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-rw-r--r--bin/sh/mknodes.c431
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diff --git a/bin/sh/mknodes.c b/bin/sh/mknodes.c
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+/*-
+ * Copyright (c) 1991, 1993
+ * 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
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)mknodes.c 8.1 (Berkeley) 5/31/93";
+#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]);
+ exit(0);
+}
+
+
+
+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;
+}
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