flex.c

来自「很简单的编译器！不过最重要的是思想！」· C语言 代码 · 共 2,459 行 · 第 1/5 页

      123,  138,  120,  124,  147,   64,  140,   65,  125,   71,
      151,   71,  152,   71,  148,  154,   65,   71,   71,   66,
       67,   71,  126,   71,  153,   71,  127,  155,   71,  128,
      129,   65,  157,   71,  159,  160,  130,   71,  158,  131,

       71,   71,  161,  156,   71,  163,   71,   71,   71,   71,
       71,   71,   71,   71,  166,  164,   71,   72,   71,  162,
       71,   71,   71,  165,  167,  175,  168,   71,  176,  179,
       71,  169,  172,  171,  170,   71,   71,   71,  173,  174,
      177,  178,   71,  182,  180,  181,  190,  189,  183,   71,
       71,  184,  185,  187,  201,   71,   71,   71,  196,   71,
      192,  188,  191,   71,  193,  198,  194,   71,  197,   71,
      204,   71,  195,  202,  205,   71,  203,   71,   71,   71,
       71,   71,  206,   71,  207,  199,  200,   71,  215,   71,
       71,   71,   71,  208,   71,   71,  218,  221,   71,   71,

      226,  216,   71,  219,   71,  217,   71,  209,  220,  210,
      222,  229,  223,  224,  227,  225,   71,  234,  228,  211,
      230,   71,  232,  231,   71,  212,  213,  233,  214,  235,
       71,  141,   66,  145,   71,  147,   71,  237,   71,   71,
       71,  142,  236,   71,   65,  148,   71,   71,   71,   71,
       71,  238,   71,   71,   71,   71,  245,   71,   71,   71,
       71,  248,  247,  240,  241,  239,  242,  243,  252,   71,
      244,  254,  253,  257,  256,  255,  261,   71,   71,   71,
      249,   71,  250,  258,   71,   71,  251,  260,   71,   71,
      259,   71,   71,   71,   71,  264,  265,   71,   71,   71,

       71,  267,  262,   71,   71,  268,  269,   71,   71,  263,
       71,   71,   71,  266,  272,  281,  276,  278,   71,  275,
      279,   71,   71,  305,  274,  270,  271,  289,  290,  277,
      280,   71,  282,  283,  283,  284,  283,  283,  285,  283,
      283,  283,  283,  283,  287,  283,  283,  283,  283,  283,
      283,  288,  291,   71,  293,   71,   71,   71,   71,   71,
       71,   71,   71,   71,   71,   71,   71,   71,   71,   71,
      292,   71,   71,   71,   71,   71,  299,  300,   71,  302,
       71,  307,  309,  294,  298,   71,  301,   71,  296,  297,
      303,  314,  316,  306,  311,  304,  308,  312,   71,  315,

       71,  318,  313,  319,  310,  320,   71,   71,   71,   71,
       71,   71,   71,   71,  322,  321,   71,   71,   71,   71,
       71,   71,   71,  382,   71,  380,   71,   71,   71,   71,
      331,  336,   71,  327,  333,  374,   71,  330,  325,  324,
      326,  329,  332,  323,   71,   71,  337,  341,  335,  283,
      283,  284,  283,  283,  285,  283,  283,  283,  283,  283,
      340,  283,  283,  283,  283,  283,  283,   71,   71,   71,
       71,   71,   71,   71,  338,  339,   71,   71,   71,   71,
       71,   71,   71,   71,  342,  343,   71,   71,   71,   71,
      348,   71,   71,  352,   71,  345,  350,  354,   71,  349,

      347,  351,   71,  353,  361,   71,   71,   71,  360,  362,
      356,  359,   71,   71,  364,   71,  363,  368,   71,  369,
      365,   71,   71,   71,  377,   71,   71,  372,   71,  378,
      379,  373,  381,  371,  370,  375,  376,  367,  366,  385,
      386,   71,  358,  357,   71,  384,  383,   48,   48,   53,
       53,   57,   57,   61,   61,  143,  143,  286,  286,  283,
      283,   71,   71,  355,   71,   71,   71,   71,   71,   71,
       71,   71,   71,   71,   71,   71,  346,  344,   71,   71,
       71,   71,  284,  284,   71,   71,  334,   71,   71,   71,
       71,   71,  328,   71,   71,  317,   71,   71,   71,   71,

       71,   71,   71,   71,  295,   71,   71,   71,   71,   71,
       71,   71,  273,   71,   71,   71,   71,   71,   71,   71,
       71,   71,  246,   71,   71,   71,   71,  152,  152,  150,
      149,  148,  146,  144,  142,   71,   71,   71,   71,   60,
      150,  149,  148,  146,  144,   71,   70,   60,  387,    9,
      387,  387,  387,  387,  387,  387,  387,  387,  387,  387,
      387,  387,  387,  387,  387,  387,  387,  387,  387,  387,
      387,  387,  387,  387,  387,  387,  387,  387,  387,  387,
      387,  387,  387,  387,  387,  387,  387,  387,  387,  387,
      387,  387,  387

    } ;

static yyconst short int yy_chk[794] =
    {   0,
        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,    2,    3,    3,    2,    4,    4,    5,
        5,    6,    6,    2,    7,    7,   15,    4,   24,    5,
       41,    6,    8,    8,   13,   13,   25,   15,   16,   16,
       18,   18,   45,   41,   27,   24,   26,   29,   61,   61,
       16,   23,   45,   62,   62,   24,   25,   25,   24,   26,
       25,   31,   40,   25,   28,   23,   23,   26,   27,   25,

       27,   27,  100,   26,   29,   32,   33,   23,   34,   31,
       27,   23,   23,   23,   35,   28,  100,   31,   32,   33,
       40,   28,   32,   40,   28,   34,   32,   33,   36,   43,
       37,   38,   32,   33,   44,   34,   42,   32,   47,   47,
       35,   36,   35,   37,   35,   36,   38,   37,   74,   42,
       47,   37,   38,   73,   43,   36,   64,   42,   36,   44,
       38,   43,   37,   38,   51,   66,   44,   64,   38,   39,
       65,   75,   65,   76,   51,   74,   66,   77,   79,   67,
       67,   78,   39,   80,   73,   82,   39,   75,   81,   39,
       39,   67,   77,   83,   78,   79,   39,   84,   77,   39,

       85,   87,   79,   76,   86,   81,   89,   88,   90,   91,
       92,   95,   93,   97,   84,   82,   96,  392,  386,   80,
       99,  102,  109,   83,   84,   91,   85,  103,   92,   96,
      104,   85,   88,   87,   86,  101,  105,  113,   89,   90,
       93,   95,  106,   99,   97,   97,  103,  102,   99,  107,
      108,   99,   99,  101,  109,  112,  111,  114,  106,  115,
      104,  101,  103,  116,  105,  107,  105,  117,  106,  119,
      113,  120,  105,  111,  114,  121,  112,  122,  123,  127,
      124,  125,  115,  128,  116,  108,  108,  126,  119,  129,
      131,  136,  132,  117,  118,  130,  122,  124,  134,  385,

      128,  120,  133,  122,  381,  121,  135,  118,  123,  118,
      124,  131,  125,  126,  129,  127,  137,  136,  130,  118,
      132,  138,  134,  133,  139,  118,  118,  135,  118,  137,
      140,  141,  145,  145,  154,  147,  156,  139,  158,  160,
      159,  141,  138,  163,  145,  147,  161,  165,  166,  167,
      168,  140,  170,  175,  174,  171,  163,  180,  179,  182,
      181,  166,  165,  156,  158,  154,  159,  160,  171,  183,
      161,  174,  171,  179,  175,  174,  182,  184,  185,  186,
      167,  187,  168,  179,  189,  192,  170,  181,  191,  193,
      180,  194,  200,  202,  205,  185,  186,  203,  204,  209,

      210,  189,  183,  206,  207,  191,  192,  234,  215,  184,
      214,  379,  212,  187,  194,  209,  203,  205,  213,  202,
      206,  378,  220,  234,  200,  193,  193,  214,  215,  204,
      207,  216,  210,  211,  211,  211,  211,  211,  211,  211,
      211,  211,  211,  211,  212,  211,  211,  211,  211,  211,
      211,  213,  216,  217,  220,  221,  223,  225,  226,  227,
      228,  229,  230,  233,  231,  235,  236,  238,  237,  240,
      217,  245,  248,  247,  249,  251,  227,  228,  250,  230,
      254,  236,  238,  221,  226,  255,  229,  256,  223,  225,
      231,  249,  251,  235,  245,  233,  237,  247,  258,  250,

      259,  254,  248,  255,  240,  256,  261,  262,  263,  265,
      264,  268,  269,  272,  259,  258,  280,  277,  282,  287,
      376,  276,  291,  374,  372,  369,  368,  364,  290,  360,
      272,  282,  359,  265,  277,  355,  354,  269,  263,  262,
      264,  268,  276,  261,  288,  289,  287,  291,  280,  286,
      286,  286,  286,  286,  286,  286,  286,  286,  286,  286,
      290,  286,  286,  286,  286,  286,  286,  292,  296,  300,
      302,  303,  305,  307,  288,  289,  312,  315,  309,  318,
      326,  331,  332,  336,  292,  296,  337,  335,  338,  339,
      303,  342,  349,  312,  343,  300,  307,  318,  353,  305,

      302,  309,  356,  315,  335,  362,  361,  383,  332,  336,
      326,  331,  363,  365,  338,  373,  337,  342,  375,  343,
      339,  377,  352,  384,  362,  351,  350,  349,  348,  363,
      365,  353,  373,  347,  345,  356,  361,  341,  340,  383,
      384,  333,  330,  329,  327,  377,  375,  388,  388,  389,
      389,  390,  390,  391,  391,  393,  393,  394,  394,  395,
      395,  325,  324,  323,  322,  321,  320,  319,  316,  314,
      313,  311,  310,  308,  306,  304,  301,  299,  298,  297,
      294,  293,  285,  283,  281,  279,  278,  275,  274,  271,
      270,  267,  266,  260,  257,  253,  252,  244,  243,  242,

      241,  239,  232,  224,  222,  219,  218,  208,  201,  199,
      198,  197,  196,  195,  190,  188,  178,  177,  176,  173,
      172,  169,  164,  162,  157,  155,  153,  152,  151,  150,
      149,  148,  146,  143,  142,  110,   98,   94,   72,   60,
       56,   54,   52,   49,   46,   30,   20,   11,    9,  387,
      387,  387,  387,  387,  387,  387,  387,  387,  387,  387,
      387,  387,  387,  387,  387,  387,  387,  387,  387,  387,
      387,  387,  387,  387,  387,  387,  387,  387,  387,  387,
      387,  387,  387,  387,  387,  387,  387,  387,  387,  387,
      387,  387,  387

    } ;

static yy_state_type yy_last_accepting_state;
static char *yy_last_accepting_cpos;

/* The intent behind this definition is that it'll catch
 * any uses of REJECT which flex missed.
 */
#define REJECT reject_used_but_not_detected
static int yy_more_flag = 0;
static int yy_more_len = 0;
#define yymore() (yy_more_flag = 1)
#define YY_MORE_ADJ yy_more_len
#define YY_RESTORE_YY_MORE_OFFSET
char *yytext;
#define INITIAL 0
/*
     YABASIC --- a tiny integrated Basic Compiler/Interpreter

     FLEX - part
     
     this Program is subject to the GNU General Public License;
     see the file yabasic.c for details.
*/

#include <string.h>
#undef WINDOWS

#include "bison.h"       /* get tokens from BISON */
#ifndef YABASIC_INCLUDED
#include "yabasic.h"     /* definitions of yabasic */
#endif

void switch_to_my_file(FILE *inputfile); /* switches input to given file */
#define RET 1

#define PRELNO 2

#define POSTLNO 3


/* 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 \
	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;



	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_more_len = 0;
		if ( yy_more_flag )
			{
			yy_more_len = yy_c_buf_p - yytext_ptr;
			yy_more_flag = 0;
			}
		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 >= 388 )
					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] != 750 );

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
{BEGIN INITIAL;}     /* ignore whitespace */
	YY_BREAK
case 2:
YY_RULE_SETUP
{BEGIN INITIAL;} /* still ignore whitespace */
	YY_BREAK
case 3:
YY_RULE_SETUP
{BEGIN PRELNO;yyless(0);return tLABEL;}
	YY_BREAK
case 4:
YY_RULE_SETUP
{BEGIN PRELNO;yyless(0);return tLABEL;}
	YY_BREAK
case 5:
YY_RULE_SETUP
{}
	YY_BREAK
case 6:
YY_RULE_SETUP
{
  BEGIN POSTLNO;
  yylval.symbol=(char *)my_strdup(yytext);
  return tSYMBOL;
}
	YY_BREAK
case 7:
YY_RULE_SETUP
{BEGIN INITIAL; yylval.sep=0;return tSEP;}
	YY_BREAK
case 8:
YY_RULE_SETUP
{BEGIN INITIAL;yylval.sep=1;return tSEP;}
	YY_BREAK
case 9:
YY_RULE_SETUP
{BEGIN INITIAL;yylval.sep=1;return tSEP;}
	YY_BREAK
case 10:
YY_RULE_SETUP
{return yytext[0];}
	YY_BREAK
case 11:
YY_RULE_SETUP