yy_current_state );

			Int_yy_bp = Int_yytext_ptr + YY_MORE_ADJ;

			if ( Int_yy_next_state )
				{
				/* Consume the NUL. */
				Int_yy_cp = ++Int_yy_c_buf_p;
				Int_yy_current_state = Int_yy_next_state;
				goto Int_yy_match;
				}

			else
				{
				Int_yy_cp = Int_yy_c_buf_p;
				goto Int_yy_find_action;
				}
			}

		else switch ( Int_yy_get_next_buffer() )
			{
			case EOB_ACT_END_OF_FILE:
				{
				Int_yy_did_buffer_switch_on_eof = 0;

				if ( Int_yywrap() )
					{
					/* Note: because we've taken care in
					 * Int_yy_get_next_buffer() to have set up
					 * Int_yytext, we can now set up
					 * Int_yy_c_buf_p so that if some total
					 * hoser (like flex itself) wants to
					 * call the scanner after we return the
					 * YY_NULL, it'll still work - another
					 * YY_NULL will get returned.
					 */
					Int_yy_c_buf_p = Int_yytext_ptr + YY_MORE_ADJ;

					Int_yy_act = YY_STATE_EOF(YY_START);
					goto do_action;
					}

				else
					{
					if ( ! Int_yy_did_buffer_switch_on_eof )
						YY_NEW_FILE;
					}
				break;
				}

			case EOB_ACT_CONTINUE_SCAN:
				Int_yy_c_buf_p =
					Int_yytext_ptr + Int_yy_amount_of_matched_text;

				Int_yy_current_state = Int_yy_get_previous_state();

				Int_yy_cp = Int_yy_c_buf_p;
				Int_yy_bp = Int_yytext_ptr + YY_MORE_ADJ;
				goto Int_yy_match;

			case EOB_ACT_LAST_MATCH:
				Int_yy_c_buf_p =
				&Int_yy_current_buffer->Int_yy_ch_buf[Int_yy_n_chars];

				Int_yy_current_state = Int_yy_get_previous_state();

				Int_yy_cp = Int_yy_c_buf_p;
				Int_yy_bp = Int_yytext_ptr + YY_MORE_ADJ;
				goto Int_yy_find_action;
			}
		break;
		}

	default:
		YY_FATAL_ERROR(
			"fatal flex scanner internal error--no action found" );
	} /* end of action switch */
		} /* end of scanning one token */
	} /* end of Int_yylex */


/* Int_yy_get_next_buffer - try to read in a new buffer
 *
 * Returns a code representing an action:
 *	EOB_ACT_LAST_MATCH -
 *	EOB_ACT_CONTINUE_SCAN - continue scanning from current position
 *	EOB_ACT_END_OF_FILE - end of file
 */

static int Int_yy_get_next_buffer()
	{
	register char *dest = Int_yy_current_buffer->Int_yy_ch_buf;
	register char *source = Int_yytext_ptr;
	register int number_to_move, i;
	int ret_val;

	if ( Int_yy_c_buf_p > &Int_yy_current_buffer->Int_yy_ch_buf[Int_yy_n_chars + 1] )
		YY_FATAL_ERROR(
		"fatal flex scanner internal error--end of buffer missed" );

	if ( Int_yy_current_buffer->Int_yy_fill_buffer == 0 )
		{ /* Don't try to fill the buffer, so this is an EOF. */
		if ( Int_yy_c_buf_p - Int_yytext_ptr - YY_MORE_ADJ == 1 )
			{
			/* We matched a single character, the EOB, so
			 * treat this as a final EOF.
			 */
			return EOB_ACT_END_OF_FILE;
			}

		else
			{
			/* We matched some text prior to the EOB, first
			 * process it.
			 */
			return EOB_ACT_LAST_MATCH;
			}
		}

	/* Try to read more data. */

	/* First move last chars to start of buffer. */
	number_to_move = (int) (Int_yy_c_buf_p - Int_yytext_ptr) - 1;

	for ( i = 0; i < number_to_move; ++i )
		*(dest++) = *(source++);

	if ( Int_yy_current_buffer->Int_yy_buffer_status == YY_BUFFER_EOF_PENDING )
		/* don't do the read, it's not guaranteed to return an EOF,
		 * just force an EOF
		 */
		Int_yy_current_buffer->Int_yy_n_chars = Int_yy_n_chars = 0;

	else
		{
		int num_to_read =
			Int_yy_current_buffer->Int_yy_buf_size - number_to_move - 1;

		while ( num_to_read <= 0 )
			{ /* Not enough room in the buffer - grow it. */
#ifdef YY_USES_REJECT
			YY_FATAL_ERROR(
"input buffer overflow, can't enlarge buffer because scanner uses REJECT" );
#else

			/* just a shorter name for the current buffer */
			YY_BUFFER_STATE b = Int_yy_current_buffer;

			int Int_yy_c_buf_p_offset =
				(int) (Int_yy_c_buf_p - b->Int_yy_ch_buf);

			if ( b->Int_yy_is_our_buffer )
				{
				int new_size = b->Int_yy_buf_size * 2;

				if ( new_size <= 0 )
					b->Int_yy_buf_size += b->Int_yy_buf_size / 8;
				else
					b->Int_yy_buf_size *= 2;

				b->Int_yy_ch_buf = (char *)
					/* Include room in for 2 EOB chars. */
					Int_yy_flex_realloc( (void *) b->Int_yy_ch_buf,
							 b->Int_yy_buf_size + 2 );
				}
			else
				/* Can't grow it, we don't own it. */
				b->Int_yy_ch_buf = 0;

			if ( ! b->Int_yy_ch_buf )
				YY_FATAL_ERROR(
				"fatal error - scanner input buffer overflow" );

			Int_yy_c_buf_p = &b->Int_yy_ch_buf[Int_yy_c_buf_p_offset];

			num_to_read = Int_yy_current_buffer->Int_yy_buf_size -
						number_to_move - 1;
#endif
			}

		if ( num_to_read > YY_READ_BUF_SIZE )
			num_to_read = YY_READ_BUF_SIZE;

		/* Read in more data. */
		YY_INPUT( (&Int_yy_current_buffer->Int_yy_ch_buf[number_to_move]),
			Int_yy_n_chars, num_to_read );

		Int_yy_current_buffer->Int_yy_n_chars = Int_yy_n_chars;
		}

	if ( Int_yy_n_chars == 0 )
		{
		if ( number_to_move == YY_MORE_ADJ )
			{
			ret_val = EOB_ACT_END_OF_FILE;
			Int_yyrestart( Int_yyin );
			}

		else
			{
			ret_val = EOB_ACT_LAST_MATCH;
			Int_yy_current_buffer->Int_yy_buffer_status =
				YY_BUFFER_EOF_PENDING;
			}
		}

	else
		ret_val = EOB_ACT_CONTINUE_SCAN;

	Int_yy_n_chars += number_to_move;
	Int_yy_current_buffer->Int_yy_ch_buf[Int_yy_n_chars] = YY_END_OF_BUFFER_CHAR;
	Int_yy_current_buffer->Int_yy_ch_buf[Int_yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;

	Int_yytext_ptr = &Int_yy_current_buffer->Int_yy_ch_buf[0];

	return ret_val;
	}


/* Int_yy_get_previous_state - get the state just before the EOB char was reached */

static Int_yy_state_type Int_yy_get_previous_state()
	{
	register Int_yy_state_type Int_yy_current_state;
	register char *Int_yy_cp;

	Int_yy_current_state = Int_yy_start;
	Int_yy_current_state += YY_AT_BOL();

	for ( Int_yy_cp = Int_yytext_ptr + YY_MORE_ADJ; Int_yy_cp < Int_yy_c_buf_p; ++Int_yy_cp )
		{
		register YY_CHAR Int_yy_c = (*Int_yy_cp ? Int_yy_ec[YY_SC_TO_UI(*Int_yy_cp)] : 1);
		if ( Int_yy_accept[Int_yy_current_state] )
			{
			Int_yy_last_accepting_state = Int_yy_current_state;
			Int_yy_last_accepting_cpos = Int_yy_cp;
			}
		while ( Int_yy_chk[Int_yy_base[Int_yy_current_state] + Int_yy_c] != Int_yy_current_state )
			{
			Int_yy_current_state = (int) Int_yy_def[Int_yy_current_state];
			if ( Int_yy_current_state >= 147 )
				Int_yy_c = Int_yy_meta[(unsigned int) Int_yy_c];
			}
		Int_yy_current_state = Int_yy_nxt[Int_yy_base[Int_yy_current_state] + (unsigned int) Int_yy_c];
		}

	return Int_yy_current_state;
	}


/* Int_yy_try_NUL_trans - try to make a transition on the NUL character
 *
 * synopsis
 *	next_state = Int_yy_try_NUL_trans( current_state );
 */

#ifdef YY_USE_PROTOS
static Int_yy_state_type Int_yy_try_NUL_trans( Int_yy_state_type Int_yy_current_state )
#else
static Int_yy_state_type Int_yy_try_NUL_trans( Int_yy_current_state )
Int_yy_state_type Int_yy_current_state;
#endif
	{
	register int Int_yy_is_jam;
	register char *Int_yy_cp = Int_yy_c_buf_p;

	register YY_CHAR Int_yy_c = 1;
	if ( Int_yy_accept[Int_yy_current_state] )
		{
		Int_yy_last_accepting_state = Int_yy_current_state;
		Int_yy_last_accepting_cpos = Int_yy_cp;
		}
	while ( Int_yy_chk[Int_yy_base[Int_yy_current_state] + Int_yy_c] != Int_yy_current_state )
		{
		Int_yy_current_state = (int) Int_yy_def[Int_yy_current_state];
		if ( Int_yy_current_state >= 147 )
			Int_yy_c = Int_yy_meta[(unsigned int) Int_yy_c];
		}
	Int_yy_current_state = Int_yy_nxt[Int_yy_base[Int_yy_current_state] + (unsigned int) Int_yy_c];
	Int_yy_is_jam = (Int_yy_current_state == 146);

	return Int_yy_is_jam ? 0 : Int_yy_current_state;
	}


#ifndef YY_NO_UNPUT
#ifdef YY_USE_PROTOS
static void Int_yyunput( int c, register char *Int_yy_bp )
#else
static void Int_yyunput( c, Int_yy_bp )
int c;
register char *Int_yy_bp;
#endif
	{
	register char *Int_yy_cp = Int_yy_c_buf_p;

	/* undo effects of setting up Int_yytext */
	*Int_yy_cp = Int_yy_hold_char;

	if ( Int_yy_cp < Int_yy_current_buffer->Int_yy_ch_buf + 2 )
		{ /* need to shift things up to make room */
		/* +2 for EOB chars. */
		register int number_to_move = Int_yy_n_chars + 2;
		register char *dest = &Int_yy_current_buffer->Int_yy_ch_buf[
					Int_yy_current_buffer->Int_yy_buf_size + 2];
		register char *source =
				&Int_yy_current_buffer->Int_yy_ch_buf[number_to_move];

		while ( source > Int_yy_current_buffer->Int_yy_ch_buf )
			*--dest = *--source;

		Int_yy_cp += (int) (dest - source);
		Int_yy_bp += (int) (dest - source);
		Int_yy_current_buffer->Int_yy_n_chars =
			Int_yy_n_chars = Int_yy_current_buffer->Int_yy_buf_size;

		if ( Int_yy_cp < Int_yy_current_buffer->Int_yy_ch_buf + 2 )
			YY_FATAL_ERROR( "flex scanner push-back overflow" );
		}

	*--Int_yy_cp = (char) c;


	Int_yytext_ptr = Int_yy_bp;
	Int_yy_hold_char = *Int_yy_cp;
	Int_yy_c_buf_p = Int_yy_cp;
	}
#endif	/* ifndef YY_NO_UNPUT */


#ifdef __cplusplus
static int Int_yyinput()
#else
static int input()
#endif
	{
	int c;

	*Int_yy_c_buf_p = Int_yy_hold_char;

	if ( *Int_yy_c_buf_p == YY_END_OF_BUFFER_CHAR )
		{
		/* Int_yy_c_buf_p now points to the character we want to return.
		 * If this occurs *before* the EOB characters, then it's a
		 * valid NUL; if not, then we've hit the end of the buffer.
		 */
		if ( Int_yy_c_buf_p < &Int_yy_current_buffer->Int_yy_ch_buf[Int_yy_n_chars] )
			/* This was really a NUL. */
			*Int_yy_c_buf_p = '\0';

		else
			{ /* need more input */
			int offset = Int_yy_c_buf_p - Int_yytext_ptr;
			++Int_yy_c_buf_p;

			switch ( Int_yy_get_next_buffer() )
				{
				case EOB_ACT_LAST_MATCH:
					/* This happens because Int_yy_g_n_b()
					 * sees that we've accumulated a
					 * token and flags that we need to
					 * try matching the token before
					 * proceeding.  But for input(),
					 * there's no matching to consider.
					 * So convert the EOB_ACT_LAST_MATCH
					 * to EOB_ACT_END_OF_FILE.
					 */

					/* Reset buffer status. */
					Int_yyrestart( Int_yyin );

					/* fall through */

				case EOB_ACT_END_OF_FILE:
					{