testbed/astropy__astropy/cextern/cfitsio/lib/eval_l.c

#line 3 "<stdout>"

#define  FF_INT_ALIGNED short int

/* A lexical scanner generated by flex */

#define FLEX_SCANNER
#define FF_FLEX_MAJOR_VERSION 2
#define FF_FLEX_MINOR_VERSION 5
#define FF_FLEX_SUBMINOR_VERSION 35
#if FF_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;
#endif /* ! C99 */

/* 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

#endif /* ! FLEXINT_H */

#ifdef __cplusplus

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

#else	/* ! __cplusplus */

/* C99 requires __STDC__ to be defined as 1. */
#if defined (__STDC__)

#define FF_USE_CONST

#endif	/* defined (__STDC__) */
#endif	/* ! __cplusplus */

#ifdef FF_USE_CONST
#define ffconst const
#else
#define ffconst
#endif

/* Returned upon end-of-file. */
#define FF_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 FF_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 (ff_start) = 1 + 2 *

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

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

/* Special action meaning "start processing a new file". */
#define FF_NEW_FILE ffrestart(ffin  )

#define FF_END_OF_BUFFER_CHAR 0

/* Size of default input buffer. */
#ifndef FF_BUF_SIZE
#define FF_BUF_SIZE 16384
#endif

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

#ifndef FF_TYPEDEF_FF_BUFFER_STATE
#define FF_TYPEDEF_FF_BUFFER_STATE
typedef struct ff_buffer_state *FF_BUFFER_STATE;
#endif

extern int ffleng;

extern FILE *ffin, *ffout;

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

    #define FF_LESS_LINENO(n)
    
/* Return all but the first "n" matched characters back to the input stream. */
#define ffless(n) \
	do \
		{ \
		/* Undo effects of setting up fftext. */ \
        int ffless_macro_arg = (n); \
        FF_LESS_LINENO(ffless_macro_arg);\
		*ff_cp = (ff_hold_char); \
		FF_RESTORE_FF_MORE_OFFSET \
		(ff_c_buf_p) = ff_cp = ff_bp + ffless_macro_arg - FF_MORE_ADJ; \
		FF_DO_BEFORE_ACTION; /* set up fftext again */ \
		} \
	while ( 0 )

#define unput(c) ffunput( c, (fftext_ptr)  )

#ifndef FF_TYPEDEF_FF_SIZE_T
#define FF_TYPEDEF_FF_SIZE_T
typedef size_t ff_size_t;
#endif

#ifndef FF_STRUCT_FF_BUFFER_STATE
#define FF_STRUCT_FF_BUFFER_STATE
struct ff_buffer_state
	{
	FILE *ff_input_file;

	char *ff_ch_buf;		/* input buffer */
	char *ff_buf_pos;		/* current position in input buffer */

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

	/* Number of characters read into ff_ch_buf, not including EOB
	 * characters.
	 */
	int ff_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 ff_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 ff_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 ff_at_bol;

    int ff_bs_lineno; /**< The line count. */
    int ff_bs_column; /**< The column count. */
    
	/* Whether to try to fill the input buffer when we reach the
	 * end of it.
	 */
	int ff_fill_buffer;

	int ff_buffer_status;

#define FF_BUFFER_NEW 0
#define FF_BUFFER_NORMAL 1
	/* When an EOF's been seen but there's still some text to process
	 * then we mark the buffer as FF_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 ffrestart()), so that the user can continue scanning by
	 * just pointing ffin at a new input file.
	 */
#define FF_BUFFER_EOF_PENDING 2

	};
#endif /* !FF_STRUCT_FF_BUFFER_STATE */

/* Stack of input buffers. */
static size_t ff_buffer_stack_top = 0; /**< index of top of stack. */
static size_t ff_buffer_stack_max = 0; /**< capacity of stack. */
static FF_BUFFER_STATE * ff_buffer_stack = 0; /**< 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 FF_CURRENT_BUFFER ( (ff_buffer_stack) \
                          ? (ff_buffer_stack)[(ff_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 FF_CURRENT_BUFFER_LVALUE (ff_buffer_stack)[(ff_buffer_stack_top)]

/* ff_hold_char holds the character lost when fftext is formed. */
static char ff_hold_char;
static int ff_n_chars;		/* number of characters read into ff_ch_buf */
int ffleng;

/* Points to current character in buffer. */
static char *ff_c_buf_p = (char *) 0;
static int ff_init = 0;		/* whether we need to initialize */
static int ff_start = 0;	/* start state number */

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

void ffrestart (FILE *input_file  );
void ff_switch_to_buffer (FF_BUFFER_STATE new_buffer  );
FF_BUFFER_STATE ff_create_buffer (FILE *file,int size  );
void ff_delete_buffer (FF_BUFFER_STATE b  );
void ff_flush_buffer (FF_BUFFER_STATE b  );
void ffpush_buffer_state (FF_BUFFER_STATE new_buffer  );
void ffpop_buffer_state (void );

static void ffensure_buffer_stack (void );
static void ff_load_buffer_state (void );
static void ff_init_buffer (FF_BUFFER_STATE b,FILE *file  );

#define FF_FLUSH_BUFFER ff_flush_buffer(FF_CURRENT_BUFFER )

FF_BUFFER_STATE ff_scan_buffer (char *base,ff_size_t size  );
FF_BUFFER_STATE ff_scan_string (ffconst char *ff_str  );
FF_BUFFER_STATE ff_scan_bytes (ffconst char *bytes,int len  );

void *ffalloc (ff_size_t  );
void *ffrealloc (void *,ff_size_t  );
void yyfffree (void *  );

#define ff_new_buffer ff_create_buffer

#define ff_set_interactive(is_interactive) \
	{ \
	if ( ! FF_CURRENT_BUFFER ){ \
        ffensure_buffer_stack (); \
		FF_CURRENT_BUFFER_LVALUE =    \
            ff_create_buffer(ffin,FF_BUF_SIZE ); \
	} \
	FF_CURRENT_BUFFER_LVALUE->ff_is_interactive = is_interactive; \
	}

#define ff_set_bol(at_bol) \
	{ \
	if ( ! FF_CURRENT_BUFFER ){\
        ffensure_buffer_stack (); \
		FF_CURRENT_BUFFER_LVALUE =    \
            ff_create_buffer(ffin,FF_BUF_SIZE ); \
	} \
	FF_CURRENT_BUFFER_LVALUE->ff_at_bol = at_bol; \
	}

#define FF_AT_BOL() (FF_CURRENT_BUFFER_LVALUE->ff_at_bol)

/* Begin user sect3 */

typedef unsigned char FF_CHAR;

FILE *ffin = (FILE *) 0, *ffout = (FILE *) 0;

typedef int ff_state_type;

extern int fflineno;

int fflineno = 1;

extern char *fftext;
#define fftext_ptr fftext

static ff_state_type ff_get_previous_state (void );
static ff_state_type ff_try_NUL_trans (ff_state_type current_state  );
static int ff_get_next_buffer (void );
static void ff_fatal_error (ffconst char msg[]  );

/* Done after the current pattern has been matched and before the
 * corresponding action - sets up fftext.
 */
#define FF_DO_BEFORE_ACTION \
	(fftext_ptr) = ff_bp; \
	ffleng = (size_t) (ff_cp - ff_bp); \
	(ff_hold_char) = *ff_cp; \
	*ff_cp = '\0'; \
	(ff_c_buf_p) = ff_cp;

#define FF_NUM_RULES 26
#define FF_END_OF_BUFFER 27
/* This struct is not used in this scanner,
   but its presence is necessary. */
struct ff_trans_info
	{
	flex_int32_t ff_verify;
	flex_int32_t ff_nxt;
	};
static ffconst flex_int16_t ff_accept[160] =
    {   0,
        0,    0,   27,   25,    1,   24,   15,   25,   25,   25,
       25,   25,   25,   25,    7,    5,   21,   25,   20,   10,
       10,   10,   10,    6,   10,   10,   10,   10,   10,   14,
       10,   10,   10,   10,   10,   10,   10,   25,    1,   19,
        0,    9,    0,    8,    0,   10,   17,    0,    0,    0,
        0,    0,    0,    0,   14,    0,    7,    0,    0,    0,
        0,    0,    0,    0,    0,    0,    0,    0,    0,    7,
        5,    0,   23,   18,   22,   10,   10,   10,    2,   10,
       10,   10,    4,   10,   10,   10,   10,    3,   10,   10,
       10,   10,   10,   10,   10,   10,   10,   10,   16,    0,

        8,    0,    0,    0,    0,    0,    0,    0,    0,    0,
        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
        0,    0,    0,    0,    0,    0,    0,    7,   11,   10,
       20,   21,   10,   10,   10,    0,    0,    0,    0,    0,
        0,    0,    0,    0,    0,   15,    0,    0,   12,    0,
        0,    0,    0,    0,    0,    0,   13,    0,    0
    } ;

static ffconst flex_int32_t ff_ec[256] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    2,    4,    5,    6,    7,    1,    8,    9,   10,
       11,   12,   13,    1,   13,   14,    1,   15,   15,   16,
       16,   16,   16,   16,   16,   17,   17,    1,    1,   18,
       19,   20,    1,    1,   21,   22,   23,   24,   25,   26,
       27,   28,   29,   30,   30,   31,   30,   32,   33,   30,
       34,   35,   30,   36,   37,   30,   30,   38,   30,   30,
        1,    1,    1,   39,   40,    1,   41,   42,   23,   43,

       44,   45,   46,   28,   47,   30,   30,   48,   30,   49,
       50,   30,   51,   52,   30,   53,   54,   30,   30,   38,
       30,   30,    1,   55,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,

        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    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 ffconst flex_int32_t ff_meta[56] =
    {   0,
        1,    1,    2,    1,    1,    1,    3,    1,    1,    1,
        1,    1,    1,    1,    4,    4,    4,    1,    1,    1,
        4,    4,    4,    4,    4,    4,    4,    4,    4,    4,
        4,    4,    4,    4,    4,    4,    4,    4,    1,    4,
        4,    4,    4,    4,    4,    4,    4,    4,    4,    4,
        4,    4,    4,    4,    1
    } ;

static ffconst flex_int16_t ff_base[167] =
    {   0,
        0,    0,  367,  368,  364,  368,  346,  359,  356,  355,
      353,  351,   32,  347,   66,  103,  339,   44,  338,   25,
       52,  316,   26,  315,   34,  133,   48,   61,  125,  368,
        0,   29,   45,   60,   81,   82,   93,  299,  351,  368,
      347,  368,  344,  343,  342,  368,  368,  339,  314,  315,
      313,  294,  295,  293,  368,  121,  164,  307,  301,   70,
      117,   43,  296,  276,  271,   58,   86,   79,  269,  152,
      168,  181,  368,  368,  368,  151,  162,    0,  180,  189,
      190,  191,  309,  196,  199,  205,  204,  211,  214,  207,
      223,  224,  232,  238,  243,  245,  222,  246,  368,  311,

      310,  279,  282,  278,  259,  262,  258,  252,  286,  295,
      294,  293,  292,  291,  290,  267,  288,  258,  285,  284,
      278,  270,  268,  259,  218,  252,  264,  272,  368,  251,
      368,  368,  260,  280,  283,  236,  222,  230,  193,  184,
      212,  208,  202,  173,  156,  368,  133,  126,  368,  104,
       98,  119,  132,   80,   94,   92,  368,   78,  368,  323,
      325,  329,  333,   68,   67,  337
    } ;

static ffconst flex_int16_t ff_def[167] =
    {   0,
      159,    1,  159,  159,  159,  159,  159,  160,  161,  162,
      159,  163,  159,  159,  159,  159,  159,  159,  159,  164,
      164,  164,  164,  164,  164,  164,  164,  164,  164,  159,
      165,  164,  164,  164,  164,  164,  164,  159,  159,  159,
      160,  159,  166,  161,  162,  159,  159,  163,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  164,  164,  165,  164,  164,
      164,  164,   26,  164,  164,  164,  164,  164,  164,  164,
      164,  164,  164,  164,  164,  164,  164,  164,  159,  166,

      166,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  164,
      159,  159,  164,  164,  164,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,    0,  159,
      159,  159,  159,  159,  159,  159
    } ;

static ffconst flex_int16_t ff_nxt[424] =
    {   0,
        4,    5,    6,    7,    8,    9,   10,   11,   12,   13,
        4,   14,    4,   15,   16,   16,   16,   17,   18,   19,
       20,   21,   22,   22,   23,   24,   25,   26,   22,   22,
       27,   28,   29,   22,   22,   24,   22,   22,   30,   31,
       32,   21,   22,   33,   24,   34,   22,   35,   36,   37,
       22,   22,   24,   22,   38,   49,   77,   50,   81,   80,
       51,   73,   74,   75,   78,   78,   79,  115,   78,   82,
       78,   76,   84,   78,   52,  116,   53,   90,   54,   56,
       57,   57,   57,   85,   78,   86,   58,   78,  157,   79,
       59,   78,   60,   87,  111,   91,   61,   62,   63,   78,

       78,  120,  157,   92,  157,  112,   64,   88,   88,   65,
      121,   66,   93,   67,   68,   69,   70,   71,   71,   71,
       78,   78,  124,  158,   94,   96,   72,   72,  125,  122,
       88,   97,   78,   95,   56,  108,  108,  108,  123,   88,
       88,  113,  157,  156,   98,   72,   72,   83,   83,   83,
      155,  154,  114,   83,   83,   83,   83,   83,   83,   89,
      129,  153,   88,  152,   78,   56,   57,   57,   57,  146,
       83,  129,   78,   83,   83,   83,   83,   83,   57,   57,
       57,   70,   71,   71,   71,  130,   47,   72,   72,  129,
       78,   72,   72,  127,   79,  128,  128,  128,  129,  129,

      129,   78,   74,   75,  131,  129,   72,   72,  129,   73,
       72,   72,  132,  129,  129,  146,  129,   79,   40,   78,
      129,   47,  149,  129,  151,   88,   88,   99,   78,   78,
       78,  129,  129,  129,  150,   78,   74,   75,   78,  133,
      149,  129,  148,   78,   78,  131,   78,  129,   88,  134,
       78,   73,  129,   78,  129,  129,  132,  147,   40,   99,
      129,   78,   78,   78,   47,   99,  108,  108,  108,  129,
      145,   78,   40,  146,  135,   72,   72,   78,  128,  128,
      128,  132,   78,   73,   78,   78,  128,  128,  128,  129,
       78,  131,  129,   47,   72,   72,  146,   75,   74,   78,

      144,   99,  143,   40,  132,   73,  131,   75,   74,  142,
      141,  140,  139,  138,  137,  136,  101,  101,  129,   78,
      126,  119,   78,   41,  118,   41,   41,   44,   44,   45,
      117,   45,   45,   48,  110,   48,   48,  100,  109,  100,
      100,  107,  106,  105,  104,  103,  102,   42,   46,  159,
      101,   42,   39,   99,   78,   78,   75,   73,   55,   42,
       47,   46,   43,   42,   40,   39,  159,    3,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,

      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159
    } ;

static ffconst flex_int16_t ff_chk[424] =
    {   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,   13,   20,   13,   25,   23,
       13,   18,   18,   18,   20,   23,   21,   62,   32,   25,
      165,  164,   27,   25,   13,   62,   13,   32,   13,   15,
       15,   15,   15,   27,   33,   28,   15,   27,  158,   21,
       15,   21,   15,   28,   60,   33,   15,   15,   15,   34,

       28,   66,  156,   34,  155,   60,   15,   37,   37,   15,
       66,   15,   34,   15,   15,   15,   16,   16,   16,   16,
       35,   36,   68,  154,   35,   36,   16,   16,   68,   67,
       37,   36,   37,   35,   56,   56,   56,   56,   67,   29,
       29,   61,  153,  152,   37,   16,   16,   26,   26,   26,
      151,  150,   61,   26,   26,   26,   26,   26,   26,   29,
       76,  148,   29,  147,   29,   70,   70,   70,   70,  145,
       26,   77,   26,   26,   26,   26,   26,   26,   57,   57,
       57,   71,   71,   71,   71,   77,  144,   57,   57,   79,
       76,   71,   71,   72,   79,   72,   72,   72,   80,   81,

       82,   77,   80,   81,   82,   84,   57,   57,   85,   84,
       71,   71,   85,   87,   86,  143,   90,   79,   86,   79,
       88,  142,  141,   89,  140,   88,   88,   89,   80,   81,
       82,   97,   91,   92,  139,   84,   91,   92,   85,   87,
      138,   93,  137,   87,   86,   93,   90,   94,   88,   90,
       88,   94,   95,   89,   96,   98,   95,  136,   96,   98,
      130,   97,   91,   92,  130,  126,  108,  108,  108,  133,
      125,   93,  124,  133,   97,  108,  108,   94,  127,  127,
      127,  123,   95,  122,   96,   98,  128,  128,  128,  134,
      130,  121,  135,  134,  108,  108,  135,  120,  119,  133,

      118,  117,  116,  115,  114,  113,  112,  111,  110,  109,
      107,  106,  105,  104,  103,  102,  101,  100,   83,  134,
       69,   65,  135,  160,   64,  160,  160,  161,  161,  162,
       63,  162,  162,  163,   59,  163,  163,  166,   58,  166,
      166,   54,   53,   52,   51,   50,   49,   48,   45,   44,
       43,   41,   39,   38,   24,   22,   19,   17,   14,   12,
       11,   10,    9,    8,    7,    5,    3,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,

      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159,  159,  159,  159,  159,  159,  159,  159,
      159,  159,  159
    } ;

static ff_state_type ff_last_accepting_state;
static char *ff_last_accepting_cpos;

extern int ff_flex_debug;
int ff_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 ffmore() ffmore_used_but_not_detected
#define FF_MORE_ADJ 0
#define FF_RESTORE_FF_MORE_OFFSET
char *fftext;
#line 1 "eval.l"
#line 2 "eval.l"
/************************************************************************/
/*                                                                      */
/*                       CFITSIO Lexical Parser                         */
/*                                                                      */
/* This file is one of 3 files containing code which parses an          */
/* arithmetic expression and evaluates it in the context of an input    */
/* FITS file table extension.  The CFITSIO lexical parser is divided    */
/* into the following 3 parts/files: the CFITSIO "front-end",           */
/* eval_f.c, contains the interface between the user/CFITSIO and the    */
/* real core of the parser; the FLEX interpreter, eval_l.c, takes the   */
/* input string and parses it into tokens and identifies the FITS       */
/* information required to evaluate the expression (ie, keywords and    */
/* columns); and, the BISON grammar and evaluation routines, eval_y.c,  */
/* receives the FLEX output and determines and performs the actual      */
/* operations.  The files eval_l.c and eval_y.c are produced from       */
/* running flex and bison on the files eval.l and eval.y, respectively. */
/* (flex and bison are available from any GNU archive: see www.gnu.org) */
/*                                                                      */
/* The grammar rules, rather than evaluating the expression in situ,    */
/* builds a tree, or Nodal, structure mapping out the order of          */
/* operations and expression dependencies.  This "compilation" process  */
/* allows for much faster processing of multiple rows.  This technique  */
/* was developed by Uwe Lammers of the XMM Science Analysis System,     */
/* although the CFITSIO implementation is entirely code original.       */
/*                                                                      */
/*                                                                      */
/* Modification History:                                                */
/*                                                                      */
/*   Kent Blackburn      c1992  Original parser code developed for the  */
/*                              FTOOLS software package, in particular, */
/*                              the fselect task.                       */
/*   Kent Blackburn      c1995  BIT column support added                */
/*   Peter D Wilson   Feb 1998  Vector column support added             */
/*   Peter D Wilson   May 1998  Ported to CFITSIO library.  User        */
/*                              interface routines written, in essence  */
/*                              making fselect, fcalc, and maketime     */
/*                              capabilities available to all tools     */
/*                              via single function calls.              */
/*   Peter D Wilson   Jun 1998  Major rewrite of parser core, so as to  */
/*                              create a run-time evaluation tree,      */
/*                              inspired by the work of Uwe Lammers,    */
/*                              resulting in a speed increase of        */
/*                              10-100 times.                           */
/*   Peter D Wilson   Jul 1998  gtifilter(a,b,c,d) function added       */
/*   Peter D Wilson   Aug 1998  regfilter(a,b,c,d) function added       */
/*   Peter D Wilson   Jul 1999  Make parser fitsfile-independent,       */
/*                              allowing a purely vector-based usage    */
/*                                                                      */
/************************************************************************/

#include <math.h>
#include <string.h>
#include <ctype.h>
#ifdef sparc
#include <malloc.h>
#else
#include <stdlib.h>
#endif
#include "eval_defs.h"

ParseData gParse;     /* Global structure holding all parser information     */

/*****  Internal functions  *****/

       int ffGetVariable( char *varName, FFSTYPE *varVal );

static int find_variable( char *varName );
static int expr_read( char *buf, int nbytes );

/*****  Definitions  *****/

#define FF_NO_UNPUT   /*  Don't include FFUNPUT function  */
#define FF_NEVER_INTERACTIVE 1

#define MAXCHR 256
#define MAXBIT 128

#define OCT_0 "000"
#define OCT_1 "001"
#define OCT_2 "010"
#define OCT_3 "011"
#define OCT_4 "100"
#define OCT_5 "101"
#define OCT_6 "110"
#define OCT_7 "111"
#define OCT_X "xxx"

#define HEX_0 "0000"
#define HEX_1 "0001"
#define HEX_2 "0010"
#define HEX_3 "0011"
#define HEX_4 "0100"
#define HEX_5 "0101"
#define HEX_6 "0110"
#define HEX_7 "0111"
#define HEX_8 "1000"
#define HEX_9 "1001"
#define HEX_A "1010"
#define HEX_B "1011"
#define HEX_C "1100"
#define HEX_D "1101"
#define HEX_E "1110"
#define HEX_F "1111"
#define HEX_X "xxxx"

/* 
   MJT - 13 June 1996
   read from buffer instead of stdin
   (as per old ftools.skel)
*/
#undef FF_INPUT
#define FF_INPUT(buf,result,max_size) \
        if ( (result = expr_read( (char *) buf, max_size )) < 0 ) \
            FF_FATAL_ERROR( "read() in flex scanner failed" );

#line 712 "<stdout>"

#define INITIAL 0

#ifndef FF_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 FF_EXTRA_TYPE
#define FF_EXTRA_TYPE void *
#endif

static int ff_init_globals (void );

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

int fflex_destroy (void );

int ffget_debug (void );

void ffset_debug (int debug_flag  );

FF_EXTRA_TYPE ffget_extra (void );

void ffset_extra (FF_EXTRA_TYPE user_defined  );

FILE *ffget_in (void );

void ffset_in  (FILE * in_str  );

FILE *ffget_out (void );

void ffset_out  (FILE * out_str  );

int ffget_leng (void );

char *ffget_text (void );

int ffget_lineno (void );

void ffset_lineno (int line_number  );

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

#ifndef FF_SKIP_FFWRAP
#ifdef __cplusplus
extern "C" int ffwrap (void );
#else
extern int ffwrap (void );
#endif
#endif

    static void ffunput (int c,char *buf_ptr  );
    
#ifndef fftext_ptr
static void ff_flex_strncpy (char *,ffconst char *,int );
#endif

#ifdef FF_NEED_STRLEN
static int ff_flex_strlen (ffconst char * );
#endif

#ifndef FF_NO_INPUT

#ifdef __cplusplus
static int ffinput (void );
#else
static int input (void );
#endif

#endif

/* Amount of stuff to slurp up with each read. */
#ifndef FF_READ_BUF_SIZE
#define FF_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 do { if (fwrite( fftext, ffleng, 1, ffout )) {} } while (0)
#endif

/* Gets input and stuffs it into "buf".  number of characters read, or FF_NULL,
 * is returned in "result".
 */
#ifndef FF_INPUT
#define FF_INPUT(buf,result,max_size) \
	if ( FF_CURRENT_BUFFER_LVALUE->ff_is_interactive ) \
		{ \
		int c = '*'; \
		unsigned n; \
		for ( n = 0; n < max_size && \
			     (c = getc( ffin )) != EOF && c != '\n'; ++n ) \
			buf[n] = (char) c; \
		if ( c == '\n' ) \
			buf[n++] = (char) c; \
		if ( c == EOF && ferror( ffin ) ) \
			FF_FATAL_ERROR( "input in flex scanner failed" ); \
		result = n; \
		} \
	else \
		{ \
		errno=0; \
		while ( (result = fread(buf, 1, max_size, ffin))==0 && ferror(ffin)) \
			{ \
			if( errno != EINTR) \
				{ \
				FF_FATAL_ERROR( "input in flex scanner failed" ); \
				break; \
				} \
			errno=0; \
			clearerr(ffin); \
			} \
		}\
\

#endif

/* No semi-colon after return; correct usage is to write "ffterminate();" -
 * we don't want an extra ';' after the "return" because that will cause
 * some compilers to complain about unreachable statements.
 */
#ifndef ffterminate
#define ffterminate() return FF_NULL
#endif

/* Number of entries by which start-condition stack grows. */
#ifndef FF_START_STACK_INCR
#define FF_START_STACK_INCR 25
#endif

/* Report a fatal error. */
#ifndef FF_FATAL_ERROR
#define FF_FATAL_ERROR(msg) ff_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 FF_DECL
#define FF_DECL_IS_OURS 1

extern int fflex (void);

#define FF_DECL int fflex (void)
#endif /* !FF_DECL */

/* Code executed at the beginning of each rule, after fftext and ffleng
 * have been set up.
 */
#ifndef FF_USER_ACTION
#define FF_USER_ACTION
#endif

/* Code executed at the end of each rule. */
#ifndef FF_BREAK
#define FF_BREAK break;
#endif

#define FF_RULE_SETUP \
	FF_USER_ACTION

/** The main scanner function which does all the work.
 */
FF_DECL
{
	register ff_state_type ff_current_state;
	register char *ff_cp, *ff_bp;
	register int ff_act;
    
#line 142 "eval.l"


#line 897 "<stdout>"

	if ( !(ff_init) )
		{
		(ff_init) = 1;

#ifdef FF_USER_INIT
		FF_USER_INIT;
#endif

		if ( ! (ff_start) )
			(ff_start) = 1;	/* first start state */

		if ( ! ffin )
			ffin = stdin;

		if ( ! ffout )
			ffout = stdout;

		if ( ! FF_CURRENT_BUFFER ) {
			ffensure_buffer_stack ();
			FF_CURRENT_BUFFER_LVALUE =
				ff_create_buffer(ffin,FF_BUF_SIZE );
		}

		ff_load_buffer_state( );
		}

	while ( 1 )		/* loops until end-of-file is reached */
		{
		ff_cp = (ff_c_buf_p);

		/* Support of fftext. */
		*ff_cp = (ff_hold_char);

		/* ff_bp points to the position in ff_ch_buf of the start of
		 * the current run.
		 */
		ff_bp = ff_cp;

		ff_current_state = (ff_start);
ff_match:
		do
			{
			register FF_CHAR ff_c = ff_ec[FF_SC_TO_UI(*ff_cp)];
			if ( ff_accept[ff_current_state] )
				{
				(ff_last_accepting_state) = ff_current_state;
				(ff_last_accepting_cpos) = ff_cp;
				}
			while ( ff_chk[ff_base[ff_current_state] + ff_c] != ff_current_state )
				{
				ff_current_state = (int) ff_def[ff_current_state];
				if ( ff_current_state >= 160 )
					ff_c = ff_meta[(unsigned int) ff_c];
				}
			ff_current_state = ff_nxt[ff_base[ff_current_state] + (unsigned int) ff_c];
			++ff_cp;
			}
		while ( ff_base[ff_current_state] != 368 );

ff_find_action:
		ff_act = ff_accept[ff_current_state];
		if ( ff_act == 0 )
			{ /* have to back up */
			ff_cp = (ff_last_accepting_cpos);
			ff_current_state = (ff_last_accepting_state);
			ff_act = ff_accept[ff_current_state];
			}

		FF_DO_BEFORE_ACTION;

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

		switch ( ff_act )
	{ /* beginning of action switch */
			case 0: /* must back up */
			/* undo the effects of FF_DO_BEFORE_ACTION */
			*ff_cp = (ff_hold_char);
			ff_cp = (ff_last_accepting_cpos);
			ff_current_state = (ff_last_accepting_state);
			goto ff_find_action;

case 1:
FF_RULE_SETUP
#line 144 "eval.l"
;
	FF_BREAK
case 2:
FF_RULE_SETUP
#line 145 "eval.l"
{
                  int len;
                  len = strlen(fftext);
		  while (fftext[len] == ' ')
			len--;
                  len = len - 1;
		  strncpy(fflval.str,&fftext[1],len);
		  fflval.str[len] = '\0';
		  return( BITSTR );
		}
	FF_BREAK
case 3:
FF_RULE_SETUP
#line 155 "eval.l"
{
                  int len;
                  char tmpstring[256];
                  char bitstring[256];
                  len = strlen(fftext);
		  if (len >= 256) {
		    char errMsg[100];
		    gParse.status = PARSE_SYNTAX_ERR;
		    strcpy (errMsg,"Bit string exceeds maximum length: '");
		    strncat(errMsg, &(fftext[0]), 20);
		    strcat (errMsg,"...'");
		    ffpmsg (errMsg);
		    len = 0;
		  } else {
		    while (fftext[len] == ' ')
		      len--;
		    len = len - 1;
		    strncpy(tmpstring,&fftext[1],len);
		  }
                  tmpstring[len] = '\0';
                  bitstring[0] = '\0';
		  len = 0;
                  while ( tmpstring[len] != '\0')
                       {
			switch ( tmpstring[len] )
			      {
			       case '0':
					strcat(bitstring,OCT_0);
					break;
			       case '1':
					strcat(bitstring,OCT_1);
					break;
			       case '2':
					strcat(bitstring,OCT_2);
					break;
			       case '3':
					strcat(bitstring,OCT_3);
					break;
			       case '4':
					strcat(bitstring,OCT_4);
					break;
			       case '5':
					strcat(bitstring,OCT_5);
					break;
			       case '6':
					strcat(bitstring,OCT_6);
					break;
			       case '7':
					strcat(bitstring,OCT_7);
					break;
			       case 'x':
			       case 'X':
					strcat(bitstring,OCT_X);
					break;
			      }
			len++;
                       }
                  strcpy( fflval.str, bitstring );
		  return( BITSTR );
		}
	FF_BREAK
case 4:
FF_RULE_SETUP
#line 215 "eval.l"
{
                  int len;
                  char tmpstring[256];
                  char bitstring[256];
                  len = strlen(fftext);
		  if (len >= 256) {
		    char errMsg[100];
		    gParse.status = PARSE_SYNTAX_ERR;
		    strcpy (errMsg,"Hex string exceeds maximum length: '");
		    strncat(errMsg, &(fftext[0]), 20);
		    strcat (errMsg,"...'");
		    ffpmsg (errMsg);
		    len = 0;
		  } else {
		    while (fftext[len] == ' ')
		      len--;
		    len = len - 1;
		    strncpy(tmpstring,&fftext[1],len);
		  }
                  tmpstring[len] = '\0';
                  bitstring[0] = '\0';
		  len = 0;
                  while ( tmpstring[len] != '\0')
                       {
			switch ( tmpstring[len] )
			      {
			       case '0':
					strcat(bitstring,HEX_0);
					break;
			       case '1':
					strcat(bitstring,HEX_1);
					break;
			       case '2':
					strcat(bitstring,HEX_2);
					break;
			       case '3':
					strcat(bitstring,HEX_3);
					break;
			       case '4':
					strcat(bitstring,HEX_4);
					break;
			       case '5':
					strcat(bitstring,HEX_5);
					break;
			       case '6':
					strcat(bitstring,HEX_6);
					break;
			       case '7':
					strcat(bitstring,HEX_7);
					break;
			       case '8':
					strcat(bitstring,HEX_8);
					break;
			       case '9':
					strcat(bitstring,HEX_9);
					break;
			       case 'a':
			       case 'A':
					strcat(bitstring,HEX_A);
					break;
			       case 'b':
			       case 'B':
					strcat(bitstring,HEX_B);
					break;
			       case 'c':
			       case 'C':
					strcat(bitstring,HEX_C);
					break;
			       case 'd':
			       case 'D':
					strcat(bitstring,HEX_D);
					break;
			       case 'e':
			       case 'E':
					strcat(bitstring,HEX_E);
					break;
			       case 'f':
			       case 'F':
					strcat(bitstring,HEX_F);
					break;
			       case 'x':
			       case 'X':
					strcat(bitstring,HEX_X);
					break;
			      }
			len++;
                       }

                  strcpy( fflval.str, bitstring );
		  return( BITSTR );
		}
	FF_BREAK
case 5:
FF_RULE_SETUP
#line 306 "eval.l"
{
                  fflval.lng = atol(fftext);
		  return( LONG );
		}
	FF_BREAK
case 6:
FF_RULE_SETUP
#line 310 "eval.l"
{
                  if ((fftext[0] == 't') || (fftext[0] == 'T'))
		    fflval.log = 1;
		  else
		    fflval.log = 0;
		  return( BOOLEAN );
		}
	FF_BREAK
case 7:
FF_RULE_SETUP
#line 317 "eval.l"
{
                  fflval.dbl = atof(fftext);
		  return( DOUBLE );
		}
	FF_BREAK
case 8:
FF_RULE_SETUP
#line 321 "eval.l"
{
                  if(        !fits_strcasecmp(fftext,"#PI") ) {
		     fflval.dbl = (double)(4) * atan((double)(1));
		     return( DOUBLE );
		  } else if( !fits_strcasecmp(fftext,"#E") ) {
		     fflval.dbl = exp((double)(1));
		     return( DOUBLE );
		  } else if( !fits_strcasecmp(fftext,"#DEG") ) {
		     fflval.dbl = ((double)4)*atan((double)1)/((double)180);
		     return( DOUBLE );
		  } else if( !fits_strcasecmp(fftext,"#ROW") ) {
		     return( ROWREF );
		  } else if( !fits_strcasecmp(fftext,"#NULL") ) {
		     return( NULLREF );
		  } else if( !fits_strcasecmp(fftext,"#SNULL") ) {
		     return( SNULLREF );
		  } else {
                     int len; 
                     if (fftext[1] == '$') {
                        len = strlen(fftext) - 3;
                        fflval.str[0]     = '#';
                        strncpy(fflval.str+1,&fftext[2],len);
                        fflval.str[len+1] = '\0';
                        fftext = fflval.str;
		     }
                     return( (*gParse.getData)(fftext, &fflval) );
                  }
                }
	FF_BREAK
case 9:
FF_RULE_SETUP
#line 349 "eval.l"
{
                  int len;
                  len = strlen(fftext) - 2;
		  if (len >= MAX_STRLEN) {
		    char errMsg[100];
		    gParse.status = PARSE_SYNTAX_ERR;
		    strcpy (errMsg,"String exceeds maximum length: '");
		    strncat(errMsg, &(fftext[1]), 20);
		    strcat (errMsg,"...'");
		    ffpmsg (errMsg);
		    len = 0;
		  } else {
		    strncpy(fflval.str,&fftext[1],len);
		  }
		  fflval.str[len] = '\0';
		  return( STRING );
		}
	FF_BREAK
case 10:
FF_RULE_SETUP
#line 366 "eval.l"
{
		 int    len,type;

                 if (fftext[0] == '$') {
		    len = strlen(fftext) - 2;
		    strncpy(fflval.str,&fftext[1],len);
		    fflval.str[len] = '\0';
		    fftext = fflval.str;
		 } 
		 type = ffGetVariable(fftext, &fflval);
		 return( type );
		}
	FF_BREAK
case 11:
FF_RULE_SETUP
#line 378 "eval.l"
{
                  char *fname;
		  int len=0;
                  fname = &fflval.str[0];
		  while( (fname[len]=toupper(fftext[len])) ) len++;

                  if(      FSTRCMP(fname,"BOX(")==0 
                        || FSTRCMP(fname,"CIRCLE(")==0 
                        || FSTRCMP(fname,"ELLIPSE(")==0 
                        || FSTRCMP(fname,"NEAR(")==0 
                        || FSTRCMP(fname,"ISNULL(")==0 
                         )
                     /* Return type is always boolean  */
		     return( BFUNCTION );

                  else if( FSTRCMP(fname,"GTIFILTER(")==0 )
                     return( GTIFILTER );

                  else if( FSTRCMP(fname,"REGFILTER(")==0 )
                     return( REGFILTER );

                  else if( FSTRCMP(fname,"STRSTR(")==0 )
                     return( IFUNCTION );  /* Returns integer */

                  else 
		     return( FUNCTION  );
		}
	FF_BREAK
case 12:
FF_RULE_SETUP
#line 405 "eval.l"
{ return( INTCAST ); }
	FF_BREAK
case 13:
FF_RULE_SETUP
#line 406 "eval.l"
{ return( FLTCAST ); }
	FF_BREAK
case 14:
FF_RULE_SETUP
#line 407 "eval.l"
{ return( POWER   ); }
	FF_BREAK
case 15:
FF_RULE_SETUP
#line 408 "eval.l"
{ return( NOT     ); }
	FF_BREAK
case 16:
FF_RULE_SETUP
#line 409 "eval.l"
{ return( OR      ); }
	FF_BREAK
case 17:
FF_RULE_SETUP
#line 410 "eval.l"
{ return( AND     ); }
	FF_BREAK
case 18:
FF_RULE_SETUP
#line 411 "eval.l"
{ return( EQ      ); }
	FF_BREAK
case 19:
FF_RULE_SETUP
#line 412 "eval.l"
{ return( NE      ); }
	FF_BREAK
case 20:
FF_RULE_SETUP
#line 413 "eval.l"
{ return( GT      ); }
	FF_BREAK
case 21:
FF_RULE_SETUP
#line 414 "eval.l"
{ return( LT      ); }
	FF_BREAK
case 22:
FF_RULE_SETUP
#line 415 "eval.l"
{ return( GTE     ); }
	FF_BREAK
case 23:
FF_RULE_SETUP
#line 416 "eval.l"
{ return( LTE     ); }
	FF_BREAK
case 24:
/* rule 24 can match eol */
FF_RULE_SETUP
#line 417 "eval.l"
{ return( '\n'    ); }
	FF_BREAK
case 25:
FF_RULE_SETUP
#line 418 "eval.l"
{ return( fftext[0] ); }
	FF_BREAK
case 26:
FF_RULE_SETUP
#line 419 "eval.l"
ECHO;
	FF_BREAK
#line 1361 "<stdout>"
case FF_STATE_EOF(INITIAL):
	ffterminate();

	case FF_END_OF_BUFFER:
		{
		/* Amount of text matched not including the EOB char. */
		int ff_amount_of_matched_text = (int) (ff_cp - (fftext_ptr)) - 1;

		/* Undo the effects of FF_DO_BEFORE_ACTION. */
		*ff_cp = (ff_hold_char);
		FF_RESTORE_FF_MORE_OFFSET

		if ( FF_CURRENT_BUFFER_LVALUE->ff_buffer_status == FF_BUFFER_NEW )
			{
			/* We're scanning a new file or input source.  It's
			 * possible that this happened because the user
			 * just pointed ffin at a new source and called
			 * fflex().  If so, then we have to assure
			 * consistency between FF_CURRENT_BUFFER and our
			 * globals.  Here is the right place to do so, because
			 * this is the first action (other than possibly a
			 * back-up) that will match for the new input source.
			 */
			(ff_n_chars) = FF_CURRENT_BUFFER_LVALUE->ff_n_chars;
			FF_CURRENT_BUFFER_LVALUE->ff_input_file = ffin;
			FF_CURRENT_BUFFER_LVALUE->ff_buffer_status = FF_BUFFER_NORMAL;
			}

		/* Note that here we test for ff_c_buf_p "<=" to the position
		 * of the first EOB in the buffer, since ff_c_buf_p will
		 * already have been incremented past the NUL character
		 * (since all states make transitions on EOB to the
		 * end-of-buffer state).  Contrast this with the test
		 * in input().
		 */
		if ( (ff_c_buf_p) <= &FF_CURRENT_BUFFER_LVALUE->ff_ch_buf[(ff_n_chars)] )
			{ /* This was really a NUL. */
			ff_state_type ff_next_state;

			(ff_c_buf_p) = (fftext_ptr) + ff_amount_of_matched_text;

			ff_current_state = ff_get_previous_state(  );

			/* Okay, we're now positioned to make the NUL
			 * transition.  We couldn't have
			 * ff_get_previous_state() go ahead and do it
			 * for us because it doesn't know how to deal
			 * with the possibility of jamming (and we don't
			 * want to build jamming into it because then it
			 * will run more slowly).
			 */

			ff_next_state = ff_try_NUL_trans( ff_current_state );

			ff_bp = (fftext_ptr) + FF_MORE_ADJ;

			if ( ff_next_state )
				{
				/* Consume the NUL. */
				ff_cp = ++(ff_c_buf_p);
				ff_current_state = ff_next_state;
				goto ff_match;
				}

			else
				{
				ff_cp = (ff_c_buf_p);
				goto ff_find_action;
				}
			}

		else switch ( ff_get_next_buffer(  ) )
			{
			case EOB_ACT_END_OF_FILE:
				{
				(ff_did_buffer_switch_on_eof) = 0;

				if ( ffwrap( ) )
					{
					/* Note: because we've taken care in
					 * ff_get_next_buffer() to have set up
					 * fftext, we can now set up
					 * ff_c_buf_p so that if some total
					 * hoser (like flex itself) wants to
					 * call the scanner after we return the
					 * FF_NULL, it'll still work - another
					 * FF_NULL will get returned.
					 */
					(ff_c_buf_p) = (fftext_ptr) + FF_MORE_ADJ;

					ff_act = FF_STATE_EOF(FF_START);
					goto do_action;
					}

				else
					{
					if ( ! (ff_did_buffer_switch_on_eof) )
						FF_NEW_FILE;
					}
				break;
				}

			case EOB_ACT_CONTINUE_SCAN:
				(ff_c_buf_p) =
					(fftext_ptr) + ff_amount_of_matched_text;

				ff_current_state = ff_get_previous_state(  );

				ff_cp = (ff_c_buf_p);
				ff_bp = (fftext_ptr) + FF_MORE_ADJ;
				goto ff_match;

			case EOB_ACT_LAST_MATCH:
				(ff_c_buf_p) =
				&FF_CURRENT_BUFFER_LVALUE->ff_ch_buf[(ff_n_chars)];

				ff_current_state = ff_get_previous_state(  );

				ff_cp = (ff_c_buf_p);
				ff_bp = (fftext_ptr) + FF_MORE_ADJ;
				goto ff_find_action;
			}
		break;
		}

	default:
		FF_FATAL_ERROR(
			"fatal flex scanner internal error--no action found" );
	} /* end of action switch */
		} /* end of scanning one token */
} /* end of fflex */

/* ff_get_next_buffer - try to read in a new buffer
 *
 * Returns a code representing an action:
 *	EOB_ACT_LAST_MATCH -
 *	EOB_ACT_CONTINUE_SCAN - continue scanning from current position
 *	EOB_ACT_END_OF_FILE - end of file
 */
static int ff_get_next_buffer (void)
{
    	register char *dest = FF_CURRENT_BUFFER_LVALUE->ff_ch_buf;
	register char *source = (fftext_ptr);
	register int number_to_move, i;
	int ret_val;

	if ( (ff_c_buf_p) > &FF_CURRENT_BUFFER_LVALUE->ff_ch_buf[(ff_n_chars) + 1] )
		FF_FATAL_ERROR(
		"fatal flex scanner internal error--end of buffer missed" );

	if ( FF_CURRENT_BUFFER_LVALUE->ff_fill_buffer == 0 )
		{ /* Don't try to fill the buffer, so this is an EOF. */
		if ( (ff_c_buf_p) - (fftext_ptr) - FF_MORE_ADJ == 1 )
			{
			/* We matched a single character, the EOB, so
			 * treat this as a final EOF.
			 */
			return EOB_ACT_END_OF_FILE;
			}

		else
			{
			/* We matched some text prior to the EOB, first
			 * process it.
			 */
			return EOB_ACT_LAST_MATCH;
			}
		}

	/* Try to read more data. */

	/* First move last chars to start of buffer. */
	number_to_move = (int) ((ff_c_buf_p) - (fftext_ptr)) - 1;

	for ( i = 0; i < number_to_move; ++i )
		*(dest++) = *(source++);

	if ( FF_CURRENT_BUFFER_LVALUE->ff_buffer_status == FF_BUFFER_EOF_PENDING )
		/* don't do the read, it's not guaranteed to return an EOF,
		 * just force an EOF
		 */
		FF_CURRENT_BUFFER_LVALUE->ff_n_chars = (ff_n_chars) = 0;

	else
		{
			int num_to_read =
			FF_CURRENT_BUFFER_LVALUE->ff_buf_size - number_to_move - 1;

		while ( num_to_read <= 0 )
			{ /* Not enough room in the buffer - grow it. */

			/* just a shorter name for the current buffer */
			FF_BUFFER_STATE b = FF_CURRENT_BUFFER;

			int ff_c_buf_p_offset =
				(int) ((ff_c_buf_p) - b->ff_ch_buf);

			if ( b->ff_is_our_buffer )
				{
				int new_size = b->ff_buf_size * 2;

				if ( new_size <= 0 )
					b->ff_buf_size += b->ff_buf_size / 8;
				else
					b->ff_buf_size *= 2;

				b->ff_ch_buf = (char *)
					/* Include room in for 2 EOB chars. */
					ffrealloc((void *) b->ff_ch_buf,b->ff_buf_size + 2  );
				}
			else
				/* Can't grow it, we don't own it. */
				b->ff_ch_buf = 0;

			if ( ! b->ff_ch_buf )
				FF_FATAL_ERROR(
				"fatal error - scanner input buffer overflow" );

			(ff_c_buf_p) = &b->ff_ch_buf[ff_c_buf_p_offset];

			num_to_read = FF_CURRENT_BUFFER_LVALUE->ff_buf_size -
						number_to_move - 1;

			}

		if ( num_to_read > FF_READ_BUF_SIZE )
			num_to_read = FF_READ_BUF_SIZE;

		/* Read in more data. */
		FF_INPUT( (&FF_CURRENT_BUFFER_LVALUE->ff_ch_buf[number_to_move]),
			(ff_n_chars), (size_t) num_to_read );

		FF_CURRENT_BUFFER_LVALUE->ff_n_chars = (ff_n_chars);
		}

	if ( (ff_n_chars) == 0 )
		{
		if ( number_to_move == FF_MORE_ADJ )
			{
			ret_val = EOB_ACT_END_OF_FILE;
			ffrestart(ffin  );
			}

		else
			{
			ret_val = EOB_ACT_LAST_MATCH;
			FF_CURRENT_BUFFER_LVALUE->ff_buffer_status =
				FF_BUFFER_EOF_PENDING;
			}
		}

	else
		ret_val = EOB_ACT_CONTINUE_SCAN;

	if ((ff_size_t) ((ff_n_chars) + number_to_move) > FF_CURRENT_BUFFER_LVALUE->ff_buf_size) {
		/* Extend the array by 50%, plus the number we really need. */
		ff_size_t new_size = (ff_n_chars) + number_to_move + ((ff_n_chars) >> 1);
		FF_CURRENT_BUFFER_LVALUE->ff_ch_buf = (char *) ffrealloc((void *) FF_CURRENT_BUFFER_LVALUE->ff_ch_buf,new_size  );
		if ( ! FF_CURRENT_BUFFER_LVALUE->ff_ch_buf )
			FF_FATAL_ERROR( "out of dynamic memory in ff_get_next_buffer()" );
	}

	(ff_n_chars) += number_to_move;
	FF_CURRENT_BUFFER_LVALUE->ff_ch_buf[(ff_n_chars)] = FF_END_OF_BUFFER_CHAR;
	FF_CURRENT_BUFFER_LVALUE->ff_ch_buf[(ff_n_chars) + 1] = FF_END_OF_BUFFER_CHAR;

	(fftext_ptr) = &FF_CURRENT_BUFFER_LVALUE->ff_ch_buf[0];

	return ret_val;
}

/* ff_get_previous_state - get the state just before the EOB char was reached */

    static ff_state_type ff_get_previous_state (void)
{
	register ff_state_type ff_current_state;
	register char *ff_cp;
    
	ff_current_state = (ff_start);

	for ( ff_cp = (fftext_ptr) + FF_MORE_ADJ; ff_cp < (ff_c_buf_p); ++ff_cp )
		{
		register FF_CHAR ff_c = (*ff_cp ? ff_ec[FF_SC_TO_UI(*ff_cp)] : 1);
		if ( ff_accept[ff_current_state] )
			{
			(ff_last_accepting_state) = ff_current_state;
			(ff_last_accepting_cpos) = ff_cp;
			}
		while ( ff_chk[ff_base[ff_current_state] + ff_c] != ff_current_state )
			{
			ff_current_state = (int) ff_def[ff_current_state];
			if ( ff_current_state >= 160 )
				ff_c = ff_meta[(unsigned int) ff_c];
			}
		ff_current_state = ff_nxt[ff_base[ff_current_state] + (unsigned int) ff_c];
		}

	return ff_current_state;
}

/* ff_try_NUL_trans - try to make a transition on the NUL character
 *
 * synopsis
 *	next_state = ff_try_NUL_trans( current_state );
 */
    static ff_state_type ff_try_NUL_trans  (ff_state_type ff_current_state )
{
	register int ff_is_jam;
    	register char *ff_cp = (ff_c_buf_p);

	register FF_CHAR ff_c = 1;
	if ( ff_accept[ff_current_state] )
		{
		(ff_last_accepting_state) = ff_current_state;
		(ff_last_accepting_cpos) = ff_cp;
		}
	while ( ff_chk[ff_base[ff_current_state] + ff_c] != ff_current_state )
		{
		ff_current_state = (int) ff_def[ff_current_state];
		if ( ff_current_state >= 160 )
			ff_c = ff_meta[(unsigned int) ff_c];
		}
	ff_current_state = ff_nxt[ff_base[ff_current_state] + (unsigned int) ff_c];
	ff_is_jam = (ff_current_state == 159);

	return ff_is_jam ? 0 : ff_current_state;
}

    static void ffunput (int c, register char * ff_bp )
{
	register char *ff_cp;
    
    ff_cp = (ff_c_buf_p);

	/* undo effects of setting up fftext */
	*ff_cp = (ff_hold_char);

	if ( ff_cp < FF_CURRENT_BUFFER_LVALUE->ff_ch_buf + 2 )
		{ /* need to shift things up to make room */
		/* +2 for EOB chars. */
		register int number_to_move = (ff_n_chars) + 2;
		register char *dest = &FF_CURRENT_BUFFER_LVALUE->ff_ch_buf[
					FF_CURRENT_BUFFER_LVALUE->ff_buf_size + 2];
		register char *source =
				&FF_CURRENT_BUFFER_LVALUE->ff_ch_buf[number_to_move];

		while ( source > FF_CURRENT_BUFFER_LVALUE->ff_ch_buf )
			*--dest = *--source;

		ff_cp += (int) (dest - source);
		ff_bp += (int) (dest - source);
		FF_CURRENT_BUFFER_LVALUE->ff_n_chars =
			(ff_n_chars) = FF_CURRENT_BUFFER_LVALUE->ff_buf_size;

		if ( ff_cp < FF_CURRENT_BUFFER_LVALUE->ff_ch_buf + 2 )
			FF_FATAL_ERROR( "flex scanner push-back overflow" );
		}

	*--ff_cp = (char) c;

	(fftext_ptr) = ff_bp;
	(ff_hold_char) = *ff_cp;
	(ff_c_buf_p) = ff_cp;
}

#ifndef FF_NO_INPUT
#ifdef __cplusplus
    static int ffinput (void)
#else
    static int input  (void)
#endif

{
	int c;
    
	*(ff_c_buf_p) = (ff_hold_char);

	if ( *(ff_c_buf_p) == FF_END_OF_BUFFER_CHAR )
		{
		/* ff_c_buf_p now points to the character we want to return.
		 * If this occurs *before* the EOB characters, then it's a
		 * valid NUL; if not, then we've hit the end of the buffer.
		 */
		if ( (ff_c_buf_p) < &FF_CURRENT_BUFFER_LVALUE->ff_ch_buf[(ff_n_chars)] )
			/* This was really a NUL. */
			*(ff_c_buf_p) = '\0';

		else
			{ /* need more input */
			int offset = (ff_c_buf_p) - (fftext_ptr);
			++(ff_c_buf_p);

			switch ( ff_get_next_buffer(  ) )
				{
				case EOB_ACT_LAST_MATCH:
					/* This happens because ff_g_n_b()
					 * sees that we've accumulated a
					 * token and flags that we need to
					 * try matching the token before
					 * proceeding.  But for input(),
					 * there's no matching to consider.
					 * So convert the EOB_ACT_LAST_MATCH
					 * to EOB_ACT_END_OF_FILE.
					 */

					/* Reset buffer status. */
					ffrestart(ffin );

					/*FALLTHROUGH*/

				case EOB_ACT_END_OF_FILE:
					{
					if ( ffwrap( ) )
						return EOF;

					if ( ! (ff_did_buffer_switch_on_eof) )
						FF_NEW_FILE;
#ifdef __cplusplus
					return ffinput();
#else
					return input();
#endif
					}

				case EOB_ACT_CONTINUE_SCAN:
					(ff_c_buf_p) = (fftext_ptr) + offset;
					break;
				}
			}
		}

	c = *(unsigned char *) (ff_c_buf_p);	/* cast for 8-bit char's */
	*(ff_c_buf_p) = '\0';	/* preserve fftext */
	(ff_hold_char) = *++(ff_c_buf_p);

	return c;
}
#endif	/* ifndef FF_NO_INPUT */

/** Immediately switch to a different input stream.
 * @param input_file A readable stream.
 * 
 * @note This function does not reset the start condition to @c INITIAL .
 */
    void ffrestart  (FILE * input_file )
{
    
	if ( ! FF_CURRENT_BUFFER ){
        ffensure_buffer_stack ();
		FF_CURRENT_BUFFER_LVALUE =
            ff_create_buffer(ffin,FF_BUF_SIZE );
	}

	ff_init_buffer(FF_CURRENT_BUFFER,input_file );
	ff_load_buffer_state( );
}

/** Switch to a different input buffer.
 * @param new_buffer The new input buffer.
 * 
 */
    void ff_switch_to_buffer  (FF_BUFFER_STATE  new_buffer )
{
    
	/* TODO. We should be able to replace this entire function body
	 * with
	 *		ffpop_buffer_state();
	 *		ffpush_buffer_state(new_buffer);
     */
	ffensure_buffer_stack ();
	if ( FF_CURRENT_BUFFER == new_buffer )
		return;

	if ( FF_CURRENT_BUFFER )
		{
		/* Flush out information for old buffer. */
		*(ff_c_buf_p) = (ff_hold_char);
		FF_CURRENT_BUFFER_LVALUE->ff_buf_pos = (ff_c_buf_p);
		FF_CURRENT_BUFFER_LVALUE->ff_n_chars = (ff_n_chars);
		}

	FF_CURRENT_BUFFER_LVALUE = new_buffer;
	ff_load_buffer_state( );

	/* We don't actually know whether we did this switch during
	 * EOF (ffwrap()) processing, but the only time this flag
	 * is looked at is after ffwrap() is called, so it's safe
	 * to go ahead and always set it.
	 */
	(ff_did_buffer_switch_on_eof) = 1;
}

static void ff_load_buffer_state  (void)
{
    	(ff_n_chars) = FF_CURRENT_BUFFER_LVALUE->ff_n_chars;
	(fftext_ptr) = (ff_c_buf_p) = FF_CURRENT_BUFFER_LVALUE->ff_buf_pos;
	ffin = FF_CURRENT_BUFFER_LVALUE->ff_input_file;
	(ff_hold_char) = *(ff_c_buf_p);
}

/** Allocate and initialize an input buffer state.
 * @param file A readable stream.
 * @param size The character buffer size in bytes. When in doubt, use @c FF_BUF_SIZE.
 * 
 * @return the allocated buffer state.
 */
    FF_BUFFER_STATE ff_create_buffer  (FILE * file, int  size )
{
	FF_BUFFER_STATE b;
    
	b = (FF_BUFFER_STATE) ffalloc(sizeof( struct ff_buffer_state )  );
	if ( ! b )
		FF_FATAL_ERROR( "out of dynamic memory in ff_create_buffer()" );

	b->ff_buf_size = size;

	/* ff_ch_buf has to be 2 characters longer than the size given because
	 * we need to put in 2 end-of-buffer characters.
	 */
	b->ff_ch_buf = (char *) ffalloc(b->ff_buf_size + 2  );
	if ( ! b->ff_ch_buf )
		FF_FATAL_ERROR( "out of dynamic memory in ff_create_buffer()" );

	b->ff_is_our_buffer = 1;

	ff_init_buffer(b,file );

	return b;
}

/** Destroy the buffer.
 * @param b a buffer created with ff_create_buffer()
 * 
 */
    void ff_delete_buffer (FF_BUFFER_STATE  b )
{
    
	if ( ! b )
		return;

	if ( b == FF_CURRENT_BUFFER ) /* Not sure if we should pop here. */
		FF_CURRENT_BUFFER_LVALUE = (FF_BUFFER_STATE) 0;

	if ( b->ff_is_our_buffer )
		yyfffree((void *) b->ff_ch_buf  );

	yyfffree((void *) b  );
}

#ifndef __cplusplus
extern int isatty (int );
#endif /* __cplusplus */
    
/* Initializes or reinitializes a buffer.
 * This function is sometimes called more than once on the same buffer,
 * such as during a ffrestart() or at EOF.
 */
    static void ff_init_buffer  (FF_BUFFER_STATE  b, FILE * file )

{
	int oerrno = errno;
    
	ff_flush_buffer(b );

	b->ff_input_file = file;
	b->ff_fill_buffer = 1;

    /* If b is the current buffer, then ff_init_buffer was _probably_
     * called from ffrestart() or through ff_get_next_buffer.
     * In that case, we don't want to reset the lineno or column.
     */
    if (b != FF_CURRENT_BUFFER){
        b->ff_bs_lineno = 1;
        b->ff_bs_column = 0;
    }

        b->ff_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
    
	errno = oerrno;
}

/** Discard all buffered characters. On the next scan, FF_INPUT will be called.
 * @param b the buffer state to be flushed, usually @c FF_CURRENT_BUFFER.
 * 
 */
    void ff_flush_buffer (FF_BUFFER_STATE  b )
{
    	if ( ! b )
		return;

	b->ff_n_chars = 0;

	/* We always need two end-of-buffer characters.  The first causes
	 * a transition to the end-of-buffer state.  The second causes
	 * a jam in that state.
	 */
	b->ff_ch_buf[0] = FF_END_OF_BUFFER_CHAR;
	b->ff_ch_buf[1] = FF_END_OF_BUFFER_CHAR;

	b->ff_buf_pos = &b->ff_ch_buf[0];

	b->ff_at_bol = 1;
	b->ff_buffer_status = FF_BUFFER_NEW;

	if ( b == FF_CURRENT_BUFFER )
		ff_load_buffer_state( );
}

/** Pushes the new state onto the stack. The new state becomes
 *  the current state. This function will allocate the stack
 *  if necessary.
 *  @param new_buffer The new state.
 *  
 */
void ffpush_buffer_state (FF_BUFFER_STATE new_buffer )
{
    	if (new_buffer == NULL)
		return;

	ffensure_buffer_stack();

	/* This block is copied from ff_switch_to_buffer. */
	if ( FF_CURRENT_BUFFER )
		{
		/* Flush out information for old buffer. */
		*(ff_c_buf_p) = (ff_hold_char);
		FF_CURRENT_BUFFER_LVALUE->ff_buf_pos = (ff_c_buf_p);
		FF_CURRENT_BUFFER_LVALUE->ff_n_chars = (ff_n_chars);
		}

	/* Only push if top exists. Otherwise, replace top. */
	if (FF_CURRENT_BUFFER)
		(ff_buffer_stack_top)++;
	FF_CURRENT_BUFFER_LVALUE = new_buffer;

	/* copied from ff_switch_to_buffer. */
	ff_load_buffer_state( );
	(ff_did_buffer_switch_on_eof) = 1;
}

/** Removes and deletes the top of the stack, if present.
 *  The next element becomes the new top.
 *  
 */
void ffpop_buffer_state (void)
{
    	if (!FF_CURRENT_BUFFER)
		return;

	ff_delete_buffer(FF_CURRENT_BUFFER );
	FF_CURRENT_BUFFER_LVALUE = NULL;
	if ((ff_buffer_stack_top) > 0)
		--(ff_buffer_stack_top);

	if (FF_CURRENT_BUFFER) {
		ff_load_buffer_state( );
		(ff_did_buffer_switch_on_eof) = 1;
	}
}

/* Allocates the stack if it does not exist.
 *  Guarantees space for at least one push.
 */
static void ffensure_buffer_stack (void)
{
	int num_to_alloc;
    
	if (!(ff_buffer_stack)) {

		/* First allocation is just for 2 elements, since we don't know if this
		 * scanner will even need a stack. We use 2 instead of 1 to avoid an
		 * immediate realloc on the next call.
         */
		num_to_alloc = 1;
		(ff_buffer_stack) = (struct ff_buffer_state**)ffalloc
								(num_to_alloc * sizeof(struct ff_buffer_state*)
								);
		if ( ! (ff_buffer_stack) )
			FF_FATAL_ERROR( "out of dynamic memory in ffensure_buffer_stack()" );
								  
		memset((ff_buffer_stack), 0, num_to_alloc * sizeof(struct ff_buffer_state*));
				
		(ff_buffer_stack_max) = num_to_alloc;
		(ff_buffer_stack_top) = 0;
		return;
	}

	if ((ff_buffer_stack_top) >= ((ff_buffer_stack_max)) - 1){

		/* Increase the buffer to prepare for a possible push. */
		int grow_size = 8 /* arbitrary grow size */;

		num_to_alloc = (ff_buffer_stack_max) + grow_size;
		(ff_buffer_stack) = (struct ff_buffer_state**)ffrealloc
								((ff_buffer_stack),
								num_to_alloc * sizeof(struct ff_buffer_state*)
								);
		if ( ! (ff_buffer_stack) )
			FF_FATAL_ERROR( "out of dynamic memory in ffensure_buffer_stack()" );

		/* zero only the new slots.*/
		memset((ff_buffer_stack) + (ff_buffer_stack_max), 0, grow_size * sizeof(struct ff_buffer_state*));
		(ff_buffer_stack_max) = num_to_alloc;
	}
}

/** Setup the input buffer state to scan directly from a user-specified character buffer.
 * @param base the character buffer
 * @param size the size in bytes of the character buffer
 * 
 * @return the newly allocated buffer state object. 
 */
FF_BUFFER_STATE ff_scan_buffer  (char * base, ff_size_t  size )
{
	FF_BUFFER_STATE b;
    
	if ( size < 2 ||
	     base[size-2] != FF_END_OF_BUFFER_CHAR ||
	     base[size-1] != FF_END_OF_BUFFER_CHAR )
		/* They forgot to leave room for the EOB's. */
		return 0;

	b = (FF_BUFFER_STATE) ffalloc(sizeof( struct ff_buffer_state )  );
	if ( ! b )
		FF_FATAL_ERROR( "out of dynamic memory in ff_scan_buffer()" );

	b->ff_buf_size = size - 2;	/* "- 2" to take care of EOB's */
	b->ff_buf_pos = b->ff_ch_buf = base;
	b->ff_is_our_buffer = 0;
	b->ff_input_file = 0;
	b->ff_n_chars = b->ff_buf_size;
	b->ff_is_interactive = 0;
	b->ff_at_bol = 1;
	b->ff_fill_buffer = 0;
	b->ff_buffer_status = FF_BUFFER_NEW;

	ff_switch_to_buffer(b  );

	return b;
}

/** Setup the input buffer state to scan a string. The next call to fflex() will
 * scan from a @e copy of @a str.
 * @param ffstr a NUL-terminated string to scan
 * 
 * @return the newly allocated buffer state object.
 * @note If you want to scan bytes that may contain NUL values, then use
 *       ff_scan_bytes() instead.
 */
FF_BUFFER_STATE ff_scan_string (ffconst char * ffstr )
{
    
	return ff_scan_bytes(ffstr,strlen(ffstr) );
}

/** Setup the input buffer state to scan the given bytes. The next call to fflex() will
 * scan from a @e copy of @a bytes.
 * @param bytes the byte buffer to scan
 * @param len the number of bytes in the buffer pointed to by @a bytes.
 * 
 * @return the newly allocated buffer state object.
 */
FF_BUFFER_STATE ff_scan_bytes  (ffconst char * ffbytes, int  _ffbytes_len )
{
	FF_BUFFER_STATE b;
	char *buf;
	ff_size_t n;
	int i;
    
	/* Get memory for full buffer, including space for trailing EOB's. */
	n = _ffbytes_len + 2;
	buf = (char *) ffalloc(n  );
	if ( ! buf )
		FF_FATAL_ERROR( "out of dynamic memory in ff_scan_bytes()" );

	for ( i = 0; i < _ffbytes_len; ++i )
		buf[i] = ffbytes[i];

	buf[_ffbytes_len] = buf[_ffbytes_len+1] = FF_END_OF_BUFFER_CHAR;

	b = ff_scan_buffer(buf,n );
	if ( ! b )
		FF_FATAL_ERROR( "bad buffer in ff_scan_bytes()" );

	/* It's okay to grow etc. this buffer, and we should throw it
	 * away when we're done.
	 */
	b->ff_is_our_buffer = 1;

	return b;
}

#ifndef FF_EXIT_FAILURE
#define FF_EXIT_FAILURE 2
#endif

static void ff_fatal_error (ffconst char* msg )
{
    	(void) fprintf( stderr, "%s\n", msg );
	exit( FF_EXIT_FAILURE );
}

/* Redefine ffless() so it works in section 3 code. */

#undef ffless
#define ffless(n) \
	do \
		{ \
		/* Undo effects of setting up fftext. */ \
        int ffless_macro_arg = (n); \
        FF_LESS_LINENO(ffless_macro_arg);\
		fftext[ffleng] = (ff_hold_char); \
		(ff_c_buf_p) = fftext + ffless_macro_arg; \
		(ff_hold_char) = *(ff_c_buf_p); \
		*(ff_c_buf_p) = '\0'; \
		ffleng = ffless_macro_arg; \
		} \
	while ( 0 )

/* Accessor  methods (get/set functions) to struct members. */

/** Get the current line number.
 * 
 */
int ffget_lineno  (void)
{
        
    return fflineno;
}

/** Get the input stream.
 * 
 */
FILE *ffget_in  (void)
{
        return ffin;
}

/** Get the output stream.
 * 
 */
FILE *ffget_out  (void)
{
        return ffout;
}

/** Get the length of the current token.
 * 
 */
int ffget_leng  (void)
{
        return ffleng;
}

/** Get the current token.
 * 
 */

char *ffget_text  (void)
{
        return fftext;
}

/** Set the current line number.
 * @param line_number
 * 
 */
void ffset_lineno (int  line_number )
{
    
    fflineno = line_number;
}

/** Set the input stream. This does not discard the current
 * input buffer.
 * @param in_str A readable stream.
 * 
 * @see ff_switch_to_buffer
 */
void ffset_in (FILE *  in_str )
{
        ffin = in_str ;
}

void ffset_out (FILE *  out_str )
{
        ffout = out_str ;
}

int ffget_debug  (void)
{
        return ff_flex_debug;
}

void ffset_debug (int  bdebug )
{
        ff_flex_debug = bdebug ;
}

static int ff_init_globals (void)
{
        /* Initialization is the same as for the non-reentrant scanner.
     * This function is called from fflex_destroy(), so don't allocate here.
     */

    (ff_buffer_stack) = 0;
    (ff_buffer_stack_top) = 0;
    (ff_buffer_stack_max) = 0;
    (ff_c_buf_p) = (char *) 0;
    (ff_init) = 0;
    (ff_start) = 0;

/* Defined in main.c */
#ifdef FF_STDINIT
    ffin = stdin;
    ffout = stdout;
#else
    ffin = (FILE *) 0;
    ffout = (FILE *) 0;
#endif

    /* For future reference: Set errno on error, since we are called by
     * fflex_init()
     */
    return 0;
}

/* fflex_destroy is for both reentrant and non-reentrant scanners. */
int fflex_destroy  (void)
{
    
    /* Pop the buffer stack, destroying each element. */
	while(FF_CURRENT_BUFFER){
		ff_delete_buffer(FF_CURRENT_BUFFER  );
		FF_CURRENT_BUFFER_LVALUE = NULL;
		ffpop_buffer_state();
	}

	/* Destroy the stack itself. */
	yyfffree((ff_buffer_stack) );
	(ff_buffer_stack) = NULL;

    /* Reset the globals. This is important in a non-reentrant scanner so the next time
     * fflex() is called, initialization will occur. */
    ff_init_globals( );

    return 0;
}

/*
 * Internal utility routines.
 */

#ifndef fftext_ptr
static void ff_flex_strncpy (char* s1, ffconst char * s2, int n )
{
	register int i;
	for ( i = 0; i < n; ++i )
		s1[i] = s2[i];
}
#endif

#ifdef FF_NEED_STRLEN
static int ff_flex_strlen (ffconst char * s )
{
	register int n;
	for ( n = 0; s[n]; ++n )
		;

	return n;
}
#endif

void *ffalloc (ff_size_t  size )
{
	return (void *) malloc( size );
}

void *ffrealloc  (void * ptr, ff_size_t  size )
{
	/* The cast to (char *) in the following accommodates both
	 * implementations that use char* generic pointers, and those
	 * that use void* generic pointers.  It works with the latter
	 * because both ANSI C and C++ allow castless assignment from
	 * any pointer type to void*, and deal with argument conversions
	 * as though doing an assignment.
	 */
	return (void *) realloc( (char *) ptr, size );
}

void yyfffree (void * ptr )
{
	free( (char *) ptr );	/* see ffrealloc() for (char *) cast */
}

#define FFTABLES_NAME "fftables"

#line 419 "eval.l"



int ffwrap()
{
  /* MJT -- 13 June 1996
     Supplied for compatibility with
     pre-2.5.1 versions of flex which
     do not recognize %option noffwrap 
  */
  return(1);
}

/* 
   expr_read is lifted from old ftools.skel. 
   Now we can use any version of flex with
   no .skel file necessary! MJT - 13 June 1996

   keep a memory of how many bytes have been
   read previously, so that an unlimited-sized
   buffer can be supported. PDW - 28 Feb 1998
*/

static int expr_read(char *buf, int nbytes)
{
 int n;
 
 n = 0;
 if( !gParse.is_eobuf ) {
     do {
        buf[n++] = gParse.expr[gParse.index++];
       } while ((n<nbytes)&&(gParse.expr[gParse.index] != '\0'));
     if( gParse.expr[gParse.index] == '\0' ) gParse.is_eobuf = 1;
 }
 buf[n] = '\0';
 return(n);
}

int ffGetVariable( char *varName, FFSTYPE *thelval )
{
   int varNum, type;
   char errMsg[MAXVARNAME+25];

   varNum = find_variable( varName );
   if( varNum<0 ) {
      if( gParse.getData ) {
	 type = (*gParse.getData)( varName, thelval );
      } else {
	 type = pERROR;
	 gParse.status = PARSE_SYNTAX_ERR;
	 strcpy (errMsg,"Unable to find data: ");
	 strncat(errMsg, varName, MAXVARNAME);
	 ffpmsg (errMsg);
      }
   } else {
      /*  Convert variable type into expression type  */
      switch( gParse.varData[ varNum ].type ) {
      case LONG:
      case DOUBLE:   type =  COLUMN;  break;
      case BOOLEAN:  type = BCOLUMN;  break;
      case STRING:   type = SCOLUMN;  break;
      case BITSTR:   type =  BITCOL;  break;
      default:
	 type = pERROR;
	 gParse.status = PARSE_SYNTAX_ERR;
	 strcpy (errMsg,"Bad datatype for data: ");
	 strncat(errMsg, varName, MAXVARNAME);
	 ffpmsg (errMsg);
	 break;
      }
      thelval->lng = varNum;
   }
   return( type );
}

static int find_variable(char *varName)
{
   int i;
 
   if( gParse.nCols )
      for( i=0; i<gParse.nCols; i++ ) {
         if( ! fits_strncasecmp(gParse.varData[i].name,varName,MAXVARNAME) ) {
            return( i );
         }
      }
   return( -1 );
}