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/* Functions for handling dependency tracking when reading .class files.

   Copyright (C) 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2, or (at your option)

any later version.

GCC is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with GCC; see the file COPYING.  If not, write to

the Free Software Foundation, 51 Franklin Street, Fifth Floor,

Boston, MA 02110-1301, USA.

Java and all Java-based marks are trademarks or registered trademarks

of Sun Microsystems, Inc. in the United States and other countries.

The Free Software Foundation is independent of Sun Microsystems, Inc.  */

/* Written by Tom Tromey <tromey@cygnus.com>, October 1998.  */

#include "config.h"

#include "system.h"

#include "coretypes.h"

#include "tm.h"

#include "mkdeps.h"

#include <assert.h>

#include "jcf.h"

/* The dependency structure used for this invocation.  */

struct deps *dependencies;

/* The output file, or NULL if we aren't doing dependency tracking.  */

static FILE *dep_out = NULL;

/* Nonzero if system files should be added.  */

static int system_files;

/* Nonzero if we are dumping out dummy dependencies.  */

static int print_dummies;

/* Call this to reset the dependency module.  This is required if

   multiple dependency files are being generated from a single tool

   invocation.  FIXME: we should change our API or just completely use

   the one in mkdeps.h.  */

void

jcf_dependency_reset (void)

{

  if (dep_out != NULL)

    {

      if (dep_out != stdout)

        fclose (dep_out);

      dep_out = NULL;

    }

  if (dependencies != NULL)

    {

      deps_free (dependencies);

      dependencies = NULL;

    }

}

void

jcf_dependency_set_target (const char *name)

{

  /* We just handle this the same as an `add_target'.  */

  if (dependencies != NULL && name != NULL)

    deps_add_target (dependencies, name, 1);

}

void

jcf_dependency_add_target (const char *name)

{

  if (dependencies != NULL)

    deps_add_target (dependencies, name, 1);

}

void

jcf_dependency_set_dep_file (const char *name)

{

  assert (dep_out != stdout);

  if (dep_out)

    fclose (dep_out);

  if (! strcmp (name, "-"))

    dep_out = stdout;

  else

    dep_out = fopen (name, "w");

}

void

jcf_dependency_add_file (const char *filename, int system_p)

{

  if (! dependencies)

    return;

  /* Just omit system files.  */

  if (system_p && ! system_files)

    return;

  deps_add_dep (dependencies, filename);

}

void

jcf_dependency_init (int system_p)

{

  assert (! dependencies);

  system_files = system_p;

  dependencies = deps_init ();

}

void

jcf_dependency_print_dummies (void)

{

  print_dummies = 1;

}

void

jcf_dependency_write (void)

{

  if (! dep_out)

    return;

  assert (dependencies);

  deps_write (dependencies, dep_out, 72);

  if (print_dummies)

    deps_phony_targets (dependencies, dep_out);

  fflush (dep_out);

}