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  • #line 2 "ast_expr2f.c"
    
    #line 4 "ast_expr2f.c"
    
    #define  YY_INT_ALIGNED short int
    
    /* A lexical scanner generated by flex */
    
    #define FLEX_SCANNER
    #define YY_FLEX_MAJOR_VERSION 2
    #define YY_FLEX_MINOR_VERSION 5
    
    #if YY_FLEX_SUBMINOR_VERSION > 0
    #define FLEX_BETA
    #endif
    
    /* First, we deal with  platform-specific or compiler-specific issues. */
    
    /* begin standard C headers. */
    #include <stdio.h>
    #include <string.h>
    #include <errno.h>
    #include <stdlib.h>
    
    /* end standard C headers. */
    
    /* flex integer type definitions */
    
    #ifndef FLEXINT_H
    #define FLEXINT_H
    
    /* C99 systems have <inttypes.h>. Non-C99 systems may or may not. */
    
    
    #if defined (__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
    
    
    /* C99 says to define __STDC_LIMIT_MACROS before including stdint.h,
     * if you want the limit (max/min) macros for int types. 
     */
    #ifndef __STDC_LIMIT_MACROS
    #define __STDC_LIMIT_MACROS 1
    #endif
    
    
    #include <inttypes.h>
    typedef int8_t flex_int8_t;
    typedef uint8_t flex_uint8_t;
    typedef int16_t flex_int16_t;
    typedef uint16_t flex_uint16_t;
    typedef int32_t flex_int32_t;
    typedef uint32_t flex_uint32_t;
    #else
    typedef signed char flex_int8_t;
    typedef short int flex_int16_t;
    typedef int flex_int32_t;
    typedef unsigned char flex_uint8_t; 
    typedef unsigned short int flex_uint16_t;
    typedef unsigned int flex_uint32_t;
    
    /* Limits of integral types. */
    #ifndef INT8_MIN
    #define INT8_MIN               (-128)
    #endif
    #ifndef INT16_MIN
    #define INT16_MIN              (-32767-1)
    #endif
    #ifndef INT32_MIN
    #define INT32_MIN              (-2147483647-1)
    #endif
    #ifndef INT8_MAX
    #define INT8_MAX               (127)
    #endif
    #ifndef INT16_MAX
    #define INT16_MAX              (32767)
    #endif
    #ifndef INT32_MAX
    #define INT32_MAX              (2147483647)
    #endif
    #ifndef UINT8_MAX
    #define UINT8_MAX              (255U)
    #endif
    #ifndef UINT16_MAX
    #define UINT16_MAX             (65535U)
    #endif
    #ifndef UINT32_MAX
    #define UINT32_MAX             (4294967295U)
    #endif
    
    
    #endif /* ! FLEXINT_H */
    
    #ifdef __cplusplus
    
    /* The "const" storage-class-modifier is valid. */
    #define YY_USE_CONST
    
    #else	/* ! __cplusplus */
    
    
    /* C99 requires __STDC__ to be defined as 1. */
    #if defined (__STDC__)
    
    #endif	/* ! __cplusplus */
    
    #ifdef YY_USE_CONST
    #define yyconst const
    #else
    #define yyconst
    #endif
    
    /* Returned upon end-of-file. */
    #define YY_NULL 0
    
    /* Promotes a possibly negative, possibly signed char to an unsigned
     * integer for use as an array index.  If the signed char is negative,
     * we want to instead treat it as an 8-bit unsigned char, hence the
     * double cast.
     */
    #define YY_SC_TO_UI(c) ((unsigned int) (unsigned char) c)
    
    /* An opaque pointer. */
    #ifndef YY_TYPEDEF_YY_SCANNER_T
    #define YY_TYPEDEF_YY_SCANNER_T
    typedef void* yyscan_t;
    #endif
    
    /* For convenience, these vars (plus the bison vars far below)
       are macros in the reentrant scanner. */
    #define yyin yyg->yyin_r
    #define yyout yyg->yyout_r
    #define yyextra yyg->yyextra_r
    #define yyleng yyg->yyleng_r
    #define yytext yyg->yytext_r
    #define yylineno (YY_CURRENT_BUFFER_LVALUE->yy_bs_lineno)
    #define yycolumn (YY_CURRENT_BUFFER_LVALUE->yy_bs_column)
    #define yy_flex_debug yyg->yy_flex_debug_r
    
    /* 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 yyg->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 ((yyg->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 ast_yyrestart(yyin ,yyscanner )
    
    #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
    
    /* 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
    
    #define EOB_ACT_CONTINUE_SCAN 0
    #define EOB_ACT_END_OF_FILE 1
    #define EOB_ACT_LAST_MATCH 2
    
        #define YY_LESS_LINENO(n)
        
    /* Return all but the first "n" matched characters back to the input stream. */
    #define yyless(n) \
    	do \
    		{ \
    		/* Undo effects of setting up yytext. */ \
            int yyless_macro_arg = (n); \
            YY_LESS_LINENO(yyless_macro_arg);\
    		*yy_cp = yyg->yy_hold_char; \
    		YY_RESTORE_YY_MORE_OFFSET \
    		yyg->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, yyg->yytext_ptr , yyscanner )
    
    #ifndef YY_TYPEDEF_YY_SIZE_T
    #define YY_TYPEDEF_YY_SIZE_T
    
    #endif
    
    #ifndef YY_STRUCT_YY_BUFFER_STATE
    #define YY_STRUCT_YY_BUFFER_STATE
    struct yy_buffer_state
    	{
    	FILE *yy_input_file;
    
    	char *yy_ch_buf;		/* input buffer */
    	char *yy_buf_pos;		/* current position in input buffer */
    
    	/* Size of input buffer in bytes, not including room for EOB
    	 * characters.
    	 */
    	yy_size_t yy_buf_size;
    
    	/* Number of characters read into yy_ch_buf, not including EOB
    	 * characters.
    	 */
    	int yy_n_chars;
    
    	/* Whether we "own" the buffer - i.e., we know we created it,
    	 * and can realloc() it to grow it, and should free() it to
    	 * delete it.
    	 */
    	int yy_is_our_buffer;
    
    	/* Whether this is an "interactive" input source; if so, and
    	 * if we're using stdio for input, then we want to use getc()
    	 * instead of fread(), to make sure we stop fetching input after
    	 * each newline.
    	 */
    	int yy_is_interactive;
    
    	/* Whether we're considered to be at the beginning of a line.
    	 * If so, '^' rules will be active on the next match, otherwise
    	 * not.
    	 */
    	int yy_at_bol;
    
    
        int yy_bs_lineno; /**< The line count. */
        int yy_bs_column; /**< The column count. */
    
        
    	/* Whether to try to fill the input buffer when we reach the
    	 * end of it.
    	 */
    	int yy_fill_buffer;
    
    	int yy_buffer_status;
    
    #define YY_BUFFER_NEW 0
    #define YY_BUFFER_NORMAL 1
    	/* When an EOF's been seen but there's still some text to process
    	 * then we mark the buffer as YY_EOF_PENDING, to indicate that we
    	 * shouldn't try reading from the input source any more.  We might
    	 * still have a bunch of tokens to match, though, because of
    	 * possible backing-up.
    	 *
    	 * When we actually see the EOF, we change the status to "new"
    	 * (via ast_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 */
    
    /* 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 ( yyg->yy_buffer_stack \
                              ? yyg->yy_buffer_stack[yyg->yy_buffer_stack_top] \
                              : NULL)
    
    /* Same as previous macro, but useful when we know that the buffer stack is not
     * NULL or when we need an lvalue. For internal use only.
     */
    #define YY_CURRENT_BUFFER_LVALUE yyg->yy_buffer_stack[yyg->yy_buffer_stack_top]
    
    void ast_yyrestart (FILE *input_file ,yyscan_t yyscanner );
    void ast_yy_switch_to_buffer (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
    YY_BUFFER_STATE ast_yy_create_buffer (FILE *file,int size ,yyscan_t yyscanner );
    void ast_yy_delete_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
    void ast_yy_flush_buffer (YY_BUFFER_STATE b ,yyscan_t yyscanner );
    void ast_yypush_buffer_state (YY_BUFFER_STATE new_buffer ,yyscan_t yyscanner );
    void ast_yypop_buffer_state (yyscan_t yyscanner );
    
    static void ast_yyensure_buffer_stack (yyscan_t yyscanner );
    static void ast_yy_load_buffer_state (yyscan_t yyscanner );
    static void ast_yy_init_buffer (YY_BUFFER_STATE b,FILE *file ,yyscan_t yyscanner );
    
    #define YY_FLUSH_BUFFER ast_yy_flush_buffer(YY_CURRENT_BUFFER ,yyscanner)
    
    YY_BUFFER_STATE ast_yy_scan_buffer (char *base,yy_size_t size ,yyscan_t yyscanner );
    YY_BUFFER_STATE ast_yy_scan_string (yyconst char *yy_str ,yyscan_t yyscanner );
    YY_BUFFER_STATE ast_yy_scan_bytes (yyconst char *bytes,int len ,yyscan_t yyscanner );
    
    void *ast_yyalloc (yy_size_t ,yyscan_t yyscanner );
    void *ast_yyrealloc (void *,yy_size_t ,yyscan_t yyscanner );
    void ast_yyfree (void * ,yyscan_t yyscanner );
    
    #define yy_new_buffer ast_yy_create_buffer
    
    #define yy_set_interactive(is_interactive) \
    	{ \
    	if ( ! YY_CURRENT_BUFFER ){ \
            ast_yyensure_buffer_stack (yyscanner); \
    		YY_CURRENT_BUFFER_LVALUE =    \
                ast_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
    	} \
    	YY_CURRENT_BUFFER_LVALUE->yy_is_interactive = is_interactive; \
    	}
    
    #define yy_set_bol(at_bol) \
    	{ \
    	if ( ! YY_CURRENT_BUFFER ){\
            ast_yyensure_buffer_stack (yyscanner); \
    		YY_CURRENT_BUFFER_LVALUE =    \
                ast_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner); \
    	} \
    	YY_CURRENT_BUFFER_LVALUE->yy_at_bol = at_bol; \
    	}
    
    #define YY_AT_BOL() (YY_CURRENT_BUFFER_LVALUE->yy_at_bol)
    
    /* Begin user sect3 */
    
    #define ast_yywrap(n) 1
    #define YY_SKIP_YYWRAP
    
    
    typedef unsigned char YY_CHAR;
    
    
    typedef int yy_state_type;
    
    #define yytext_ptr yytext_r
    
    static yy_state_type yy_get_previous_state (yyscan_t yyscanner );
    static yy_state_type yy_try_NUL_trans (yy_state_type current_state  ,yyscan_t yyscanner);
    static int yy_get_next_buffer (yyscan_t yyscanner );
    static void yy_fatal_error (yyconst char msg[] ,yyscan_t yyscanner );
    
    /* Done after the current pattern has been matched and before the
     * corresponding action - sets up yytext.
     */
    #define YY_DO_BEFORE_ACTION \
    	yyg->yytext_ptr = yy_bp; \
    
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    	yyg->yytext_ptr -= yyg->yy_more_len; \
    	yyleng = (size_t) (yy_cp - yyg->yytext_ptr); \
    
    	yyg->yy_hold_char = *yy_cp; \
    	*yy_cp = '\0'; \
    	yyg->yy_c_buf_p = yy_cp;
    
    
    #define YY_NUM_RULES 38
    #define YY_END_OF_BUFFER 39
    
    /* This struct is not used in this scanner,
       but its presence is necessary. */
    struct yy_trans_info
    	{
    	flex_int32_t yy_verify;
    	flex_int32_t yy_nxt;
    	};
    
    static yyconst flex_int16_t yy_accept[63] =
    
            0,    0,    0,    0,   35,   35,   39,   38,   27,   29,
           21,   38,   31,   38,   19,    2,   24,   25,   17,   14,
    
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           15,   16,   18,   30,   22,   10,    3,    9,   20,    1,
    
           38,   38,   34,   33,   35,   37,   37,   13,    0,   28,
    
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           31,    0,   26,    5,   31,   30,   23,   12,    6,    7,
    
           11,    4,    8,    0,   34,   33,   35,    0,   36,   32,
           30,    0
    
        } ;
    
    static yyconst flex_int32_t yy_ec[256] =
        {   0,
            1,    1,    1,    1,    1,    1,    1,    1,    2,    3,
            1,    1,    2,    1,    1,    1,    1,    1,    1,    1,
            1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
            1,    2,    4,    5,    6,    7,    8,    9,    6,   10,
           11,   12,   13,   14,   15,   16,   17,   18,   18,   18,
           18,   18,   18,   18,   18,   18,   18,   19,    6,   20,
           21,   22,   23,    6,    6,    6,    6,    6,    6,    6,
            6,    6,    6,    6,    6,    6,    6,    6,    6,    6,
            6,    6,    6,    6,    6,    6,    6,    6,    6,    6,
            1,    6,    1,    6,    6,    1,    6,    6,    6,    6,
    
            6,    6,    6,    6,    6,    6,    6,    6,    6,    6,
            6,    6,    6,    6,    6,    6,    6,    6,    6,    6,
            6,    6,   24,   25,   26,   27,    1,   28,   28,   28,
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
    
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
           28,   28,   28,   28,   28,   28,   28,   28,   28,   28,
           28,   28,   28,   28,   28
        } ;
    
    static yyconst flex_int32_t yy_meta[29] =
        {   0,
    
            1,    2,    2,    2,    1,    3,    3,    2,    2,    2,
    
            2,    2,    2,    1,    2,    3,    2,    3,    2,    2,
            2,    2,    2,    1,    2,    1,    1,    3
    
    static yyconst flex_int16_t yy_base[70] =
    
            0,    0,    5,    6,   32,   60,   73,  130,  130,  130,
           51,   66,   63,   45,  130,   59,  130,  130,  130,  130,
          130,  130,  130,   83,   45,   42,   13,   41,  130,   32,
           28,   17,  130,  130,   47,  130,   29,  130,   47,  130,
           44,   25,  130,  130,   29,    0,  130,  130,  130,  130,
          130,  130,  130,   18,  130,  130,   38,   12,  130,  130,
            0,  130,  111,  114,  117,   32,  120,  123,  126
    
    static yyconst flex_int16_t yy_def[70] =
    
           62,    1,   63,   63,   64,   64,   62,   62,   62,   62,
           62,   65,   66,   67,   62,   62,   62,   62,   62,   62,
           62,   62,   62,   62,   62,   62,   62,   62,   62,   62,
           62,   68,   62,   62,   69,   62,   62,   62,   65,   62,
           66,   67,   62,   62,   41,   24,   62,   62,   62,   62,
           62,   62,   62,   68,   62,   62,   69,   62,   62,   62,
           45,    0,   62,   62,   62,   62,   62,   62,   62
    
    static yyconst flex_int16_t yy_nxt[159] =
    
        {   0,
            8,    9,   10,   11,   12,   13,   14,   15,   16,   17,
           18,   19,   20,   21,   22,   13,   23,   24,   25,   26,
           27,   28,   29,    8,   30,    8,   31,   13,   33,   33,
    
           34,   34,   35,   49,   41,   59,   35,   35,   37,   50,
           55,   55,   56,   56,   58,   35,   61,   35,   60,   35,
           42,   40,   59,   58,   53,   35,   52,   35,   35,   35,
           35,   51,   48,   47,   35,   35,   37,   44,   43,   42,
           40,   38,   62,   35,   62,   35,   62,   35,   62,   62,
           62,   62,   62,   35,   62,   35,   35,   35,   41,   42,
           62,   62,   62,   62,   62,   62,   62,   62,   45,   62,
    
           46,   62,   62,   62,   62,   62,   62,   62,   62,   62,
           41,   32,   32,   32,   36,   36,   36,   39,   39,   39,
           41,   41,   41,   54,   54,   54,   57,   62,   57,    7,
           62,   62,   62,   62,   62,   62,   62,   62,   62,   62,
           62,   62,   62,   62,   62,   62,   62,   62,   62,   62,
           62,   62,   62,   62,   62,   62,   62,   62
    
    static yyconst flex_int16_t yy_chk[159] =
    
        {   0,
            1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
            1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
            1,    1,    1,    1,    1,    1,    1,    1,    3,    4,
    
            3,    4,    5,   27,   66,   58,    5,    5,    5,   27,
           32,   54,   32,   54,   57,    5,   45,    5,   42,    5,
           41,   39,   37,   35,   31,    5,   30,    5,    5,    5,
            6,   28,   26,   25,    6,    6,    6,   16,   14,   13,
           12,   11,    7,    6,    0,    6,    0,    6,    0,    0,
    
            0,    0,    0,    6,    0,    6,    6,    6,   24,   24,
            0,    0,    0,    0,    0,    0,    0,    0,   24,    0,
    
           24,    0,    0,    0,    0,    0,    0,    0,    0,    0,
    
           24,   63,   63,   63,   64,   64,   64,   65,   65,   65,
           67,   67,   67,   68,   68,   68,   69,    0,   69,   62,
           62,   62,   62,   62,   62,   62,   62,   62,   62,   62,
           62,   62,   62,   62,   62,   62,   62,   62,   62,   62,
           62,   62,   62,   62,   62,   62,   62,   62
    
        } ;
    
    /* The intent behind this definition is that it'll catch
     * any uses of REJECT which flex missed.
     */
    #define REJECT reject_used_but_not_detected
    
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    #define yymore() (yyg->yy_more_flag = 1)
    #define YY_MORE_ADJ yyg->yy_more_len
    
    #define YY_RESTORE_YY_MORE_OFFSET
    #line 1 "ast_expr2.fl"
    #line 2 "ast_expr2.fl"
    
    /*
     * Asterisk -- An open source telephony toolkit.
     *
     * Copyright (C) 1999 - 2006, Digium, Inc.
     *
     * Mark Spencer <markster@digium.com>
     *
     * See http://www.asterisk.org for more information about
     * the Asterisk project. Please do not directly contact
     * any of the maintainers of this project for assistance;
     * the project provides a web site, mailing lists and IRC
     * channels for your use.
     *
     * This program is free software, distributed under the terms of
     * the GNU General Public License Version 2. See the LICENSE file
     * at the top of the source tree.
     */
    
    
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    /*! \file
     *
    
     * \brief Dialplan Expression Lexical Scanner
    
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     */
    
    
    #include <sys/types.h>
    #include <stdio.h>
    
    
    #if !defined(STANDALONE)
    
    ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
    
    #else
    #ifndef __USE_ISOC99
    #define __USE_ISOC99 1
    #endif
    #endif
    
    #ifdef __USE_ISOC99
    
    #define FP___FMOD   fmodl
    #define FP___STRTOD  strtold
    #define FP___TYPE    long double
    #else
    
    #define FP___FMOD   fmod
    #define FP___STRTOD  strtod
    #define FP___TYPE    double
    
    #include <stdlib.h>
    #include <string.h>
    #include <locale.h>
    #include <ctype.h>
    
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    #if !defined(SOLARIS) && !defined(__CYGWIN__)
    
    #endif
    #include <errno.h>
    #include <regex.h>
    #include <limits.h>
    
    
    #include "asterisk/ast_expr.h"
    #include "asterisk/logger.h"
    
    /* Conditionally redefine the macro from flex 2.5.35, in case someone uses flex <2.5.35 to regenerate this file. */
    #ifndef ECHO
    #define ECHO do { if (fwrite( yytext, yyleng, 1, yyout )) {} } while (0)
    
    	AST_EXPR_number, AST_EXPR_numeric_string, AST_EXPR_string
    
    		FP___TYPE i; /* long double or just double if it's a bad day */
    
    	} u;
    } ;
    
    #include "ast_expr2.h" /* the o/p of the bison on ast_expr2.y */
    
    
    #define SET_COLUMNS	do {		\
    	yylloc_param->first_column = (int)(yyg->yytext_r - YY_CURRENT_BUFFER_LVALUE->yy_ch_buf); \
    	yylloc_param->last_column += yyleng - 1; \
    	yylloc_param->first_line = yylloc_param->last_line = 1; \
    	} while (0)
    
    #define SET_STRING	do {		\
    	yylval_param->val = calloc(1, sizeof(struct val));	\
    	yylval_param->val->type = AST_EXPR_string;		\
    	yylval_param->val->u.s = strdup(yytext);		\
    	} while (0)
    
    #define SET_NUMERIC_STRING	do {	\
    	yylval_param->val = calloc(1, sizeof(struct val));	\
    	yylval_param->val->type = AST_EXPR_numeric_string;	\
    	yylval_param->val->u.s = strdup(yytext);	\
    	} while (0)
    
    
    struct parse_io
    {
    	char *string;
    	struct val *val;
    	yyscan_t scanner;
    
    void ast_yyset_column(int column_no, yyscan_t yyscanner);
    int ast_yyget_column(yyscan_t yyscanner);
    
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    static int curlycount = 0;
    
    static char *expr2_token_subst(const char *mess);
    
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    #define var 1
    #define trail 2
    
    #ifndef YY_NO_UNISTD_H
    
    /* Special case for "unistd.h", since it is non-ANSI. We include it way
     * down here because we want the user's section 1 to have been scanned first.
     * The user has a chance to override it with an option.
     */
    #include <unistd.h>
    
    
    #ifndef YY_EXTRA_TYPE
    #define YY_EXTRA_TYPE void *
    #endif
    
    /* 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;
    
        char *yytext_r;
        int yy_more_flag;
        int yy_more_len;
    
        YYSTYPE * yylval_r;
    
        YYLTYPE * yylloc_r;
    
        }; /* end struct yyguts_t */
    
    
    static int yy_init_globals (yyscan_t yyscanner );
    
    
        /* This must go here because YYSTYPE and YYLTYPE are included
         * from bison output in section 1.*/
        #    define yylval yyg->yylval_r
        
        #    define yylloc yyg->yylloc_r
        
    
    int ast_yylex_init (yyscan_t* scanner);
    
    int ast_yylex_init_extra (YY_EXTRA_TYPE user_defined,yyscan_t* scanner);
    
    
    /* Accessor methods to globals.
       These are made visible to non-reentrant scanners for convenience. */
    
    int ast_yylex_destroy (yyscan_t yyscanner );
    
    int ast_yyget_debug (yyscan_t yyscanner );
    
    void ast_yyset_debug (int debug_flag ,yyscan_t yyscanner );
    
    YY_EXTRA_TYPE ast_yyget_extra (yyscan_t yyscanner );
    
    void ast_yyset_extra (YY_EXTRA_TYPE user_defined ,yyscan_t yyscanner );
    
    FILE *ast_yyget_in (yyscan_t yyscanner );
    
    void ast_yyset_in  (FILE * in_str ,yyscan_t yyscanner );
    
    FILE *ast_yyget_out (yyscan_t yyscanner );
    
    void ast_yyset_out  (FILE * out_str ,yyscan_t yyscanner );
    
    int ast_yyget_leng (yyscan_t yyscanner );
    
    char *ast_yyget_text (yyscan_t yyscanner );
    
    int ast_yyget_lineno (yyscan_t yyscanner );
    
    void ast_yyset_lineno (int line_number ,yyscan_t yyscanner );
    
    YYSTYPE * ast_yyget_lval (yyscan_t yyscanner );
    
    void ast_yyset_lval (YYSTYPE * yylval_param ,yyscan_t yyscanner );
    
           YYLTYPE *ast_yyget_lloc (yyscan_t yyscanner );
        
            void ast_yyset_lloc (YYLTYPE * yylloc_param ,yyscan_t yyscanner );
        
    /* Macros after this point can all be overridden by user definitions in
     * section 1.
     */
    
    #ifndef YY_SKIP_YYWRAP
    #ifdef __cplusplus
    extern "C" int ast_yywrap (yyscan_t yyscanner );
    #else
    extern int ast_yywrap (yyscan_t yyscanner );
    #endif
    #endif
    
        static void yyunput (int c,char *buf_ptr  ,yyscan_t yyscanner);
        
    #ifndef yytext_ptr
    static void yy_flex_strncpy (char *,yyconst char *,int ,yyscan_t yyscanner);
    #endif
    
    #ifdef YY_NEED_STRLEN
    static int yy_flex_strlen (yyconst char * ,yyscan_t yyscanner);
    #endif
    
    #ifndef YY_NO_INPUT
    
    #ifdef __cplusplus
    static int yyinput (yyscan_t yyscanner );
    #else
    static int input (yyscan_t yyscanner );
    #endif
    
    #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
    
    #endif
    
    /* Copy whatever the last rule matched to the standard output. */
    #ifndef ECHO
    /* This used to be an fputs(), but since the string might contain NUL's,
     * we now use fwrite().
     */
    
    #define ECHO do { if (fwrite( yytext, yyleng, 1, yyout )) {} } while (0)
    
    #endif
    
    /* Gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
     * is returned in "result".
     */
    #ifndef YY_INPUT
    #define YY_INPUT(buf,result,max_size) \
    
    	if ( YY_CURRENT_BUFFER_LVALUE->yy_is_interactive ) \
    
    		for ( n = 0; n < max_size && \
    			     (c = getc( yyin )) != EOF && c != '\n'; ++n ) \
    			buf[n] = (char) c; \
    		if ( c == '\n' ) \
    			buf[n++] = (char) c; \
    		if ( c == EOF && ferror( yyin ) ) \
    
    			YY_FATAL_ERROR( "input in flex scanner failed" ); \
    
    		while ( (result = fread(buf, 1, max_size, yyin))==0 && ferror(yyin)) \
    			{ \
    			if( errno != EINTR) \
    				{ \
    				YY_FATAL_ERROR( "input in flex scanner failed" ); \
    				break; \
    				} \
    			errno=0; \
    			clearerr(yyin); \
    			} \
    		}\
    
    \
    
    #endif
    
    /* No semi-colon after return; correct usage is to write "yyterminate();" -
     * we don't want an extra ';' after the "return" because that will cause
     * some compilers to complain about unreachable statements.
     */
    #ifndef yyterminate
    #define yyterminate() return YY_NULL
    #endif
    
    /* Number of entries by which start-condition stack grows. */
    #ifndef YY_START_STACK_INCR
    #define YY_START_STACK_INCR 25
    #endif
    
    /* Report a fatal error. */
    #ifndef YY_FATAL_ERROR
    #define YY_FATAL_ERROR(msg) yy_fatal_error( msg , yyscanner)
    #endif
    
    /* end tables serialization structures and prototypes */
    
    /* Default declaration of generated scanner - a define so the user can
     * easily add parameters.
     */
    #ifndef YY_DECL
    #define YY_DECL_IS_OURS 1
    
    
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    extern int ast_yylex \
                   (YYSTYPE * yylval_param,YYLTYPE * yylloc_param ,yyscan_t yyscanner);
    
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    #define YY_DECL int ast_yylex \
                   (YYSTYPE * yylval_param, YYLTYPE * yylloc_param , yyscan_t yyscanner)
    
    #endif /* !YY_DECL */
    
    /* Code executed at the beginning of each rule, after yytext and yyleng
     * have been set up.
     */
    #ifndef YY_USER_ACTION
    #define YY_USER_ACTION
    #endif
    
    /* Code executed at the end of each rule. */
    #ifndef YY_BREAK
    #define YY_BREAK break;
    #endif
    
    #define YY_RULE_SETUP \
    	YY_USER_ACTION
    
    
    /** The main scanner function which does all the work.
    
     */
    YY_DECL
    {
    	register yy_state_type yy_current_state;
    	register char *yy_cp, *yy_bp;
    	register int yy_act;
        struct yyguts_t * yyg = (struct yyguts_t*)yyscanner;
    
    
    #line 130 "ast_expr2.fl"
    
    	if ( !yyg->yy_init )
    
    		yyg->yy_init = 1;
    
    
    #ifdef YY_USER_INIT
    		YY_USER_INIT;
    #endif
    
    		if ( ! yyg->yy_start )
    			yyg->yy_start = 1;	/* first start state */
    
    		if ( ! yyin )
    			yyin = stdin;
    
    		if ( ! yyout )
    			yyout = stdout;
    
    		if ( ! YY_CURRENT_BUFFER ) {
    			ast_yyensure_buffer_stack (yyscanner);
    			YY_CURRENT_BUFFER_LVALUE =
    				ast_yy_create_buffer(yyin,YY_BUF_SIZE ,yyscanner);
    		}
    
    		ast_yy_load_buffer_state(yyscanner );
    		}
    
    	while ( 1 )		/* loops until end-of-file is reached */
    		{
    
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    		yyg->yy_more_len = 0;
    		if ( yyg->yy_more_flag )
    			{
    			yyg->yy_more_len = yyg->yy_c_buf_p - yyg->yytext_ptr;
    			yyg->yy_more_flag = 0;
    			}
    
    		yy_cp = yyg->yy_c_buf_p;
    
    		/* Support of yytext. */
    		*yy_cp = yyg->yy_hold_char;
    
    		/* yy_bp points to the position in yy_ch_buf of the start of
    		 * the current run.
    		 */
    		yy_bp = yy_cp;
    
    		yy_current_state = yyg->yy_start;
    yy_match:
    
    			register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
    
    			if ( yy_accept[yy_current_state] )
    				{
    				yyg->yy_last_accepting_state = yy_current_state;
    				yyg->yy_last_accepting_cpos = yy_cp;
    				}
    
    			while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
    				{
    				yy_current_state = (int) yy_def[yy_current_state];
    
    				if ( yy_current_state >= 63 )
    
    					yy_c = yy_meta[(unsigned int) yy_c];
    				}
    			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
    
    		while ( yy_current_state != 62 );
    
    		yy_cp = yyg->yy_last_accepting_cpos;
    		yy_current_state = yyg->yy_last_accepting_state;
    
    
    yy_find_action:
    		yy_act = yy_accept[yy_current_state];
    
    		YY_DO_BEFORE_ACTION;
    
    do_action:	/* This label is used only to access EOF actions. */
    
    		switch ( yy_act )
    	{ /* beginning of action switch */
    			case 0: /* must back up */
    			/* undo the effects of YY_DO_BEFORE_ACTION */
    			*yy_cp = yyg->yy_hold_char;
    
    			yy_cp = yyg->yy_last_accepting_cpos;
    
    			yy_current_state = yyg->yy_last_accepting_state;
    			goto yy_find_action;
    
    case 1:
    YY_RULE_SETUP
    
    #line 132 "ast_expr2.fl"
    
    { SET_COLUMNS; SET_STRING; return TOK_OR;}
    	YY_BREAK
    case 2:
    YY_RULE_SETUP
    
    #line 133 "ast_expr2.fl"
    
    { SET_COLUMNS; SET_STRING; return TOK_AND;}
    	YY_BREAK
    case 3:
    YY_RULE_SETUP
    
    #line 134 "ast_expr2.fl"
    
    { SET_COLUMNS; SET_STRING; return TOK_EQ;}
    	YY_BREAK
    case 4:
    YY_RULE_SETUP
    
    #line 135 "ast_expr2.fl"
    
    #line 136 "ast_expr2.fl"
    
    { SET_COLUMNS; SET_STRING; return TOK_AND;}
    
    #line 137 "ast_expr2.fl"
    
    #line 138 "ast_expr2.fl"
    
    { SET_COLUMNS; SET_STRING; return TOK_EQTILDE;}
    
    #line 139 "ast_expr2.fl"
    
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    { SET_COLUMNS; SET_STRING; return TOK_TILDETILDE;}
    
    #line 140 "ast_expr2.fl"
    
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    { SET_COLUMNS; SET_STRING; return TOK_GT;}
    
    #line 141 "ast_expr2.fl"
    
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    { SET_COLUMNS; SET_STRING; return TOK_LT;}