diff options
Diffstat (limited to 'usr.bin/lex/flexdef.h')
| -rw-r--r-- | usr.bin/lex/flexdef.h | 248 |
1 files changed, 197 insertions, 51 deletions
diff --git a/usr.bin/lex/flexdef.h b/usr.bin/lex/flexdef.h index bf5c10d..3969fdf 100644 --- a/usr.bin/lex/flexdef.h +++ b/usr.bin/lex/flexdef.h @@ -6,7 +6,7 @@ * * 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. @@ -26,21 +26,50 @@ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ -/* @(#) $Header: /home/ncvs/src/usr.bin/lex/flexdef.h,v 1.1.1.1 1994/08/24 13:10:32 csgr Exp $ (LBL) */ +/* @(#) $Header: /home/ncvs/src/usr.bin/lex/flexdef.h,v 1.1.1.2 1996/06/19 20:26:08 nate Exp $ (LBL) */ #include <stdio.h> #include <ctype.h> -#if HAVE_STRING_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 -#if __STDC__ +#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 @@ -51,7 +80,7 @@ #endif #ifndef PROTO -#ifdef __STDC__ +#if __STDC__ #define PROTO(proto) proto #else #define PROTO(proto) () @@ -59,9 +88,11 @@ #endif #ifdef VMS -#define unlink delete +#ifndef __VMS_POSIX +#define unlink remove #define SHORT_FILE_NAMES #endif +#endif #ifdef MS_DOS #define SHORT_FILE_NAMES @@ -90,6 +121,7 @@ #define true 1 #define false 0 +#define unspecified -1 /* Special chk[] values marking the slots taking by end-of-buffer and action @@ -106,8 +138,8 @@ */ #define NUMDATALINES 10 -/* Transition_struct_out() definitions. */ -#define TRANS_STRUCT_PRINT_LENGTH 15 +/* 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. @@ -180,11 +212,13 @@ #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 32000 -#define MAXIMUM_MNS 31999 +#define MARKER_DIFFERENCE (MAXIMUM_MNS+2) /* Maximum number of nxt/chk pairs for non-templates. */ #define INITIAL_MAX_XPAIRS 2000 @@ -212,7 +246,7 @@ /* 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 + * 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. */ @@ -300,7 +334,7 @@ typedef struct hash_entry **hash_table; #define START_COND_HASH_SIZE 101 #define CCL_HASH_SIZE 101 -extern struct hash_entry *ndtbl[NAME_TABLE_HASH_SIZE]; +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]; @@ -316,6 +350,7 @@ extern struct hash_entry *ccltab[CCL_HASH_SIZE]; * 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 @@ -333,6 +368,8 @@ extern struct hash_entry *ccltab[CCL_HASH_SIZE]; * 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 @@ -341,20 +378,20 @@ extern struct hash_entry *ccltab[CCL_HASH_SIZE]; * 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) - * yymore_really_used - has a REALLY_xxx value indicating whether a - * %used or %notused was used with yymore() + * 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, useecs, fulltbl, usemecs; -extern int fullspd, gen_line_dirs, performance_report, backing_up_report; -extern int C_plus_plus, long_align, use_read, yytext_is_array, csize; -extern int yymore_used, reject, real_reject, continued_action; - -#define REALLY_NOT_DETERMINED 0 -#define REALLY_USED 1 -#define REALLY_NOT_USED 2 +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; @@ -363,15 +400,22 @@ extern int yymore_really_used, reject_really_used; * 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 + * program_name - name with which program was invoked * * action_array - array to hold the rule actions * action_size - size of action_array @@ -383,11 +427,14 @@ extern int yymore_really_used, reject_really_used; * to "action_array" */ -extern int datapos, dataline, linenum; +extern int datapos, dataline, linenum, out_linenum; extern FILE *skelfile, *yyin, *backing_up_file; -extern char *skel[]; +extern const char *skel[]; extern int skel_ind; -extern char *infilename; +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; @@ -438,8 +485,8 @@ extern int onenext[ONE_STACK_SIZE], onedef[ONE_STACK_SIZE], onesp; * rule_useful - true if we've determined that the rule can be matched */ -extern int current_mns, num_rules, num_eof_rules, default_rule; -extern int current_max_rules, lastnfa; +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; @@ -513,16 +560,10 @@ extern int tecfwd[CSIZE + 1], tecbck[CSIZE + 1]; * scxclu - true if start condition is exclusive * sceof - true if start condition has EOF rule * scname - start condition name - * actvsc - stack of active start conditions for the current rule; - * a negative entry means that the start condition is *not* - * active for the current rule. Start conditions may appear - * multiple times on the stack; the entry for it closest - * to the top of the stack (i.e., actvsc[actvp]) is the - * one to use. Others are present from "<sc>{" scoping - * constructs. */ -extern int lastsc, current_max_scs, *scset, *scbol, *scxclu, *sceof, *actvsc; +extern int lastsc, *scset, *scbol, *scxclu, *sceof; +extern int current_max_scs; extern char **scname; @@ -581,8 +622,8 @@ extern int end_of_buffer_state; * ccltbl - holds the characters in each ccl - indexed by cclmap */ -extern int lastccl, current_maxccls, *cclmap, *ccllen, *cclng, cclreuse; -extern int current_max_ccl_tbl_size; +extern int lastccl, *cclmap, *ccllen, *cclng, cclreuse; +extern int current_maxccls, current_max_ccl_tbl_size; extern Char *ccltbl; @@ -611,11 +652,11 @@ 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, int)); -void *reallocate_array PROTO((void*, int, int)); +void *allocate_array PROTO((int, size_t)); +void *reallocate_array PROTO((void*, int, size_t)); -void *flex_alloc PROTO((unsigned int)); -void *flex_realloc PROTO((void*, unsigned int)); +void *flex_alloc PROTO((size_t)); +void *flex_realloc PROTO((void*, size_t)); void flex_free PROTO((void*)); #define allocate_integer_array(size) \ @@ -678,11 +719,23 @@ 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 */ @@ -701,17 +754,61 @@ 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 )); @@ -727,26 +824,41 @@ 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((char[])); +extern void flexerror PROTO((const char[])); /* Report a fatal error message and terminate. */ -extern void flexfatal PROTO((char[])); +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((char[], int)); +extern void lerrif PROTO((const char[], int)); /* Report an error message formatted with one string argument. */ -extern void lerrsf PROTO((char[], char[])); +extern void lerrsf PROTO((const char[], const char[])); -/* Spit out a "# line" statement. */ -extern void line_directive_out PROTO((FILE*)); +/* 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. @@ -764,6 +876,25 @@ 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. */ @@ -779,7 +910,7 @@ extern void transition_struct_out PROTO((int, int)); extern void *yy_flex_xmalloc PROTO(( int )); /* Set a region of memory to 0. */ -extern void zero_out PROTO((char *, int)); +extern void zero_out PROTO((char *, size_t)); /* from file nfa.c */ @@ -826,6 +957,9 @@ 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[])); @@ -833,15 +967,17 @@ extern void format_pinpoint_message PROTO((char[], char[])); extern void pinpoint_message PROTO((char[])); /* Write out a warning, pinpointing it at the given line. */ -void line_warning PROTO(( char[], int )); +extern void line_warning PROTO(( char[], int )); /* Write out a message, pinpointing it at the given line. */ -void line_pinpoint PROTO(( char[], int )); +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 */ @@ -859,13 +995,21 @@ 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 */ @@ -881,6 +1025,8 @@ 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)); 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