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FlexLexer.h
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buf.c
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ccl.c
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dfa.c
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ecs.c
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filter.c
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flex.skl
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flexdef.h
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flexint.h
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gen.c
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libmain.c
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libyywrap.c
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main.c
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misc.c
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mkskel.sh
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nfa.c
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options.c
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options.h
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parse.y
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regex.c
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scan.l
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scanflags.c
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scanopt.c
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scanopt.h
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sym.c
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tables.c
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tables.h
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tables_shared.c
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tables_shared.h
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tblcmp.c
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version.h
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yylex.c
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Editing: flexdef.h
/* 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. */ /* This file is part of flex. */ /* Redistribution and use in source and binary forms, with or without */ /* modification, are permitted provided that the following conditions */ /* are met: */ /* 1. Redistributions of source code must retain the above copyright */ /* notice, this list of conditions and the following disclaimer. */ /* 2. Redistributions in binary form must reproduce the above copyright */ /* notice, this list of conditions and the following disclaimer in the */ /* documentation and/or other materials provided with the distribution. */ /* 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 FLEXDEF_H #define FLEXDEF_H 1 #ifdef HAVE_CONFIG_H #include <config.h> #endif #include <stdio.h> #include <stdlib.h> #include <stdarg.h> #include <setjmp.h> #include <ctype.h> #include <libgen.h> /* for XPG version of basename(3) */ #include <string.h> #ifdef HAVE_ASSERT_H #include <assert.h> #else #define assert(Pred) #endif #ifdef HAVE_LIMITS_H #include <limits.h> #endif /* Required: dup() and dup2() in <unistd.h> */ #include <unistd.h> #ifdef HAVE_NETINET_IN_H #include <netinet/in.h> #endif #ifdef HAVE_SYS_PARAMS_H #include <sys/params.h> #endif /* Required: stat() in <sys/stat.h> */ #include <sys/stat.h> /* Required: wait() in <sys/wait.h> */ #include <sys/wait.h> #include <stdbool.h> #include <stdarg.h> /* Required: regcomp(), regexec() and regerror() in <regex.h> */ #include <regex.h> /* Required: strcasecmp() in <strings.h> */ #include <strings.h> #include "flexint.h" /* We use gettext. So, when we write strings which should be translated, we mark them with _() */ #ifdef ENABLE_NLS #ifdef HAVE_LOCALE_H #include <locale.h> #endif /* HAVE_LOCALE_H */ #include "gettext.h" #define _(String) gettext (String) #else #define _(STRING) STRING #endif /* ENABLE_NLS */ /* Always be prepared to generate an 8-bit scanner. */ #define CSIZE 256 /* Size of input alphabet - should be size of ASCII set. */ #ifndef DEFAULT_CSIZE #define DEFAULT_CSIZE 128 #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 /* Whether an integer is a power of two */ #define is_power_of_2(n) ((n) > 0 && ((n) & ((n) - 1)) == 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 /* Number of characters to print a line number, i.e., 1 + log10(INT_MAX) */ #define NUMCHARLINES 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 INFINITE_REPEAT -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 #define MAXIMUM_MNS_LONG 1999999999 /* 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 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 * lex_compat - if true (-l), maximize compatibility with AT&T lex * posix_compat - if true (-X), maximize compatibility with POSIX 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 * reentrant - if true (-R), generate a reentrant C scanner. * bison_bridge_lval - if true (--bison-bridge), bison pure calling convention. * bison_bridge_lloc - if true (--bison-locations), bison yylloc. * 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 * trace_hex - use hexadecimal numbers in trace/debug outputs instead of octals */ extern int printstats, syntaxerror, eofseen, ddebug, trace, nowarn, spprdflt; extern int interactive, lex_compat, posix_compat, do_yylineno; extern int useecs, fulltbl, usemecs, fullspd; extern int gen_line_dirs, performance_report, backing_up_report; extern int reentrant, bison_bridge_lval, bison_bridge_lloc; 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; extern int trace_hex; /* 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 * 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 * headerfilename - name of the .h file to generate * 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; extern FILE *skelfile, *backing_up_file; extern const char *skel[]; extern int skel_ind; extern char *infilename, *outfilename, *headerfilename; extern int did_outfilename; extern char *prefix, *yyclass, *extra_type; 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: * maximum_mns - maximal number of NFA states supported by tables * 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 * rule_has_nl - true if rule could possibly match a newline * ccl_has_nl - true if current ccl could match a newline * nlch - default eol char */ extern int maximum_mns, 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; extern bool *rule_has_nl, *ccl_has_nl; extern int nlch; /* 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 unsigned 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; #ifndef HAVE_REALLOCARRAY void *reallocarray(void *, size_t, size_t); #endif void *allocate_array(int, size_t); void *reallocate_array(void *, int, size_t); #define allocate_integer_array(size) \ allocate_array(size, sizeof(int)) #define reallocate_integer_array(array,size) \ reallocate_array((void *) array, size, sizeof(int)) #define allocate_bool_array(size) \ allocate_array(size, sizeof(bool)) #define reallocate_bool_array(array,size) \ reallocate_array((void *) array, size, sizeof(bool)) #define allocate_int_ptr_array(size) \ allocate_array(size, sizeof(int *)) #define allocate_char_ptr_array(size) \ allocate_array(size, sizeof(char *)) #define allocate_dfaacc_union(size) \ allocate_array(size, sizeof(union dfaacc_union)) #define reallocate_int_ptr_array(array,size) \ reallocate_array((void *) array, size, sizeof(int *)) #define reallocate_char_ptr_array(array,size) \ reallocate_array((void *) array, size, sizeof(char *)) #define reallocate_dfaacc_union(array, size) \ reallocate_array((void *) array, size, sizeof(union dfaacc_union)) #define allocate_character_array(size) \ allocate_array( size, sizeof(char)) #define reallocate_character_array(array,size) \ reallocate_array((void *) array, size, sizeof(char)) #define allocate_Character_array(size) \ allocate_array(size, sizeof(unsigned char)) #define reallocate_Character_array(array,size) \ reallocate_array((void *) array, size, sizeof(unsigned char)) /* External functions that are cross-referenced among the flex source files. */ /* from file ccl.c */ extern void ccladd(int, int); /* add a single character to a ccl */ extern int cclinit(void); /* make an empty ccl */ extern void cclnegate(int); /* negate a ccl */ extern int ccl_set_diff (int a, int b); /* set difference of two ccls. */ extern int ccl_set_union (int a, int b); /* set union of two ccls. */ /* List the members of a set of characters in CCL form. */ extern void list_character_set(FILE *, int[]); /* from file dfa.c */ /* Check a DFA state for backing up. */ extern void check_for_backing_up(int, int[]); /* Check to see if NFA state set constitutes "dangerous" trailing context. */ extern void check_trailing_context(int *, int, int *, int); /* Construct the epsilon closure of a set of ndfa states. */ extern int *epsclosure(int *, int *, int[], int *, int *); /* Increase the maximum number of dfas. */ extern void increase_max_dfas(void); extern void ntod(void); /* convert a ndfa to a dfa */ /* Converts a set of ndfa states into a dfa state. */ extern int snstods(int[], int, int[], int, int, int *); /* from file ecs.c */ /* Convert character classes to set of equivalence classes. */ extern void ccl2ecl(void); /* Associate equivalence class numbers with class members. */ extern int cre8ecs(int[], int[], int); /* Update equivalence classes based on character class transitions. */ extern void mkeccl(unsigned char[], int, int[], int[], int, int); /* Create equivalence class for single character. */ extern void mkechar(int, int[], int[]); /* from file gen.c */ extern void do_indent(void); /* indent to the current level */ /* Generate the code to keep backing-up information. */ extern void gen_backing_up(void); /* Generate the code to perform the backing up. */ extern void gen_bu_action(void); /* Generate full speed compressed transition table. */ extern void genctbl(void); /* Generate the code to find the action number. */ extern void gen_find_action(void); extern void genftbl(void); /* generate full transition table */ /* Generate the code to find the next compressed-table state. */ extern void gen_next_compressed_state(char *); /* Generate the code to find the next match. */ extern void gen_next_match(void); /* Generate the code to find the next state. */ extern void gen_next_state(int); /* Generate the code to make a NUL transition. */ extern void gen_NUL_trans(void); /* Generate the code to find the start state. */ extern void gen_start_state(void); /* Generate data statements for the transition tables. */ extern void gentabs(void); /* Write out a formatted string at the current indentation level. */ extern void indent_put2s(const char *, const char *); /* Write out a string + newline at the current indentation level. */ extern void indent_puts(const char *); extern void make_tables(void); /* generate transition tables */ /* from file main.c */ extern void check_options(void); extern void flexend(int); extern void usage(void); /* from file misc.c */ /* Add a #define to the action file. */ extern void action_define(const char *defname, int value); /* Add the given text to the stored actions. */ extern void add_action(const char *new_text); /* True if a string is all lower case. */ extern int all_lower(char *); /* True if a string is all upper case. */ extern int all_upper(char *); /* Compare two integers for use by qsort. */ extern int intcmp(const void *, const void *); /* Check a character to make sure it's in the expected range. */ extern void check_char(int c); /* Replace upper-case letter to lower-case. */ extern unsigned char clower(int); /* strdup() that fails fatally on allocation failures. */ extern char *xstrdup(const char *); /* Compare two characters for use by qsort with '\0' sorting last. */ extern int cclcmp(const void *, const void *); /* Finish up a block of data declarations. */ extern void dataend(void); /* Flush generated data statements. */ extern void dataflush(void); /* Report an error message and terminate. */ extern void flexerror(const char *); /* Report a fatal error message and terminate. */ extern void flexfatal(const char *); /* Report a fatal error with a pinpoint, and terminate */ #if HAVE_DECL___FUNC__ #define flex_die(msg) \ do{ \ fprintf (stderr,\ _("%s: fatal internal error at %s:%d (%s): %s\n"),\ program_name, __FILE__, (int)__LINE__,\ __func__,msg);\ FLEX_EXIT(1);\ }while(0) #else /* ! HAVE_DECL___FUNC__ */ #define flex_die(msg) \ do{ \ fprintf (stderr,\ _("%s: fatal internal error at %s:%d %s\n"),\ program_name, __FILE__, (int)__LINE__,\ msg);\ FLEX_EXIT(1);\ }while(0) #endif /* ! HAVE_DECL___func__ */ /* Report an error message formatted */ extern void lerr(const char *, ...) #if defined(__GNUC__) && __GNUC__ >= 3 __attribute__((__format__(__printf__, 1, 2))) #endif ; /* Like lerr, but also exit after displaying message. */ extern void lerr_fatal(const char *, ...) #if defined(__GNUC__) && __GNUC__ >= 3 __attribute__((__format__(__printf__, 1, 2))) #endif ; /* Spit out a "#line" statement. */ extern void line_directive_out(FILE *, int); /* Mark the current position in the action array as the end of the section 1 * user defs. */ extern void mark_defs1(void); /* Mark the current position in the action array as the end of the prolog. */ extern void mark_prolog(void); /* Generate a data statment for a two-dimensional array. */ extern void mk2data(int); extern void mkdata(int); /* generate a data statement */ /* Return the integer represented by a string of digits. */ extern int myctoi(const char *); /* Return character corresponding to escape sequence. */ extern unsigned char myesc(unsigned char[]); /* Output a (possibly-formatted) string to the generated scanner. */ extern void out(const char *); extern void out_dec(const char *, int); extern void out_dec2(const char *, int, int); extern void out_hex(const char *, unsigned int); extern void out_str(const char *, const char *); extern void out_str3(const char *, const char *, const char *, const char *); extern void out_str_dec(const char *, const char *, int); extern void outc(int); extern void outn(const char *); extern void out_m4_define(const char* def, const char* val); /* Return a printable version of the given character, which might be * 8-bit. */ extern char *readable_form(int); /* Write out one section of the skeleton file. */ extern void skelout(void); /* Output a yy_trans_info structure. */ extern void transition_struct_out(int, int); /* Only needed when using certain broken versions of bison to build parse.c. */ extern void *yy_flex_xmalloc(int); /* from file nfa.c */ /* Add an accepting state to a machine. */ extern void add_accept(int, int); /* Make a given number of copies of a singleton machine. */ extern int copysingl(int, int); /* Debugging routine to write out an nfa. */ extern void dumpnfa(int); /* Finish up the processing for a rule. */ extern void finish_rule(int, int, int, int, int); /* Connect two machines together. */ extern int link_machines(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(int); /* Make a machine that branches to two machines. */ extern int mkbranch(int, int); extern int mkclos(int); /* convert a machine into a closure */ extern int mkopt(int); /* make a machine optional */ /* Make a machine that matches either one of two machines. */ extern int mkor(int, int); /* Convert a machine into a positive closure. */ extern int mkposcl(int); extern int mkrep(int, int, int); /* make a replicated machine */ /* Create a state with a transition on a given symbol. */ extern int mkstate(int); extern void new_rule(void); /* initialize for a new rule */ /* from file parse.y */ /* Build the "<<EOF>>" action for the active start conditions. */ extern void build_eof_action(void); /* Write out a message formatted with one string, pinpointing its location. */ extern void format_pinpoint_message(const char *, const char *); /* Write out a message, pinpointing its location. */ extern void pinpoint_message(const char *); /* Write out a warning, pinpointing it at the given line. */ extern void line_warning(const char *, int); /* Write out a message, pinpointing it at the given line. */ extern void line_pinpoint(const char *, int); /* Report a formatted syntax error. */ extern void format_synerr(const char *, const char *); extern void synerr(const char *); /* report a syntax error */ extern void format_warn(const char *, const char *); extern void lwarn(const char *); /* report a warning */ extern void yyerror(const char *); /* report a parse error */ extern int yyparse(void); /* the YACC parser */ /* from file scan.l */ /* The Flex-generated scanner for flex. */ extern int flexscan(void); /* Open the given file (if NULL, stdin) for scanning. */ extern void set_input_file(char *); /* from file sym.c */ /* Save the text of a character class. */ extern void cclinstal(char[], int); /* Lookup the number associated with character class. */ extern int ccllookup(char[]); extern void ndinstal(const char *, char[]); /* install a name definition */ extern char *ndlookup(const char *); /* lookup a name definition */ /* Increase maximum number of SC's. */ extern void scextend(void); extern void scinstal(const char *, int); /* make a start condition */ /* Lookup the number associated with a start condition. */ extern int sclookup(const char *); /* from file tblcmp.c */ /* Build table entries for dfa state. */ extern void bldtbl(int[], int, int, int, int); extern void cmptmps(void); /* compress template table entries */ extern void expand_nxt_chk(void); /* increase nxt/chk arrays */ /* Finds a space in the table for a state to be placed. */ extern int find_table_space(int *, int); extern void inittbl(void); /* initialize transition tables */ /* Make the default, "jam" table entries. */ extern void mkdeftbl(void); /* Create table entries for a state (or state fragment) which has * only one out-transition. */ extern void mk1tbl(int, int, int, int); /* Place a state into full speed transition table. */ extern void place_state(int *, int, int); /* Save states with only one out-transition to be processed later. */ extern void stack1(int, int, int, int); /* from file yylex.c */ extern int yylex(void); /* A growable array. See buf.c. */ struct Buf { void *elts; /* elements. */ int nelts; /* number of elements. */ size_t elt_size; /* in bytes. */ int nmax; /* max capacity of elements. */ }; extern void buf_init(struct Buf * buf, size_t elem_size); extern void buf_destroy(struct Buf * buf); extern struct Buf *buf_append(struct Buf * buf, const void *ptr, int n_elem); extern struct Buf *buf_concat(struct Buf* dest, const struct Buf* src); extern struct Buf *buf_strappend(struct Buf *, const char *str); extern struct Buf *buf_strnappend(struct Buf *, const char *str, int nchars); extern struct Buf *buf_strdefine(struct Buf * buf, const char *str, const char *def); extern struct Buf *buf_prints(struct Buf *buf, const char *fmt, const char* s); extern struct Buf *buf_m4_define(struct Buf *buf, const char* def, const char* val); extern struct Buf *buf_m4_undefine(struct Buf *buf, const char* def); extern struct Buf *buf_print_strings(struct Buf * buf, FILE* out); extern struct Buf *buf_linedir(struct Buf *buf, const char* filename, int lineno); extern struct Buf userdef_buf; /* a string buffer for #define's generated by user-options on cmd line. */ extern struct Buf defs_buf; /* a char* buffer to save #define'd some symbols generated by flex. */ extern struct Buf yydmap_buf; /* a string buffer to hold yydmap elements */ extern struct Buf m4defs_buf; /* Holds m4 definitions. */ extern struct Buf top_buf; /* contains %top code. String buffer. */ extern bool no_section3_escape; /* True if the undocumented option --unsafe-no-m4-sect3-escape was passed */ /* For blocking out code from the header file. */ #define OUT_BEGIN_CODE() outn("m4_ifdef( [[M4_YY_IN_HEADER]],,[[m4_dnl") #define OUT_END_CODE() outn("]])") /* For setjmp/longjmp (instead of calling exit(2)). Linkage in main.c */ extern jmp_buf flex_main_jmp_buf; #define FLEX_EXIT(status) longjmp(flex_main_jmp_buf,(status)+1) /* Removes all \n and \r chars from tail of str. returns str. */ extern char *chomp (char *str); /* ctype functions forced to return boolean */ #define b_isalnum(c) (isalnum(c)?true:false) #define b_isalpha(c) (isalpha(c)?true:false) #define b_isascii(c) (isascii(c)?true:false) #define b_isblank(c) (isblank(c)?true:false) #define b_iscntrl(c) (iscntrl(c)?true:false) #define b_isdigit(c) (isdigit(c)?true:false) #define b_isgraph(c) (isgraph(c)?true:false) #define b_islower(c) (islower(c)?true:false) #define b_isprint(c) (isprint(c)?true:false) #define b_ispunct(c) (ispunct(c)?true:false) #define b_isspace(c) (isspace(c)?true:false) #define b_isupper(c) (isupper(c)?true:false) #define b_isxdigit(c) (isxdigit(c)?true:false) /* return true if char is uppercase or lowercase. */ bool has_case(int c); /* Change case of character if possible. */ int reverse_case(int c); /* return false if [c1-c2] is ambiguous for a caseless scanner. */ bool range_covers_case (int c1, int c2); /* * From "filter.c" */ /** A single stdio filter to execute. * The filter may be external, such as "sed", or it * may be internal, as a function call. */ struct filter { int (*filter_func)(struct filter*); /**< internal filter function */ void * extra; /**< extra data passed to filter_func */ int argc; /**< arg count */ const char ** argv; /**< arg vector, \0-terminated */ struct filter * next; /**< next filter or NULL */ }; /* output filter chain */ extern struct filter * output_chain; extern struct filter *filter_create_ext (struct filter * chain, const char *cmd, ...); struct filter *filter_create_int(struct filter *chain, int (*filter_func) (struct filter *), void *extra); extern bool filter_apply_chain(struct filter * chain); extern int filter_truncate(struct filter * chain, int max_len); extern int filter_tee_header(struct filter *chain); extern int filter_fix_linedirs(struct filter *chain); /* * From "regex.c" */ extern regex_t regex_linedir, regex_blank_line; bool flex_init_regex(void); void flex_regcomp(regex_t *preg, const char *regex, int cflags); char *regmatch_dup (regmatch_t * m, const char *src); char *regmatch_cpy (regmatch_t * m, char *dest, const char *src); int regmatch_len (regmatch_t * m); int regmatch_strtol (regmatch_t * m, const char *src, char **endptr, int base); bool regmatch_empty (regmatch_t * m); /* From "scanflags.h" */ typedef unsigned int scanflags_t; extern scanflags_t* _sf_stk; extern size_t _sf_top_ix, _sf_max; /**< stack of scanner flags. */ #define _SF_CASE_INS ((scanflags_t) 0x0001) #define _SF_DOT_ALL ((scanflags_t) 0x0002) #define _SF_SKIP_WS ((scanflags_t) 0x0004) #define sf_top() (_sf_stk[_sf_top_ix]) #define sf_case_ins() (sf_top() & _SF_CASE_INS) #define sf_dot_all() (sf_top() & _SF_DOT_ALL) #define sf_skip_ws() (sf_top() & _SF_SKIP_WS) #define sf_set_case_ins(X) ((X) ? (sf_top() |= _SF_CASE_INS) : (sf_top() &= ~_SF_CASE_INS)) #define sf_set_dot_all(X) ((X) ? (sf_top() |= _SF_DOT_ALL) : (sf_top() &= ~_SF_DOT_ALL)) #define sf_set_skip_ws(X) ((X) ? (sf_top() |= _SF_SKIP_WS) : (sf_top() &= ~_SF_SKIP_WS)) extern void sf_init(void); extern void sf_push(void); extern void sf_pop(void); #endif /* not defined FLEXDEF_H */
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