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- /*-
- * Copyright (c) 1991 The Regents of the University of California.
- * All rights reserved.
- *
- * This code is derived from software contributed to Berkeley by
- * Kenneth Almquist.
- *
- * 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.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by the University of
- * California, Berkeley and its contributors.
- * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
- #ifndef lint
- char copyright[] =
- "@(#) Copyright (c) 1991 The Regents of the University of California.\n\
- All rights reserved.\n";
- #endif /* not lint */
-
- #ifndef lint
- static char sccsid[] = "@(#)mknodes.c 5.1 (Berkeley) 3/7/91";
- #endif /* not lint */
-
- /*
- * This program reads the nodetypes file and nodes.c.pat file. It generates
- * the files nodes.h and nodes.c.
- */
-
- #include <stdio.h>
-
-
- #define MAXTYPES 50 /* max number of node types */
- #define MAXFIELDS 20 /* max fields in a structure */
- #define BUFLEN 100 /* size of character buffers */
-
- /* field types */
- #define T_NODE 1 /* union node *field */
- #define T_NODELIST 2 /* struct nodelist *field */
- #define T_STRING 3
- #define T_INT 4 /* int field */
- #define T_OTHER 5 /* other */
- #define T_TEMP 6 /* don't copy this field */
-
-
- struct field { /* a structure field */
- char *name; /* name of field */
- int type; /* type of field */
- char *decl; /* declaration of field */
- };
-
-
- struct str { /* struct representing a node structure */
- char *tag; /* structure tag */
- int nfields; /* number of fields in the structure */
- struct field field[MAXFIELDS]; /* the fields of the structure */
- int done; /* set if fully parsed */
- };
-
-
- int ntypes; /* number of node types */
- char *nodename[MAXTYPES]; /* names of the nodes */
- struct str *nodestr[MAXTYPES]; /* type of structure used by the node */
- int nstr; /* number of structures */
- struct str str[MAXTYPES]; /* the structures */
- struct str *curstr; /* current structure */
-
-
- FILE *infp = stdin;
- char line[1024];
- int linno;
- char *linep;
-
-
- char *savestr();
- #define equal(s1, s2) (strcmp(s1, s2) == 0)
-
-
- main(argc, argv)
- char **argv;
- {
- if (argc != 3)
- error("usage: mknodes file\n");
- if ((infp = fopen(argv[1], "r")) == NULL)
- error("Can't open %s", argv[1]);
- while (readline()) {
- if (line[0] == ' ' || line[0] == '\t')
- parsefield();
- else if (line[0] != '\0')
- parsenode();
- }
- output(argv[2]);
- }
-
-
-
- parsenode() {
- char name[BUFLEN];
- char tag[BUFLEN];
- struct str *sp;
-
- if (curstr && curstr->nfields > 0)
- curstr->done = 1;
- nextfield(name);
- if (! nextfield(tag))
- error("Tag expected");
- if (*linep != '\0')
- error("Garbage at end of line");
- nodename[ntypes] = savestr(name);
- for (sp = str ; sp < str + nstr ; sp++) {
- if (equal(sp->tag, tag))
- break;
- }
- if (sp >= str + nstr) {
- sp->tag = savestr(tag);
- sp->nfields = 0;
- curstr = sp;
- nstr++;
- }
- nodestr[ntypes] = sp;
- ntypes++;
- }
-
-
- parsefield() {
- char name[BUFLEN];
- char type[BUFLEN];
- char decl[2 * BUFLEN];
- struct field *fp;
-
- if (curstr == NULL || curstr->done)
- error("No current structure to add field to");
- if (! nextfield(name))
- error("No field name");
- if (! nextfield(type))
- error("No field type");
- fp = &curstr->field[curstr->nfields];
- fp->name = savestr(name);
- if (equal(type, "nodeptr")) {
- fp->type = T_NODE;
- sprintf(decl, "union node *%s", name);
- } else if (equal(type, "nodelist")) {
- fp->type = T_NODELIST;
- sprintf(decl, "struct nodelist *%s", name);
- } else if (equal(type, "string")) {
- fp->type = T_STRING;
- sprintf(decl, "char *%s", name);
- } else if (equal(type, "int")) {
- fp->type = T_INT;
- sprintf(decl, "int %s", name);
- } else if (equal(type, "other")) {
- fp->type = T_OTHER;
- } else if (equal(type, "temp")) {
- fp->type = T_TEMP;
- } else {
- error("Unknown type %s", type);
- }
- if (fp->type == T_OTHER || fp->type == T_TEMP) {
- skipbl();
- fp->decl = savestr(linep);
- } else {
- if (*linep)
- error("Garbage at end of line");
- fp->decl = savestr(decl);
- }
- curstr->nfields++;
- }
-
-
- char writer[] = "\
- /*\n\
- * This file was generated by the mknodes program.\n\
- */\n\
- \n";
-
- output(file)
- char *file;
- {
- FILE *hfile;
- FILE *cfile;
- FILE *patfile;
- int i;
- struct str *sp;
- struct field *fp;
- char *p;
-
- if ((patfile = fopen(file, "r")) == NULL)
- error("Can't open %s", file);
- if ((hfile = fopen("nodes.h", "w")) == NULL)
- error("Can't create nodes.h");
- if ((cfile = fopen("nodes.c", "w")) == NULL)
- error("Can't create nodes.c");
- fputs(writer, hfile);
- for (i = 0 ; i < ntypes ; i++)
- fprintf(hfile, "#define %s %d\n", nodename[i], i);
- fputs("\n\n\n", hfile);
- for (sp = str ; sp < &str[nstr] ; sp++) {
- fprintf(hfile, "struct %s {\n", sp->tag);
- for (i = sp->nfields, fp = sp->field ; --i >= 0 ; fp++) {
- fprintf(hfile, " %s;\n", fp->decl);
- }
- fputs("};\n\n\n", hfile);
- }
- fputs("union node {\n", hfile);
- fprintf(hfile, " int type;\n");
- for (sp = str ; sp < &str[nstr] ; sp++) {
- fprintf(hfile, " struct %s %s;\n", sp->tag, sp->tag);
- }
- fputs("};\n\n\n", hfile);
- fputs("struct nodelist {\n", hfile);
- fputs("\tstruct nodelist *next;\n", hfile);
- fputs("\tunion node *n;\n", hfile);
- fputs("};\n\n\n", hfile);
- fputs("#ifdef __STDC__\n", hfile);
- fputs("union node *copyfunc(union node *);\n", hfile);
- fputs("void freefunc(union node *);\n", hfile);
- fputs("#else\n", hfile);
- fputs("union node *copyfunc();\n", hfile);
- fputs("void freefunc();\n", hfile);
- fputs("#endif\n", hfile);
-
- fputs(writer, cfile);
- while (fgets(line, sizeof line, patfile) != NULL) {
- for (p = line ; *p == ' ' || *p == '\t' ; p++);
- if (equal(p, "%SIZES\n"))
- outsizes(cfile);
- else if (equal(p, "%CALCSIZE\n"))
- outfunc(cfile, 1);
- else if (equal(p, "%COPY\n"))
- outfunc(cfile, 0);
- else
- fputs(line, cfile);
- }
- }
-
-
-
- outsizes(cfile)
- FILE *cfile;
- {
- int i;
-
- fprintf(cfile, "static const short nodesize[%d] = {\n", ntypes);
- for (i = 0 ; i < ntypes ; i++) {
- fprintf(cfile, " ALIGN(sizeof (struct %s)),\n", nodestr[i]->tag);
- }
- fprintf(cfile, "};\n");
- }
-
-
- outfunc(cfile, calcsize)
- FILE *cfile;
- {
- struct str *sp;
- struct field *fp;
- int i;
-
- fputs(" if (n == NULL)\n", cfile);
- if (calcsize)
- fputs(" return;\n", cfile);
- else
- fputs(" return NULL;\n", cfile);
- if (calcsize)
- fputs(" funcblocksize += nodesize[n->type];\n", cfile);
- else {
- fputs(" new = funcblock;\n", cfile);
- fputs(" funcblock += nodesize[n->type];\n", cfile);
- }
- fputs(" switch (n->type) {\n", cfile);
- for (sp = str ; sp < &str[nstr] ; sp++) {
- for (i = 0 ; i < ntypes ; i++) {
- if (nodestr[i] == sp)
- fprintf(cfile, " case %s:\n", nodename[i]);
- }
- for (i = sp->nfields ; --i >= 1 ; ) {
- fp = &sp->field[i];
- switch (fp->type) {
- case T_NODE:
- if (calcsize) {
- indent(12, cfile);
- fprintf(cfile, "calcsize(n->%s.%s);\n",
- sp->tag, fp->name);
- } else {
- indent(12, cfile);
- fprintf(cfile, "new->%s.%s = copynode(n->%s.%s);\n",
- sp->tag, fp->name, sp->tag, fp->name);
- }
- break;
- case T_NODELIST:
- if (calcsize) {
- indent(12, cfile);
- fprintf(cfile, "sizenodelist(n->%s.%s);\n",
- sp->tag, fp->name);
- } else {
- indent(12, cfile);
- fprintf(cfile, "new->%s.%s = copynodelist(n->%s.%s);\n",
- sp->tag, fp->name, sp->tag, fp->name);
- }
- break;
- case T_STRING:
- if (calcsize) {
- indent(12, cfile);
- fprintf(cfile, "funcstringsize += strlen(n->%s.%s) + 1;\n",
- sp->tag, fp->name);
- } else {
- indent(12, cfile);
- fprintf(cfile, "new->%s.%s = nodesavestr(n->%s.%s);\n",
- sp->tag, fp->name, sp->tag, fp->name);
- }
- break;
- case T_INT:
- case T_OTHER:
- if (! calcsize) {
- indent(12, cfile);
- fprintf(cfile, "new->%s.%s = n->%s.%s;\n",
- sp->tag, fp->name, sp->tag, fp->name);
- }
- break;
- }
- }
- indent(12, cfile);
- fputs("break;\n", cfile);
- }
- fputs(" };\n", cfile);
- if (! calcsize)
- fputs(" new->type = n->type;\n", cfile);
- }
-
-
- indent(amount, fp)
- FILE *fp;
- {
- while (amount >= 8) {
- putc('\t', fp);
- amount -= 8;
- }
- while (--amount >= 0) {
- putc(' ', fp);
- }
- }
-
-
- int
- nextfield(buf)
- char *buf;
- {
- register char *p, *q;
-
- p = linep;
- while (*p == ' ' || *p == '\t')
- p++;
- q = buf;
- while (*p != ' ' && *p != '\t' && *p != '\0')
- *q++ = *p++;
- *q = '\0';
- linep = p;
- return (q > buf);
- }
-
-
- skipbl() {
- while (*linep == ' ' || *linep == '\t')
- linep++;
- }
-
-
- int
- readline() {
- register char *p;
-
- if (fgets(line, 1024, infp) == NULL)
- return 0;
- for (p = line ; *p != '#' && *p != '\n' && *p != '\0' ; p++);
- while (p > line && (p[-1] == ' ' || p[-1] == '\t'))
- p--;
- *p = '\0';
- linep = line;
- linno++;
- if (p - line > BUFLEN)
- error("Line too long");
- return 1;
- }
-
-
-
- error(msg, a1, a2, a3, a4, a5, a6)
- char *msg;
- {
- fprintf(stderr, "line %d: ", linno);
- fprintf(stderr, msg, a1, a2, a3, a4, a5, a6);
- putc('\n', stderr);
- exit(2);
- }
-
-
-
- char *
- savestr(s)
- char *s;
- {
- register char *p;
- char *malloc();
-
- if ((p = malloc(strlen(s) + 1)) == NULL)
- error("Out of space");
- strcpy(p, s);
- return p;
- }
-