Update to GPLv3

[enscript.git] / states / lex.c

/* A lexical scanner generated by flex */

/* Scanner skeleton version:
 * $Header: /u/mtr/own/CVS/enscript/states/lex.c,v 1.1.1.1 2003/03/05 07:25:52 mtr Exp $
 */

#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION 2
#define YY_FLEX_MINOR_VERSION 5

#include <stdio.h>


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


#ifdef __cplusplus

#include <stdlib.h>
#include <unistd.h>

/* Use prototypes in function declarations. */
#define YY_USE_PROTOS

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

#else   /* ! __cplusplus */

#if __STDC__

#define YY_USE_PROTOS
#define YY_USE_CONST

#endif  /* __STDC__ */
#endif  /* ! __cplusplus */

#ifdef __TURBOC__
 #pragma warn -rch
 #pragma warn -use
#include <io.h>
#include <stdlib.h>
#define YY_USE_CONST
#define YY_USE_PROTOS
#endif

#ifdef YY_USE_CONST
#define yyconst const
#else
#define yyconst
#endif


#ifdef YY_USE_PROTOS
#define YY_PROTO(proto) proto
#else
#define YY_PROTO(proto) ()
#endif

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

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

/* Enter a start condition.  This macro really ought to take a parameter,
 * but we do it the disgusting crufty way forced on us by the ()-less
 * definition of BEGIN.
 */
#define BEGIN yy_start = 1 + 2 *

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

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

/* Special action meaning "start processing a new file". */
#define YY_NEW_FILE yyrestart( yyin )

#define YY_END_OF_BUFFER_CHAR 0

/* Size of default input buffer. */
#define YY_BUF_SIZE 16384

typedef struct yy_buffer_state *YY_BUFFER_STATE;

extern int yyleng;
extern FILE *yyin, *yyout;

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

/* The funky do-while in the following #define is used to turn the definition
 * int a single C statement (which needs a semi-colon terminator).  This
 * avoids problems with code like:
 *
 *      if ( condition_holds )
 *              yyless( 5 );
 *      else
 *              do_something_else();
 *
 * Prior to using the do-while the compiler would get upset at the
 * "else" because it interpreted the "if" statement as being all
 * done when it reached the ';' after the yyless() call.
 */

/* Return all but the first 'n' matched characters back to the input stream. */

#define yyless(n) \
        do \
                { \
                /* Undo effects of setting up yytext. */ \
                *yy_cp = yy_hold_char; \
                YY_RESTORE_YY_MORE_OFFSET \
                yy_c_buf_p = yy_cp = yy_bp + n - YY_MORE_ADJ; \
                YY_DO_BEFORE_ACTION; /* set up yytext again */ \
                } \
        while ( 0 )

#define unput(c) yyunput( c, yytext_ptr )

/* The following is because we cannot portably get our hands on size_t
 * (without autoconf's help, which isn't available because we want
 * flex-generated scanners to compile on their own).
 */
typedef unsigned int yy_size_t;


struct yy_buffer_state
        {
        FILE *yy_input_file;

        char *yy_ch_buf;                /* input buffer */
        char *yy_buf_pos;               /* current position in input buffer */

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

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

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

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

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

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

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

static YY_BUFFER_STATE yy_current_buffer = 0;

/* We provide macros for accessing buffer states in case in the
 * future we want to put the buffer states in a more general
 * "scanner state".
 */
#define YY_CURRENT_BUFFER yy_current_buffer


/* yy_hold_char holds the character lost when yytext is formed. */
static char yy_hold_char;

static int yy_n_chars;          /* number of characters read into yy_ch_buf */


int yyleng;

/* Points to current character in buffer. */
static char *yy_c_buf_p = (char *) 0;
static int yy_init = 1;         /* whether we need to initialize */
static int yy_start = 0;        /* start state number */

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

void yyrestart YY_PROTO(( FILE *input_file ));

void yy_switch_to_buffer YY_PROTO(( YY_BUFFER_STATE new_buffer ));
void yy_load_buffer_state YY_PROTO(( void ));
YY_BUFFER_STATE yy_create_buffer YY_PROTO(( FILE *file, int size ));
void yy_delete_buffer YY_PROTO(( YY_BUFFER_STATE b ));
void yy_init_buffer YY_PROTO(( YY_BUFFER_STATE b, FILE *file ));
void yy_flush_buffer YY_PROTO(( YY_BUFFER_STATE b ));
#define YY_FLUSH_BUFFER yy_flush_buffer( yy_current_buffer )

YY_BUFFER_STATE yy_scan_buffer YY_PROTO(( char *base, yy_size_t size ));
YY_BUFFER_STATE yy_scan_string YY_PROTO(( yyconst char *yy_str ));
YY_BUFFER_STATE yy_scan_bytes YY_PROTO(( yyconst char *bytes, int len ));

static void *yy_flex_alloc YY_PROTO(( yy_size_t ));
static void *yy_flex_realloc YY_PROTO(( void *, yy_size_t ));
static void yy_flex_free YY_PROTO(( void * ));

#define yy_new_buffer yy_create_buffer

#define yy_set_interactive(is_interactive) \
        { \
        if ( ! yy_current_buffer ) \
                yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
        yy_current_buffer->yy_is_interactive = is_interactive; \
        }

#define yy_set_bol(at_bol) \
        { \
        if ( ! yy_current_buffer ) \
                yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); \
        yy_current_buffer->yy_at_bol = at_bol; \
        }

#define YY_AT_BOL() (yy_current_buffer->yy_at_bol)

typedef unsigned char YY_CHAR;
FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;
typedef int yy_state_type;
extern char *yytext;
#define yytext_ptr yytext

static yy_state_type yy_get_previous_state YY_PROTO(( void ));
static yy_state_type yy_try_NUL_trans YY_PROTO(( yy_state_type current_state ));
static int yy_get_next_buffer YY_PROTO(( void ));
static void yy_fatal_error YY_PROTO(( yyconst char msg[] ));

/* Done after the current pattern has been matched and before the
 * corresponding action - sets up yytext.
 */
#define YY_DO_BEFORE_ACTION \
        yytext_ptr = yy_bp; \
        yyleng = (int) (yy_cp - yy_bp); \
        yy_hold_char = *yy_cp; \
        *yy_cp = '\0'; \
        yy_c_buf_p = yy_cp;

#define YY_NUM_RULES 39
#define YY_END_OF_BUFFER 40
static yyconst short int yy_accept[114] =
    {   0,
        0,    0,   40,   38,    2,    3,   38,    4,   38,   38,
       38,   38,   38,   38,   38,    7,   36,   38,   38,   38,
       37,   37,   37,   37,   37,   37,   37,   37,   37,   37,
       37,   37,   38,   24,   37,   27,    0,    0,   33,   29,
        0,   36,   31,   30,   32,   35,    1,   35,   25,   23,
       26,   37,   37,   37,   37,   37,   37,   37,   14,   37,
       37,   37,   37,   37,   37,   28,    5,    0,   35,   37,
        9,   10,   37,   37,   13,   37,   37,   37,   37,   21,
       37,    6,   37,   34,   11,   37,   37,   37,   37,   37,
       37,   37,    8,   37,   15,   37,   37,   18,   20,   22,

       37,   37,   17,   37,   12,   37,   37,   37,   37,   16,
       37,   19,    0
    } ;

static yyconst int yy_ec[256] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
        1,    2,    2,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    2,    4,    5,    1,    6,    1,    7,    8,    1,
        1,    9,   10,    1,   11,   12,   13,   14,   14,   14,
       14,   14,   14,   14,   14,   14,   14,    1,    1,   15,
       16,   17,    1,    1,   18,   19,   18,   20,   21,   18,
       22,   18,   23,   18,   18,   18,   18,   24,   18,   18,
       18,   18,   18,   18,   18,   18,   18,   18,   18,   18,
        1,   25,    1,    1,   18,    1,   26,   27,   28,   29,

       30,   31,   18,   32,   33,   18,   18,   34,   35,   36,
       37,   18,   18,   38,   39,   40,   41,   42,   43,   44,
       18,   18,    1,   45,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,

        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1
    } ;

static yyconst int yy_meta[46] =
    {   0,
        1,    1,    2,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    3,    1,    1,    1,    3,    3,    3,
        3,    3,    3,    3,    1,    3,    3,    3,    3,    3,
        3,    3,    3,    3,    3,    3,    3,    3,    3,    3,
        3,    3,    3,    3,    1
    } ;

static yyconst short int yy_base[118] =
    {   0,
        0,    0,  137,  138,  138,  138,  120,  138,    0,  128,
      109,  117,   36,   42,  118,  122,   35,  114,  113,  112,
        0,  106,  102,   92,   17,   87,   92,   85,   95,   90,
       19,   87,   73,  138,  138,  138,  109,    0,  138,  138,
      102,   43,  138,  138,  138,  101,  138,  100,  138,  138,
      138,    0,   91,   92,   69,   71,   69,   70,    0,   79,
       71,   65,   78,   76,   69,  138,  138,   93,   86,   76,
        0,   82,   67,   66,    0,   69,   64,   52,   24,    0,
       58,  138,   67,  138,    0,   54,   55,   50,   49,   46,
       55,   54,    0,   54,    0,   41,   45,   42,    0,    0,

       40,   44,    0,   36,    0,   46,   41,   35,   42,    0,
       27,    0,  138,   64,   67,   60,   70
    } ;

static yyconst short int yy_def[118] =
    {   0,
      113,    1,  113,  113,  113,  113,  113,  113,  114,  113,
      115,  113,  113,  113,  113,  113,  113,  113,  113,  113,
      116,  116,  116,  116,  116,  116,  116,  116,  116,  116,
      116,  116,  113,  113,  113,  113,  113,  117,  113,  113,
      113,  113,  113,  113,  113,  113,  113,  113,  113,  113,
      113,  116,  116,  116,  116,  116,  116,  116,  116,  116,
      116,  116,  116,  116,  116,  113,  113,  113,  113,  116,
      116,  116,  116,  116,  116,  116,  116,  116,  116,  116,
      116,  113,  116,  113,  116,  116,  116,  116,  116,  116,
      116,  116,  116,  116,  116,  116,  116,  116,  116,  116,

      116,  116,  116,  116,  116,  116,  116,  116,  116,  116,
      116,  116,    0,  113,  113,  113,  113
    } ;

static yyconst short int yy_nxt[184] =
    {   0,
        4,    5,    6,    7,    8,    9,   10,   11,   12,   13,
       14,   15,   16,   17,   18,   19,   20,   21,   22,   21,
       23,   21,   21,   21,    4,   21,   21,   21,   24,   25,
       26,   21,   27,   28,   21,   29,   21,   30,   31,   21,
       21,   21,   32,   21,   33,   40,   48,   41,   42,   42,
       56,   43,   44,   41,   48,   42,   42,   45,   63,   64,
       57,   90,   52,   91,   35,  112,   35,   37,   37,   37,
       68,  111,   68,  110,  109,  108,  107,  106,  105,  104,
      103,  102,  101,  100,   99,   98,   97,   96,   95,   94,
       93,   92,   89,   88,   87,   86,   85,   84,   83,   69,

       82,   81,   80,   79,   78,   77,   76,   75,   74,   73,
       72,   71,   70,   69,   46,   46,   67,   66,   65,   62,
       61,   60,   59,   58,   55,   54,   53,   51,   50,   49,
       47,   46,   39,   38,   36,   34,  113,    3,  113,  113,
      113,  113,  113,  113,  113,  113,  113,  113,  113,  113,
      113,  113,  113,  113,  113,  113,  113,  113,  113,  113,
      113,  113,  113,  113,  113,  113,  113,  113,  113,  113,
      113,  113,  113,  113,  113,  113,  113,  113,  113,  113,
      113,  113,  113
    } ;

static yyconst short int yy_chk[184] =
    {   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,   13,   17,   13,   17,   13,
       25,   13,   14,   14,   42,   14,   42,   14,   31,   31,
       25,   79,  116,   79,  114,  111,  114,  115,  115,  115,
      117,  109,  117,  108,  107,  106,  104,  102,  101,   98,
       97,   96,   94,   92,   91,   90,   89,   88,   87,   86,
       83,   81,   78,   77,   76,   74,   73,   72,   70,   69,

       68,   65,   64,   63,   62,   61,   60,   58,   57,   56,
       55,   54,   53,   48,   46,   41,   37,   33,   32,   30,
       29,   28,   27,   26,   24,   23,   22,   20,   19,   18,
       16,   15,   12,   11,   10,    7,    3,  113,  113,  113,
      113,  113,  113,  113,  113,  113,  113,  113,  113,  113,
      113,  113,  113,  113,  113,  113,  113,  113,  113,  113,
      113,  113,  113,  113,  113,  113,  113,  113,  113,  113,
      113,  113,  113,  113,  113,  113,  113,  113,  113,  113,
      113,  113,  113
    } ;

static yy_state_type yy_last_accepting_state;
static char *yy_last_accepting_cpos;

/* The intent behind this definition is that it'll catch
 * any uses of REJECT which flex missed.
 */
#define REJECT reject_used_but_not_detected
#define yymore() yymore_used_but_not_detected
#define YY_MORE_ADJ 0
#define YY_RESTORE_YY_MORE_OFFSET
char *yytext;
#line 1 "lex.l"
#define INITIAL 0
#line 2 "lex.l"
/*
 * Lexer for states.
 * Copyright (c) 1997-1998 Markku Rossi.
 *
 * Author: Markku Rossi <mtr@iki.fi>
 */

/*
 * This file is part of GNU Enscript.
 *
 * Enscript is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Enscript is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Enscript.  If not, see <http://www.gnu.org/licenses/>.
 */

/*
 * $Id: lex.c,v 1.1.1.1 2003/03/05 07:25:52 mtr Exp $
 */

#include "defs.h"
#include "gram.h"

static void eat_comment ();
static char *read_string ___P ((unsigned int *len_return));
static void read_regexp ___P ((Node *node));
#line 478 "lex.yy.c"

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

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

#ifndef YY_NO_UNPUT
static void yyunput YY_PROTO(( int c, char *buf_ptr ));
#endif

#ifndef yytext_ptr
static void yy_flex_strncpy YY_PROTO(( char *, yyconst char *, int ));
#endif

#ifdef YY_NEED_STRLEN
static int yy_flex_strlen YY_PROTO(( yyconst char * ));
#endif

#ifndef YY_NO_INPUT
#ifdef __cplusplus
static int yyinput YY_PROTO(( void ));
#else
static int input YY_PROTO(( void ));
#endif
#endif

#if YY_STACK_USED
static int yy_start_stack_ptr = 0;
static int yy_start_stack_depth = 0;
static int *yy_start_stack = 0;
#ifndef YY_NO_PUSH_STATE
static void yy_push_state YY_PROTO(( int new_state ));
#endif
#ifndef YY_NO_POP_STATE
static void yy_pop_state YY_PROTO(( void ));
#endif
#ifndef YY_NO_TOP_STATE
static int yy_top_state YY_PROTO(( void ));
#endif

#else
#define YY_NO_PUSH_STATE 1
#define YY_NO_POP_STATE 1
#define YY_NO_TOP_STATE 1
#endif

#ifdef YY_MALLOC_DECL
YY_MALLOC_DECL
#else
#if __STDC__
#ifndef __cplusplus
#include <stdlib.h>
#endif
#else
/* Just try to get by without declaring the routines.  This will fail
 * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int)
 * or sizeof(void*) != sizeof(int).
 */
#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 (void) fwrite( yytext, yyleng, 1, yyout )
#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->yy_is_interactive ) \
                { \
                int c = '*', n; \
                for ( n = 0; n < max_size && \
                             (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
                        buf[n] = (char) c; \
                if ( c == '\n' ) \
                        buf[n++] = (char) c; \
                if ( c == EOF && ferror( yyin ) ) \
                        YY_FATAL_ERROR( "input in flex scanner failed" ); \
                result = n; \
                } \
        else if ( ((result = fread( buf, 1, max_size, yyin )) == 0) \
                  && ferror( yyin ) ) \
                YY_FATAL_ERROR( "input in flex scanner failed" );
#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
#define YY_FATAL_ERROR(msg) yy_fatal_error( msg )
#endif

/* Default declaration of generated scanner - a define so the user can
 * easily add parameters.
 */
#ifndef YY_DECL
#define YY_DECL int yylex YY_PROTO(( void ))
#endif

/* 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 break;
#endif

#define YY_RULE_SETUP \
        YY_USER_ACTION

YY_DECL
        {
        register yy_state_type yy_current_state;
        register char *yy_cp, *yy_bp;
        register int yy_act;

#line 44 "lex.l"


#line 632 "lex.yy.c"

        if ( yy_init )
                {
                yy_init = 0;

#ifdef YY_USER_INIT
                YY_USER_INIT;
#endif

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

                if ( ! yyin )
                        yyin = stdin;

                if ( ! yyout )
                        yyout = stdout;

                if ( ! yy_current_buffer )
                        yy_current_buffer =
                                yy_create_buffer( yyin, YY_BUF_SIZE );

                yy_load_buffer_state();
                }

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

                yy_current_state = yy_start;
yy_match:
                do
                        {
                        register 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 >= 114 )
                                        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] != 138 );

yy_find_action:
                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;


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


                switch ( yy_act )
        { /* beginning of action switch */
                        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;

case 1:
YY_RULE_SETUP
#line 46 "lex.l"
{ eat_comment (); }
        YY_BREAK
case 2:
YY_RULE_SETUP
#line 47 "lex.l"
{ ; }
        YY_BREAK
case 3:
YY_RULE_SETUP
#line 48 "lex.l"
{ linenum++; }
        YY_BREAK
case 4:
YY_RULE_SETUP
#line 50 "lex.l"
{ yylval.node = node_alloc (nSTRING);
                  yylval.node->u.str.data
                    = read_string (&yylval.node->u.str.len);
                  return tSTRING;
                }
        YY_BREAK
case 5:
YY_RULE_SETUP
#line 56 "lex.l"
{ yylval.node = node_alloc (nINTEGER);
                  yylval.node->u.integer = yytext[1];
                  return tINTEGER;
                }
        YY_BREAK
case 6:
YY_RULE_SETUP
#line 61 "lex.l"
{ yylval.node = node_alloc (nINTEGER);
                  switch (yytext[2])
                    {
                    case 'n':
                      yylval.node->u.integer = '\n';
                      break;

                    case 't':
                      yylval.node->u.integer = '\t';
                      break;

                    case 'v':
                      yylval.node->u.integer = '\v';
                      break;

                    case 'b':
                      yylval.node->u.integer = '\b';
                      break;

                    case 'r':
                      yylval.node->u.integer = '\r';
                      break;

                    case 'f':
                      yylval.node->u.integer = '\f';
                      break;

                    case 'a':
                      yylval.node->u.integer = '\a';
                      break;

                    default:
                      yylval.node->u.integer = yytext[2];
                      break;
                    }

                  return tINTEGER;
                }
        YY_BREAK
case 7:
YY_RULE_SETUP
#line 100 "lex.l"
{ yylval.node = node_alloc (nREGEXP);
                  read_regexp (yylval.node);
                  return tREGEXP;
                }
        YY_BREAK
case 8:
YY_RULE_SETUP
#line 105 "lex.l"
{ return tBEGIN; }
        YY_BREAK
case 9:
YY_RULE_SETUP
#line 106 "lex.l"
{ return tEND; }
        YY_BREAK
case 10:
YY_RULE_SETUP
#line 107 "lex.l"
{ return tDIV; }
        YY_BREAK
case 11:
YY_RULE_SETUP
#line 108 "lex.l"
{ return tELSE; }
        YY_BREAK
case 12:
YY_RULE_SETUP
#line 109 "lex.l"
{ return tEXTENDS; }
        YY_BREAK
case 13:
YY_RULE_SETUP
#line 110 "lex.l"
{ return tFOR; }
        YY_BREAK
case 14:
YY_RULE_SETUP
#line 111 "lex.l"
{ return tIF; }
        YY_BREAK
case 15:
YY_RULE_SETUP
#line 112 "lex.l"
{ return tLOCAL; }
        YY_BREAK
case 16:
YY_RULE_SETUP
#line 113 "lex.l"
{ return tNAMERULES; }
        YY_BREAK
case 17:
YY_RULE_SETUP
#line 114 "lex.l"
{ return tRETURN; }
        YY_BREAK
case 18:
YY_RULE_SETUP
#line 115 "lex.l"
{ return tSTART; }
        YY_BREAK
case 19:
YY_RULE_SETUP
#line 116 "lex.l"
{ return tSTARTRULES; }
        YY_BREAK
case 20:
YY_RULE_SETUP
#line 117 "lex.l"
{ return tSTATE; }
        YY_BREAK
case 21:
YY_RULE_SETUP
#line 118 "lex.l"
{ return tSUB; }
        YY_BREAK
case 22:
YY_RULE_SETUP
#line 119 "lex.l"
{ return tWHILE; }
        YY_BREAK
case 23:
YY_RULE_SETUP
#line 121 "lex.l"
{ return tEQ; }
        YY_BREAK
case 24:
YY_RULE_SETUP
#line 122 "lex.l"
{ return tNE; }
        YY_BREAK
case 25:
YY_RULE_SETUP
#line 123 "lex.l"
{ return tLE; }
        YY_BREAK
case 26:
YY_RULE_SETUP
#line 124 "lex.l"
{ return tGE; }
        YY_BREAK
case 27:
YY_RULE_SETUP
#line 125 "lex.l"
{ return tAND; }
        YY_BREAK
case 28:
YY_RULE_SETUP
#line 126 "lex.l"
{ return tOR; }
        YY_BREAK
case 29:
YY_RULE_SETUP
#line 127 "lex.l"
{ return tPLUSPLUS; }
        YY_BREAK
case 30:
YY_RULE_SETUP
#line 128 "lex.l"
{ return tMINUSMINUS; }
        YY_BREAK
case 31:
YY_RULE_SETUP
#line 129 "lex.l"
{ return tADDASSIGN; }
        YY_BREAK
case 32:
YY_RULE_SETUP
#line 130 "lex.l"
{ return tSUBASSIGN; }
        YY_BREAK
case 33:
YY_RULE_SETUP
#line 131 "lex.l"
{ return tMULASSIGN; }
        YY_BREAK
case 34:
YY_RULE_SETUP
#line 132 "lex.l"
{ return tDIVASSIGN; }
        YY_BREAK
case 35:
YY_RULE_SETUP
#line 134 "lex.l"
{ yylval.node = node_alloc (nREAL);
                  yylval.node->u.real = atof (yytext);
                  return tREAL;
                }
        YY_BREAK
case 36:
YY_RULE_SETUP
#line 138 "lex.l"
{ yylval.node = node_alloc (nINTEGER);
                  yylval.node->u.integer = atoi (yytext);
                  return tINTEGER;
                }
        YY_BREAK
case 37:
YY_RULE_SETUP
#line 142 "lex.l"
{ yylval.node = node_alloc (nSYMBOL);
                  yylval.node->u.sym = xstrdup (yytext);
                  return tSYMBOL;
                }
        YY_BREAK
case 38:
YY_RULE_SETUP
#line 147 "lex.l"
{ return yytext[0]; }
        YY_BREAK
case 39:
YY_RULE_SETUP
#line 149 "lex.l"
ECHO;
        YY_BREAK
#line 966 "lex.yy.c"
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->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->yy_n_chars;
                        yy_current_buffer->yy_input_file = yyin;
                        yy_current_buffer->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->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
                                {
                                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->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 yylex */


/* 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
 */

static int yy_get_next_buffer()
        {
        register char *dest = yy_current_buffer->yy_ch_buf;
        register char *source = yytext_ptr;
        register int number_to_move, i;
        int ret_val;

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

        if ( yy_current_buffer->yy_fill_buffer == 0 )
                { /* Don't try to fill the buffer, so this is an EOF. */
                if ( yy_c_buf_p - yytext_ptr - YY_MORE_ADJ == 1 )
                        {
                        /* We matched a single character, the EOB, so
                         * treat this as a final EOF.
                         */
                        return EOB_ACT_END_OF_FILE;
                        }

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

        /* Try to read more data. */

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

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

        if ( yy_current_buffer->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->yy_n_chars = yy_n_chars = 0;

        else
                {
                int num_to_read =
                        yy_current_buffer->yy_buf_size - number_to_move - 1;

                while ( num_to_read <= 0 )
                        { /* Not enough room in the buffer - grow it. */
#ifdef YY_USES_REJECT
                        YY_FATAL_ERROR(
"input buffer overflow, can't enlarge buffer because scanner uses REJECT" );
#else

                        /* just a shorter name for the current buffer */
                        YY_BUFFER_STATE b = yy_current_buffer;

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

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

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

                                b->yy_ch_buf = (char *)
                                        /* Include room in for 2 EOB chars. */
                                        yy_flex_realloc( (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->yy_buf_size -
                                                number_to_move - 1;
#endif
                        }

                if ( num_to_read > YY_READ_BUF_SIZE )
                        num_to_read = YY_READ_BUF_SIZE;

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

                yy_current_buffer->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->yy_buffer_status =
                                YY_BUFFER_EOF_PENDING;
                        }
                }

        else
                ret_val = EOB_ACT_CONTINUE_SCAN;

        yy_n_chars += number_to_move;
        yy_current_buffer->yy_ch_buf[yy_n_chars] = YY_END_OF_BUFFER_CHAR;
        yy_current_buffer->yy_ch_buf[yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR;

        yytext_ptr = &yy_current_buffer->yy_ch_buf[0];

        return ret_val;
        }


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

static yy_state_type yy_get_previous_state()
        {
        register yy_state_type yy_current_state;
        register char *yy_cp;

        yy_current_state = yy_start;

        for ( yy_cp = yytext_ptr + YY_MORE_ADJ; yy_cp < yy_c_buf_p; ++yy_cp )
                {
                register 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 >= 114 )
                                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 );
 */

#ifdef YY_USE_PROTOS
static yy_state_type yy_try_NUL_trans( yy_state_type yy_current_state )
#else
static yy_state_type yy_try_NUL_trans( yy_current_state )
yy_state_type yy_current_state;
#endif
        {
        register int yy_is_jam;
        register char *yy_cp = yy_c_buf_p;

        register 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 >= 114 )
                        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 == 113);

        return yy_is_jam ? 0 : yy_current_state;
        }


#ifndef YY_NO_UNPUT
#ifdef YY_USE_PROTOS
static void yyunput( int c, register char *yy_bp )
#else
static void yyunput( c, yy_bp )
int c;
register char *yy_bp;
#endif
        {
        register char *yy_cp = yy_c_buf_p;

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

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

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

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

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

        *--yy_cp = (char) c;


        yytext_ptr = yy_bp;
        yy_hold_char = *yy_cp;
        yy_c_buf_p = yy_cp;
        }
#endif  /* ifndef YY_NO_UNPUT */


#ifdef __cplusplus
static int yyinput()
#else
static int input()
#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->yy_ch_buf[yy_n_chars] )
                        /* This was really a NUL. */
                        *yy_c_buf_p = '\0';

                else
                        { /* need more input */
                        int 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 );

                                        /* fall through */

                                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;


        return c;
        }


#ifdef YY_USE_PROTOS
void yyrestart( FILE *input_file )
#else
void yyrestart( input_file )
FILE *input_file;
#endif
        {
        if ( ! yy_current_buffer )
                yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE );

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


#ifdef YY_USE_PROTOS
void yy_switch_to_buffer( YY_BUFFER_STATE new_buffer )
#else
void yy_switch_to_buffer( new_buffer )
YY_BUFFER_STATE new_buffer;
#endif
        {
        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->yy_buf_pos = yy_c_buf_p;
                yy_current_buffer->yy_n_chars = yy_n_chars;
                }

        yy_current_buffer = 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;
        }


#ifdef YY_USE_PROTOS
void yy_load_buffer_state( void )
#else
void yy_load_buffer_state()
#endif
        {
        yy_n_chars = yy_current_buffer->yy_n_chars;
        yytext_ptr = yy_c_buf_p = yy_current_buffer->yy_buf_pos;
        yyin = yy_current_buffer->yy_input_file;
        yy_hold_char = *yy_c_buf_p;
        }


#ifdef YY_USE_PROTOS
YY_BUFFER_STATE yy_create_buffer( FILE *file, int size )
#else
YY_BUFFER_STATE yy_create_buffer( file, size )
FILE *file;
int size;
#endif
        {
        YY_BUFFER_STATE b;

        b = (YY_BUFFER_STATE) yy_flex_alloc( sizeof( struct yy_buffer_state ) );
        if ( ! b )
                YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );

        b->yy_buf_size = size;

        /* yy_ch_buf has to be 2 characters longer than the size given because
         * we need to put in 2 end-of-buffer characters.
         */
        b->yy_ch_buf = (char *) yy_flex_alloc( 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;
        }


#ifdef YY_USE_PROTOS
void yy_delete_buffer( YY_BUFFER_STATE b )
#else
void yy_delete_buffer( b )
YY_BUFFER_STATE b;
#endif
        {
        if ( ! b )
                return;

        if ( b == yy_current_buffer )
                yy_current_buffer = (YY_BUFFER_STATE) 0;

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

        yy_flex_free( (void *) b );
        }


#ifndef YY_ALWAYS_INTERACTIVE
#ifndef YY_NEVER_INTERACTIVE
extern int isatty YY_PROTO(( int ));
#endif
#endif

#ifdef YY_USE_PROTOS
void yy_init_buffer( YY_BUFFER_STATE b, FILE *file )
#else
void yy_init_buffer( b, file )
YY_BUFFER_STATE b;
FILE *file;
#endif


        {
        yy_flush_buffer( b );

        b->yy_input_file = file;
        b->yy_fill_buffer = 1;

#if YY_ALWAYS_INTERACTIVE
        b->yy_is_interactive = 1;
#else
#if YY_NEVER_INTERACTIVE
        b->yy_is_interactive = 0;
#else
        b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
#endif
#endif
        }


#ifdef YY_USE_PROTOS
void yy_flush_buffer( YY_BUFFER_STATE b )
#else
void yy_flush_buffer( b )
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();
        }


#ifndef YY_NO_SCAN_BUFFER
#ifdef YY_USE_PROTOS
YY_BUFFER_STATE yy_scan_buffer( char *base, yy_size_t size )
#else
YY_BUFFER_STATE yy_scan_buffer( base, size )
char *base;
yy_size_t size;
#endif
        {
        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) yy_flex_alloc( sizeof( struct yy_buffer_state ) );
        if ( ! b )
                YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );

        b->yy_buf_size = size - 2;      /* "- 2" to take care of EOB's */
        b->yy_buf_pos = b->yy_ch_buf = base;
        b->yy_is_our_buffer = 0;
        b->yy_input_file = 0;
        b->yy_n_chars = b->yy_buf_size;
        b->yy_is_interactive = 0;
        b->yy_at_bol = 1;
        b->yy_fill_buffer = 0;
        b->yy_buffer_status = YY_BUFFER_NEW;

        yy_switch_to_buffer( b );

        return b;
        }
#endif


#ifndef YY_NO_SCAN_STRING
#ifdef YY_USE_PROTOS
YY_BUFFER_STATE yy_scan_string( yyconst char *yy_str )
#else
YY_BUFFER_STATE yy_scan_string( yy_str )
yyconst char *yy_str;
#endif
        {
        int len;
        for ( len = 0; yy_str[len]; ++len )
                ;

        return yy_scan_bytes( yy_str, len );
        }
#endif


#ifndef YY_NO_SCAN_BYTES
#ifdef YY_USE_PROTOS
YY_BUFFER_STATE yy_scan_bytes( yyconst char *bytes, int len )
#else
YY_BUFFER_STATE yy_scan_bytes( bytes, len )
yyconst char *bytes;
int len;
#endif
        {
        YY_BUFFER_STATE b;
        char *buf;
        yy_size_t n;
        int i;

        /* Get memory for full buffer, including space for trailing EOB's. */
        n = len + 2;
        buf = (char *) yy_flex_alloc( n );
        if ( ! buf )
                YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );

        for ( i = 0; i < len; ++i )
                buf[i] = bytes[i];

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

        b = yy_scan_buffer( buf, n );
        if ( ! b )
                YY_FATAL_ERROR( "bad buffer in yy_scan_bytes()" );

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

        return b;
        }
#endif


#ifndef YY_NO_PUSH_STATE
#ifdef YY_USE_PROTOS
static void yy_push_state( int new_state )
#else
static void yy_push_state( new_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 *) yy_flex_alloc( new_size );

                else
                        yy_start_stack = (int *) yy_flex_realloc(
                                        (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);
        }
#endif


#ifndef YY_NO_POP_STATE
static void yy_pop_state()
        {
        if ( --yy_start_stack_ptr < 0 )
                YY_FATAL_ERROR( "start-condition stack underflow" );

        BEGIN(yy_start_stack[yy_start_stack_ptr]);
        }
#endif


#ifndef YY_NO_TOP_STATE
static int yy_top_state()
        {
        return yy_start_stack[yy_start_stack_ptr - 1];
        }
#endif

#ifndef YY_EXIT_FAILURE
#define YY_EXIT_FAILURE 2
#endif

#ifdef YY_USE_PROTOS
static void yy_fatal_error( yyconst char msg[] )
#else
static void yy_fatal_error( msg )
char msg[];
#endif
        {
        (void) fprintf( stderr, "%s\n", msg );
        exit( YY_EXIT_FAILURE );
        }



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

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


/* Internal utility routines. */

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

#ifdef YY_NEED_STRLEN
#ifdef YY_USE_PROTOS
static int yy_flex_strlen( yyconst char *s )
#else
static int yy_flex_strlen( s )
yyconst char *s;
#endif
        {
        register int n;
        for ( n = 0; s[n]; ++n )
                ;

        return n;
        }
#endif


#ifdef YY_USE_PROTOS
static void *yy_flex_alloc( yy_size_t size )
#else
static void *yy_flex_alloc( size )
yy_size_t size;
#endif
        {
        return (void *) malloc( size );
        }

#ifdef YY_USE_PROTOS
static void *yy_flex_realloc( void *ptr, yy_size_t size )
#else
static void *yy_flex_realloc( ptr, size )
void *ptr;
yy_size_t size;
#endif
        {
        /* 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 );
        }

#ifdef YY_USE_PROTOS
static void yy_flex_free( void *ptr )
#else
static void yy_flex_free( ptr )
void *ptr;
#endif
        {
        free( ptr );
        }

#if YY_MAIN
int main()
        {
        yylex();
        return 0;
        }
#endif
#line 149 "lex.l"


static void
eat_comment ()
{
  int c;

  while ((c = input ()) != EOF)
    {
      if (c == '\n')
        linenum++;
      else if (c == '*')
        {
          c = input ();
          if (c == '/')
            /* All done. */
            return;

          if (c == EOF)
            {
              yyerror (_("error: EOF in comment"));
              break;
            }
          unput (c);
        }
    }
  yyerror (_("error: EOF in comment"));
}


int
yywrap ()
{
  return 1;
}

static char *
read_string (len_return)
     unsigned int *len_return;
{
  char *buf = NULL;
  char *buf2;
  int buflen = 0;
  int bufpos = 0;
  int ch;
  int done = 0;

  while (!done)
    {
      ch = input ();
      if (ch == '\n')
        linenum++;

      switch (ch)
        {
        case EOF:
        unexpected_eof:
          yyerror (_("error: EOF in string constant"));
          done = 1;
          break;

        case '"':
          done = 1;
          break;

        case '\\':
          ch = input ();
          switch (ch)
            {
            case 'n':
              ch = '\n';
              break;

            case 't':
              ch = '\t';
              break;

            case 'v':
              ch = '\v';
              break;

            case 'b':
              ch = '\b';
              break;

            case 'r':
              ch = '\r';
              break;

            case 'f':
              ch = '\f';
              break;

            case 'a':
              ch = '\a';
              break;

            case EOF:
              goto unexpected_eof;
              break;

            default:
              if (ch == '0')
                {
                  int i;
                  int val = 0;

                  for (i = 0; i < 3; i++)
                    {
                      ch = input ();
                      if ('0' <= ch && ch <= '7')
                        val = val * 8 + ch - '0';
                      else
                        {
                          unput (ch);
                          break;
                        }
                    }
                  ch = val;
                }
              break;
            }
          /* FALLTHROUGH */

        default:
          if (bufpos >= buflen)
            {
              buflen += 1024;
              buf = (char *) xrealloc (buf, buflen);
            }
          buf[bufpos++] = ch;
          break;
        }
    }

  buf2 = (char *) xmalloc (bufpos + 1);
  memcpy (buf2, buf, bufpos);
  buf2[bufpos] = '\0';
  xfree (buf);

  *len_return = bufpos;

  return buf2;
}


static void
read_regexp (node)
     Node *node;
{
  char *buf = NULL;
  char *buf2;
  int buflen = 0;
  int bufpos = 0;
  int ch;
  int done = 0;

  while (!done)
    {
      ch = input ();
      switch (ch)
        {
        case EOF:
        unexpected_eof:
          yyerror (_("error: EOF in regular expression"));
          done = 1;
          break;

        case '/':
          done = 1;
          break;

        case '\\':
          ch = input ();
          switch (ch)
            {
            case '\n':
              /* Line break. */
              linenum++;
              continue;
              break;

            case 'n':
              ch = '\n';
              break;

            case 'r':
              ch = '\r';
              break;

            case 'f':
              ch = '\f';
              break;

            case 't':
              ch = '\t';
              break;

            case '/':
            case '\\':
              /* Quote these. */
              break;

            case EOF:
              goto unexpected_eof;
              break;

            default:
              if (ch == '0')
                {
                  int i;
                  int val = 0;

                  for (i = 0; i < 3; i++)
                    {
                      ch = input ();
                      if ('0' <= ch && ch <= '7')
                        val = val * 8 + ch - '0';
                      else
                        {
                          unput (ch);
                          break;
                        }
                    }
                  ch = val;
                }
              else
                {
                  /* Pass it through. */
                  unput (ch);
                  ch = '\\';
                }
              break;
            }
          /* FALLTHROUGH */

        default:
          if (bufpos >= buflen)
            {
              buflen += 1024;
              buf = (char *) xrealloc (buf, buflen);
            }
          buf[bufpos++] = ch;
          break;
        }
    }

  /* Possible options. */
  done = 0;
  while (!done)
    {
      ch = input ();
      switch (ch)
        {
        case 'i':
          /* Case-insensitive regular expression. */
          node->u.re.flags |= fRE_CASE_INSENSITIVE;
          break;

        default:
          /* Unknown option => this belongs to the next token. */
          unput (ch);
          done = 1;
          break;
        }
    }

  buf2 = (char *) xmalloc (bufpos + 1);
  memcpy (buf2, buf, bufpos);
  buf2[bufpos] = '\0';
  xfree (buf);

  node->u.re.data = buf2;
  node->u.re.len = bufpos;
}

\f
/*
Local variables:
mode: c
End:
*/