// Added by flex++.
#pragma GCC diagnostic ignored "-Wsign-compare"
// Check Clang first, as it does not support -Wzero... but it
// defines __GNUC__.
#if defined __clang__
# pragma clang diagnostic ignored "-Wdeprecated"
# pragma clang diagnostic ignored "-Wnull-conversion"
#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 2 "lib/vcsn/rat/scan.cc"
#line 7 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
// Define YY_DECL.
#include <lib/vcsn/rat/parse.hh>

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



#line 11 "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 0
#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

#endif /* ! C99 */

#endif /* ! FLEXINT_H */

/* %endif */

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

#ifdef __cplusplus

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

#else	/* ! __cplusplus */

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

#define YY_USE_CONST

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

#ifdef YY_USE_CONST
#define yyconst const
#else
#define yyconst
#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 unsigned
 * integer for use as an array index.  If the signed char is negative,
 * we want to instead treat it as an 8-bit unsigned char, hence the
 * double cast.
 */
#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
/* %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 yy_size_t 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.
	 */
	yy_size_t yy_buf_size;

	/* Number of characters read into yy_ch_buf, not including EOB
	 * characters.
	 */
	yy_size_t yy_n_chars;

	/* Whether we "own" the buffer - i.e., we know we created it,
	 * and can realloc() it to grow it, and should free() it to
	 * delete it.
	 */
	int yy_is_our_buffer;

	/* Whether this is an "interactive" input source; if so, and
	 * if we're using stdio for input, then we want to use getc()
	 * instead of fread(), to make sure we stop fetching input after
	 * each newline.
	 */
	int yy_is_interactive;

	/* Whether we're considered to be at the beginning of a line.
	 * If so, '^' rules will be active on the next match, otherwise
	 * not.
	 */
	int yy_at_bol;

    int yy_bs_lineno; /**< The line count. */
    int yy_bs_column; /**< The column count. */
    
	/* Whether to try to fill the input buffer when we reach the
	 * end of it.
	 */
	int yy_fill_buffer;

	int yy_buffer_status;

#define YY_BUFFER_NEW 0
#define YY_BUFFER_NORMAL 1
	/* When an EOF's been seen but there's still some text to process
	 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
	 * shouldn't try reading from the input source any more.  We might
	 * still have a bunch of tokens to match, though, because of
	 * possible backing-up.
	 *
	 * When we actually see the EOF, we change the status to "new"
	 * (via yyrestart()), so that the user can continue scanning by
	 * just pointing yyin at a new input file.
	 */
#define YY_BUFFER_EOF_PENDING 2

	};
#endif /* !YY_STRUCT_YY_BUFFER_STATE */

/* %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 unsigned char 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 = (size_t) (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 63
#define YY_END_OF_BUFFER 64
/* 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 yyconst flex_int16_t yy_accept[129] =
    {   0,
        0,    0,    0,    0,    0,    0,    0,    0,    0,    0,
       64,   44,   28,   29,   21,    6,    3,   44,    1,    2,
       17,    7,   12,    9,    4,   26,   16,   27,   44,   44,
       13,   44,   44,   44,   44,   63,   32,   44,   30,   31,
       47,   48,   45,   46,   59,   59,   59,   62,   60,   61,
       62,   28,   29,    5,    0,    0,    0,    8,   43,   43,
       36,   37,   15,   38,   39,   40,   41,   42,   43,   14,
        0,    0,    0,    0,    0,    0,    0,    0,    0,   19,
       21,   20,   15,    0,    0,    0,    0,    0,   47,   48,
       51,   52,   50,    0,   62,    0,   33,    0,   33,    0,

        0,   24,    0,    0,   17,   18,    0,   11,   16,   23,
       10,   22,   14,   26,   49,   53,   54,   55,   56,   57,
       58,   60,   61,    0,   25,   34,   35,    0
    } ;

static yyconst 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,   30,   31,   32,   24,

       33,   34,    1,    1,    1,    1,    1,    1,    1,   35,
        1,    1,    1,   36,    1,   37,    1,   38,    1,   39,
        1,   40,   41,   42,   43,    1,    1,    1,   44,    1,
        1,    1,   45,    1,    1,   46,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
       47,    1,    1,    1,    1,   48,    1,    1,   49,    1,
        1,    1,    1,    1,    1,    1,    1,   50,   51,    1,
        1,   52,    1,    1,    1,   53,    1,   54,   55,   56,
       57,   58,   59,   60,   61,    1,    1,    1,    1,    1,
        1,    1,    1,   62,    1,    1,    1,    1,    1,    1,

        1,    1,    1,    1,    1,   63,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,   64,   65,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1
    } ;

static yyconst YY_CHAR yy_meta[66] =
    {   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,    1,    1,
        1,    1,    1,    1,    5
    } ;

static yyconst flex_uint16_t yy_base[139] =
    {   0,
        0,   64,   20,   29,   15,   26,   16,   20,   24,   30,
      185,  274,  181,  179,  274,  274,  155,  145,  149,  274,
      274,  274,  274,  274,  274,  157,  274,  274,  113,  143,
      274,    0,  110,    2,   48,  274,  274,   79,  274,  274,
        0,  163,  274,  274,  274,   46,  120,    0,  274,  274,
      108,  140,  133,  274,    6,   13,   64,  274,  274,  118,
      274,  274,  274,  274,  274,  274,  274,  274,  107,  274,
       91,   90,  102,   89,  145,   80,   78,   68,   65,  274,
      274,  274,  274,   41,   32,  120,   57,    3,    0,   35,
      274,  274,  274,  134,    0,   48,  274,   85,   95,  181,

       21,  274,   13,  179,  274,  274,  181,  274,  274,  274,
      274,  274,  274,  274,  274,  274,  274,  274,  274,  274,
      274,  274,  274,    7,  274,  274,  274,  274,  224,  229,
      234,  239,  244,  249,  254,  259,  263,  268
    } ;

static yyconst flex_int16_t yy_def[139] =
    {   0,
      129,  129,  129,  129,  130,  130,  131,  131,  132,  132,
      128,  128,  128,  128,  128,  128,  128,  133,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  134,  128,
      128,  128,  128,  128,  128,  128,  128,  134,  128,  128,
      135,  128,  128,  128,  128,  128,  128,  136,  128,  128,
      128,  128,  128,  128,  133,  137,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  135,  128,
      128,  128,  128,  128,  136,  128,  128,  133,  133,  137,

      138,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  138,  128,  128,  128,    0,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128
    } ;

static yyconst flex_uint16_t yy_nxt[340] =
    {   0,
      128,   13,   14,   15,  128,   16,   17,   18,   19,   20,
       21,   22,   23,   97,   24,   55,  125,   42,   25,   26,
       99,   27,   36,   43,   44,   28,   29,   18,   42,  126,
      125,   36,   56,   37,   43,   44,   18,   90,  128,  100,
       30,   31,   37,   49,   50,  128,   38,   39,   40,   49,
       50,   81,  114,   82,   82,   38,   39,   40,   84,   85,
       82,   32,   33,   34,   35,   13,   14,   15,  101,   16,
       17,   18,   19,   20,   21,   22,   23,   46,   24,  112,
       47,   46,   25,   26,   47,   27,  102,  110,   51,   28,
       29,   86,   97,   87,   51,   60,   88,  122,  123,   91,

       92,  113,   97,  105,   30,   31,   93,  112,   61,   62,
      111,   56,   64,   65,   66,   67,   68,   69,  107,  107,
      110,   56,  109,  104,  104,   32,   33,   34,   35,   60,
      104,  108,  106,  105,  103,   53,  104,  104,  104,  104,
      104,   52,   61,   62,   80,   63,   64,   65,   66,   67,
       68,   69,   70,   71,   72,   73,   96,   73,   74,   75,
       75,   75,   75,   94,   76,   90,   83,   77,   58,   78,
       57,   56,   82,   54,   79,   82,   82,   82,   82,   82,
       82,   53,   52,   55,  128,   80,  115,   80,   99,  116,
      117,  118,  119,  120,  121,  127,  127,  107,  107,  128,

      128,  128,  127,  128,  128,  128,  128,  100,  127,  127,
      127,  127,  127,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,   80,   12,   12,   12,   12,   12,   41,
       41,   41,   41,   41,   45,   45,   45,   45,   45,   48,
       48,   48,   48,   48,   55,   55,  128,   55,   55,   59,
      128,   59,   59,   59,   89,  128,   89,  128,   89,   95,
       95,   95,   95,   98,   98,   98,   98,   98,  124,  124,
      124,  124,  124,   11,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,

      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128
    } ;

static yyconst flex_int16_t yy_chk[340] =
    {   0,
        0,    1,    1,    1,    0,    1,    1,    1,    1,    1,
        1,    1,    1,   55,    1,   56,  124,    5,    1,    1,
       56,    1,    3,    5,    5,    1,    1,    3,    6,  103,
      101,    4,   55,    3,    6,    6,    4,   90,    0,   56,
        1,    1,    4,    9,    9,    0,    3,    3,    3,   10,
       10,   32,   88,   32,   32,    4,    4,    4,   34,   34,
       32,    1,    1,    1,    1,    2,    2,    2,   57,    2,
        2,    2,    2,    2,    2,    2,    2,    7,    2,   85,
        7,    8,    2,    2,    8,    2,   57,   84,    9,    2,
        2,   35,   98,   35,   10,   38,   35,   96,   96,   46,

       46,   87,   99,   87,    2,    2,   46,   79,   38,   38,
       78,   98,   38,   38,   38,   38,   38,   38,   73,   73,
       77,   99,   76,   69,   69,    2,    2,    2,    2,   29,
       69,   74,   72,   71,   60,   53,   69,   69,   69,   69,
       69,   52,   29,   29,   73,   29,   29,   29,   29,   29,
       29,   29,   29,   30,   30,   30,   51,   75,   30,   30,
       30,   75,   75,   47,   30,   42,   33,   30,   26,   30,
       19,   18,   86,   17,   30,   86,   86,   86,   86,   86,
       86,   14,   13,  100,   11,   30,   94,   75,  100,   94,
       94,   94,   94,   94,   94,  104,  104,  107,  107,    0,

        0,    0,  104,    0,    0,    0,    0,  100,  104,  104,
      104,  104,  104,    0,    0,    0,    0,    0,    0,    0,
        0,    0,    0,  107,  129,  129,  129,  129,  129,  130,
      130,  130,  130,  130,  131,  131,  131,  131,  131,  132,
      132,  132,  132,  132,  133,  133,    0,  133,  133,  134,
        0,  134,  134,  134,  135,    0,  135,    0,  135,  136,
      136,  136,  136,  137,  137,  137,  137,  137,  138,  138,
      138,  138,  138,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,

      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128,  128,
      128,  128,  128,  128,  128,  128,  128,  128,  128
    } ;

static yyconst flex_int16_t yy_rule_linenum[63] =
    {   0,
       62,   63,   65,   66,   67,   68,   69,   70,   71,   72,
       73,   74,   75,   76,   77,   80,   81,   82,   83,   88,
       97,   98,   99,  102,  103,  106,  109,  112,  113,  117,
      121,  122,  132,  136,  143,  147,  148,  149,  150,  151,
      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 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
#define YY_NO_INPUT 1

#line 14 "/Users/akim/src/lrde/2/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 664 "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 *,yyconst char *,int );
#endif

#ifdef YY_NEED_STRLEN
static int yy_flex_strlen (yyconst 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 */

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

#ifdef YY_USER_INIT
		YY_USER_INIT;
#endif

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

		if ( ! yyin )
/* %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 48 "/Users/akim/src/lrde/2/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 878 "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 >= 129 )
					yy_c = yy_meta[(unsigned int) yy_c];
				}
			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
			++yy_cp;
			}
		while ( yy_base[yy_current_state] != 274 );

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 < 63 )
				std::cerr << "--accepting rule at line " << yy_rule_linenum[yy_act] <<
				         "(\"" << yytext << "\")\n";
			else if ( yy_act == 63 )
				std::cerr << "--accepting default rule (\"" << yytext << "\")\n";
			else if ( yy_act == 64 )
				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 62 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(LPAREN);
	YY_BREAK
case 2:
YY_RULE_SETUP
#line 63 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(RPAREN);
	YY_BREAK
case 3:
YY_RULE_SETUP
#line 65 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(AMPERSAND);
	YY_BREAK
case 4:
YY_RULE_SETUP
#line 66 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(COLON);
	YY_BREAK
case 5:
YY_RULE_SETUP
#line 67 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(AMPERSAND_COLON);
	YY_BREAK
case 6:
YY_RULE_SETUP
#line 68 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(PERCENT);
	YY_BREAK
case 7:
YY_RULE_SETUP
#line 69 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(PLUS);
	YY_BREAK
case 8:
YY_RULE_SETUP
#line 70 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(LT_PLUS);
	YY_BREAK
case 9:
YY_RULE_SETUP
#line 71 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(DOT);
	YY_BREAK
case 10:
YY_RULE_SETUP
#line 72 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(BACKSLASH);
	YY_BREAK
case 11:
YY_RULE_SETUP
#line 73 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(SLASH);
	YY_BREAK
case 12:
YY_RULE_SETUP
#line 74 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(COMMA);
	YY_BREAK
case 13:
YY_RULE_SETUP
#line 75 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(PIPE);
	YY_BREAK
case 14:
YY_RULE_SETUP
#line 76 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(ZERO);
	YY_BREAK
case 15:
YY_RULE_SETUP
#line 77 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(ONE);
	YY_BREAK
/* Quantifiers.  */
case 16:
YY_RULE_SETUP
#line 80 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_STAR(std::make_tuple(0, 1), loc);
	YY_BREAK
case 17:
YY_RULE_SETUP
#line 81 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_STAR(std::make_tuple(-1, -1), loc);
	YY_BREAK
case 18:
YY_RULE_SETUP
#line 82 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_STAR(std::make_tuple(1, -1), loc);
	YY_BREAK
case 19:
YY_RULE_SETUP
#line 83 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    return parser::make_STAR(quantifier(driver_, loc,
                                        {yytext+1, static_cast<size_t>(yyleng)-2}),
                             loc);
  }
	YY_BREAK
case 20:
YY_RULE_SETUP
#line 88 "/Users/akim/src/lrde/2/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 21:
YY_RULE_SETUP
#line 97 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(BANG);
	YY_BREAK
case 22:
YY_RULE_SETUP
#line 98 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(COMPLEMENT);
	YY_BREAK
case 23:
YY_RULE_SETUP
#line 99 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return TOK(TRANSPOSITION);
	YY_BREAK
/* Special constructs.  */
case 24:
YY_RULE_SETUP
#line 102 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
context.clear(); yy_push_state(SC_CONTEXT);
	YY_BREAK
case 25:
/* rule 25 can match eol */
YY_RULE_SETUP
#line 103 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
continue;
	YY_BREAK
/* Weights. */
case 26:
YY_RULE_SETUP
#line 106 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
yy_push_state(SC_WEIGHT);
	YY_BREAK
/* Character classes.  */
case 27:
YY_RULE_SETUP
#line 109 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
yy_push_state(SC_CLASS); return parser::make_LBRACKET(loc);
	YY_BREAK
/* White spaces. */
case 28:
YY_RULE_SETUP
#line 112 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
loc.step(); continue;
	YY_BREAK
case 29:
/* rule 29 can match eol */
YY_RULE_SETUP
#line 113 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
LINE(yyleng); loc.step(); continue;
	YY_BREAK

/* Character-class.  Initial [ is eaten. */
case 30:
YY_RULE_SETUP
#line 117 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    yy_pop_state();
    return parser::make_RBRACKET(loc);
  }
	YY_BREAK
case 31:
YY_RULE_SETUP
#line 121 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_CARET(loc);
	YY_BREAK
case 32:
YY_RULE_SETUP
#line 122 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_DASH(loc);
	YY_BREAK
case YY_STATE_EOF(SC_CLASS):
#line 124 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    driver_.error(loc, "unexpected end of file in a character-class");
    unput(']');
  }
	YY_BREAK

/* Labels.  */
case 33:
/* rule 33 can match eol */
YY_RULE_SETUP
#line 132 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    return parser::make_LETTER({yytext+1, size_t(yyleng-2)}, loc);
  }
	YY_BREAK
case 34:
YY_RULE_SETUP
#line 136 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    long c = strtol(yytext + 1, 0, 8);
    if (255 < c)
      driver_.error(loc, "invalid escape: " + str_escape(yytext));
    return parser::make_LETTER({char(c)}, loc);
  }
	YY_BREAK
case 35:
YY_RULE_SETUP
#line 143 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    return parser::make_LETTER({char(strtol(yytext + 2, 0, 16))}, loc);
  }
	YY_BREAK
case 36:
YY_RULE_SETUP
#line 147 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_LETTER({'\a'}, loc);
	YY_BREAK
case 37:
YY_RULE_SETUP
#line 148 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_LETTER({'\b'}, loc);
	YY_BREAK
case 38:
YY_RULE_SETUP
#line 149 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_LETTER({'\f'}, loc);
	YY_BREAK
case 39:
YY_RULE_SETUP
#line 150 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_LETTER({'\n'}, loc);
	YY_BREAK
case 40:
YY_RULE_SETUP
#line 151 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_LETTER({'\r'}, loc);
	YY_BREAK
case 41:
YY_RULE_SETUP
#line 152 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_LETTER({'\t'}, loc);
	YY_BREAK
case 42:
YY_RULE_SETUP
#line 153 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_LETTER({'\v'}, loc);
	YY_BREAK
case 43:
YY_RULE_SETUP
#line 154 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_LETTER(yytext+1, loc+1);
	YY_BREAK
case 44:
YY_RULE_SETUP
#line 155 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
return parser::make_LETTER(yytext, loc);
	YY_BREAK

/* Context embedded in a $(?@...) directive.  */
case 45:
YY_RULE_SETUP
#line 160 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    ++nesting;
    context.append(yytext, yyleng);
  }
	YY_BREAK
case 46:
YY_RULE_SETUP
#line 164 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    if (nesting)
      {
        --nesting;
        context.append(yytext, yyleng);
      }
    else
      {
        yy_pop_state();
        driver_.context(context);
        context.clear();
      }
  }
	YY_BREAK
case 47:
YY_RULE_SETUP
#line 177 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
context.append(yytext, yyleng);
	YY_BREAK
case 48:
/* rule 48 can match eol */
YY_RULE_SETUP
#line 178 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
LINE(yyleng); context.append(yytext, yyleng);
	YY_BREAK
case YY_STATE_EOF(SC_CONTEXT):
#line 180 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    driver_.error(loc, "unexpected end of file in a context comment");
    unput(')');
  }
	YY_BREAK

/* UTF-8 Exponent */
case 49:
YY_RULE_SETUP
#line 187 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
exponent *= 10;
	YY_BREAK
case 50:
YY_RULE_SETUP
#line 188 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 1;
	YY_BREAK
case 51:
YY_RULE_SETUP
#line 189 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 2;
	YY_BREAK
case 52:
YY_RULE_SETUP
#line 190 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 3;
	YY_BREAK
case 53:
YY_RULE_SETUP
#line 191 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 4;
	YY_BREAK
case 54:
YY_RULE_SETUP
#line 192 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 5;
	YY_BREAK
case 55:
YY_RULE_SETUP
#line 193 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 6;
	YY_BREAK
case 56:
YY_RULE_SETUP
#line 194 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 7;
	YY_BREAK
case 57:
YY_RULE_SETUP
#line 195 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 8;
	YY_BREAK
case 58:
YY_RULE_SETUP
#line 196 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
exponent *= 10; exponent += 9;
	YY_BREAK
case 59:
/* rule 59 can match eol */
YY_RULE_SETUP
#line 197 "/Users/akim/src/lrde/2/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 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    yy_pop_state();
    return parser::make_STAR(std::make_tuple(exponent, exponent), loc);
  }
	YY_BREAK

/* Weight.  */
case 60:
YY_RULE_SETUP
#line 211 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    ++nesting;
    s.append(yytext, yyleng);
  }
	YY_BREAK
case 61:
YY_RULE_SETUP
#line 216 "/Users/akim/src/lrde/2/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 62:
/* rule 62 can match eol */
YY_RULE_SETUP
#line 230 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
s.append(yytext, yyleng);
	YY_BREAK
case YY_STATE_EOF(SC_WEIGHT):
#line 232 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
{
    driver_.error(loc, "unexpected end of file in a weight");
    unput('>');
  }
	YY_BREAK

case 63:
YY_RULE_SETUP
#line 238 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"
ECHO;
	YY_BREAK
#line 1381 "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( FLEX_STD istream* arg_yyin, FLEX_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 = 0;
	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);
	yy_size_t 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 = (yy_size_t) ((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
		{
			yy_size_t 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 )
				{
				yy_size_t 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,b->yy_buf_size + 2  );
				}
			else
				/* Can't grow it, we don't own it. */
				b->yy_ch_buf = 0;

			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_size_t) ((yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
		/* Extend the array by 50%, plus the number we really need. */
		yy_size_t 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,new_size  );
		if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
			YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
	}

	(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 >= 129 )
				yy_c = yy_meta[(unsigned int) yy_c];
			}
		yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) 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 >= 129 )
			yy_c = yy_meta[(unsigned int) yy_c];
		}
	yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
	yy_is_jam = (yy_current_state == 128);

		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. */
		yy_size_t 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) = 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 */
			yy_size_t offset = (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 EOF;

					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 */

/** 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 .
 */
/* %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 */
/** Delegate to the new version that takes an istream reference.
 * @param input_file A readable stream.
 * 
 * @note This function does not reset the start condition to @c INITIAL .
 */
void yyFlexLexer::yyrestart( std::istream* input_file )
{
	yyrestart( *input_file );
}
/* %endif */

/** Switch to a different input buffer.
 * @param new_buffer The new input buffer.
 * 
 */
/* %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);
}

/** 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 YY_BUF_SIZE.
 * 
 * @return the allocated buffer state.
 */
/* %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 = (yy_size_t)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(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 */
/** Delegate creation of buffers to the new version that takes an istream reference.
 * @param file A readable stream.
 * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
 * 
 * @return the allocated buffer state.
 */
	YY_BUFFER_STATE yyFlexLexer::yy_create_buffer( std::istream* file, int size )
{
	return yy_create_buffer( *file, size );
}
/* %endif */

/** Destroy the buffer.
 * @param b a buffer created with yy_create_buffer()
 * 
 */
/* %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;
}

/** Discard all buffered characters. On the next scan, YY_INPUT will be called.
 * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
 * 
 */
/* %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++ */
/** 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.
 *  
 */
/* %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++ */
/** Removes and deletes the top of the stack, if present.
 *  The next element becomes the new top.
 *  
 */
/* %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_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( yyconst 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, yyconst 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 (yyconst char * s )
{
	int n;
	for ( n = 0; s[n]; ++n )
		;

	return n;
}
#endif

void *yyalloc (yy_size_t  size )
{
			return (void *) 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 (void *) realloc( (char *) 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 "/Users/akim/src/lrde/2/lib/vcsn/rat/scan.ll"


namespace
{
  /// Safe conversion to a numeric value.
  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;
      }
  }

  /// The value of s, a decimal number, or -1 if empty.
  int arity(driver& d, const location& loc, const std::string& s)
  {
    if (s.empty())
      return -1;
    else
      return lexical_cast<int>(d, loc, s);
  }

  /// Decode a quantifier's value: "1,2" etc.
  ///
  /// We used to include the braces in \a, but a libc++ bug in
  /// regex made the following regex unportable.
  /// http://llvm.org/bugs/show_bug.cgi?id=16135
  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:

