graphviz_digraph_lex.cpp

boost库提供标准的C++ API 配合dev c++使用,功能更加强大

char *bgl_dir_text;
#line 1 "graphviz_lex.l"
#define INITIAL 0
#line 2 "graphviz_lex.l"
//=======================================================================
// Copyright 2001 University of Notre Dame.
// Author: Lie-Quan Lee
//
// This file is part of the Boost Graph Library
//
// You should have received a copy of the License Agreement for the
// Boost Graph Library along with the software; see the file LICENSE.
// If not, contact Office of Research, University of Notre Dame, Notre
// Dame, IN 46556.
//
// Permission to modify the code and to distribute modified code is
// granted, provided the text of this NOTICE is retained, a notice that
// the code was modified is included with the above COPYRIGHT NOTICE and
// with the COPYRIGHT NOTICE in the LICENSE file, and that the LICENSE
// file is distributed with the modified code.
//
// LICENSOR MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED.
// By way of example, but not limitation, Licensor MAKES NO
// REPRESENTATIONS OR WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY
// PARTICULAR PURPOSE OR THAT THE USE OF THE LICENSED SOFTWARE COMPONENTS
// OR DOCUMENTATION WILL NOT INFRINGE ANY PATENTS, COPYRIGHTS, TRADEMARKS
// OR OTHER RIGHTS.
//=======================================================================

#include "graphviz_parser.h"

#include <string>
#include <iostream>

static std::string literal;
static void begin_literal();
static void add_string(const char* str);
static void end_literal();

#include "yystype.h"
#define YY_DECL   int bgl_dir_lex(YYSTYPE* lvalp)
#define Comment 1

#define Literal 2

#line 475 "lex.yy.c"

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

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

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

#ifndef bgl_dir_text_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 bgl_dir_input 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( bgl_dir_text, bgl_dir_leng, 1, bgl_dir_out )
#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( bgl_dir_in )) != EOF && c != '\n'; ++n ) \
                        buf[n] = (char) c; \
                if ( c == '\n' ) \
                        buf[n++] = (char) c; \
                if ( c == EOF && ferror( bgl_dir_in ) ) \
                        YY_FATAL_ERROR( "input in flex scanner failed" ); \
                result = n; \
                } \
        else if ( ((result = fread( buf, 1, max_size, bgl_dir_in )) == 0) \
                  && ferror( bgl_dir_in ) ) \
                YY_FATAL_ERROR( "input in flex scanner failed" );
#endif

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

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

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

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

/* Code executed at the beginning of each rule, after bgl_dir_text and bgl_dir_leng
 * have been set up.
 */
#ifndef YY_USER_ACTION
#define YY_USER_ACTION
#endif

/* Code executed at the end of each rule. */
#ifndef YY_BREAK
#define YY_BREAK break;
#endif

#define YY_RULE_SETUP \
        YY_USER_ACTION

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

#line 51 "graphviz_lex.l"


#line 629 "lex.yy.c"

        if ( yy_init )
                {
                yy_init = 0;

#ifdef YY_USER_INIT
                YY_USER_INIT;
#endif

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

                if ( ! bgl_dir_in )
                        bgl_dir_in = stdin;

                if ( ! bgl_dir_out )
                        bgl_dir_out = stdout;

                if ( ! yy_current_buffer )
                        yy_current_buffer =
                                bgl_dir_create_buffer( bgl_dir_in, YY_BUF_SIZE );

                bgl_dir_load_buffer_state();
                }

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

                /* Support of bgl_dir_text. */
                *yy_cp = yy_hold_char;

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

                yy_current_state = yy_start;
yy_match:
                do
                        {
                        register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*yy_cp)];
                        if ( yy_accept[yy_current_state] )
                                {
                                yy_last_accepting_state = yy_current_state;
                                yy_last_accepting_cpos = yy_cp;
                                }
                        while ( yy_chk[yy_base[yy_current_state] + yy_c] != yy_current_state )
                                {
                                yy_current_state = (int) yy_def[yy_current_state];
                                if ( yy_current_state >= 81 )
                                        yy_c = yy_meta[(unsigned int) yy_c];
                                }
                        yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
                        ++yy_cp;
                        }
                while ( yy_base[yy_current_state] != 169 );

yy_find_action:
                yy_act = yy_accept[yy_current_state];
                if ( yy_act == 0 )
                        { /* have to back up */
                        yy_cp = yy_last_accepting_cpos;
                        yy_current_state = yy_last_accepting_state;
                        yy_act = yy_accept[yy_current_state];
                        }

                YY_DO_BEFORE_ACTION;


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


                switch ( yy_act )
        { /* beginning of action switch */
                        case 0: /* must back up */
                        /* undo the effects of YY_DO_BEFORE_ACTION */
                        *yy_cp = yy_hold_char;
                        yy_cp = yy_last_accepting_cpos;
                        yy_current_state = yy_last_accepting_state;
                        goto yy_find_action;

case 1:
YY_RULE_SETUP
#line 53 "graphviz_lex.l"
{ BEGIN Comment; }
        YY_BREAK
case 2:
YY_RULE_SETUP
#line 54 "graphviz_lex.l"
{ BEGIN INITIAL; }
        YY_BREAK
case 3:
YY_RULE_SETUP
#line 55 "graphviz_lex.l"
;
        YY_BREAK
case 4:
*yy_cp = yy_hold_char; /* undo effects of setting up bgl_dir_text */
yy_c_buf_p = yy_cp -= 1;
YY_DO_BEFORE_ACTION; /* set up bgl_dir_text again */
YY_RULE_SETUP
#line 56 "graphviz_lex.l"
;
        YY_BREAK
case 5:
*yy_cp = yy_hold_char; /* undo effects of setting up bgl_dir_text */
yy_c_buf_p = yy_cp -= 1;
YY_DO_BEFORE_ACTION; /* set up bgl_dir_text again */
YY_RULE_SETUP
#line 57 "graphviz_lex.l"
;
        YY_BREAK
case 6:
YY_RULE_SETUP
#line 58 "graphviz_lex.l"
{ return DIGRAPH_T; }
        YY_BREAK
case 7:
YY_RULE_SETUP
#line 59 "graphviz_lex.l"
{ return GRAPH_T; }
        YY_BREAK
case 8:
YY_RULE_SETUP
#line 60 "graphviz_lex.l"
{ return NODE_T; }
        YY_BREAK
case 9:
YY_RULE_SETUP
#line 61 "graphviz_lex.l"
{ return EDGE_T; }
        YY_BREAK
case 10:
YY_RULE_SETUP
#line 62 "graphviz_lex.l"
;
        YY_BREAK
case 11:
YY_RULE_SETUP
#line 63 "graphviz_lex.l"
{ return SUBGRAPH_T; }
        YY_BREAK
case 12:
YY_RULE_SETUP
#line 64 "graphviz_lex.l"
{ return EDGEOP_T; }
        YY_BREAK
case 13:
YY_RULE_SETUP
#line 65 "graphviz_lex.l"
{ lvalp->ptr = (void*)(new std::string(bgl_dir_text)); return ID_T; }
        YY_BREAK
case 14:
YY_RULE_SETUP
#line 66 "graphviz_lex.l"
{ BEGIN Literal; begin_literal();  }
        YY_BREAK
case 15:
YY_RULE_SETUP
#line 67 "graphviz_lex.l"
{ BEGIN INITIAL; end_literal(); lvalp->ptr = (void*)(new std::string(literal)); return ID_T; }
        YY_BREAK
case 16:
YY_RULE_SETUP
#line 68 "graphviz_lex.l"
;
        YY_BREAK
case 17:
YY_RULE_SETUP
#line 69 "graphviz_lex.l"
{ add_string(bgl_dir_text); }
        YY_BREAK
case 18:
YY_RULE_SETUP
#line 70 "graphviz_lex.l"
;
        YY_BREAK
case 19:
YY_RULE_SETUP
#line 71 "graphviz_lex.l"
;
        YY_BREAK
case 20:
YY_RULE_SETUP
#line 72 "graphviz_lex.l"
{ return bgl_dir_text[0]; }
        YY_BREAK
case 21:
YY_RULE_SETUP
#line 73 "graphviz_lex.l"
ECHO;
        YY_BREAK
#line 823 "lex.yy.c"
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(Comment):
case YY_STATE_EOF(Literal):
        yyterminate();

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

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

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

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