scan.c

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#line 3 "lex.aag.c"

#define  YY_INT_ALIGNED short int

/* A lexical scanner generated by flex */

#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION 2
#define YY_FLEX_MINOR_VERSION 5
#define YY_FLEX_SUBMINOR_VERSION 37
#if YY_FLEX_SUBMINOR_VERSION > 0
#define FLEX_BETA
#endif

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

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

/* end standard C headers. */

/* flex integer type definitions */

#ifndef FLEXINT_H
#define FLEXINT_H

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

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

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

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

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

#endif /* ! C99 */

#endif /* ! FLEXINT_H */

#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 aagconst const
#else
#define aagconst
#endif

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

/* Promotes a possibly negative, possibly signed char to an unsigned
 * integer for use as an array index.  If the signed char is negative,
 * we want to instead treat it as an 8-bit unsigned char, hence the
 * double cast.
 */
#define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)

/* Enter a start condition.  This macro really ought to take a parameter,
 * but we do it the disgusting crufty way forced on us by the ()-less
 * definition of BEGIN.
 */
#define BEGIN (aag_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 (((aag_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 aagrestart(aagin  )

#define YY_END_OF_BUFFER_CHAR 0

/* Size of default input buffer. */
#ifndef YY_BUF_SIZE
#define YY_BUF_SIZE 16384
#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(aag_state_type))

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

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

extern aag_size_t aagleng;

extern FILE *aagin, *aagout;

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

    #define YY_LESS_LINENO(n)
    
/* Return all but the first "n" matched characters back to the input stream. */
#define aagless(n) \
        do \
                { \
                /* Undo effects of setting up aagtext. */ \
        int aagless_macro_arg = (n); \
        YY_LESS_LINENO(aagless_macro_arg);\
                *aag_cp = (aag_hold_char); \
                YY_RESTORE_YY_MORE_OFFSET \
                (aag_c_buf_p) = aag_cp = aag_bp + aagless_macro_arg - YY_MORE_ADJ; \
                YY_DO_BEFORE_ACTION; /* set up aagtext again */ \
                } \
        while ( 0 )

#define unput(c) aagunput( c, (aagtext_ptr)  )

#ifndef YY_STRUCT_YY_BUFFER_STATE
#define YY_STRUCT_YY_BUFFER_STATE
struct aag_buffer_state
        {
        FILE *aag_input_file;

        char *aag_ch_buf;               /* input buffer */
        char *aag_buf_pos;              /* current position in input buffer */

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

        /* Number of characters read into aag_ch_buf, not including EOB
         * characters.
         */
        aag_size_t aag_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 aag_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 aag_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 aag_at_bol;

    int aag_bs_lineno; 
    int aag_bs_column; 
        /* Whether to try to fill the input buffer when we reach the
         * end of it.
         */
        int aag_fill_buffer;

        int aag_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 aagrestart()), so that the user can continue scanning by
         * just pointing aagin at a new input file.
         */
#define YY_BUFFER_EOF_PENDING 2

        };
#endif /* !YY_STRUCT_YY_BUFFER_STATE */

/* Stack of input buffers. */
static size_t aag_buffer_stack_top = 0; 
static size_t aag_buffer_stack_max = 0; 
static YY_BUFFER_STATE * aag_buffer_stack = 0; 
/* We provide macros for accessing buffer states in case in the
 * future we want to put the buffer states in a more general
 * "scanner state".
 *
 * Returns the top of the stack, or NULL.
 */
#define YY_CURRENT_BUFFER ( (aag_buffer_stack) \
                          ? (aag_buffer_stack)[(aag_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 (aag_buffer_stack)[(aag_buffer_stack_top)]

/* aag_hold_char holds the character lost when aagtext is formed. */
static char aag_hold_char;
static aag_size_t aag_n_chars;          /* number of characters read into aag_ch_buf */
aag_size_t aagleng;

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

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

void aagrestart (FILE *input_file  );
void aag_switch_to_buffer (YY_BUFFER_STATE new_buffer  );
YY_BUFFER_STATE aag_create_buffer (FILE *file,int size  );
void aag_delete_buffer (YY_BUFFER_STATE b  );
void aag_flush_buffer (YY_BUFFER_STATE b  );
void aagpush_buffer_state (YY_BUFFER_STATE new_buffer  );
void aagpop_buffer_state (void );

static void aagensure_buffer_stack (void );
static void aag_load_buffer_state (void );
static void aag_init_buffer (YY_BUFFER_STATE b,FILE *file  );

#define YY_FLUSH_BUFFER aag_flush_buffer(YY_CURRENT_BUFFER )

YY_BUFFER_STATE aag_scan_buffer (char *base,aag_size_t size  );
YY_BUFFER_STATE aag_scan_string (aagconst char *aag_str  );
YY_BUFFER_STATE aag_scan_bytes (aagconst char *bytes,aag_size_t len  );

void *aagalloc (aag_size_t  );
void *aagrealloc (void *,aag_size_t  );
void aagfree (void *  );

#define aag_new_buffer aag_create_buffer

#define aag_set_interactive(is_interactive) \
        { \
        if ( ! YY_CURRENT_BUFFER ){ \
        aagensure_buffer_stack (); \
                YY_CURRENT_BUFFER_LVALUE =    \
            aag_create_buffer(aagin,YY_BUF_SIZE ); \
        } \
        YY_CURRENT_BUFFER_LVALUE->aag_is_interactive = is_interactive; \
        }

#define aag_set_bol(at_bol) \
        { \
        if ( ! YY_CURRENT_BUFFER ){\
        aagensure_buffer_stack (); \
                YY_CURRENT_BUFFER_LVALUE =    \
            aag_create_buffer(aagin,YY_BUF_SIZE ); \
        } \
        YY_CURRENT_BUFFER_LVALUE->aag_at_bol = at_bol; \
        }

#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->aag_at_bol)

/* Begin user sect3 */

typedef unsigned char YY_CHAR;

FILE *aagin = (FILE *) 0, *aagout = (FILE *) 0;

typedef int aag_state_type;

extern int aaglineno;

int aaglineno = 1;

extern char *aagtext;
#define aagtext_ptr aagtext

static aag_state_type aag_get_previous_state (void );
static aag_state_type aag_try_NUL_trans (aag_state_type current_state  );
static int aag_get_next_buffer (void );
static void aag_fatal_error (aagconst char msg[]  );

/* Done after the current pattern has been matched and before the
 * corresponding action - sets up aagtext.
 */
#define YY_DO_BEFORE_ACTION \
        (aagtext_ptr) = aag_bp; \
        aagleng = (size_t) (aag_cp - aag_bp); \
        (aag_hold_char) = *aag_cp; \
        *aag_cp = '\0'; \
        (aag_c_buf_p) = aag_cp;

#define YY_NUM_RULES 34
#define YY_END_OF_BUFFER 35
/* This struct is not used in this scanner,
   but its presence is necessary. */
struct aag_trans_info
        {
        flex_int32_t aag_verify;
        flex_int32_t aag_nxt;
        };
static aagconst flex_int16_t aag_accept[93] =
    {   0,
        0,    0,    4,    4,   27,   27,   32,   32,   35,   33,
       10,    2,   22,    9,   33,   33,   33,   21,   28,    1,
       20,   20,   20,   20,   20,   20,   20,    8,    4,    5,
       27,    2,   23,   27,   32,   31,   30,   29,    9,   19,
        0,   21,   18,   21,    3,    7,   21,   21,   20,   20,
       20,   20,   20,   20,   20,   20,    8,    4,    5,    5,
        6,   27,   26,   24,   25,   32,    7,   21,   20,   20,
       20,   20,   20,   20,   11,   20,   13,   20,   12,   20,
       20,   20,   14,   20,   20,   20,   16,   20,   15,   20,
       17,    0

    } ;

static aagconst flex_int32_t aag_ec[256] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
        1,    1,    2,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    2,    1,    4,    5,    1,    1,    1,    1,    1,
        1,    6,    1,    1,    7,    8,    9,   10,   10,   10,
       10,   10,   10,   10,   10,   10,   10,    1,    1,   11,
        1,   12,    1,   13,   14,   15,   16,   17,   18,   19,
       20,   21,   22,   19,   19,   19,   19,   23,   24,   25,
       19,   26,   27,   28,   29,   19,   19,   19,   19,   19,
        1,   30,    1,    1,   19,    1,   31,   32,   33,   34,

       35,   19,   36,   37,   38,   19,   19,   19,   19,   39,
       40,   41,   19,   42,   43,   44,   45,   19,   19,   19,
       19,   19,    1,    1,    1,    1,    1,   19,   19,   19,
       19,   19,   19,   19,   19,   19,   19,   19,   19,   19,
       19,   19,   19,   19,   19,   19,   19,   19,   19,   19,
       19,   19,   19,   19,   19,   19,   19,   19,   19,   19,
       19,   19,   19,   19,   19,   19,   19,   19,   19,   19,
       19,   19,   19,   19,   19,   19,   19,   19,   19,   19,
       19,   19,   19,   19,   19,   19,   46,   19,   19,   19,
       47,   19,   19,   19,   19,   19,   19,   19,   19,   19,

       19,   19,   19,   19,   19,   19,   19,   19,   19,   19,
       19,   19,   19,   19,   19,   19,   19,   19,   19,   19,
       19,   19,   19,   19,   19,   19,   19,   19,   19,   19,
       19,   19,   19,   19,   19,   19,   19,   19,   48,   19,
       19,   19,   19,   19,   19,   19,   19,   19,   19,   19,
       19,   19,   19,   19,   19
    } ;

static aagconst flex_int32_t aag_meta[49] =
    {   0,
        1,    1,    2,    3,    1,    4,    1,    5,    1,    6,
        7,    7,    1,    6,    6,    6,    6,    6,    6,    6,
        6,    6,    6,    6,    6,    6,    6,    6,    6,    3,
        6,    6,    6,    6,    6,    6,    6,    6,    6,    6,
        6,    6,    6,    6,    6,    6,    6,    6
    } ;

static aagconst flex_int16_t aag_base[105] =
    {   0,
        0,  174,   46,   47,   51,   53,   48,   55,  170,  219,
      219,  219,  219,    0,   61,  135,   55,   55,  219,  219,
        0,   40,   53,   46,   50,   47,   98,    0,    0,   71,
        0,    0,  219,   81,    0,  219,  219,  219,    0,  219,
      132,   85,  219,  130,  219,    0,  129,  219,    0,   62,
       66,   65,   72,   68,   82,   91,    0,    0,   94,   95,
      219,    0,  219,  219,  219,    0,    0,  123,   73,   87,
       82,   90,   90,   93,    0,   95,    0,   95,    0,  101,
       93,   95,    0,   93,  110,  106,    0,  105,    0,  110,
        0,  219,  147,  154,  161,  168,  171,  112,  177,  184,

      191,  198,  205,  211
    } ;

static aagconst flex_int16_t aag_def[105] =
    {   0,
       92,    1,   93,   93,   94,   94,   95,   95,   92,   92,
       92,   92,   92,   96,   92,   92,   92,   97,   92,   92,
       98,   98,   98,   98,   98,   98,   98,   99,  100,  101,
      102,  102,   92,   92,  103,   92,   92,   92,   96,   92,
       92,   97,   92,   97,   92,  104,   97,   92,   98,   98,
       98,   98,   98,   98,   98,   98,   99,  100,  101,  101,
       92,  102,   92,   92,   92,  103,  104,   97,   98,   98,
       98,   98,   98,   98,   98,   98,   98,   98,   98,   98,
       98,   98,   98,   98,   98,   98,   98,   98,   98,   98,
       98,    0,   92,   92,   92,   92,   92,   92,   92,   92,

       92,   92,   92,   92
    } ;

static aagconst flex_int16_t aag_nxt[268] =
    {   0,
       10,   11,   12,   13,   14,   10,   15,   16,   17,   18,
       19,   10,   20,   21,   21,   21,   22,   23,   21,   24,
       21,   21,   25,   21,   21,   21,   26,   21,   21,   10,
       21,   21,   21,   22,   23,   24,   21,   21,   25,   21,
       21,   21,   26,   21,   21,   21,   21,   27,   12,   12,
       36,   30,   30,   32,   33,   32,   33,   36,   37,   38,
       45,   50,   47,   46,   42,   37,   38,   40,   41,   51,
       42,   52,   43,   53,   54,   55,   60,   50,   71,   61,
       34,   69,   34,   63,   64,   70,   51,   52,   72,   53,
       54,   55,   47,   73,   42,   71,   74,   69,   76,   92,

       60,   70,   92,   61,   77,   72,   78,   79,   82,   73,
       65,   80,   81,   74,   76,   83,   84,   49,   85,   86,
       87,   77,   78,   88,   79,   82,   89,   80,   81,   90,
       91,   83,   68,   84,   85,   86,   87,   75,   68,   44,
       88,   44,   89,   56,   44,   90,   91,   29,   29,   29,
       29,   29,   29,   29,   31,   31,   31,   31,   31,   31,
       31,   35,   35,   35,   35,   35,   35,   35,   39,   92,
       39,   39,   39,   39,   39,   48,   48,   57,   28,   57,
       57,   57,   57,   57,   58,   92,   58,   92,   58,   58,
       58,   59,   92,   59,   59,   59,   59,   59,   62,   62,

       92,   62,   62,   62,   62,   66,   92,   66,   66,   66,
       66,   67,   92,   67,   67,   67,   67,   67,    9,   92,
       92,   92,   92,   92,   92,   92,   92,   92,   92,   92,
       92,   92,   92,   92,   92,   92,   92,   92,   92,   92,
       92,   92,   92,   92,   92,   92,   92,   92,   92,   92,
       92,   92,   92,   92,   92,   92,   92,   92,   92,   92,
       92,   92,   92,   92,   92,   92,   92
    } ;

static aagconst flex_int16_t aag_chk[268] =
    {   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,    3,    4,
        7,    3,    4,    5,    5,    6,    6,    8,    7,    7,
       17,   22,   18,   17,   18,    8,    8,   15,   15,   23,
       15,   24,   15,   25,   26,   26,   30,   22,   52,   30,
        5,   50,    6,   34,   34,   51,   23,   24,   53,   25,
       26,   26,   42,   54,   42,   52,   55,   50,   69,   59,

       60,   51,   59,   60,   70,   53,   71,   72,   76,   54,
       34,   73,   74,   55,   69,   78,   80,   98,   81,   82,
       84,   70,   71,   85,   72,   76,   86,   73,   74,   88,
       90,   78,   68,   80,   81,   82,   84,   56,   47,   44,
       85,   41,   86,   27,   16,   88,   90,   93,   93,   93,
       93,   93,   93,   93,   94,   94,   94,   94,   94,   94,
       94,   95,   95,   95,   95,   95,   95,   95,   96,    9,
       96,   96,   96,   96,   96,   97,   97,   99,    2,   99,
       99,   99,   99,   99,  100,    0,  100,    0,  100,  100,
      100,  101,    0,  101,  101,  101,  101,  101,  102,  102,

        0,  102,  102,  102,  102,  103,    0,  103,  103,  103,
      103,  104,    0,  104,  104,  104,  104,  104,   92,   92,
       92,   92,   92,   92,   92,   92,   92,   92,   92,   92,
       92,   92,   92,   92,   92,   92,   92,   92,   92,   92,
       92,   92,   92,   92,   92,   92,   92,   92,   92,   92,
       92,   92,   92,   92,   92,   92,   92,   92,   92,   92,
       92,   92,   92,   92,   92,   92,   92
    } ;

static aag_state_type aag_last_accepting_state;
static char *aag_last_accepting_cpos;

extern int aag_flex_debug;
int aag_flex_debug = 0;

/* The intent behind this definition is that it'll catch
 * any uses of REJECT which flex missed.
 */
#define REJECT reject_used_but_not_detected
#define aagmore() aagmore_used_but_not_detected
#define YY_MORE_ADJ 0
#define YY_RESTORE_YY_MORE_OFFSET
char *aagtext;
#line 1 "../../lib/cgraph/scan.l"
/* $Id$ $Revision$ */
/* vim:set shiftwidth=4 ts=8: */
/*************************************************************************
 * Copyright (c) 2011 AT&T Intellectual Property 
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors: See CVS logs. Details at http://www.graphviz.org/
 *************************************************************************/
/* requires flex (i.e. not lex)  */
#line 17 "../../lib/cgraph/scan.l"
#include <grammar.h>
#include <cghdr.h>
#include <agxbuf.h>
#include <ctype.h>
// #define YY_BUF_SIZE 128000
#define GRAPH_EOF_TOKEN         '@'             /* lex class must be defined below */
        /* this is a workaround for linux flex */
static int line_num = 1;
static int html_nest = 0;  /* nesting level for html strings */
static char* InputFile;
static Agdisc_t *Disc;
static void     *Ifile;
static int graphType;

  /* Reset line number */
void agreadline(int n) { line_num = n; }

  /* (Re)set file:
   */
void agsetfile(char* f) { InputFile = f; line_num = 1; }

/* There is a hole here, because switching channels 
 * requires pushing back whatever was previously read.
 * There probably is a right way of doing this.
 */
void aglexinit(Agdisc_t *disc, void *ifile) { Disc = disc; Ifile = ifile; graphType = 0;}

#define isatty(x) 0
#ifndef YY_INPUT
#define YY_INPUT(buf,result,max_size) \
        if ((result = Disc->io->afread(Ifile, buf, max_size)) < 0) \
                YY_FATAL_ERROR( "input in flex scanner failed" )
#endif

/* buffer for arbitrary length strings (longer than BUFSIZ) */
static char     *Sbuf,*Sptr,*Send;
static void beginstr(void) {
        if (Sbuf == NIL(char*)) {
                Sbuf = malloc(BUFSIZ);
                Send = Sbuf + BUFSIZ;
        }
        Sptr = Sbuf;
        *Sptr = 0;
}

static void addstr(char *src) {
        char    c;
        if (Sptr > Sbuf) Sptr--;
        do {
                do {c = *Sptr++ = *src++;} while (c && (Sptr < Send));
                if (c) {
                        long    sz = Send - Sbuf;
                        long    off = Sptr - Sbuf;
                        sz *= 2;
                        Sbuf = (char*)realloc(Sbuf,sz);
                        Send = Sbuf + sz;
                        Sptr = Sbuf + off;
                }
        } while (c);
}

static void endstr(void) {
        aaglval.str = (char*)agstrdup(Ag_G_global,Sbuf);
        *Sbuf = 0;
}

static void endstr_html(void) {
        aaglval.str = (char*)agstrdup_html(Ag_G_global,Sbuf);
        *Sbuf = 0;
}

static void
storeFileName (char* fname, int len)
{
    static int cnt;
    static char* buf;

    if (len > cnt) {
        if (cnt) buf = (char*)realloc (buf, len+1);
        else buf = (char*)malloc (len+1);
        cnt = len;
    }
    strcpy (buf, fname);
    InputFile = buf;
}

/* ppDirective:
 * Process a possible preprocessor line directive.
 * aagtext = #.*
 */
static void ppDirective (void)
{
    int r, cnt, lineno;
    char buf[2];
    char* s = aagtext + 1;  /* skip initial # */

    if (strncmp(s, "line", 4) == 0) s += 4;
    r = sscanf(s, "%d %1[\"]%n", &lineno, buf, &cnt);
    if (r > 0) { /* got line number */ 
        line_num = lineno - 1;
        if (r > 1) { /* saw quote */
            char* p = s + cnt;
            char* e = p;
            while (*e && (*e != '"')) e++; 
            if (e != p && *e == '"') {
                *e = '\0';
                storeFileName (p, e-p);
            }
        }
    }
}

/* twoDots:
 * Return true if token has more than one '.';
 * we know the last character is a '.'.
 */
static int twoDots(void)
{
    int i;
    for (i = aagleng-2; i >= 0; i--) {
        if (((unsigned char)aagtext[i]) == '.')
            return 1;
    }
    return 0;
}

/* chkNum:
 * The regexp for NUMBER allows a terminating letter or '.'.
 * This way we can catch a number immediately followed by a name
 * or something like 123.456.78, and report this to the user.
 */
static int chkNum(void) {
    unsigned char c = (unsigned char)aagtext[aagleng-1];   /* last character */
    if ((!isdigit(c) && (c != '.')) || ((c == '.') && twoDots())) {  /* c is letter */
        unsigned char xbuf[BUFSIZ];
        char buf[BUFSIZ];
        agxbuf  xb;
        char* fname;

        if (InputFile)
            fname = InputFile;
        else
            fname = "input";

        agxbinit(&xb, BUFSIZ, xbuf);

        agxbput(&xb,"syntax ambiguity - badly delimited number '");
        agxbput(&xb,aagtext);
        sprintf(buf,"' in line %d of ", line_num);
        agxbput(&xb,buf);
        agxbput(&xb,fname);
        agxbput(&xb, " splits into two tokens\n");
        agerr(AGWARN, "%s", agxbuse(&xb));

        agxbfree(&xb);
        return 1;
    }
    else return 0;
}

/* The LETTER class below consists of ascii letters, underscore, all non-ascii
 * characters. This allows identifiers to have characters from any
 * character set independent of locale. The downside is that, for certain
 * character sets, non-letter and, in fact, undefined characters will be
 * accepted. This is not likely and, from dot's stand, shouldn't do any
 * harm. (Presumably undefined characters will be ignored in display.) And,
 * it allows a greater wealth of names. */



#line 725 "lex.aag.c"

#define INITIAL 0
#define comment 1
#define qstring 2
#define hstring 3

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

#ifndef YY_EXTRA_TYPE
#define YY_EXTRA_TYPE void *
#endif

static int aag_init_globals (void );

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

int aaglex_destroy (void );

int aagget_debug (void );

void aagset_debug (int debug_flag  );

YY_EXTRA_TYPE aagget_extra (void );

void aagset_extra (YY_EXTRA_TYPE user_defined  );

FILE *aagget_in (void );

void aagset_in  (FILE * in_str  );

FILE *aagget_out (void );

void aagset_out  (FILE * out_str  );

aag_size_t aagget_leng (void );

char *aagget_text (void );

int aagget_lineno (void );

void aagset_lineno (int line_number  );

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

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

    static void aagunput (int c,char *buf_ptr  );
    
#ifndef aagtext_ptr
static void aag_flex_strncpy (char *,aagconst char *,int );
#endif

#ifdef YY_NEED_STRLEN
static int aag_flex_strlen (aagconst char * );
#endif

#ifndef YY_NO_INPUT

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

#endif

/* Amount of stuff to slurp up with each read. */
#ifndef YY_READ_BUF_SIZE
#define YY_READ_BUF_SIZE 8192
#endif

/* Copy whatever the last rule matched to the standard output. */
#ifndef ECHO
/* This used to be an fputs(), but since the string might contain NUL's,
 * we now use fwrite().
 */
#define ECHO do { if (fwrite( aagtext, aagleng, 1, aagout )) {} } while (0)
#endif

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

#endif

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

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

/* Report a fatal error. */
#ifndef YY_FATAL_ERROR
#define YY_FATAL_ERROR(msg) aag_fatal_error( msg )
#endif

/* end tables serialization structures and prototypes */

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

extern int aaglex (void);

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

/* Code executed at the beginning of each rule, after aagtext and aagleng
 * 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 break;
#endif

#define YY_RULE_SETUP \
        if ( aagleng > 0 ) \
                YY_CURRENT_BUFFER_LVALUE->aag_at_bol = \
                                (aagtext[aagleng - 1] == '\n'); \
        YY_USER_ACTION

YY_DECL
{
        register aag_state_type aag_current_state;
        register char *aag_cp, *aag_bp;
        register int aag_act;
    
#line 194 "../../lib/cgraph/scan.l"

#line 915 "lex.aag.c"

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

#ifdef YY_USER_INIT
                YY_USER_INIT;
#endif

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

                if ( ! aagin )
                        aagin = stdin;

                if ( ! aagout )
                        aagout = stdout;

                if ( ! YY_CURRENT_BUFFER ) {
                        aagensure_buffer_stack ();
                        YY_CURRENT_BUFFER_LVALUE =
                                aag_create_buffer(aagin,YY_BUF_SIZE );
                }

                aag_load_buffer_state( );
                }

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

                /* Support of aagtext. */
                *aag_cp = (aag_hold_char);

                /* aag_bp points to the position in aag_ch_buf of the start of
                 * the current run.
                 */
                aag_bp = aag_cp;

                aag_current_state = (aag_start);
                aag_current_state += YY_AT_BOL();
aag_match:
                do
                        {
                        register YY_CHAR aag_c = aag_ec[YY_SC_TO_UI(*aag_cp)];
                        if ( aag_accept[aag_current_state] )
                                {
                                (aag_last_accepting_state) = aag_current_state;
                                (aag_last_accepting_cpos) = aag_cp;
                                }
                        while ( aag_chk[aag_base[aag_current_state] + aag_c] != aag_current_state )
                                {
                                aag_current_state = (int) aag_def[aag_current_state];
                                if ( aag_current_state >= 93 )
                                        aag_c = aag_meta[(unsigned int) aag_c];
                                }
                        aag_current_state = aag_nxt[aag_base[aag_current_state] + (unsigned int) aag_c];
                        ++aag_cp;
                        }
                while ( aag_base[aag_current_state] != 219 );

aag_find_action:
                aag_act = aag_accept[aag_current_state];
                if ( aag_act == 0 )
                        { /* have to back up */
                        aag_cp = (aag_last_accepting_cpos);
                        aag_current_state = (aag_last_accepting_state);
                        aag_act = aag_accept[aag_current_state];
                        }

                YY_DO_BEFORE_ACTION;

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

                switch ( aag_act )
        { /* beginning of action switch */
                        case 0: /* must back up */
                        /* undo the effects of YY_DO_BEFORE_ACTION */
                        *aag_cp = (aag_hold_char);
                        aag_cp = (aag_last_accepting_cpos);
                        aag_current_state = (aag_last_accepting_state);
                        goto aag_find_action;

case 1:
YY_RULE_SETUP
#line 195 "../../lib/cgraph/scan.l"
return(EOF);
        YY_BREAK
case 2:
/* rule 2 can match eol */
YY_RULE_SETUP
#line 196 "../../lib/cgraph/scan.l"
line_num++;
        YY_BREAK
case 3:
YY_RULE_SETUP
#line 197 "../../lib/cgraph/scan.l"
BEGIN(comment);
        YY_BREAK
case 4:
YY_RULE_SETUP
#line 198 "../../lib/cgraph/scan.l"
/* eat anything not a '*' */
        YY_BREAK
case 5:
YY_RULE_SETUP
#line 199 "../../lib/cgraph/scan.l"
/* eat up '*'s not followed by '/'s */
        YY_BREAK
case 6:
YY_RULE_SETUP
#line 200 "../../lib/cgraph/scan.l"
BEGIN(INITIAL);
        YY_BREAK
case 7:
YY_RULE_SETUP
#line 201 "../../lib/cgraph/scan.l"
/* ignore C++-style comments */
        YY_BREAK
case 8:
YY_RULE_SETUP
#line 202 "../../lib/cgraph/scan.l"
ppDirective ();
        YY_BREAK
case 9:
YY_RULE_SETUP
#line 203 "../../lib/cgraph/scan.l"
/* ignore shell-like comments */
        YY_BREAK
case 10:
YY_RULE_SETUP
#line 204 "../../lib/cgraph/scan.l"
/* ignore whitespace */
        YY_BREAK
case 11:
YY_RULE_SETUP
#line 205 "../../lib/cgraph/scan.l"
/* ignore BOM */
        YY_BREAK
case 12:
YY_RULE_SETUP
#line 206 "../../lib/cgraph/scan.l"
return(T_node);                 /* see tokens in agcanonstr */
        YY_BREAK
case 13:
YY_RULE_SETUP
#line 207 "../../lib/cgraph/scan.l"
return(T_edge);
        YY_BREAK
case 14:
YY_RULE_SETUP
#line 208 "../../lib/cgraph/scan.l"
if (!graphType) graphType = T_graph; return(T_graph);
        YY_BREAK
case 15:
YY_RULE_SETUP
#line 209 "../../lib/cgraph/scan.l"
if (!graphType) graphType = T_digraph; return(T_digraph);
        YY_BREAK
case 16:
YY_RULE_SETUP
#line 210 "../../lib/cgraph/scan.l"
return(T_strict);
        YY_BREAK
case 17:
YY_RULE_SETUP
#line 211 "../../lib/cgraph/scan.l"
return(T_subgraph);
        YY_BREAK
case 18:
YY_RULE_SETUP
#line 212 "../../lib/cgraph/scan.l"
if (graphType == T_digraph) return(T_edgeop); else return('-');
        YY_BREAK
case 19:
YY_RULE_SETUP
#line 213 "../../lib/cgraph/scan.l"
if (graphType == T_graph) return(T_edgeop); else return('-');
        YY_BREAK
case 20:
YY_RULE_SETUP
#line 214 "../../lib/cgraph/scan.l"
{ aaglval.str = (char*)agstrdup(Ag_G_global,aagtext); return(T_atom); }
        YY_BREAK
case 21:
YY_RULE_SETUP
#line 215 "../../lib/cgraph/scan.l"
{ if (chkNum()) aagless(aagleng-1); aaglval.str = (char*)agstrdup(Ag_G_global,aagtext); return(T_atom); }
        YY_BREAK
case 22:
YY_RULE_SETUP
#line 216 "../../lib/cgraph/scan.l"
BEGIN(qstring); beginstr();
        YY_BREAK
case 23:
YY_RULE_SETUP
#line 217 "../../lib/cgraph/scan.l"
BEGIN(INITIAL); endstr(); return (T_qatom);
        YY_BREAK
case 24:
YY_RULE_SETUP
#line 218 "../../lib/cgraph/scan.l"
addstr ("\"");
        YY_BREAK
case 25:
YY_RULE_SETUP
#line 219 "../../lib/cgraph/scan.l"
addstr ("\\\\");
        YY_BREAK
case 26:
/* rule 26 can match eol */
YY_RULE_SETUP
#line 220 "../../lib/cgraph/scan.l"
line_num++; /* ignore escaped newlines */
        YY_BREAK
case 27:
/* rule 27 can match eol */
YY_RULE_SETUP
#line 221 "../../lib/cgraph/scan.l"
addstr(aagtext);
        YY_BREAK
case 28:
YY_RULE_SETUP
#line 222 "../../lib/cgraph/scan.l"
BEGIN(hstring); html_nest = 1; beginstr();
        YY_BREAK
case 29:
YY_RULE_SETUP
#line 223 "../../lib/cgraph/scan.l"
html_nest--; if (html_nest) addstr(aagtext); else {BEGIN(INITIAL); endstr_html(); return (T_qatom);}
        YY_BREAK
case 30:
YY_RULE_SETUP
#line 224 "../../lib/cgraph/scan.l"
html_nest++; addstr(aagtext);
        YY_BREAK
case 31:
/* rule 31 can match eol */
YY_RULE_SETUP
#line 225 "../../lib/cgraph/scan.l"
addstr(aagtext); line_num++; /* add newlines */
        YY_BREAK
case 32:
YY_RULE_SETUP
#line 226 "../../lib/cgraph/scan.l"
addstr(aagtext);
        YY_BREAK
case 33:
YY_RULE_SETUP
#line 227 "../../lib/cgraph/scan.l"
return (aagtext[0]);
        YY_BREAK
case 34:
YY_RULE_SETUP
#line 228 "../../lib/cgraph/scan.l"
ECHO;
        YY_BREAK
#line 1173 "lex.aag.c"
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(comment):
case YY_STATE_EOF(qstring):
case YY_STATE_EOF(hstring):
        aagterminate();

        case YY_END_OF_BUFFER:
                {
                /* Amount of text matched not including the EOB char. */
                int aag_amount_of_matched_text = (int) (aag_cp - (aagtext_ptr)) - 1;

                /* Undo the effects of YY_DO_BEFORE_ACTION. */
                *aag_cp = (aag_hold_char);
                YY_RESTORE_YY_MORE_OFFSET

                if ( YY_CURRENT_BUFFER_LVALUE->aag_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 aagin at a new source and called
                         * aaglex().  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.
                         */
                        (aag_n_chars) = YY_CURRENT_BUFFER_LVALUE->aag_n_chars;
                        YY_CURRENT_BUFFER_LVALUE->aag_input_file = aagin;
                        YY_CURRENT_BUFFER_LVALUE->aag_buffer_status = YY_BUFFER_NORMAL;
                        }

                /* Note that here we test for aag_c_buf_p "<=" to the position
                 * of the first EOB in the buffer, since aag_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 ( (aag_c_buf_p) <= &YY_CURRENT_BUFFER_LVALUE->aag_ch_buf[(aag_n_chars)] )
                        { /* This was really a NUL. */
                        aag_state_type aag_next_state;

                        (aag_c_buf_p) = (aagtext_ptr) + aag_amount_of_matched_text;

                        aag_current_state = aag_get_previous_state(  );

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

                        aag_next_state = aag_try_NUL_trans( aag_current_state );

                        aag_bp = (aagtext_ptr) + YY_MORE_ADJ;

                        if ( aag_next_state )
                                {
                                /* Consume the NUL. */
                                aag_cp = ++(aag_c_buf_p);
                                aag_current_state = aag_next_state;
                                goto aag_match;
                                }

                        else
                                {
                                aag_cp = (aag_c_buf_p);
                                goto aag_find_action;
                                }
                        }

                else switch ( aag_get_next_buffer(  ) )
                        {
                        case EOB_ACT_END_OF_FILE:
                                {
                                (aag_did_buffer_switch_on_eof) = 0;

                                if ( aagwrap( ) )
                                        {
                                        /* Note: because we've taken care in
                                         * aag_get_next_buffer() to have set up
                                         * aagtext, we can now set up
                                         * aag_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.
                                         */
                                        (aag_c_buf_p) = (aagtext_ptr) + YY_MORE_ADJ;

                                        aag_act = YY_STATE_EOF(YY_START);
                                        goto do_action;
                                        }

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

                        case EOB_ACT_CONTINUE_SCAN:
                                (aag_c_buf_p) =
                                        (aagtext_ptr) + aag_amount_of_matched_text;

                                aag_current_state = aag_get_previous_state(  );

                                aag_cp = (aag_c_buf_p);
                                aag_bp = (aagtext_ptr) + YY_MORE_ADJ;
                                goto aag_match;

                        case EOB_ACT_LAST_MATCH:
                                (aag_c_buf_p) =
                                &YY_CURRENT_BUFFER_LVALUE->aag_ch_buf[(aag_n_chars)];

                                aag_current_state = aag_get_previous_state(  );

                                aag_cp = (aag_c_buf_p);
                                aag_bp = (aagtext_ptr) + YY_MORE_ADJ;
                                goto aag_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 aaglex */

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

        if ( (aag_c_buf_p) > &YY_CURRENT_BUFFER_LVALUE->aag_ch_buf[(aag_n_chars) + 1] )
                YY_FATAL_ERROR(
                "fatal flex scanner internal error--end of buffer missed" );

        if ( YY_CURRENT_BUFFER_LVALUE->aag_fill_buffer == 0 )
                { /* Don't try to fill the buffer, so this is an EOF. */
                if ( (aag_c_buf_p) - (aagtext_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) ((aag_c_buf_p) - (aagtext_ptr)) - 1;

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

        if ( YY_CURRENT_BUFFER_LVALUE->aag_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->aag_n_chars = (aag_n_chars) = 0;

        else
                {
                        aag_size_t num_to_read =
                        YY_CURRENT_BUFFER_LVALUE->aag_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 aag_c_buf_p_offset =
                                (int) ((aag_c_buf_p) - b->aag_ch_buf);

                        if ( b->aag_is_our_buffer )
                                {
                                aag_size_t new_size = b->aag_buf_size * 2;

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

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

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

                        (aag_c_buf_p) = &b->aag_ch_buf[aag_c_buf_p_offset];

                        num_to_read = YY_CURRENT_BUFFER_LVALUE->aag_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->aag_ch_buf[number_to_move]),
                        (aag_n_chars), num_to_read );

                YY_CURRENT_BUFFER_LVALUE->aag_n_chars = (aag_n_chars);
                }

        if ( (aag_n_chars) == 0 )
                {
                if ( number_to_move == YY_MORE_ADJ )
                        {
                        ret_val = EOB_ACT_END_OF_FILE;
                        aagrestart(aagin  );
                        }

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

        else
                ret_val = EOB_ACT_CONTINUE_SCAN;

        if ((aag_size_t) ((aag_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->aag_buf_size) {
                /* Extend the array by 50%, plus the number we really need. */
                aag_size_t new_size = (aag_n_chars) + number_to_move + ((aag_n_chars) >> 1);
                YY_CURRENT_BUFFER_LVALUE->aag_ch_buf = (char *) aagrealloc((void *) YY_CURRENT_BUFFER_LVALUE->aag_ch_buf,new_size  );
                if ( ! YY_CURRENT_BUFFER_LVALUE->aag_ch_buf )
                        YY_FATAL_ERROR( "out of dynamic memory in aag_get_next_buffer()" );
        }

        (aag_n_chars) += number_to_move;
        YY_CURRENT_BUFFER_LVALUE->aag_ch_buf[(aag_n_chars)] = YY_END_OF_BUFFER_CHAR;
        YY_CURRENT_BUFFER_LVALUE->aag_ch_buf[(aag_n_chars) + 1] = YY_END_OF_BUFFER_CHAR;

        (aagtext_ptr) = &YY_CURRENT_BUFFER_LVALUE->aag_ch_buf[0];

        return ret_val;
}

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

    static aag_state_type aag_get_previous_state (void)
{
        register aag_state_type aag_current_state;
        register char *aag_cp;
    
        aag_current_state = (aag_start);
        aag_current_state += YY_AT_BOL();

        for ( aag_cp = (aagtext_ptr) + YY_MORE_ADJ; aag_cp < (aag_c_buf_p); ++aag_cp )
                {
                register YY_CHAR aag_c = (*aag_cp ? aag_ec[YY_SC_TO_UI(*aag_cp)] : 1);
                if ( aag_accept[aag_current_state] )
                        {
                        (aag_last_accepting_state) = aag_current_state;
                        (aag_last_accepting_cpos) = aag_cp;
                        }
                while ( aag_chk[aag_base[aag_current_state] + aag_c] != aag_current_state )
                        {
                        aag_current_state = (int) aag_def[aag_current_state];
                        if ( aag_current_state >= 93 )
                                aag_c = aag_meta[(unsigned int) aag_c];
                        }
                aag_current_state = aag_nxt[aag_base[aag_current_state] + (unsigned int) aag_c];
                }

        return aag_current_state;
}

/* aag_try_NUL_trans - try to make a transition on the NUL character
 *
 * synopsis
 *      next_state = aag_try_NUL_trans( current_state );
 */
    static aag_state_type aag_try_NUL_trans  (aag_state_type aag_current_state )
{
        register int aag_is_jam;
        register char *aag_cp = (aag_c_buf_p);

        register YY_CHAR aag_c = 1;
        if ( aag_accept[aag_current_state] )
                {
                (aag_last_accepting_state) = aag_current_state;
                (aag_last_accepting_cpos) = aag_cp;
                }
        while ( aag_chk[aag_base[aag_current_state] + aag_c] != aag_current_state )
                {
                aag_current_state = (int) aag_def[aag_current_state];
                if ( aag_current_state >= 93 )
                        aag_c = aag_meta[(unsigned int) aag_c];
                }
        aag_current_state = aag_nxt[aag_base[aag_current_state] + (unsigned int) aag_c];
        aag_is_jam = (aag_current_state == 92);

                return aag_is_jam ? 0 : aag_current_state;
}

    static void aagunput (int c, register char * aag_bp )
{
        register char *aag_cp;
    
    aag_cp = (aag_c_buf_p);

        /* undo effects of setting up aagtext */
        *aag_cp = (aag_hold_char);

        if ( aag_cp < YY_CURRENT_BUFFER_LVALUE->aag_ch_buf + 2 )
                { /* need to shift things up to make room */
                /* +2 for EOB chars. */
                register aag_size_t number_to_move = (aag_n_chars) + 2;
                register char *dest = &YY_CURRENT_BUFFER_LVALUE->aag_ch_buf[
                                        YY_CURRENT_BUFFER_LVALUE->aag_buf_size + 2];
                register char *source =
                                &YY_CURRENT_BUFFER_LVALUE->aag_ch_buf[number_to_move];

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

                aag_cp += (int) (dest - source);
                aag_bp += (int) (dest - source);
                YY_CURRENT_BUFFER_LVALUE->aag_n_chars =
                        (aag_n_chars) = YY_CURRENT_BUFFER_LVALUE->aag_buf_size;

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

        *--aag_cp = (char) c;

        (aagtext_ptr) = aag_bp;
        (aag_hold_char) = *aag_cp;
        (aag_c_buf_p) = aag_cp;
}

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

{
        int c;
    
        *(aag_c_buf_p) = (aag_hold_char);

        if ( *(aag_c_buf_p) == YY_END_OF_BUFFER_CHAR )
                {
                /* aag_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 ( (aag_c_buf_p) < &YY_CURRENT_BUFFER_LVALUE->aag_ch_buf[(aag_n_chars)] )
                        /* This was really a NUL. */
                        *(aag_c_buf_p) = '\0';

                else
                        { /* need more input */
                        aag_size_t offset = (aag_c_buf_p) - (aagtext_ptr);
                        ++(aag_c_buf_p);

                        switch ( aag_get_next_buffer(  ) )
                                {
                                case EOB_ACT_LAST_MATCH:
                                        /* This happens because aag_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. */
                                        aagrestart(aagin );

                                        /*FALLTHROUGH*/

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

                                        if ( ! (aag_did_buffer_switch_on_eof) )
                                                YY_NEW_FILE;
#ifdef __cplusplus
                                        return aaginput();
#else
                                        return input();
#endif
                                        }

                                case EOB_ACT_CONTINUE_SCAN:
                                        (aag_c_buf_p) = (aagtext_ptr) + offset;
                                        break;
                                }
                        }
                }

        c = *(unsigned char *) (aag_c_buf_p);   /* cast for 8-bit char's */
        *(aag_c_buf_p) = '\0';  /* preserve aagtext */
        (aag_hold_char) = *++(aag_c_buf_p);

        YY_CURRENT_BUFFER_LVALUE->aag_at_bol = (c == '\n');

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

    void aagrestart  (FILE * input_file )
{
    
        if ( ! YY_CURRENT_BUFFER ){
        aagensure_buffer_stack ();
                YY_CURRENT_BUFFER_LVALUE =
            aag_create_buffer(aagin,YY_BUF_SIZE );
        }

        aag_init_buffer(YY_CURRENT_BUFFER,input_file );
        aag_load_buffer_state( );
}

    void aag_switch_to_buffer  (YY_BUFFER_STATE  new_buffer )
{
    
        /* TODO. We should be able to replace this entire function body
         * with
         *              aagpop_buffer_state();
         *              aagpush_buffer_state(new_buffer);
     */
        aagensure_buffer_stack ();
        if ( YY_CURRENT_BUFFER == new_buffer )
                return;

        if ( YY_CURRENT_BUFFER )
                {
                /* Flush out information for old buffer. */
                *(aag_c_buf_p) = (aag_hold_char);
                YY_CURRENT_BUFFER_LVALUE->aag_buf_pos = (aag_c_buf_p);
                YY_CURRENT_BUFFER_LVALUE->aag_n_chars = (aag_n_chars);
                }

        YY_CURRENT_BUFFER_LVALUE = new_buffer;
        aag_load_buffer_state( );

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

static void aag_load_buffer_state  (void)
{
        (aag_n_chars) = YY_CURRENT_BUFFER_LVALUE->aag_n_chars;
        (aagtext_ptr) = (aag_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->aag_buf_pos;
        aagin = YY_CURRENT_BUFFER_LVALUE->aag_input_file;
        (aag_hold_char) = *(aag_c_buf_p);
}

    YY_BUFFER_STATE aag_create_buffer  (FILE * file, int  size )
{
        YY_BUFFER_STATE b;
    
        b = (YY_BUFFER_STATE) aagalloc(sizeof( struct aag_buffer_state )  );
        if ( ! b )
                YY_FATAL_ERROR( "out of dynamic memory in aag_create_buffer()" );

        b->aag_buf_size = size;

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

        b->aag_is_our_buffer = 1;

        aag_init_buffer(b,file );

        return b;
}

    void aag_delete_buffer (YY_BUFFER_STATE  b )
{
    
        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->aag_is_our_buffer )
                aagfree((void *) b->aag_ch_buf  );

        aagfree((void *) b  );
}

/* Initializes or reinitializes a buffer.
 * This function is sometimes called more than once on the same buffer,
 * such as during a aagrestart() or at EOF.
 */
    static void aag_init_buffer  (YY_BUFFER_STATE  b, FILE * file )

{
        int oerrno = errno;
    
        aag_flush_buffer(b );

        b->aag_input_file = file;
        b->aag_fill_buffer = 1;

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

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

    void aag_flush_buffer (YY_BUFFER_STATE  b )
{
        if ( ! b )
                return;

        b->aag_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->aag_ch_buf[0] = YY_END_OF_BUFFER_CHAR;
        b->aag_ch_buf[1] = YY_END_OF_BUFFER_CHAR;

        b->aag_buf_pos = &b->aag_ch_buf[0];

        b->aag_at_bol = 1;
        b->aag_buffer_status = YY_BUFFER_NEW;

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

void aagpush_buffer_state (YY_BUFFER_STATE new_buffer )
{
        if (new_buffer == NULL)
                return;

        aagensure_buffer_stack();

        /* This block is copied from aag_switch_to_buffer. */
        if ( YY_CURRENT_BUFFER )
                {
                /* Flush out information for old buffer. */
                *(aag_c_buf_p) = (aag_hold_char);
                YY_CURRENT_BUFFER_LVALUE->aag_buf_pos = (aag_c_buf_p);
                YY_CURRENT_BUFFER_LVALUE->aag_n_chars = (aag_n_chars);
                }

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

        /* copied from aag_switch_to_buffer. */
        aag_load_buffer_state( );
        (aag_did_buffer_switch_on_eof) = 1;
}

void aagpop_buffer_state (void)
{
        if (!YY_CURRENT_BUFFER)
                return;

        aag_delete_buffer(YY_CURRENT_BUFFER );
        YY_CURRENT_BUFFER_LVALUE = NULL;
        if ((aag_buffer_stack_top) > 0)
                --(aag_buffer_stack_top);

        if (YY_CURRENT_BUFFER) {
                aag_load_buffer_state( );
                (aag_did_buffer_switch_on_eof) = 1;
        }
}

/* Allocates the stack if it does not exist.
 *  Guarantees space for at least one push.
 */
static void aagensure_buffer_stack (void)
{
        aag_size_t num_to_alloc;
    
        if (!(aag_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;
                (aag_buffer_stack) = (struct aag_buffer_state**)aagalloc
                                                                (num_to_alloc * sizeof(struct aag_buffer_state*)
                                                                );
                if ( ! (aag_buffer_stack) )
                        YY_FATAL_ERROR( "out of dynamic memory in aagensure_buffer_stack()" );
                                                                  
                memset((aag_buffer_stack), 0, num_to_alloc * sizeof(struct aag_buffer_state*));
                                
                (aag_buffer_stack_max) = num_to_alloc;
                (aag_buffer_stack_top) = 0;
                return;
        }

        if ((aag_buffer_stack_top) >= ((aag_buffer_stack_max)) - 1){

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

                num_to_alloc = (aag_buffer_stack_max) + grow_size;
                (aag_buffer_stack) = (struct aag_buffer_state**)aagrealloc
                                                                ((aag_buffer_stack),
                                                                num_to_alloc * sizeof(struct aag_buffer_state*)
                                                                );
                if ( ! (aag_buffer_stack) )
                        YY_FATAL_ERROR( "out of dynamic memory in aagensure_buffer_stack()" );

                /* zero only the new slots.*/
                memset((aag_buffer_stack) + (aag_buffer_stack_max), 0, grow_size * sizeof(struct aag_buffer_state*));
                (aag_buffer_stack_max) = num_to_alloc;
        }
}

YY_BUFFER_STATE aag_scan_buffer  (char * base, aag_size_t  size )
{
        YY_BUFFER_STATE b;
    
        if ( size < 2 ||
             base[size-2] != YY_END_OF_BUFFER_CHAR ||
             base[size-1] != YY_END_OF_BUFFER_CHAR )
                /* They forgot to leave room for the EOB's. */
                return 0;

        b = (YY_BUFFER_STATE) aagalloc(sizeof( struct aag_buffer_state )  );
        if ( ! b )
                YY_FATAL_ERROR( "out of dynamic memory in aag_scan_buffer()" );

        b->aag_buf_size = size - 2;     /* "- 2" to take care of EOB's */
        b->aag_buf_pos = b->aag_ch_buf = base;
        b->aag_is_our_buffer = 0;
        b->aag_input_file = 0;
        b->aag_n_chars = b->aag_buf_size;
        b->aag_is_interactive = 0;
        b->aag_at_bol = 1;
        b->aag_fill_buffer = 0;
        b->aag_buffer_status = YY_BUFFER_NEW;

        aag_switch_to_buffer(b  );

        return b;
}

YY_BUFFER_STATE aag_scan_string (aagconst char * aagstr )
{
    
        return aag_scan_bytes(aagstr,strlen(aagstr) );
}

YY_BUFFER_STATE aag_scan_bytes  (aagconst char * aagbytes, aag_size_t  _aagbytes_len )
{
        YY_BUFFER_STATE b;
        char *buf;
        aag_size_t n;
        int i;
    
        /* Get memory for full buffer, including space for trailing EOB's. */
        n = _aagbytes_len + 2;
        buf = (char *) aagalloc(n  );
        if ( ! buf )
                YY_FATAL_ERROR( "out of dynamic memory in aag_scan_bytes()" );

        for ( i = 0; i < _aagbytes_len; ++i )
                buf[i] = aagbytes[i];

        buf[_aagbytes_len] = buf[_aagbytes_len+1] = YY_END_OF_BUFFER_CHAR;

        b = aag_scan_buffer(buf,n );
        if ( ! b )
                YY_FATAL_ERROR( "bad buffer in aag_scan_bytes()" );

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

        return b;
}

#ifndef YY_EXIT_FAILURE
#define YY_EXIT_FAILURE 2
#endif

static void aag_fatal_error (aagconst char* msg )
{
        (void) fprintf( stderr, "%s\n", msg );
        exit( YY_EXIT_FAILURE );
}

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

#undef aagless
#define aagless(n) \
        do \
                { \
                /* Undo effects of setting up aagtext. */ \
        int aagless_macro_arg = (n); \
        YY_LESS_LINENO(aagless_macro_arg);\
                aagtext[aagleng] = (aag_hold_char); \
                (aag_c_buf_p) = aagtext + aagless_macro_arg; \
                (aag_hold_char) = *(aag_c_buf_p); \
                *(aag_c_buf_p) = '\0'; \
                aagleng = aagless_macro_arg; \
                } \
        while ( 0 )

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

int aagget_lineno  (void)
{
        
    return aaglineno;
}

FILE *aagget_in  (void)
{
        return aagin;
}

FILE *aagget_out  (void)
{
        return aagout;
}

aag_size_t aagget_leng  (void)
{
        return aagleng;
}

char *aagget_text  (void)
{
        return aagtext;
}

void aagset_lineno (int  line_number )
{
    
    aaglineno = line_number;
}

void aagset_in (FILE *  in_str )
{
        aagin = in_str ;
}

void aagset_out (FILE *  out_str )
{
        aagout = out_str ;
}

int aagget_debug  (void)
{
        return aag_flex_debug;
}

void aagset_debug (int  bdebug )
{
        aag_flex_debug = bdebug ;
}

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

    (aag_buffer_stack) = 0;
    (aag_buffer_stack_top) = 0;
    (aag_buffer_stack_max) = 0;
    (aag_c_buf_p) = (char *) 0;
    (aag_init) = 0;
    (aag_start) = 0;

/* Defined in main.c */
#ifdef YY_STDINIT
    aagin = stdin;
    aagout = stdout;
#else
    aagin = (FILE *) 0;
    aagout = (FILE *) 0;
#endif

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

/* aaglex_destroy is for both reentrant and non-reentrant scanners. */
int aaglex_destroy  (void)
{
    
    /* Pop the buffer stack, destroying each element. */
        while(YY_CURRENT_BUFFER){
                aag_delete_buffer(YY_CURRENT_BUFFER  );
                YY_CURRENT_BUFFER_LVALUE = NULL;
                aagpop_buffer_state();
        }

        /* Destroy the stack itself. */
        aagfree((aag_buffer_stack) );
        (aag_buffer_stack) = NULL;

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

    return 0;
}

/*
 * Internal utility routines.
 */

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

#ifdef YY_NEED_STRLEN
static int aag_flex_strlen (aagconst char * s )
{
        register int n;
        for ( n = 0; s[n]; ++n )
                ;

        return n;
}
#endif

void *aagalloc (aag_size_t  size )
{
        return (void *) malloc( size );
}

void *aagrealloc  (void * ptr, aag_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 aagfree (void * ptr )
{
        free( (char *) ptr );   /* see aagrealloc() for (char *) cast */
}

#define YYTABLES_NAME "aagtables"

#line 228 "../../lib/cgraph/scan.l"


 
void aagerror(char *str)
{
        unsigned char   xbuf[BUFSIZ];
        char    buf[BUFSIZ];
        agxbuf  xb;

        agxbinit(&xb, BUFSIZ, xbuf);
        if (InputFile) {
                agxbput (&xb, InputFile);
                agxbput (&xb, ": ");
        }
        agxbput (&xb, str);
        sprintf(buf," in line %d", line_num);
        agxbput (&xb, buf);
        if (*aagtext) {
                agxbput(&xb," near '");
                agxbput (&xb, aagtext);
                agxbputc (&xb, '\'');
        }
        else switch (YYSTATE) {
        case qstring :
                sprintf(buf, " scanning a quoted string (missing endquote? longer than %d?)", YY_BUF_SIZE);
                agxbput (&xb, buf);
                if (*Sbuf) {
                        int len = strlen(Sbuf);
                        agxbput (&xb, "\nString starting:\"");
                        if (len > 80)
                                Sbuf[80] = '\0';
                        agxbput (&xb, Sbuf);
                }
                break;
        case hstring :
                sprintf(buf, " scanning a HTML string (missing '>'? bad nesting? longer than %d?)", YY_BUF_SIZE);
                agxbput (&xb, buf);
                if (*Sbuf) {
                        int len = strlen(Sbuf);
                        agxbput (&xb, "\nString starting:<");
                        if (len > 80)
                                Sbuf[80] = '\0';
                        agxbput (&xb, Sbuf);
                }
                break;
        case comment :
                sprintf(buf, " scanning a /*...*/ comment (missing '*/? longer than %d?)", YY_BUF_SIZE);
                agxbput (&xb, buf);
                break;
        }
        agxbputc (&xb, '\n');
        agerr(AGERR, "%s", agxbuse(&xb));
        agxbfree(&xb);
    BEGIN(INITIAL);
}
/* must be here to see flex's macro defns */
void aglexeof() { unput(GRAPH_EOF_TOKEN); }

void aglexbad() { YY_FLUSH_BUFFER; }

#ifndef YY_CALL_ONLY_ARG
# define YY_CALL_ONLY_ARG void
#endif

int aagwrap(YY_CALL_ONLY_ARG)
{
        return 1;
}