scan-gram.c

bison 2.0 主要可以用来做语法分析用的

#define yy_create_buffer gram__create_buffer
#define yy_delete_buffer gram__delete_buffer
#define yy_scan_buffer gram__scan_buffer
#define yy_scan_string gram__scan_string
#define yy_scan_bytes gram__scan_bytes
#define yy_flex_debug gram__flex_debug
#define yy_init_buffer gram__init_buffer
#define yy_flush_buffer gram__flush_buffer
#define yy_load_buffer_state gram__load_buffer_state
#define yy_switch_to_buffer gram__switch_to_buffer
#define yyin gram_in
#define yyleng gram_leng
#define yylex gram_lex
#define yyout gram_out
#define yyrestart gram_restart
#define yytext gram_text

#line 19 "scan-gram.c"
/* A lexical scanner generated by flex */

/* Scanner skeleton version:
 * $Header: /home/daffy/u0/vern/flex/RCS/flex.skl,v 2.91 96/09/10 16:58:48 vern Exp $
 */

#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION 2
#define YY_FLEX_MINOR_VERSION 5

#include <stdio.h>
#include <errno.h>

/* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
#ifdef c_plusplus
#ifndef __cplusplus
#define __cplusplus
#endif
#endif


#ifdef __cplusplus

#include <stdlib.h>
#ifndef _WIN32
#include <unistd.h>
#else
#ifndef YY_ALWAYS_INTERACTIVE
#ifndef YY_NEVER_INTERACTIVE
extern int isatty YY_PROTO(( int ));
#endif
#endif
#endif

/* Use prototypes in function declarations. */
#define YY_USE_PROTOS

/* The "const" storage-class-modifier is valid. */
#define YY_USE_CONST

#else	/* ! __cplusplus */

#if __STDC__

#define YY_USE_PROTOS
#define YY_USE_CONST

#endif	/* __STDC__ */
#endif	/* ! __cplusplus */

#ifdef __TURBOC__
 #pragma warn -rch
 #pragma warn -use
#include <io.h>
#include <stdlib.h>
#define YY_USE_CONST
#define YY_USE_PROTOS
#endif

#ifdef YY_USE_CONST
#define yyconst const
#else
#define yyconst
#endif


#ifdef YY_USE_PROTOS
#define YY_PROTO(proto) proto
#else
#define YY_PROTO(proto) ()
#endif

/* Returned upon end-of-file. */
#define YY_NULL 0

/* Promotes a possibly negative, possibly signed char to an unsigned
 * integer for use as an array index.  If the signed char is negative,
 * we want to instead treat it as an 8-bit unsigned char, hence the
 * double cast.
 */
#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)

/* Enter a start condition.  This macro really ought to take a parameter,
 * but we do it the disgusting crufty way forced on us by the ()-less
 * definition of BEGIN.
 */
#define BEGIN yy_start = 1 + 2 *

/* Translate the current start state into a value that can be later handed
 * to BEGIN to return to the state.  The YYSTATE alias is for lex
 * compatibility.
 */
#define YY_START ((yy_start - 1) / 2)
#define YYSTATE YY_START

/* Action number for EOF rule of a given start state. */
#define YY_STATE_EOF(state) (YY_END_OF_BUFFER + state + 1)

/* Special action meaning "start processing a new file". */
#define YY_NEW_FILE yyrestart( yyin )

#define YY_END_OF_BUFFER_CHAR 0

/* Size of default input buffer. */
#define YY_BUF_SIZE 16384

typedef struct yy_buffer_state *YY_BUFFER_STATE;

extern int yyleng;
extern FILE *yyin, *yyout;

#define EOB_ACT_CONTINUE_SCAN 0
#define EOB_ACT_END_OF_FILE 1
#define EOB_ACT_LAST_MATCH 2

/* The funky do-while in the following #define is used to turn the definition
 * int a single C statement (which needs a semi-colon terminator).  This
 * avoids problems with code like:
 *
 * 	if ( condition_holds )
 *		yyless( 5 );
 *	else
 *		do_something_else();
 *
 * Prior to using the do-while the compiler would get upset at the
 * "else" because it interpreted the "if" statement as being all
 * done when it reached the ';' after the yyless() call.
 */

/* Return all but the first 'n' matched characters back to the input stream. */

#define yyless(n) \
	do \
		{ \
		/* Undo effects of setting up yytext. */ \
		*yy_cp = yy_hold_char; \
		YY_RESTORE_YY_MORE_OFFSET \
		yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \
		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
		} \
	while ( 0 )

#define unput(c) yyunput( c, yytext_ptr )

/* The following is because we cannot portably get our hands on size_t
 * (without autoconf's help, which isn't available because we want
 * flex-generated scanners to compile on their own).
 */
typedef unsigned int yy_size_t;


struct yy_buffer_state
	{
	FILE *yy_input_file;

	char *yy_ch_buf;		/* input buffer */
	char *yy_buf_pos;		/* current position in input buffer */

	/* Size of input buffer in bytes, not including room for EOB
	 * characters.
	 */
	yy_size_t yy_buf_size;

	/* Number of characters read into yy_ch_buf, not including EOB
	 * characters.
	 */
	int yy_n_chars;

	/* Whether we "own" the buffer - i.e., we know we created it,
	 * and can realloc() it to grow it, and should free() it to
	 * delete it.
	 */
	int yy_is_our_buffer;

	/* Whether this is an "interactive" input source; if so, and
	 * if we're using stdio for input, then we want to use getc()
	 * instead of fread(), to make sure we stop fetching input after
	 * each newline.
	 */
	int yy_is_interactive;

	/* Whether we're considered to be at the beginning of a line.
	 * If so, '^' rules will be active on the next match, otherwise
	 * not.
	 */
	int yy_at_bol;

	/* Whether to try to fill the input buffer when we reach the
	 * end of it.
	 */
	int yy_fill_buffer;

	int yy_buffer_status;
#define YY_BUFFER_NEW 0
#define YY_BUFFER_NORMAL 1
	/* When an EOF's been seen but there's still some text to process
	 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
	 * shouldn't try reading from the input source any more.  We might
	 * still have a bunch of tokens to match, though, because of
	 * possible backing-up.
	 *
	 * When we actually see the EOF, we change the status to "new"
	 * (via yyrestart()), so that the user can continue scanning by
	 * just pointing yyin at a new input file.
	 */
#define YY_BUFFER_EOF_PENDING 2
	};

static YY_BUFFER_STATE yy_current_buffer = 0;

/* We provide macros for accessing buffer states in case in the
 * future we want to put the buffer states in a more general
 * "scanner state".
 */
#define YY_CURRENT_BUFFER yy_current_buffer


/* yy_hold_char holds the character lost when yytext is formed. */
static char yy_hold_char;

static int yy_n_chars;		/* number of characters read into yy_ch_buf */


int yyleng;

/* Points to current character in buffer. */
static char *yy_c_buf_p = (char *) 0;
static int yy_init = 1;		/* whether we need to initialize */
static int yy_start = 0;	/* start state number */

/* Flag which is used to allow yywrap()'s to do buffer switches
 * instead of setting up a fresh yyin.  A bit of a hack ...
 */
static int yy_did_buffer_switch_on_eof;

void yyrestart YY_PROTO(( FILE *input_file ));

void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
void yy_load_buffer_state YY_PROTO(( void ));
YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size ));
void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));
void yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b ));
#define YY_FLUSH_BUFFER yy_flush_buffer( yy_current_buffer )

YY_BUFFER_STATE yy_scan_buffer YY_PROTO(( char *base, yy_size_t size ));
YY_BUFFER_STATE yy_scan_string YY_PROTO(( yyconst char *yy_str ));
YY_BUFFER_STATE yy_scan_bytes YY_PROTO(( yyconst char *bytes, int len ));

static void *yy_flex_alloc YY_PROTO(( yy_size_t ));
static void *yy_flex_realloc YY_PROTO(( void *, yy_size_t ));
static void yy_flex_free YY_PROTO(( void * ));

#define yy_new_buffer yy_create_buffer

#define yy_set_interactive(is_interactive) \
	{ \
	if ( ! yy_current_buffer ) \
		yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
	yy_current_buffer->yy_is_interactive = is_interactive; \
	}

#define yy_set_bol(at_bol) \
	{ \
	if ( ! yy_current_buffer ) \
		yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
	yy_current_buffer->yy_at_bol = at_bol; \
	}

#define YY_AT_BOL() (yy_current_buffer->yy_at_bol)


#define yywrap() 1
#define YY_SKIP_YYWRAP

#define FLEX_DEBUG
typedef unsigned char YY_CHAR;
FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
typedef int yy_state_type;

#define FLEX_DEBUG
extern char *yytext;
#define yytext_ptr yytext

static yy_state_type yy_get_previous_state YY_PROTO(( void ));
static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state ));
static int yy_get_next_buffer YY_PROTO(( void ));
static void yy_fatal_error YY_PROTO(( yyconst char msg[] ));

/* Done after the current pattern has been matched and before the
 * corresponding action - sets up yytext.
 */
#define YY_DO_BEFORE_ACTION \
	yytext_ptr = yy_bp; \
	yyleng = (int) (yy_cp - yy_bp); \
	yy_hold_char = *yy_cp; \
	*yy_cp = '\0'; \
	yy_c_buf_p = yy_cp;

#define YY_NUM_RULES 106
#define YY_END_OF_BUFFER 107
static yyconst short int yy_accept[455] =
    {   0,
        0,    0,    0,    0,   65,   65,    0,    0,   83,   83,
       83,   83,    0,    0,    0,    0,    0,    0,    0,    0,
        0,    0,    0,    0,    0,    0,  107,   58,    2,    2,
       53,   58,   52,    1,   49,   58,   50,   50,   48,   58,
       46,   55,   47,   58,  104,  105,  100,  104,  101,  102,
      103,   64,  104,   62,   62,   87,   86,  104,   85,   84,
       60,    2,    1,   60,   59,   60,   67,   66,  104,   70,
       69,   68,   92,    2,    1,   92,   92,   89,  100,  104,
       88,  104,  104,  101,   93,   95,  104,   57,   45,   45,
       45,   45,   45,   45,   45,   45,   45,   45,   45,   45,

       45,   45,   45,   45,   45,   45,   54,   49,    4,    3,
       50,    0,    0,    0,   63,    0,    0,   65,   61,   83,
       83,   83,   83,   82,   80,   71,   82,   73,   74,   75,
       76,   77,   78,   82,   79,   82,   97,    0,   97,    0,
       94,    0,   90,   91,    0,   93,   96,    0,   98,    0,
       98,   99,   45,   45,   45,   45,   45,   45,   45,   45,
       45,   45,   45,   45,   45,   45,   45,   45,   45,   45,
       45,   45,   45,   45,   45,   45,   45,   45,   45,   45,
        3,   51,   56,    0,    0,    0,    0,    0,    0,    0,
        0,   71,    0,    0,   72,    0,    0,    0,    0,    0,

        0,    0,   45,   45,   45,   45,   45,   45,   45,   45,
       45,   45,   45,   45,   45,   45,   45,   45,   45,   45,
       45,   45,   45,   45,   45,   45,   45,   45,   45,   45,
       45,   45,   45,   45,   45,    0,   71,    0,    0,    0,
       45,   45,   45,   45,   45,   45,   45,   45,   45,   45,
       45,   45,   20,   45,   45,   45,   45,   45,   45,   45,
       45,   45,   45,   45,   32,   45,   45,   45,   45,   45,
       38,   45,   41,   45,   45,   44,    0,    0,    0,   45,
        7,   45,   45,   45,   12,   45,   45,   45,   45,   45,
       45,   45,   45,   23,   45,   45,   45,   45,   45,   29,

       45,   45,   45,   45,   35,   45,   37,   39,   42,   45,
        0,    0,   81,    6,   45,    9,   45,   45,   14,   45,
       45,   45,   45,   45,   45,   45,   45,   45,   45,   45,
       30,   45,   45,   45,   45,   45,   45,    0,   45,   10,
       45,   45,   45,   45,   45,   45,   45,   45,   45,   45,
       45,   45,   45,   45,   45,   33,   45,   45,   45,   43,
        0,   45,   45,   45,   45,   45,   45,   45,   45,   45,
       45,   45,   45,   26,   27,   45,   45,   45,   36,   45,
        0,   45,   45,   45,   15,   45,   45,   45,   45,   21,
       22,   45,   45,   45,   45,   45,   45,    0,    0,   45,

       11,   45,   45,   45,   19,   45,   45,   45,   45,   45,
       45,   45,    5,   45,   45,   16,   45,   45,   24,   45,
       45,   31,   34,   40,    8,   45,   45,   45,   45,   45,
       13,   45,   45,   45,   45,   45,   18,   45,   45,   45,
       25,   45,   45,   45,   45,   45,   17,   45,   45,   45,
       45,   45,   28,    0
    } ;

static yyconst int yy_ec[256] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
        2,    2,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    4,    1,    5,    6,    7,    8,    1,    9,    1,
        1,   10,    1,   11,   12,   13,   14,   15,   16,   16,
       16,   16,   16,   16,   16,   17,   17,   18,   19,   20,
       21,   22,   23,   24,   25,   25,   25,   25,   25,   25,
       13,   13,   13,   13,   13,   13,   13,   13,   13,   13,
       13,   13,   13,   13,   26,   13,   13,   27,   13,   13,
       28,   29,   30,    1,   31,    1,   32,   33,   34,   35,

       36,   37,   38,   39,   40,   13,   41,   42,   43,   44,
       45,   46,   13,   47,   48,   49,   50,   51,   13,   52,
       53,   13,   54,   55,   56,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,

        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1
    } ;

static yyconst int yy_meta[58] =
    {   0,
        1,    1,    2,    1,    1,    1,    3,    1,    1,    1,
        1,    4,    5,    1,    6,    6,    6,    1,    1,    1,
        1,    7,    1,    3,    6,    5,    5,    3,    1,    3,
        5,    6,    6,    6,    6,    6,    6,    5,    5,    5,
        5,    5,    5,    5,    5,    5,    5,    5,    5,    5,
        5,    5,    5,    1,    1,    1,    7
    } ;

static yyconst short int yy_base[477] =
    {   0,
        0,  725,   55,   56,   64,   67,  720,  719,   95,   98,
      105,  108,  137,  143,  101,  113,  147,  150,  160,  178,
      205,    0,   53,  170,  178,  198,  728,  732,  732,  732,
      732,  254,  732,  732,    0,   54,  184,  150,  732,    0,
      732,  732,  732,  685,  732,  732,  732,   58,  732,  732,
      732,  732,  193,  732,  712,  732,  732,  213,  732,  732,
      732,  732,  732,   68,  732,  683,  732,  732,  304,  732,
      732,  732,  732,  732,  732,  158,  682,  732,  231,   47,
      732,  159,  123,  248,  732,  732,  667,  732,    0,  682,
       53,  176,  681,  678,  675,   45,  682,  195,  667,  221,

      676,   72,  205,  671,  678,  681,  732,    0,  732,    0,
      257,    0,  690,  671,  732,  273,  280,  681,  732,  732,
      308,  680,  312,  732,  732,  205,    0,  732,  732,  732,
      732,  732,  732,    0,  732,    0,  732,  306,  309,    0,
      732,  336,  732,  732,  340,  732,  732,  343,  732,  342,
      345,  732,    0,  664,  330,  660,  659,  659,   68,  657,
      663,  123,  668,  654,  657,  225,  663,  649,  650,  147,
      649,  657,  658,  661,  645,  650,  644,  649,  641,  653,
        0,    0,  732,  642,  362,  216,  366,  369,  372,  377,
      228,  302,    0,    0,    0,  663,  380,  306,  383,  378,

      387,  385,  652,  633,  238,  633,  645,  635,  643,  642,