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- /* flex - tool to generate fast lexical analyzers */
-
- /*-
- * 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
- char copyright[] =
- "@(#) Copyright (c) 1990 The Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- /* $Header: main.c,v 1.2 94/01/04 14:33:11 vern Exp $ */
-
-
- #include "flexdef.h"
- #include "version.h"
-
- static char flex_version[] = FLEX_VERSION;
-
-
- /* declare functions that have forward references */
-
- void flexinit PROTO((int, char**));
- void readin PROTO((void));
- void set_up_initial_allocations PROTO((void));
-
-
- /* these globals are all defined and commented in flexdef.h */
- int printstats, syntaxerror, eofseen, ddebug, trace, nowarn, spprdflt;
- int interactive, caseins, lex_compat, useecs, fulltbl, usemecs;
- int fullspd, gen_line_dirs, performance_report, backing_up_report;
- int C_plus_plus, long_align, use_read, yytext_is_array, csize;
- int yymore_used, reject, real_reject, continued_action;
- int yymore_really_used, reject_really_used;
- int datapos, dataline, linenum;
- FILE *skelfile = NULL;
- int skel_ind = 0;
- char *action_array;
- int action_size, defs1_offset, prolog_offset, action_offset, action_index;
- char *infilename = NULL;
- int onestate[ONE_STACK_SIZE], onesym[ONE_STACK_SIZE];
- int onenext[ONE_STACK_SIZE], onedef[ONE_STACK_SIZE], onesp;
- int current_mns, num_rules, num_eof_rules, default_rule;
- int current_max_rules, lastnfa;
- int *firstst, *lastst, *finalst, *transchar, *trans1, *trans2;
- int *accptnum, *assoc_rule, *state_type;
- int *rule_type, *rule_linenum, *rule_useful;
- int current_state_type;
- int variable_trailing_context_rules;
- int numtemps, numprots, protprev[MSP], protnext[MSP], prottbl[MSP];
- int protcomst[MSP], firstprot, lastprot, protsave[PROT_SAVE_SIZE];
- int numecs, nextecm[CSIZE + 1], ecgroup[CSIZE + 1], nummecs, tecfwd[CSIZE + 1];
- int tecbck[CSIZE + 1];
- int lastsc, current_max_scs, *scset, *scbol, *scxclu, *sceof, *actvsc;
- char **scname;
- int current_max_dfa_size, current_max_xpairs;
- int current_max_template_xpairs, current_max_dfas;
- int lastdfa, *nxt, *chk, *tnxt;
- int *base, *def, *nultrans, NUL_ec, tblend, firstfree, **dss, *dfasiz;
- union dfaacc_union *dfaacc;
- int *accsiz, *dhash, numas;
- int numsnpairs, jambase, jamstate;
- int lastccl, current_maxccls, *cclmap, *ccllen, *cclng, cclreuse;
- int current_max_ccl_tbl_size;
- Char *ccltbl;
- char nmstr[MAXLINE];
- int sectnum, nummt, hshcol, dfaeql, numeps, eps2, num_reallocs;
- int tmpuses, totnst, peakpairs, numuniq, numdup, hshsave;
- int num_backing_up, bol_needed;
- FILE *backing_up_file;
- int end_of_buffer_state;
- char **input_files;
- int num_input_files;
- char *program_name;
-
- #ifndef SHORT_FILE_NAMES
- static char *outfile_template = "lex.%s.%s";
- #else
- static char *outfile_template = "lex%s.%s";
- #endif
- static char outfile_path[64];
-
- static int outfile_created = 0;
- static int use_stdout;
- static char *skelname = NULL;
- static char *prefix = "yy";
-
-
- int main( argc, argv )
- int argc;
- char **argv;
- {
- int i;
-
- flexinit( argc, argv );
-
- readin();
-
- ntod();
-
- for ( i = 1; i <= num_rules; ++i )
- if ( ! rule_useful[i] && i != default_rule )
- line_warning( "rule cannot be matched",
- rule_linenum[i] );
-
- if ( spprdflt && ! reject && rule_useful[default_rule] )
- line_warning( "-s option given but default rule can be matched",
- rule_linenum[default_rule] );
-
- /* Generate the C state transition tables from the DFA. */
- make_tables();
-
- /* Note, flexend does not return. It exits with its argument
- * as status.
- */
- flexend( 0 );
-
- return 0; /* keep compilers/lint happy */
- }
-
-
- /* flexend - terminate flex
- *
- * note
- * This routine does not return.
- */
-
- void flexend( exit_status )
- int exit_status;
-
- {
- int tblsiz;
- int unlink();
-
- if ( skelfile != NULL )
- {
- if ( ferror( skelfile ) )
- flexfatal(
- "error occurred when reading skeleton file" );
-
- else if ( fclose( skelfile ) )
- flexfatal(
- "error occurred when closing skeleton file" );
- }
-
- if ( exit_status != 0 && outfile_created )
- {
- if ( ferror( stdout ) )
- flexfatal( "error occurred when writing output file" );
-
- else if ( fclose( stdout ) )
- flexfatal( "error occurred when closing output file" );
-
- else if ( unlink( outfile_path ) )
- flexfatal( "error occurred when deleting output file" );
- }
-
- if ( backing_up_report && backing_up_file )
- {
- if ( num_backing_up == 0 )
- fprintf( backing_up_file, "No backing up.\n" );
- else if ( fullspd || fulltbl )
- fprintf( backing_up_file,
- "%d backing up (non-accepting) states.\n",
- num_backing_up );
- else
- fprintf( backing_up_file,
- "Compressed tables always back up.\n" );
-
- if ( ferror( backing_up_file ) )
- flexfatal( "error occurred when writing backup file" );
-
- else if ( fclose( backing_up_file ) )
- flexfatal( "error occurred when closing backup file" );
- }
-
- if ( printstats )
- {
- fprintf( stderr, "%s version %s usage statistics:\n",
- program_name, flex_version );
-
- fprintf( stderr, " scanner options: -" );
-
- if ( C_plus_plus )
- putc( '+', stderr );
- if ( backing_up_report )
- putc( 'b', stderr );
- if ( ddebug )
- putc( 'd', stderr );
- if ( caseins )
- putc( 'i', stderr );
- if ( lex_compat )
- putc( 'l', stderr );
- if ( performance_report > 0 )
- putc( 'p', stderr );
- if ( performance_report > 1 )
- putc( 'p', stderr );
- if ( spprdflt )
- putc( 's', stderr );
- if ( use_stdout )
- putc( 't', stderr );
- if ( printstats )
- putc( 'v', stderr ); /* always true! */
- if ( nowarn )
- putc( 'w', stderr );
- if ( ! interactive )
- putc( 'B', stderr );
- if ( interactive )
- putc( 'I', stderr );
- if ( ! gen_line_dirs )
- putc( 'L', stderr );
- if ( trace )
- putc( 'T', stderr );
- if ( csize == 128 )
- putc( '7', stderr );
- else
- putc( '8', stderr );
-
- fprintf( stderr, " -C" );
-
- if ( long_align )
- putc( 'a', stderr );
- if ( fulltbl )
- putc( 'f', stderr );
- if ( fullspd )
- putc( 'F', stderr );
- if ( useecs )
- putc( 'e', stderr );
- if ( usemecs )
- putc( 'm', stderr );
- if ( use_read )
- putc( 'r', stderr );
-
- if ( skelname )
- fprintf( stderr, " -S%s", skelname );
-
- if ( strcmp( prefix, "yy" ) )
- fprintf( stderr, " -P%s", prefix );
-
- putc( '\n', stderr );
-
- fprintf( stderr, " %d/%d NFA states\n", lastnfa, current_mns );
- fprintf( stderr, " %d/%d DFA states (%d words)\n", lastdfa,
- current_max_dfas, totnst );
- fprintf( stderr, " %d rules\n",
- num_rules + num_eof_rules - 1 /* - 1 for def. rule */ );
-
- if ( num_backing_up == 0 )
- fprintf( stderr, " No backing up\n" );
- else if ( fullspd || fulltbl )
- fprintf( stderr,
- " %d backing-up (non-accepting) states\n",
- num_backing_up );
- else
- fprintf( stderr,
- " Compressed tables always back-up\n" );
-
- if ( bol_needed )
- fprintf( stderr,
- " Beginning-of-line patterns used\n" );
-
- fprintf( stderr, " %d/%d start conditions\n", lastsc,
- current_max_scs );
- fprintf( stderr,
- " %d epsilon states, %d double epsilon states\n",
- numeps, eps2 );
-
- if ( lastccl == 0 )
- fprintf( stderr, " no character classes\n" );
- else
- fprintf( stderr,
- " %d/%d character classes needed %d/%d words of storage, %d reused\n",
- lastccl, current_maxccls,
- cclmap[lastccl] + ccllen[lastccl],
- current_max_ccl_tbl_size, cclreuse );
-
- fprintf( stderr, " %d state/nextstate pairs created\n",
- numsnpairs );
- fprintf( stderr, " %d/%d unique/duplicate transitions\n",
- numuniq, numdup );
-
- if ( fulltbl )
- {
- tblsiz = lastdfa * numecs;
- fprintf( stderr, " %d table entries\n", tblsiz );
- }
-
- else
- {
- tblsiz = 2 * (lastdfa + numtemps) + 2 * tblend;
-
- fprintf( stderr, " %d/%d base-def entries created\n",
- lastdfa + numtemps, current_max_dfas );
- fprintf( stderr,
- " %d/%d (peak %d) nxt-chk entries created\n",
- tblend, current_max_xpairs, peakpairs );
- fprintf( stderr,
- " %d/%d (peak %d) template nxt-chk entries created\n",
- numtemps * nummecs, current_max_template_xpairs,
- numtemps * numecs );
- fprintf( stderr, " %d empty table entries\n", nummt );
- fprintf( stderr, " %d protos created\n", numprots );
- fprintf( stderr, " %d templates created, %d uses\n",
- numtemps, tmpuses );
- }
-
- if ( useecs )
- {
- tblsiz = tblsiz + csize;
- fprintf( stderr,
- " %d/%d equivalence classes created\n",
- numecs, csize );
- }
-
- if ( usemecs )
- {
- tblsiz = tblsiz + numecs;
- fprintf( stderr,
- " %d/%d meta-equivalence classes created\n",
- nummecs, csize );
- }
-
- fprintf( stderr,
- " %d (%d saved) hash collisions, %d DFAs equal\n",
- hshcol, hshsave, dfaeql );
- fprintf( stderr, " %d sets of reallocations needed\n",
- num_reallocs );
- fprintf( stderr, " %d total table entries needed\n", tblsiz );
- }
-
- #ifndef VMS
- exit( exit_status );
- #else
- exit( exit_status + 1 );
- #endif
- }
-
-
- /* flexinit - initialize flex */
-
- void flexinit( argc, argv )
- int argc;
- char **argv;
- {
- int i, sawcmpflag;
- int csize_given, interactive_given;
- char *arg, *mktemp();
-
- printstats = syntaxerror = trace = spprdflt = caseins = false;
- lex_compat = false;
- C_plus_plus = backing_up_report = ddebug = fulltbl = fullspd = false;
- long_align = nowarn = yymore_used = continued_action = reject = false;
- yytext_is_array = yymore_really_used = reject_really_used = false;
- gen_line_dirs = usemecs = useecs = true;
- performance_report = 0;
-
- sawcmpflag = false;
- use_read = use_stdout = false;
- csize_given = false;
- interactive_given = false;
-
- /* Initialize dynamic array for holding the rule actions. */
- action_size = 2048; /* default size of action array in bytes */
- action_array = allocate_character_array( action_size );
- defs1_offset = prolog_offset = action_offset = action_index = 0;
- action_array[0] = '\0';
-
- program_name = argv[0];
-
- if ( program_name[0] != '\0' &&
- program_name[strlen( program_name ) - 1] == '+' )
- C_plus_plus = true;
-
- /* read flags */
- for ( --argc, ++argv; argc ; --argc, ++argv )
- {
- if ( argv[0][0] != '-' || argv[0][1] == '\0' )
- break;
-
- arg = argv[0];
-
- for ( i = 1; arg[i] != '\0'; ++i )
- switch ( arg[i] )
- {
- case '+':
- C_plus_plus = true;
- break;
-
- case 'B':
- interactive = false;
- interactive_given = true;
- break;
-
- case 'b':
- backing_up_report = true;
- break;
-
- case 'c':
- fprintf( stderr,
- "%s: Assuming use of deprecated -c flag is really intended to be -C\n",
- program_name );
-
- /* fall through */
-
- case 'C':
- if ( i != 1 )
- flexerror(
- "-C flag must be given separately" );
-
- if ( ! sawcmpflag )
- {
- useecs = false;
- usemecs = false;
- fulltbl = false;
- sawcmpflag = true;
- }
-
- for ( ++i; arg[i] != '\0'; ++i )
- switch ( arg[i] )
- {
- case 'a':
- long_align =
- true;
- break;
-
- case 'e':
- useecs = true;
- break;
-
- case 'F':
- fullspd = true;
- break;
-
- case 'f':
- fulltbl = true;
- break;
-
- case 'm':
- usemecs = true;
- break;
-
- case 'r':
- use_read = true;
- break;
-
- default:
- lerrif(
- "unknown -C option '%c'",
- (int) arg[i] );
- break;
- }
-
- goto get_next_arg;
-
- case 'd':
- ddebug = true;
- break;
-
- case 'f':
- useecs = usemecs = false;
- use_read = fulltbl = true;
- break;
-
- case 'F':
- useecs = usemecs = false;
- use_read = fullspd = true;
- break;
-
- case 'h':
- usage();
- exit( 0 );
-
- case 'I':
- interactive = true;
- interactive_given = true;
- break;
-
- case 'i':
- caseins = true;
- break;
-
- case 'l':
- lex_compat = true;
- break;
-
- case 'L':
- gen_line_dirs = false;
- break;
-
- case 'n':
- /* Stupid do-nothing deprecated
- * option.
- */
- break;
-
- case 'P':
- if ( i != 1 )
- flexerror(
- "-P flag must be given separately" );
-
- prefix = arg + i + 1;
- goto get_next_arg;
-
- case 'p':
- ++performance_report;
- break;
-
- case 'S':
- if ( i != 1 )
- flexerror(
- "-S flag must be given separately" );
-
- skelname = arg + i + 1;
- goto get_next_arg;
-
- case 's':
- spprdflt = true;
- break;
-
- case 't':
- use_stdout = true;
- break;
-
- case 'T':
- trace = true;
- break;
-
- case 'v':
- printstats = true;
- break;
-
- case 'V':
- fprintf( stderr, "%s version %s\n",
- program_name, flex_version );
- exit( 0 );
-
- case 'w':
- nowarn = true;
- break;
-
- case '7':
- csize = 128;
- csize_given = true;
- break;
-
- case '8':
- csize = CSIZE;
- csize_given = true;
- break;
-
- default:
- fprintf( stderr,
- "%s: unknown flag '%c'\n",
- program_name, (int) arg[i] );
- usage();
- exit( 1 );
- }
-
- /* Used by -C, -S and -P flags in lieu of a "continue 2"
- * control.
- */
- get_next_arg: ;
- }
-
- if ( ! csize_given )
- {
- if ( (fulltbl || fullspd) && ! useecs )
- csize = DEFAULT_CSIZE;
- else
- csize = CSIZE;
- }
-
- if ( ! interactive_given )
- {
- if ( fulltbl || fullspd )
- interactive = false;
- else
- interactive = true;
- }
-
- if ( lex_compat )
- {
- if ( C_plus_plus )
- flexerror( "Can't use -+ with -l option" );
-
- if ( fulltbl || fullspd )
- flexerror( "Can't use -f or -F with -l option" );
-
- /* Don't rely on detecting use of yymore() and REJECT,
- * just assume they'll be used.
- */
- yymore_really_used = reject_really_used = true;
-
- yytext_is_array = true;
- use_read = false;
- }
-
- if ( (fulltbl || fullspd) && usemecs )
- flexerror( "-Cf/-CF and -Cm don't make sense together" );
-
- if ( (fulltbl || fullspd) && interactive )
- flexerror( "-Cf/-CF and -I are incompatible" );
-
- if ( fulltbl && fullspd )
- flexerror( "-Cf and -CF are mutually exclusive" );
-
- if ( C_plus_plus && fullspd )
- flexerror( "Can't use -+ with -CF option" );
-
- if ( ! use_stdout )
- {
- FILE *prev_stdout;
- char *suffix;
-
- if ( C_plus_plus )
- suffix = "cc";
- else
- suffix = "c";
-
- sprintf( outfile_path, outfile_template, prefix, suffix );
-
- prev_stdout = freopen( outfile_path, "w", stdout );
-
- if ( prev_stdout == NULL )
- lerrsf( "could not create %s", outfile_path );
-
- outfile_created = 1;
- }
-
- num_input_files = argc;
- input_files = argv;
- set_input_file( num_input_files > 0 ? input_files[0] : NULL );
-
- if ( backing_up_report )
- {
- #ifndef SHORT_FILE_NAMES
- backing_up_file = fopen( "lex.backup", "w" );
- #else
- backing_up_file = fopen( "lex.bck", "w" );
- #endif
-
- if ( backing_up_file == NULL )
- flexerror( "could not create lex.backup" );
- }
-
- else
- backing_up_file = NULL;
-
-
- lastccl = 0;
- lastsc = 0;
-
- if ( skelname && (skelfile = fopen( skelname, "r" )) == NULL )
- lerrsf( "can't open skeleton file %s", skelname );
-
- if ( strcmp( prefix, "yy" ) )
- {
- #define GEN_PREFIX(name) printf( "#define yy%s %s%s\n", name, prefix, name );
- GEN_PREFIX( "FlexLexer" );
- GEN_PREFIX( "_create_buffer" );
- GEN_PREFIX( "_delete_buffer" );
- GEN_PREFIX( "_flex_debug" );
- GEN_PREFIX( "_init_buffer" );
- GEN_PREFIX( "_load_buffer_state" );
- GEN_PREFIX( "_switch_to_buffer" );
- GEN_PREFIX( "in" );
- GEN_PREFIX( "leng" );
- GEN_PREFIX( "lex" );
- GEN_PREFIX( "out" );
- GEN_PREFIX( "restart" );
- GEN_PREFIX( "text" );
- GEN_PREFIX( "wrap" );
- printf( "\n" );
- }
-
-
- lastdfa = lastnfa = 0;
- num_rules = num_eof_rules = default_rule = 0;
- numas = numsnpairs = tmpuses = 0;
- numecs = numeps = eps2 = num_reallocs = hshcol = dfaeql = totnst = 0;
- numuniq = numdup = hshsave = eofseen = datapos = dataline = 0;
- num_backing_up = onesp = numprots = 0;
- variable_trailing_context_rules = bol_needed = false;
-
- linenum = sectnum = 1;
- firstprot = NIL;
-
- /* Used in mkprot() so that the first proto goes in slot 1
- * of the proto queue.
- */
- lastprot = 1;
-
- if ( useecs )
- {
- /* Set up doubly-linked equivalence classes. */
-
- /* We loop all the way up to csize, since ecgroup[csize] is
- * the position used for NUL characters.
- */
- ecgroup[1] = NIL;
-
- for ( i = 2; i <= csize; ++i )
- {
- ecgroup[i] = i - 1;
- nextecm[i - 1] = i;
- }
-
- nextecm[csize] = NIL;
- }
-
- else
- {
- /* Put everything in its own equivalence class. */
- for ( i = 1; i <= csize; ++i )
- {
- ecgroup[i] = i;
- nextecm[i] = BAD_SUBSCRIPT; /* to catch errors */
- }
- }
-
- set_up_initial_allocations();
- }
-
-
- /* readin - read in the rules section of the input file(s) */
-
- void readin()
- {
- skelout();
-
- line_directive_out( (FILE *) 0 );
-
- if ( yyparse() )
- {
- pinpoint_message( "fatal parse error" );
- flexend( 1 );
- }
-
- if ( syntaxerror )
- flexend( 1 );
-
- if ( yymore_really_used == REALLY_USED )
- yymore_used = true;
- else if ( yymore_really_used == REALLY_NOT_USED )
- yymore_used = false;
-
- if ( reject_really_used == REALLY_USED )
- reject = true;
- else if ( reject_really_used == REALLY_NOT_USED )
- reject = false;
-
- if ( performance_report > 0 )
- {
- if ( lex_compat )
- {
- fprintf( stderr,
- "-l AT&T lex compatibility option entails a large performance penalty\n" );
- fprintf( stderr,
- " and may be the actual source of other reported performance penalties\n" );
- }
-
- if ( performance_report > 1 )
- {
- if ( interactive )
- fprintf( stderr,
- "-I (interactive) entails a minor performance penalty\n" );
-
- if ( yymore_used )
- fprintf( stderr,
- "yymore() entails a minor performance penalty\n" );
- }
-
- if ( reject )
- fprintf( stderr,
- "REJECT entails a large performance penalty\n" );
-
- if ( variable_trailing_context_rules )
- fprintf( stderr,
- "Variable trailing context rules entail a large performance penalty\n" );
- }
-
- if ( reject )
- real_reject = true;
-
- if ( variable_trailing_context_rules )
- reject = true;
-
- if ( (fulltbl || fullspd) && reject )
- {
- if ( real_reject )
- flexerror( "REJECT cannot be used with -f or -F" );
- else
- flexerror(
- "variable trailing context rules cannot be used with -f or -F" );
- }
-
- if ( csize == 256 )
- puts( "typedef unsigned char YY_CHAR;" );
- else
- puts( "typedef char YY_CHAR;" );
-
- if ( C_plus_plus )
- {
- puts( "#define yytext_ptr yytext" );
-
- if ( interactive )
- puts( "#define YY_INTERACTIVE" );
- }
-
- if ( fullspd )
- printf(
- "typedef const struct yy_trans_info *yy_state_type;\n" );
- else if ( ! C_plus_plus )
- printf( "typedef int yy_state_type;\n" );
-
- if ( reject )
- printf( "\n#define YY_USES_REJECT\n" );
-
- if ( ddebug )
- puts( "\n#define FLEX_DEBUG" );
-
- if ( lex_compat )
- {
- printf( "FILE *yyin = stdin, *yyout = stdout;\n" );
- printf( "extern int yylineno;\n" );
- printf( "int yylineno = 1;\n" );
- }
- else if ( ! C_plus_plus )
- printf( "FILE *yyin = (FILE *) 0, *yyout = (FILE *) 0;\n" );
-
- if ( C_plus_plus )
- printf( "\n#include <FlexLexer.h>\n" );
-
- else
- {
- if ( yytext_is_array )
- puts( "extern char yytext[];\n" );
-
- else
- {
- puts( "extern char *yytext;" );
- puts( "#define yytext_ptr yytext" );
- }
- }
-
- if ( useecs )
- numecs = cre8ecs( nextecm, ecgroup, csize );
- else
- numecs = csize;
-
- /* Now map the equivalence class for NUL to its expected place. */
- ecgroup[0] = ecgroup[csize];
- NUL_ec = ABS( ecgroup[0] );
-
- if ( useecs )
- ccl2ecl();
- }
-
-
- /* set_up_initial_allocations - allocate memory for internal tables */
-
- void set_up_initial_allocations()
- {
- current_mns = INITIAL_MNS;
- firstst = allocate_integer_array( current_mns );
- lastst = allocate_integer_array( current_mns );
- finalst = allocate_integer_array( current_mns );
- transchar = allocate_integer_array( current_mns );
- trans1 = allocate_integer_array( current_mns );
- trans2 = allocate_integer_array( current_mns );
- accptnum = allocate_integer_array( current_mns );
- assoc_rule = allocate_integer_array( current_mns );
- state_type = allocate_integer_array( current_mns );
-
- current_max_rules = INITIAL_MAX_RULES;
- rule_type = allocate_integer_array( current_max_rules );
- rule_linenum = allocate_integer_array( current_max_rules );
- rule_useful = allocate_integer_array( current_max_rules );
-
- current_max_scs = INITIAL_MAX_SCS;
- scset = allocate_integer_array( current_max_scs );
- scbol = allocate_integer_array( current_max_scs );
- scxclu = allocate_integer_array( current_max_scs );
- sceof = allocate_integer_array( current_max_scs );
- scname = allocate_char_ptr_array( current_max_scs );
- actvsc = allocate_integer_array( current_max_scs );
-
- current_maxccls = INITIAL_MAX_CCLS;
- cclmap = allocate_integer_array( current_maxccls );
- ccllen = allocate_integer_array( current_maxccls );
- cclng = allocate_integer_array( current_maxccls );
-
- current_max_ccl_tbl_size = INITIAL_MAX_CCL_TBL_SIZE;
- ccltbl = allocate_Character_array( current_max_ccl_tbl_size );
-
- current_max_dfa_size = INITIAL_MAX_DFA_SIZE;
-
- current_max_xpairs = INITIAL_MAX_XPAIRS;
- nxt = allocate_integer_array( current_max_xpairs );
- chk = allocate_integer_array( current_max_xpairs );
-
- current_max_template_xpairs = INITIAL_MAX_TEMPLATE_XPAIRS;
- tnxt = allocate_integer_array( current_max_template_xpairs );
-
- current_max_dfas = INITIAL_MAX_DFAS;
- base = allocate_integer_array( current_max_dfas );
- def = allocate_integer_array( current_max_dfas );
- dfasiz = allocate_integer_array( current_max_dfas );
- accsiz = allocate_integer_array( current_max_dfas );
- dhash = allocate_integer_array( current_max_dfas );
- dss = allocate_int_ptr_array( current_max_dfas );
- dfaacc = allocate_dfaacc_union( current_max_dfas );
-
- nultrans = (int *) 0;
- }
-
-
- void usage()
- {
- fprintf( stderr,
- "%s [-bcdfhilnpstvwBFILTV78+ -C[aefFmr] -Pprefix -Sskeleton] [file ...]\n",
- program_name );
-
- fprintf( stderr,
- "\t-b generate backing-up information to lex.backup\n" );
- fprintf( stderr, "\t-c do-nothing POSIX option\n" );
- fprintf( stderr, "\t-d turn on debug mode in generated scanner\n" );
- fprintf( stderr, "\t-f generate fast, large scanner\n" );
- fprintf( stderr, "\t-h produce this help message\n" );
- fprintf( stderr, "\t-i generate case-insensitive scanner\n" );
- fprintf( stderr, "\t-l maximal compatibility with original lex\n" );
- fprintf( stderr, "\t-n do-nothing POSIX option\n" );
- fprintf( stderr, "\t-p generate performance report to stderr\n" );
- fprintf( stderr,
- "\t-s suppress default rule to ECHO unmatched text\n" );
- fprintf( stderr,
- "\t-t write generated scanner on stdout instead of lex.yy.c\n" );
- fprintf( stderr,
- "\t-v write summary of scanner statistics to stderr\n" );
- fprintf( stderr, "\t-w do not generate warnings\n" );
- fprintf( stderr, "\t-B generate batch scanner (opposite of -I)\n" );
- fprintf( stderr,
- "\t-F use alternative fast scanner representation\n" );
- fprintf( stderr,
- "\t-I generate interactive scanner (opposite of -B)\n" );
- fprintf( stderr, "\t-L suppress #line directives in scanner\n" );
- fprintf( stderr, "\t-T %s should run in trace mode\n", program_name );
- fprintf( stderr, "\t-V report %s version\n", program_name );
- fprintf( stderr, "\t-7 generate 7-bit scanner\n" );
- fprintf( stderr, "\t-8 generate 8-bit scanner\n" );
- fprintf( stderr, "\t-+ generate C++ scanner class\n" );
- fprintf( stderr,
- "\t-C specify degree of table compression (default is -Cem):\n" );
- fprintf( stderr,
- "\t\t-Ca trade off larger tables for better memory alignment\n" );
- fprintf( stderr, "\t\t-Ce construct equivalence classes\n" );
- fprintf( stderr,
- "\t\t-Cf do not compress scanner tables; use -f representation\n" );
- fprintf( stderr,
- "\t\t-CF do not compress scanner tables; use -F representation\n" );
- fprintf( stderr, "\t\t-Cm construct meta-equivalence classes\n" );
- fprintf( stderr,
- "\t\t-Cr use read() instead of stdio for scanner input\n" );
- fprintf( stderr, "\t-P specify scanner prefix other than \"yy\"\n" );
- fprintf( stderr, "\t-S specify skeleton file\n" );
- }
-