/* A Bison parser, made from parse.y */ #define CHAR 258 #define NUMBER 259 #define SECTEND 260 #define SCDECL 261 #define XSCDECL 262 #define WHITESPACE 263 #define NAME 264 #define PREVCCL 265 #define EOF_OP 266 #line 6 "parse.y" /*- * Copyright (c) 1990 The Regents of the University of California. * All rights reserved. * * This code is derived from software contributed to Berkeley by * Vern Paxson. * * The United States Government has rights in this work pursuant * to contract no. DE-AC03-76SF00098 between the United States * Department of Energy and the University of California. * * Redistribution and use in source and binary forms are permitted provided * that: (1) source distributions retain this entire copyright notice and * comment, and (2) distributions including binaries display the following * acknowledgement: ``This product includes software developed by the * University of California, Berkeley and its contributors'' in the * documentation or other materials provided with the distribution and in * all advertising materials mentioning features or use of this software. * Neither the name of the University nor the names of its contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #ifndef lint static char rcsid[] = "@(#) $Header: /usr/fsys/odin/a/vern/flex/RCS/parse.y,v 2.7 90/06/27 23:48:31 vern Exp $ (LBL)"; #endif #include "flexdef.h" int pat, scnum, eps, headcnt, trailcnt, anyccl, lastchar, i, actvp, rulelen; int trlcontxt, xcluflg, cclsorted, varlength, variable_trail_rule; Char clower(); void build_eof_action(); void yyerror( char * ); static int madeany = false; /* whether we've made the '.' character class */ int previous_continued_action; /* whether the previous rule's action was '|' */ #ifndef YYLTYPE typedef struct yyltype { int timestamp; int first_line; int first_column; int last_line; int last_column; char *text; } yyltype; #define YYLTYPE yyltype #endif #define YYACCEPT return(0) #define YYABORT return(1) #define YYERROR goto yyerrlab #ifndef YYSTYPE #define YYSTYPE int #endif #ifndef stdin #include #endif #ifndef __STDC__ #define const #endif #define YYFINAL 81 #define YYFLAG -32768 #define YYNTBASE 32 #define YYTRANSLATE(x) ((unsigned)(x) <= 266 ? yytranslate[x] : 51) static const char yytranslate[] = { 0, 2, 2, 2, 2, 2, 2, 2, 2, 2, 12, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 26, 2, 17, 2, 2, 2, 27, 28, 20, 21, 16, 31, 25, 19, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 14, 2, 15, 22, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 29, 2, 30, 13, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 23, 18, 24, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 }; static const short yyrline[] = { 0, 52, 76, 85, 86, 87, 91, 94, 104, 108, 111, 114, 118, 119, 122, 133, 153, 164, 188, 199, 202, 221, 225, 228, 238, 247, 251, 308, 311, 351, 367, 373, 378, 403, 411, 415, 422, 429, 436, 454, 468, 486, 508, 525, 532, 535, 538, 549, 552, 566, 594, 606, 614, 625 }; static const char * const yytname[] = { 0, "error","$illegal.","CHAR","NUMBER","SECTEND","SCDECL","XSCDECL","WHITESPACE","NAME","PREVCCL", "EOF_OP","'\\n'","'^'","'<'","'>'","','","'$'","'|'","'/'","'*'", "'+'","'?'","'{'","'}'","'.'","'\"'","'('","')'","'['","']'", "'-'","goal" }; static const short yyr1[] = { 0, 32, 33, 34, 34, 34, 35, 36, 36, 37, 37, 37, 38, 38, 39, 40, 40, 40, 40, 40, 40, 40, 41, 42, 42, 42, 43, 43, 43, 43, 44, 44, 45, 46, 46, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 48, 48, 49, 49, 49, 50, 50 }; static const short yyr2[] = { 0, 5, 0, 5, 0, 2, 1, 1, 1, 3, 1, 1, 4, 0, 0, 3, 2, 2, 1, 2, 1, 1, 3, 3, 1, 1, 2, 3, 2, 1, 3, 1, 2, 2, 1, 2, 2, 2, 6, 5, 4, 1, 1, 1, 3, 3, 1, 3, 4, 4, 2, 0, 2, 0 }; static const short yydefact[] = { 2, 0, 0, 0, 5, 6, 7, 8, 13, 0, 14, 0, 0, 11, 10, 0, 21, 46, 43, 20, 0, 0, 41, 53, 0, 51, 0, 0, 18, 29, 0, 31, 34, 42, 0, 3, 17, 25, 24, 0, 0, 0, 51, 0, 12, 19, 0, 16, 28, 0, 32, 26, 33, 35, 36, 37, 0, 9, 22, 0, 52, 44, 45, 0, 50, 47, 15, 30, 27, 0, 23, 48, 0, 0, 40, 49, 0, 39, 38, 0, 0, 0 }; static const short yydefgoto[] = { 79, 1, 3, 8, 9, 15, 10, 12, 26, 27, 39, 28, 29, 30, 31, 32, 33, 43, 40 }; static const short yypact[] = {-32768, 55, -2, 63,-32768,-32768,-32768,-32768,-32768, 16,-32768, 12, 1,-32768,-32768, 51,-32768,-32768,-32768,-32768, 19, 33,-32768,-32768, 19, -6, 8, 28,-32768, 54, 19, 19, 44,-32768, 38,-32768,-32768,-32768,-32768, 34, 14, -10,-32768, 2,-32768,-32768, 19,-32768,-32768, 19,-32768, 57, 44,-32768,-32768,-32768, 48,-32768,-32768, 49,-32768, -32768,-32768, 3, 6,-32768,-32768, 19,-32768, 27,-32768, -32768, 73, -1,-32768,-32768, 53,-32768,-32768, 78, 79, -32768 }; static const short yypgoto[] = {-32768, -32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768,-32768, -11, -5,-32768, 31, -31,-32768, 39,-32768 }; #define YYLAST 81 static const short yytable[] = { 52, -1, 16, 76, 17, 64, 64, 42, 49, 36, 4, 18, 19, 13, 20, 21, 47, 60, 62, 41, 44, 14, 17, 77, 11, 51, 22, 23, 24, 18, 25, 17, 65, 71, 37, 66, 52, 72, 18, 45, 61, 46, 38, 73, 22, 23, 24, 57, 25, 58, 59, 74, 69, 22, 23, 24, 2, 25, 70, 34, -4, -4, -4, 35, 53, 54, 55, 56, 5, 6, 7, 48, 49, 50, 68, 49, 75, 78, 80, 81, 67, 63 }; static const short yycheck[] = { 31, 0, 1, 4, 3, 3, 3, 13, 18, 20, 12, 10, 11, 1, 13, 14, 27, 3, 28, 24, 12, 9, 3, 24, 8, 30, 25, 26, 27, 10, 29, 3, 30, 30, 1, 46, 67, 31, 10, 11, 26, 13, 9, 16, 25, 26, 27, 9, 29, 15, 16, 24, 4, 25, 26, 27, 1, 29, 9, 8, 5, 6, 7, 12, 20, 21, 22, 23, 5, 6, 7, 17, 18, 19, 17, 18, 3, 24, 0, 0, 49, 42 }; #define YYPURE 1 #line 2 "bison.simple" /* Skeleton output parser for bison, copyright (C) 1984 Bob Corbett and Richard Stallman NO WARRANTY BECAUSE THIS PROGRAM IS LICENSED FREE OF CHARGE, WE PROVIDE ABSOLUTELY NO WARRANTY, TO THE EXTENT PERMITTED BY APPLICABLE STATE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING, FREE SOFTWARE FOUNDATION, INC, RICHARD M. STALLMAN AND/OR OTHER PARTIES PROVIDE THIS PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW WILL RICHARD M. STALLMAN, THE FREE SOFTWARE FOUNDATION, INC., AND/OR ANY OTHER PARTY WHO MAY MODIFY AND REDISTRIBUTE THIS PROGRAM AS PERMITTED BELOW, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY LOST PROFITS, LOST MONIES, OR OTHER SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS) THIS PROGRAM, EVEN IF YOU HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. GENERAL PUBLIC LICENSE TO COPY 1. You may copy and distribute verbatim copies of this source file as you receive it, in any medium, provided that you conspicuously and appropriately publish on each copy a valid copyright notice "Copyright (C) 1985 Free Software Foundation, Inc."; and include following the copyright notice a verbatim copy of the above disclaimer of warranty and of this License. You may charge a distribution fee for the physical act of transferring a copy. 2. You may modify your copy or copies of this source file or any portion of it, and copy and distribute such modifications under the terms of Paragraph 1 above, provided that you also do the following: a) cause the modified files to carry prominent notices stating that you changed the files and the date of any change; and b) cause the whole of any work that you distribute or publish, that in whole or in part contains or is a derivative of this program or any part thereof, to be licensed at no charge to all third parties on terms identical to those contained in this License Agreement (except that you may choose to grant more extensive warranty protection to some or all third parties, at your option). c) You may charge a distribution fee for the physical act of transferring a copy, and you may at your option offer warranty protection in exchange for a fee. Mere aggregation of another unrelated program with this program (or its derivative) on a volume of a storage or distribution medium does not bring the other program under the scope of these terms. 3. You may copy and distribute this program (or a portion or derivative of it, under Paragraph 2) in object code or executable form under the terms of Paragraphs 1 and 2 above provided that you also do one of the following: a) accompany it with the complete corresponding machine-readable source code, which must be distributed under the terms of Paragraphs 1 and 2 above; or, b) accompany it with a written offer, valid for at least three years, to give any third party free (except for a nominal shipping charge) a complete machine-readable copy of the corresponding source code, to be distributed under the terms of Paragraphs 1 and 2 above; or, c) accompany it with the information you received as to where the corresponding source code may be obtained. (This alternative is allowed only for noncommercial distribution and only if you received the program in object code or executable form alone.) For an executable file, complete source code means all the source code for all modules it contains; but, as a special exception, it need not include source code for modules which are standard libraries that accompany the operating system on which the executable file runs. 4. You may not copy, sublicense, distribute or transfer this program except as expressly provided under this License Agreement. Any attempt otherwise to copy, sublicense, distribute or transfer this program is void and your rights to use the program under this License agreement shall be automatically terminated. However, parties who have received computer software programs from you with this License Agreement will not have their licenses terminated so long as such parties remain in full compliance. 5. If you wish to incorporate parts of this program into other free programs whose distribution conditions are different, write to the Free Software Foundation at 675 Mass Ave, Cambridge, MA 02139. We have not yet worked out a simple rule that can be stated here, but we will often permit this. We will be guided by the two goals of preserving the free status of all derivatives of our free software and of promoting the sharing and reuse of software. In other words, you are welcome to use, share and improve this program. You are forbidden to forbid anyone else to use, share and improve what you give them. Help stamp out software-hoarding! */ /* This is the parser code that is written into each bison parser when the %semantic_parser declaration is not specified in the grammar. It was written by Richard Stallman by simplifying the hairy parser used when %semantic_parser is specified. */ /* Note: there must be only one dollar sign in this file. It is replaced by the list of actions, each action as one case of the switch. */ #ifdef AMIGA #define bzero(b, length) memset((b),'\0',(length)) #define bcopy(b1, b2, length) memcpy((b1),(b2),(length)) #define bcmp(b1, b2, length) memcmp((b1),(b2),(length)) void memory_full () { printf ("Memory exhausted.\n"); exit(1); } char * xmalloc (size) int size; { extern char *malloc (); register char *ptr = malloc (size); if (ptr != 0) return (ptr); memory_full (); /*NOTREACHED*/ } char * xrealloc (old, size) char *old; int size; { extern char *realloc (); register char *ptr = realloc (old, size); if (ptr != 0) return (ptr); memory_full (); /*NOTREACHED*/ } char * xcalloc (number, size) int number, size; { extern char *malloc (); register int total = number * size; register char *ptr = malloc (total); if (ptr != 0) { if (total > 100) bzero (ptr, total); else { /* It's not too long, so loop, zeroing by longs. It must be safe because malloc values are always well aligned. */ register long *zp = (long *) ptr; register long *zl = (long *) (ptr + total - 4); register int i = total - 4; while (zp < zl) *zp++ = 0; if (i < 0) i = 0; while (i < total) ptr[i++] = 0; } return ptr; } memory_full (); /*NOTREACHED*/ } /* alloca -- (mostly) portable public-domain implementation -- D A Gwyn last edit: 86/05/30 rms include config.h, since on VMS it renames some symbols. Use xmalloc instead of malloc. This implementation of the PWB library alloca() function, which is used to allocate space off the run-time stack so that it is automatically reclaimed upon procedure exit, was inspired by discussions with J. Q. Johnson of Cornell. It should work under any C implementation that uses an actual procedure stack (as opposed to a linked list of frames). There are some preprocessor constants that can be defined when compiling for your specific system, for improved efficiency; however, the defaults should be okay. The general concept of this implementation is to keep track of all alloca()-allocated blocks, and reclaim any that are found to be deeper in the stack than the current invocation. This heuristic does not reclaim storage as soon as it becomes invalid, but it will do so eventually. As a special case, alloca(0) reclaims storage without allocating any. It is a good idea to use alloca(0) in your main control loop, etc. to force garbage collection. */ typedef char *pointer; /* generic pointer type */ extern void free(); extern pointer xmalloc(); /* Define STACK_DIRECTION if you know the direction of stack growth for your system; otherwise it will be automatically deduced at run-time. STACK_DIRECTION > 0 => grows toward higher addresses STACK_DIRECTION < 0 => grows toward lower addresses STACK_DIRECTION = 0 => direction of growth unknown */ #define STACK_DIRECTION -1 #define STACK_DIR STACK_DIRECTION /* known at compile-time */ /* An "alloca header" is used to: (a) chain together all alloca()ed blocks; (b) keep track of stack depth. It is very important that sizeof(header) agree with malloc() alignment chunk size. The following default should work okay. */ #ifndef ALIGN_SIZE #define ALIGN_SIZE sizeof(double) #endif typedef union hdr { char align[ALIGN_SIZE]; /* to force sizeof(header) */ struct { union hdr *next; /* for chaining headers */ char *deep; /* for stack depth measure */ } h; } header; /* alloca( size ) returns a pointer to at least `size' bytes of storage which will be automatically reclaimed upon exit from the procedure that called alloca(). Originally, this space was supposed to be taken from the current stack frame of the caller, but that method cannot be made to work for some implementations of C, for example under Gould's UTX/32. */ static header *last_alloca_header = NULL; /* -> last alloca header */ pointer alloca (size) /* returns pointer to storage */ unsigned size; /* # bytes to allocate */ { auto char probe; /* probes stack depth: */ register char *depth = &probe; /* Reclaim garbage, defined as all alloca()ed storage that was allocated from deeper in the stack than currently. */ { register header *hp; /* traverses linked list */ for (hp = last_alloca_header; hp != NULL;) if (STACK_DIR > 0 && hp->h.deep > depth || STACK_DIR < 0 && hp->h.deep < depth) { register header *np = hp->h.next; free ((pointer) hp); /* collect garbage */ hp = np; /* -> next header */ } else break; /* rest are not deeper */ last_alloca_header = hp; /* -> last valid storage */ } if (size == 0) return NULL; /* no allocation required */ /* Allocate combined header + user data storage. */ { register pointer new = xmalloc (sizeof (header) + size); /* address of header */ ((header *)new)->h.next = last_alloca_header; ((header *)new)->h.deep = depth; last_alloca_header = (header *)new; /* User storage begins just after header. */ return (pointer)((char *)new + sizeof(header)); } } #endif #define yyerrok (yyerrstatus = 0) #define yyclearin (yychar = YYEMPTY) #define YYEMPTY -2 #define YYEOF 0 #define YYFAIL goto yyerrlab; #define YYTERROR 1 #ifndef YYIMPURE #define YYLEX yylex() #endif #ifndef YYPURE #define YYLEX yylex(&yylval, &yylloc) #endif /* If nonreentrant, generate the variables here */ #ifndef YYIMPURE int yychar; /* the lookahead symbol */ YYSTYPE yylval; /* the semantic value of the */ /* lookahead symbol */ YYLTYPE yylloc; /* location data for the lookahead */ /* symbol */ int yynerr; /* number of parse errors so far */ #ifdef YYDEBUG int yydebug = 0; /* nonzero means print parse trace */ #endif #endif /* YYIMPURE */ /* YYMAXDEPTH indicates the initial size of the parser's stacks */ #ifndef YYMAXDEPTH #define YYMAXDEPTH 200 #endif /* YYMAXLIMIT is the maximum size the stacks can grow to (effective only if the built-in stack extension method is used). */ #ifndef YYMAXLIMIT #define YYMAXLIMIT 10000 #endif #line 165 "bison.simple" int yyparse() { register int yystate; register int yyn; register short *yyssp; register YYSTYPE *yyvsp; YYLTYPE *yylsp; int yyerrstatus; /* number of tokens to shift before error messages enabled */ int yychar1; /* lookahead token as an internal (translated) token number */ short yyssa[YYMAXDEPTH]; /* the state stack */ YYSTYPE yyvsa[YYMAXDEPTH]; /* the semantic value stack */ YYLTYPE yylsa[YYMAXDEPTH]; /* the location stack */ short *yyss = yyssa; /* refer to the stacks thru separate pointers */ YYSTYPE *yyvs = yyvsa; /* to allow yyoverflow to reallocate them elsewhere */ YYLTYPE *yyls = yylsa; int yymaxdepth = YYMAXDEPTH; #ifndef YYPURE int yychar; YYSTYPE yylval; YYLTYPE yylloc; #endif #ifdef YYDEBUG extern int yydebug; #endif YYSTYPE yyval; /* the variable used to return */ /* semantic values from the action */ /* routines */ int yylen; #ifdef YYDEBUG if (yydebug) fprintf(stderr, "Starting parse\n"); #endif yystate = 0; yyerrstatus = 0; yynerr = 0; yychar = YYEMPTY; /* Cause a token to be read. */ /* Initialize stack pointers. Waste one element of value and location stack so that they stay on the same level as the state stack. */ yyssp = yyss - 1; yyvsp = yyvs; yylsp = yyls; /* Push a new state, which is found in yystate . */ /* In all cases, when you get here, the value and location stacks have just been pushed. so pushing a state here evens the stacks. */ yynewstate: *++yyssp = yystate; if (yyssp >= yyss + yymaxdepth - 1) { /* Give user a chance to reallocate the stack */ /* Use copies of these so that the &'s don't force the real ones into memory. */ YYSTYPE *yyvs1 = yyvs; YYLTYPE *yyls1 = yyls; short *yyss1 = yyss; /* Get the current used size of the three stacks, in elements. */ int size = yyssp - yyss + 1; #ifdef yyoverflow /* Each stack pointer address is followed by the size of the data in use in that stack, in bytes. */ yyoverflow("parser stack overflow", &yyss1, size * sizeof (*yyssp), &yyvs1, size * sizeof (*yyvsp), &yyls1, size * sizeof (*yylsp), &yymaxdepth); yyss = yyss1; yyvs = yyvs1; yyls = yyls1; #else /* no yyoverflow */ /* Extend the stack our own way. */ if (yymaxdepth >= YYMAXLIMIT) yyerror("parser stack overflow"); yymaxdepth *= 2; if (yymaxdepth > YYMAXLIMIT) yymaxdepth = YYMAXLIMIT; yyss = (short *) alloca (yymaxdepth * sizeof (*yyssp)); bcopy ((char *)yyss1, (char *)yyss, size * sizeof (*yyssp)); yyvs = (YYSTYPE *) alloca (yymaxdepth * sizeof (*yyvsp)); bcopy ((char *)yyvs1, (char *)yyvs, size * sizeof (*yyvsp)); #ifdef YYLSP_NEEDED yyls = (YYLTYPE *) alloca (yymaxdepth * sizeof (*yylsp)); bcopy ((char *)yyls1, (char *)yyls, size * sizeof (*yylsp)); #endif #endif /* no yyoverflow */ yyssp = yyss + size - 1; yyvsp = yyvs + size - 1; #ifdef YYLSP_NEEDED yylsp = yyls + size - 1; #endif #ifdef YYDEBUG if (yydebug) fprintf(stderr, "Stack size increased to %d\n", yymaxdepth); #endif if (yyssp >= yyss + yymaxdepth - 1) YYERROR; } #ifdef YYDEBUG if (yydebug) fprintf(stderr, "Entering state %d\n", yystate); #endif /* Do appropriate processing given the current state. */ /* Read a lookahead token if we need one and don't already have one. */ yyresume: /* First try to decide what to do without reference to lookahead token. */ yyn = yypact[yystate]; if (yyn == YYFLAG) goto yydefault; /* Not known => get a lookahead token if don't already have one. */ /* yychar is either YYEMPTY or YYEOF or a valid token in external form. */ if (yychar == YYEMPTY) { #ifdef YYDEBUG if (yydebug) fprintf(stderr, "Reading a token: "); #endif yychar = YYLEX; } /* Convert token to internal form (in yychar1) for indexing tables with */ if (yychar <= 0) /* This means end of input. */ { yychar1 = 0; yychar = YYEOF; /* Don't call YYLEX any more */ #ifdef YYDEBUG if (yydebug) fprintf(stderr, "Now at end of input.\n"); #endif } else { yychar1 = YYTRANSLATE(yychar); #ifdef YYDEBUG if (yydebug) fprintf(stderr, "Next token is %d (%s)\n", yychar, yytname[yychar1]); #endif } yyn += yychar1; if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != yychar1) goto yydefault; yyn = yytable[yyn]; /* yyn is what to do for this token type in this state. Negative => reduce, -yyn is rule number. Positive => shift, yyn is new state. New state is final state => don't bother to shift, just return success. 0, or most negative number => error. */ if (yyn < 0) { if (yyn == YYFLAG) goto yyerrlab; yyn = -yyn; goto yyreduce; } else if (yyn == 0) goto yyerrlab; if (yyn == YYFINAL) YYACCEPT; /* Shift the lookahead token. */ #ifdef YYDEBUG if (yydebug) fprintf(stderr, "Shifting token %d (%s), ", yychar, yytname[yychar1]); #endif /* Discard the token being shifted unless it is eof. */ if (yychar != YYEOF) yychar = YYEMPTY; *++yyvsp = yylval; #ifdef YYLSP_NEEDED *++yylsp = yylloc; #endif /* count tokens shifted since error; after three, turn off error status. */ if (yyerrstatus) yyerrstatus--; yystate = yyn; goto yynewstate; /* Do the default action for the current state. */ yydefault: yyn = yydefact[yystate]; if (yyn == 0) goto yyerrlab; /* Do a reduction. yyn is the number of a rule to reduce with. */ yyreduce: yylen = yyr2[yyn]; yyval = yyvsp[1-yylen]; /* implement default value of the action */ #ifdef YYDEBUG if (yydebug) { if (yylen == 1) fprintf (stderr, "Reducing 1 value via line %d, ", yyrline[yyn]); else fprintf (stderr, "Reducing %d values via line %d, ", yylen, yyrline[yyn]); } #endif switch (yyn) { case 1: #line 53 "parse.y" { /* add default rule */ int def_rule; pat = cclinit(); cclnegate( pat ); def_rule = mkstate( -pat ); finish_rule( def_rule, false, 0, 0 ); for ( i = 1; i <= lastsc; ++i ) scset[i] = mkbranch( scset[i], def_rule ); if ( spprdflt ) fputs( "YY_FATAL_ERROR( \"flex scanner jammed\" )", temp_action_file ); else fputs( "ECHO", temp_action_file ); fputs( ";\n\tYY_BREAK\n", temp_action_file ); ; break;} case 2: #line 77 "parse.y" { /* initialize for processing rules */ /* create default DFA start condition */ scinstal( "INITIAL", false ); ; break;} case 5: #line 88 "parse.y" { synerr( "unknown error processing section 1" ); ; break;} case 7: #line 95 "parse.y" { /* these productions are separate from the s1object * rule because the semantics must be done before * we parse the remainder of an s1object */ xcluflg = false; ; break;} case 8: #line 105 "parse.y" { xcluflg = true; ; break;} case 9: #line 109 "parse.y" { scinstal( nmstr, xcluflg ); ; break;} case 10: #line 112 "parse.y" { scinstal( nmstr, xcluflg ); ; break;} case 11: #line 115 "parse.y" { synerr( "bad start condition list" ); ; break;} case 14: #line 123 "parse.y" { /* initialize for a parse of one rule */ trlcontxt = variable_trail_rule = varlength = false; trailcnt = headcnt = rulelen = 0; current_state_type = STATE_NORMAL; previous_continued_action = continued_action; new_rule(); ; break;} case 15: #line 134 "parse.y" { pat = yyvsp[0]; finish_rule( pat, variable_trail_rule, headcnt, trailcnt ); for ( i = 1; i <= actvp; ++i ) scbol[actvsc[i]] = mkbranch( scbol[actvsc[i]], pat ); if ( ! bol_needed ) { bol_needed = true; if ( performance_report ) pinpoint_message( "'^' operator results in sub-optimal performance" ); } ; break;} case 16: #line 154 "parse.y" { pat = yyvsp[0]; finish_rule( pat, variable_trail_rule, headcnt, trailcnt ); for ( i = 1; i <= actvp; ++i ) scset[actvsc[i]] = mkbranch( scset[actvsc[i]], pat ); ; break;} case 17: #line 165 "parse.y" { pat = yyvsp[0]; finish_rule( pat, variable_trail_rule, headcnt, trailcnt ); /* add to all non-exclusive start conditions, * including the default (0) start condition */ for ( i = 1; i <= lastsc; ++i ) if ( ! scxclu[i] ) scbol[i] = mkbranch( scbol[i], pat ); if ( ! bol_needed ) { bol_needed = true; if ( performance_report ) pinpoint_message( "'^' operator results in sub-optimal performance" ); } ; break;} case 18: #line 189 "parse.y" { pat = yyvsp[0]; finish_rule( pat, variable_trail_rule, headcnt, trailcnt ); for ( i = 1; i <= lastsc; ++i ) if ( ! scxclu[i] ) scset[i] = mkbranch( scset[i], pat ); ; break;} case 19: #line 200 "parse.y" { build_eof_action(); ; break;} case 20: #line 203 "parse.y" { /* this EOF applies to all start conditions * which don't already have EOF actions */ actvp = 0; for ( i = 1; i <= lastsc; ++i ) if ( ! sceof[i] ) actvsc[++actvp] = i; if ( actvp == 0 ) pinpoint_message( "warning - all start conditions already have <> rules" ); else build_eof_action(); ; break;} case 21: #line 222 "parse.y" { synerr( "unrecognized rule" ); ; break;} case 23: #line 229 "parse.y" { if ( (scnum = sclookup( nmstr )) == 0 ) format_pinpoint_message( "undeclared start condition %s", nmstr ); else actvsc[++actvp] = scnum; ; break;} case 24: #line 239 "parse.y" { if ( (scnum = sclookup( nmstr )) == 0 ) format_pinpoint_message( "undeclared start condition %s", nmstr ); else actvsc[actvp = 1] = scnum; ; break;} case 25: #line 248 "parse.y" { synerr( "bad start condition list" ); ; break;} case 26: #line 252 "parse.y" { if ( transchar[lastst[yyvsp[0]]] != SYM_EPSILON ) /* provide final transition \now/ so it * will be marked as a trailing context * state */ yyvsp[0] = link_machines( yyvsp[0], mkstate( SYM_EPSILON ) ); mark_beginning_as_normal( yyvsp[0] ); current_state_type = STATE_NORMAL; if ( previous_continued_action ) { /* we need to treat this as variable trailing * context so that the backup does not happen * in the action but before the action switch * statement. If the backup happens in the * action, then the rules "falling into" this * one's action will *also* do the backup, * erroneously. */ if ( ! varlength || headcnt != 0 ) { fprintf( stderr, "%s: warning - trailing context rule at line %d made variable because\n", program_name, linenum ); fprintf( stderr, " of preceding '|' action\n" ); } /* mark as variable */ varlength = true; headcnt = 0; } if ( varlength && headcnt == 0 ) { /* variable trailing context rule */ /* mark the first part of the rule as the accepting * "head" part of a trailing context rule */ /* by the way, we didn't do this at the beginning * of this production because back then * current_state_type was set up for a trail * rule, and add_accept() can create a new * state ... */ add_accept( yyvsp[-1], num_rules | YY_TRAILING_HEAD_MASK ); variable_trail_rule = true; } else trailcnt = rulelen; yyval = link_machines( yyvsp[-1], yyvsp[0] ); ; break;} case 27: #line 309 "parse.y" { synerr( "trailing context used twice" ); ; break;} case 28: #line 312 "parse.y" { if ( trlcontxt ) { synerr( "trailing context used twice" ); yyval = mkstate( SYM_EPSILON ); } else if ( previous_continued_action ) { /* see the comment in the rule for "re2 re" * above */ if ( ! varlength || headcnt != 0 ) { fprintf( stderr, "%s: warning - trailing context rule at line %d made variable because\n", program_name, linenum ); fprintf( stderr, " of preceding '|' action\n" ); } /* mark as variable */ varlength = true; headcnt = 0; } trlcontxt = true; if ( ! varlength ) headcnt = rulelen; ++rulelen; trailcnt = 1; eps = mkstate( SYM_EPSILON ); yyval = link_machines( yyvsp[-1], link_machines( eps, mkstate( '\n' ) ) ); ; break;} case 29: #line 352 "parse.y" { yyval = yyvsp[0]; if ( trlcontxt ) { if ( varlength && headcnt == 0 ) /* both head and trail are variable-length */ variable_trail_rule = true; else trailcnt = rulelen; } ; break;} case 30: #line 368 "parse.y" { varlength = true; yyval = mkor( yyvsp[-2], yyvsp[0] ); ; break;} case 31: #line 374 "parse.y" { yyval = yyvsp[0]; ; break;} case 32: #line 379 "parse.y" { /* this rule is written separately so * the reduction will occur before the trailing * series is parsed */ if ( trlcontxt ) synerr( "trailing context used twice" ); else trlcontxt = true; if ( varlength ) /* we hope the trailing context is fixed-length */ varlength = false; else headcnt = rulelen; rulelen = 0; current_state_type = STATE_TRAILING_CONTEXT; yyval = yyvsp[-1]; ; break;} case 33: #line 404 "parse.y" { /* this is where concatenation of adjacent patterns * gets done */ yyval = link_machines( yyvsp[-1], yyvsp[0] ); ; break;} case 34: #line 412 "parse.y" { yyval = yyvsp[0]; ; break;} case 35: #line 416 "parse.y" { varlength = true; yyval = mkclos( yyvsp[-1] ); ; break;} case 36: #line 423 "parse.y" { varlength = true; yyval = mkposcl( yyvsp[-1] ); ; break;} case 37: #line 430 "parse.y" { varlength = true; yyval = mkopt( yyvsp[-1] ); ; break;} case 38: #line 437 "parse.y" { varlength = true; if ( yyvsp[-3] > yyvsp[-1] || yyvsp[-3] < 0 ) { synerr( "bad iteration values" ); yyval = yyvsp[-5]; } else { if ( yyvsp[-3] == 0 ) yyval = mkopt( mkrep( yyvsp[-5], yyvsp[-3], yyvsp[-1] ) ); else yyval = mkrep( yyvsp[-5], yyvsp[-3], yyvsp[-1] ); } ; break;} case 39: #line 455 "parse.y" { varlength = true; if ( yyvsp[-2] <= 0 ) { synerr( "iteration value must be positive" ); yyval = yyvsp[-4]; } else yyval = mkrep( yyvsp[-4], yyvsp[-2], INFINITY ); ; break;} case 40: #line 469 "parse.y" { /* the singleton could be something like "(foo)", * in which case we have no idea what its length * is, so we punt here. */ varlength = true; if ( yyvsp[-1] <= 0 ) { synerr( "iteration value must be positive" ); yyval = yyvsp[-3]; } else yyval = link_machines( yyvsp[-3], copysingl( yyvsp[-3], yyvsp[-1] - 1 ) ); ; break;} case 41: #line 487 "parse.y" { if ( ! madeany ) { /* create the '.' character class */ anyccl = cclinit(); ccladd( anyccl, '\n' ); cclnegate( anyccl ); if ( useecs ) mkeccl( ccltbl + cclmap[anyccl], ccllen[anyccl], nextecm, ecgroup, csize, csize ); madeany = true; } ++rulelen; yyval = mkstate( -anyccl ); ; break;} case 42: #line 509 "parse.y" { if ( ! cclsorted ) /* sort characters for fast searching. We use a * shell sort since this list could be large. */ cshell( ccltbl + cclmap[yyvsp[0]], ccllen[yyvsp[0]], true ); if ( useecs ) mkeccl( ccltbl + cclmap[yyvsp[0]], ccllen[yyvsp[0]], nextecm, ecgroup, csize, csize ); ++rulelen; yyval = mkstate( -yyvsp[0] ); ; break;} case 43: #line 526 "parse.y" { ++rulelen; yyval = mkstate( -yyvsp[0] ); ; break;} case 44: #line 533 "parse.y" { yyval = yyvsp[-1]; ; break;} case 45: #line 536 "parse.y" { yyval = yyvsp[-1]; ; break;} case 46: #line 539 "parse.y" { ++rulelen; if ( caseins && yyvsp[0] >= 'A' && yyvsp[0] <= 'Z' ) yyvsp[0] = clower( yyvsp[0] ); yyval = mkstate( yyvsp[0] ); ; break;} case 47: #line 550 "parse.y" { yyval = yyvsp[-1]; ; break;} case 48: #line 553 "parse.y" { /* *Sigh* - to be compatible Unix lex, negated ccls * match newlines */ #ifdef NOTDEF ccladd( yyvsp[-1], '\n' ); /* negated ccls don't match '\n' */ cclsorted = false; /* because we added the newline */ #endif cclnegate( yyvsp[-1] ); yyval = yyvsp[-1]; ; break;} case 49: #line 567 "parse.y" { if ( yyvsp[-2] > yyvsp[0] ) synerr( "negative range in character class" ); else { if ( caseins ) { if ( yyvsp[-2] >= 'A' && yyvsp[-2] <= 'Z' ) yyvsp[-2] = clower( yyvsp[-2] ); if ( yyvsp[0] >= 'A' && yyvsp[0] <= 'Z' ) yyvsp[0] = clower( yyvsp[0] ); } for ( i = yyvsp[-2]; i <= yyvsp[0]; ++i ) ccladd( yyvsp[-3], i ); /* keep track if this ccl is staying in alphabetical * order */ cclsorted = cclsorted && (yyvsp[-2] > lastchar); lastchar = yyvsp[0]; } yyval = yyvsp[-3]; ; break;} case 50: #line 595 "parse.y" { if ( caseins ) if ( yyvsp[0] >= 'A' && yyvsp[0] <= 'Z' ) yyvsp[0] = clower( yyvsp[0] ); ccladd( yyvsp[-1], yyvsp[0] ); cclsorted = cclsorted && (yyvsp[0] > lastchar); lastchar = yyvsp[0]; yyval = yyvsp[-1]; ; break;} case 51: #line 607 "parse.y" { cclsorted = true; lastchar = 0; yyval = cclinit(); ; break;} case 52: #line 615 "parse.y" { if ( caseins ) if ( yyvsp[0] >= 'A' && yyvsp[0] <= 'Z' ) yyvsp[0] = clower( yyvsp[0] ); ++rulelen; yyval = link_machines( yyvsp[-1], mkstate( yyvsp[0] ) ); ; break;} case 53: #line 626 "parse.y" { yyval = mkstate( SYM_EPSILON ); ; break;} } /* the action file gets copied in in place of this dollarsign */ #line 303 "bison.simple" yyvsp -= yylen; yyssp -= yylen; #ifdef YYLSP_NEEDED yylsp -= yylen; #endif #ifdef YYDEBUG if (yydebug) { short *ssp1 = yyss - 1; fprintf (stderr, "state stack now"); while (ssp1 != yyssp) fprintf (stderr, " %d", *++ssp1); fprintf (stderr, "\n"); } #endif *++yyvsp = yyval; #ifdef YYLSP_NEEDED yylsp++; if (yylen == 0) { yylsp->first_line = yylloc.first_line; yylsp->first_column = yylloc.first_column; yylsp->last_line = (yylsp-1)->last_line; yylsp->last_column = (yylsp-1)->last_column; yylsp->text = 0; } else { yylsp->last_line = (yylsp+yylen-1)->last_line; yylsp->last_column = (yylsp+yylen-1)->last_column; } #endif /* Now "shift" the result of the reduction. Determine what state that goes to, based on the state we popped back to and the rule number reduced by. */ yyn = yyr1[yyn]; yystate = yypgoto[yyn - YYNTBASE] + *yyssp; if (yystate >= 0 && yystate <= YYLAST && yycheck[yystate] == *yyssp) yystate = yytable[yystate]; else yystate = yydefgoto[yyn - YYNTBASE]; goto yynewstate; yyerrlab: /* here on detecting error */ if (! yyerrstatus) /* If not already recovering from an error, report this error. */ { ++yynerr; yyerror("parse error"); } if (yyerrstatus == 3) { /* if just tried and failed to reuse lookahead token after an error, discard it. */ /* return failure if at end of input */ if (yychar == YYEOF) YYERROR; #ifdef YYDEBUG if (yydebug) fprintf(stderr, "Discarding token %d (%s).\n", yychar, yytname[yychar1]); #endif yychar = YYEMPTY; } /* Else will try to reuse lookahead token after shifting the error token. */ yyerrstatus = 3; /* Each real token shifted decrements this */ goto yyerrhandle; yyerrdefault: /* current state does not do anything special for the error token. */ #if 0 /* This is wrong; only states that explicitly want error tokens should shift them. */ yyn = yydefact[yystate]; /* If its default is to accept any token, ok. Otherwise pop it.*/ if (yyn) goto yydefault; #endif yyerrpop: /* pop the current state because it cannot handle the error token */ if (yyssp == yyss) YYERROR; yyvsp--; yystate = *--yyssp; #ifdef YYLSP_NEEDED yylsp--; #endif #ifdef YYDEBUG if (yydebug) { short *ssp1 = yyss - 1; fprintf (stderr, "Error: state stack now"); while (ssp1 != yyssp) fprintf (stderr, " %d", *++ssp1); fprintf (stderr, "\n"); } #endif yyerrhandle: yyn = yypact[yystate]; if (yyn == YYFLAG) goto yyerrdefault; yyn += YYTERROR; if (yyn < 0 || yyn > YYLAST || yycheck[yyn] != YYTERROR) goto yyerrdefault; yyn = yytable[yyn]; if (yyn < 0) { if (yyn == YYFLAG) goto yyerrpop; yyn = -yyn; goto yyreduce; } else if (yyn == 0) goto yyerrpop; if (yyn == YYFINAL) YYACCEPT; #ifdef YYDEBUG if (yydebug) fprintf(stderr, "Shifting error token, "); #endif *++yyvsp = yylval; #ifdef YYLSP_NEEDED *++yylsp = yylloc; #endif yystate = yyn; goto yynewstate; } #line 629 "parse.y" /* build_eof_action - build the "<>" action for the active start * conditions */ void build_eof_action() { register int i; for ( i = 1; i <= actvp; ++i ) { if ( sceof[actvsc[i]] ) format_pinpoint_message( "multiple <> rules for start condition %s", scname[actvsc[i]] ); else { sceof[actvsc[i]] = true; fprintf( temp_action_file, "case YY_STATE_EOF(%s):\n", scname[actvsc[i]] ); } } line_directive_out( temp_action_file ); } /* synerr - report a syntax error */ void synerr( str ) char str[]; { syntaxerror = true; pinpoint_message( str ); } /* format_pinpoint_message - write out a message formatted with one string, * pinpointing its location */ void format_pinpoint_message( msg, arg ) char msg[], arg[]; { char errmsg[MAXLINE]; (void) sprintf( errmsg, msg, arg ); pinpoint_message( errmsg ); } /* pinpoint_message - write out a message, pinpointing its location */ void pinpoint_message( str ) char str[]; { fprintf( stderr, "\"%s\", line %d: %s\n", infilename, linenum, str ); } /* yyerror - eat up an error message from the parser; * currently, messages are ignore */ void yyerror( msg ) char msg[]; { }