| /* flexdef - definitions file for flex */ |
| |
| /*- |
| * 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 with or without |
| * modification 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. |
| */ |
| |
| /* @(#) $Header: /home/daffy/u0/vern/flex/RCS/flexdef.h,v 2.53 95/04/20 11:17:36 vern Exp $ (LBL) */ |
| |
| #include <stdio.h> |
| #include <ctype.h> |
| |
| #include "config.h" |
| |
| #ifdef __TURBOC__ |
| #define HAVE_STRING_H 1 |
| #define MS_DOS 1 |
| #ifndef __STDC__ |
| #define __STDC__ 1 |
| #endif |
| #pragma warn -pro |
| #pragma warn -rch |
| #pragma warn -use |
| #pragma warn -aus |
| #pragma warn -par |
| #pragma warn -pia |
| #endif |
| |
| #ifdef HAVE_STRING_H |
| #include <string.h> |
| #else |
| #include <strings.h> |
| #endif |
| |
| #ifdef HAVE_SYS_TYPES_H |
| #include <sys/types.h> |
| #endif |
| |
| #ifdef HAVE_MALLOC_H |
| #include <malloc.h> |
| #endif |
| |
| #ifdef STDC_HEADERS |
| #include <stdlib.h> |
| #endif |
| |
| /* As an aid for the internationalization patch to flex, which |
| * is maintained outside this distribution for copyright reasons. |
| */ |
| #define _(String) (String) |
| |
| /* Always be prepared to generate an 8-bit scanner. */ |
| #define CSIZE 256 |
| #define Char unsigned char |
| |
| /* Size of input alphabet - should be size of ASCII set. */ |
| #ifndef DEFAULT_CSIZE |
| #define DEFAULT_CSIZE 128 |
| #endif |
| |
| #ifndef PROTO |
| #if __STDC__ |
| #define PROTO(proto) proto |
| #else |
| #define PROTO(proto) () |
| #endif |
| #endif |
| |
| #ifdef VMS |
| #ifndef __VMS_POSIX |
| #define unlink remove |
| #define SHORT_FILE_NAMES |
| #endif |
| #endif |
| |
| #ifdef MS_DOS |
| #define SHORT_FILE_NAMES |
| #endif |
| |
| |
| /* Maximum line length we'll have to deal with. */ |
| #define MAXLINE 2048 |
| |
| #ifndef MIN |
| #define MIN(x,y) ((x) < (y) ? (x) : (y)) |
| #endif |
| #ifndef MAX |
| #define MAX(x,y) ((x) > (y) ? (x) : (y)) |
| #endif |
| #ifndef ABS |
| #define ABS(x) ((x) < 0 ? -(x) : (x)) |
| #endif |
| |
| |
| /* ANSI C does not guarantee that isascii() is defined */ |
| #ifndef isascii |
| #define isascii(c) ((c) <= 0177) |
| #endif |
| |
| |
| #define true 1 |
| #define false 0 |
| #define unspecified -1 |
| |
| |
| /* Special chk[] values marking the slots taking by end-of-buffer and action |
| * numbers. |
| */ |
| #define EOB_POSITION -1 |
| #define ACTION_POSITION -2 |
| |
| /* Number of data items per line for -f output. */ |
| #define NUMDATAITEMS 10 |
| |
| /* Number of lines of data in -f output before inserting a blank line for |
| * readability. |
| */ |
| #define NUMDATALINES 10 |
| |
| /* transition_struct_out() definitions. */ |
| #define TRANS_STRUCT_PRINT_LENGTH 14 |
| |
| /* Returns true if an nfa state has an epsilon out-transition slot |
| * that can be used. This definition is currently not used. |
| */ |
| #define FREE_EPSILON(state) \ |
| (transchar[state] == SYM_EPSILON && \ |
| trans2[state] == NO_TRANSITION && \ |
| finalst[state] != state) |
| |
| /* Returns true if an nfa state has an epsilon out-transition character |
| * and both slots are free |
| */ |
| #define SUPER_FREE_EPSILON(state) \ |
| (transchar[state] == SYM_EPSILON && \ |
| trans1[state] == NO_TRANSITION) \ |
| |
| /* Maximum number of NFA states that can comprise a DFA state. It's real |
| * big because if there's a lot of rules, the initial state will have a |
| * huge epsilon closure. |
| */ |
| #define INITIAL_MAX_DFA_SIZE 750 |
| #define MAX_DFA_SIZE_INCREMENT 750 |
| |
| |
| /* A note on the following masks. They are used to mark accepting numbers |
| * as being special. As such, they implicitly limit the number of accepting |
| * numbers (i.e., rules) because if there are too many rules the rule numbers |
| * will overload the mask bits. Fortunately, this limit is \large/ (0x2000 == |
| * 8192) so unlikely to actually cause any problems. A check is made in |
| * new_rule() to ensure that this limit is not reached. |
| */ |
| |
| /* Mask to mark a trailing context accepting number. */ |
| #define YY_TRAILING_MASK 0x2000 |
| |
| /* Mask to mark the accepting number of the "head" of a trailing context |
| * rule. |
| */ |
| #define YY_TRAILING_HEAD_MASK 0x4000 |
| |
| /* Maximum number of rules, as outlined in the above note. */ |
| #define MAX_RULE (YY_TRAILING_MASK - 1) |
| |
| |
| /* NIL must be 0. If not, its special meaning when making equivalence classes |
| * (it marks the representative of a given e.c.) will be unidentifiable. |
| */ |
| #define NIL 0 |
| |
| #define JAM -1 /* to mark a missing DFA transition */ |
| #define NO_TRANSITION NIL |
| #define UNIQUE -1 /* marks a symbol as an e.c. representative */ |
| #define INFINITY -1 /* for x{5,} constructions */ |
| |
| #define INITIAL_MAX_CCLS 100 /* max number of unique character classes */ |
| #define MAX_CCLS_INCREMENT 100 |
| |
| /* Size of table holding members of character classes. */ |
| #define INITIAL_MAX_CCL_TBL_SIZE 500 |
| #define MAX_CCL_TBL_SIZE_INCREMENT 250 |
| |
| #define INITIAL_MAX_RULES 100 /* default maximum number of rules */ |
| #define MAX_RULES_INCREMENT 100 |
| |
| #define INITIAL_MNS 2000 /* default maximum number of nfa states */ |
| #define MNS_INCREMENT 1000 /* amount to bump above by if it's not enough */ |
| |
| #define INITIAL_MAX_DFAS 1000 /* default maximum number of dfa states */ |
| #define MAX_DFAS_INCREMENT 1000 |
| |
| #define JAMSTATE -32766 /* marks a reference to the state that always jams */ |
| |
| /* Maximum number of NFA states. */ |
| #define MAXIMUM_MNS 31999 |
| |
| /* Enough so that if it's subtracted from an NFA state number, the result |
| * is guaranteed to be negative. |
| */ |
| #define MARKER_DIFFERENCE (MAXIMUM_MNS+2) |
| |
| /* Maximum number of nxt/chk pairs for non-templates. */ |
| #define INITIAL_MAX_XPAIRS 2000 |
| #define MAX_XPAIRS_INCREMENT 2000 |
| |
| /* Maximum number of nxt/chk pairs needed for templates. */ |
| #define INITIAL_MAX_TEMPLATE_XPAIRS 2500 |
| #define MAX_TEMPLATE_XPAIRS_INCREMENT 2500 |
| |
| #define SYM_EPSILON (CSIZE + 1) /* to mark transitions on the symbol epsilon */ |
| |
| #define INITIAL_MAX_SCS 40 /* maximum number of start conditions */ |
| #define MAX_SCS_INCREMENT 40 /* amount to bump by if it's not enough */ |
| |
| #define ONE_STACK_SIZE 500 /* stack of states with only one out-transition */ |
| #define SAME_TRANS -1 /* transition is the same as "default" entry for state */ |
| |
| /* The following percentages are used to tune table compression: |
| |
| * The percentage the number of out-transitions a state must be of the |
| * number of equivalence classes in order to be considered for table |
| * compaction by using protos. |
| */ |
| #define PROTO_SIZE_PERCENTAGE 15 |
| |
| /* The percentage the number of homogeneous out-transitions of a state |
| * must be of the number of total out-transitions of the state in order |
| * that the state's transition table is first compared with a potential |
| * template of the most common out-transition instead of with the first |
| * proto in the proto queue. |
| */ |
| #define CHECK_COM_PERCENTAGE 50 |
| |
| /* The percentage the number of differences between a state's transition |
| * table and the proto it was first compared with must be of the total |
| * number of out-transitions of the state in order to keep the first |
| * proto as a good match and not search any further. |
| */ |
| #define FIRST_MATCH_DIFF_PERCENTAGE 10 |
| |
| /* The percentage the number of differences between a state's transition |
| * table and the most similar proto must be of the state's total number |
| * of out-transitions to use the proto as an acceptable close match. |
| */ |
| #define ACCEPTABLE_DIFF_PERCENTAGE 50 |
| |
| /* The percentage the number of homogeneous out-transitions of a state |
| * must be of the number of total out-transitions of the state in order |
| * to consider making a template from the state. |
| */ |
| #define TEMPLATE_SAME_PERCENTAGE 60 |
| |
| /* The percentage the number of differences between a state's transition |
| * table and the most similar proto must be of the state's total number |
| * of out-transitions to create a new proto from the state. |
| */ |
| #define NEW_PROTO_DIFF_PERCENTAGE 20 |
| |
| /* The percentage the total number of out-transitions of a state must be |
| * of the number of equivalence classes in order to consider trying to |
| * fit the transition table into "holes" inside the nxt/chk table. |
| */ |
| #define INTERIOR_FIT_PERCENTAGE 15 |
| |
| /* Size of region set aside to cache the complete transition table of |
| * protos on the proto queue to enable quick comparisons. |
| */ |
| #define PROT_SAVE_SIZE 2000 |
| |
| #define MSP 50 /* maximum number of saved protos (protos on the proto queue) */ |
| |
| /* Maximum number of out-transitions a state can have that we'll rummage |
| * around through the interior of the internal fast table looking for a |
| * spot for it. |
| */ |
| #define MAX_XTIONS_FULL_INTERIOR_FIT 4 |
| |
| /* Maximum number of rules which will be reported as being associated |
| * with a DFA state. |
| */ |
| #define MAX_ASSOC_RULES 100 |
| |
| /* Number that, if used to subscript an array, has a good chance of producing |
| * an error; should be small enough to fit into a short. |
| */ |
| #define BAD_SUBSCRIPT -32767 |
| |
| /* Absolute value of largest number that can be stored in a short, with a |
| * bit of slop thrown in for general paranoia. |
| */ |
| #define MAX_SHORT 32700 |
| |
| |
| /* Declarations for global variables. */ |
| |
| /* Variables for symbol tables: |
| * sctbl - start-condition symbol table |
| * ndtbl - name-definition symbol table |
| * ccltab - character class text symbol table |
| */ |
| |
| struct hash_entry |
| { |
| struct hash_entry *prev, *next; |
| char *name; |
| char *str_val; |
| int int_val; |
| } ; |
| |
| typedef struct hash_entry **hash_table; |
| |
| #define NAME_TABLE_HASH_SIZE 101 |
| #define START_COND_HASH_SIZE 101 |
| #define CCL_HASH_SIZE 101 |
| |
| extern struct hash_entry *ndtbl[NAME_TABLE_HASH_SIZE]; |
| extern struct hash_entry *sctbl[START_COND_HASH_SIZE]; |
| extern struct hash_entry *ccltab[CCL_HASH_SIZE]; |
| |
| |
| /* Variables for flags: |
| * printstats - if true (-v), dump statistics |
| * syntaxerror - true if a syntax error has been found |
| * eofseen - true if we've seen an eof in the input file |
| * ddebug - if true (-d), make a "debug" scanner |
| * trace - if true (-T), trace processing |
| * nowarn - if true (-w), do not generate warnings |
| * spprdflt - if true (-s), suppress the default rule |
| * interactive - if true (-I), generate an interactive scanner |
| * caseins - if true (-i), generate a case-insensitive scanner |
| * lex_compat - if true (-l), maximize compatibility with AT&T lex |
| * do_yylineno - if true, generate code to maintain yylineno |
| * useecs - if true (-Ce flag), use equivalence classes |
| * fulltbl - if true (-Cf flag), don't compress the DFA state table |
| * usemecs - if true (-Cm flag), use meta-equivalence classes |
| * fullspd - if true (-F flag), use Jacobson method of table representation |
| * gen_line_dirs - if true (i.e., no -L flag), generate #line directives |
| * performance_report - if > 0 (i.e., -p flag), generate a report relating |
| * to scanner performance; if > 1 (-p -p), report on minor performance |
| * problems, too |
| * backing_up_report - if true (i.e., -b flag), generate "lex.backup" file |
| * listing backing-up states |
| * C_plus_plus - if true (i.e., -+ flag), generate a C++ scanner class; |
| * otherwise, a standard C scanner |
| * long_align - if true (-Ca flag), favor long-word alignment. |
| * use_read - if true (-f, -F, or -Cr) then use read() for scanner input; |
| * otherwise, use fread(). |
| * yytext_is_array - if true (i.e., %array directive), then declare |
| * yytext as a array instead of a character pointer. Nice and inefficient. |
| * do_yywrap - do yywrap() processing on EOF. If false, EOF treated as |
| * "no more files". |
| * csize - size of character set for the scanner we're generating; |
| * 128 for 7-bit chars and 256 for 8-bit |
| * yymore_used - if true, yymore() is used in input rules |
| * reject - if true, generate back-up tables for REJECT macro |
| * real_reject - if true, scanner really uses REJECT (as opposed to just |
| * having "reject" set for variable trailing context) |
| * continued_action - true if this rule's action is to "fall through" to |
| * the next rule's action (i.e., the '|' action) |
| * in_rule - true if we're inside an individual rule, false if not. |
| * yymore_really_used - whether to treat yymore() as really used, regardless |
| * of what we think based on references to it in the user's actions. |
| * reject_really_used - same for REJECT |
| */ |
| |
| extern int printstats, syntaxerror, eofseen, ddebug, trace, nowarn, spprdflt; |
| extern int interactive, caseins, lex_compat, do_yylineno; |
| extern int useecs, fulltbl, usemecs, fullspd; |
| extern int gen_line_dirs, performance_report, backing_up_report; |
| extern int C_plus_plus, long_align, use_read, yytext_is_array, do_yywrap; |
| extern int csize; |
| extern int yymore_used, reject, real_reject, continued_action, in_rule; |
| |
| extern int yymore_really_used, reject_really_used; |
| |
| |
| /* Variables used in the flex input routines: |
| * datapos - characters on current output line |
| * dataline - number of contiguous lines of data in current data |
| * statement. Used to generate readable -f output |
| * linenum - current input line number |
| * out_linenum - current output line number |
| * skelfile - the skeleton file |
| * skel - compiled-in skeleton array |
| * skel_ind - index into "skel" array, if skelfile is nil |
| * yyin - input file |
| * backing_up_file - file to summarize backing-up states to |
| * infilename - name of input file |
| * outfilename - name of output file |
| * did_outfilename - whether outfilename was explicitly set |
| * prefix - the prefix used for externally visible names ("yy" by default) |
| * yyclass - yyFlexLexer subclass to use for YY_DECL |
| * do_stdinit - whether to initialize yyin/yyout to stdin/stdout |
| * use_stdout - the -t flag |
| * input_files - array holding names of input files |
| * num_input_files - size of input_files array |
| * program_name - name with which program was invoked |
| * |
| * action_array - array to hold the rule actions |
| * action_size - size of action_array |
| * defs1_offset - index where the user's section 1 definitions start |
| * in action_array |
| * prolog_offset - index where the prolog starts in action_array |
| * action_offset - index where the non-prolog starts in action_array |
| * action_index - index where the next action should go, with respect |
| * to "action_array" |
| */ |
| |
| extern int datapos, dataline, linenum, out_linenum; |
| extern FILE *skelfile, *yyin, *backing_up_file; |
| extern const char *skel[]; |
| extern int skel_ind; |
| extern char *infilename, *outfilename; |
| extern int did_outfilename; |
| extern char *prefix, *yyclass; |
| extern int do_stdinit, use_stdout; |
| extern char **input_files; |
| extern int num_input_files; |
| extern char *program_name; |
| |
| extern char *action_array; |
| extern int action_size; |
| extern int defs1_offset, prolog_offset, action_offset, action_index; |
| |
| |
| /* Variables for stack of states having only one out-transition: |
| * onestate - state number |
| * onesym - transition symbol |
| * onenext - target state |
| * onedef - default base entry |
| * onesp - stack pointer |
| */ |
| |
| extern int onestate[ONE_STACK_SIZE], onesym[ONE_STACK_SIZE]; |
| extern int onenext[ONE_STACK_SIZE], onedef[ONE_STACK_SIZE], onesp; |
| |
| |
| /* Variables for nfa machine data: |
| * current_mns - current maximum on number of NFA states |
| * num_rules - number of the last accepting state; also is number of |
| * rules created so far |
| * num_eof_rules - number of <<EOF>> rules |
| * default_rule - number of the default rule |
| * current_max_rules - current maximum number of rules |
| * lastnfa - last nfa state number created |
| * firstst - physically the first state of a fragment |
| * lastst - last physical state of fragment |
| * finalst - last logical state of fragment |
| * transchar - transition character |
| * trans1 - transition state |
| * trans2 - 2nd transition state for epsilons |
| * accptnum - accepting number |
| * assoc_rule - rule associated with this NFA state (or 0 if none) |
| * state_type - a STATE_xxx type identifying whether the state is part |
| * of a normal rule, the leading state in a trailing context |
| * rule (i.e., the state which marks the transition from |
| * recognizing the text-to-be-matched to the beginning of |
| * the trailing context), or a subsequent state in a trailing |
| * context rule |
| * rule_type - a RULE_xxx type identifying whether this a ho-hum |
| * normal rule or one which has variable head & trailing |
| * context |
| * rule_linenum - line number associated with rule |
| * rule_useful - true if we've determined that the rule can be matched |
| */ |
| |
| extern int current_mns, current_max_rules; |
| extern int num_rules, num_eof_rules, default_rule, lastnfa; |
| extern int *firstst, *lastst, *finalst, *transchar, *trans1, *trans2; |
| extern int *accptnum, *assoc_rule, *state_type; |
| extern int *rule_type, *rule_linenum, *rule_useful; |
| |
| /* Different types of states; values are useful as masks, as well, for |
| * routines like check_trailing_context(). |
| */ |
| #define STATE_NORMAL 0x1 |
| #define STATE_TRAILING_CONTEXT 0x2 |
| |
| /* Global holding current type of state we're making. */ |
| |
| extern int current_state_type; |
| |
| /* Different types of rules. */ |
| #define RULE_NORMAL 0 |
| #define RULE_VARIABLE 1 |
| |
| /* True if the input rules include a rule with both variable-length head |
| * and trailing context, false otherwise. |
| */ |
| extern int variable_trailing_context_rules; |
| |
| |
| /* Variables for protos: |
| * numtemps - number of templates created |
| * numprots - number of protos created |
| * protprev - backlink to a more-recently used proto |
| * protnext - forward link to a less-recently used proto |
| * prottbl - base/def table entry for proto |
| * protcomst - common state of proto |
| * firstprot - number of the most recently used proto |
| * lastprot - number of the least recently used proto |
| * protsave contains the entire state array for protos |
| */ |
| |
| extern int numtemps, numprots, protprev[MSP], protnext[MSP], prottbl[MSP]; |
| extern int protcomst[MSP], firstprot, lastprot, protsave[PROT_SAVE_SIZE]; |
| |
| |
| /* Variables for managing equivalence classes: |
| * numecs - number of equivalence classes |
| * nextecm - forward link of Equivalence Class members |
| * ecgroup - class number or backward link of EC members |
| * nummecs - number of meta-equivalence classes (used to compress |
| * templates) |
| * tecfwd - forward link of meta-equivalence classes members |
| * tecbck - backward link of MEC's |
| */ |
| |
| /* Reserve enough room in the equivalence class arrays so that we |
| * can use the CSIZE'th element to hold equivalence class information |
| * for the NUL character. Later we'll move this information into |
| * the 0th element. |
| */ |
| extern int numecs, nextecm[CSIZE + 1], ecgroup[CSIZE + 1], nummecs; |
| |
| /* Meta-equivalence classes are indexed starting at 1, so it's possible |
| * that they will require positions from 1 .. CSIZE, i.e., CSIZE + 1 |
| * slots total (since the arrays are 0-based). nextecm[] and ecgroup[] |
| * don't require the extra position since they're indexed from 1 .. CSIZE - 1. |
| */ |
| extern int tecfwd[CSIZE + 1], tecbck[CSIZE + 1]; |
| |
| |
| /* Variables for start conditions: |
| * lastsc - last start condition created |
| * current_max_scs - current limit on number of start conditions |
| * scset - set of rules active in start condition |
| * scbol - set of rules active only at the beginning of line in a s.c. |
| * scxclu - true if start condition is exclusive |
| * sceof - true if start condition has EOF rule |
| * scname - start condition name |
| */ |
| |
| extern int lastsc, *scset, *scbol, *scxclu, *sceof; |
| extern int current_max_scs; |
| extern char **scname; |
| |
| |
| /* Variables for dfa machine data: |
| * current_max_dfa_size - current maximum number of NFA states in DFA |
| * current_max_xpairs - current maximum number of non-template xtion pairs |
| * current_max_template_xpairs - current maximum number of template pairs |
| * current_max_dfas - current maximum number DFA states |
| * lastdfa - last dfa state number created |
| * nxt - state to enter upon reading character |
| * chk - check value to see if "nxt" applies |
| * tnxt - internal nxt table for templates |
| * base - offset into "nxt" for given state |
| * def - where to go if "chk" disallows "nxt" entry |
| * nultrans - NUL transition for each state |
| * NUL_ec - equivalence class of the NUL character |
| * tblend - last "nxt/chk" table entry being used |
| * firstfree - first empty entry in "nxt/chk" table |
| * dss - nfa state set for each dfa |
| * dfasiz - size of nfa state set for each dfa |
| * dfaacc - accepting set for each dfa state (if using REJECT), or accepting |
| * number, if not |
| * accsiz - size of accepting set for each dfa state |
| * dhash - dfa state hash value |
| * numas - number of DFA accepting states created; note that this |
| * is not necessarily the same value as num_rules, which is the analogous |
| * value for the NFA |
| * numsnpairs - number of state/nextstate transition pairs |
| * jambase - position in base/def where the default jam table starts |
| * jamstate - state number corresponding to "jam" state |
| * end_of_buffer_state - end-of-buffer dfa state number |
| */ |
| |
| extern int current_max_dfa_size, current_max_xpairs; |
| extern int current_max_template_xpairs, current_max_dfas; |
| extern int lastdfa, *nxt, *chk, *tnxt; |
| extern int *base, *def, *nultrans, NUL_ec, tblend, firstfree, **dss, *dfasiz; |
| extern union dfaacc_union |
| { |
| int *dfaacc_set; |
| int dfaacc_state; |
| } *dfaacc; |
| extern int *accsiz, *dhash, numas; |
| extern int numsnpairs, jambase, jamstate; |
| extern int end_of_buffer_state; |
| |
| /* Variables for ccl information: |
| * lastccl - ccl index of the last created ccl |
| * current_maxccls - current limit on the maximum number of unique ccl's |
| * cclmap - maps a ccl index to its set pointer |
| * ccllen - gives the length of a ccl |
| * cclng - true for a given ccl if the ccl is negated |
| * cclreuse - counts how many times a ccl is re-used |
| * current_max_ccl_tbl_size - current limit on number of characters needed |
| * to represent the unique ccl's |
| * ccltbl - holds the characters in each ccl - indexed by cclmap |
| */ |
| |
| extern int lastccl, *cclmap, *ccllen, *cclng, cclreuse; |
| extern int current_maxccls, current_max_ccl_tbl_size; |
| extern Char *ccltbl; |
| |
| |
| /* Variables for miscellaneous information: |
| * nmstr - last NAME scanned by the scanner |
| * sectnum - section number currently being parsed |
| * nummt - number of empty nxt/chk table entries |
| * hshcol - number of hash collisions detected by snstods |
| * dfaeql - number of times a newly created dfa was equal to an old one |
| * numeps - number of epsilon NFA states created |
| * eps2 - number of epsilon states which have 2 out-transitions |
| * num_reallocs - number of times it was necessary to realloc() a group |
| * of arrays |
| * tmpuses - number of DFA states that chain to templates |
| * totnst - total number of NFA states used to make DFA states |
| * peakpairs - peak number of transition pairs we had to store internally |
| * numuniq - number of unique transitions |
| * numdup - number of duplicate transitions |
| * hshsave - number of hash collisions saved by checking number of states |
| * num_backing_up - number of DFA states requiring backing up |
| * bol_needed - whether scanner needs beginning-of-line recognition |
| */ |
| |
| extern char nmstr[MAXLINE]; |
| extern int sectnum, nummt, hshcol, dfaeql, numeps, eps2, num_reallocs; |
| extern int tmpuses, totnst, peakpairs, numuniq, numdup, hshsave; |
| extern int num_backing_up, bol_needed; |
| |
| void *allocate_array PROTO((int, size_t)); |
| void *reallocate_array PROTO((void*, int, size_t)); |
| |
| void *flex_alloc PROTO((size_t)); |
| void *flex_realloc PROTO((void*, size_t)); |
| void flex_free PROTO((void*)); |
| |
| #define allocate_integer_array(size) \ |
| (int *) allocate_array( size, sizeof( int ) ) |
| |
| #define reallocate_integer_array(array,size) \ |
| (int *) reallocate_array( (void *) array, size, sizeof( int ) ) |
| |
| #define allocate_int_ptr_array(size) \ |
| (int **) allocate_array( size, sizeof( int * ) ) |
| |
| #define allocate_char_ptr_array(size) \ |
| (char **) allocate_array( size, sizeof( char * ) ) |
| |
| #define allocate_dfaacc_union(size) \ |
| (union dfaacc_union *) \ |
| allocate_array( size, sizeof( union dfaacc_union ) ) |
| |
| #define reallocate_int_ptr_array(array,size) \ |
| (int **) reallocate_array( (void *) array, size, sizeof( int * ) ) |
| |
| #define reallocate_char_ptr_array(array,size) \ |
| (char **) reallocate_array( (void *) array, size, sizeof( char * ) ) |
| |
| #define reallocate_dfaacc_union(array, size) \ |
| (union dfaacc_union *) \ |
| reallocate_array( (void *) array, size, sizeof( union dfaacc_union ) ) |
| |
| #define allocate_character_array(size) \ |
| (char *) allocate_array( size, sizeof( char ) ) |
| |
| #define reallocate_character_array(array,size) \ |
| (char *) reallocate_array( (void *) array, size, sizeof( char ) ) |
| |
| #define allocate_Character_array(size) \ |
| (Char *) allocate_array( size, sizeof( Char ) ) |
| |
| #define reallocate_Character_array(array,size) \ |
| (Char *) reallocate_array( (void *) array, size, sizeof( Char ) ) |
| |
| |
| /* Used to communicate between scanner and parser. The type should really |
| * be YYSTYPE, but we can't easily get our hands on it. |
| */ |
| extern int yylval; |
| |
| |
| /* External functions that are cross-referenced among the flex source files. */ |
| |
| |
| /* from file ccl.c */ |
| |
| extern void ccladd PROTO((int, int)); /* add a single character to a ccl */ |
| extern int cclinit PROTO((void)); /* make an empty ccl */ |
| extern void cclnegate PROTO((int)); /* negate a ccl */ |
| |
| /* List the members of a set of characters in CCL form. */ |
| extern void list_character_set PROTO((FILE*, int[])); |
| |
| |
| /* from file dfa.c */ |
| |
| /* Check a DFA state for backing up. */ |
| extern void check_for_backing_up PROTO((int, int[])); |
| |
| /* Check to see if NFA state set constitutes "dangerous" trailing context. */ |
| extern void check_trailing_context PROTO((int*, int, int*, int)); |
| |
| /* Construct the epsilon closure of a set of ndfa states. */ |
| extern int *epsclosure PROTO((int*, int*, int[], int*, int*)); |
| |
| /* Increase the maximum number of dfas. */ |
| extern void increase_max_dfas PROTO((void)); |
| |
| extern void ntod PROTO((void)); /* convert a ndfa to a dfa */ |
| |
| /* Converts a set of ndfa states into a dfa state. */ |
| extern int snstods PROTO((int[], int, int[], int, int, int*)); |
| |
| |
| /* from file ecs.c */ |
| |
| /* Convert character classes to set of equivalence classes. */ |
| extern void ccl2ecl PROTO((void)); |
| |
| /* Associate equivalence class numbers with class members. */ |
| extern int cre8ecs PROTO((int[], int[], int)); |
| |
| /* Update equivalence classes based on character class transitions. */ |
| extern void mkeccl PROTO((Char[], int, int[], int[], int, int)); |
| |
| /* Create equivalence class for single character. */ |
| extern void mkechar PROTO((int, int[], int[])); |
| |
| |
| /* from file gen.c */ |
| |
| extern void do_indent PROTO((void)); /* indent to the current level */ |
| |
| /* Generate the code to keep backing-up information. */ |
| extern void gen_backing_up PROTO((void)); |
| |
| /* Generate the code to perform the backing up. */ |
| extern void gen_bu_action PROTO((void)); |
| |
| /* Generate full speed compressed transition table. */ |
| extern void genctbl PROTO((void)); |
| |
| /* Generate the code to find the action number. */ |
| extern void gen_find_action PROTO((void)); |
| |
| extern void genftbl PROTO((void)); /* generate full transition table */ |
| |
| /* Generate the code to find the next compressed-table state. */ |
| extern void gen_next_compressed_state PROTO((char*)); |
| |
| /* Generate the code to find the next match. */ |
| extern void gen_next_match PROTO((void)); |
| |
| /* Generate the code to find the next state. */ |
| extern void gen_next_state PROTO((int)); |
| |
| /* Generate the code to make a NUL transition. */ |
| extern void gen_NUL_trans PROTO((void)); |
| |
| /* Generate the code to find the start state. */ |
| extern void gen_start_state PROTO((void)); |
| |
| /* Generate data statements for the transition tables. */ |
| extern void gentabs PROTO((void)); |
| |
| /* Write out a formatted string at the current indentation level. */ |
| extern void indent_put2s PROTO((char[], char[])); |
| |
| /* Write out a string + newline at the current indentation level. */ |
| extern void indent_puts PROTO((char[])); |
| |
| extern void make_tables PROTO((void)); /* generate transition tables */ |
| |
| |
| /* from file main.c */ |
| |
| extern void check_options PROTO((void)); |
| extern void flexend PROTO((int)); |
| extern void usage PROTO((void)); |
| |
| |
| /* from file misc.c */ |
| |
| /* Add a #define to the action file. */ |
| extern void action_define PROTO(( char *defname, int value )); |
| |
| /* Add the given text to the stored actions. */ |
| extern void add_action PROTO(( char *new_text )); |
| |
| /* True if a string is all lower case. */ |
| extern int all_lower PROTO((register char *)); |
| |
| /* True if a string is all upper case. */ |
| extern int all_upper PROTO((register char *)); |
| |
| /* Bubble sort an integer array. */ |
| extern void bubble PROTO((int [], int)); |
| |
| /* Check a character to make sure it's in the expected range. */ |
| extern void check_char PROTO((int c)); |
| |
| /* Replace upper-case letter to lower-case. */ |
| extern Char clower PROTO((int)); |
| |
| /* Returns a dynamically allocated copy of a string. */ |
| extern char *copy_string PROTO((register const char *)); |
| |
| /* Returns a dynamically allocated copy of a (potentially) unsigned string. */ |
| extern Char *copy_unsigned_string PROTO((register Char *)); |
| |
| /* Shell sort a character array. */ |
| extern void cshell PROTO((Char [], int, int)); |
| |
| /* Finish up a block of data declarations. */ |
| extern void dataend PROTO((void)); |
| |
| /* Flush generated data statements. */ |
| extern void dataflush PROTO((void)); |
| |
| /* Report an error message and terminate. */ |
| extern void flexerror PROTO((const char[])); |
| |
| /* Report a fatal error message and terminate. */ |
| extern void flexfatal PROTO((const char[])); |
| |
| /* Convert a hexadecimal digit string to an integer value. */ |
| extern int htoi PROTO((Char[])); |
| |
| /* Report an error message formatted with one integer argument. */ |
| extern void lerrif PROTO((const char[], int)); |
| |
| /* Report an error message formatted with one string argument. */ |
| extern void lerrsf PROTO((const char[], const char[])); |
| |
| /* Spit out a "#line" statement. */ |
| extern void line_directive_out PROTO((FILE*, int)); |
| |
| /* Mark the current position in the action array as the end of the section 1 |
| * user defs. |
| */ |
| extern void mark_defs1 PROTO((void)); |
| |
| /* Mark the current position in the action array as the end of the prolog. */ |
| extern void mark_prolog PROTO((void)); |
| |
| /* Generate a data statment for a two-dimensional array. */ |
| extern void mk2data PROTO((int)); |
| |
| extern void mkdata PROTO((int)); /* generate a data statement */ |
| |
| /* Return the integer represented by a string of digits. */ |
| extern int myctoi PROTO((char [])); |
| |
| /* Return character corresponding to escape sequence. */ |
| extern Char myesc PROTO((Char[])); |
| |
| /* Convert an octal digit string to an integer value. */ |
| extern int otoi PROTO((Char [] )); |
| |
| /* Output a (possibly-formatted) string to the generated scanner. */ |
| extern void out PROTO((const char [])); |
| extern void out_dec PROTO((const char [], int)); |
| extern void out_dec2 PROTO((const char [], int, int)); |
| extern void out_hex PROTO((const char [], unsigned int)); |
| extern void out_line_count PROTO((const char [])); |
| extern void out_str PROTO((const char [], const char [])); |
| extern void out_str3 |
| PROTO((const char [], const char [], const char [], const char [])); |
| extern void out_str_dec PROTO((const char [], const char [], int)); |
| extern void outc PROTO((int)); |
| extern void outn PROTO((const char [])); |
| |
| /* Return a printable version of the given character, which might be |
| * 8-bit. |
| */ |
| extern char *readable_form PROTO((int)); |
| |
| /* Write out one section of the skeleton file. */ |
| extern void skelout PROTO((void)); |
| |
| /* Output a yy_trans_info structure. */ |
| extern void transition_struct_out PROTO((int, int)); |
| |
| /* Only needed when using certain broken versions of bison to build parse.c. */ |
| extern void *yy_flex_xmalloc PROTO(( int )); |
| |
| /* Set a region of memory to 0. */ |
| extern void zero_out PROTO((char *, size_t)); |
| |
| |
| /* from file nfa.c */ |
| |
| /* Add an accepting state to a machine. */ |
| extern void add_accept PROTO((int, int)); |
| |
| /* Make a given number of copies of a singleton machine. */ |
| extern int copysingl PROTO((int, int)); |
| |
| /* Debugging routine to write out an nfa. */ |
| extern void dumpnfa PROTO((int)); |
| |
| /* Finish up the processing for a rule. */ |
| extern void finish_rule PROTO((int, int, int, int)); |
| |
| /* Connect two machines together. */ |
| extern int link_machines PROTO((int, int)); |
| |
| /* Mark each "beginning" state in a machine as being a "normal" (i.e., |
| * not trailing context associated) state. |
| */ |
| extern void mark_beginning_as_normal PROTO((register int)); |
| |
| /* Make a machine that branches to two machines. */ |
| extern int mkbranch PROTO((int, int)); |
| |
| extern int mkclos PROTO((int)); /* convert a machine into a closure */ |
| extern int mkopt PROTO((int)); /* make a machine optional */ |
| |
| /* Make a machine that matches either one of two machines. */ |
| extern int mkor PROTO((int, int)); |
| |
| /* Convert a machine into a positive closure. */ |
| extern int mkposcl PROTO((int)); |
| |
| extern int mkrep PROTO((int, int, int)); /* make a replicated machine */ |
| |
| /* Create a state with a transition on a given symbol. */ |
| extern int mkstate PROTO((int)); |
| |
| extern void new_rule PROTO((void)); /* initialize for a new rule */ |
| |
| |
| /* from file parse.y */ |
| |
| /* Build the "<<EOF>>" action for the active start conditions. */ |
| extern void build_eof_action PROTO((void)); |
| |
| /* Write out a message formatted with one string, pinpointing its location. */ |
| extern void format_pinpoint_message PROTO((char[], char[])); |
| |
| /* Write out a message, pinpointing its location. */ |
| extern void pinpoint_message PROTO((char[])); |
| |
| /* Write out a warning, pinpointing it at the given line. */ |
| extern void line_warning PROTO(( char[], int )); |
| |
| /* Write out a message, pinpointing it at the given line. */ |
| extern void line_pinpoint PROTO(( char[], int )); |
| |
| /* Report a formatted syntax error. */ |
| extern void format_synerr PROTO((char [], char[])); |
| extern void synerr PROTO((char [])); /* report a syntax error */ |
| extern void format_warn PROTO((char [], char[])); |
| extern void warn PROTO((char [])); /* report a warning */ |
| extern void yyerror PROTO((char [])); /* report a parse error */ |
| extern int yyparse PROTO((void)); /* the YACC parser */ |
| |
| |
| /* from file scan.l */ |
| |
| /* The Flex-generated scanner for flex. */ |
| extern int flexscan PROTO((void)); |
| |
| /* Open the given file (if NULL, stdin) for scanning. */ |
| extern void set_input_file PROTO((char*)); |
| |
| /* Wrapup a file in the lexical analyzer. */ |
| extern int yywrap PROTO((void)); |
| |
| |
| /* from file sym.c */ |
| |
| /* Add symbol and definitions to symbol table. */ |
| extern int addsym PROTO((register char[], char*, int, hash_table, int)); |
| |
| /* Save the text of a character class. */ |
| extern void cclinstal PROTO ((Char [], int)); |
| |
| /* Lookup the number associated with character class. */ |
| extern int ccllookup PROTO((Char [])); |
| |
| /* Find symbol in symbol table. */ |
| extern struct hash_entry *findsym PROTO((register char[], hash_table, int )); |
| |
| extern void ndinstal PROTO((char[], Char[])); /* install a name definition */ |
| extern Char *ndlookup PROTO((char[])); /* lookup a name definition */ |
| |
| /* Increase maximum number of SC's. */ |
| extern void scextend PROTO((void)); |
| extern void scinstal PROTO((char[], int)); /* make a start condition */ |
| |
| /* Lookup the number associated with a start condition. */ |
| extern int sclookup PROTO((char[])); |
| |
| |
| /* from file tblcmp.c */ |
| |
| /* Build table entries for dfa state. */ |
| extern void bldtbl PROTO((int[], int, int, int, int)); |
| |
| extern void cmptmps PROTO((void)); /* compress template table entries */ |
| extern void expand_nxt_chk PROTO((void)); /* increase nxt/chk arrays */ |
| /* Finds a space in the table for a state to be placed. */ |
| extern int find_table_space PROTO((int*, int)); |
| extern void inittbl PROTO((void)); /* initialize transition tables */ |
| /* Make the default, "jam" table entries. */ |
| extern void mkdeftbl PROTO((void)); |
| |
| /* Create table entries for a state (or state fragment) which has |
| * only one out-transition. |
| */ |
| extern void mk1tbl PROTO((int, int, int, int)); |
| |
| /* Place a state into full speed transition table. */ |
| extern void place_state PROTO((int*, int, int)); |
| |
| /* Save states with only one out-transition to be processed later. */ |
| extern void stack1 PROTO((int, int, int, int)); |
| |
| |
| /* from file yylex.c */ |
| |
| extern int yylex PROTO((void)); |