scan.cc

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// Added by flex++.
#pragma GCC diagnostic ignored "-Wsign-compare"
// Check Clang first, as it defines __GNUC__.
#if defined __clang__
# pragma clang diagnostic ignored "-Wdeprecated"
# pragma clang diagnostic ignored "-Wnull-conversion"
# if 5 <= __clang_major__
#  pragma clang diagnostic ignored "-Wzero-as-null-pointer-constant"
# endif
#elif defined __GNUC__
# pragma GCC diagnostic ignored "-Wsuggest-attribute=const"
# pragma GCC diagnostic ignored "-Wsuggest-attribute=noreturn"
# pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
# pragma GCC diagnostic ignored "-Wzero-as-null-pointer-constant"
#endif

#line 1 "lib/vcsn/rat/scan.cc"
// Define YY_DECL.
#include <lib/vcsn/rat/parse.hh>

#define yyterminate() return parser::make_END(loc)

#line 7 "lib/vcsn/rat/scan.cc"

#define  YY_INT_ALIGNED short int

/* A lexical scanner generated by flex */

/* %not-for-header */
/* %if-c-only */
/* %if-not-reentrant */
/* %endif */
/* %endif */
/* %ok-for-header */

#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

/* %if-c++-only */
    /* The c++ scanner is a mess. The FlexLexer.h header file relies on the
     * following macro. This is required in order to pass the c++-multiple-scanners
     * test in the regression suite. We get reports that it breaks inheritance.
     * We will address this in a future release of flex, or omit the C++ scanner
     * altogether.
     */
    #define yyFlexLexer yyFlexLexer
/* %endif */

/* %if-c-only */
/* %endif */

/* %if-c-only */
/* %endif */

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

/* begin standard C headers. */
/* %if-c-only */
/* %endif */

/* %if-tables-serialization */
/* %endif */
/* end standard C headers. */

/* %if-c-or-c++ */
/* 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 */

/* %endif */

/* begin standard C++ headers. */
/* %if-c++-only */
#include <iostream>
#include <errno.h>
#include <cstdlib>
#include <cstdio>
#include <cstring>
/* end standard C++ headers. */
/* %endif */

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

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

/* %not-for-header */
/* Returned upon end-of-file. */
#define YY_NULL 0
/* %ok-for-header */

/* %not-for-header */
/* 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))
/* %ok-for-header */

/* %if-reentrant */
/* %endif */

/* %if-not-reentrant */

/* %endif */

/* 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

/* %if-not-reentrant */
extern int yyleng;
/* %endif */

/* %if-c-only */
/* %if-not-reentrant */
/* %endif */
/* %endif */

#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
        {
/* %if-c-only */
/* %endif */

/* %if-c++-only */
        std::streambuf* yy_input_file;
/* %endif */

        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; 
    int yy_bs_column; 
        /* 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 */

/* %if-c-only Standard (non-C++) definition */
/* %not-for-header */
/* %if-not-reentrant */
/* %endif */
/* %ok-for-header */

/* %endif */

/* 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)]

/* %if-c-only Standard (non-C++) definition */
/* %if-not-reentrant */
/* %not-for-header */
/* %ok-for-header */

/* %endif */
/* %endif */

// 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)

/* %% [1.0] yytext/yyin/yyout/yy_state_type/yylineno etc. def's & init go here */
/* Begin user sect3 */

#define FLEX_DEBUG
typedef flex_uint8_t YY_CHAR;

#define yytext_ptr yytext
#define YY_INTERACTIVE

#include <lib/vcsn/rat/scan.hh>

/* %% [1.5] DFA */

/* %if-c-only Standard (non-C++) definition */
/* %endif */

/* 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; \
/* %% [2.0] code to fiddle yytext and yyleng for yymore() goes here \ */\
        yyleng = (int) (yy_cp - yy_bp); \
        (yy_hold_char) = *yy_cp; \
        *yy_cp = '\0'; \
/* %% [3.0] code to copy yytext_ptr to yytext[] goes here, if %array \ */\
        (yy_c_buf_p) = yy_cp;
/* %% [4.0] data tables for the DFA and the user's section 1 definitions go here */
#define YY_NUM_RULES 61
#define YY_END_OF_BUFFER 62
/* 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[131] =
    {   0,
        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
       62,   42,   32,   33,   23,    7,    4,   42,    1,    2,
       19,    8,   13,   10,    5,   30,   34,   18,   15,   31,
       42,    3,   34,   14,   42,   42,   42,   42,   61,   37,
       42,   35,   36,   45,   46,   43,   44,   57,   57,   57,
       60,   58,   59,   60,   32,   33,    6,    0,    0,    0,
        9,   41,   41,   17,   41,   16,    0,    0,    0,    0,
        0,    0,    0,    0,    0,    0,   21,   23,   22,   17,
        0,    0,    0,    0,    0,   45,   46,   49,   50,   48,
        0,   60,    0,   38,    0,   38,    0,    0,    0,   27,

        0,    0,   19,   20,    0,   12,   18,   25,   11,   24,
       26,   16,   30,   34,   47,   51,   52,   53,   54,   55,
       56,   58,   59,    0,   29,    0,   39,   40,   28,    0
    } ;

static const YY_CHAR yy_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,    1,    5,    1,    6,    7,    8,    9,
       10,   11,   12,   13,   14,   15,   16,   17,   17,   17,
       17,   17,   17,   17,   17,   18,   18,   19,    1,   20,
        1,   21,   22,   23,   24,   24,   24,   24,   24,   24,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,   25,    1,    1,    1,    1,    1,    1,
       26,   27,   28,   29,    1,    1,   24,   24,   30,   24,

       31,   24,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,   32,    1,    1,    1,   33,
        1,   34,   35,   36,   37,    1,    1,    1,   38,    1,
        1,    1,   39,    1,    1,   40,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
       41,    1,    1,    1,    1,   42,    1,    1,   43,    1,
        1,    1,    1,    1,    1,    1,    1,   44,   45,    1,
        1,   46,    1,    1,    1,   47,    1,   48,   49,   50,
       51,   52,   53,   54,   55,    1,    1,    1,    1,    1,
        1,    1,    1,   56,    1,    1,    1,    1,    1,    1,

        1,    1,    1,    1,    1,   57,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,   58,   59,    1,    1,    1,    1,
        1,    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[60] =
    {   0,
        1,    1,    2,    1,    1,    1,    1,    3,    4,    4,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    5,
        5,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    6
    } ;

static const flex_int16_t yy_base[141] =
    {   0,
        0,    0,   58,    0,   73,   87,    7,   32,   54,   78,
      270,  271,  267,  264,  271,  271,  225,  215,  214,  271,
      271,  271,  271,  271,  271,  219,  271,  271,  271,  271,
       72,  271,  127,  271,   63,  157,   49,   64,  271,  271,
       75,  271,  271,    0,  204,  271,  271,  271,   71,  168,
        0,  271,  271,  162,  202,  200,  271,  102,  119,  127,
      271,  271,  185,  271,  138,  271,  162,  161,  116,  160,
      148,  159,  158,  156,  155,  141,  271,  271,  271,  271,
      122,  109,  120,   82,   80,    0,  145,  271,  271,  271,
      129,    0,   86,  271,  133,  150,  183,  132,    0,  271,

      119,  170,  271,  271,  172,  271,  271,  271,  271,  271,
      271,  271,  271,  271,  271,  271,  271,  271,  271,  271,
      271,  271,  271,  125,  271,  107,  271,  271,  271,  271,
      210,  216,  222,  228,  234,  240,  246,  250,  256,  262
    } ;

static const flex_int16_t yy_def[141] =
    {   0,
      130,    1,    1,    3,  131,  131,  132,  132,  133,  133,
      130,  130,  130,  130,  130,  130,  130,  134,  130,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      135,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      135,  130,  130,  136,  130,  130,  130,  130,  130,  130,
      137,  130,  130,  130,  130,  130,  130,  134,  138,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  130,  130,  136,  130,  130,  130,  130,
      130,  137,  130,  130,  134,  134,  138,  139,  140,  130,

      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  139,  130,  140,  130,  130,  130,    0,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130
    } ;

static const flex_int16_t yy_nxt[331] =
    {   0,
       12,   13,   14,   15,   12,   16,   17,   18,   19,   20,
       21,   22,   23,   12,   24,   12,   12,   12,   25,   26,
       27,   28,   29,   12,   12,   30,   31,   32,   12,   12,
       12,   12,   12,   12,   33,   34,   27,   12,   12,   12,
       12,   12,   12,   12,   12,   12,   12,   12,   12,   12,
       12,   12,   12,   12,   12,   35,   36,   37,   38,   12,
       39,   12,   49,   12,   12,   50,   12,   12,   12,   12,
       12,   40,   12,   52,   53,   45,   12,   12,   12,   12,
       12,   46,   47,   12,   41,   42,   43,   49,   63,   45,
       50,   63,   12,   12,   12,   46,   47,   52,   53,   81,

       82,   83,   64,   84,   65,   66,   85,   65,   78,   94,
       79,   79,   54,   12,   12,   12,   12,   79,   88,   89,
      112,   58,  103,  113,  114,   90,   96,  129,   59,  122,
      123,   98,  105,  105,  125,  127,   54,   67,   68,   69,
       94,  125,   70,   71,   71,   97,   99,   87,   72,  100,
      110,   73,   77,   74,  102,  102,   75,   94,   76,   59,
       69,  102,  108,   77,   71,   71,   79,  102,  102,   79,
       79,   79,   79,   79,   79,  115,   59,  111,  116,  117,
      118,  119,  120,  121,   77,   58,  128,  128,  105,  105,
       96,  110,  109,  128,  108,  107,  106,  104,  103,  128,

      128,  101,   56,   55,   93,   91,   87,   80,   77,   97,
       44,   44,   44,   44,   44,   44,   48,   48,   48,   48,
       48,   48,   51,   51,   51,   51,   51,   51,   58,   58,
       61,   58,   58,   58,   62,   60,   62,   62,   62,   62,
       86,   59,   86,   57,   86,   86,   92,   92,   92,   92,
       95,   95,   95,   95,   95,   95,  124,  124,  124,  124,
      124,  124,  126,  126,  126,  126,   56,  126,   55,  130,
       11,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,

      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130
    } ;

static const flex_int16_t yy_chk[331] =
    {   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,    1,    1,    3,
        3,    3,    7,    3,    3,    7,    3,    3,    3,    3,
        3,    3,    3,    9,    9,    5,    3,    3,    3,    3,
        3,    5,    5,    3,    3,    3,    3,    8,   31,    6,
        8,   41,    3,    3,    3,    6,    6,   10,   10,   37,

       37,   38,   31,   38,   31,   31,   38,   41,   35,   58,
       35,   35,    9,    3,    3,    3,    3,   35,   49,   49,
       84,   59,   84,   85,   85,   49,   59,  126,   58,   93,
       93,   60,   69,   69,  124,  101,   10,   33,   33,   33,
       95,   98,   33,   33,   33,   59,   60,   87,   33,   60,
       82,   33,   69,   33,   65,   65,   33,   96,   33,   95,
       71,   65,   81,   33,   71,   71,   83,   65,   65,   83,
       83,   83,   83,   83,   83,   91,   96,   76,   91,   91,
       91,   91,   91,   91,   71,   97,  102,  102,  105,  105,
       97,   75,   74,  102,   73,   72,   70,   68,   67,  102,

      102,   63,   56,   55,   54,   50,   45,   36,  105,   97,
      131,  131,  131,  131,  131,  131,  132,  132,  132,  132,
      132,  132,  133,  133,  133,  133,  133,  133,  134,  134,
       26,  134,  134,  134,  135,   19,  135,  135,  135,  135,
      136,   18,  136,   17,  136,  136,  137,  137,  137,  137,
      138,  138,  138,  138,  138,  138,  139,  139,  139,  139,
      139,  139,  140,  140,  140,  140,   14,  140,   13,   11,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,

      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130,
      130,  130,  130,  130,  130,  130,  130,  130,  130,  130
    } ;

static const flex_int16_t yy_rule_linenum[61] =
    {   0,
       66,   67,   68,   70,   71,   72,   73,   74,   75,   76,
       77,   78,   79,   80,   81,   82,   83,   86,   87,   88,
       89,   94,  103,  104,  105,  106,  109,  110,  114,  117,
      120,  123,  124,  126,  133,  137,  138,  148,  152,  153,
      154,  155,  160,  164,  177,  178,  187,  188,  189,  190,
      191,  192,  193,  194,  195,  196,  197,  211,  216,  230
    } ;

/* 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
#line 1 "lib/vcsn/rat/scan.ll"
#define YY_NO_INPUT 1

#line 14 "lib/vcsn/rat/scan.ll"
#include <cassert>
#include <iostream>
#include <stack>
#include <string>

#include <boost/lexical_cast.hpp>

#include <vcsn/misc/escape.hh>
#include <vcsn/misc/regex.hh>

#include <lib/vcsn/rat/driver.hh>
#include <lib/vcsn/rat/parse.hh>

#define LINE(Line)                              \
  do {                                          \
    loc.end.column = 1;                         \
    loc.lines(Line);                            \
 } while (false)

#define YY_USER_ACTION                          \
  loc.columns(yyleng);

#define TOK(Token)                              \
  parser::make_ ## Token (loc)

YY_FLEX_NAMESPACE_BEGIN
namespace
{
  irange_type quantifier(driver& d, const location& loc, const std::string& s);
}
#line 629 "lib/vcsn/rat/scan.cc"

#line 49 "lib/vcsn/rat/scan.ll"
 /* Abbreviations. */
#line 633 "lib/vcsn/rat/scan.cc"

#define INITIAL 0
#define SC_CLASS 1
#define SC_CONTEXT 2
#define SC_EXPONENT 3
#define SC_WEIGHT 4

#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.
 */
/* %if-c-only */
/* %endif */
/* %if-c++-only */
#include <unistd.h>
/* %endif */
#endif

#ifndef YY_EXTRA_TYPE
#define YY_EXTRA_TYPE void *
#endif

/* %if-c-only Reentrant structure and macros (non-C++). */
/* %if-reentrant */
/* %if-c-only */
/* %endif */
/* %if-reentrant */
/* %endif */
/* %endif End reentrant structures and macros. */
/* %if-bison-bridge */
/* %endif */
/* %not-for-header */
/* %ok-for-header */

/* %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
/* %if-c-only Standard (non-C++) definition */
/* %not-for-header */
/* %ok-for-header */

/* %endif */
#endif

/* %if-c-only */
/* %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
/* %if-c-only Standard (non-C++) definition */
/* %endif */
/* %if-c++-only C++ definition */
#define ECHO LexerOutput( yytext, yyleng )
/* %endif */
#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) \
/* %% [5.0] fread()/read() definition of YY_INPUT goes here unless we're doing C++ \ */\
\
/* %if-c++-only C++ definition \ */\
        if ( (int)(result = LexerInput( (char *) buf, max_size )) < 0 ) \
                YY_FATAL_ERROR( "input in flex scanner failed" );
/* %endif */

#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
/* %if-c-only */
/* %endif */
/* %if-c++-only */
#define YY_FATAL_ERROR(msg) LexerError( msg )
/* %endif */
#endif

/* %if-tables-serialization structures and prototypes */
/* %not-for-header */
/* %ok-for-header */

/* %not-for-header */
/* %tables-yydmap generated elements */
/* %endif */
/* end tables serialization structures and prototypes */

/* %ok-for-header */

/* Default declaration of generated scanner - a define so the user can
 * easily add parameters.
 */
#ifndef YY_DECL
#define YY_DECL_IS_OURS 1
/* %if-c-only Standard (non-C++) definition */
/* %endif */
/* %if-c++-only C++ definition */
#define YY_DECL int yyFlexLexer::yylex()
/* %endif */
#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

/* %% [6.0] YY_RULE_SETUP definition goes here */
#define YY_RULE_SETUP \
        YY_USER_ACTION

/* %not-for-header */
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 )
/* %if-c-only */
/* %endif */
/* %if-c++-only */
                        yyin.rdbuf(std::cin.rdbuf());
/* %endif */

                if ( ! yyout )
/* %if-c-only */
/* %endif */
/* %if-c++-only */
                        yyout.rdbuf(std::cout.rdbuf());
/* %endif */

                if ( ! YY_CURRENT_BUFFER ) {
                        yyensure_buffer_stack ();
                        YY_CURRENT_BUFFER_LVALUE =
                                yy_create_buffer( yyin, YY_BUF_SIZE );
                }

                yy_load_buffer_state(  );
                }

        {
/* %% [7.0] user's declarations go here */
#line 52 "lib/vcsn/rat/scan.ll"


  // Count the number of opened braces in SC_WEIGHT, and parens in SC_CONTEXT.
  unsigned int nesting = 0;
  // Compute the exponent.
  unsigned int exponent = 0;
  // Build a context string.  "static" only to save build/dtor.
  static std::string context;
  std::string s;
  loc.step();


#line 842 "lib/vcsn/rat/scan.cc"

        while ( /*CONSTCOND*/1 )                /* loops until end-of-file is reached */
                {
/* %% [8.0] yymore()-related code goes here */
                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;

/* %% [9.0] code to set up and find next match goes here */
                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 >= 131 )
                                        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] != 271 );

yy_find_action:
/* %% [10.0] code to find the action number goes here */
                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;

/* %% [11.0] code for yylineno update goes here */

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

/* %% [12.0] debug code goes here */
                if ( yy_flex_debug )
                        {
                        if ( yy_act == 0 )
                                std::cerr << "--scanner backing up\n";
                        else if ( yy_act < 61 )
                                std::cerr << "--accepting rule at line " << yy_rule_linenum[yy_act] <<
                                         "(\"" << yytext << "\")\n";
                        else if ( yy_act == 61 )
                                std::cerr << "--accepting default rule (\"" << yytext << "\")\n";
                        else if ( yy_act == 62 )
                                std::cerr << "--(end of buffer or a NUL)\n";
                        else
                                std::cerr << "--EOF (start condition " << YY_START << ")\n";
                        }

                switch ( yy_act )
        { /* beginning of action switch */
/* %% [13.0] actions go here */
                        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;

/* Vcsn Syntax */
case 1:
YY_RULE_SETUP
#line 66 "lib/vcsn/rat/scan.ll"
return parser::make_LPAREN({}, loc);
        YY_BREAK
case 2:
YY_RULE_SETUP
#line 67 "lib/vcsn/rat/scan.ll"
return TOK(RPAREN);
        YY_BREAK
case 3:
YY_RULE_SETUP
#line 68 "lib/vcsn/rat/scan.ll"
return TOK(RBRACKET);
        YY_BREAK
case 4:
YY_RULE_SETUP
#line 70 "lib/vcsn/rat/scan.ll"
return TOK(AMPERSAND);
        YY_BREAK
case 5:
YY_RULE_SETUP
#line 71 "lib/vcsn/rat/scan.ll"
return TOK(COLON);
        YY_BREAK
case 6:
YY_RULE_SETUP
#line 72 "lib/vcsn/rat/scan.ll"
return TOK(AMPERSAND_COLON);
        YY_BREAK
case 7:
YY_RULE_SETUP
#line 73 "lib/vcsn/rat/scan.ll"
return TOK(PERCENT);
        YY_BREAK
case 8:
YY_RULE_SETUP
#line 74 "lib/vcsn/rat/scan.ll"
return TOK(PLUS);
        YY_BREAK
case 9:
YY_RULE_SETUP
#line 75 "lib/vcsn/rat/scan.ll"
return TOK(LT_PLUS);
        YY_BREAK
case 10:
YY_RULE_SETUP
#line 76 "lib/vcsn/rat/scan.ll"
return TOK(DOT);
        YY_BREAK
case 11:
YY_RULE_SETUP
#line 77 "lib/vcsn/rat/scan.ll"
return TOK(BACKSLASH);
        YY_BREAK
case 12:
YY_RULE_SETUP
#line 78 "lib/vcsn/rat/scan.ll"
return TOK(SLASH);
        YY_BREAK
case 13:
YY_RULE_SETUP
#line 79 "lib/vcsn/rat/scan.ll"
return TOK(COMMA);
        YY_BREAK
case 14:
YY_RULE_SETUP
#line 80 "lib/vcsn/rat/scan.ll"
return TOK(PIPE);
        YY_BREAK
case 15:
YY_RULE_SETUP
#line 81 "lib/vcsn/rat/scan.ll"
return TOK(AT);
        YY_BREAK
case 16:
YY_RULE_SETUP
#line 82 "lib/vcsn/rat/scan.ll"
return TOK(ZERO);
        YY_BREAK
case 17:
YY_RULE_SETUP
#line 83 "lib/vcsn/rat/scan.ll"
return TOK(ONE);
        YY_BREAK
/* Quantifiers.  */
case 18:
YY_RULE_SETUP
#line 86 "lib/vcsn/rat/scan.ll"
return parser::make_STAR(std::make_tuple(0, 1), loc);
        YY_BREAK
case 19:
YY_RULE_SETUP
#line 87 "lib/vcsn/rat/scan.ll"
return parser::make_STAR(std::make_tuple(-1, -1), loc);
        YY_BREAK
case 20:
YY_RULE_SETUP
#line 88 "lib/vcsn/rat/scan.ll"
return parser::make_STAR(std::make_tuple(1, -1), loc);
        YY_BREAK
case 21:
YY_RULE_SETUP
#line 89 "lib/vcsn/rat/scan.ll"
{
    return parser::make_STAR(quantifier(driver_, loc,
                                        {yytext+1, static_cast<size_t>(yyleng)-2}),
                             loc);
  }
        YY_BREAK
case 22:
YY_RULE_SETUP
#line 94 "lib/vcsn/rat/scan.ll"
{
    // Detect an exponent, do not read it yet. Handle it in the exponent state.
    yyless(0);
    loc -= yyleng;
    exponent = 0;
    yy_push_state(SC_EXPONENT);
  }
        YY_BREAK
case 23:
YY_RULE_SETUP
#line 103 "lib/vcsn/rat/scan.ll"
return TOK(BANG);
        YY_BREAK
case 24:
YY_RULE_SETUP
#line 104 "lib/vcsn/rat/scan.ll"
return TOK(COMPLEMENT);
        YY_BREAK
case 25:
YY_RULE_SETUP
#line 105 "lib/vcsn/rat/scan.ll"
return TOK(TRANSPOSITION);
        YY_BREAK
case 26:
YY_RULE_SETUP
#line 106 "lib/vcsn/rat/scan.ll"
return TOK(TRANSPOSE);
        YY_BREAK
/* Special constructs.  */
case 27:
YY_RULE_SETUP
#line 109 "lib/vcsn/rat/scan.ll"
context.clear(); yy_push_state(SC_CONTEXT);
        YY_BREAK
case 28:
/* rule 28 can match eol */
YY_RULE_SETUP
#line 110 "lib/vcsn/rat/scan.ll"
{
    return parser::make_LPAREN(symbol{yytext + 3, yyleng - 4},
                               loc);
  }
        YY_BREAK
case 29:
/* rule 29 can match eol */
YY_RULE_SETUP
#line 114 "lib/vcsn/rat/scan.ll"
continue;
        YY_BREAK
/* Weights. */
case 30:
YY_RULE_SETUP
#line 117 "lib/vcsn/rat/scan.ll"
yy_push_state(SC_WEIGHT);
        YY_BREAK
/* Character classes.  */
case 31:
YY_RULE_SETUP
#line 120 "lib/vcsn/rat/scan.ll"
yy_push_state(SC_CLASS); return TOK(LBRACKET);
        YY_BREAK
/* White spaces. */
case 32:
YY_RULE_SETUP
#line 123 "lib/vcsn/rat/scan.ll"
loc.step(); continue;
        YY_BREAK
case 33:
/* rule 33 can match eol */
YY_RULE_SETUP
#line 124 "lib/vcsn/rat/scan.ll"
LINE(yyleng); loc.step(); continue;
        YY_BREAK
case 34:
YY_RULE_SETUP
#line 126 "lib/vcsn/rat/scan.ll"
{
    throw parser::syntax_error(loc,
                               std::string{"unexpected character: "} + yytext);
  }
        YY_BREAK

/* Character-class.  Initial [ is eaten. */
case 35:
YY_RULE_SETUP
#line 133 "lib/vcsn/rat/scan.ll"
{
    yy_pop_state();
    return TOK(RBRACKET);
  }
        YY_BREAK
case 36:
YY_RULE_SETUP
#line 137 "lib/vcsn/rat/scan.ll"
return TOK(CARET);
        YY_BREAK
case 37:
YY_RULE_SETUP
#line 138 "lib/vcsn/rat/scan.ll"
return TOK(DASH);
        YY_BREAK
case YY_STATE_EOF(SC_CLASS):
#line 140 "lib/vcsn/rat/scan.ll"
{
    driver_.error(loc, "unexpected end of file in a character-class");
    unput(']');
  }
        YY_BREAK

/* Labels.  */
case 38:
/* rule 38 can match eol */
YY_RULE_SETUP
#line 148 "lib/vcsn/rat/scan.ll"
{
    return parser::make_LETTER({yytext+1, size_t(yyleng-2)}, loc);
  }
        YY_BREAK
case 39:
#line 153 "lib/vcsn/rat/scan.ll"
case 40:
#line 154 "lib/vcsn/rat/scan.ll"
case 41:
#line 155 "lib/vcsn/rat/scan.ll"
case 42:
YY_RULE_SETUP
#line 155 "lib/vcsn/rat/scan.ll"
return parser::make_LETTER({yytext, size_t(yyleng)}, loc);
        YY_BREAK

/* Context embedded in a $(?@...) directive.  */
case 43:
YY_RULE_SETUP
#line 160 "lib/vcsn/rat/scan.ll"
{
    ++nesting;
    context.append(yytext, yyleng);
  }
        YY_BREAK
case 44:
YY_RULE_SETUP
#line 164 "lib/vcsn/rat/scan.ll"
{
    if (nesting)
      {
        --nesting;
        context.append(yytext, yyleng);
      }
    else
      {
        yy_pop_state();
        driver_.context(context);
        context.clear();
      }
  }
        YY_BREAK
case 45:
YY_RULE_SETUP
#line 177 "lib/vcsn/rat/scan.ll"
context.append(yytext, yyleng);
        YY_BREAK
case 46:
/* rule 46 can match eol */
YY_RULE_SETUP
#line 178 "lib/vcsn/rat/scan.ll"
LINE(yyleng); context.append(yytext, yyleng);
        YY_BREAK
case YY_STATE_EOF(SC_CONTEXT):
#line 180 "lib/vcsn/rat/scan.ll"
{
    driver_.error(loc, "unexpected end of file in a context comment");
    unput(')');
  }
        YY_BREAK

/* UTF-8 Exponent */
case 47:
YY_RULE_SETUP
#line 187 "lib/vcsn/rat/scan.ll"
exponent *= 10;
        YY_BREAK
case 48:
YY_RULE_SETUP
#line 188 "lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 1;
        YY_BREAK
case 49:
YY_RULE_SETUP
#line 189 "lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 2;
        YY_BREAK
case 50:
YY_RULE_SETUP
#line 190 "lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 3;
        YY_BREAK
case 51:
YY_RULE_SETUP
#line 191 "lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 4;
        YY_BREAK
case 52:
YY_RULE_SETUP
#line 192 "lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 5;
        YY_BREAK
case 53:
YY_RULE_SETUP
#line 193 "lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 6;
        YY_BREAK
case 54:
YY_RULE_SETUP
#line 194 "lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 7;
        YY_BREAK
case 55:
YY_RULE_SETUP
#line 195 "lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 8;
        YY_BREAK
case 56:
YY_RULE_SETUP
#line 196 "lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 9;
        YY_BREAK
case 57:
/* rule 57 can match eol */
YY_RULE_SETUP
#line 197 "lib/vcsn/rat/scan.ll"
{
    // The end of the exponent was met, do not read it as it would be lost.
    yyless(0);
    loc -= yyleng;
    yy_pop_state();
    return parser::make_STAR(std::make_tuple(exponent, exponent), loc);
  }
        YY_BREAK
case YY_STATE_EOF(SC_EXPONENT):
#line 204 "lib/vcsn/rat/scan.ll"
{
    yy_pop_state();
    return parser::make_STAR(std::make_tuple(exponent, exponent), loc);
  }
        YY_BREAK

/* Weight.  */
case 58:
YY_RULE_SETUP
#line 211 "lib/vcsn/rat/scan.ll"
{
    ++nesting;
    s.append(yytext, yyleng);
  }
        YY_BREAK
case 59:
YY_RULE_SETUP
#line 216 "lib/vcsn/rat/scan.ll"
{
    if (nesting)
      {
        --nesting;
        s.append(yytext, yyleng);
      }
    else
      {
        yy_pop_state();
        return parser::make_WEIGHT(s, loc);
      }
  }
        YY_BREAK
/* "⟨" is e2 9f a8, and "⟩" is e2 9f a9. */
case 60:
/* rule 60 can match eol */
YY_RULE_SETUP
#line 230 "lib/vcsn/rat/scan.ll"
s.append(yytext, yyleng);
        YY_BREAK
case YY_STATE_EOF(SC_WEIGHT):
#line 232 "lib/vcsn/rat/scan.ll"
{
    driver_.error(loc, "unexpected end of file in a weight");
    unput('>');
  }
        YY_BREAK

case 61:
YY_RULE_SETUP
#line 238 "lib/vcsn/rat/scan.ll"
ECHO;
        YY_BREAK
#line 1326 "lib/vcsn/rat/scan.cc"
case YY_STATE_EOF(INITIAL):
        yyterminate();

        case YY_END_OF_BUFFER:
                {
                /* Amount of text matched not including the EOB char. */
                int yy_amount_of_matched_text = (int) (yy_cp - (yytext_ptr)) - 1;

                /* Undo the effects of YY_DO_BEFORE_ACTION. */
                *yy_cp = (yy_hold_char);
                YY_RESTORE_YY_MORE_OFFSET

                if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
                        {
                        /* We're scanning a new file or input source.  It's
                         * possible that this happened because the user
                         * just pointed yyin at a new source and called
                         * yylex().  If so, then we have to assure
                         * consistency between YY_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.
                         */
                        (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
/* %if-c-only */
/* %endif */
/* %if-c++-only */
                        YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin.rdbuf();
/* %endif */
                        YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
                        }

                /* Note that here we test for yy_c_buf_p "<=" to the position
                 * of the first EOB in the buffer, since yy_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 ( (yy_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
                        { /* This was really a NUL. */
                        yy_state_type yy_next_state;

                        (yy_c_buf_p) = (yytext_ptr) + yy_amount_of_matched_text;

                        yy_current_state = yy_get_previous_state(  );

                        /* Okay, we're now positioned to make the NUL
                         * transition.  We couldn't have
                         * yy_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).
                         */

                        yy_next_state = yy_try_NUL_trans( yy_current_state );

                        yy_bp = (yytext_ptr) + YY_MORE_ADJ;

                        if ( yy_next_state )
                                {
                                /* Consume the NUL. */
                                yy_cp = ++(yy_c_buf_p);
                                yy_current_state = yy_next_state;
                                goto yy_match;
                                }

                        else
                                {
/* %% [14.0] code to do back-up for compressed tables and set up yy_cp goes here */
                                yy_cp = (yy_c_buf_p);
                                goto yy_find_action;
                                }
                        }

                else switch ( yy_get_next_buffer(  ) )
                        {
                        case EOB_ACT_END_OF_FILE:
                                {
                                (yy_did_buffer_switch_on_eof) = 0;

                                if ( yywrap(  ) )
                                        {
                                        /* Note: because we've taken care in
                                         * yy_get_next_buffer() to have set up
                                         * yytext, we can now set up
                                         * yy_c_buf_p so that if some total
                                         * hoser (like flex itself) wants to
                                         * call the scanner after we return the
                                         * YY_NULL, it'll still work - another
                                         * YY_NULL will get returned.
                                         */
                                        (yy_c_buf_p) = (yytext_ptr) + YY_MORE_ADJ;

                                        yy_act = YY_STATE_EOF(YY_START);
                                        goto do_action;
                                        }

                                else
                                        {
                                        if ( ! (yy_did_buffer_switch_on_eof) )
                                                YY_NEW_FILE;
                                        }
                                break;
                                }

                        case EOB_ACT_CONTINUE_SCAN:
                                (yy_c_buf_p) =
                                        (yytext_ptr) + yy_amount_of_matched_text;

                                yy_current_state = yy_get_previous_state(  );

                                yy_cp = (yy_c_buf_p);
                                yy_bp = (yytext_ptr) + YY_MORE_ADJ;
                                goto yy_match;

                        case EOB_ACT_LAST_MATCH:
                                (yy_c_buf_p) =
                                &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)];

                                yy_current_state = yy_get_previous_state(  );

                                yy_cp = (yy_c_buf_p);
                                yy_bp = (yytext_ptr) + YY_MORE_ADJ;
                                goto yy_find_action;
                        }
                break;
                }

        default:
                YY_FATAL_ERROR(
                        "fatal flex scanner internal error--no action found" );
        } /* end of action switch */
                } /* end of scanning one token */
        } /* end of user's declarations */
} /* end of yylex */
/* %ok-for-header */

/* %if-c++-only */
/* %not-for-header */
/* The contents of this function are C++ specific, so the () macro is not used.
 * This constructor simply maintains backward compatibility.
 * DEPRECATED
 */
yyFlexLexer::yyFlexLexer( std::istream* arg_yyin, std::ostream* arg_yyout ):
        yyin(arg_yyin ? arg_yyin->rdbuf() : std::cin.rdbuf()),
        yyout(arg_yyout ? arg_yyout->rdbuf() : std::cout.rdbuf())
{
        ctor_common();
}

/* The contents of this function are C++ specific, so the () macro is not used.
 */
yyFlexLexer::yyFlexLexer( std::istream& arg_yyin, std::ostream& arg_yyout ):
        yyin(arg_yyin.rdbuf()),
        yyout(arg_yyout.rdbuf())
{
        ctor_common();
}

/* The contents of this function are C++ specific, so the () macro is not used.
 */
void yyFlexLexer::ctor_common()
{
        yy_c_buf_p = 0;
        yy_init = 0;
        yy_start = 0;
        yy_flex_debug = 0;
        yylineno = 1;   // this will only get updated if %option yylineno

        yy_did_buffer_switch_on_eof = 0;

        yy_looking_for_trail_begin = 0;
        yy_more_flag = 0;
        yy_more_len = 0;
        yy_more_offset = yy_prev_more_offset = 0;

        yy_start_stack_ptr = yy_start_stack_depth = 0;
        yy_start_stack = NULL;

        yy_buffer_stack = NULL;
        yy_buffer_stack_top = 0;
        yy_buffer_stack_max = 0;

        yy_state_buf = 0;

}

/* The contents of this function are C++ specific, so the () macro is not used.
 */
yyFlexLexer::~yyFlexLexer()
{
        delete [] yy_state_buf;
        yyfree( yy_start_stack  );
        yy_delete_buffer( YY_CURRENT_BUFFER );
        yyfree( yy_buffer_stack  );
}

/* The contents of this function are C++ specific, so the () macro is not used.
 */
void yyFlexLexer::switch_streams( std::istream& new_in, std::ostream& new_out )
{
        // was if( new_in )
        yy_delete_buffer( YY_CURRENT_BUFFER );
        yy_switch_to_buffer( yy_create_buffer( new_in, YY_BUF_SIZE  ) );

        // was if( new_out )
        yyout.rdbuf(new_out.rdbuf());
}

/* The contents of this function are C++ specific, so the () macro is not used.
 */
void yyFlexLexer::switch_streams( std::istream* new_in, std::ostream* new_out )
{
        if( ! new_in ) {
                new_in = &yyin;
        }

        if ( ! new_out ) {
                new_out = &yyout;
        }

        switch_streams(*new_in, *new_out);
}

#ifdef YY_INTERACTIVE
int yyFlexLexer::LexerInput( char* buf, int /* max_size */ )
#else
int yyFlexLexer::LexerInput( char* buf, int max_size )
#endif
{
        if ( yyin.eof() || yyin.fail() )
                return 0;

#ifdef YY_INTERACTIVE
        yyin.get( buf[0] );

        if ( yyin.eof() )
                return 0;

        if ( yyin.bad() )
                return -1;

        return 1;

#else
        (void) yyin.read( buf, max_size );

        if ( yyin.bad() )
                return -1;
        else
                return yyin.gcount();
#endif
}

void yyFlexLexer::LexerOutput( const char* buf, int size )
{
        (void) yyout.write( buf, size );
}
/* %ok-for-header */

/* %endif */

/* yy_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
 */
/* %if-c-only */
/* %endif */
/* %if-c++-only */
int yyFlexLexer::yy_get_next_buffer()
/* %endif */
{
        char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
        char *source = (yytext_ptr);
        int number_to_move, i;
        int ret_val;

        if ( (yy_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] )
                YY_FATAL_ERROR(
                "fatal flex scanner internal error--end of buffer missed" );

        if ( YY_CURRENT_BUFFER_LVALUE->yy_fill_buffer == 0 )
                { /* Don't try to fill the buffer, so this is an EOF. */
                if ( (yy_c_buf_p) - (yytext_ptr) - YY_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) ((yy_c_buf_p) - (yytext_ptr) - 1);

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

        if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
                /* don't do the read, it's not guaranteed to return an EOF,
                 * just force an EOF
                 */
                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars) = 0;

        else
                {
                        int num_to_read =
                        YY_CURRENT_BUFFER_LVALUE->yy_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 */
                        YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE;

                        int yy_c_buf_p_offset =
                                (int) ((yy_c_buf_p) - b->yy_ch_buf);

                        if ( b->yy_is_our_buffer )
                                {
                                int new_size = b->yy_buf_size * 2;

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

                                b->yy_ch_buf = (char *)
                                        /* Include room in for 2 EOB chars. */
                                        yyrealloc( (void *) b->yy_ch_buf,
                                                         (yy_size_t) (b->yy_buf_size + 2)  );
                                }
                        else
                                /* Can't grow it, we don't own it. */
                                b->yy_ch_buf = NULL;

                        if ( ! b->yy_ch_buf )
                                YY_FATAL_ERROR(
                                "fatal error - scanner input buffer overflow" );

                        (yy_c_buf_p) = &b->yy_ch_buf[yy_c_buf_p_offset];

                        num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size -
                                                number_to_move - 1;

                        }

                if ( num_to_read > YY_READ_BUF_SIZE )
                        num_to_read = YY_READ_BUF_SIZE;

                /* Read in more data. */
                YY_INPUT( (&YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move]),
                        (yy_n_chars), num_to_read );

                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
                }

        if ( (yy_n_chars) == 0 )
                {
                if ( number_to_move == YY_MORE_ADJ )
                        {
                        ret_val = EOB_ACT_END_OF_FILE;
                        yyrestart( yyin  );
                        }

                else
                        {
                        ret_val = EOB_ACT_LAST_MATCH;
                        YY_CURRENT_BUFFER_LVALUE->yy_buffer_status =
                                YY_BUFFER_EOF_PENDING;
                        }
                }

        else
                ret_val = EOB_ACT_CONTINUE_SCAN;

        if (((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
                /* Extend the array by 50%, plus the number we really need. */
                int new_size = (yy_n_chars) + number_to_move + ((yy_n_chars) >> 1);
                YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
                        (void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size  );
                if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
                        YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
                /* "- 2" to take care of EOB's */
                YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
        }

        (yy_n_chars) += number_to_move;
        YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] = YY_END_OF_BUFFER_CHAR;
        YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars) + 1] = YY_END_OF_BUFFER_CHAR;

        (yytext_ptr) = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[0];

        return ret_val;
}

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

/* %if-c-only */
/* %not-for-header */
/* %endif */
/* %if-c++-only */
    yy_state_type yyFlexLexer::yy_get_previous_state()
/* %endif */
{
        yy_state_type yy_current_state;
        char *yy_cp;
    
/* %% [15.0] code to get the start state into yy_current_state goes here */
        yy_current_state = (yy_start);

        for ( yy_cp = (yytext_ptr) + YY_MORE_ADJ; yy_cp < (yy_c_buf_p); ++yy_cp )
                {
/* %% [16.0] code to find the next state goes here */
                YY_CHAR yy_c = (*yy_cp ? yy_ec[YY_SC_TO_UI(*yy_cp)] : 1);
                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 >= 131 )
                                yy_c = yy_meta[yy_c];
                        }
                yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
                }

        return yy_current_state;
}

/* yy_try_NUL_trans - try to make a transition on the NUL character
 *
 * synopsis
 *      next_state = yy_try_NUL_trans( current_state );
 */
/* %if-c-only */
/* %endif */
/* %if-c++-only */
    yy_state_type yyFlexLexer::yy_try_NUL_trans( yy_state_type yy_current_state )
/* %endif */
{
        int yy_is_jam;
    /* %% [17.0] code to find the next state, and perhaps do backing up, goes here */
        char *yy_cp = (yy_c_buf_p);

        YY_CHAR yy_c = 1;
        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 >= 131 )
                        yy_c = yy_meta[yy_c];
                }
        yy_current_state = yy_nxt[yy_base[yy_current_state] + yy_c];
        yy_is_jam = (yy_current_state == 130);

                return yy_is_jam ? 0 : yy_current_state;
}

#ifndef YY_NO_UNPUT
/* %if-c-only */
/* %endif */
/* %if-c++-only */
    void yyFlexLexer::yyunput( int c, char* yy_bp)
/* %endif */
{
        char *yy_cp;
    
    yy_cp = (yy_c_buf_p);

        /* undo effects of setting up yytext */
        *yy_cp = (yy_hold_char);

        if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 )
                { /* need to shift things up to make room */
                /* +2 for EOB chars. */
                int number_to_move = (yy_n_chars) + 2;
                char *dest = &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[
                                        YY_CURRENT_BUFFER_LVALUE->yy_buf_size + 2];
                char *source =
                                &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[number_to_move];

                while ( source > YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
                        *--dest = *--source;

                yy_cp += (int) (dest - source);
                yy_bp += (int) (dest - source);
                YY_CURRENT_BUFFER_LVALUE->yy_n_chars =
                        (yy_n_chars) = (int) YY_CURRENT_BUFFER_LVALUE->yy_buf_size;

                if ( yy_cp < YY_CURRENT_BUFFER_LVALUE->yy_ch_buf + 2 )
                        YY_FATAL_ERROR( "flex scanner push-back overflow" );
                }

        *--yy_cp = (char) c;

/* %% [18.0] update yylineno here */

        (yytext_ptr) = yy_bp;
        (yy_hold_char) = *yy_cp;
        (yy_c_buf_p) = yy_cp;
}
/* %if-c-only */
/* %endif */
#endif

/* %if-c-only */
/* %endif */
/* %if-c++-only */
    int yyFlexLexer::yyinput()
/* %endif */
{
        int c;
    
        *(yy_c_buf_p) = (yy_hold_char);

        if ( *(yy_c_buf_p) == YY_END_OF_BUFFER_CHAR )
                {
                /* yy_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 ( (yy_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->yy_ch_buf[(yy_n_chars)] )
                        /* This was really a NUL. */
                        *(yy_c_buf_p) = '\0';

                else
                        { /* need more input */
                        int offset = (int) ((yy_c_buf_p) - (yytext_ptr));
                        ++(yy_c_buf_p);

                        switch ( yy_get_next_buffer(  ) )
                                {
                                case EOB_ACT_LAST_MATCH:
                                        /* This happens because yy_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. */
                                        yyrestart( yyin );

                                        /*FALLTHROUGH*/

                                case EOB_ACT_END_OF_FILE:
                                        {
                                        if ( yywrap(  ) )
                                                return 0;

                                        if ( ! (yy_did_buffer_switch_on_eof) )
                                                YY_NEW_FILE;
#ifdef __cplusplus
                                        return yyinput();
#else
                                        return input();
#endif
                                        }

                                case EOB_ACT_CONTINUE_SCAN:
                                        (yy_c_buf_p) = (yytext_ptr) + offset;
                                        break;
                                }
                        }
                }

        c = *(unsigned char *) (yy_c_buf_p);    /* cast for 8-bit char's */
        *(yy_c_buf_p) = '\0';   /* preserve yytext */
        (yy_hold_char) = *++(yy_c_buf_p);

/* %% [19.0] update BOL and yylineno */

        return c;
}
/* %if-c-only */
/* %endif */

/* %if-c-only */
/* %endif */
/* %if-c++-only */
    void yyFlexLexer::yyrestart( std::istream& input_file )
/* %endif */
{
    
        if ( ! YY_CURRENT_BUFFER ){
        yyensure_buffer_stack ();
                YY_CURRENT_BUFFER_LVALUE =
            yy_create_buffer( yyin, YY_BUF_SIZE );
        }

        yy_init_buffer( YY_CURRENT_BUFFER, input_file );
        yy_load_buffer_state(  );
}

/* %if-c++-only */
void yyFlexLexer::yyrestart( std::istream* input_file )
{
        if( ! input_file ) {
                input_file = &yyin;
        }
        yyrestart( *input_file );
}
/* %endif */

/* %if-c-only */
/* %endif */
/* %if-c++-only */
    void yyFlexLexer::yy_switch_to_buffer( YY_BUFFER_STATE new_buffer )
/* %endif */
{
    
        /* TODO. We should be able to replace this entire function body
         * with
         *              yypop_buffer_state();
         *              yypush_buffer_state(new_buffer);
     */
        yyensure_buffer_stack ();
        if ( YY_CURRENT_BUFFER == new_buffer )
                return;

        if ( YY_CURRENT_BUFFER )
                {
                /* Flush out information for old buffer. */
                *(yy_c_buf_p) = (yy_hold_char);
                YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
                }

        YY_CURRENT_BUFFER_LVALUE = new_buffer;
        yy_load_buffer_state(  );

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

/* %if-c-only */
/* %endif */
/* %if-c++-only */
    void yyFlexLexer::yy_load_buffer_state()
/* %endif */
{
        (yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
        (yytext_ptr) = (yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
/* %if-c-only */
/* %endif */
/* %if-c++-only */
        yyin.rdbuf(YY_CURRENT_BUFFER_LVALUE->yy_input_file);
/* %endif */
        (yy_hold_char) = *(yy_c_buf_p);
}

/* %if-c-only */
/* %endif */
/* %if-c++-only */
    YY_BUFFER_STATE yyFlexLexer::yy_create_buffer( std::istream& file, int size )
/* %endif */
{
        YY_BUFFER_STATE b;
    
        b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state )  );
        if ( ! b )
                YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );

        b->yy_buf_size = size;

        /* yy_ch_buf has to be 2 characters longer than the size given because
         * we need to put in 2 end-of-buffer characters.
         */
        b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2)  );
        if ( ! b->yy_ch_buf )
                YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );

        b->yy_is_our_buffer = 1;

        yy_init_buffer( b, file );

        return b;
}

/* %if-c++-only */
        YY_BUFFER_STATE yyFlexLexer::yy_create_buffer( std::istream* file, int size )
{
        return yy_create_buffer( *file, size );
}
/* %endif */

/* %if-c-only */
/* %endif */
/* %if-c++-only */
    void yyFlexLexer::yy_delete_buffer( YY_BUFFER_STATE b )
/* %endif */
{
    
        if ( ! b )
                return;

        if ( b == YY_CURRENT_BUFFER ) /* Not sure if we should pop here. */
                YY_CURRENT_BUFFER_LVALUE = (YY_BUFFER_STATE) 0;

        if ( b->yy_is_our_buffer )
                yyfree( (void *) b->yy_ch_buf  );

        yyfree( (void *) b  );
}

/* Initializes or reinitializes a buffer.
 * This function is sometimes called more than once on the same buffer,
 * such as during a yyrestart() or at EOF.
 */
/* %if-c-only */
/* %endif */
/* %if-c++-only */
    void yyFlexLexer::yy_init_buffer( YY_BUFFER_STATE b, std::istream& file )
/* %endif */

{
        int oerrno = errno;
    
        yy_flush_buffer( b );

/* %if-c-only */
/* %endif */
/* %if-c++-only */
        b->yy_input_file = file.rdbuf();
/* %endif */
        b->yy_fill_buffer = 1;

    /* If b is the current buffer, then yy_init_buffer was _probably_
     * called from yyrestart() or through yy_get_next_buffer.
     * In that case, we don't want to reset the lineno or column.
     */
    if (b != YY_CURRENT_BUFFER){
        b->yy_bs_lineno = 1;
        b->yy_bs_column = 0;
    }

/* %if-c-only */
/* %endif */
/* %if-c++-only */
        b->yy_is_interactive = 0;
/* %endif */
        errno = oerrno;
}

/* %if-c-only */
/* %endif */
/* %if-c++-only */
    void yyFlexLexer::yy_flush_buffer( YY_BUFFER_STATE b )
/* %endif */
{
        if ( ! b )
                return;

        b->yy_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->yy_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
        b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR;

        b->yy_buf_pos = &b->yy_ch_buf[0];

        b->yy_at_bol = 1;
        b->yy_buffer_status = YY_BUFFER_NEW;

        if ( b == YY_CURRENT_BUFFER )
                yy_load_buffer_state(  );
}

/* %if-c-or-c++ */
/* %if-c-only */
/* %endif */
/* %if-c++-only */
void yyFlexLexer::yypush_buffer_state (YY_BUFFER_STATE new_buffer)
/* %endif */
{
        if (new_buffer == NULL)
                return;

        yyensure_buffer_stack();

        /* This block is copied from yy_switch_to_buffer. */
        if ( YY_CURRENT_BUFFER )
                {
                /* Flush out information for old buffer. */
                *(yy_c_buf_p) = (yy_hold_char);
                YY_CURRENT_BUFFER_LVALUE->yy_buf_pos = (yy_c_buf_p);
                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = (yy_n_chars);
                }

        /* Only push if top exists. Otherwise, replace top. */
        if (YY_CURRENT_BUFFER)
                (yy_buffer_stack_top)++;
        YY_CURRENT_BUFFER_LVALUE = new_buffer;

        /* copied from yy_switch_to_buffer. */
        yy_load_buffer_state(  );
        (yy_did_buffer_switch_on_eof) = 1;
}
/* %endif */

/* %if-c-or-c++ */
/* %if-c-only */
/* %endif */
/* %if-c++-only */
void yyFlexLexer::yypop_buffer_state (void)
/* %endif */
{
        if (!YY_CURRENT_BUFFER)
                return;

        yy_delete_buffer(YY_CURRENT_BUFFER );
        YY_CURRENT_BUFFER_LVALUE = NULL;
        if ((yy_buffer_stack_top) > 0)
                --(yy_buffer_stack_top);

        if (YY_CURRENT_BUFFER) {
                yy_load_buffer_state(  );
                (yy_did_buffer_switch_on_eof) = 1;
        }
}
/* %endif */

/* %if-c-or-c++ */
/* Allocates the stack if it does not exist.
 *  Guarantees space for at least one push.
 */
/* %if-c-only */
/* %endif */
/* %if-c++-only */
void yyFlexLexer::yyensure_buffer_stack(void)
/* %endif */
{
        yy_size_t num_to_alloc;
    
        if (!(yy_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; /* After all that talk, this was set to 1 anyways... */
                (yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
                                                                (num_to_alloc * sizeof(struct yy_buffer_state*)
                                                                );
                if ( ! (yy_buffer_stack) )
                        YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );

                memset((yy_buffer_stack), 0, num_to_alloc * sizeof(struct yy_buffer_state*));

                (yy_buffer_stack_max) = num_to_alloc;
                (yy_buffer_stack_top) = 0;
                return;
        }

        if ((yy_buffer_stack_top) >= ((yy_buffer_stack_max)) - 1){

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

                num_to_alloc = (yy_buffer_stack_max) + grow_size;
                (yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc
                                                                ((yy_buffer_stack),
                                                                num_to_alloc * sizeof(struct yy_buffer_state*)
                                                                );
                if ( ! (yy_buffer_stack) )
                        YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );

                /* zero only the new slots.*/
                memset((yy_buffer_stack) + (yy_buffer_stack_max), 0, grow_size * sizeof(struct yy_buffer_state*));
                (yy_buffer_stack_max) = num_to_alloc;
        }
}
/* %endif */

/* %if-c-only */
/* %endif */

/* %if-c-only */
/* %endif */

/* %if-c-only */
/* %endif */

/* %if-c-only */
/* %endif */
/* %if-c++-only */
    void yyFlexLexer::yy_push_state( int _new_state )
/* %endif */
{
        if ( (yy_start_stack_ptr) >= (yy_start_stack_depth) )
                {
                yy_size_t new_size;

                (yy_start_stack_depth) += YY_START_STACK_INCR;
                new_size = (yy_size_t) (yy_start_stack_depth) * sizeof( int );

                if ( ! (yy_start_stack) )
                        (yy_start_stack) = (int *) yyalloc( new_size  );

                else
                        (yy_start_stack) = (int *) yyrealloc(
                                        (void *) (yy_start_stack), new_size  );

                if ( ! (yy_start_stack) )
                        YY_FATAL_ERROR( "out of memory expanding start-condition stack" );
                }

        (yy_start_stack)[(yy_start_stack_ptr)++] = YY_START;

        BEGIN(_new_state);
}

/* %if-c-only */
/* %endif */
/* %if-c++-only */
    void yyFlexLexer::yy_pop_state()
/* %endif */
{
        if ( --(yy_start_stack_ptr) < 0 )
                YY_FATAL_ERROR( "start-condition stack underflow" );

        BEGIN((yy_start_stack)[(yy_start_stack_ptr)]);
}

#ifndef YY_EXIT_FAILURE
#define YY_EXIT_FAILURE 2
#endif

/* %if-c-only */
/* %endif */
/* %if-c++-only */
void yyFlexLexer::LexerError( const char* msg )
{
        std::cerr << msg << std::endl;
        exit( YY_EXIT_FAILURE );
}
/* %endif */

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

#undef yyless
#define yyless(n) \
        do \
                { \
                /* Undo effects of setting up yytext. */ \
        int yyless_macro_arg = (n); \
        YY_LESS_LINENO(yyless_macro_arg);\
                yytext[yyleng] = (yy_hold_char); \
                (yy_c_buf_p) = yytext + yyless_macro_arg; \
                (yy_hold_char) = *(yy_c_buf_p); \
                *(yy_c_buf_p) = '\0'; \
                yyleng = yyless_macro_arg; \
                } \
        while ( 0 )

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

/* %if-c-only */
/* %if-reentrant */
/* %endif */
/* %if-reentrant */
/* %endif */
/* %endif */

/* %if-reentrant */
/* %if-bison-bridge */
/* %endif */
/* %endif if-c-only */

/* %if-c-only */
/* %endif */

/* %if-c-only SNIP! this currently causes conflicts with the c++ scanner */
/* %if-reentrant */
/* %endif */
/* %endif */

/*
 * Internal utility routines.
 */

#ifndef yytext_ptr
static void yy_flex_strncpy (char* s1, const char * s2, int n )
{
                
        int i;
        for ( i = 0; i < n; ++i )
                s1[i] = s2[i];
}
#endif

#ifdef YY_NEED_STRLEN
static int yy_flex_strlen (const char * s )
{
        int n;
        for ( n = 0; s[n]; ++n )
                ;

        return n;
}
#endif

void *yyalloc (yy_size_t  size )
{
                        return malloc(size);
}

void *yyrealloc  (void * ptr, yy_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 realloc(ptr, size);
}

void yyfree (void * ptr )
{
                        free( (char *) ptr );   /* see yyrealloc() for (char *) cast */
}

/* %if-tables-serialization definitions */
/* %define-yytables   The name for this specific scanner's tables. */
#define YYTABLES_NAME "yytables"
/* %endif */

/* %ok-for-header */

#line 238 "lib/vcsn/rat/scan.ll"

namespace
{
  template <typename Out>
  Out
  lexical_cast(driver& d, const location& loc, const std::string& s)
  {
    try
      {
        return boost::lexical_cast<Out>(s);
      }
    catch (const boost::bad_lexical_cast&)
      {
        d.error(loc, "invalid numerical literal: " + s);
        return 0;
      }
  }

  int arity(driver& d, const location& loc, const std::string& s)
  {
    if (s.empty())
      return -1;
    else
      return lexical_cast<int>(d, loc, s);
  }

  irange_type
  quantifier(driver& d, const location& loc, const std::string& s)
  {
    auto arity_re = std::regex{"([0-9]*)(,?)([0-9]*)", std::regex::extended};
    std::smatch minmax;
    if (!std::regex_match(s, minmax, arity_re))
      throw std::runtime_error("cannot match arity: " + s);
    auto res = irange_type{arity(d, loc, minmax[1].str()),
                           arity(d, loc, minmax[3].str())};
    if (minmax[2].str().empty())
      // No comma: single argument.
      std::get<1>(res) = std::get<0>(res);
    return res;
  }
}

// Do not use %option noyywrap, because then flex generates the
// same definition of yywrap, but outside the namespaces, so it
// defines it for ::yyFlexLexer instead of
// ::vcsn::rat::yyFlexLexer.
int yyFlexLexer::yywrap() { return 1; }

// Beware of the dummy Flex interface.  One would like to use:
//
// yypush_buffer_state(yy_create_buffer(yyin, YY_BUF_SIZE));
//
// and
//
// yypush_buffer_state(yy_scan_bytes(e.c_str(), e.size()));
//
// but the latter (yy_scan_bytes) calls yy_switch_to_buffer, so in
// effect calling yypush_buffer_state saves the new state instead
// of the old one.
//
// So do it in two steps, quite different from what is suggested
// in the documentation: save the old context, switch to the new
// one.

void yyFlexLexer::scan_open_(std::istream& f)
{
  set_debug(!!getenv("YYSCAN"));
  yypush_buffer_state(YY_CURRENT_BUFFER);
  yy_switch_to_buffer(yy_create_buffer(&f, YY_BUF_SIZE));
}

void yyFlexLexer::scan_close_()
{
  yypop_buffer_state();
}

YY_FLEX_NAMESPACE_END

// Local Variables:
// mode: C++
// End: