testscan.c

生成C++的词法/语法分析的Flex语法分析器

#define FLEX_DEBUG
#define YY_CHAR unsigned char
# line 1 "/u/coetmeur/tools/flex++2/flexskel.cc"
/* A lexical scanner generated by flex */
/* scanner skeleton version:
 * $Header: /usr/fsys/odin/a/vern/flex/RCS/flex.skel,v 2.16 90/08/03 14:09:36 vern Exp $
 */
/* MODIFIED FOR C++ CLASS BY Alain Coetmeur: coetmeur(at)icdc.fr */
/* Note that (at) mean the 'at' symbol that I cannot write */
/* because it is expanded to the class name */
/* made at Informatique-CDC, Research&development department */
/* company from the Caisse Des Depots et Consignations */
/* institutional financial group (say 'Cat Doc Cad') */

/* theses symbols are added before this file */
/* #define YY_CHAR 'unsigned char' if 8bit or 'char' if 7bit */
/* #define FLEX_DEBUG if debug mode */
#define FLEX_SCANNER
/* cfront 1.2 defines "c_plusplus" instead of "__cplusplus" */
#ifdef c_plusplus
#ifndef __cplusplus
#define __cplusplus
#endif
#endif
#ifdef __cplusplus
#include <stdlib.h>
#define YY_USE_CONST
char *malloc();
int free();
int read();
#define YY_USE_PROTOS
#include <osfcn.h>
#else	/* ! __cplusplus */
#ifdef __STDC__
#ifdef __GNUC__
#include <stddef.h>
void *malloc( size_t );
void free( void* );
int read();
#else
#define YY_USE_CONST
#include <stdlib.h>
char *malloc();
int free();
int read();
#endif	/* __GNUC__ */
#define YY_USE_PROTOS
#endif	/* __STDC__ */
#endif	/* ! __cplusplus */
#ifdef __TURBOC__
#define YY_USE_CONST
#endif
#include <stdio.h>
/*********************************************/
/* COMPILER DEPENDENT   MACROS               */
/*********************************************/
/* use prototypes in function declarations */
/* the "const" storage-class-modifier is valid */
#ifndef YY_USE_CONST
#define const
#endif
/* use prototypes in function declarations */
#ifndef YY_PROTO
#ifdef YY_USE_PROTOS
#define YY_PROTO(proto) proto
#else
#define YY_PROTO(proto) ()
#endif
#endif


/*********************/
/* parameters        */

/* amount of stuff to slurp up with each read */
#ifndef YY_READ_BUF_SIZE
#define YY_READ_BUF_SIZE 8192
#endif
/* size of default input buffer */
#ifndef YY_BUF_SIZE
#define YY_BUF_SIZE (YY_READ_BUF_SIZE * 2) 
#endif

/***********************************/
/* to be redefined for application */

/* returned upon end-of-file */
#define YY_END_TOK 0
/* 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.
 */
#define yyterminate() return ( YY_NULL )

/* code executed at the end of each rule */
#define YY_BREAK break;

/* #define YY_USER_ACTION */
/* #define YY_USER_INIT */


#ifndef YY_USE_CLASS
/* copy whatever the last rule matched to the standard output */
/* cast to (char *) is because for 8-bit chars, yytext is (unsigned char *) */
/* this used to be an fputs(), but since the string might contain NUL's,
 * we now use fwrite()
 */
#define ECHO (void) fwrite( (char *) yytext, yyleng, 1, yyout )

/* gets input and stuffs it into "buf".  number of characters read, or YY_NULL,
 * is returned in "result".
 */
#define YY_INPUT(buf,result,max_size) \
	if ( (result = read( fileno(yyin), (char *) buf, max_size )) < 0 ) \
	    YY_FATAL_ERROR( "read() in flex scanner failed" );

/* report a fatal error */

/* The funky do-while is used to turn this macro definition into
 * a single C statement (which needs a semi-colon terminator).
 * This avoids problems with code like:
 *
 * 	if ( something_happens )
 *		YY_FATAL_ERROR( "oops, the something happened" );
 *	else
 *		everything_okay();
 *
 * 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 YY_FATAL_ERROR() call.
 */

#define YY_FATAL_ERROR(msg) \
	do \
		{ \
		(void) fputs( msg, stderr ); \
		(void) putc( '\n', stderr ); \
		exit( 1 ); \
		} \
	while ( 0 )

/* default yywrap function - always treat EOF as an EOF */
#define yywrap() 1


/* default declaration of generated scanner - a define so the user can
 * easily add parameters
 */
#define YY_DECL int yylex YY_PROTO(( void )) 
#else 
/* c++ */
#define ECHO (void) fwrite( (char *) yytext, yyleng, 1, yyout )
#define YY_INPUT(buf,result,max_size) \
	if ( yy_input((char *)buf, result,max_size) < 0 ) \
	    YY_FATAL_ERROR( "yy_input() in flex scanner failed" );

#define YY_FATAL_ERROR(msg) yy_fatal_error(msg)
#define yywrap() yy_wrap()

#endif
/***********************************/
/* not to be changed */
#define YY_NULL 0
#define YY_END_OF_BUFFER_CHAR 0
/* special action meaning "start processing a new file" */
#define YY_NEW_FILE \
	do \
		{ \
		yy_init_buffer( yy_current_buffer, yyin ); \
		yy_load_buffer_state(); \
		} \
	while ( 0 )
/* 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 *

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



/* % section 1 definitions go here */ 
# line 1 "scan.l"
#define INITIAL 0
/* scan.l - scanner for flex input */
# line 5 "scan.l"
/*-
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Vern Paxson.
 * 
 * The United States Government has rights in this work pursuant
 * to contract no. DE-AC03-76SF00098 between the United States
 * Department of Energy and the University of California.
 *
 * Redistribution and use in source and binary forms are permitted provided
 * that: (1) source distributions retain this entire copyright notice and
 * comment, and (2) distributions including binaries display the following
 * acknowledgement:  ``This product includes software developed by the
 * University of California, Berkeley and its contributors'' in the
 * documentation or other materials provided with the distribution and in
 * all advertising materials mentioning features or use of this software.
 * Neither the name of the University nor the names of its contributors may
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
static char rcsid[] =
    "@(#) $Header: /usr/fsys/odin/a/vern/flex/RCS/scan.l,v 2.9 90/06/27 23:48:34 vern Exp $ (LBL)";
#endif

#undef yywrap

#include "flexdef.h"
#include "parse.h"

#define HEADER_ECHO fprintf(headerfile,"%s",yytext )
#define ACTION_ECHO fprintf( temp_action_file, "%s", yytext )
#define MARK_END_OF_PROLOG fprintf( temp_action_file, "%%%% end of prolog\n" );

#undef YY_DECL
#define YY_DECL \
	int flexscan()

#define RETURNCHAR \
	yylval = yytext[0]; \
	return ( CHAR );

#define RETURNNAME \
	(void) strcpy( nmstr, (char *) yytext ); \
	return ( NAME );

#define PUT_BACK_STRING(str, start) \
	for ( i = strlen( (char *) (str) ) - 1; i >= start; --i ) \
	    unput((str)[i])

#define CHECK_REJECT(str) \
	if ( all_upper( str ) ) \
	    reject = true;

#define CHECK_YYMORE(str) \
	if ( all_lower( str ) ) \
	    yymore_used = true;