ce_lex.cpp

doxygen(一个自动从源代码生成文档的工具)的源代码

#define yy_create_buffer cppExpYY_create_buffer
#define yy_delete_buffer cppExpYY_delete_buffer
#define yy_scan_buffer cppExpYY_scan_buffer
#define yy_scan_string cppExpYY_scan_string
#define yy_scan_bytes cppExpYY_scan_bytes
#define yy_flex_debug cppExpYY_flex_debug
#define yy_init_buffer cppExpYY_init_buffer
#define yy_flush_buffer cppExpYY_flush_buffer
#define yy_load_buffer_state cppExpYY_load_buffer_state
#define yy_switch_to_buffer cppExpYY_switch_to_buffer
#define yyin cppExpYYin
#define yyleng cppExpYYleng
#define yylex cppExpYYlex
#define yyout cppExpYYout
#define yyrestart cppExpYYrestart
#define yytext cppExpYYtext
#define yywrap cppExpYYwrap

/* A lexical scanner generated by flex */

/* Scanner skeleton version:
 * $Header: /home/daffy/u0/vern/flex/RCS/flex.skl,v 2.91 96/09/10 16:58:48 vern Exp $
 */

#define FLEX_SCANNER
#define YY_FLEX_MAJOR_VERSION 2
#define YY_FLEX_MINOR_VERSION 5

#include <stdio.h>


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


#ifdef __cplusplus

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

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

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

#else	/* ! __cplusplus */

#if __STDC__

#define YY_USE_PROTOS
#define YY_USE_CONST

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

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

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


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

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

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

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

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

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

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

#define YY_END_OF_BUFFER_CHAR 0

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

typedef struct yy_buffer_state *YY_BUFFER_STATE;

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

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

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

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

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

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

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


struct yy_buffer_state
	{
	FILE *yy_input_file;

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

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

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

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

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

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

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

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

static YY_BUFFER_STATE yy_current_buffer = 0;

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


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

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


int yyleng;

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

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

void yyrestart YY_PROTO(( FILE *input_file ));

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

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

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

#define yy_new_buffer yy_create_buffer

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

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

#define YY_AT_BOL() (yy_current_buffer->yy_at_bol)

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

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

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

#define YY_NUM_RULES 33
#define YY_END_OF_BUFFER 34
static yyconst short int yy_accept[62] =
    {   0,
        0,    0,   34,   31,   32,   22,   20,    7,   31,   23,
       24,   18,   16,   17,   31,   19,   26,   27,    2,   10,
       31,   11,    1,    6,    5,   21,    8,    4,    0,    0,
       29,   29,   26,    0,    0,   26,    0,   27,   27,   14,
       12,    9,   13,   15,    3,   25,    0,    0,    0,    0,
       29,   29,    0,   30,   28,    0,    0,   29,   30,   28,
        0
    } ;

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

       25,   33,    1,    1,    1,    1,    1,   27,    1,    5,
        1,    1,    1,    5,    1,    5,   28,    5,    1,   34,
        1,    1,    1,   35,    1,   36,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,

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

static yyconst int yy_meta[37] =
    {   0,
        1,    2,    2,    1,    1,    1,    1,    2,    1,    1,
        1,    1,    1,    1,    1,    3,    3,    3,    1,    1,
        1,    1,    1,    3,    3,    3,    1,    1,    1,    1,
        1,    3,    3,    1,    1,    1
    } ;

static yyconst short int yy_base[65] =
    {   0,
        0,    0,  130,  163,  163,   88,  163,   92,   65,  163,
      163,  163,  163,  163,   21,  163,   26,   47,  163,   25,
       57,   26,  163,  163,   38,  163,  163,  163,   41,   71,
       90,   40,   33,   52,   68,   55,    0,    0,   63,  163,
      163,  163,  163,  163,  163,  163,   51,   94,    0,   80,
      163,    0,  102,  108,   86,   44,  111,  126,  163,   94,
      163,  159,   47,   38
    } ;

static yyconst short int yy_def[65] =
    {   0,
       61,    1,   61,   61,   61,   61,   61,   61,   62,   61,
       61,   61,   61,   61,   61,   61,   61,   61,   61,   61,
       61,   61,   61,   61,   61,   61,   61,   61,   62,   61,
       61,   31,   17,   61,   61,   61,   63,   18,   61,   61,
       61,   61,   61,   61,   61,   61,   61,   61,   64,   61,
       61,   32,   61,   61,   63,   64,   61,   61,   61,   61,
        0,   61,   61,   61
    } ;

static yyconst short int yy_nxt[200] =
    {   0,
        4,    5,    4,    6,    4,    7,    8,    9,   10,   11,
       12,   13,   14,   15,   16,   17,   18,   18,   19,   20,
       21,   22,   23,    4,    4,    4,    4,    4,    4,    4,
       24,    4,    4,    4,   25,   26,   31,   31,   31,   32,
       56,   33,   33,   34,   40,   41,   43,   44,   46,   55,
       35,   46,   36,   36,   37,   52,   52,   52,   46,   37,
       32,   61,   38,   38,   38,   32,   61,   34,   34,   34,
       61,   35,   45,   39,   39,   47,   35,   42,   47,   53,
       53,   36,   36,   54,   54,   54,   48,   48,   48,   39,
       39,   57,   57,   47,   30,   58,   58,   58,   28,   49,

       47,   46,   47,   47,   49,   31,   31,   31,   27,   48,
       48,   48,   60,   60,   50,   51,   51,   54,   54,   54,
       60,   60,   51,   54,   54,   54,   58,   58,   58,   61,
       61,   61,   61,   59,   59,   61,   61,   61,   61,   61,
       59,   58,   58,   58,   61,   61,   61,   61,   61,   61,
       61,   51,   51,   61,   61,   61,   61,   61,   51,   29,
       61,   29,    3,   61,   61,   61,   61,   61,   61,   61,
       61,   61,   61,   61,   61,   61,   61,   61,   61,   61,
       61,   61,   61,   61,   61,   61,   61,   61,   61,   61,
       61,   61,   61,   61,   61,   61,   61,   61,   61

    } ;

static yyconst short int yy_chk[200] =
    {   0,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,   15,   15,   15,   17,
       64,   17,   17,   17,   20,   20,   22,   22,   29,   63,
       17,   56,   17,   17,   17,   32,   32,   32,   47,   17,
       18,   33,   18,   18,   18,   34,   33,   34,   34,   34,
       29,   18,   25,   18,   18,   30,   34,   21,   30,   35,
       35,   36,   36,   35,   35,   35,   30,   30,   30,   39,
       39,   50,   50,   30,    9,   50,   50,   50,    8,   30,

       30,   48,   30,   30,   30,   31,   31,   31,    6,   48,
       48,   48,   55,   55,   31,   31,   31,   53,   53,   53,
       60,   60,   31,   54,   54,   54,   57,   57,   57,    3,
        0,    0,    0,   54,   54,    0,    0,    0,    0,    0,
       54,   58,   58,   58,    0,    0,    0,    0,    0,    0,
        0,   58,   58,    0,    0,    0,    0,    0,   58,   62,
        0,   62,   61,   61,   61,   61,   61,   61,   61,   61,
       61,   61,   61,   61,   61,   61,   61,   61,   61,   61,
       61,   61,   61,   61,   61,   61,   61,   61,   61,   61,
       61,   61,   61,   61,   61,   61,   61,   61,   61

    } ;

static yy_state_type yy_last_accepting_state;
static char *yy_last_accepting_cpos;

/* The intent behind this definition is that it'll catch
 * any uses of REJECT which flex missed.
 */
#define REJECT reject_used_but_not_detected
#define yymore() yymore_used_but_not_detected
#define YY_MORE_ADJ 0
#define YY_RESTORE_YY_MORE_OFFSET
char *yytext;
#line 1 "constexp.l"
#define INITIAL 0
/******************************************************************************
 *
 * $Id: constexp.l,v 1.11 2001/03/19 19:27:40 root Exp $
 *
 *
 * Copyright (C) 1997-2001 by Dimitri van Heesch.
 *
 * Permission to use, copy, modify, and distribute this software and its
 * documentation under the terms of the GNU General Public License is hereby 
 * granted. No representations are made about the suitability of this software 
 * for any purpose. It is provided "as is" without express or implied warranty.
 * See the GNU General Public License for more details.
 *
 * Documents produced by Doxygen are derivative works derived from the
 * input used in their production; they are not affected by this license.
 *
 */
#line 20 "constexp.l"

#include "constexp.h"  
#include "cppvalue.h"
#include "ce_parse.h" // generated header file

#define YY_NO_UNPUT
#define YY_NEVER_INTERACTIVE 1
  
QCString    g_strToken;  
CPPValue    g_resultValue;
int         g_constExpLineNr;
QCString    g_constExpFileName;

static const char *g_inputString;
static int         g_inputPosition;

#undef  YY_INPUT
#define YY_INPUT(buf,result,max_size) result=yyread(buf,max_size);

static int yyread(char *buf,int max_size)
{
  int c=0;
  while( c < max_size && g_inputString[g_inputPosition] )
  {
    *buf = g_inputString[g_inputPosition++] ;
    c++; buf++;
  }
  return c;
}


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

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

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

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

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

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

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

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

#ifdef YY_MALLOC_DECL
YY_MALLOC_DECL
#else
#if __STDC__
#ifndef __cplusplus
#include <stdlib.h>
#endif
#else
/* Just try to get by without declaring the routines.  This will fail
 * miserably on non-ANSI systems for which sizeof(size_t) != sizeof(int)
 * or sizeof(void*) != sizeof(int).
 */
#endif
#endif

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

/* Copy whatever the last rule matched to the standard output. */

#ifndef ECHO
/* This used to be an fputs(), but since the string might contain NUL's,
 * we now use fwrite().
 */
#define ECHO (void) fwrite( yytext, yyleng, 1, yyout )
#endif

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

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