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#define  YY_INT_ALIGNED short int

/* A lexical scanner generated by flex */

#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION 2
#define YY_FLEX_MINOR_VERSION 6
#define YY_FLEX_SUBMINOR_VERSION 4
#if YY_FLEX_SUBMINOR_VERSION > 0
#define FLEX_BETA
#endif

/* First, we deal with  platform-specific or compiler-specific issues. */

/* begin standard C headers. */
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>

/* end standard C headers. */

/* flex integer type definitions */

#ifndef FLEXINT_H
#define FLEXINT_H

/* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */

#if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L

/* C99 says to define __STDC_LIMIT_MACROS before including stdint.h,
 * if you want the limit (max/min) macros for int types. 
 */
#ifndef __STDC_LIMIT_MACROS
#define __STDC_LIMIT_MACROS 1
#endif

#include <inttypes.h>
typedef int8_t flex_int8_t;
typedef uint8_t flex_uint8_t;
typedef int16_t flex_int16_t;
typedef uint16_t flex_uint16_t;
typedef int32_t flex_int32_t;
typedef uint32_t flex_uint32_t;
#else
typedef signed char flex_int8_t;
typedef short int flex_int16_t;
typedef int flex_int32_t;
typedef unsigned char flex_uint8_t; 
typedef unsigned short int flex_uint16_t;
typedef unsigned int flex_uint32_t;

/* Limits of integral types. */
#ifndef INT8_MIN
#define INT8_MIN               (-128)
#endif
#ifndef INT16_MIN
#define INT16_MIN              (-32767-1)
#endif
#ifndef INT32_MIN
#define INT32_MIN              (-2147483647-1)
#endif
#ifndef INT8_MAX
#define INT8_MAX               (127)
#endif
#ifndef INT16_MAX
#define INT16_MAX              (32767)
#endif
#ifndef INT32_MAX
#define INT32_MAX              (2147483647)
#endif
#ifndef UINT8_MAX
#define UINT8_MAX              (255U)
#endif
#ifndef UINT16_MAX
#define UINT16_MAX             (65535U)
#endif
#ifndef UINT32_MAX
#define UINT32_MAX             (4294967295U)
#endif

#ifndef SIZE_MAX
#define SIZE_MAX               (~(size_t)0)
#endif

#endif /* ! C99 */

#endif /* ! FLEXINT_H */

/* begin standard C++ headers. */

/* TODO: this is always defined, so inline it */
#define yyconst const

#if defined(__GNUC__) && __GNUC__ >= 3
#define yynoreturn __attribute__((__noreturn__))
#else
#define yynoreturn
#endif

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

/* Promotes a possibly negative, possibly signed char to an
 *   integer in range [0..255] for use as an array index.
 */
#define YY_SC_TO_UI(c) ((YY_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. */
#ifndef YY_BUF_SIZE
#ifdef __ia64__
/* On IA-64, the buffer size is 16k, not 8k.
 * Moreover, YY_BUF_SIZE is 2*YY_READ_BUF_SIZE in the general case.
 * Ditto for the __ia64__ case accordingly.
 */
#define YY_BUF_SIZE 32768
#else
#define YY_BUF_SIZE 16384
#endif /* __ia64__ */
#endif

/* The state buf must be large enough to hold one state per character in the main buffer.
 */
#define YY_STATE_BUF_SIZE   ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))

#ifndef YY_TYPEDEF_YY_BUFFER_STATE
#define YY_TYPEDEF_YY_BUFFER_STATE
typedef struct yy_buffer_state *YY_BUFFER_STATE;
#endif

#ifndef YY_TYPEDEF_YY_SIZE_T
#define YY_TYPEDEF_YY_SIZE_T
typedef size_t yy_size_t;
#endif

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
    
    #define YY_LESS_LINENO(n)
    #define YY_LINENO_REWIND_TO(ptr)
    
/* Return all but the first "n" matched characters back to the input stream. */
#define yyless(n) \
	do \
		{ \
		/* Undo effects of setting up yytext. */ \
        int yyless_macro_arg = (n); \
        YY_LESS_LINENO(yyless_macro_arg);\
		*yy_cp = (yy_hold_char); \
		YY_RESTORE_YY_MORE_OFFSET \
		(yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
		YY_DO_BEFORE_ACTION; /* set up yytext again */ \
		} \
	while ( 0 )
#define unput(c) yyunput( c, (yytext_ptr)  )

#ifndef YY_STRUCT_YY_BUFFER_STATE
#define YY_STRUCT_YY_BUFFER_STATE
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.
	 */
	int 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;

    int yy_bs_lineno; /**< The line count. */
    int yy_bs_column; /**< The column count. */

	/* 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

	};
#endif /* !YY_STRUCT_YY_BUFFER_STATE */

/* Stack of input buffers. */
static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */
static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */
static YY_BUFFER_STATE * yy_buffer_stack = NULL; /**< Stack as an array. */

/* 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".
 *
 * Returns the top of the stack, or NULL.
 */
#define YY_CURRENT_BUFFER ( (yy_buffer_stack) \
                          ? (yy_buffer_stack)[(yy_buffer_stack_top)] \
                          : NULL)
/* Same as previous macro, but useful when we know that the buffer stack is not
 * NULL or when we need an lvalue. For internal use only.
 */
#define YY_CURRENT_BUFFER_LVALUE (yy_buffer_stack)[(yy_buffer_stack_top)]

/* 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 = NULL;
static int yy_init = 0;		/* 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 ( FILE *input_file  );
void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer  );
YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size  );
void yy_delete_buffer ( YY_BUFFER_STATE b  );
void yy_flush_buffer ( YY_BUFFER_STATE b  );
void yypush_buffer_state ( YY_BUFFER_STATE new_buffer  );
void yypop_buffer_state ( void );

static void yyensure_buffer_stack ( void );
static void yy_load_buffer_state ( void );
static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file  );
#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER )

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

void *yyalloc ( yy_size_t  );
void *yyrealloc ( void *, yy_size_t  );
void yyfree ( void *  );

#define yy_new_buffer yy_create_buffer
#define yy_set_interactive(is_interactive) \
	{ \
	if ( ! YY_CURRENT_BUFFER ){ \
        yyensure_buffer_stack (); \
		YY_CURRENT_BUFFER_LVALUE =    \
            yy_create_buffer( yyin, YY_BUF_SIZE ); \
	} \
	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
	}
#define yy_set_bol(at_bol) \
	{ \
	if ( ! YY_CURRENT_BUFFER ){\
        yyensure_buffer_stack (); \
		YY_CURRENT_BUFFER_LVALUE =    \
            yy_create_buffer( yyin, YY_BUF_SIZE ); \
	} \
	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
	}
#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)

/* Begin user sect3 */
typedef flex_uint8_t YY_CHAR;

FILE *yyin = NULL, *yyout = NULL;

typedef int yy_state_type;

extern int yylineno;
int yylineno = 1;

extern char *yytext;
#ifdef yytext_ptr
#undef yytext_ptr
#endif
#define yytext_ptr yytext

static yy_state_type yy_get_previous_state ( void );
static yy_state_type yy_try_NUL_trans ( yy_state_type current_state  );
static int yy_get_next_buffer ( void );
static void yynoreturn yy_fatal_error ( const 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 33
#define YY_END_OF_BUFFER 34
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/* This struct is not used in this scanner,
   but its presence is necessary. */
struct yy_trans_info
	{
	flex_int32_t yy_verify;
	flex_int32_t yy_nxt;
	};
static const flex_int16_t yy_accept[89] =
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    {   0,
        0,    0,   34,   32,   28,   29,   29,   27,   20,   32,
       21,   22,   15,   13,   11,   14,   19,   16,   32,   32,
       10,   12,    9,   23,   24,    9,    9,    9,    9,    9,
        9,   25,   32,   26,   17,    0,    0,    0,    8,   31,
       30,    7,    8,    7,    7,    7,    7,    9,    9,    9,
        9,    3,    9,    9,    9,    9,   18,    0,    8,    0,
        0,    7,    0,    9,    9,    6,    9,    9,    9,    0,
        8,    0,    0,    8,    7,    4,    9,    9,    9,    9,
        0,    8,    9,    9,    5,    2,    1,    0
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    } ;

static const YY_CHAR yy_ec[256] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
        1,    1,    4,    1,    1,    1,    1,    1,    1,    1,
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        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    5,    6,    1,    1,    1,    1,    7,    1,    8,
        9,   10,   11,   12,   13,   14,   15,   16,   17,   17,
       17,   17,   17,   17,   17,   18,   18,    1,   19,    1,
       20,    1,    1,    1,   21,   21,   21,   21,   22,   21,
       23,   23,   23,   23,   23,   23,   23,   23,   23,   23,
       23,   23,   23,   23,   23,   23,   23,   24,   23,   23,
       25,   26,   27,   26,   23,   26,   28,   21,   29,   21,

       30,   31,   23,   32,   33,   23,   23,   34,   23,   35,
       36,   23,   23,   37,   38,   39,   40,   23,   41,   24,
       23,   23,   42,   43,   44,    1,    1,    1,    1,    1,
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        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 const YY_CHAR yy_meta[45] =
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    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    2,    2,    2,    1,    1,
        2,    2,    3,    3,    3,    3,    3,    2,    2,    2,
        2,    3,    3,    3,    3,    3,    3,    3,    3,    3,
        3,    1,    1,    1
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    } ;

static const flex_int16_t yy_base[93] =
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    {   0,
        0,    0,  212,  235,  235,  235,  235,  235,  235,  203,
      235,  235,  235,   31,  235,   36,   39,   36,   44,   49,
      235,  235,   53,  235,  235,   65,  165,   41,   43,   25,
       52,  235,  155,  235,  235,   71,   79,   84,   87,  235,
      235,  235,   90,   97,  105,    0,  110,    0,  162,   91,
       82,  153,   96,   97,  100,   99,  235,  127,  130,  138,
      145,  150,  155,  123,  146,  124,  141,  148,  116,  173,
      176,  184,  187,  190,    0,  107,  131,  105,  180,  181,
      200,  203,  144,  188,   76,   60,   51,  235,  227,  229,
       72,  231
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    } ;

static const flex_int16_t yy_def[93] =
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    {   0,
       88,    1,   88,   88,   88,   88,   88,   88,   88,   88,
       88,   88,   88,   88,   88,   88,   88,   88,   89,   89,
       88,   88,   90,   88,   88,   90,   26,   26,   26,   26,
       26,   88,   88,   88,   88,   88,   89,   89,   88,   88,
       88,   88,   88,   88,   89,   91,   89,   92,   26,   26,
       26,   26,   26,   26,   26,   26,   88,   88,   88,   88,
       88,   89,   89,   26,   26,   26,   26,   26,   26,   88,
       88,   88,   88,   88,   63,   26,   26,   26,   26,   26,
       88,   88,   26,   26,   26,   26,   26,    0,   88,   88,
       88,   88
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    } ;

static const flex_int16_t yy_nxt[280] =
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    {   0,
        4,    5,    6,    7,    8,    9,   10,   11,   12,   13,
       14,   15,   16,   17,   18,   19,   20,   20,   21,   22,
       23,   23,   23,   23,   24,    4,   25,   23,   23,   26,
       27,   23,   28,   23,   23,   23,   29,   30,   23,   23,
       31,   32,   33,   34,   36,   40,   37,   38,   38,   36,
       41,   37,   38,   38,   39,   39,   39,   43,   49,   44,
       45,   44,   43,   55,   47,   47,   47,   46,   48,   48,
       48,   52,   54,   63,   49,   53,   49,   48,   48,   48,
       48,   48,   48,   56,   49,   49,   39,   39,   39,   48,
       48,   48,   43,   49,   44,   44,   44,   43,   50,   47,

       47,   47,   39,   39,   39,   59,   59,   59,   58,   49,
       43,   60,   61,   61,   61,   49,   58,   65,   43,   60,
       62,   62,   44,   43,   49,   47,   47,   47,   64,   49,
       49,   69,   49,   49,   66,   67,   68,   70,   49,   70,
       49,   83,   71,   71,   71,   59,   59,   59,   73,   80,
       73,   72,   76,   74,   74,   74,   49,   49,   43,   72,
       61,   61,   61,   43,   49,   62,   62,   44,   88,   66,
       75,   75,   75,   77,   49,   75,   75,   49,   86,   49,
       78,   49,   75,   75,   75,   75,   49,   79,   71,   71,
       71,   71,   71,   71,   81,   49,   81,   57,   51,   82,

       82,   82,   74,   74,   74,   74,   74,   74,   84,   35,
       85,   88,   88,   49,   49,   82,   82,   82,   82,   82,
       82,   49,   88,   88,   88,   88,   87,   42,   42,   42,
       49,   49,   48,   48,    3,   88,   88,   88,   88,   88,
       88,   88,   88,   88,   88,   88,   88,   88,   88,   88,
       88,   88,   88,   88,   88,   88,   88,   88,   88,   88,
       88,   88,   88,   88,   88,   88,   88,   88,   88,   88,
       88,   88,   88,   88,   88,   88,   88,   88,   88
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    } ;

static const flex_int16_t yy_chk[280] =
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    {   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,    1,   14,   18,   14,   14,   14,   16,
       18,   16,   16,   16,   17,   17,   17,   19,   30,   19,
       19,   19,   20,   30,   20,   20,   20,   19,   23,   23,
       23,   28,   29,   91,   28,   28,   29,   23,   23,   23,
       26,   26,   26,   31,   87,   31,   36,   36,   36,   26,
       26,   26,   37,   86,   37,   37,   37,   38,   26,   38,

       38,   38,   39,   39,   39,   43,   43,   43,   39,   85,
       44,   43,   44,   44,   44,   51,   39,   51,   45,   43,
       45,   45,   45,   47,   50,   47,   47,   47,   50,   53,
       54,   56,   56,   55,   53,   54,   55,   58,   78,   58,
       76,   78,   58,   58,   58,   59,   59,   59,   60,   69,
       60,   59,   64,   60,   60,   60,   64,   66,   61,   59,
       61,   61,   61,   62,   77,   62,   62,   62,   63,   77,
       63,   63,   63,   65,   67,   63,   63,   83,   83,   65,
       67,   68,   63,   63,   63,   63,   52,   68,   70,   70,
       70,   71,   71,   71,   72,   49,   72,   33,   27,   72,

       72,   72,   73,   73,   73,   74,   74,   74,   79,   10,
       80,    3,    0,   79,   80,   81,   81,   81,   82,   82,
       82,   84,    0,    0,    0,    0,   84,   89,   89,   89,
       90,   90,   92,   92,   88,   88,   88,   88,   88,   88,
       88,   88,   88,   88,   88,   88,   88,   88,   88,   88,
       88,   88,   88,   88,   88,   88,   88,   88,   88,   88,
       88,   88,   88,   88,   88,   88,   88,   88,   88,   88,
       88,   88,   88,   88,   88,   88,   88,   88,   88
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    } ;

static yy_state_type yy_last_accepting_state;
static char *yy_last_accepting_cpos;

extern int yy_flex_debug;
int yy_flex_debug = 0;

/* The intent behind this definition is that it'll catch
 * any uses of REJECT which flex missed.
 */
#define REJECT reject_used_but_not_detected
#define yymore() yymore_used_but_not_detected
#define YY_MORE_ADJ 0
#define YY_RESTORE_YY_MORE_OFFSET
char *yytext;
#line 1 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
#line 2 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
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    #include <stdio.h>
    #include "debug.h"
    #include "syntax.tab.h"
    #include "data.h"
    #include <string.h>

    int Iscomments = 0;
    extern int syntax;
    static Node_t* add_node_text(char * content,char *text,int len);
#line 541 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lex.yy.c"
#line 542 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lex.yy.c"
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#define INITIAL 0

#ifndef YY_NO_UNISTD_H
/* Special case for "unistd.h", since it is non-ANSI. We include it way
 * down here because we want the user's section 1 to have been scanned first.
 * The user has a chance to override it with an option.
 */
#include <unistd.h>
#endif

#ifndef YY_EXTRA_TYPE
#define YY_EXTRA_TYPE void *
#endif

static int yy_init_globals ( void );

/* Accessor methods to globals.
   These are made visible to non-reentrant scanners for convenience. */

int yylex_destroy ( void );

int yyget_debug ( void );

void yyset_debug ( int debug_flag  );

YY_EXTRA_TYPE yyget_extra ( void );

void yyset_extra ( YY_EXTRA_TYPE user_defined  );

FILE *yyget_in ( void );

void yyset_in  ( FILE * _in_str  );

FILE *yyget_out ( void );

void yyset_out  ( FILE * _out_str  );

			int yyget_leng ( void );

char *yyget_text ( void );

int yyget_lineno ( void );

void yyset_lineno ( int _line_number  );

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

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

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

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

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

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

#endif

/* Amount of stuff to slurp up with each read. */
#ifndef YY_READ_BUF_SIZE
#ifdef __ia64__
/* On IA-64, the buffer size is 16k, not 8k */
#define YY_READ_BUF_SIZE 16384
#else
#define YY_READ_BUF_SIZE 8192
#endif /* __ia64__ */
#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 do { if (fwrite( yytext, (size_t) yyleng, 1, yyout )) {} } while (0)
#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_LVALUE->yy_is_interactive ) \
		{ \
		int c = '*'; \
		int 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 \
		{ \
		errno=0; \
		while ( (result = (int) fread(buf, 1, (yy_size_t) max_size, yyin)) == 0 && ferror(yyin)) \
			{ \
			if( errno != EINTR) \
				{ \
				YY_FATAL_ERROR( "input in flex scanner failed" ); \
				break; \
				} \
			errno=0; \
			clearerr(yyin); \
			} \
		}\
\

#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

/* end tables serialization structures and prototypes */

/* Default declaration of generated scanner - a define so the user can
 * easily add parameters.
 */
#ifndef YY_DECL
#define YY_DECL_IS_OURS 1

extern int yylex (void);

#define YY_DECL int yylex (void)
#endif /* !YY_DECL */

/* 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 /*LINTED*/break;
#endif

#define YY_RULE_SETUP \
	YY_USER_ACTION

/** The main scanner function which does all the work.
 */
YY_DECL
{
	yy_state_type yy_current_state;
	char *yy_cp, *yy_bp;
	int yy_act;
    
	if ( !(yy_init) )
		{
		(yy_init) = 1;

#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 ) {
			yyensure_buffer_stack ();
			YY_CURRENT_BUFFER_LVALUE =
				yy_create_buffer( yyin, YY_BUF_SIZE );
		}

		yy_load_buffer_state(  );
		}

	{
#line 43 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
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#line 761 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lex.yy.c"
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	while ( /*CONSTCOND*/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_match:
		do
			{
			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 >= 89 )
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					yy_c = yy_meta[yy_c];
				}
			yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
			++yy_cp;
			}
		while ( yy_base[yy_current_state] != 235 );
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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 44 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("STRUCT"); return STRUCT; }
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	YY_BREAK
case 2:
YY_RULE_SETUP
#line 45 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("RETURN"); return RETURN; }
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	YY_BREAK
case 3:
YY_RULE_SETUP
#line 46 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("IF"); return IF; }
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	YY_BREAK
case 4:
YY_RULE_SETUP
#line 47 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("ELSE"); return ELSE; }
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	YY_BREAK
case 5:
YY_RULE_SETUP
#line 48 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("WHILE"); return WHILE; }
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	YY_BREAK
case 6:
YY_RULE_SETUP
#line 49 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("TYPE"); return TYPE; }
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	YY_BREAK
case 7:
/* rule 7 can match eol */
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YY_RULE_SETUP
#line 50 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ unput(yytext[yyleng-1]); yycolumn--,yytext[yyleng-1] = 0;ELEMENT("INT"); return INT;}
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	YY_BREAK
case 8:
YY_RULE_SETUP
#line 51 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("FLOAT"); return FLOAT;}
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	YY_BREAK
case 9:
YY_RULE_SETUP
#line 52 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("ID"); return ID; }
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	YY_BREAK
case 10:
YY_RULE_SETUP
#line 53 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("SEMI"); return SEMI;}
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	YY_BREAK
case 11:
YY_RULE_SETUP
#line 54 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("COMMA"); return COMMA;}
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	YY_BREAK
case 12:
YY_RULE_SETUP
#line 55 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("ASSIGNOP"); return ASSIGNOP;}
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	YY_BREAK
case 13:
YY_RULE_SETUP
#line 56 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("PLUS"); return PLUS;}
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	YY_BREAK
case 14:
YY_RULE_SETUP
#line 57 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("MINUS"); return MINUS;}
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	YY_BREAK
case 15:
YY_RULE_SETUP
#line 58 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("STAR"); return STAR;}
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	YY_BREAK
case 16:
YY_RULE_SETUP
#line 59 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("DIV"); return DIV;}
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	YY_BREAK
case 17:
YY_RULE_SETUP
#line 60 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("AND"); return AND;}
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	YY_BREAK
case 18:
YY_RULE_SETUP
#line 61 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("OR"); return OR;}
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	YY_BREAK
case 19:
YY_RULE_SETUP
#line 62 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("DOT"); return DOT;}
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	YY_BREAK
case 20:
YY_RULE_SETUP
#line 63 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("NOT"); return NOT;}
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	YY_BREAK
case 21:
YY_RULE_SETUP
#line 64 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("LP"); return LP;}
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	YY_BREAK
case 22:
YY_RULE_SETUP
#line 65 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("RP"); return RP;}
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	YY_BREAK
case 23:
YY_RULE_SETUP
#line 66 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("LB"); return LB;}
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	YY_BREAK
case 24:
YY_RULE_SETUP
#line 67 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("RB"); return RB;}
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	YY_BREAK
case 25:
YY_RULE_SETUP
#line 68 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("LC"); return LC;}
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	YY_BREAK
case 26:
YY_RULE_SETUP
#line 69 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ ELEMENT("RC"); return RC;}
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	YY_BREAK
case 27:
YY_RULE_SETUP
#line 70 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ strcat(linetext," ");}
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	YY_BREAK
case 28:
YY_RULE_SETUP
#line 71 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ yycolumn += 3; strcat(linetext,"\t");}
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	YY_BREAK
case 29:
/* rule 29 can match eol */
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YY_RULE_SETUP
#line 72 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ yycolumn = 1; yylineno += 1; memset(linetext,0,sizeof(linetext)); }
	YY_BREAK
case 30:
YY_RULE_SETUP
#line 73 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ char c = input(); while(c != '\n') { c = input(); } yylineno += 1; }
	YY_BREAK
case 31:
YY_RULE_SETUP
#line 74 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{   
                char c1 = input(),c2 = input();
                if (c1 == '\n') {
                    yylineno += 1;
                    yycolumn = 1;
                } else {
                    yycolumn += 1;
                }
                while (c1 != '*' || c2 != '/') {
                    if (c2 == '\n') {
                        yylineno += 1;
                        yycolumn = 1;
                    } else {
                        yycolumn += 1;
                    }
                    c1 = c2;
                    c2 = input();
                }
            }
	YY_BREAK
case 32:
YY_RULE_SETUP
#line 93 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"
{ LexicalError("%s",yytext); syntax++; }
	YY_BREAK
case 33:
YY_RULE_SETUP
#line 95 "/home/ppx/zhaochaoyi/Lab-compiler/Code/lexical.l"