scan_isa.cpp

arm的模拟器

#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 52 "scan_isa.l"


#line 564 "scan_isa.cpp"

	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 = &cin;

		if ( ! yyout )
			yyout = &cout;

		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_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 >= 64 )
					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] != 111 );

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 54 "scan_isa.l"
{
			isa_lval.strval = strdup(YYText()+1);
			isa_lval.strval[YYLeng()-2]=0;
			return TK_STR;
			}
	YY_BREAK
case 2:
YY_RULE_SETUP
#line 60 "scan_isa.l"
return TK_GRP;
	YY_BREAK
case 3:
YY_RULE_SETUP
#line 61 "scan_isa.l"
BEGIN(opdec); return TK_OP;
	YY_BREAK
case 4:
YY_RULE_SETUP
#line 63 "scan_isa.l"
{
			isa_lval.sym_t = symbol_find_or_insert(YYText());
			return TK_IDENT;
			}
	YY_BREAK
case 5:
YY_RULE_SETUP
#line 68 "scan_isa.l"
return ':';
	YY_BREAK
case 6:
YY_RULE_SETUP
#line 69 "scan_isa.l"
return '(';
	YY_BREAK
case 7:
YY_RULE_SETUP
#line 70 "scan_isa.l"
BEGIN(INITIAL); return ')';
	YY_BREAK
case 8:
YY_RULE_SETUP
#line 71 "scan_isa.l"
{
			isa_lval.strval = strdup(YYText());
			return TK_PAT;
			}
	YY_BREAK
case 9:
YY_RULE_SETUP
#line 75 "scan_isa.l"

	YY_BREAK
case 10:
YY_RULE_SETUP
#line 76 "scan_isa.l"

	YY_BREAK
case 11:
YY_RULE_SETUP
#line 78 "scan_isa.l"
return TK_VAR;
	YY_BREAK
case 12:
YY_RULE_SETUP
#line 79 "scan_isa.l"
return TK_FIELD;
	YY_BREAK
case 13:
YY_RULE_SETUP
#line 81 "scan_isa.l"
isa_lval.sym_t = symbol_find_or_insert(YYText()); return TK_IDENT;
	YY_BREAK
case 14:
YY_RULE_SETUP
#line 82 "scan_isa.l"
isa_lval.uint = atoi(YYText()); return TK_NUM;
	YY_BREAK
case 15:
YY_RULE_SETUP
#line 84 "scan_isa.l"
BEGIN(comment);
	YY_BREAK
case 16:
YY_RULE_SETUP
#line 85 "scan_isa.l"
BEGIN(INITIAL);
	YY_BREAK
case 17:
YY_RULE_SETUP
#line 86 "scan_isa.l"
/*ignore*/
	YY_BREAK
case 18:
YY_RULE_SETUP
#line 88 "scan_isa.l"
BEGIN(mcomment);
	YY_BREAK
case 19:
YY_RULE_SETUP
#line 89 "scan_isa.l"
BEGIN(INITIAL);
	YY_BREAK
case 20:
YY_RULE_SETUP
#line 90 "scan_isa.l"
/*ignore*/
	YY_BREAK
case 21:
YY_RULE_SETUP
#line 92 "scan_isa.l"
return '{';
	YY_BREAK
case 22:
YY_RULE_SETUP
#line 93 "scan_isa.l"
return '}';
	YY_BREAK
case 23:
YY_RULE_SETUP
#line 94 "scan_isa.l"
return ':';
	YY_BREAK
case 24:
YY_RULE_SETUP
#line 95 "scan_isa.l"
return '=';
	YY_BREAK
case 25:
YY_RULE_SETUP
#line 96 "scan_isa.l"
return ';';
	YY_BREAK
case 26:
YY_RULE_SETUP
#line 98 "scan_isa.l"

	YY_BREAK
case 27:
YY_RULE_SETUP
#line 99 "scan_isa.l"

	YY_BREAK
case YY_STATE_EOF(INITIAL):
case YY_STATE_EOF(opdec):
case YY_STATE_EOF(comment):
case YY_STATE_EOF(mcomment):
#line 100 "scan_isa.l"
return 0;
	YY_BREAK
case 28:
YY_RULE_SETUP
#line 102 "scan_isa.l"
{
			 isa_lexerror(*YYText());
			}
	YY_BREAK
case 29:
YY_RULE_SETUP
#line 106 "scan_isa.l"
ECHO;
	YY_BREAK
#line 819 "scan_isa.cpp"

	case YY_END_OF_BUFFER:
		{
		/* Amount of text matched not including the EOB char. */
		int yy_amount_of_matched_text = (int) (yy_cp - yytext_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 yyin at a new source and called
			 * yylex().  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 = yyin;
			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] )
			{ /* This was really a NUL. */
			yy_state_type yy_next_state;

			yy_c_buf_p = yytext_ptr + yy_amount_of_matched_text;

			yy_current_state = yy_get_previous_state();

			/* Okay, we're now positioned to make the NUL
			 * transition.  We couldn't have
			 * yy_get_previous_state() go ahead and do it
			 * for us because it doesn't know how to deal
			 * with the possibility of jamming (and we don't
			 * want to build jamming into it because then it
			 * will run more slowly).
			 */

			yy_next_state = yy_try_NUL_trans( yy_current_state );

			yy_bp = yytext_ptr + YY_MORE_ADJ;

			if ( yy_next_state )
				{
				/* Consume the NUL. */
				yy_cp = ++yy_c_buf_p;
				yy_current_state = yy_next_state;
				goto yy_match;
				}

			else
				{
				yy_cp = yy_c_buf_p;
				goto yy_find_action;
				}
			}

		else switch ( yy_get_next_buffer() )
			{
			case EOB_ACT_END_OF_FILE:
				{
				yy_did_buffer_switch_on_eof = 0;

				if ( yywrap() )
					{
					/* Note: because we've taken care in
					 * yy_get_next_buffer() to have set up
					 * yytext, we can now set up
					 * yy_c_buf_p so that if some total
					 * hoser (like flex itself) wants to
					 * call the scanner after we return the
					 * YY_NULL, it'll still work - another
					 * YY_NULL will get returned.
					 */
					yy_c_buf_p = yytext_ptr + YY_MORE_ADJ;

					yy_act = YY_STATE_EOF(YY_START);
					goto do_action;
					}

				else
					{
					if ( ! yy_did_buffer_switch_on_eof )
						YY_NEW_FILE;
					}
				break;
				}

			case EOB_ACT_CONTINUE_SCAN:
				yy_c_buf_p =
					yytext_ptr + yy_amount_of_matched_text;

				yy_current_state = yy_get_previous_state();

				yy_cp = yy_c_buf_p;
				yy_bp = yytext_ptr + YY_MORE_ADJ;
				goto yy_match;

			case EOB_ACT_LAST_MATCH:
				yy_c_buf_p =
				&yy_current_buffer->yy_ch_buf[yy_n_chars];

				yy_current_state = yy_get_previous_state();

				yy_cp = yy_c_buf_p;
				yy_bp = yytext_ptr + YY_MORE_ADJ;
				goto yy_find_action;
			}
		break;
		}

	default:
		YY_FATAL_ERROR(
			"fatal flex scanner internal error--no action found" );
	} /* end of action switch */
		} /* end of scanning one token */
	} /* end of yylex */

yyFlexLexer::yyFlexLexer( istream* arg_yyin, ostream* arg_yyout )
	{
	yyin = arg_yyin;
	yyout = arg_yyout;
	yy_c_buf_p = 0;
	yy_init = 1;
	yy_start = 0;
	yy_flex_debug = 0;
	yylineno = 1;	// this will only get updated if %option yylineno

	yy_did_buffer_switch_on_eof = 0;

	yy_looking_for_trail_begin = 0;
	yy_more_flag = 0;
	yy_more_len = 0;
	yy_more_offset = yy_prev_more_offset = 0;

	yy_start_stack_ptr = yy_start_stack_depth = 0;
	yy_start_stack = 0;

	yy_current_buffer = 0;

#ifdef YY_USES_REJECT
	yy_state_buf = new yy_state_type[YY_BUF_SIZE + 2];
#else
	yy_state_buf = 0;
#endif
	}

yyFlexLexer::~yyFlexLexer()
	{
	delete yy_state_buf;
	yy_delete_buffer( yy_current_buffer );
	}

void yyFlexLexer::switch_streams( istream* new_in, ostream* new_out )
	{
	if ( new_in )
		{
		yy_delete_buffer( yy_current_buffer );
		yy_switch_to_buffer( yy_create_buffer( new_in, YY_BUF_SIZE ) );
		}

	if ( new_out )
		yyout = new_out;
	}

#ifdef YY_INTERACTIVE
int yyFlexLexer::LexerInput( char* buf, int /* max_size */ )
#else
int yyFlexLexer::LexerInput( char* buf, int max_size )
#endif
	{
	if ( yyin->eof() || yyin->fail() )
		return 0;

#ifdef YY_INTERACTIVE
	yyin->get( buf[0] );

	if ( yyin->eof() )
		return 0;

	if ( yyin->bad() )
		return -1;

	return 1;

#else
	(void) yyin->read( buf, max_size );

	if ( yyin->bad() )
		return -1;
	else
		return yyin->gcount();
#endif
	}

void yyFlexLexer::LexerOutput( const char* buf, int size )
	{
	(void) yyout->write( buf, size );
	}

/* yy_get_next_buffer - try to read in a new buffer
 *
 * Returns a code representing an action:
 *	EOB_ACT_LAST_MATCH -
 *	EOB_ACT_CONTINUE_SCAN - continue scanning from current position
 *	EOB_ACT_END_OF_FILE - end of file
 */

int yyFlexLexer::yy_get_next_buffer()
	{
	register char *dest = yy_current_buffer->yy_ch_buf;
	register char *source = yytext_ptr;
	register int number_to_move, i;
	int ret_val;

	if ( yy_c_buf_p > &yy_current_buffer->yy_ch_buf[yy_n_chars + 1] )
		YY_FATAL_ERROR(
		"fatal flex scanner internal error--end of buffer missed" );

	if ( yy_current_buffer->yy_fill_buffer == 0 )
		{ /* Don't try to fill the buffer, so this is an EOF. */
		if ( yy_c_buf_p - yytext_ptr - YY_MORE_ADJ == 1 )
			{
			/* We matched a single character, the EOB, so
			 * treat this as a final EOF.
			 */
			return EOB_ACT_END_OF_FILE;
			}

		else
			{
			/* We matched some text prior to the EOB, first
			 * process it.
			 */
			return EOB_ACT_LAST_MATCH;
			}
		}

	/* Try to read more data. */

	/* First move last chars to start of buffer. */
	number_to_move = (int) (yy_c_buf_p - yytext_ptr) - 1;

	for ( i = 0; i < number_to_move; ++i )
		*(dest++) = *(source++);

	if ( yy_current_buffer->yy_buffer_status == YY_BUFFER_EOF_PENDING )
		/* don't do the read, it's not guaranteed to return an EOF,
		 * just force an EOF
		 */
		yy_current_buffer->yy_n_chars = yy_n_chars = 0;

	else
		{
		int num_to_read =
			yy_current_buffer->yy_buf_size - number_to_move - 1;

		while ( num_to_read <= 0 )
			{ /* Not enough room in the buffer - grow it. */
#ifdef YY_USES_REJECT
			YY_FATAL_ERROR(
"input buffer overflow, can't enlarge buffer because scanner uses REJECT" );
#else

			/* just a shorter name for the current buffer */
			YY_BUFFER_STATE b = yy_current_buffer;