ibrowser.c

linux 下的源代码分析阅读器 red hat公司新版

    emit_func_defn();
    return( 1 );
}

void
setLower				/* set character string to lower case		*/
    ( char * p				/* pointer to start of NULL-terminated string	*/
    )
{
    while ( *p )
    {
	if ( isupper( *p ) ) *p = tolower( *p );
	p++;
    }
}

#define MACRO 1


/* 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 \
		{ \
		errno=0; \
		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 )
#endif

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

/* 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 \
	if ( yyleng > 0 ) \
		yy_current_buffer->yy_at_bol = \
				(yytext[yyleng - 1] == '\n'); \
	YY_USER_ACTION

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

#line 148 "ibrowser.l"



	if ( yy_init )
		{
		yy_init = 0;

#ifdef YY_USER_INIT
		YY_USER_INIT;
#endif

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

		if ( ! yyin )
			yyin = stdin;

		if ( ! yyout )
			yyout = stdout;

		if ( ! yy_current_buffer )
			yy_current_buffer =
				yy_create_buffer( yyin, YY_BUF_SIZE );

		yy_load_buffer_state();
		}

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

		/* Support of yytext. */
		*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_current_state += YY_AT_BOL();
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 >= 284 )
					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] != 1063 );

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 150 "ibrowser.l"
{

    /* walk over the indentation (if any) */
    for ( p = yytext; isspace( *p ); sn_advance_column( 1 ), p++ );

    /* walk over the include directive */
    for ( ; !isspace( *p ); sn_advance_column( 1 ), p++ );

    /* walk over the white space between directive and filename */
    for ( ; isspace( *p ); sn_advance_column( 1 ), p++ );

    setLower( p );
    sn_insert_symbol( SN_INCLUDE_DEF	/* symbol type			*/
  		, NULL			/* class name			*/
		, p			/* identifier			*/
		, sn_current_file()	/* file name			*/
		, sn_line()		/* start line number		*/
		, sn_column()		/* start column number		*/
		, sn_line()		/* end line number		*/
		, sn_column() + strlen(p)
				  	/* end column number		*/
		, 0			/* attributes			*/
		, NULL			/* return types			*/
		, NULL			/* argument types		*/
		, NULL			/* argument names		*/
		, NULL			/* comment			*/
		, sn_line()		/* highlighting start line	*/
		, sn_column()		/* highlighting start column	*/
		, sn_line()		/* highlighting end line	*/
		, sn_column() + strlen(p)
				  	/* highlighting end column	*/
		);

    sn_advance_column( yytext + yyleng - p );
}
	YY_BREAK
case 2:
YY_RULE_SETUP
#line 186 "ibrowser.l"
{

    /* walk over the jump instruction mnemonic */
    for ( p = yytext; !isspace( *p ); p++ );

    /* walk over the whitespace between the opcode and the operand */
    for ( ; isspace( *p ); p++ );

    setLower( p );
    /* local labels are either '[0-9]+$' or '\?\?[0-9]+' which are
     * not valid {symbolname}s so we only get here if the target
     * of the (call|jmp) is a global symbol
     */
    sn_insert_xref( SN_REF_TO_FUNCTION	/* referenced symbol type	*/
		, SN_FUNC_DEF		/* scope type			*/
		, SN_REF_SCOPE_GLOBAL	/* scope level			*/
		, NULL			/* class name			*/
		, last_label.name	/* calling function name	*/
		, NULL			/* argument types		*/
		, NULL			/* namespace of symbol		*/
		, p			/* referenced symbol		*/
		, NULL			/* referenced argument types	*/
		, sn_current_file()	/* file name			*/
		, sn_line()		/* line number			*/
		, SN_REF_PASS		/* access type			*/
		);
    sn_advance_column( yyleng );
}
	YY_BREAK
case 3:
YY_RULE_SETUP
#line 215 "ibrowser.l"
{

    /* walk over the indentation (if any) */
    for ( p = yytext; isspace( *p ); sn_advance_column( 1 ), p++ );

    /* remember where macro name starts */
    savep = p;
    last_macro.column = sn_column();

    /* walk over the macro name */
    for ( ; !isspace( *p ); sn_advance_column( 1 ), p++ );
    *p = 0;				/* NULL-terminate macro name	*/

    setLower( savep );
    strcpy( last_macro.name, savep );
    last_macro.line = sn_line();
    last_macro.length = strlen( savep );
    last_macro.flag = 1;

    sn_advance_column( yytext + yyleng - p );
    BEGIN( MACRO );
}
	YY_BREAK
case 4:
YY_RULE_SETUP
#line 238 "ibrowser.l"
{
    last_macro.flag++;			/* handle nested macros */
    sn_advance_column( yyleng );
}
	YY_BREAK
case 5:
YY_RULE_SETUP
#line 243 "ibrowser.l"
{		/* throw away any macro definition */
      sn_advance_column( yyleng );
}
	YY_BREAK
case 6:
YY_RULE_SETUP
#line 247 "ibrowser.l"
{		/* throw away any macro definition */
      sn_advance_line();
      sn_reset_column();
}
	YY_BREAK
case 7:
YY_RULE_SETUP
#line 252 "ibrowser.l"
{

    sn_advance_column( yyleng );
    last_macro.flag--;
    if ( last_macro.flag == 0 )
    {
	sn_insert_symbol( SN_MACRO_DEF	/* symbol type			*/
		, NULL			/* class name			*/
		, last_macro.name	/* identifier			*/
		, sn_current_file()	/* file name			*/
		, last_macro.line	/* start line number		*/
		, last_macro.column	/* start column number		*/
		, sn_line()		/* end line number		*/
		, sn_column()		/* end column number		*/
		, 0			/* attributes			*/
		, NULL			/* return types			*/
		, NULL			/* argument types		*/
		, NULL			/* argument names		*/
		, NULL			/* comment			*/
		, last_macro.line	/* highlighting start line	*/
		, last_macro.column	/* highlighting start column	*/
		, last_macro.line	/* highlighting end line	*/
		, last_macro.column + last_macro.length