mknodes.c revision 36150
11556Srgrimes/*- 21556Srgrimes * Copyright (c) 1991, 1993 31556Srgrimes * The Regents of the University of California. All rights reserved. 41556Srgrimes * 51556Srgrimes * This code is derived from software contributed to Berkeley by 61556Srgrimes * Kenneth Almquist. 71556Srgrimes * 81556Srgrimes * Redistribution and use in source and binary forms, with or without 91556Srgrimes * modification, are permitted provided that the following conditions 101556Srgrimes * are met: 111556Srgrimes * 1. Redistributions of source code must retain the above copyright 121556Srgrimes * notice, this list of conditions and the following disclaimer. 131556Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 141556Srgrimes * notice, this list of conditions and the following disclaimer in the 151556Srgrimes * documentation and/or other materials provided with the distribution. 161556Srgrimes * 3. All advertising materials mentioning features or use of this software 171556Srgrimes * must display the following acknowledgement: 181556Srgrimes * This product includes software developed by the University of 191556Srgrimes * California, Berkeley and its contributors. 201556Srgrimes * 4. Neither the name of the University nor the names of its contributors 211556Srgrimes * may be used to endorse or promote products derived from this software 221556Srgrimes * without specific prior written permission. 231556Srgrimes * 241556Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 251556Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 261556Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 271556Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 281556Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 291556Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 301556Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 311556Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 321556Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 331556Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 341556Srgrimes * SUCH DAMAGE. 351556Srgrimes */ 361556Srgrimes 371556Srgrimes#ifndef lint 3820425Sstevestatic char const copyright[] = 391556Srgrimes"@(#) Copyright (c) 1991, 1993\n\ 401556Srgrimes The Regents of the University of California. All rights reserved.\n"; 411556Srgrimes#endif /* not lint */ 421556Srgrimes 431556Srgrimes#ifndef lint 4436150Scharnier#if 0 4536150Scharnierstatic char sccsid[] = "@(#)mknodes.c 8.2 (Berkeley) 5/4/95"; 4636150Scharnier#endif 4736150Scharnierstatic const char rcsid[] = 4836150Scharnier "$Id$"; 491556Srgrimes#endif /* not lint */ 501556Srgrimes 511556Srgrimes/* 521556Srgrimes * This program reads the nodetypes file and nodes.c.pat file. It generates 531556Srgrimes * the files nodes.h and nodes.c. 541556Srgrimes */ 551556Srgrimes 561556Srgrimes#include <stdio.h> 5717987Speter#include <stdlib.h> 5817987Speter#include <string.h> 5925226Ssteve#ifdef __STDC__ 6017987Speter#include <stdarg.h> 6117987Speter#else 6217987Speter#include <varargs.h> 6317987Speter#endif 641556Srgrimes 651556Srgrimes 661556Srgrimes#define MAXTYPES 50 /* max number of node types */ 671556Srgrimes#define MAXFIELDS 20 /* max fields in a structure */ 681556Srgrimes#define BUFLEN 100 /* size of character buffers */ 691556Srgrimes 701556Srgrimes/* field types */ 711556Srgrimes#define T_NODE 1 /* union node *field */ 721556Srgrimes#define T_NODELIST 2 /* struct nodelist *field */ 731556Srgrimes#define T_STRING 3 741556Srgrimes#define T_INT 4 /* int field */ 751556Srgrimes#define T_OTHER 5 /* other */ 761556Srgrimes#define T_TEMP 6 /* don't copy this field */ 771556Srgrimes 781556Srgrimes 791556Srgrimesstruct field { /* a structure field */ 801556Srgrimes char *name; /* name of field */ 811556Srgrimes int type; /* type of field */ 821556Srgrimes char *decl; /* declaration of field */ 831556Srgrimes}; 841556Srgrimes 851556Srgrimes 861556Srgrimesstruct str { /* struct representing a node structure */ 871556Srgrimes char *tag; /* structure tag */ 881556Srgrimes int nfields; /* number of fields in the structure */ 891556Srgrimes struct field field[MAXFIELDS]; /* the fields of the structure */ 901556Srgrimes int done; /* set if fully parsed */ 911556Srgrimes}; 921556Srgrimes 931556Srgrimes 9417987Speterstatic int ntypes; /* number of node types */ 9517987Speterstatic char *nodename[MAXTYPES]; /* names of the nodes */ 9617987Speterstatic struct str *nodestr[MAXTYPES]; /* type of structure used by the node */ 9717987Speterstatic int nstr; /* number of structures */ 9817987Speterstatic struct str str[MAXTYPES]; /* the structures */ 9917987Speterstatic struct str *curstr; /* current structure */ 10017987Speterstatic FILE *infp = stdin; 10117987Speterstatic char line[1024]; 10217987Speterstatic int linno; 10317987Speterstatic char *linep; 1041556Srgrimes 10517987Speterstatic void parsenode __P((void)); 10617987Speterstatic void parsefield __P((void)); 10717987Speterstatic void output __P((char *)); 10817987Speterstatic void outsizes __P((FILE *)); 10917987Speterstatic void outfunc __P((FILE *, int)); 11017987Speterstatic void indent __P((int, FILE *)); 11117987Speterstatic int nextfield __P((char *)); 11217987Speterstatic void skipbl __P((void)); 11317987Speterstatic int readline __P((void)); 11417987Speterstatic void error __P((const char *, ...)); 11517987Speterstatic char *savestr __P((const char *)); 1161556Srgrimes 1171556Srgrimes 11817987Speterint 1191556Srgrimesmain(argc, argv) 12017987Speter int argc; 1211556Srgrimes char **argv; 12217987Speter{ 1231556Srgrimes if (argc != 3) 12418016Speter error("usage: mknodes file"); 1251556Srgrimes if ((infp = fopen(argv[1], "r")) == NULL) 1261556Srgrimes error("Can't open %s", argv[1]); 1271556Srgrimes while (readline()) { 1281556Srgrimes if (line[0] == ' ' || line[0] == '\t') 1291556Srgrimes parsefield(); 1301556Srgrimes else if (line[0] != '\0') 1311556Srgrimes parsenode(); 1321556Srgrimes } 1331556Srgrimes output(argv[2]); 1341556Srgrimes exit(0); 1351556Srgrimes} 1361556Srgrimes 1371556Srgrimes 1381556Srgrimes 13917987Speterstatic void 14017987Speterparsenode() 14117987Speter{ 1421556Srgrimes char name[BUFLEN]; 1431556Srgrimes char tag[BUFLEN]; 1441556Srgrimes struct str *sp; 1451556Srgrimes 1461556Srgrimes if (curstr && curstr->nfields > 0) 1471556Srgrimes curstr->done = 1; 1481556Srgrimes nextfield(name); 1491556Srgrimes if (! nextfield(tag)) 1501556Srgrimes error("Tag expected"); 1511556Srgrimes if (*linep != '\0') 1521556Srgrimes error("Garbage at end of line"); 1531556Srgrimes nodename[ntypes] = savestr(name); 1541556Srgrimes for (sp = str ; sp < str + nstr ; sp++) { 15517987Speter if (strcmp(sp->tag, tag) == 0) 1561556Srgrimes break; 1571556Srgrimes } 1581556Srgrimes if (sp >= str + nstr) { 1591556Srgrimes sp->tag = savestr(tag); 1601556Srgrimes sp->nfields = 0; 1611556Srgrimes curstr = sp; 1621556Srgrimes nstr++; 1631556Srgrimes } 1641556Srgrimes nodestr[ntypes] = sp; 1651556Srgrimes ntypes++; 1661556Srgrimes} 1671556Srgrimes 1681556Srgrimes 16917987Speterstatic void 17017987Speterparsefield() 17117987Speter{ 1721556Srgrimes char name[BUFLEN]; 1731556Srgrimes char type[BUFLEN]; 1741556Srgrimes char decl[2 * BUFLEN]; 1751556Srgrimes struct field *fp; 1761556Srgrimes 1771556Srgrimes if (curstr == NULL || curstr->done) 1781556Srgrimes error("No current structure to add field to"); 1791556Srgrimes if (! nextfield(name)) 1801556Srgrimes error("No field name"); 1811556Srgrimes if (! nextfield(type)) 1821556Srgrimes error("No field type"); 1831556Srgrimes fp = &curstr->field[curstr->nfields]; 1841556Srgrimes fp->name = savestr(name); 18517987Speter if (strcmp(type, "nodeptr") == 0) { 1861556Srgrimes fp->type = T_NODE; 1871556Srgrimes sprintf(decl, "union node *%s", name); 18817987Speter } else if (strcmp(type, "nodelist") == 0) { 1891556Srgrimes fp->type = T_NODELIST; 1901556Srgrimes sprintf(decl, "struct nodelist *%s", name); 19117987Speter } else if (strcmp(type, "string") == 0) { 1921556Srgrimes fp->type = T_STRING; 1931556Srgrimes sprintf(decl, "char *%s", name); 19417987Speter } else if (strcmp(type, "int") == 0) { 1951556Srgrimes fp->type = T_INT; 1961556Srgrimes sprintf(decl, "int %s", name); 19717987Speter } else if (strcmp(type, "other") == 0) { 1981556Srgrimes fp->type = T_OTHER; 19917987Speter } else if (strcmp(type, "temp") == 0) { 2001556Srgrimes fp->type = T_TEMP; 2011556Srgrimes } else { 2021556Srgrimes error("Unknown type %s", type); 2031556Srgrimes } 2041556Srgrimes if (fp->type == T_OTHER || fp->type == T_TEMP) { 2051556Srgrimes skipbl(); 2061556Srgrimes fp->decl = savestr(linep); 2071556Srgrimes } else { 2081556Srgrimes if (*linep) 2091556Srgrimes error("Garbage at end of line"); 2101556Srgrimes fp->decl = savestr(decl); 2111556Srgrimes } 2121556Srgrimes curstr->nfields++; 2131556Srgrimes} 2141556Srgrimes 2151556Srgrimes 2161556Srgrimeschar writer[] = "\ 2171556Srgrimes/*\n\ 2181556Srgrimes * This file was generated by the mknodes program.\n\ 2191556Srgrimes */\n\ 2201556Srgrimes\n"; 2211556Srgrimes 22217987Speterstatic void 2231556Srgrimesoutput(file) 2241556Srgrimes char *file; 22517987Speter{ 2261556Srgrimes FILE *hfile; 2271556Srgrimes FILE *cfile; 2281556Srgrimes FILE *patfile; 2291556Srgrimes int i; 2301556Srgrimes struct str *sp; 2311556Srgrimes struct field *fp; 2321556Srgrimes char *p; 2331556Srgrimes 2341556Srgrimes if ((patfile = fopen(file, "r")) == NULL) 2351556Srgrimes error("Can't open %s", file); 2361556Srgrimes if ((hfile = fopen("nodes.h", "w")) == NULL) 2371556Srgrimes error("Can't create nodes.h"); 2381556Srgrimes if ((cfile = fopen("nodes.c", "w")) == NULL) 2391556Srgrimes error("Can't create nodes.c"); 2401556Srgrimes fputs(writer, hfile); 2411556Srgrimes for (i = 0 ; i < ntypes ; i++) 2421556Srgrimes fprintf(hfile, "#define %s %d\n", nodename[i], i); 2431556Srgrimes fputs("\n\n\n", hfile); 2441556Srgrimes for (sp = str ; sp < &str[nstr] ; sp++) { 2451556Srgrimes fprintf(hfile, "struct %s {\n", sp->tag); 2461556Srgrimes for (i = sp->nfields, fp = sp->field ; --i >= 0 ; fp++) { 2471556Srgrimes fprintf(hfile, " %s;\n", fp->decl); 2481556Srgrimes } 2491556Srgrimes fputs("};\n\n\n", hfile); 2501556Srgrimes } 2511556Srgrimes fputs("union node {\n", hfile); 2521556Srgrimes fprintf(hfile, " int type;\n"); 2531556Srgrimes for (sp = str ; sp < &str[nstr] ; sp++) { 2541556Srgrimes fprintf(hfile, " struct %s %s;\n", sp->tag, sp->tag); 2551556Srgrimes } 2561556Srgrimes fputs("};\n\n\n", hfile); 2571556Srgrimes fputs("struct nodelist {\n", hfile); 2581556Srgrimes fputs("\tstruct nodelist *next;\n", hfile); 2591556Srgrimes fputs("\tunion node *n;\n", hfile); 2601556Srgrimes fputs("};\n\n\n", hfile); 2611556Srgrimes fputs("#ifdef __STDC__\n", hfile); 2621556Srgrimes fputs("union node *copyfunc(union node *);\n", hfile); 2631556Srgrimes fputs("void freefunc(union node *);\n", hfile); 2641556Srgrimes fputs("#else\n", hfile); 2651556Srgrimes fputs("union node *copyfunc();\n", hfile); 2661556Srgrimes fputs("void freefunc();\n", hfile); 2671556Srgrimes fputs("#endif\n", hfile); 2681556Srgrimes 2691556Srgrimes fputs(writer, cfile); 2701556Srgrimes while (fgets(line, sizeof line, patfile) != NULL) { 2711556Srgrimes for (p = line ; *p == ' ' || *p == '\t' ; p++); 27217987Speter if (strcmp(p, "%SIZES\n") == 0) 2731556Srgrimes outsizes(cfile); 27417987Speter else if (strcmp(p, "%CALCSIZE\n") == 0) 2751556Srgrimes outfunc(cfile, 1); 27617987Speter else if (strcmp(p, "%COPY\n") == 0) 2771556Srgrimes outfunc(cfile, 0); 2781556Srgrimes else 2791556Srgrimes fputs(line, cfile); 2801556Srgrimes } 2811556Srgrimes} 2821556Srgrimes 2831556Srgrimes 2841556Srgrimes 28517987Speterstatic void 2861556Srgrimesoutsizes(cfile) 2871556Srgrimes FILE *cfile; 28817987Speter{ 2891556Srgrimes int i; 2901556Srgrimes 2911556Srgrimes fprintf(cfile, "static const short nodesize[%d] = {\n", ntypes); 2921556Srgrimes for (i = 0 ; i < ntypes ; i++) { 2931556Srgrimes fprintf(cfile, " ALIGN(sizeof (struct %s)),\n", nodestr[i]->tag); 2941556Srgrimes } 2951556Srgrimes fprintf(cfile, "};\n"); 2961556Srgrimes} 2971556Srgrimes 2981556Srgrimes 29917987Speterstatic void 3001556Srgrimesoutfunc(cfile, calcsize) 3011556Srgrimes FILE *cfile; 30217987Speter int calcsize; 30317987Speter{ 3041556Srgrimes struct str *sp; 3051556Srgrimes struct field *fp; 3061556Srgrimes int i; 3071556Srgrimes 3081556Srgrimes fputs(" if (n == NULL)\n", cfile); 3091556Srgrimes if (calcsize) 3101556Srgrimes fputs(" return;\n", cfile); 3111556Srgrimes else 3121556Srgrimes fputs(" return NULL;\n", cfile); 3131556Srgrimes if (calcsize) 3141556Srgrimes fputs(" funcblocksize += nodesize[n->type];\n", cfile); 3151556Srgrimes else { 3161556Srgrimes fputs(" new = funcblock;\n", cfile); 31725226Ssteve fputs(" funcblock = (char *)funcblock + nodesize[n->type];\n", cfile); 3181556Srgrimes } 3191556Srgrimes fputs(" switch (n->type) {\n", cfile); 3201556Srgrimes for (sp = str ; sp < &str[nstr] ; sp++) { 3211556Srgrimes for (i = 0 ; i < ntypes ; i++) { 3221556Srgrimes if (nodestr[i] == sp) 3231556Srgrimes fprintf(cfile, " case %s:\n", nodename[i]); 3241556Srgrimes } 3251556Srgrimes for (i = sp->nfields ; --i >= 1 ; ) { 3261556Srgrimes fp = &sp->field[i]; 3271556Srgrimes switch (fp->type) { 3281556Srgrimes case T_NODE: 3291556Srgrimes if (calcsize) { 3301556Srgrimes indent(12, cfile); 3311556Srgrimes fprintf(cfile, "calcsize(n->%s.%s);\n", 3321556Srgrimes sp->tag, fp->name); 3331556Srgrimes } else { 3341556Srgrimes indent(12, cfile); 3351556Srgrimes fprintf(cfile, "new->%s.%s = copynode(n->%s.%s);\n", 3361556Srgrimes sp->tag, fp->name, sp->tag, fp->name); 3371556Srgrimes } 3381556Srgrimes break; 3391556Srgrimes case T_NODELIST: 3401556Srgrimes if (calcsize) { 3411556Srgrimes indent(12, cfile); 3421556Srgrimes fprintf(cfile, "sizenodelist(n->%s.%s);\n", 3431556Srgrimes sp->tag, fp->name); 3441556Srgrimes } else { 3451556Srgrimes indent(12, cfile); 3461556Srgrimes fprintf(cfile, "new->%s.%s = copynodelist(n->%s.%s);\n", 3471556Srgrimes sp->tag, fp->name, sp->tag, fp->name); 3481556Srgrimes } 3491556Srgrimes break; 3501556Srgrimes case T_STRING: 3511556Srgrimes if (calcsize) { 3521556Srgrimes indent(12, cfile); 3531556Srgrimes fprintf(cfile, "funcstringsize += strlen(n->%s.%s) + 1;\n", 3541556Srgrimes sp->tag, fp->name); 3551556Srgrimes } else { 3561556Srgrimes indent(12, cfile); 3571556Srgrimes fprintf(cfile, "new->%s.%s = nodesavestr(n->%s.%s);\n", 3581556Srgrimes sp->tag, fp->name, sp->tag, fp->name); 3591556Srgrimes } 3601556Srgrimes break; 3611556Srgrimes case T_INT: 3621556Srgrimes case T_OTHER: 3631556Srgrimes if (! calcsize) { 3641556Srgrimes indent(12, cfile); 3651556Srgrimes fprintf(cfile, "new->%s.%s = n->%s.%s;\n", 3661556Srgrimes sp->tag, fp->name, sp->tag, fp->name); 3671556Srgrimes } 3681556Srgrimes break; 3691556Srgrimes } 3701556Srgrimes } 3711556Srgrimes indent(12, cfile); 3721556Srgrimes fputs("break;\n", cfile); 3731556Srgrimes } 3741556Srgrimes fputs(" };\n", cfile); 3751556Srgrimes if (! calcsize) 3761556Srgrimes fputs(" new->type = n->type;\n", cfile); 3771556Srgrimes} 3781556Srgrimes 3791556Srgrimes 38017987Speterstatic void 3811556Srgrimesindent(amount, fp) 38217987Speter int amount; 3831556Srgrimes FILE *fp; 38417987Speter{ 3851556Srgrimes while (amount >= 8) { 3861556Srgrimes putc('\t', fp); 3871556Srgrimes amount -= 8; 3881556Srgrimes } 3891556Srgrimes while (--amount >= 0) { 3901556Srgrimes putc(' ', fp); 3911556Srgrimes } 3921556Srgrimes} 3931556Srgrimes 3941556Srgrimes 39517987Speterstatic int 3961556Srgrimesnextfield(buf) 3971556Srgrimes char *buf; 39817987Speter{ 39925226Ssteve char *p, *q; 4001556Srgrimes 4011556Srgrimes p = linep; 4021556Srgrimes while (*p == ' ' || *p == '\t') 4031556Srgrimes p++; 4041556Srgrimes q = buf; 4051556Srgrimes while (*p != ' ' && *p != '\t' && *p != '\0') 4061556Srgrimes *q++ = *p++; 4071556Srgrimes *q = '\0'; 4081556Srgrimes linep = p; 4091556Srgrimes return (q > buf); 4101556Srgrimes} 4111556Srgrimes 4121556Srgrimes 41317987Speterstatic void 41417987Speterskipbl() 41517987Speter{ 4161556Srgrimes while (*linep == ' ' || *linep == '\t') 4171556Srgrimes linep++; 4181556Srgrimes} 4191556Srgrimes 4201556Srgrimes 42117987Speterstatic int 42217987Speterreadline() 42317987Speter{ 42425226Ssteve char *p; 4251556Srgrimes 4261556Srgrimes if (fgets(line, 1024, infp) == NULL) 4271556Srgrimes return 0; 4281556Srgrimes for (p = line ; *p != '#' && *p != '\n' && *p != '\0' ; p++); 4291556Srgrimes while (p > line && (p[-1] == ' ' || p[-1] == '\t')) 4301556Srgrimes p--; 4311556Srgrimes *p = '\0'; 4321556Srgrimes linep = line; 4331556Srgrimes linno++; 4341556Srgrimes if (p - line > BUFLEN) 4351556Srgrimes error("Line too long"); 4361556Srgrimes return 1; 4371556Srgrimes} 4381556Srgrimes 4391556Srgrimes 4401556Srgrimes 44117987Speterstatic void 44225226Ssteve#ifdef __STDC__ 44317987Spetererror(const char *msg, ...) 44417987Speter#else 44517987Spetererror(va_alist) 44617987Speter va_dcl 44717987Speter#endif 44817987Speter{ 44917987Speter va_list va; 45025226Ssteve#ifdef __STDC__ 45117987Speter va_start(va, msg); 45217987Speter#else 4531556Srgrimes char *msg; 45417987Speter va_start(va); 45517987Speter msg = va_arg(va, char *); 45617987Speter#endif 45717987Speter 45817987Speter (void) fprintf(stderr, "line %d: ", linno); 45917987Speter (void) vfprintf(stderr, msg, va); 46017987Speter (void) fputc('\n', stderr); 46117987Speter 46217987Speter va_end(va); 46317987Speter 4641556Srgrimes exit(2); 4651556Srgrimes} 4661556Srgrimes 4671556Srgrimes 4681556Srgrimes 46917987Speterstatic char * 4701556Srgrimessavestr(s) 47117987Speter const char *s; 47217987Speter{ 47325226Ssteve char *p; 4741556Srgrimes 4751556Srgrimes if ((p = malloc(strlen(s) + 1)) == NULL) 4761556Srgrimes error("Out of space"); 47717987Speter (void) strcpy(p, s); 4781556Srgrimes return p; 4791556Srgrimes} 480