asm_scan.c

来自「代码检索工具GLOBAL源码。可用来浏览分析LINUX源码。」· C语言 代码 · 共 2,006 行 · 第 1/4 页

        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
        1,    1,    1,    1,    1,    1,    1,    1,    1,    1,
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       15,   19,   21,   19,   34,    5,   21,    6,   31,   34,
       40,    7,    8,   30,  165,   30,   40,   30,    9,   47,
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       11,   11,   11,   11,   11,   11,   11,   11,   22,   51,
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      169,  169,  169,  169,  169,  169,  169,  169,  169,  169,

      169
    } ;

static yy_state_type yy_state_buf[YY_BUF_SIZE + 2], *yy_state_ptr;
static char *yy_full_match;
static int yy_lp;
#define REJECT \
{ \
*yy_cp = yy_hold_char; /* undo effects of setting up yytext */ \
yy_cp = yy_full_match; /* restore poss. backed-over text */ \
++yy_lp; \
goto find_rule; \
}
#define yymore() yymore_used_but_not_detected
#define YY_MORE_ADJ 0
#define YY_RESTORE_YY_MORE_OFFSET
char *yytext;
#line 1 "asm_scan.l"
#define INITIAL 0
#line 2 "asm_scan.l"
/*
 * Copyright (c) 2002, 2004 Tama Communications Corporation
 *
 * This file is part of GNU GLOBAL.
 *
 * GNU GLOBAL is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * GNU GLOBAL is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
 */

#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#ifdef HAVE_STRING_H
#include <string.h>
#else
#include <strings.h>
#endif

#define YYLTYPE		int

#include "asm_parse.h"
#include "asm_res.h"
#include "die.h"
#include "gctags.h"
#include "linetable.h"
#include "strbuf.h"

#define lex_symbol_generation_rule(x) asm_ ## x
#define LEXTEXT lex_symbol_generation_rule(text)
#define LEXLENG lex_symbol_generation_rule(leng)
#define LEXLINENO lex_symbol_generation_rule(lineno)
#define LEXRESTART lex_symbol_generation_rule(restart)
#define LEXLVAL lex_symbol_generation_rule(lval)
#define LEXLLOC lex_symbol_generation_rule(lloc)

#define YY_INPUT(buf, result, max_size) do {				\
	if ((result = linetable_read(buf, max_size)) == -1)		\
		result = YY_NULL;					\
} while (0)

#define ADD_SYM() do {							\
	LEXLVAL = strbuf_getlen(asm_symtable);				\
	LEXLLOC = LEXLINENO;						\
	strbuf_puts0(asm_symtable, LEXTEXT);				\
} while (0)

extern const char *asm_input_file;
extern STRBUF *asm_symtable;

#define C_COMMENT 1
#define CPP_COMMENT 2
#define STRING 3
#define LITERAL 4

#define PREPROCESSOR_LINE 5

#define YY_STACK_USED 1
#define YY_NO_TOP_STATE 1
#line 637 "asm_scan.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

/* 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 80 "asm_scan.l"


 /* Ignore spaces */
#line 795 "asm_scan.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 ( ! 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_state_ptr = yy_state_buf;
		*yy_state_ptr++ = yy_current_state;
yy_match:
		do
			{
			register YY_CHAR yy_c = yy_ec[YY_SC_TO_UI(*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 >= 170 )
					yy_c = yy_meta[(unsigned int) yy_c];
				}
			yy_current_state = yy_nxt[yy_base[yy_current_state] + (unsigned int) yy_c];
			*yy_state_ptr++ = yy_current_state;
			++yy_cp;
			}
		while ( yy_base[yy_current_state] != 357 );

yy_find_action:
		yy_current_state = *--yy_state_ptr;
		yy_lp = yy_accept[yy_current_state];
find_rule: /* we branch to this label when backing up */
		for ( ; ; ) /* until we find what rule we matched */
			{
			if ( yy_lp && yy_lp < yy_accept[yy_current_state + 1] )
				{
				yy_act = yy_acclist[yy_lp];
					{
					yy_full_match = yy_cp;
					break;
					}
				}
			--yy_cp;
			yy_current_state = *--yy_state_ptr;
			yy_lp = yy_accept[yy_current_state];
			}

		YY_DO_BEFORE_ACTION;

		if ( yy_act != YY_END_OF_BUFFER )
			{
			int yyl;
			for ( yyl = 0; yyl < yyleng; ++yyl )
				if ( yytext[yyl] == '\n' )
					++yylineno;
			}

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


		switch ( yy_act )
	{ /* beginning of action switch */
case 1:
YY_RULE_SETUP
#line 83 "asm_scan.l"

	YY_BREAK
/* C style comment */
case 2:
YY_RULE_SETUP
#line 86 "asm_scan.l"
{ yy_push_state(C_COMMENT); }
	YY_BREAK

case 3:
YY_RULE_SETUP
#line 88 "asm_scan.l"

	YY_BREAK
case 4:
YY_RULE_SETUP
#line 89 "asm_scan.l"

	YY_BREAK
case 5:
YY_RULE_SETUP
#line 90 "asm_scan.l"

	YY_BREAK
case 6:
YY_RULE_SETUP
#line 91 "asm_scan.l"

	YY_BREAK
case 7:
YY_RULE_SETUP
#line 92 "asm_scan.l"
{ yy_pop_state(); }
	YY_BREAK
case YY_STATE_EOF(C_COMMENT):
#line 93 "asm_scan.l"
{
		if (wflag)
			warning("unexpected eof. [+%d %s]", LEXLINENO, asm_input_file);
		yyterminate();
	}
	YY_BREAK

/* C++ style line comment */
case 8:
YY_RULE_SETUP
#line 101 "asm_scan.l"
{ yy_push_state(CPP_COMMENT); }
	YY_BREAK

case 9:
YY_RULE_SETUP
#line 103 "asm_scan.l"

	YY_BREAK
case 10:
YY_RULE_SETUP
#line 104 "asm_scan.l"

	YY_BREAK
case 11:
YY_RULE_SETUP
#line 105 "asm_scan.l"
{ yy_pop_state(); unput('\n'); }
	YY_BREAK

/* String */
case 12:
YY_RULE_SETUP
#line 109 "asm_scan.l"
{ yy_push_state(STRING); }
	YY_BREAK

case 13:
YY_RULE_SETUP
#line 111 "asm_scan.l"

	YY_BREAK
case 14:
YY_RULE_SETUP
#line 112 "asm_scan.l"

	YY_BREAK
case 15:
YY_RULE_SETUP
#line 113 "asm_scan.l"
{ yy_pop_state(); unput('\n'); return ASM_CONST; }
	YY_BREAK
case 16:
YY_RULE_SETUP
#line 114 "asm_scan.l"
{ yy_pop_state(); return ASM_CONST; }
	YY_BREAK

/* Character */
case 17:
YY_RULE_SETUP
#line 118 "asm_scan.l"
{ yy_push_state(LITERAL); }
	YY_BREAK

case 18:
YY_RULE_SETUP
#line 120 "asm_scan.l"

	YY_BREAK
case 19:
YY_RULE_SETUP
#line 121 "asm_scan.l"

	YY_BREAK
case 20:
YY_RULE_SETUP
#line 122 "asm_scan.l"
{ yy_pop_state(); unput('\n'); return ASM_CONST; }
	YY_BREAK