MFV: r362286

[FreeBSD/FreeBSD.git] / contrib / flex / src / flex.skl

%# -*-C-*- vi: set ft=c:
%# This file is processed in several stages.
%# Here are the stages, as best as I can describe:
%#
%#   1. flex.skl is processed through GNU m4 during the
%#      pre-compilation stage of flex. Only macros starting
%#      with `m4preproc_' are processed, and quoting is normal.
%#
%#   2. The preprocessed skeleton is translated into a C array, saved
%#      as "skel.c" and compiled into the flex binary. The %# comment
%#      lines are removed.
%#
%#   3. At runtime, the skeleton is generated and filtered (again)
%#      through m4. Macros beginning with `m4_' will be processed.
%#      The quoting is "[[" and "]]" so we don't interfere with
%#      user code.
%#
%# All generate macros for the m4 stage contain the text "m4" or "M4"
%# in them. This is to distinguish them from CPP macros.
%# The exception to this rule is YY_G, which is an m4 macro,
%# but it needs to be remain short because it is used everywhere.
%#
/* A lexical scanner generated by flex */

%#  Macros for preproc stage.
m4preproc_changecom

%# Macros for runtime processing stage.
m4_changecom
m4_changequote
m4_changequote([[, ]])

%#
%# Lines in this skeleton starting with a "%" character are "control lines"
%# and affect the generation of the scanner. The possible control codes are
%# listed and processed in misc.c.
%#
%#   %#  -  A comment. The current line is omitted from the generated scanner.
%#   %if-c++-only  -  The following lines are printed for C++ scanners ONLY.
%#   %if-c-only    -  The following lines are NOT printed for C++ scanners.
%#   %if-c-or-c++  -  The following lines are printed in BOTH C and C++ scanners.
%#   %if-reentrant     - Print for reentrant scanners.(push)
%#   %if-not-reentrant - Print for non-reentrant scanners. (push)
%#   %if-bison-bridge  - Print for bison-bridge. (push)
%#   %if-not-bison-bridge  - Print for non-bison-bridge. (push)
%#   %endif        - pop from the previous if code.
%#   %%  -  A stop-point, where code is inserted by flex.
%#          Each stop-point is numbered here and also in the code generator.
%#          (See gen.c, etc. for details.)
%#   %not-for-header  -  Begin code that should NOT appear in a ".h" file.
%#   %ok-for-header   -  %c and %e are used for building a header file.
%#   %if-tables-serialization
%#
%#   All control-lines EXCEPT comment lines ("%#") will be inserted into
%#   the generated scanner as a C-style comment. This is to aid those who
%#   edit the skeleton.
%#

%not-for-header
%if-c-only
%if-not-reentrant
m4_ifelse(M4_YY_PREFIX,yy,,
#define yy_create_buffer M4_YY_PREFIX[[_create_buffer]]
#define yy_delete_buffer M4_YY_PREFIX[[_delete_buffer]]
#define yy_scan_buffer M4_YY_PREFIX[[_scan_buffer]]
#define yy_scan_string M4_YY_PREFIX[[_scan_string]]
#define yy_scan_bytes M4_YY_PREFIX[[_scan_bytes]]
#define yy_init_buffer M4_YY_PREFIX[[_init_buffer]]
#define yy_flush_buffer M4_YY_PREFIX[[_flush_buffer]]
#define yy_load_buffer_state M4_YY_PREFIX[[_load_buffer_state]]
#define yy_switch_to_buffer M4_YY_PREFIX[[_switch_to_buffer]]
#define yypush_buffer_state M4_YY_PREFIX[[push_buffer_state]]
#define yypop_buffer_state M4_YY_PREFIX[[pop_buffer_state]]
#define yyensure_buffer_stack M4_YY_PREFIX[[ensure_buffer_stack]]
#define yy_flex_debug M4_YY_PREFIX[[_flex_debug]]
#define yyin M4_YY_PREFIX[[in]]
#define yyleng M4_YY_PREFIX[[leng]]
#define yylex M4_YY_PREFIX[[lex]]
#define yylineno M4_YY_PREFIX[[lineno]]
#define yyout M4_YY_PREFIX[[out]]
#define yyrestart M4_YY_PREFIX[[restart]]
#define yytext M4_YY_PREFIX[[text]]
#define yywrap M4_YY_PREFIX[[wrap]]
#define yyalloc M4_YY_PREFIX[[alloc]]
#define yyrealloc M4_YY_PREFIX[[realloc]]
#define yyfree M4_YY_PREFIX[[free]]
)
%endif
%endif
%ok-for-header

#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION FLEX_MAJOR_VERSION
#define YY_FLEX_MINOR_VERSION FLEX_MINOR_VERSION
#define YY_FLEX_SUBMINOR_VERSION FLEX_SUBMINOR_VERSION
#if YY_FLEX_SUBMINOR_VERSION > 0
#define FLEX_BETA
#endif

%# Some negated symbols
m4_ifdef( [[M4_YY_IN_HEADER]], , [[m4_define([[M4_YY_NOT_IN_HEADER]], [[]])]])
m4_ifdef( [[M4_YY_REENTRANT]], , [[m4_define([[M4_YY_NOT_REENTRANT]], [[]])]])

%# This is the m4 way to say "(stack_used || is_reentrant)
m4_ifdef( [[M4_YY_STACK_USED]], [[m4_define([[M4_YY_HAS_START_STACK_VARS]])]])
m4_ifdef( [[M4_YY_REENTRANT]],  [[m4_define([[M4_YY_HAS_START_STACK_VARS]])]])

%# Prefixes.
%# The complexity here is necessary so that m4 preserves
%# the argument lists to each C function.


m4_ifdef( [[M4_YY_PREFIX]],, [[m4_define([[M4_YY_PREFIX]], [[yy]])]])

m4preproc_define(`M4_GEN_PREFIX',``
[[#ifdef yy$1
#define ]]M4_YY_PREFIX[[$1_ALREADY_DEFINED
#else
#define yy$1 ]]M4_YY_PREFIX[[$1
#endif]]
'm4preproc_divert(1)`
[[#ifndef ]]M4_YY_PREFIX[[$1_ALREADY_DEFINED
#undef yy$1
#endif]]'m4preproc_divert(0)')

%if-c++-only
    /* The c++ scanner is a mess. The FlexLexer.h header file relies on the
     * following macro. This is required in order to pass the c++-multiple-scanners
     * test in the regression suite. We get reports that it breaks inheritance.
     * We will address this in a future release of flex, or omit the C++ scanner
     * altogether.
     */
    #define yyFlexLexer M4_YY_PREFIX[[FlexLexer]]
%endif

%if-c-only
m4_ifelse(M4_YY_PREFIX,yy,,
    M4_GEN_PREFIX(`_create_buffer')
    M4_GEN_PREFIX(`_delete_buffer')
    M4_GEN_PREFIX(`_scan_buffer')
    M4_GEN_PREFIX(`_scan_string')
    M4_GEN_PREFIX(`_scan_bytes')
    M4_GEN_PREFIX(`_init_buffer')
    M4_GEN_PREFIX(`_flush_buffer')
    M4_GEN_PREFIX(`_load_buffer_state')
    M4_GEN_PREFIX(`_switch_to_buffer')
    M4_GEN_PREFIX(`push_buffer_state')
    M4_GEN_PREFIX(`pop_buffer_state')
    M4_GEN_PREFIX(`ensure_buffer_stack')
    M4_GEN_PREFIX(`lex')
    M4_GEN_PREFIX(`restart')
    M4_GEN_PREFIX(`lex_init')
    M4_GEN_PREFIX(`lex_init_extra')
    M4_GEN_PREFIX(`lex_destroy')
    M4_GEN_PREFIX(`get_debug')
    M4_GEN_PREFIX(`set_debug')
    M4_GEN_PREFIX(`get_extra')
    M4_GEN_PREFIX(`set_extra')
    M4_GEN_PREFIX(`get_in')
    M4_GEN_PREFIX(`set_in')
    M4_GEN_PREFIX(`get_out')
    M4_GEN_PREFIX(`set_out')
    M4_GEN_PREFIX(`get_leng')
    M4_GEN_PREFIX(`get_text')
    M4_GEN_PREFIX(`get_lineno')
    M4_GEN_PREFIX(`set_lineno')
    m4_ifdef( [[M4_YY_REENTRANT]],
    [[
        M4_GEN_PREFIX(`get_column')
        M4_GEN_PREFIX(`set_column')
    ]])
    M4_GEN_PREFIX(`wrap')
)
%endif

m4_ifdef( [[M4_YY_BISON_LVAL]],
[[
    M4_GEN_PREFIX(`get_lval')
    M4_GEN_PREFIX(`set_lval')
]])

m4_ifdef( [[<M4_YY_BISON_LLOC>]],
[[
    M4_GEN_PREFIX(`get_lloc')
    M4_GEN_PREFIX(`set_lloc')
]])


m4_ifelse(M4_YY_PREFIX,yy,,
    M4_GEN_PREFIX(`alloc')
    M4_GEN_PREFIX(`realloc')
    M4_GEN_PREFIX(`free')
)

%if-c-only
m4_ifelse(M4_YY_PREFIX,yy,,
m4_ifdef( [[M4_YY_NOT_REENTRANT]],
[[
    M4_GEN_PREFIX(`text')
    M4_GEN_PREFIX(`leng')
    M4_GEN_PREFIX(`in')
    M4_GEN_PREFIX(`out')
    M4_GEN_PREFIX(`_flex_debug')
    M4_GEN_PREFIX(`lineno')
]])
)
%endif


m4_ifdef( [[M4_YY_TABLES_EXTERNAL]],
[[
    M4_GEN_PREFIX(`tables_fload')
    M4_GEN_PREFIX(`tables_destroy')
    M4_GEN_PREFIX(`TABLES_NAME')
]])

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

#if defined(__FreeBSD__)
#include <sys/cdefs.h>
#else
#define __dead2
#endif

/* begin standard C headers. */
%if-c-only
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
%endif

%if-tables-serialization
#include <sys/types.h>
#include <netinet/in.h>
%endif
/* end standard C headers. */

%if-c-or-c++
m4preproc_include(`flexint.h')
%endif

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

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

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

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

%not-for-header
/* Promotes a possibly negative, possibly signed char to an
 *   integer in range [0..255] for use as an array index.
 */
#define YY_SC_TO_UI(c) ((YY_CHAR) (c))
%ok-for-header



%if-reentrant

/* An opaque pointer. */
#ifndef YY_TYPEDEF_YY_SCANNER_T
#define YY_TYPEDEF_YY_SCANNER_T
typedef void* yyscan_t;
#endif

%# Declare yyguts variable
m4_define( [[M4_YY_DECL_GUTS_VAR]], [[struct yyguts_t * yyg = (struct yyguts_t*)yyscanner]])
%# Perform a noop access on yyguts to prevent unused variable complains
m4_define( [[M4_YY_NOOP_GUTS_VAR]], [[(void)yyg]])
%# For use wherever a Global is accessed or assigned.
m4_define( [[YY_G]], [[yyg->$1]])

%# For use in function prototypes to append the additional argument.
m4_define( [[M4_YY_PROTO_LAST_ARG]],  [[, yyscan_t yyscanner]])
m4_define( [[M4_YY_PROTO_ONLY_ARG]],  [[yyscan_t yyscanner]])

m4_define( [[M4_YY_DEF_LAST_ARG]],  [[, yyscan_t yyscanner]])
m4_define( [[M4_YY_DEF_ONLY_ARG]],  [[yyscan_t yyscanner]])
m4_define( [[M4_YY_DECL_LAST_ARG]],  [[yyscan_t yyscanner;]])

%# For use in function calls to pass the additional argument.
m4_define( [[M4_YY_CALL_LAST_ARG]], [[, yyscanner]])
m4_define( [[M4_YY_CALL_ONLY_ARG]], [[yyscanner]])

%# For use in function documentation to adjust for additional argument.
m4_define( [[M4_YY_DOC_PARAM]], [[@param yyscanner The scanner object.]])

/* For convenience, these vars (plus the bison vars far below)
   are macros in the reentrant scanner. */
#define yyin YY_G(yyin_r)
#define yyout YY_G(yyout_r)
#define yyextra YY_G(yyextra_r)
#define yyleng YY_G(yyleng_r)
#define yytext YY_G(yytext_r)
#define yylineno (YY_CURRENT_BUFFER_LVALUE->yy_bs_lineno)
#define yycolumn (YY_CURRENT_BUFFER_LVALUE->yy_bs_column)
#define yy_flex_debug YY_G(yy_flex_debug_r)

m4_define( [[M4_YY_INCR_LINENO]],
[[
    do{ yylineno++;
        yycolumn=0;
    }while(0)
]])

%endif



%if-not-reentrant

m4_define( [[M4_YY_INCR_LINENO]],
[[
    yylineno++;
]])

%# Define these macros to be no-ops.
m4_define( [[M4_YY_DECL_GUTS_VAR]], [[m4_dnl]])
m4_define( [[M4_YY_NOOP_GUTS_VAR]], [[m4_dnl]])
m4_define( [[YY_G]], [[($1)]])
m4_define( [[M4_YY_PROTO_LAST_ARG]])
m4_define( [[M4_YY_PROTO_ONLY_ARG]],  [[void]])
m4_define( [[M4_YY_DEF_LAST_ARG]])

m4_define( [[M4_YY_DEF_ONLY_ARG]],  [[void]])
m4_define([[M4_YY_DECL_LAST_ARG]])
m4_define([[M4_YY_CALL_LAST_ARG]])
m4_define([[M4_YY_CALL_ONLY_ARG]])
m4_define( [[M4_YY_DOC_PARAM]], )

%endif


%# Generate C99 function defs.
m4_define( [[YYFARGS1]], [[($1 $2 M4_YY_DEF_LAST_ARG)]])
m4_define( [[YYFARGS2]], [[($1 $2, $3 $4 M4_YY_DEF_LAST_ARG)]])
m4_define( [[YYFARGS3]], [[($1 $2, $3 $4, $5 $6 M4_YY_DEF_LAST_ARG)]])

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* 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_G(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_G(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 M4_YY_CALL_LAST_ARG )
#define YY_END_OF_BUFFER_CHAR 0
]])

/* Size of default input buffer. */
#ifndef YY_BUF_SIZE
#ifdef __ia64__
/* On IA-64, the buffer size is 16k, not 8k.
 * Moreover, YY_BUF_SIZE is 2*YY_READ_BUF_SIZE in the general case.
 * Ditto for the __ia64__ case accordingly.
 */
#define YY_BUF_SIZE 32768
#else
#define YY_BUF_SIZE 16384
#endif /* __ia64__ */
#endif

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* The state buf must be large enough to hold one state per character in the main buffer.
 */
#define YY_STATE_BUF_SIZE   ((YY_BUF_SIZE + 2) * sizeof(yy_state_type))
]])


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

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

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

%if-c-only
%if-not-reentrant
extern FILE *yyin, *yyout;
%endif
%endif

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
#define EOB_ACT_CONTINUE_SCAN 0
#define EOB_ACT_END_OF_FILE 1
#define EOB_ACT_LAST_MATCH 2
    m4_ifdef( [[M4_YY_USE_LINENO]],
    [[
    /* Note: We specifically omit the test for yy_rule_can_match_eol because it requires
     *       access to the local variable yy_act. Since yyless() is a macro, it would break
     *       existing scanners that call yyless() from OUTSIDE yylex.
     *       One obvious solution it to make yy_act a global. I tried that, and saw
     *       a 5% performance hit in a non-yylineno scanner, because yy_act is
     *       normally declared as a register variable-- so it is not worth it.
     */
    #define  YY_LESS_LINENO(n) \
            do { \
                int yyl;\
                for ( yyl = n; yyl < yyleng; ++yyl )\
                    if ( yytext[yyl] == '\n' )\
                        --yylineno;\
            }while(0)
    #define YY_LINENO_REWIND_TO(dst) \
            do {\
                const char *p;\
                for ( p = yy_cp-1; p >= (dst); --p)\
                    if ( *p == '\n' )\
                        --yylineno;\
            }while(0)
    ]],
    [[
    #define YY_LESS_LINENO(n)
    #define YY_LINENO_REWIND_TO(ptr)
    ]])
/* Return all but the first "n" matched characters back to the input stream. */
#define yyless(n) \
        do \
                { \
                /* Undo effects of setting up yytext. */ \
        int yyless_macro_arg = (n); \
        YY_LESS_LINENO(yyless_macro_arg);\
                *yy_cp = YY_G(yy_hold_char); \
                YY_RESTORE_YY_MORE_OFFSET \
                YY_G(yy_c_buf_p) = yy_cp = yy_bp + yyless_macro_arg - YY_MORE_ADJ; \
                YY_DO_BEFORE_ACTION; /* set up yytext again */ \
                } \
        while ( 0 )
#define unput(c) yyunput( c, YY_G(yytext_ptr) M4_YY_CALL_LAST_ARG )
]])

#ifndef YY_STRUCT_YY_BUFFER_STATE
#define YY_STRUCT_YY_BUFFER_STATE
struct yy_buffer_state
        {
%if-c-only
        FILE *yy_input_file;
%endif

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


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

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

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

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

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

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

    int yy_bs_lineno; /**< The line count. */
    int yy_bs_column; /**< The column count. */


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

        int yy_buffer_status;
m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
#define YY_BUFFER_NEW 0
#define YY_BUFFER_NORMAL 1
        /* When an EOF's been seen but there's still some text to process
         * then we mark the buffer as YY_EOF_PENDING, to indicate that we
         * shouldn't try reading from the input source any more.  We might
         * still have a bunch of tokens to match, though, because of
         * possible backing-up.
         *
         * When we actually see the EOF, we change the status to "new"
         * (via yyrestart()), so that the user can continue scanning by
         * just pointing yyin at a new input file.
         */
#define YY_BUFFER_EOF_PENDING 2
]])
        };
#endif /* !YY_STRUCT_YY_BUFFER_STATE */

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

/* Stack of input buffers. */
static size_t yy_buffer_stack_top = 0; /**< index of top of stack. */
static size_t yy_buffer_stack_max = 0; /**< capacity of stack. */
static YY_BUFFER_STATE * yy_buffer_stack = NULL; /**< Stack as an array. */
%endif
%ok-for-header
%endif

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* We provide macros for accessing buffer states in case in the
 * future we want to put the buffer states in a more general
 * "scanner state".
 *
 * Returns the top of the stack, or NULL.
 */
#define YY_CURRENT_BUFFER ( YY_G(yy_buffer_stack) \
                          ? YY_G(yy_buffer_stack)[YY_G(yy_buffer_stack_top)] \
                          : NULL)
#define yy_current_buffer YY_CURRENT_BUFFER
/* Same as previous macro, but useful when we know that the buffer stack is not
 * NULL or when we need an lvalue. For internal use only.
 */
#define YY_CURRENT_BUFFER_LVALUE YY_G(yy_buffer_stack)[YY_G(yy_buffer_stack_top)]
]])

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

%if-not-reentrant
%not-for-header
/* 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 = NULL;
static int yy_init = 0;         /* 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;
%ok-for-header
%endif

void yyrestart ( FILE *input_file M4_YY_PROTO_LAST_ARG );
void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer M4_YY_PROTO_LAST_ARG );
YY_BUFFER_STATE yy_create_buffer ( FILE *file, int size M4_YY_PROTO_LAST_ARG );
void yy_delete_buffer ( YY_BUFFER_STATE b M4_YY_PROTO_LAST_ARG );
void yy_flush_buffer ( YY_BUFFER_STATE b M4_YY_PROTO_LAST_ARG );
void yypush_buffer_state ( YY_BUFFER_STATE new_buffer M4_YY_PROTO_LAST_ARG );
void yypop_buffer_state ( M4_YY_PROTO_ONLY_ARG );

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
static void yyensure_buffer_stack ( M4_YY_PROTO_ONLY_ARG );
static void yy_load_buffer_state ( M4_YY_PROTO_ONLY_ARG );
static void yy_init_buffer ( YY_BUFFER_STATE b, FILE *file M4_YY_PROTO_LAST_ARG );
#define YY_FLUSH_BUFFER yy_flush_buffer( YY_CURRENT_BUFFER M4_YY_CALL_LAST_ARG)
]])

YY_BUFFER_STATE yy_scan_buffer ( char *base, yy_size_t size M4_YY_PROTO_LAST_ARG );
YY_BUFFER_STATE yy_scan_string ( const char *yy_str M4_YY_PROTO_LAST_ARG );
YY_BUFFER_STATE yy_scan_bytes ( const char *bytes, int len M4_YY_PROTO_LAST_ARG );

%endif

void *yyalloc ( yy_size_t M4_YY_PROTO_LAST_ARG );
void *yyrealloc ( void *, yy_size_t M4_YY_PROTO_LAST_ARG );
void yyfree ( void * M4_YY_PROTO_LAST_ARG );

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
#define yy_new_buffer yy_create_buffer
#define yy_set_interactive(is_interactive) \
        { \
        if ( ! YY_CURRENT_BUFFER ){ \
        yyensure_buffer_stack (M4_YY_CALL_ONLY_ARG); \
                YY_CURRENT_BUFFER_LVALUE =    \
            yy_create_buffer( yyin, YY_BUF_SIZE M4_YY_CALL_LAST_ARG); \
        } \
        YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
        }
#define yy_set_bol(at_bol) \
        { \
        if ( ! YY_CURRENT_BUFFER ){\
        yyensure_buffer_stack (M4_YY_CALL_ONLY_ARG); \
                YY_CURRENT_BUFFER_LVALUE =    \
            yy_create_buffer( yyin, YY_BUF_SIZE M4_YY_CALL_LAST_ARG); \
        } \
        YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
        }
#define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
]])

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

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
%% [1.5] DFA
]])

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

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
static yy_state_type yy_get_previous_state ( M4_YY_PROTO_ONLY_ARG );
static yy_state_type yy_try_NUL_trans ( yy_state_type current_state  M4_YY_PROTO_LAST_ARG);
static int yy_get_next_buffer ( M4_YY_PROTO_ONLY_ARG );
static void yynoreturn yy_fatal_error ( const char* msg M4_YY_PROTO_LAST_ARG ) __dead2;
]])

%endif

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* Done after the current pattern has been matched and before the
 * corresponding action - sets up yytext.
 */
#define YY_DO_BEFORE_ACTION \
        YY_G(yytext_ptr) = yy_bp; \
%% [2.0] code to fiddle yytext and yyleng for yymore() goes here \
        YY_G(yy_hold_char) = *yy_cp; \
        *yy_cp = '\0'; \
%% [3.0] code to copy yytext_ptr to yytext[] goes here, if %array \
        YY_G(yy_c_buf_p) = yy_cp;
%% [4.0] data tables for the DFA and the user's section 1 definitions go here
]])

m4_ifdef( [[M4_YY_IN_HEADER]], [[#ifdef YY_HEADER_EXPORT_START_CONDITIONS]])
M4_YY_SC_DEFS
m4_ifdef( [[M4_YY_IN_HEADER]], [[#endif]])

m4_ifdef( [[M4_YY_NO_UNISTD_H]],,
[[
#ifndef YY_NO_UNISTD_H
/* Special case for "unistd.h", since it is non-ANSI. We include it way
 * down here because we want the user's section 1 to have been scanned first.
 * The user has a chance to override it with an option.
 */
%if-c-only
#include <unistd.h>
%endif
%if-c++-only
#include <unistd.h>
%endif
#endif
]])

m4_ifdef( [[M4_EXTRA_TYPE_DEFS]],
[[
#define YY_EXTRA_TYPE M4_EXTRA_TYPE_DEFS
]],
[[
#ifndef YY_EXTRA_TYPE
#define YY_EXTRA_TYPE void *
#endif
]]
)

%if-c-only Reentrant structure and macros (non-C++).
%if-reentrant

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* Holds the entire state of the reentrant scanner. */
struct yyguts_t
    {

    /* User-defined. Not touched by flex. */
    YY_EXTRA_TYPE yyextra_r;

    /* The rest are the same as the globals declared in the non-reentrant scanner. */
    FILE *yyin_r, *yyout_r;
    size_t yy_buffer_stack_top; /**< index of top of stack. */
    size_t yy_buffer_stack_max; /**< capacity of stack. */
    YY_BUFFER_STATE * yy_buffer_stack; /**< Stack as an array. */
    char yy_hold_char;
    int yy_n_chars;
    int yyleng_r;
    char *yy_c_buf_p;
    int yy_init;
    int yy_start;
    int yy_did_buffer_switch_on_eof;
    int yy_start_stack_ptr;
    int yy_start_stack_depth;
    int *yy_start_stack;
    yy_state_type yy_last_accepting_state;
    char* yy_last_accepting_cpos;

    int yylineno_r;
    int yy_flex_debug_r;

m4_ifdef( [[M4_YY_USES_REJECT]],
[[
    yy_state_type *yy_state_buf;
    yy_state_type *yy_state_ptr;
    char *yy_full_match;
    int yy_lp;

    /* These are only needed for trailing context rules,
     * but there's no conditional variable for that yet. */
    int yy_looking_for_trail_begin;
    int yy_full_lp;
    int *yy_full_state;
]])

m4_ifdef( [[M4_YY_TEXT_IS_ARRAY]],
[[
    char yytext_r[YYLMAX];
    char *yytext_ptr;
    int yy_more_offset;
    int yy_prev_more_offset;
]],
[[
    char *yytext_r;
    int yy_more_flag;
    int yy_more_len;
]])

m4_ifdef( [[M4_YY_BISON_LVAL]],
[[
    YYSTYPE * yylval_r;
]])

m4_ifdef( [[<M4_YY_BISON_LLOC>]],
[[
    YYLTYPE * yylloc_r;
]])

    }; /* end struct yyguts_t */
]])


%if-c-only
m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
static int yy_init_globals ( M4_YY_PROTO_ONLY_ARG );
]])
%endif

%if-reentrant

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
    m4_ifdef( [[M4_YY_BISON_LVAL]],
    [[
    /* This must go here because YYSTYPE and YYLTYPE are included
     * from bison output in section 1.*/
    #    define yylval YY_G(yylval_r)
    ]])

    m4_ifdef( [[<M4_YY_BISON_LLOC>]],
    [[
    #    define yylloc YY_G(yylloc_r)
    ]])
]])

int yylex_init (yyscan_t* scanner);

int yylex_init_extra ( YY_EXTRA_TYPE user_defined, yyscan_t* scanner);

%endif

%endif End reentrant structures and macros.

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

m4_ifdef( [[M4_YY_NO_DESTROY]],,
[[
int yylex_destroy ( M4_YY_PROTO_ONLY_ARG );
]])

m4_ifdef( [[M4_YY_NO_GET_DEBUG]],,
[[
int yyget_debug ( M4_YY_PROTO_ONLY_ARG );
]])

m4_ifdef( [[M4_YY_NO_SET_DEBUG]],,
[[
void yyset_debug ( int debug_flag M4_YY_PROTO_LAST_ARG );
]])

m4_ifdef( [[M4_YY_NO_GET_EXTRA]],,
[[
YY_EXTRA_TYPE yyget_extra ( M4_YY_PROTO_ONLY_ARG );
]])

m4_ifdef( [[M4_YY_NO_SET_EXTRA]],,
[[
void yyset_extra ( YY_EXTRA_TYPE user_defined M4_YY_PROTO_LAST_ARG );
]])

m4_ifdef( [[M4_YY_NO_GET_IN]],,
[[
FILE *yyget_in ( M4_YY_PROTO_ONLY_ARG );
]])

m4_ifdef( [[M4_YY_NO_SET_IN]],,
[[
void yyset_in  ( FILE * _in_str M4_YY_PROTO_LAST_ARG );
]])

m4_ifdef( [[M4_YY_NO_GET_OUT]],,
[[
FILE *yyget_out ( M4_YY_PROTO_ONLY_ARG );
]])

m4_ifdef( [[M4_YY_NO_SET_OUT]],,
[[
void yyset_out  ( FILE * _out_str M4_YY_PROTO_LAST_ARG );
]])

m4_ifdef( [[M4_YY_NO_GET_LENG]],,
[[
                        int yyget_leng ( M4_YY_PROTO_ONLY_ARG );
]])

m4_ifdef( [[M4_YY_NO_GET_TEXT]],,
[[
char *yyget_text ( M4_YY_PROTO_ONLY_ARG );
]])

m4_ifdef( [[M4_YY_NO_GET_LINENO]],,
[[
int yyget_lineno ( M4_YY_PROTO_ONLY_ARG );
]])

m4_ifdef( [[M4_YY_NO_SET_LINENO]],,
[[
void yyset_lineno ( int _line_number M4_YY_PROTO_LAST_ARG );
]])

m4_ifdef( [[M4_YY_REENTRANT]],
[[
m4_ifdef( [[M4_YY_NO_GET_COLUMN]],,
[[
int yyget_column  ( M4_YY_PROTO_ONLY_ARG );
]])
]])

m4_ifdef( [[M4_YY_REENTRANT]],
[[
m4_ifdef( [[M4_YY_NO_SET_COLUMN]],,
[[
void yyset_column ( int _column_no M4_YY_PROTO_LAST_ARG );
]])
]])

%if-bison-bridge
m4_ifdef( [[M4_YY_NO_GET_LVAL]],,
[[
YYSTYPE * yyget_lval ( M4_YY_PROTO_ONLY_ARG );
]])

void yyset_lval ( YYSTYPE * yylval_param M4_YY_PROTO_LAST_ARG );

m4_ifdef( [[<M4_YY_BISON_LLOC>]],
[[
    m4_ifdef( [[M4_YY_NO_GET_LLOC]],,
    [[
       YYLTYPE *yyget_lloc ( M4_YY_PROTO_ONLY_ARG );
    ]])

    m4_ifdef( [[M4_YY_NO_SET_LLOC]],,
    [[
        void yyset_lloc ( YYLTYPE * yylloc_param M4_YY_PROTO_LAST_ARG );
    ]])
]])
%endif

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

#ifndef YY_SKIP_YYWRAP
#ifdef __cplusplus
extern "C" int yywrap ( M4_YY_PROTO_ONLY_ARG );
#else
extern int yywrap ( M4_YY_PROTO_ONLY_ARG );
#endif
#endif

%not-for-header
#ifndef YY_NO_UNPUT
    m4_ifdef( [[M4_YY_NO_UNPUT]],,
    [[
    static void yyunput ( int c, char *buf_ptr  M4_YY_PROTO_LAST_ARG);
    ]])
#endif
%ok-for-header
%endif

#ifndef yytext_ptr
static void yy_flex_strncpy ( char *, const char *, int M4_YY_PROTO_LAST_ARG);
#endif

#ifdef YY_NEED_STRLEN
static int yy_flex_strlen ( const char * M4_YY_PROTO_LAST_ARG);
#endif

#ifndef YY_NO_INPUT
%if-c-only Standard (non-C++) definition
%not-for-header
#ifdef __cplusplus
static int yyinput ( M4_YY_PROTO_ONLY_ARG );
#else
static int input ( M4_YY_PROTO_ONLY_ARG );
#endif
%ok-for-header
%endif
#endif


%if-c-only
%# TODO: This is messy.
m4_ifdef( [[M4_YY_STACK_USED]],
[[

m4_ifdef( [[M4_YY_NOT_REENTRANT]],
[[
    m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
    [[
        static int yy_start_stack_ptr = 0;
        static int yy_start_stack_depth = 0;
        static int *yy_start_stack = NULL;
    ]])
]])

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
    m4_ifdef( [[M4_YY_NO_PUSH_STATE]],,
    [[
    static void yy_push_state ( int _new_state M4_YY_PROTO_LAST_ARG);
    ]])
    m4_ifdef( [[M4_YY_NO_POP_STATE]],,
    [[
    static void yy_pop_state ( M4_YY_PROTO_ONLY_ARG );
    ]])
    m4_ifdef( [[M4_YY_NO_TOP_STATE]],,
    [[
    static int yy_top_state ( M4_YY_PROTO_ONLY_ARG );
    ]])
]])

]],
[[
m4_define( [[M4_YY_NO_PUSH_STATE]])
m4_define( [[M4_YY_NO_POP_STATE]])
m4_define( [[M4_YY_NO_TOP_STATE]])
]])
%endif

/* Amount of stuff to slurp up with each read. */
#ifndef YY_READ_BUF_SIZE
#ifdef __ia64__
/* On IA-64, the buffer size is 16k, not 8k */
#define YY_READ_BUF_SIZE 16384
#else
#define YY_READ_BUF_SIZE 8192
#endif /* __ia64__ */
#endif

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* Copy whatever the last rule matched to the standard output. */
#ifndef ECHO
%if-c-only Standard (non-C++) definition
/* This used to be an fputs(), but since the string might contain NUL's,
 * we now use fwrite().
 */
#define ECHO do { if (fwrite( yytext, (size_t) yyleng, 1, yyout )) {} } while (0)
%endif
%if-c++-only C++ definition
#define ECHO LexerOutput( yytext, yyleng )
%endif
#endif
]])

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
 * is returned in "result".
 */
#ifndef YY_INPUT
#define YY_INPUT(buf,result,max_size) \
%% [5.0] fread()/read() definition of YY_INPUT goes here unless we're doing C++ \
\
%if-c++-only C++ definition \
        if ( (int)(result = LexerInput( (char *) buf, max_size )) < 0 ) \
                YY_FATAL_ERROR( "input in flex scanner failed" );
%endif

#endif
]])

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* 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

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* Report a fatal error. */
#ifndef YY_FATAL_ERROR
%if-c-only
#define YY_FATAL_ERROR(msg) yy_fatal_error( msg M4_YY_CALL_LAST_ARG)
%endif
%if-c++-only
#define YY_FATAL_ERROR(msg) LexerError( msg )
%endif
#endif
]])

%if-tables-serialization structures and prototypes
m4preproc_include(`tables_shared.h')

/* Load the DFA tables from the given stream.  */
int yytables_fload (FILE * fp M4_YY_PROTO_LAST_ARG);

/* Unload the tables from memory. */
int yytables_destroy (M4_YY_PROTO_ONLY_ARG);
%not-for-header

/** Describes a mapping from a serialized table id to its deserialized state in
 * this scanner.  This is the bridge between our "generic" deserialization code
 * and the specifics of this scanner.
 */
struct yytbl_dmap {
        enum yytbl_id dm_id;/**< table identifier */
        void  **dm_arr;         /**< address of pointer to store the deserialized table. */
        size_t  dm_sz;          /**< local sizeof() each element in table. */
};

/** A {0,0,0}-terminated list of structs, forming the map */
static struct yytbl_dmap yydmap[] =
{
%tables-yydmap generated elements
    {0,0,0}
};

/** A tables-reader object to maintain some state in the read. */
struct yytbl_reader {
    FILE * fp; /**< input stream */
    flex_uint32_t bread; /**< bytes read since beginning of current tableset */
};

%endif
/* end tables serialization structures and prototypes */

%ok-for-header

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


m4_define( [[M4_YY_LEX_PROTO]], [[(M4_YY_PROTO_ONLY_ARG)]])
m4_define( [[M4_YY_LEX_DECLARATION]], [[(M4_YY_DEF_ONLY_ARG)]])

m4_ifdef( [[M4_YY_BISON_LVAL]],
[[
    m4_dnl  The bison pure parser is used. Redefine yylex to
    m4_dnl  accept the lval parameter.

    m4_define( [[M4_YY_LEX_PROTO]], [[\]]
               [[(YYSTYPE * yylval_param M4_YY_PROTO_LAST_ARG)]])
    m4_define( [[M4_YY_LEX_DECLARATION]], [[\]]
               [[YYFARGS1(YYSTYPE *,yylval_param)]])
]])

m4_ifdef( [[<M4_YY_BISON_LLOC>]],
[[
    m4_dnl  Locations are used. yylex should also accept the ylloc parameter.

    m4_define( [[M4_YY_LEX_PROTO]], [[\]]
               [[(YYSTYPE * yylval_param, YYLTYPE * yylloc_param M4_YY_PROTO_LAST_ARG)]])
    m4_define( [[M4_YY_LEX_DECLARATION]], [[\]]
               [[YYFARGS2(YYSTYPE *,yylval_param, YYLTYPE *,yylloc_param)]])
]])

extern int yylex M4_YY_LEX_PROTO;

#define YY_DECL int yylex M4_YY_LEX_DECLARATION
%endif
%if-c++-only C++ definition
#define YY_DECL int yyFlexLexer::yylex()
%endif
#endif /* !YY_DECL */

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* 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
]])

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* Code executed at the end of each rule. */
#ifndef YY_BREAK
#define YY_BREAK /*LINTED*/break;
#endif
]])

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
%% [6.0] YY_RULE_SETUP definition goes here
]])

%not-for-header
/** The main scanner function which does all the work.
 */
YY_DECL
{
        yy_state_type yy_current_state;
        char *yy_cp, *yy_bp;
        int yy_act;
    M4_YY_DECL_GUTS_VAR();

m4_ifdef( [[M4_YY_NOT_REENTRANT]],
[[
    m4_ifdef( [[M4_YY_BISON_LVAL]],
    [[
        YYSTYPE * yylval;
    ]])
    m4_ifdef( [[<M4_YY_BISON_LLOC>]],
    [[
        YYLTYPE * yylloc;
    ]])
]])

m4_ifdef( [[M4_YY_BISON_LVAL]],
[[
    yylval = yylval_param;
]])

m4_ifdef( [[<M4_YY_BISON_LLOC>]],
[[
    yylloc = yylloc_param;
]])

        if ( !YY_G(yy_init) )
                {
                YY_G(yy_init) = 1;

#ifdef YY_USER_INIT
                YY_USER_INIT;
#endif

m4_ifdef( [[M4_YY_USES_REJECT]],
[[
        /* Create the reject buffer large enough to save one state per allowed character. */
        if ( ! YY_G(yy_state_buf) )
            YY_G(yy_state_buf) = (yy_state_type *)yyalloc(YY_STATE_BUF_SIZE  M4_YY_CALL_LAST_ARG);
            if ( ! YY_G(yy_state_buf) )
                YY_FATAL_ERROR( "out of dynamic memory in yylex()" );
]])

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

                if ( ! yyin )
%if-c-only
                        yyin = stdin;
%endif
%if-c++-only
                        yyin.rdbuf(std::cin.rdbuf());
%endif

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

                if ( ! YY_CURRENT_BUFFER ) {
                        yyensure_buffer_stack (M4_YY_CALL_ONLY_ARG);
                        YY_CURRENT_BUFFER_LVALUE =
                                yy_create_buffer( yyin, YY_BUF_SIZE M4_YY_CALL_LAST_ARG);
                }

                yy_load_buffer_state( M4_YY_CALL_ONLY_ARG );
                }

        {
%% [7.0] user's declarations go here

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

                /* Support of yytext. */
                *yy_cp = YY_G(yy_hold_char);

                /* yy_bp points to the position in yy_ch_buf of the start of
                 * the current run.
                 */
                yy_bp = yy_cp;

%% [9.0] code to set up and find next match goes here

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

                YY_DO_BEFORE_ACTION;

%% [11.0] code for yylineno update goes here

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

%% [12.0] debug code goes here

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

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

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

                if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_NEW )
                        {
                        /* We're scanning a new file or input source.  It's
                         * possible that this happened because the user
                         * just pointed yyin at a new source and called
                         * yylex().  If so, then we have to assure
                         * consistency between YY_CURRENT_BUFFER and our
                         * globals.  Here is the right place to do so, because
                         * this is the first action (other than possibly a
                         * back-up) that will match for the new input source.
                         */
                        YY_G(yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
%if-c-only
                        YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin;
%endif
%if-c++-only
                        YY_CURRENT_BUFFER_LVALUE->yy_input_file = yyin.rdbuf();
%endif
                        YY_CURRENT_BUFFER_LVALUE->yy_buffer_status = YY_BUFFER_NORMAL;
                        }

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

                        YY_G(yy_c_buf_p) = YY_G(yytext_ptr) + yy_amount_of_matched_text;

                        yy_current_state = yy_get_previous_state( M4_YY_CALL_ONLY_ARG );

                        /* 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 M4_YY_CALL_LAST_ARG);

                        yy_bp = YY_G(yytext_ptr) + YY_MORE_ADJ;

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

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

                else switch ( yy_get_next_buffer( M4_YY_CALL_ONLY_ARG ) )
                        {
                        case EOB_ACT_END_OF_FILE:
                                {
                                YY_G(yy_did_buffer_switch_on_eof) = 0;

                                if ( yywrap( M4_YY_CALL_ONLY_ARG ) )
                                        {
                                        /* 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_G(yy_c_buf_p) = YY_G(yytext_ptr) + YY_MORE_ADJ;

                                        yy_act = YY_STATE_EOF(YY_START);
                                        goto do_action;
                                        }

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

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

                                yy_current_state = yy_get_previous_state( M4_YY_CALL_ONLY_ARG );

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

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

                                yy_current_state = yy_get_previous_state( M4_YY_CALL_ONLY_ARG );

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

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

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

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

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

        yy_did_buffer_switch_on_eof = 0;

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

        yy_start_stack_ptr = yy_start_stack_depth = 0;
        yy_start_stack = NULL;

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


m4_ifdef( [[M4_YY_USES_REJECT]],
[[
        yy_state_buf = new yy_state_type[YY_STATE_BUF_SIZE];
]],
[[
        yy_state_buf = 0;
]])
}

/* The contents of this function are C++ specific, so the YY_G macro is not used.
 */
yyFlexLexer::~yyFlexLexer()
{
        delete [] yy_state_buf;
        yyfree( yy_start_stack M4_YY_CALL_LAST_ARG );
        yy_delete_buffer( YY_CURRENT_BUFFER M4_YY_CALL_LAST_ARG);
        yyfree( yy_buffer_stack M4_YY_CALL_LAST_ARG );
}

/* The contents of this function are C++ specific, so the YY_G macro is not used.
 */
void yyFlexLexer::switch_streams( std::istream& new_in, std::ostream& new_out )
{
        // was if( new_in )
        yy_delete_buffer( YY_CURRENT_BUFFER M4_YY_CALL_LAST_ARG);
        yy_switch_to_buffer( yy_create_buffer( new_in, YY_BUF_SIZE  M4_YY_CALL_LAST_ARG) M4_YY_CALL_LAST_ARG);

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

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

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

        switch_streams(*new_in, *new_out);
}

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

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

        if ( yyin.eof() )
                return 0;

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

        return 1;

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

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

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

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/* yy_get_next_buffer - try to read in a new buffer
 *
 * Returns a code representing an action:
 *      EOB_ACT_LAST_MATCH -
 *      EOB_ACT_CONTINUE_SCAN - continue scanning from current position
 *      EOB_ACT_END_OF_FILE - end of file
 */
%if-c-only
static int yy_get_next_buffer (M4_YY_DEF_ONLY_ARG)
%endif
%if-c++-only
int yyFlexLexer::yy_get_next_buffer()
%endif
{
    M4_YY_DECL_GUTS_VAR();
        char *dest = YY_CURRENT_BUFFER_LVALUE->yy_ch_buf;
        char *source = YY_G(yytext_ptr);
        int number_to_move, i;
        int ret_val;

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

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

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

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

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

                while ( num_to_read <= 0 )
                        { /* Not enough room in the buffer - grow it. */
m4_ifdef( [[M4_YY_USES_REJECT]],
[[
                        YY_FATAL_ERROR(
"input buffer overflow, can't enlarge buffer because scanner uses REJECT" );
]],
[[
                        /* just a shorter name for the current buffer */
                        YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE;

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

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

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

                                b->yy_ch_buf = (char *)
                                        /* Include room in for 2 EOB chars. */
                                        yyrealloc( (void *) b->yy_ch_buf,
                                                         (yy_size_t) (b->yy_buf_size + 2) M4_YY_CALL_LAST_ARG );
                                }
                        else
                                /* Can't grow it, we don't own it. */
                                b->yy_ch_buf = NULL;

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

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

                        num_to_read = YY_CURRENT_BUFFER_LVALUE->yy_buf_size -
                                                number_to_move - 1;
]])
                        }

                if ( num_to_read > YY_READ_BUF_SIZE )
                        num_to_read = YY_READ_BUF_SIZE;

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

                YY_CURRENT_BUFFER_LVALUE->yy_n_chars = YY_G(yy_n_chars);
                }

        if ( YY_G(yy_n_chars) == 0 )
                {
                if ( number_to_move == YY_MORE_ADJ )
                        {
                        ret_val = EOB_ACT_END_OF_FILE;
                        yyrestart( yyin  M4_YY_CALL_LAST_ARG);
                        }

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

        else
                ret_val = EOB_ACT_CONTINUE_SCAN;

        if ((YY_G(yy_n_chars) + number_to_move) > YY_CURRENT_BUFFER_LVALUE->yy_buf_size) {
                /* Extend the array by 50%, plus the number we really need. */
                int new_size = YY_G(yy_n_chars) + number_to_move + (YY_G(yy_n_chars) >> 1);
                YY_CURRENT_BUFFER_LVALUE->yy_ch_buf = (char *) yyrealloc(
                        (void *) YY_CURRENT_BUFFER_LVALUE->yy_ch_buf, (yy_size_t) new_size M4_YY_CALL_LAST_ARG );
                if ( ! YY_CURRENT_BUFFER_LVALUE->yy_ch_buf )
                        YY_FATAL_ERROR( "out of dynamic memory in yy_get_next_buffer()" );
                /* "- 2" to take care of EOB's */
                YY_CURRENT_BUFFER_LVALUE->yy_buf_size = (int) (new_size - 2);
        }

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

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

        return ret_val;
}
]])

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

%if-c-only
%not-for-header
    static yy_state_type yy_get_previous_state (M4_YY_DEF_ONLY_ARG)
%endif
%if-c++-only
    yy_state_type yyFlexLexer::yy_get_previous_state()
%endif
{
        yy_state_type yy_current_state;
        char *yy_cp;
    M4_YY_DECL_GUTS_VAR();

%% [15.0] code to get the start state into yy_current_state goes here

        for ( yy_cp = YY_G(yytext_ptr) + YY_MORE_ADJ; yy_cp < YY_G(yy_c_buf_p); ++yy_cp )
                {
%% [16.0] code to find the next state goes here
                }

        return yy_current_state;
}


/* yy_try_NUL_trans - try to make a transition on the NUL character
 *
 * synopsis
 *      next_state = yy_try_NUL_trans( current_state );
 */
%if-c-only
    static yy_state_type yy_try_NUL_trans  YYFARGS1( yy_state_type, yy_current_state)
%endif
%if-c++-only
    yy_state_type yyFlexLexer::yy_try_NUL_trans( yy_state_type yy_current_state )
%endif
{
        int yy_is_jam;
    M4_YY_DECL_GUTS_VAR(); /* This var may be unused depending upon options. */
%% [17.0] code to find the next state, and perhaps do backing up, goes here

        M4_YY_NOOP_GUTS_VAR();
        return yy_is_jam ? 0 : yy_current_state;
}


#ifndef YY_NO_UNPUT
%if-c-only
m4_ifdef( [[M4_YY_NO_UNPUT]],,
[[
    static void yyunput YYFARGS2( int,c, char *,yy_bp)
%endif
%if-c++-only
    void yyFlexLexer::yyunput( int c, char* yy_bp)
%endif
{
        char *yy_cp;
    M4_YY_DECL_GUTS_VAR();

    yy_cp = YY_G(yy_c_buf_p);

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

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

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

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

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

        *--yy_cp = (char) c;

%% [18.0] update yylineno here
m4_ifdef( [[M4_YY_USE_LINENO]],
[[
    if ( c == '\n' ){
        --yylineno;
    }
]])

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

%if-c-only
#ifndef YY_NO_INPUT
#ifdef __cplusplus
    static int yyinput (M4_YY_DEF_ONLY_ARG)
#else
    static int input  (M4_YY_DEF_ONLY_ARG)
#endif

%endif
%if-c++-only
    int yyFlexLexer::yyinput()
%endif
{
        int c;
    M4_YY_DECL_GUTS_VAR();

        *YY_G(yy_c_buf_p) = YY_G(yy_hold_char);

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

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

                        switch ( yy_get_next_buffer( M4_YY_CALL_ONLY_ARG ) )
                                {
                                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 M4_YY_CALL_LAST_ARG);

                                        /*FALLTHROUGH*/

                                case EOB_ACT_END_OF_FILE:
                                        {
                                        if ( yywrap( M4_YY_CALL_ONLY_ARG ) )
                                                return 0;

                                        if ( ! YY_G(yy_did_buffer_switch_on_eof) )
                                                YY_NEW_FILE;
#ifdef __cplusplus
                                        return yyinput(M4_YY_CALL_ONLY_ARG);
#else
                                        return input(M4_YY_CALL_ONLY_ARG);
#endif
                                        }

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

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

%% [19.0] update BOL and yylineno

        return c;
}
%if-c-only
#endif  /* ifndef YY_NO_INPUT */
%endif

/** Immediately switch to a different input stream.
 * @param input_file A readable stream.
 * M4_YY_DOC_PARAM
 * @note This function does not reset the start condition to @c INITIAL .
 */
%if-c-only
    void yyrestart  YYFARGS1( FILE *,input_file)
%endif
%if-c++-only
    void yyFlexLexer::yyrestart( std::istream& input_file )
%endif
{
    M4_YY_DECL_GUTS_VAR();

        if ( ! YY_CURRENT_BUFFER ){
        yyensure_buffer_stack (M4_YY_CALL_ONLY_ARG);
                YY_CURRENT_BUFFER_LVALUE =
            yy_create_buffer( yyin, YY_BUF_SIZE M4_YY_CALL_LAST_ARG);
        }

        yy_init_buffer( YY_CURRENT_BUFFER, input_file M4_YY_CALL_LAST_ARG);
        yy_load_buffer_state( M4_YY_CALL_ONLY_ARG );
}

%if-c++-only
/** Delegate to the new version that takes an istream reference.
 * @param input_file A readable stream.
 * M4_YY_DOC_PARAM
 * @note This function does not reset the start condition to @c INITIAL .
 */
void yyFlexLexer::yyrestart( std::istream* input_file )
{
        if( ! input_file ) {
                input_file = &yyin;
        }
        yyrestart( *input_file );
}
%endif

/** Switch to a different input buffer.
 * @param new_buffer The new input buffer.
 * M4_YY_DOC_PARAM
 */
%if-c-only
    void yy_switch_to_buffer  YYFARGS1( YY_BUFFER_STATE ,new_buffer)
%endif
%if-c++-only
    void yyFlexLexer::yy_switch_to_buffer( YY_BUFFER_STATE new_buffer )
%endif
{
    M4_YY_DECL_GUTS_VAR();

        /* TODO. We should be able to replace this entire function body
         * with
         *              yypop_buffer_state();
         *              yypush_buffer_state(new_buffer);
     */
        yyensure_buffer_stack (M4_YY_CALL_ONLY_ARG);
        if ( YY_CURRENT_BUFFER == new_buffer )
                return;

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

        YY_CURRENT_BUFFER_LVALUE = new_buffer;
        yy_load_buffer_state( M4_YY_CALL_ONLY_ARG );

        /* 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_G(yy_did_buffer_switch_on_eof) = 1;
}


%if-c-only
static void yy_load_buffer_state  (M4_YY_DEF_ONLY_ARG)
%endif
%if-c++-only
    void yyFlexLexer::yy_load_buffer_state()
%endif
{
    M4_YY_DECL_GUTS_VAR();
        YY_G(yy_n_chars) = YY_CURRENT_BUFFER_LVALUE->yy_n_chars;
        YY_G(yytext_ptr) = YY_G(yy_c_buf_p) = YY_CURRENT_BUFFER_LVALUE->yy_buf_pos;
%if-c-only
        yyin = YY_CURRENT_BUFFER_LVALUE->yy_input_file;
%endif
%if-c++-only
        yyin.rdbuf(YY_CURRENT_BUFFER_LVALUE->yy_input_file);
%endif
        YY_G(yy_hold_char) = *YY_G(yy_c_buf_p);
}

/** Allocate and initialize an input buffer state.
 * @param file A readable stream.
 * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
 * M4_YY_DOC_PARAM
 * @return the allocated buffer state.
 */
%if-c-only
    YY_BUFFER_STATE yy_create_buffer  YYFARGS2( FILE *,file, int ,size)
%endif
%if-c++-only
    YY_BUFFER_STATE yyFlexLexer::yy_create_buffer( std::istream& file, int size )
%endif
{
        YY_BUFFER_STATE b;
    m4_dnl M4_YY_DECL_GUTS_VAR();

        b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) M4_YY_CALL_LAST_ARG );
        if ( ! b )
                YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" );

        b->yy_buf_size = size;

        /* yy_ch_buf has to be 2 characters longer than the size given because
         * we need to put in 2 end-of-buffer characters.
         */
        b->yy_ch_buf = (char *) yyalloc( (yy_size_t) (b->yy_buf_size + 2) M4_YY_CALL_LAST_ARG );
        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 M4_YY_CALL_LAST_ARG);

        return b;
}

%if-c++-only
/** Delegate creation of buffers to the new version that takes an istream reference.
 * @param file A readable stream.
 * @param size The character buffer size in bytes. When in doubt, use @c YY_BUF_SIZE.
 * M4_YY_DOC_PARAM
 * @return the allocated buffer state.
 */
        YY_BUFFER_STATE yyFlexLexer::yy_create_buffer( std::istream* file, int size )
{
        return yy_create_buffer( *file, size );
}
%endif

/** Destroy the buffer.
 * @param b a buffer created with yy_create_buffer()
 * M4_YY_DOC_PARAM
 */
%if-c-only
    void yy_delete_buffer YYFARGS1( YY_BUFFER_STATE ,b)
%endif
%if-c++-only
    void yyFlexLexer::yy_delete_buffer( YY_BUFFER_STATE b )
%endif
{
    M4_YY_DECL_GUTS_VAR();

        if ( ! b )
                return;

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

        if ( b->yy_is_our_buffer )
                yyfree( (void *) b->yy_ch_buf M4_YY_CALL_LAST_ARG );

        yyfree( (void *) b M4_YY_CALL_LAST_ARG );
}


/* Initializes or reinitializes a buffer.
 * This function is sometimes called more than once on the same buffer,
 * such as during a yyrestart() or at EOF.
 */
%if-c-only
    static void yy_init_buffer  YYFARGS2( YY_BUFFER_STATE ,b, FILE *,file)
%endif
%if-c++-only
    void yyFlexLexer::yy_init_buffer( YY_BUFFER_STATE b, std::istream& file )
%endif

{
        int oerrno = errno;
    M4_YY_DECL_GUTS_VAR();

        yy_flush_buffer( b M4_YY_CALL_LAST_ARG);

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

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

%if-c-only
m4_ifdef( [[M4_YY_ALWAYS_INTERACTIVE]],
[[
        b->yy_is_interactive = 1;
]],
[[
    m4_ifdef( [[M4_YY_NEVER_INTERACTIVE]],
    [[
        b->yy_is_interactive = 0;
    ]],
    [[
        b->yy_is_interactive = file ? (isatty( fileno(file) ) > 0) : 0;
    ]])
]])
%endif
%if-c++-only
        b->yy_is_interactive = 0;
%endif
        errno = oerrno;
}

/** Discard all buffered characters. On the next scan, YY_INPUT will be called.
 * @param b the buffer state to be flushed, usually @c YY_CURRENT_BUFFER.
 * M4_YY_DOC_PARAM
 */
%if-c-only
    void yy_flush_buffer YYFARGS1( YY_BUFFER_STATE ,b)
%endif
%if-c++-only
    void yyFlexLexer::yy_flush_buffer( YY_BUFFER_STATE b )
%endif
{
    M4_YY_DECL_GUTS_VAR();
        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( M4_YY_CALL_ONLY_ARG );
}

%if-c-or-c++
/** Pushes the new state onto the stack. The new state becomes
 *  the current state. This function will allocate the stack
 *  if necessary.
 *  @param new_buffer The new state.
 *  M4_YY_DOC_PARAM
 */
%if-c-only
void yypush_buffer_state YYFARGS1(YY_BUFFER_STATE,new_buffer)
%endif
%if-c++-only
void yyFlexLexer::yypush_buffer_state (YY_BUFFER_STATE new_buffer)
%endif
{
    M4_YY_DECL_GUTS_VAR();
        if (new_buffer == NULL)
                return;

        yyensure_buffer_stack(M4_YY_CALL_ONLY_ARG);

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

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

        /* copied from yy_switch_to_buffer. */
        yy_load_buffer_state( M4_YY_CALL_ONLY_ARG );
        YY_G(yy_did_buffer_switch_on_eof) = 1;
}
%endif


%if-c-or-c++
/** Removes and deletes the top of the stack, if present.
 *  The next element becomes the new top.
 *  M4_YY_DOC_PARAM
 */
%if-c-only
void yypop_buffer_state (M4_YY_DEF_ONLY_ARG)
%endif
%if-c++-only
void yyFlexLexer::yypop_buffer_state (void)
%endif
{
    M4_YY_DECL_GUTS_VAR();
        if (!YY_CURRENT_BUFFER)
                return;

        yy_delete_buffer(YY_CURRENT_BUFFER M4_YY_CALL_LAST_ARG);
        YY_CURRENT_BUFFER_LVALUE = NULL;
        if (YY_G(yy_buffer_stack_top) > 0)
                --YY_G(yy_buffer_stack_top);

        if (YY_CURRENT_BUFFER) {
                yy_load_buffer_state( M4_YY_CALL_ONLY_ARG );
                YY_G(yy_did_buffer_switch_on_eof) = 1;
        }
}
%endif


%if-c-or-c++
/* Allocates the stack if it does not exist.
 *  Guarantees space for at least one push.
 */
%if-c-only
static void yyensure_buffer_stack (M4_YY_DEF_ONLY_ARG)
%endif
%if-c++-only
void yyFlexLexer::yyensure_buffer_stack(void)
%endif
{
        yy_size_t num_to_alloc;
    M4_YY_DECL_GUTS_VAR();

        if (!YY_G(yy_buffer_stack)) {

                /* First allocation is just for 2 elements, since we don't know if this
                 * scanner will even need a stack. We use 2 instead of 1 to avoid an
                 * immediate realloc on the next call.
         */
      num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
                YY_G(yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
                                                                (num_to_alloc * sizeof(struct yy_buffer_state*)
                                                                M4_YY_CALL_LAST_ARG);
                if ( ! YY_G(yy_buffer_stack) )
                        YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );


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

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

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

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

                num_to_alloc = YY_G(yy_buffer_stack_max) + grow_size;
                YY_G(yy_buffer_stack) = (struct yy_buffer_state**)yyrealloc
                                                                (YY_G(yy_buffer_stack),
                                                                num_to_alloc * sizeof(struct yy_buffer_state*)
                                                                M4_YY_CALL_LAST_ARG);
                if ( ! YY_G(yy_buffer_stack) )
                        YY_FATAL_ERROR( "out of dynamic memory in yyensure_buffer_stack()" );

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




m4_ifdef( [[M4_YY_NO_SCAN_BUFFER]],,
[[
%if-c-only
/** Setup the input buffer state to scan directly from a user-specified character buffer.
 * @param base the character buffer
 * @param size the size in bytes of the character buffer
 * M4_YY_DOC_PARAM
 * @return the newly allocated buffer state object.
 */
YY_BUFFER_STATE yy_scan_buffer  YYFARGS2( char *,base, yy_size_t ,size)
{
        YY_BUFFER_STATE b;
    m4_dnl M4_YY_DECL_GUTS_VAR();

        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 NULL;

        b = (YY_BUFFER_STATE) yyalloc( sizeof( struct yy_buffer_state ) M4_YY_CALL_LAST_ARG );
        if ( ! b )
                YY_FATAL_ERROR( "out of dynamic memory in yy_scan_buffer()" );

        b->yy_buf_size = (int) (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 = NULL;
        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 M4_YY_CALL_LAST_ARG );

        return b;
}
%endif
]])


m4_ifdef( [[M4_YY_NO_SCAN_STRING]],,
[[
%if-c-only
/** Setup the input buffer state to scan a string. The next call to yylex() will
 * scan from a @e copy of @a str.
 * @param yystr a NUL-terminated string to scan
 * M4_YY_DOC_PARAM
 * @return the newly allocated buffer state object.
 * @note If you want to scan bytes that may contain NUL values, then use
 *       yy_scan_bytes() instead.
 */
YY_BUFFER_STATE yy_scan_string YYFARGS1( const char *, yystr)
{
    m4_dnl M4_YY_DECL_GUTS_VAR();

        return yy_scan_bytes( yystr, (int) strlen(yystr) M4_YY_CALL_LAST_ARG);
}
%endif
]])


m4_ifdef( [[M4_YY_NO_SCAN_BYTES]],,
[[
%if-c-only
/** Setup the input buffer state to scan the given bytes. The next call to yylex() will
 * scan from a @e copy of @a bytes.
 * @param yybytes the byte buffer to scan
 * @param _yybytes_len the number of bytes in the buffer pointed to by @a bytes.
 * M4_YY_DOC_PARAM
 * @return the newly allocated buffer state object.
 */
YY_BUFFER_STATE yy_scan_bytes  YYFARGS2( const char *,yybytes, int ,_yybytes_len)
{
        YY_BUFFER_STATE b;
        char *buf;
        yy_size_t n;
        int i;
    m4_dnl M4_YY_DECL_GUTS_VAR();

        /* Get memory for full buffer, including space for trailing EOB's. */
        n = (yy_size_t) (_yybytes_len + 2);
        buf = (char *) yyalloc( n M4_YY_CALL_LAST_ARG );
        if ( ! buf )
                YY_FATAL_ERROR( "out of dynamic memory in yy_scan_bytes()" );

        for ( i = 0; i < _yybytes_len; ++i )
                buf[i] = yybytes[i];

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

        b = yy_scan_buffer( buf, n M4_YY_CALL_LAST_ARG);
        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
]])


m4_ifdef( [[M4_YY_NO_PUSH_STATE]],,
[[
%if-c-only
    static void yy_push_state YYFARGS1( int ,_new_state)
%endif
%if-c++-only
    void yyFlexLexer::yy_push_state( int _new_state )
%endif
{
    M4_YY_DECL_GUTS_VAR();
        if ( YY_G(yy_start_stack_ptr) >= YY_G(yy_start_stack_depth) )
                {
                yy_size_t new_size;

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

                if ( ! YY_G(yy_start_stack) )
                        YY_G(yy_start_stack) = (int *) yyalloc( new_size M4_YY_CALL_LAST_ARG );

                else
                        YY_G(yy_start_stack) = (int *) yyrealloc(
                                        (void *) YY_G(yy_start_stack), new_size M4_YY_CALL_LAST_ARG );

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

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

        BEGIN(_new_state);
}
]])


m4_ifdef( [[M4_YY_NO_POP_STATE]],,
[[
%if-c-only
    static void yy_pop_state  (M4_YY_DEF_ONLY_ARG)
%endif
%if-c++-only
    void yyFlexLexer::yy_pop_state()
%endif
{
    M4_YY_DECL_GUTS_VAR();
        if ( --YY_G(yy_start_stack_ptr) < 0 )
                YY_FATAL_ERROR( "start-condition stack underflow" );

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


m4_ifdef( [[M4_YY_NO_TOP_STATE]],,
[[
%if-c-only
    static int yy_top_state  (M4_YY_DEF_ONLY_ARG)
%endif
%if-c++-only
    int yyFlexLexer::yy_top_state()
%endif
{
    M4_YY_DECL_GUTS_VAR();
        return YY_G(yy_start_stack)[YY_G(yy_start_stack_ptr) - 1];
}
]])

#ifndef YY_EXIT_FAILURE
#define YY_EXIT_FAILURE 2
#endif

%if-c-only
static void yynoreturn yy_fatal_error YYFARGS1(const char*, msg)
{
        M4_YY_DECL_GUTS_VAR();
        M4_YY_NOOP_GUTS_VAR();
        fprintf( stderr, "%s\n", msg );
        exit( YY_EXIT_FAILURE );
}
%endif
%if-c++-only
void yyFlexLexer::LexerError( const char* msg )
{
    M4_YY_DECL_GUTS_VAR();
        std::cerr << msg << std::endl;
        exit( YY_EXIT_FAILURE );
}
%endif

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

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



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

%if-c-only
%if-reentrant
m4_ifdef( [[M4_YY_NO_GET_EXTRA]],,
[[
/** Get the user-defined data for this scanner.
 * M4_YY_DOC_PARAM
 */
YY_EXTRA_TYPE yyget_extra  (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();
    return yyextra;
}
]])
%endif

m4_ifdef( [[M4_YY_NO_GET_LINENO]],,
[[
/** Get the current line number.
 * M4_YY_DOC_PARAM
 */
int yyget_lineno  (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();

    m4_ifdef( [[M4_YY_REENTRANT]],
    [[
        if (! YY_CURRENT_BUFFER)
            return 0;
    ]])
    return yylineno;
}
]])

m4_ifdef( [[M4_YY_REENTRANT]],
[[
m4_ifdef( [[M4_YY_NO_GET_COLUMN]],,
[[
/** Get the current column number.
 * M4_YY_DOC_PARAM
 */
int yyget_column  (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();

    m4_ifdef( [[M4_YY_REENTRANT]],
    [[
        if (! YY_CURRENT_BUFFER)
            return 0;
    ]])
    return yycolumn;
}
]])
]])

m4_ifdef( [[M4_YY_NO_GET_IN]],,
[[
/** Get the input stream.
 * M4_YY_DOC_PARAM
 */
FILE *yyget_in  (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();
    return yyin;
}
]])

m4_ifdef( [[M4_YY_NO_GET_OUT]],,
[[
/** Get the output stream.
 * M4_YY_DOC_PARAM
 */
FILE *yyget_out  (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();
    return yyout;
}
]])

m4_ifdef( [[M4_YY_NO_GET_LENG]],,
[[
/** Get the length of the current token.
 * M4_YY_DOC_PARAM
 */
int yyget_leng  (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();
    return yyleng;
}
]])

/** Get the current token.
 * M4_YY_DOC_PARAM
 */
m4_ifdef( [[M4_YY_NO_GET_TEXT]],,
[[
char *yyget_text  (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();
    return yytext;
}
]])

%if-reentrant
m4_ifdef( [[M4_YY_NO_SET_EXTRA]],,
[[
/** Set the user-defined data. This data is never touched by the scanner.
 * @param user_defined The data to be associated with this scanner.
 * M4_YY_DOC_PARAM
 */
void yyset_extra YYFARGS1( YY_EXTRA_TYPE ,user_defined)
{
    M4_YY_DECL_GUTS_VAR();
    yyextra = user_defined ;
}
]])
%endif

m4_ifdef( [[M4_YY_NO_SET_LINENO]],,
[[
/** Set the current line number.
 * @param _line_number line number
 * M4_YY_DOC_PARAM
 */
void yyset_lineno YYFARGS1( int ,_line_number)
{
    M4_YY_DECL_GUTS_VAR();

    m4_ifdef( [[M4_YY_REENTRANT]],
    [[
        /* lineno is only valid if an input buffer exists. */
        if (! YY_CURRENT_BUFFER )
           YY_FATAL_ERROR( "yyset_lineno called with no buffer" );
    ]])
    yylineno = _line_number;
}
]])

m4_ifdef( [[M4_YY_REENTRANT]],
[[
m4_ifdef( [[M4_YY_NO_SET_COLUMN]],,
[[
/** Set the current column.
 * @param _column_no column number
 * M4_YY_DOC_PARAM
 */
void yyset_column YYFARGS1( int , _column_no)
{
    M4_YY_DECL_GUTS_VAR();

    m4_ifdef( [[M4_YY_REENTRANT]],
    [[
        /* column is only valid if an input buffer exists. */
        if (! YY_CURRENT_BUFFER )
           YY_FATAL_ERROR( "yyset_column called with no buffer" );
    ]])
    yycolumn = _column_no;
}
]])
]])


m4_ifdef( [[M4_YY_NO_SET_IN]],,
[[
/** Set the input stream. This does not discard the current
 * input buffer.
 * @param _in_str A readable stream.
 * M4_YY_DOC_PARAM
 * @see yy_switch_to_buffer
 */
void yyset_in YYFARGS1( FILE * ,_in_str)
{
    M4_YY_DECL_GUTS_VAR();
    yyin = _in_str ;
}
]])

m4_ifdef( [[M4_YY_NO_SET_OUT]],,
[[
void yyset_out YYFARGS1( FILE * ,_out_str)
{
    M4_YY_DECL_GUTS_VAR();
    yyout = _out_str ;
}
]])


m4_ifdef( [[M4_YY_NO_GET_DEBUG]],,
[[
int yyget_debug  (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();
    return yy_flex_debug;
}
]])

m4_ifdef( [[M4_YY_NO_SET_DEBUG]],,
[[
void yyset_debug YYFARGS1( int ,_bdebug)
{
    M4_YY_DECL_GUTS_VAR();
    yy_flex_debug = _bdebug ;
}
]])
%endif

%if-reentrant
/* Accessor methods for yylval and yylloc */

%if-bison-bridge
m4_ifdef( [[M4_YY_NO_GET_LVAL]],,
[[
YYSTYPE * yyget_lval  (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();
    return yylval;
}
]])

m4_ifdef( [[M4_YY_NO_SET_LVAL]],,
[[
void yyset_lval YYFARGS1( YYSTYPE * ,yylval_param)
{
    M4_YY_DECL_GUTS_VAR();
    yylval = yylval_param;
}
]])

m4_ifdef( [[<M4_YY_BISON_LLOC>]],
[[
    m4_ifdef( [[M4_YY_NO_GET_LLOC]],,
    [[
YYLTYPE *yyget_lloc  (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();
    return yylloc;
}
    ]])

    m4_ifdef( [[M4_YY_NO_SET_LLOC]],,
    [[
void yyset_lloc YYFARGS1( YYLTYPE * ,yylloc_param)
{
    M4_YY_DECL_GUTS_VAR();
    yylloc = yylloc_param;
}
    ]])
]])

%endif


/* User-visible API */

/* yylex_init is special because it creates the scanner itself, so it is
 * the ONLY reentrant function that doesn't take the scanner as the last argument.
 * That's why we explicitly handle the declaration, instead of using our macros.
 */
int yylex_init(yyscan_t* ptr_yy_globals)
{
    if (ptr_yy_globals == NULL){
        errno = EINVAL;
        return 1;
    }

    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), NULL );

    if (*ptr_yy_globals == NULL){
        errno = ENOMEM;
        return 1;
    }

    /* By setting to 0xAA, we expose bugs in yy_init_globals. Leave at 0x00 for releases. */
    memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));

    return yy_init_globals ( *ptr_yy_globals );
}


/* yylex_init_extra has the same functionality as yylex_init, but follows the
 * convention of taking the scanner as the last argument. Note however, that
 * this is a *pointer* to a scanner, as it will be allocated by this call (and
 * is the reason, too, why this function also must handle its own declaration).
 * The user defined value in the first argument will be available to yyalloc in
 * the yyextra field.
 */
int yylex_init_extra( YY_EXTRA_TYPE yy_user_defined, yyscan_t* ptr_yy_globals )
{
    struct yyguts_t dummy_yyguts;

    yyset_extra (yy_user_defined, &dummy_yyguts);

    if (ptr_yy_globals == NULL){
        errno = EINVAL;
        return 1;
    }

    *ptr_yy_globals = (yyscan_t) yyalloc ( sizeof( struct yyguts_t ), &dummy_yyguts );

    if (*ptr_yy_globals == NULL){
        errno = ENOMEM;
        return 1;
    }

    /* By setting to 0xAA, we expose bugs in
    yy_init_globals. Leave at 0x00 for releases. */
    memset(*ptr_yy_globals,0x00,sizeof(struct yyguts_t));

    yyset_extra (yy_user_defined, *ptr_yy_globals);

    return yy_init_globals ( *ptr_yy_globals );
}

%endif if-c-only
%# Actually, that ended an if-rentrant section

%if-c-only
static int yy_init_globals (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();
    /* Initialization is the same as for the non-reentrant scanner.
     * This function is called from yylex_destroy(), so don't allocate here.
     */

m4_ifdef( [[M4_YY_USE_LINENO]],
[[
    m4_ifdef( [[M4_YY_NOT_REENTRANT]],
    [[
    /* We do not touch yylineno unless the option is enabled. */
    yylineno =  1;
    ]])
]])
    YY_G(yy_buffer_stack) = NULL;
    YY_G(yy_buffer_stack_top) = 0;
    YY_G(yy_buffer_stack_max) = 0;
    YY_G(yy_c_buf_p) = NULL;
    YY_G(yy_init) = 0;
    YY_G(yy_start) = 0;

m4_ifdef( [[M4_YY_HAS_START_STACK_VARS]],
[[
    YY_G(yy_start_stack_ptr) = 0;
    YY_G(yy_start_stack_depth) = 0;
    YY_G(yy_start_stack) =  NULL;
]])

m4_ifdef( [[M4_YY_USES_REJECT]],
[[
    YY_G(yy_state_buf) = 0;
    YY_G(yy_state_ptr) = 0;
    YY_G(yy_full_match) = 0;
    YY_G(yy_lp) = 0;
]])

m4_ifdef( [[M4_YY_TEXT_IS_ARRAY]],
[[
    YY_G(yytext_ptr) = 0;
    YY_G(yy_more_offset) = 0;
    YY_G(yy_prev_more_offset) = 0;
]])

/* Defined in main.c */
#ifdef YY_STDINIT
    yyin = stdin;
    yyout = stdout;
#else
    yyin = NULL;
    yyout = NULL;
#endif

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


%if-c-only SNIP! this currently causes conflicts with the c++ scanner
/* yylex_destroy is for both reentrant and non-reentrant scanners. */
int yylex_destroy  (M4_YY_DEF_ONLY_ARG)
{
    M4_YY_DECL_GUTS_VAR();

    /* Pop the buffer stack, destroying each element. */
        while(YY_CURRENT_BUFFER){
                yy_delete_buffer( YY_CURRENT_BUFFER M4_YY_CALL_LAST_ARG );
                YY_CURRENT_BUFFER_LVALUE = NULL;
                yypop_buffer_state(M4_YY_CALL_ONLY_ARG);
        }

        /* Destroy the stack itself. */
        yyfree(YY_G(yy_buffer_stack) M4_YY_CALL_LAST_ARG);
        YY_G(yy_buffer_stack) = NULL;

m4_ifdef( [[M4_YY_HAS_START_STACK_VARS]],
[[
    /* Destroy the start condition stack. */
        yyfree( YY_G(yy_start_stack) M4_YY_CALL_LAST_ARG );
        YY_G(yy_start_stack) = NULL;
]])

m4_ifdef( [[M4_YY_USES_REJECT]],
[[
    yyfree ( YY_G(yy_state_buf) M4_YY_CALL_LAST_ARG);
    YY_G(yy_state_buf)  = NULL;
]])

    /* Reset the globals. This is important in a non-reentrant scanner so the next time
     * yylex() is called, initialization will occur. */
    yy_init_globals( M4_YY_CALL_ONLY_ARG);

%if-reentrant
    /* Destroy the main struct (reentrant only). */
    yyfree ( yyscanner M4_YY_CALL_LAST_ARG );
    yyscanner = NULL;
%endif
    return 0;
}
%endif


m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
/*
 * Internal utility routines.
 */
]])

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
#ifndef yytext_ptr
static void yy_flex_strncpy YYFARGS3( char*,s1, const char *,s2, int,n)
{
        M4_YY_DECL_GUTS_VAR();
        M4_YY_NOOP_GUTS_VAR();

        int i;
        for ( i = 0; i < n; ++i )
                s1[i] = s2[i];
}
#endif
]])

m4_ifdef( [[M4_YY_NOT_IN_HEADER]],
[[
#ifdef YY_NEED_STRLEN
static int yy_flex_strlen YYFARGS1( const char *,s)
{
        int n;
        for ( n = 0; s[n]; ++n )
                ;

        return n;
}
#endif
]])

m4_ifdef( [[M4_YY_NO_FLEX_ALLOC]],,
[[
void *yyalloc YYFARGS1( yy_size_t ,size)
{
        M4_YY_DECL_GUTS_VAR();
        M4_YY_NOOP_GUTS_VAR();
        return malloc(size);
}
]])

m4_ifdef( [[M4_YY_NO_FLEX_REALLOC]],,
[[
void *yyrealloc  YYFARGS2( void *,ptr, yy_size_t ,size)
{
        M4_YY_DECL_GUTS_VAR();
        M4_YY_NOOP_GUTS_VAR();

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

m4_ifdef( [[M4_YY_NO_FLEX_FREE]],,
[[
void yyfree YYFARGS1( void *,ptr)
{
        M4_YY_DECL_GUTS_VAR();
        M4_YY_NOOP_GUTS_VAR();
        free( (char *) ptr );   /* see yyrealloc() for (char *) cast */
}
]])

%if-tables-serialization definitions
m4preproc_include(`tables_shared.c')

static int yytbl_read8 (void *v, struct yytbl_reader * rd)
{
    errno = 0;
    if (fread (v, sizeof (flex_uint8_t), 1, rd->fp) != 1){
        errno = EIO;
        return -1;
    }
    rd->bread += (flex_uint32_t) sizeof(flex_uint8_t);
    return 0;
}

static int yytbl_read16 (void *v, struct yytbl_reader * rd)
{
    errno = 0;
    if (fread (v, sizeof (flex_uint16_t), 1, rd->fp) != 1){
        errno = EIO;
        return -1;
    }
    *((flex_uint16_t *) v) = ntohs (*((flex_uint16_t *) v));
    rd->bread += (flex_uint32_t) sizeof(flex_uint16_t);
    return 0;
}

static int yytbl_read32 (void *v, struct yytbl_reader * rd)
{
    errno = 0;
    if (fread (v, sizeof (flex_uint32_t), 1, rd->fp) != 1){
        errno = EIO;
        return -1;
    }
    *((flex_uint32_t *) v) = ntohl (*((flex_uint32_t *) v));
    rd->bread += (flex_uint32_t) sizeof(flex_uint32_t);
    return 0;
}

/** Read the header */
static int yytbl_hdr_read YYFARGS2(struct yytbl_hdr *, th, struct yytbl_reader *, rd)
{
    size_t  bytes;
    memset (th, 0, sizeof (struct yytbl_hdr));

    if (yytbl_read32 (&(th->th_magic), rd) != 0)
        return -1;

    if (th->th_magic != YYTBL_MAGIC){
        YY_FATAL_ERROR( "bad magic number" );   /* TODO: not fatal. */
        return -1;
    }

    if (yytbl_read32 (&(th->th_hsize), rd) != 0
        || yytbl_read32 (&(th->th_ssize), rd) != 0
        || yytbl_read16 (&(th->th_flags), rd) != 0)
        return -1;

    /* Sanity check on header size. Greater than 1k suggests some funny business. */
    if (th->th_hsize < 16 || th->th_hsize > 1024){
        YY_FATAL_ERROR( "insane header size detected" );   /* TODO: not fatal. */
        return -1;
    }

    /* Allocate enough space for the version and name fields */
    bytes = th->th_hsize - 14;
    th->th_version = (char *) yyalloc (bytes M4_YY_CALL_LAST_ARG);
    if ( ! th->th_version )
        YY_FATAL_ERROR( "out of dynamic memory in yytbl_hdr_read()" );

    /* we read it all into th_version, and point th_name into that data */
    if (fread (th->th_version, 1, bytes, rd->fp) != bytes){
        errno = EIO;
        yyfree(th->th_version M4_YY_CALL_LAST_ARG);
        th->th_version = NULL;
        return -1;
    }
    else
        rd->bread += (flex_uint32_t) bytes;

    th->th_name = th->th_version + strlen (th->th_version) + 1;
    return 0;
}

/** lookup id in the dmap list.
 *  @param dmap pointer to first element in list
 *  @return NULL if not found.
 */
static struct yytbl_dmap *yytbl_dmap_lookup YYFARGS2(struct yytbl_dmap *, dmap,
                                                      int, id)
{
        M4_YY_DECL_GUTS_VAR();
        M4_YY_NOOP_GUTS_VAR();

    while (dmap->dm_id)
        if ((int)(dmap->dm_id) == id)
            return dmap;
        else
            dmap++;
    return NULL;
}

/** Read a table while mapping its contents to the local array.
 *  @param dmap used to performing mapping
 *  @return 0 on success
 */
static int yytbl_data_load YYFARGS2(struct yytbl_dmap *, dmap, struct yytbl_reader*, rd)
{
    struct yytbl_data td;
    struct yytbl_dmap *transdmap=0;
    int     len, i, rv, inner_loop_count;
    void   *p=0;

    memset (&td, 0, sizeof (struct yytbl_data));

    if (yytbl_read16 (&td.td_id, rd) != 0
        || yytbl_read16 (&td.td_flags, rd) != 0
        || yytbl_read32 (&td.td_hilen, rd) != 0
        || yytbl_read32 (&td.td_lolen, rd) != 0)
        return -1;

    /* Lookup the map for the transition table so we have it in case we need it
     * inside the loop below. This scanner might not even have a transition
     * table, which is ok.
     */
    transdmap = yytbl_dmap_lookup (dmap, YYTD_ID_TRANSITION M4_YY_CALL_LAST_ARG);

    if ((dmap = yytbl_dmap_lookup (dmap, td.td_id M4_YY_CALL_LAST_ARG)) == NULL){
        YY_FATAL_ERROR( "table id not found in map." );   /* TODO: not fatal. */
        return -1;
    }

    /* Allocate space for table.
     * The --full yy_transition table is a special case, since we
     * need the dmap.dm_sz entry to tell us the sizeof the individual
     * struct members.
     */
    {
    size_t  bytes;

    if ((td.td_flags & YYTD_STRUCT))
        bytes = sizeof(struct yy_trans_info) * td.td_lolen * (td.td_hilen ? td.td_hilen : 1);
    else
        bytes = td.td_lolen * (td.td_hilen ? td.td_hilen : 1) * dmap->dm_sz;

    if(M4_YY_TABLES_VERIFY)
        /* We point to the array itself */
        p = dmap->dm_arr;
    else
        /* We point to the address of a pointer. */
        *dmap->dm_arr = p = (void *) yyalloc (bytes M4_YY_CALL_LAST_ARG);
        if ( ! p )
            YY_FATAL_ERROR( "out of dynamic memory in yytbl_data_load()" );
    }

    /* If it's a struct, we read 2 integers to get one element */
    if ((td.td_flags & YYTD_STRUCT) != 0)
        inner_loop_count = 2;
    else
        inner_loop_count = 1;

    /* read and map each element.
     * This loop iterates once for each element of the td_data array.
     * Notice that we increment 'i' in the inner loop.
     */
    len = yytbl_calc_total_len (&td);
    for (i = 0; i < len; ){
        int    j;


        /* This loop really executes exactly 1 or 2 times.
         * The second time is to handle the second member of the
         * YYTD_STRUCT for the yy_transition array.
         */
        for (j = 0; j < inner_loop_count; j++, i++) {
            flex_int32_t t32;

            /* read into t32 no matter what the real size is. */
            {
            flex_int16_t t16;
            flex_int8_t  t8;

            switch (YYTDFLAGS2BYTES (td.td_flags)) {
            case sizeof (flex_int32_t):
                rv = yytbl_read32 (&t32, rd);
                break;
            case sizeof (flex_int16_t):
                rv = yytbl_read16 (&t16, rd);
                t32 = t16;
                break;
            case sizeof (flex_int8_t):
                rv = yytbl_read8 (&t8, rd);
                t32 = t8;
                break;
            default:
                YY_FATAL_ERROR( "invalid td_flags" );   /* TODO: not fatal. */
                return -1;
            }
            }
            if (rv != 0)
                return -1;

            /* copy into the deserialized array... */

            if ((td.td_flags & YYTD_STRUCT)) {
                /* t32 is the j'th member of a two-element struct. */
                void   *v;

                v = j == 0 ? &(((struct yy_trans_info *) p)->yy_verify)
                    : &(((struct yy_trans_info *) p)->yy_nxt);

                switch (dmap->dm_sz) {
                case sizeof (flex_int32_t):
                    if (M4_YY_TABLES_VERIFY){
                        if( ((flex_int32_t *) v)[0] != (flex_int32_t) t32)
                           YY_FATAL_ERROR( "tables verification failed at YYTD_STRUCT flex_int32_t" );
                    }else
                        ((flex_int32_t *) v)[0] = (flex_int32_t) t32;
                    break;
                case sizeof (flex_int16_t):
                    if (M4_YY_TABLES_VERIFY ){
                        if(((flex_int16_t *) v)[0] != (flex_int16_t) t32)
                        YY_FATAL_ERROR( "tables verification failed at YYTD_STRUCT flex_int16_t" );
                    }else
                        ((flex_int16_t *) v)[0] = (flex_int16_t) t32;
                    break;
                case sizeof(flex_int8_t):
                    if (M4_YY_TABLES_VERIFY ){
                         if( ((flex_int8_t *) v)[0] != (flex_int8_t) t32)
                        YY_FATAL_ERROR( "tables verification failed at YYTD_STRUCT flex_int8_t" );
                    }else
                        ((flex_int8_t *) v)[0] = (flex_int8_t) t32;
                    break;
                default:
                    YY_FATAL_ERROR( "invalid dmap->dm_sz for struct" );   /* TODO: not fatal. */
                    return -1;
                }

                /* if we're done with j, increment p */
                if (j == 1)
                    p = (struct yy_trans_info *) p + 1;
            }
            else if ((td.td_flags & YYTD_PTRANS)) {
                /* t32 is an index into the transition array. */
                struct yy_trans_info *v;


                if (!transdmap){
                    YY_FATAL_ERROR( "transition table not found" );   /* TODO: not fatal. */
                    return -1;
                }

                if( M4_YY_TABLES_VERIFY)
                    v = &(((struct yy_trans_info *) (transdmap->dm_arr))[t32]);
                else
                    v = &((*((struct yy_trans_info **) (transdmap->dm_arr)))[t32]);

                if(M4_YY_TABLES_VERIFY ){
                    if( ((struct yy_trans_info **) p)[0] != v)
                        YY_FATAL_ERROR( "tables verification failed at YYTD_PTRANS" );
                }else
                    ((struct yy_trans_info **) p)[0] = v;

                /* increment p */
                p = (struct yy_trans_info **) p + 1;
            }
            else {
                /* t32 is a plain int. copy data, then incrememnt p. */
                switch (dmap->dm_sz) {
                case sizeof (flex_int32_t):
                    if(M4_YY_TABLES_VERIFY ){
                        if( ((flex_int32_t *) p)[0] != (flex_int32_t) t32)
                        YY_FATAL_ERROR( "tables verification failed at flex_int32_t" );
                    }else
                        ((flex_int32_t *) p)[0] = (flex_int32_t) t32;
                    p = ((flex_int32_t *) p) + 1;
                    break;
                case sizeof (flex_int16_t):
                    if(M4_YY_TABLES_VERIFY ){
                        if( ((flex_int16_t *) p)[0] != (flex_int16_t) t32)
                        YY_FATAL_ERROR( "tables verification failed at flex_int16_t" );
                    }else
                        ((flex_int16_t *) p)[0] = (flex_int16_t) t32;
                    p = ((flex_int16_t *) p) + 1;
                    break;
                case sizeof (flex_int8_t):
                    if(M4_YY_TABLES_VERIFY ){
                        if( ((flex_int8_t *) p)[0] != (flex_int8_t) t32)
                        YY_FATAL_ERROR( "tables verification failed at flex_int8_t" );
                    }else
                        ((flex_int8_t *) p)[0] = (flex_int8_t) t32;
                    p = ((flex_int8_t *) p) + 1;
                    break;
                default:
                    YY_FATAL_ERROR( "invalid dmap->dm_sz for plain int" );   /* TODO: not fatal. */
                    return -1;
                }
            }
        }

    }

    /* Now eat padding. */
    {
        int pad;
        pad = yypad64(rd->bread);
        while(--pad >= 0){
            flex_int8_t t8;
            if(yytbl_read8(&t8,rd) != 0)
                return -1;
        }
    }

    return 0;
}

%define-yytables   The name for this specific scanner's tables.

/* Find the key and load the DFA tables from the given stream.  */
static int yytbl_fload YYFARGS2(FILE *, fp, const char *, key)
{
    int rv=0;
    struct yytbl_hdr th;
    struct yytbl_reader rd;

    rd.fp = fp;
    th.th_version = NULL;

    /* Keep trying until we find the right set of tables or end of file. */
    while (!feof(rd.fp)) {
        rd.bread = 0;
        if (yytbl_hdr_read (&th, &rd M4_YY_CALL_LAST_ARG) != 0){
            rv = -1;
            goto return_rv;
        }

        /* A NULL key means choose the first set of tables. */
        if (key == NULL)
            break;

        if (strcmp(th.th_name,key) != 0){
            /* Skip ahead to next set */
            fseek(rd.fp, th.th_ssize - th.th_hsize, SEEK_CUR);
            yyfree(th.th_version M4_YY_CALL_LAST_ARG);
            th.th_version = NULL;
        }
        else
            break;
    }

    while (rd.bread < th.th_ssize){
        /* Load the data tables */
        if(yytbl_data_load (yydmap,&rd M4_YY_CALL_LAST_ARG) != 0){
            rv = -1;
            goto return_rv;
        }
    }

return_rv:
    if(th.th_version){
        yyfree(th.th_version M4_YY_CALL_LAST_ARG);
        th.th_version = NULL;
    }

    return rv;
}

/** Load the DFA tables for this scanner from the given stream.  */
int yytables_fload YYFARGS1(FILE *, fp)
{

    if( yytbl_fload(fp, YYTABLES_NAME M4_YY_CALL_LAST_ARG) != 0)
        return -1;
    return 0;
}

/** Destroy the loaded tables, freeing memory, etc.. */
int yytables_destroy (M4_YY_DEF_ONLY_ARG)
{
    struct yytbl_dmap *dmap=0;

    if(!M4_YY_TABLES_VERIFY){
        /* Walk the dmap, freeing the pointers */
        for(dmap=yydmap; dmap->dm_id; dmap++) {
            void * v;
            v = dmap->dm_arr;
            if(v && *(char**)v){
                    yyfree(*(char**)v M4_YY_CALL_LAST_ARG);
                    *(char**)v = NULL;
            }
        }
    }

    return 0;
}

/* end table serialization code definitions */
%endif


m4_ifdef([[M4_YY_MAIN]], [[
int main (void);

int main ()
{

%if-reentrant
    yyscan_t lexer;
    yylex_init(&lexer);
    yylex( lexer );
    yylex_destroy( lexer);

%endif
%if-not-reentrant
        yylex();
%endif

        return 0;
}
]])

%ok-for-header
m4_ifdef( [[M4_YY_IN_HEADER]],
[[
#undef YY_NEW_FILE
#undef YY_FLUSH_BUFFER
#undef yy_set_bol
#undef yy_new_buffer
#undef yy_set_interactive
#undef YY_DO_BEFORE_ACTION

#ifdef YY_DECL_IS_OURS
#undef YY_DECL_IS_OURS
#undef YY_DECL
#endif
m4preproc_undivert(1)
]])