144 lines
3.6 KiB
C
144 lines
3.6 KiB
C
/* Program to generate "main" a Java(TM) class containing a main method.
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Copyright (C) 1998 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA.
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Java and all Java-based marks are trademarks or registered trademarks
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of Sun Microsystems, Inc. in the United States and other countries.
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The Free Software Foundation is independent of Sun Microsystems, Inc. */
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/* Written by Per Bothner <bothner@cygnus.com> */
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#include "config.h"
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#include "system.h"
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#include "obstack.h"
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#include "gansidecl.h"
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#include "jcf.h"
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#include "tree.h"
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#include "java-tree.h"
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const char main_method_prefix[] = "main__";
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const char main_method_suffix[] = "Pt6JArray1ZPQ34java4lang6String";
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const char class_mangling_prefix[] = "_CL_";
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struct obstack name_obstack;
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extern void error PVPROTO ((const char *, ...))
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ATTRIBUTE_PRINTF_1;
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void
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error VPROTO((const char *msgid, ...))
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{
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#ifndef ANSI_PROTOTYPES
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const char *msgid;
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#endif
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va_list ap;
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VA_START (ap, msgid);
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#ifndef ANSI_PROTOTYPES
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msgid = va_arg (ap, const char *);
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#endif
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vfprintf (stderr, msgid, ap);
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va_end (ap);
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}
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void
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gcc_obstack_init (obstack)
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struct obstack *obstack;
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{
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/* Let particular systems override the size of a chunk. */
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#ifndef OBSTACK_CHUNK_SIZE
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#define OBSTACK_CHUNK_SIZE 0
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#endif
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/* Let them override the alloc and free routines too. */
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#ifndef OBSTACK_CHUNK_ALLOC
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#define OBSTACK_CHUNK_ALLOC xmalloc
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#endif
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#ifndef OBSTACK_CHUNK_FREE
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#define OBSTACK_CHUNK_FREE free
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#endif
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_obstack_begin (obstack, OBSTACK_CHUNK_SIZE, 0,
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(void *(*) ()) OBSTACK_CHUNK_ALLOC,
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(void (*) ()) OBSTACK_CHUNK_FREE);
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}
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int
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main (int argc, const char **argv)
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{
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const char *classname;
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FILE *stream;
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char *mangled_classname;
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if (argc < 2 || argc > 3)
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{
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fprintf (stderr, "Usage: %s CLASSNAME [OUTFILE]\n", argv[0]);
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exit(-1);
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}
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classname = argv[1];
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gcc_obstack_init (&name_obstack);
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append_gpp_mangled_classtype (&name_obstack, classname);
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obstack_1grow (&name_obstack, '\0');
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mangled_classname = obstack_finish (&name_obstack);
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if (argc > 2 && strcmp (argv[2], "-") != 0)
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{
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const char *outfile = argv[2];
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stream = fopen (outfile, "w");
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if (stream == NULL)
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{
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fprintf (stderr, "%s: Cannot open output file: %s\n",
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argv[0], outfile);
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exit (-1);
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}
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}
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else
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stream = stdout;
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fprintf (stream, "extern struct Class %s%s;\n",
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class_mangling_prefix, mangled_classname);
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fprintf (stream, "int main (int argc, const char **argv)\n");
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fprintf (stream, "{\n");
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fprintf (stream, " JvRunMain (&%s%s, argc, argv);\n",
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class_mangling_prefix, mangled_classname);
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fprintf (stream, "}\n");
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if (stream != stdout && fclose (stream) != 0)
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{
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fprintf (stderr, "%s: Failed to close output file %s\n",
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argv[0], argv[2]);
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exit (-1);
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}
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return 0;
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}
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PTR
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xmalloc (size)
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size_t size;
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{
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register PTR val = (PTR) malloc (size);
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if (val == 0)
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{
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fprintf(stderr, "jvgenmain: virtual memory exhausted");
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exit(FATAL_EXIT_CODE);
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}
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return val;
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}
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