c-.yy.c

一个编译器的例子,基于c语言,在linux下开发 现在了简单的c语言例子

#line 2 "c-.yy.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 <unistd.h>


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


#ifdef __cplusplus

#include <stdlib.h>

/* 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)

typedef unsigned char YY_CHAR;
FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
typedef int yy_state_type;
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 76
#define YY_END_OF_BUFFER 77
static yyconst short int yy_accept[162] =
    {   0,
        0,    0,   77,   75,   74,   73,   57,   75,   66,   56,
       75,   30,   31,   64,   63,   72,   62,   59,   65,   23,
       23,   60,   61,   67,   58,   68,   70,   71,   71,   32,
       33,   69,   71,   71,   71,   71,   71,   71,   71,   71,
       71,   71,   71,   71,   28,   75,   29,   55,   74,   39,
        0,    3,   46,   34,   47,    0,    0,   44,   52,   42,
       53,   43,   54,    2,    0,   45,    0,   23,    0,   51,
       36,   38,   37,   50,   71,   71,    0,   27,   48,   71,
       71,   71,   71,   71,   16,   71,   71,   71,   71,    9,
       71,   71,   71,   71,   71,   71,   71,   49,   35,   24,

        0,    1,   26,   25,   41,   40,   27,   71,   71,   71,
       71,   71,   71,   71,   71,   20,   71,    6,   71,   71,
       71,   71,   71,   71,   71,   18,    5,   71,   71,   71,
       10,   71,   15,   71,   71,   71,   71,    4,   71,   11,
       71,   71,   71,    7,   71,   71,   71,   71,   13,   71,
       71,    8,   71,   14,   21,   17,   71,   19,   22,   12,
        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,    2,    4,    5,    1,    1,    6,    7,    8,    9,
       10,   11,   12,   13,   14,   15,   16,   17,   18,   18,
       18,   18,   18,   18,   18,   18,   18,   19,   20,   21,
       22,   23,   24,    1,   25,   25,   25,   25,   26,   25,
       27,   27,   27,   27,   27,   27,   27,   27,   27,   27,
       27,   27,   27,   27,   27,   27,   27,   28,   27,   27,
       29,   30,   31,   32,   33,    1,   34,   35,   36,   37,

       38,   39,   40,   41,   42,   27,   43,   44,   27,   45,
       46,   47,   27,   48,   49,   50,   51,   52,   53,   28,
       27,   27,   54,   55,   56,   57,    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,    1,    1,    1,    1,    1,    2,    1,    1,
        1,    1,    1,    1,    1,    1,    3,    3,    1,    1,
        1,    1,    1,    1,    3,    3,    4,    4,    1,    1,
        1,    1,    4,    3,    3,    3,    3,    3,    3,    4,
        4,    4,    4,    4,    4,    4,    4,    4,    4,    4,
        4,    4,    4,    1,    1,    1,    1
    } ;

static yyconst short int yy_base[167] =
    {   0,
        0,    0,  293,  294,  290,  294,  269,  285,  267,   51,
      258,  294,  294,  265,   47,  294,   48,  294,   50,   50,
       59,  294,  294,   42,  264,   57,  294,  252,   69,  294,
      294,  262,   27,   51,   55,   77,   63,   57,   66,   65,
       79,   73,   81,   67,  294,   60,  294,  294,  281,  294,
      277,  294,  294,  294,  294,  108,  116,  294,  294,  294,
      294,  294,  294,  294,  278,  294,  111,  115,    0,  258,
      294,  294,  294,  257,  245,  244,  117,  119,  294,   87,
       98,  106,  108,  109,   71,  110,  111,  112,  113,  243,
      116,  122,  117,  121,  123,  128,  129,  294,  294,  294,

      272,  294,  155,    0,  294,  294,  157,  143,  145,  146,
      118,  147,  149,  152,  153,  241,  155,  240,  158,  156,
      159,  162,  160,  165,  163,  239,  238,  166,  167,  169,
      237,  171,  236,  172,  178,  181,  183,  235,  182,  234,
      190,  192,  191,  233,  194,  195,  197,  198,  224,  199,
      201,  216,  200,  215,  213,  211,  204,  210,  208,  125,
      294,  251,  255,  257,  261,  115
    } ;

static yyconst short int yy_def[167] =
    {   0,
      161,    1,  161,  161,  161,  161,  161,  162,  161,  161,
      163,  161,  161,  161,  161,  161,  161,  161,  161,  161,
      161,  161,  161,  161,  161,  161,  161,  164,  164,  161,
      161,  161,  164,  164,  164,  164,  164,  164,  164,  164,
      164,  164,  164,  164,  161,  161,  161,  161,  161,  161,
      162,  161,  161,  161,  161,  163,  163,  161,  161,  161,
      161,  161,  161,  161,  165,  161,  161,  161,  166,  161,
      161,  161,  161,  161,  164,  164,  161,  164,  161,  164,
      164,  164,  164,  164,  164,  164,  164,  164,  164,  164,
      164,  164,  164,  164,  164,  164,  164,  161,  161,  161,

      165,  161,  161,  166,  161,  161,  161,  164,  164,  164,
      164,  164,  164,  164,  164,  164,  164,  164,  164,  164,
      164,  164,  164,  164,  164,  164,  164,  164,  164,  164,
      164,  164,  164,  164,  164,  164,  164,  164,  164,  164,
      164,  164,  164,  164,  164,  164,  164,  164,  164,  164,
      164,  164,  164,  164,  164,  164,  164,  164,  164,  164,
        0,  161,  161,  161,  161,  161
    } ;

static yyconst short int yy_nxt[352] =
    {   0,
        4,    5,    6,    7,    8,    9,   10,   11,   12,   13,
       14,   15,   16,   17,   18,   19,   20,   21,   22,   23,
       24,   25,   26,   27,   28,   29,   28,   28,   30,    4,
       31,   32,   28,   28,   33,   34,   35,   36,   37,   38,
       28,   39,   28,   28,   28,   28,   40,   41,   42,   28,
       28,   43,   44,   45,   46,   47,   48,   54,   59,   76,
       64,   61,   70,   71,   67,   65,   68,   68,   60,   62,
       63,   66,   55,   67,   80,   68,   68,   69,   73,   74,
       77,   98,   77,   76,   81,   78,   78,   76,   77,   76,
       77,   82,   84,   78,   78,   76,   83,   76,   76,   76,

       85,   76,   89,   76,   90,   76,   87,   97,   88,   76,
       91,   76,   92,   76,   99,  100,   93,  104,  161,   76,
       86,  113,   94,   56,  108,   95,   96,  103,  103,   67,
       76,   68,   68,  107,  107,   78,   78,   57,   76,  110,
       76,   76,   76,   76,   76,   76,  109,  112,   76,   76,
       76,   76,  111,   76,   76,   76,  115,   76,  114,  116,
       76,   76,  117,  119,  122,  118,  120,  128,  121,  123,
      124,  103,  103,  107,  107,   76,  125,   76,   76,   76,
      129,   76,  126,  130,   76,   76,  132,   76,   76,  131,
       76,   76,   76,  127,   76,   76,  138,   76,   76,   76,

      133,   76,  134,   76,   76,  140,  135,  141,  139,  136,
       76,  137,  143,   76,   76,   76,  147,  142,  148,  149,
      144,  145,   76,   76,   76,  146,   76,   76,  152,   76,
       76,   76,   76,   76,  150,  151,   76,  153,  156,  154,
       76,  160,   76,   76,  159,   76,  155,   76,   76,  157,
      158,   51,   51,   51,   51,   56,   76,   56,   56,   75,
       75,  101,  101,  101,  101,   76,   76,   76,   76,   76,
       76,   76,   76,   76,  102,   76,   76,   76,  106,  105,
      102,   52,   49,   79,   76,   72,   58,   57,   53,   52,
       50,   49,  161,    3,  161,  161,  161,  161,  161,  161,

      161,  161,  161,  161,  161,  161,  161,  161,  161,  161,
      161,  161,  161,  161,  161,  161,  161,  161,  161,  161,
      161,  161,  161,  161,  161,  161,  161,  161,  161,  161,
      161,  161,  161,  161,  161,  161,  161,  161,  161,  161,
      161,  161,  161,  161,  161,  161,  161,  161,  161,  161,
      161
    } ;

static yyconst short int yy_chk[352] =
    {   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,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,   10,   15,   33,
       19,   17,   24,   24,   20,   19,   20,   20,   15,   17,
       17,   19,   10,   21,   33,   21,   21,   20,   26,   26,
       29,   46,   29,   34,   34,   29,   29,   35,   36,   38,
       36,   34,   35,   36,   36,   37,   34,   40,   39,   44,

       35,   29,   38,   85,   39,   42,   37,   44,   37,   36,
       39,   41,   40,   43,   46,   56,   41,  166,   57,   80,
       36,   85,   42,   57,   80,   42,   43,   67,   67,   68,
       81,   68,   68,   77,   77,   78,   78,   56,   82,   82,
       83,   84,   86,   87,   88,   89,   81,   84,   91,   93,
      111,   78,   83,   94,   92,   95,   87,  160,   86,   88,
       96,   97,   89,   92,   95,   91,   93,  111,   94,   96,
       97,  103,  103,  107,  107,  108,  108,  109,  110,  112,
      112,  113,  109,  113,  114,  115,  115,  117,  120,  114,
      119,  121,  123,  110,  122,  125,  123,  124,  128,  129,

      117,  130,  119,  132,  134,  125,  120,  128,  124,  121,
      135,  122,  130,  136,  139,  137,  136,  129,  137,  139,
      132,  134,  141,  143,  142,  135,  145,  146,  143,  147,
      148,  150,  153,  151,  141,  142,  157,  145,  148,  146,
      159,  157,  158,  156,  153,  155,  147,  154,  152,  150,
      151,  162,  162,  162,  162,  163,  149,  163,  163,  164,
      164,  165,  165,  165,  165,  144,  140,  138,  133,  131,
      127,  126,  118,  116,  101,   90,   76,   75,   74,   70,
       65,   51,   49,   32,   28,   25,   14,   11,    9,    8,
        7,    5,    3,  161,  161,  161,  161,  161,  161,  161,

      161,  161,  161,  161,  161,  161,  161,  161,  161,  161,
      161,  161,  161,  161,  161,  161,  161,  161,  161,  161,
      161,  161,  161,  161,  161,  161,  161,  161,  161,  161,
      161,  161,  161,  161,  161,  161,  161,  161,  161,  161,
      161,  161,  161,  161,  161,  161,  161,  161,  161,  161,
      161
    } ;

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
#define yymore() yymore_used_but_not_detected
#define YY_MORE_ADJ 0
#define YY_RESTORE_YY_MORE_OFFSET
char *yytext;
#line 1 "c-.l"
#define INITIAL 0
/*
 *  COMP510-04A  COMPILER
 *  Project for 510  
 *  name:   Yinghao Qin
 *  
 *  username: yq11
 *  ID:   0130348
 *  Date: 16/06/2004
 */
#line 13 "c-.l"
#include "stdio.h"
#include "c-.tab.h"
//char yytext[];
char *getmem(char *); 
void count(); 

//int column = 0;
#line 513 "c-.yy.c"

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