gcc/c-lang.c

   1 /* Language-specific hook definitions for C front end.
   2    Copyright (C) 1991, 1995, 1997, 1998 Free Software Foundation, Inc.
   3
   4 This file is part of GNU CC.
   5
   6 GNU CC is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU CC is distributed in the hope that it will be useful,
  12 but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 GNU General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU CC; see the file COPYING.  If not, write to
  18 the Free Software Foundation, 59 Temple Place - Suite 330,
  19 Boston, MA 02111-1307, USA.  */
  20
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "tree.h"
  25 #include "input.h"
  26
  27 /* Each of the functions defined here
  28    is an alternative to a function in objc-actions.c.  */
  29
  30 int
  31 lang_decode_option (p)
  32      char *p;
  33 {
  34   return c_decode_option (p);
  35 }
  36
  37 void
  38 lang_init ()
  39 {
  40 #if !USE_CPPLIB
  41   /* the beginning of the file is a new line; check for # */
  42   /* With luck, we discover the real source file's name from that
  43      and put it in input_filename.  */
  44   ungetc (check_newline (), finput);
  45 #endif
  46 }
  47
  48 void
  49 lang_finish ()
  50 {
  51 }
  52
  53 char *
  54 lang_identify ()
  55 {
  56   return "c";
  57 }
  58
  59 void
  60 print_lang_statistics ()
  61 {
  62 }
  63
  64 /* Used by c-lex.c, but only for objc.  */
  65
  66 tree
  67 lookup_interface (arg)
  68      tree arg;
  69 {
  70   return 0;
  71 }
  72
  73 tree
  74 is_class_name (arg)
  75     tree arg;
  76 {
  77   return 0;
  78 }
  79
  80 void
  81 maybe_objc_check_decl (decl)
  82      tree decl;
  83 {
  84 }
  85
  86 int
  87 maybe_objc_comptypes (lhs, rhs, reflexive)
  88      tree lhs, rhs;
  89      int reflexive;
  90 {
  91   return -1;
  92 }
  93
  94 tree
  95 maybe_objc_method_name (decl)
  96     tree decl;
  97 {
  98   return 0;
  99 }
 100
 101 tree
 102 maybe_building_objc_message_expr ()
 103 {
 104   return 0;
 105 }
 106
 107 int
 108 recognize_objc_keyword ()
 109 {
 110   return 0;
 111 }
 112
 113 tree
 114 build_objc_string (len, str)
 115     int len;
 116     char *str;
 117 {
 118   abort ();
 119   return NULL_TREE;
 120 }
 121
 122 void
 123 GNU_xref_begin ()
 124 {
 125   fatal ("GCC does not yet support XREF");
 126 }
 127
 128 void
 129 GNU_xref_end ()
 130 {
 131   fatal ("GCC does not yet support XREF");
 132 }
 133
 134 /* Called at end of parsing, but before end-of-file processing.  */
 135
 136 void
 137 finish_file ()
 138 {
 139 #ifndef ASM_OUTPUT_CONSTRUCTOR
 140   extern tree static_ctors;
 141 #endif
 142 #ifndef ASM_OUTPUT_DESTRUCTOR
 143   extern tree static_dtors;
 144 #endif
 145   extern tree build_function_call                 PROTO((tree, tree));
 146 #if !defined(ASM_OUTPUT_CONSTRUCTOR) || !defined(ASM_OUTPUT_DESTRUCTOR)
 147   tree void_list_node = build_tree_list (NULL_TREE, void_type_node);
 148 #endif
 149 #ifndef ASM_OUTPUT_CONSTRUCTOR
 150   if (static_ctors)
 151     {
 152       tree fnname = get_file_function_name ('I');
 153       start_function (void_list_node,
 154                       build_parse_node (CALL_EXPR, fnname, void_list_node,
 155                                         NULL_TREE),
 156                       NULL_TREE, NULL_TREE, 0);
 157       fnname = DECL_ASSEMBLER_NAME (current_function_decl);
 158       store_parm_decls ();
 159
 160       for (; static_ctors; static_ctors = TREE_CHAIN (static_ctors))
 161         expand_expr_stmt (build_function_call (TREE_VALUE (static_ctors),
 162                                                NULL_TREE));
 163
 164       finish_function (0);
 165
 166       assemble_constructor (IDENTIFIER_POINTER (fnname));
 167     }
 168 #endif
 169 #ifndef ASM_OUTPUT_DESTRUCTOR
 170   if (static_dtors)
 171     {
 172       tree fnname = get_file_function_name ('D');
 173       start_function (void_list_node,
 174                       build_parse_node (CALL_EXPR, fnname, void_list_node,
 175                                         NULL_TREE),
 176                       NULL_TREE, NULL_TREE, 0);
 177       fnname = DECL_ASSEMBLER_NAME (current_function_decl);
 178       store_parm_decls ();
 179
 180       for (; static_dtors; static_dtors = TREE_CHAIN (static_dtors))
 181         expand_expr_stmt (build_function_call (TREE_VALUE (static_dtors),
 182                                                NULL_TREE));
 183
 184       finish_function (0);
 185
 186       assemble_destructor (IDENTIFIER_POINTER (fnname));
 187     }
 188 #endif
 189 }