450 lines
11 KiB
C
450 lines
11 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Kenneth Almquist.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#if 0
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#ifndef lint
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static char const copyright[] =
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"@(#) Copyright (c) 1991, 1993\n\
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The Regents of the University of California. All rights reserved.\n";
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#endif /* not lint */
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#ifndef lint
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static char sccsid[] = "@(#)mknodes.c 8.2 (Berkeley) 5/4/95";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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/*
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* This program reads the nodetypes file and nodes.c.pat file. It generates
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* the files nodes.h and nodes.c.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <stdarg.h>
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#define MAXTYPES 50 /* max number of node types */
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#define MAXFIELDS 20 /* max fields in a structure */
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#define BUFLEN 100 /* size of character buffers */
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/* field types */
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#define T_NODE 1 /* union node *field */
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#define T_NODELIST 2 /* struct nodelist *field */
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#define T_STRING 3
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#define T_INT 4 /* int field */
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#define T_OTHER 5 /* other */
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#define T_TEMP 6 /* don't copy this field */
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struct field { /* a structure field */
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char *name; /* name of field */
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int type; /* type of field */
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char *decl; /* declaration of field */
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};
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struct str { /* struct representing a node structure */
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char *tag; /* structure tag */
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int nfields; /* number of fields in the structure */
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struct field field[MAXFIELDS]; /* the fields of the structure */
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int done; /* set if fully parsed */
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};
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static int ntypes; /* number of node types */
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static char *nodename[MAXTYPES]; /* names of the nodes */
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static struct str *nodestr[MAXTYPES]; /* type of structure used by the node */
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static int nstr; /* number of structures */
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static struct str str[MAXTYPES]; /* the structures */
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static struct str *curstr; /* current structure */
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static FILE *infp;
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static char line[1024];
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static int linno;
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static char *linep;
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static void parsenode(void);
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static void parsefield(void);
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static void output(char *);
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static void outsizes(FILE *);
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static void outfunc(FILE *, int);
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static void indent(int, FILE *);
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static int nextfield(char *);
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static void skipbl(void);
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static int readline(void);
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static void error(const char *, ...) __printf0like(1, 2) __dead2;
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static char *savestr(const char *);
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int
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main(int argc, char *argv[])
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{
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if (argc != 3)
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error("usage: mknodes file");
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infp = stdin;
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if ((infp = fopen(argv[1], "r")) == NULL)
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error("Can't open %s: %s", argv[1], strerror(errno));
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while (readline()) {
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if (line[0] == ' ' || line[0] == '\t')
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parsefield();
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else if (line[0] != '\0')
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parsenode();
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}
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output(argv[2]);
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exit(0);
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}
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static void
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parsenode(void)
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{
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char name[BUFLEN];
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char tag[BUFLEN];
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struct str *sp;
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if (curstr && curstr->nfields > 0)
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curstr->done = 1;
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nextfield(name);
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if (! nextfield(tag))
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error("Tag expected");
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if (*linep != '\0')
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error("Garbage at end of line");
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nodename[ntypes] = savestr(name);
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for (sp = str ; sp < str + nstr ; sp++) {
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if (strcmp(sp->tag, tag) == 0)
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break;
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}
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if (sp >= str + nstr) {
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sp->tag = savestr(tag);
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sp->nfields = 0;
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curstr = sp;
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nstr++;
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}
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nodestr[ntypes] = sp;
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ntypes++;
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}
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static void
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parsefield(void)
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{
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char name[BUFLEN];
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char type[BUFLEN];
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char decl[2 * BUFLEN];
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struct field *fp;
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if (curstr == NULL || curstr->done)
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error("No current structure to add field to");
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if (! nextfield(name))
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error("No field name");
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if (! nextfield(type))
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error("No field type");
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fp = &curstr->field[curstr->nfields];
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fp->name = savestr(name);
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if (strcmp(type, "nodeptr") == 0) {
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fp->type = T_NODE;
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sprintf(decl, "union node *%s", name);
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} else if (strcmp(type, "nodelist") == 0) {
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fp->type = T_NODELIST;
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sprintf(decl, "struct nodelist *%s", name);
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} else if (strcmp(type, "string") == 0) {
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fp->type = T_STRING;
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sprintf(decl, "char *%s", name);
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} else if (strcmp(type, "int") == 0) {
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fp->type = T_INT;
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sprintf(decl, "int %s", name);
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} else if (strcmp(type, "other") == 0) {
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fp->type = T_OTHER;
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} else if (strcmp(type, "temp") == 0) {
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fp->type = T_TEMP;
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} else {
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error("Unknown type %s", type);
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}
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if (fp->type == T_OTHER || fp->type == T_TEMP) {
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skipbl();
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fp->decl = savestr(linep);
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} else {
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if (*linep)
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error("Garbage at end of line");
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fp->decl = savestr(decl);
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}
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curstr->nfields++;
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}
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static const char writer[] = "\
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/*\n\
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* This file was generated by the mknodes program.\n\
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*/\n\
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\n";
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static void
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output(char *file)
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{
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FILE *hfile;
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FILE *cfile;
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FILE *patfile;
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int i;
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struct str *sp;
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struct field *fp;
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char *p;
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if ((patfile = fopen(file, "r")) == NULL)
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error("Can't open %s: %s", file, strerror(errno));
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if ((hfile = fopen("nodes.h", "w")) == NULL)
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error("Can't create nodes.h: %s", strerror(errno));
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if ((cfile = fopen("nodes.c", "w")) == NULL)
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error("Can't create nodes.c");
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fputs(writer, hfile);
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for (i = 0 ; i < ntypes ; i++)
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fprintf(hfile, "#define %s %d\n", nodename[i], i);
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fputs("\n\n\n", hfile);
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for (sp = str ; sp < &str[nstr] ; sp++) {
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fprintf(hfile, "struct %s {\n", sp->tag);
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for (i = sp->nfields, fp = sp->field ; --i >= 0 ; fp++) {
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fprintf(hfile, " %s;\n", fp->decl);
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}
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fputs("};\n\n\n", hfile);
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}
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fputs("union node {\n", hfile);
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fprintf(hfile, " int type;\n");
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for (sp = str ; sp < &str[nstr] ; sp++) {
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fprintf(hfile, " struct %s %s;\n", sp->tag, sp->tag);
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}
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fputs("};\n\n\n", hfile);
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fputs("struct nodelist {\n", hfile);
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fputs("\tstruct nodelist *next;\n", hfile);
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fputs("\tunion node *n;\n", hfile);
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fputs("};\n\n\n", hfile);
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fputs("struct funcdef;\n", hfile);
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fputs("struct funcdef *copyfunc(union node *);\n", hfile);
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fputs("union node *getfuncnode(struct funcdef *);\n", hfile);
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fputs("void reffunc(struct funcdef *);\n", hfile);
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fputs("void unreffunc(struct funcdef *);\n", hfile);
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fputs(writer, cfile);
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while (fgets(line, sizeof line, patfile) != NULL) {
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for (p = line ; *p == ' ' || *p == '\t' ; p++);
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if (strcmp(p, "%SIZES\n") == 0)
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outsizes(cfile);
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else if (strcmp(p, "%CALCSIZE\n") == 0)
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outfunc(cfile, 1);
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else if (strcmp(p, "%COPY\n") == 0)
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outfunc(cfile, 0);
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else
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fputs(line, cfile);
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}
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}
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static void
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outsizes(FILE *cfile)
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{
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int i;
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fprintf(cfile, "static const short nodesize[%d] = {\n", ntypes);
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for (i = 0 ; i < ntypes ; i++) {
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fprintf(cfile, " ALIGN(sizeof (struct %s)),\n", nodestr[i]->tag);
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}
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fprintf(cfile, "};\n");
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}
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static void
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outfunc(FILE *cfile, int calcsize)
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{
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struct str *sp;
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struct field *fp;
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int i;
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fputs(" if (n == NULL)\n", cfile);
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if (calcsize)
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fputs(" return;\n", cfile);
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else
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fputs(" return NULL;\n", cfile);
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if (calcsize)
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fputs(" result->blocksize += nodesize[n->type];\n", cfile);
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else {
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fputs(" new = state->block;\n", cfile);
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fputs(" state->block = (char *)state->block + nodesize[n->type];\n", cfile);
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}
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fputs(" switch (n->type) {\n", cfile);
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for (sp = str ; sp < &str[nstr] ; sp++) {
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for (i = 0 ; i < ntypes ; i++) {
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if (nodestr[i] == sp)
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fprintf(cfile, " case %s:\n", nodename[i]);
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}
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for (i = sp->nfields ; --i >= 1 ; ) {
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fp = &sp->field[i];
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switch (fp->type) {
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case T_NODE:
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if (calcsize) {
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indent(12, cfile);
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fprintf(cfile, "calcsize(n->%s.%s, result);\n",
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sp->tag, fp->name);
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} else {
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indent(12, cfile);
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fprintf(cfile, "new->%s.%s = copynode(n->%s.%s, state);\n",
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sp->tag, fp->name, sp->tag, fp->name);
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}
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break;
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case T_NODELIST:
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if (calcsize) {
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indent(12, cfile);
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fprintf(cfile, "sizenodelist(n->%s.%s, result);\n",
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sp->tag, fp->name);
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} else {
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indent(12, cfile);
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fprintf(cfile, "new->%s.%s = copynodelist(n->%s.%s, state);\n",
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sp->tag, fp->name, sp->tag, fp->name);
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}
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break;
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case T_STRING:
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if (calcsize) {
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indent(12, cfile);
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fprintf(cfile, "result->stringsize += strlen(n->%s.%s) + 1;\n",
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sp->tag, fp->name);
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} else {
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indent(12, cfile);
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fprintf(cfile, "new->%s.%s = nodesavestr(n->%s.%s, state);\n",
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sp->tag, fp->name, sp->tag, fp->name);
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}
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break;
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case T_INT:
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case T_OTHER:
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if (! calcsize) {
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indent(12, cfile);
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fprintf(cfile, "new->%s.%s = n->%s.%s;\n",
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sp->tag, fp->name, sp->tag, fp->name);
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}
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break;
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}
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}
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indent(12, cfile);
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fputs("break;\n", cfile);
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}
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fputs(" };\n", cfile);
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if (! calcsize)
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fputs(" new->type = n->type;\n", cfile);
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}
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static void
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indent(int amount, FILE *fp)
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{
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while (amount >= 8) {
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putc('\t', fp);
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amount -= 8;
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}
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while (--amount >= 0) {
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putc(' ', fp);
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}
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}
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static int
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nextfield(char *buf)
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{
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char *p, *q;
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p = linep;
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while (*p == ' ' || *p == '\t')
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p++;
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q = buf;
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while (*p != ' ' && *p != '\t' && *p != '\0')
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*q++ = *p++;
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*q = '\0';
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linep = p;
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return (q > buf);
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}
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static void
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skipbl(void)
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{
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while (*linep == ' ' || *linep == '\t')
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linep++;
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}
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static int
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readline(void)
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{
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char *p;
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if (fgets(line, 1024, infp) == NULL)
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return 0;
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for (p = line ; *p != '#' && *p != '\n' && *p != '\0' ; p++);
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while (p > line && (p[-1] == ' ' || p[-1] == '\t'))
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p--;
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*p = '\0';
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linep = line;
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linno++;
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if (p - line > BUFLEN)
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error("Line too long");
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return 1;
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}
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static void
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error(const char *msg, ...)
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{
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va_list va;
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va_start(va, msg);
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(void) fprintf(stderr, "line %d: ", linno);
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(void) vfprintf(stderr, msg, va);
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(void) fputc('\n', stderr);
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va_end(va);
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exit(2);
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}
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static char *
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savestr(const char *s)
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{
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char *p;
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if ((p = malloc(strlen(s) + 1)) == NULL)
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error("Out of space");
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(void) strcpy(p, s);
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return p;
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}
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