pl_scan.c

来自「postgresql8.3.4源码,开源数据库」· C语言 代码 · 共 2,225 行 · 第 1/5 页

#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 \
	if ( yyleng > 0 ) \
		yy_current_buffer->yy_at_bol = \
				(yytext[yyleng - 1] == '\n'); \
	YY_USER_ACTION

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

#line 81 "scan.l"

    /* ----------
     * Local variables in scanner to remember where
     * a string or comment started
     * ----------
     */
    int	start_lineno = 0;
	char *start_charpos = NULL;

    /* ----------
     * Reset the state when entering the scanner
     * ----------
     */
    BEGIN(INITIAL);
    plpgsql_SpaceScanned = false;

    /* ----------
     * On the first call to a new source report the
     * function's type (T_FUNCTION or T_TRIGGER)
     * ----------
     */
	if (!scanner_typereported)
	{
		scanner_typereported = true;
		return scanner_functype;
	}

    /* ----------
     * The keyword rules
     * ----------
     */
#line 1011 "pl_scan.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_current_state += YY_AT_BOL();
yy_match:
		do
			{
			register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
			if ( yy_accept[yy_current_state] )
				{
				yy_last_accepting_state = yy_current_state;
				yy_last_accepting_cpos = 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 >= 373 )
					yy_c = yy_meta[(unsigned int) yy_c];
				}
			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
			++yy_cp;
			}
		while ( yy_base[yy_current_state] != 1137 );

yy_find_action:
		yy_act = yy_accept[yy_current_state];
		if ( yy_act == 0 )
			{ /* have to back up */
			yy_cp = yy_last_accepting_cpos;
			yy_current_state = yy_last_accepting_state;
			yy_act = yy_accept[yy_current_state];
			}

		YY_DO_BEFORE_ACTION;


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


		switch ( yy_act )
	{ /* beginning of action switch */
			case 0: /* must back up */
			/* undo the effects of YY_DO_BEFORE_ACTION */
			*yy_cp = yy_hold_char;
			yy_cp = yy_last_accepting_cpos;
			yy_current_state = yy_last_accepting_state;
			goto yy_find_action;

case 1:
YY_RULE_SETUP
#line 112 "scan.l"
{ return K_ASSIGN;			}
	YY_BREAK
case 2:
YY_RULE_SETUP
#line 113 "scan.l"
{ return K_ASSIGN;			}
	YY_BREAK
case 3:
YY_RULE_SETUP
#line 114 "scan.l"
{ return K_DOTDOT;			}
	YY_BREAK
case 4:
YY_RULE_SETUP
#line 115 "scan.l"
{ return K_ALIAS;			}
	YY_BREAK
case 5:
YY_RULE_SETUP
#line 116 "scan.l"
{ return K_BEGIN;			}
	YY_BREAK
case 6:
YY_RULE_SETUP
#line 117 "scan.l"
{ return K_BY;   			}
	YY_BREAK
case 7:
YY_RULE_SETUP
#line 118 "scan.l"
{ return K_CLOSE;			}
	YY_BREAK
case 8:
YY_RULE_SETUP
#line 119 "scan.l"
{ return K_CONSTANT;		}
	YY_BREAK
case 9:
YY_RULE_SETUP
#line 120 "scan.l"
{ return K_CONTINUE;		}
	YY_BREAK
case 10:
YY_RULE_SETUP
#line 121 "scan.l"
{ return K_CURSOR;			}
	YY_BREAK
case 11:
YY_RULE_SETUP
#line 122 "scan.l"
{ return K_DEBUG;			}
	YY_BREAK
case 12:
YY_RULE_SETUP
#line 123 "scan.l"
{ return K_DECLARE;			}
	YY_BREAK
case 13:
YY_RULE_SETUP
#line 124 "scan.l"
{ return K_DEFAULT;			}
	YY_BREAK
case 14:
YY_RULE_SETUP
#line 125 "scan.l"
{ return K_DIAGNOSTICS;		}
	YY_BREAK
case 15:
YY_RULE_SETUP
#line 126 "scan.l"
{ return K_ELSE;			}
	YY_BREAK
case 16:
YY_RULE_SETUP
#line 127 "scan.l"
{ return K_ELSIF;			}
	YY_BREAK
case 17:
YY_RULE_SETUP
#line 128 "scan.l"
{ return K_ELSIF;			}
	YY_BREAK
case 18:
YY_RULE_SETUP
#line 129 "scan.l"
{ return K_END;				}
	YY_BREAK
case 19:
YY_RULE_SETUP
#line 130 "scan.l"
{ return K_EXCEPTION;		}
	YY_BREAK
case 20:
YY_RULE_SETUP
#line 131 "scan.l"
{ return K_EXECUTE;			}
	YY_BREAK
case 21:
YY_RULE_SETUP
#line 132 "scan.l"
{ return K_EXIT;			}
	YY_BREAK
case 22:
YY_RULE_SETUP
#line 133 "scan.l"
{ return K_FETCH;			}
	YY_BREAK
case 23:
YY_RULE_SETUP
#line 134 "scan.l"
{ return K_FOR;				}
	YY_BREAK
case 24:
YY_RULE_SETUP
#line 135 "scan.l"
{ return K_FROM;			}
	YY_BREAK
case 25:
YY_RULE_SETUP
#line 136 "scan.l"
{ return K_GET;				}
	YY_BREAK
case 26:
YY_RULE_SETUP
#line 137 "scan.l"
{ return K_IF;				}
	YY_BREAK
case 27:
YY_RULE_SETUP
#line 138 "scan.l"
{ return K_IN;				}
	YY_BREAK
case 28:
YY_RULE_SETUP
#line 139 "scan.l"
{ return K_INFO;			}
	YY_BREAK
case 29:
YY_RULE_SETUP
#line 140 "scan.l"
{ return K_INSERT;			}
	YY_BREAK
case 30:
YY_RULE_SETUP
#line 141 "scan.l"
{ return K_INTO;			}
	YY_BREAK
case 31:
YY_RULE_SETUP
#line 142 "scan.l"
{ return K_IS;				}
	YY_BREAK
case 32:
YY_RULE_SETUP
#line 143 "scan.l"
{ return K_LOG;				}
	YY_BREAK
case 33:
YY_RULE_SETUP
#line 144 "scan.l"
{ return K_LOOP;			}
	YY_BREAK
case 34:
YY_RULE_SETUP
#line 145 "scan.l"
{ return K_MOVE;			}
	YY_BREAK
case 35:
YY_RULE_SETUP
#line 146 "scan.l"
{ return K_NOSCROLL;		}
	YY_BREAK
case 36:
YY_RULE_SETUP
#line 147 "scan.l"
{ return K_NOT;				}
	YY_BREAK
case 37:
YY_RULE_SETUP
#line 148 "scan.l"
{ return K_NOTICE;			}
	YY_BREAK
case 38:
YY_RULE_SETUP
#line 149 "scan.l"
{ return K_NULL;			}
	YY_BREAK
case 39:
YY_RULE_SETUP
#line 150 "scan.l"
{ return K_OPEN;			}
	YY_BREAK
case 40:
YY_RULE_SETUP
#line 151 "scan.l"
{ return K_OR;				}
	YY_BREAK
case 41:
YY_RULE_SETUP
#line 152 "scan.l"
{ return K_PERFORM;			}
	YY_BREAK
case 42:
YY_RULE_SETUP
#line 153 "scan.l"
{ return K_RAISE;			}
	YY_BREAK
case 43:
YY_RULE_SETUP
#line 154 "scan.l"
{ return K_RENAME;			}
	YY_BREAK
case 44:
YY_RULE_SETUP
#line 155 "scan.l"
{ return K_RESULT_OID;		}
	YY_BREAK
case 45:
YY_RULE_SETUP
#line 156 "scan.l"
{ return K_RETURN;			}
	YY_BREAK
case 46:
YY_RULE_SETUP
#line 157 "scan.l"
{ return K_REVERSE;			}
	YY_BREAK
case 47:
YY_RULE_SETUP
#line 158 "scan.l"
{ return K_ROW_COUNT;		}
	YY_BREAK
case 48:
YY_RULE_SETUP
#line 159 "scan.l"
{ return K_SCROLL;			}
	YY_BREAK
case 49:
YY_RULE_SETUP