/* A lexical scanner generated by flex */ /* scanner skeleton version: * $Header: /usr/fsys/odin/a/vern/flex/RCS/flex.skel,v 2.10 90/03/27 12:03:55 vern Exp $ */ #define FLEX_SCANNER //CC #include #include extern istream * yyin; extern ostream * yyout; //CC #ifdef __cplusplus #include #include /* use prototypes in function declarations */ #define YY_USE_PROTOS /* the "const" storage-class-modifier is valid */ #define YY_USE_CONST //CC #endif //CC #ifdef __STDC__ //CC #define YY_USE_PROTOS //CC #define YY_USE_CONST //CC #endif //CC #ifdef __TURBOC__ //CC #define YY_USE_CONST //CC #endif //CC #ifndef YY_USE_CONST //CC #define const //CC #endif //CC #ifdef YY_USE_PROTOS //CC #define YY_PROTO(proto) proto //CC char *malloc( unsigned size ); //CC int free( char * ); //CC #else //CC #define YY_PROTO(proto) () //CC /* there's no standard place to get these definitions */ //CC char *malloc(); //CC int free(); //CC int read(); //CC #endif /* amount of stuff to slurp up with each read */ #ifndef YY_READ_BUF_SIZE #define YY_READ_BUF_SIZE 8192 #endif /* returned upon end-of-file */ #define YY_END_TOK 0 /* 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() */ //CC #define ECHO (void) fwrite( (char *) yytext, yyleng, 1, yyout ) #define ECHO (yyout->write(yytext, yyleng)) /* report a fatal error */ inline void YY_FATAL_ERROR(char * msg) { cerr << msg << "\n"; exit(1); } /* gets input and stuffs it into "buf". number of characters read, or YY_NULL, * is returned in "result". */ //CC #define YY_INPUT(buf,result,max_size) \ //CC if ( (result = read( fileno(yyin), (char *) buf, max_size )) < 0 ) \ //CC YY_FATAL_ERROR( "read() in flex scanner failed" ); #define YY_NULL 0 inline void YY_INPUT(char * buf, int& result, int max_size) { if( yyin->eof() || yyin->fail() ) { result = YY_NULL; } else { yyin->read(buf, max_size); result = yyin->gcount(); if( yyin->bad() ) { YY_FATAL_ERROR( "read() in flex scanner failed" ); } } } /* 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 ) //CC /* report a fatal error */ //CC #define YY_FATAL_ERROR(msg) \ //CC { \ //CC (void) fputs( msg, stderr ); \ //CC (void) putc( '\n', stderr ); \ //CC exit( 1 ); \ //CC } /* default yywrap function - always treat EOF as an EOF */ #define yywrap() 1 /* 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) /* special action meaning "start processing a new file" */ #define YY_NEW_FILE { \ yy_init_buffer( yy_current_buffer, yyin ); \ yy_load_buffer_state(); \ } /* default declaration of generated scanner - a define so the user can * easily add parameters */ //CC #define YY_DECL int yylex YY_PROTO(( void )) #define YY_DECL int yylex ( void ) /* code executed at the end of each rule */ #define YY_BREAK break; #define YY_END_OF_BUFFER_CHAR 0 #ifndef YY_BUF_SIZE #define YY_BUF_SIZE (YY_READ_BUF_SIZE * 2) /* size of default input buffer */ #endif typedef struct yy_buffer_state *YY_BUFFER_STATE; %% section 1 definitions go here /* done after the current pattern has been matched and before the * corresponding action - sets up yytext */ #define YY_DO_BEFORE_ACTION \ yytext = yy_bp; \ %% code to fiddle yytext and yyleng for yymore() goes here yy_hold_char = *yy_cp; \ *yy_cp = '\0'; \ yy_c_buf_p = yy_cp; #define EOB_ACT_CONTINUE_SCAN 0 #define EOB_ACT_END_OF_FILE 1 #define EOB_ACT_LAST_MATCH 2 /* return all but the first 'n' matched characters back to the input stream */ #define yyless(n) \ { \ /* undo effects of setting up yytext */ \ *yy_cp = yy_hold_char; \ yy_c_buf_p = yy_cp = yy_bp + n; \ YY_DO_BEFORE_ACTION; /* set up yytext again */ \ } #define unput(c) yyunput( c, yytext ) struct yy_buffer_state { istream * yy_input_file; YY_CHAR *yy_ch_buf; /* input buffer */ YY_CHAR *yy_buf_pos; /* current position in input buffer */ /* size of input buffer in bytes, not including room for EOB characters*/ int yy_buf_size; /* number of characters read into yy_ch_buf, not including EOB characters */ int yy_n_chars; int yy_eof_status; /* whether we've seen an EOF on this buffer */ #define EOF_NOT_SEEN 0 /* "pending" happens when the EOF has been seen but there's still * some text process */ #define EOF_PENDING 1 #define EOF_DONE 2 }; static YY_BUFFER_STATE yy_current_buffer; /* we provide macros for accessing buffer states in case in the * future we want to put the buffer states in a more general * "scanner state" */ #define YY_CURRENT_BUFFER yy_current_buffer /* yy_hold_char holds the character lost when yytext is formed */ static YY_CHAR yy_hold_char; static int yy_n_chars; /* number of characters read into yy_ch_buf */ #ifndef YY_USER_ACTION #define YY_USER_ACTION #endif extern YY_CHAR *yytext; extern int yyleng; extern istream * yyin; extern ostream * yyout; YY_CHAR *yytext; int yyleng; istream * yyin = 0; ostream * yyout = 0; %% data tables for the DFA go here /* these variables are all declared out here so that section 3 code can * manipulate them */ /* points to current character in buffer */ static YY_CHAR *yy_c_buf_p = (YY_CHAR *) 0; static int yy_init = 1; /* whether we need to initialize */ static int yy_start = 0; /* start state number */ //CC static yy_state_type yy_last_accepting_state; //CC static YY_CHAR *yy_last_accepting_cpos; static yy_state_type yy_get_previous_state ( void ); static yy_state_type yy_try_NUL_trans ( yy_state_type current_state ); static int yy_get_next_buffer ( void ); static void yyunput ( YY_CHAR c, YY_CHAR *buf_ptr ); void yyrestart ( istream * input_file ); void yy_switch_to_buffer ( YY_BUFFER_STATE new_buffer ); void yy_load_buffer_state ( void ); YY_BUFFER_STATE yy_create_buffer ( istream * file, int size ); void yy_delete_buffer ( YY_BUFFER_STATE b ); void yy_init_buffer ( YY_BUFFER_STATE b, istream * file ); #ifdef __cplusplus static int yyinput ( void ); #else static int input ( void ); #endif YY_DECL { register yy_state_type yy_current_state; register YY_CHAR *yy_cp, *yy_bp; register int yy_act; %% user's declarations go here if ( yy_init ) { if ( ! yy_start ) yy_start = 1; /* first start state */ if ( ! yyin ) yyin = &cin; if ( ! yyout ) yyout = &cout; if ( yy_current_buffer ) yy_init_buffer( yy_current_buffer, yyin ); else yy_current_buffer = yy_create_buffer( yyin, YY_BUF_SIZE ); yy_load_buffer_state(); yy_init = 0; } while ( 1 ) /* loops until end-of-file is reached */ { %% yymore()-related code goes here 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; %% code to set up and find next match goes here yy_find_action: %% code to find the action number goes here YY_DO_BEFORE_ACTION; YY_USER_ACTION; do_action: /* this label is used only to access EOF actions */ %% debug code goes here switch ( yy_act ) { %% actions go here case YY_END_OF_BUFFER: { /* amount of text matched not including the EOB char */ int yy_amount_of_matched_text = yy_cp - yytext - 1; /* undo the effects of YY_DO_BEFORE_ACTION */ *yy_cp = yy_hold_char; /* 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 yyinput(). */ 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 + 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 + 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 { %% code to do backtracking for compressed tables and set up yy_cp goes here goto yy_find_action; } } else switch ( yy_get_next_buffer() ) { case EOB_ACT_END_OF_FILE: { 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 + YY_MORE_ADJ; yy_act = YY_STATE_EOF((yy_start - 1) / 2); goto do_action; } else YY_NEW_FILE; } break; case EOB_ACT_CONTINUE_SCAN: yy_c_buf_p = yytext + yy_amount_of_matched_text; yy_current_state = yy_get_previous_state(); yy_cp = yy_c_buf_p; yy_bp = yytext + 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 + YY_MORE_ADJ; goto yy_find_action; } break; } default: #ifdef FLEX_DEBUG printf( "action # %d\n", yy_act ); #endif YY_FATAL_ERROR( "fatal flex scanner internal error--no action found" ); } } } /* yy_get_next_buffer - try to read in a new buffer * * synopsis * int yy_get_next_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 */ static int yy_get_next_buffer() { register YY_CHAR *dest = yy_current_buffer->yy_ch_buf; register YY_CHAR *source = yytext - 1; /* copy prev. char, too */ 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" ); /* try to read more data */ /* first move last chars to start of buffer */ number_to_move = yy_c_buf_p - yytext; for ( i = 0; i < number_to_move; ++i ) *(dest++) = *(source++); if ( yy_current_buffer->yy_eof_status != EOF_NOT_SEEN ) /* don't do the read, it's not guaranteed to return an EOF, * just force an EOF */ yy_n_chars = 0; else { int num_to_read = yy_current_buffer->yy_buf_size - number_to_move - 1; if ( num_to_read > YY_READ_BUF_SIZE ) num_to_read = YY_READ_BUF_SIZE; else if ( num_to_read <= 0 ) YY_FATAL_ERROR( "fatal error - scanner input buffer overflow" ); /* read in more data */ YY_INPUT( (&yy_current_buffer->yy_ch_buf[number_to_move]), yy_n_chars, num_to_read ); } if ( yy_n_chars == 0 ) { if ( number_to_move == 1 ) { ret_val = EOB_ACT_END_OF_FILE; yy_current_buffer->yy_eof_status = EOF_DONE; } else { ret_val = EOB_ACT_LAST_MATCH; yy_current_buffer->yy_eof_status = EOF_PENDING; } } else ret_val = EOB_ACT_CONTINUE_SCAN; yy_n_chars += number_to_move; yy_current_buffer->yy_ch_buf[yy_n_chars] = YY_END_OF_BUFFER_CHAR; yy_current_buffer->yy_ch_buf[yy_n_chars + 1] = YY_END_OF_BUFFER_CHAR; /* yytext begins at the second character in yy_ch_buf; the first * character is the one which preceded it before reading in the latest * buffer; it needs to be kept around in case it's a newline, so * yy_get_previous_state() will have with '^' rules active */ yytext = &yy_current_buffer->yy_ch_buf[1]; return ( ret_val ); } /* yy_get_previous_state - get the state just before the EOB char was reached * * synopsis * yy_state_type yy_get_previous_state(); */ static yy_state_type yy_get_previous_state() { register yy_state_type yy_current_state; register YY_CHAR *yy_cp; %% code to get the start state into yy_current_state goes here for ( yy_cp = yytext + YY_MORE_ADJ; yy_cp < yy_c_buf_p; ++yy_cp ) { %% code to find the next state goes here } return ( yy_current_state ); } /* yy_try_NUL_trans - try to make a transition on the NUL character * * synopsis * next_state = yy_try_NUL_trans( current_state ); */ //CC #ifdef YY_USE_PROTOS static yy_state_type yy_try_NUL_trans( register yy_state_type yy_current_state ) //CC #else //CC static yy_state_type yy_try_NUL_trans( yy_current_state ) //CC register yy_state_type yy_current_state; //CC #endif { register int yy_is_jam; %% code to find the next state, and perhaps do backtracking, goes here return ( yy_is_jam ? 0 : yy_current_state ); } //CC #ifdef YY_USE_PROTOS static void yyunput( YY_CHAR c, register YY_CHAR *yy_bp ) //CC #else //CC static void yyunput( c, yy_bp ) //CC YY_CHAR c; //CC register YY_CHAR *yy_bp; //CC #endif { register YY_CHAR *yy_cp = yy_c_buf_p; /* undo effects of setting up yytext */ *yy_cp = yy_hold_char; if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 ) { /* need to shift things up to make room */ register int number_to_move = yy_n_chars + 2; /* +2 for EOB chars */ register YY_CHAR *dest = &yy_current_buffer->yy_ch_buf[yy_current_buffer->yy_buf_size + 2]; register YY_CHAR *source = &yy_current_buffer->yy_ch_buf[number_to_move]; while ( source > yy_current_buffer->yy_ch_buf ) *--dest = *--source; yy_cp += dest - source; yy_bp += dest - source; yy_n_chars = yy_current_buffer->yy_buf_size; if ( yy_cp < yy_current_buffer->yy_ch_buf + 2 ) YY_FATAL_ERROR( "flex scanner push-back overflow" ); } if ( yy_cp > yy_bp && yy_cp[-1] == '\n' ) yy_cp[-2] = '\n'; *--yy_cp = c; /* note: the formal parameter *must* be called "yy_bp" for this * macro to now work correctly */ YY_DO_BEFORE_ACTION; /* set up yytext again */ } #ifdef __cplusplus static int yyinput() #else static int input() #endif { int c; YY_CHAR *yy_cp = yy_c_buf_p; *yy_cp = yy_hold_char; if ( *yy_c_buf_p == YY_END_OF_BUFFER_CHAR ) { /* yy_c_buf_p now points to the character we want to return. * If this occurs *before* the EOB characters, then it's a * valid NUL; if not, then we've hit the end of the buffer. */ if ( yy_c_buf_p < &yy_current_buffer->yy_ch_buf[yy_n_chars] ) /* this was really a NUL */ *yy_c_buf_p = '\0'; else { /* need more input */ yytext = yy_c_buf_p; ++yy_c_buf_p; switch ( yy_get_next_buffer() ) { case EOB_ACT_END_OF_FILE: { if ( yywrap() ) { yy_c_buf_p = yytext + YY_MORE_ADJ; return ( EOF ); } YY_NEW_FILE; #ifdef __cplusplus return ( yyinput() ); #else return ( input() ); #endif } break; case EOB_ACT_CONTINUE_SCAN: yy_c_buf_p = yytext + YY_MORE_ADJ; break; case EOB_ACT_LAST_MATCH: #ifdef __cplusplus YY_FATAL_ERROR( "unexpected last match in yyinput()" ); #else YY_FATAL_ERROR( "unexpected last match in input()" ); #endif } } } c = *yy_c_buf_p; yy_hold_char = *++yy_c_buf_p; return ( c ); } //CC #ifdef YY_USE_PROTOS void yyrestart( istream * input_file ) //CC #else //CC void yyrestart( input_file ) //CC FILE * input_file; //CC #endif { yy_init_buffer( yy_current_buffer, input_file ); yy_load_buffer_state(); } //CC #ifdef YY_USE_PROTOS void yy_switch_to_buffer( YY_BUFFER_STATE new_buffer ) //CC #else //CC void yy_switch_to_buffer( new_buffer ) //CC YY_BUFFER_STATE new_buffer; //CC #endif { if ( yy_current_buffer == new_buffer ) return; if ( yy_current_buffer ) { /* flush out information for old buffer */ *yy_c_buf_p = yy_hold_char; yy_current_buffer->yy_buf_pos = yy_c_buf_p; yy_current_buffer->yy_n_chars = yy_n_chars; } yy_current_buffer = new_buffer; yy_load_buffer_state(); } //CC #ifdef YY_USE_PROTOS void yy_load_buffer_state( void ) //CC #else //CC void yy_load_buffer_state() //CC #endif { yy_n_chars = yy_current_buffer->yy_n_chars; yytext = yy_c_buf_p = yy_current_buffer->yy_buf_pos; yyin = yy_current_buffer->yy_input_file; yy_hold_char = *yy_c_buf_p; } //CC #ifdef YY_USE_PROTOS YY_BUFFER_STATE yy_create_buffer( istream * file, int size ) //CC #else //CC YY_BUFFER_STATE yy_create_buffer( file, size ) //CC FILE *file; //CC int size; //CC #endif { YY_BUFFER_STATE b; b = (YY_BUFFER_STATE) malloc( sizeof( struct yy_buffer_state ) ); if ( ! b ) YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); b->yy_buf_size = size; /* yy_ch_buf has to be 2 characters longer than the size given because * we need to put in 2 end-of-buffer characters. */ b->yy_ch_buf = (YY_CHAR *) malloc( (unsigned) (b->yy_buf_size + 2) ); if ( ! b->yy_ch_buf ) YY_FATAL_ERROR( "out of dynamic memory in yy_create_buffer()" ); yy_init_buffer( b, file ); return ( b ); } //CC #ifdef YY_USE_PROTOS void yy_delete_buffer( YY_BUFFER_STATE b ) //CC #else //CC void yy_delete_buffer( b ) //CC YY_BUFFER_STATE b; //CC #endif { if ( b == yy_current_buffer ) yy_current_buffer = (YY_BUFFER_STATE) 0; free( (char *) b->yy_ch_buf ); free( (char *) b ); } //CC #ifdef YY_USE_PROTOS void yy_init_buffer( YY_BUFFER_STATE b, istream *file ) //CC #else //CC void yy_init_buffer( b, file ) //CC YY_BUFFER_STATE b; //CC FILE *file; //CC #endif { b->yy_input_file = file; /* we put in the '\n' and start reading from [1] so that an * initial match-at-newline will be true. */ b->yy_ch_buf[0] = '\n'; b->yy_n_chars = 1; /* we always need two end-of-buffer characters. The first causes * a transition to the end-of-buffer state. The second causes * a jam in that state. */ b->yy_ch_buf[1] = YY_END_OF_BUFFER_CHAR; b->yy_ch_buf[2] = YY_END_OF_BUFFER_CHAR; b->yy_buf_pos = &b->yy_ch_buf[1]; b->yy_eof_status = EOF_NOT_SEEN; }