gcc/java/jcf-depend.c

   1 /* Functions for handling dependency tracking when reading .class files.
   2
   3    Copyright (C) 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.
  21
  22 Java and all Java-based marks are trademarks or registered trademarks
  23 of Sun Microsystems, Inc. in the United States and other countries.
  24 The Free Software Foundation is independent of Sun Microsystems, Inc.  */
  25
  26 /* Written by Tom Tromey <tromey@cygnus.com>, October 1998.  */
  27
  28 #include "config.h"
  29 #include "system.h"
  30 #include "coretypes.h"
  31 #include "tm.h"
  32 #include "mkdeps.h"
  33
  34 #include <assert.h>
  35
  36 #include "jcf.h"
  37
  38 \f
  39
  40 /* The dependency structure used for this invocation.  */
  41 struct deps *dependencies;
  42
  43 /* The output file, or NULL if we aren't doing dependency tracking.  */
  44 static FILE *dep_out = NULL;
  45
  46 /* Nonzero if system files should be added.  */
  47 static int system_files;
  48
  49 /* Nonzero if we are dumping out dummy dependencies.  */
  50 static int print_dummies;
  51
  52 \f
  53
  54 /* Call this to reset the dependency module.  This is required if
  55    multiple dependency files are being generated from a single tool
  56    invocation.  FIXME: we should change our API or just completely use
  57    the one in mkdeps.h.  */
  58 void
  59 jcf_dependency_reset (void)
  60 {
  61   if (dep_out != NULL)
  62     {
  63       if (dep_out != stdout)
  64         fclose (dep_out);
  65       dep_out = NULL;
  66     }
  67
  68   if (dependencies != NULL)
  69     {
  70       deps_free (dependencies);
  71       dependencies = NULL;
  72     }
  73 }
  74
  75 void
  76 jcf_dependency_set_target (const char *name)
  77 {
  78   /* We just handle this the same as an `add_target'.  */
  79   if (dependencies != NULL && name != NULL)
  80     deps_add_target (dependencies, name, 1);
  81 }
  82
  83 void
  84 jcf_dependency_add_target (const char *name)
  85 {
  86   if (dependencies != NULL)
  87     deps_add_target (dependencies, name, 1);
  88 }
  89
  90 void
  91 jcf_dependency_set_dep_file (const char *name)
  92 {
  93   assert (dep_out != stdout);
  94   if (dep_out)
  95     fclose (dep_out);
  96   if (! strcmp (name, "-"))
  97     dep_out = stdout;
  98   else
  99     dep_out = fopen (name, "w");
 100 }
 101
 102 void
 103 jcf_dependency_add_file (const char *filename, int system_p)
 104 {
 105   if (! dependencies)
 106     return;
 107
 108   /* Just omit system files.  */
 109   if (system_p && ! system_files)
 110     return;
 111
 112   deps_add_dep (dependencies, filename);
 113 }
 114
 115 void
 116 jcf_dependency_init (int system_p)
 117 {
 118   assert (! dependencies);
 119   system_files = system_p;
 120   dependencies = deps_init ();
 121 }
 122
 123 void
 124 jcf_dependency_print_dummies (void)
 125 {
 126   print_dummies = 1;
 127 }
 128
 129 void
 130 jcf_dependency_write (void)
 131 {
 132   if (! dep_out)
 133     return;
 134
 135   assert (dependencies);
 136
 137   deps_write (dependencies, dep_out, 72);
 138   if (print_dummies)
 139     deps_phony_targets (dependencies, dep_out);
 140   fflush (dep_out);
 141 }