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 print-tree.c */
  65
  66 void
  67 lang_print_xnode (file, node, indent)
  68      FILE *file;
  69      tree node;
  70      int indent;
  71 {
  72 }
  73
  74 /* Used by c-lex.c, but only for objc.  */
  75
  76 tree
  77 lookup_interface (arg)
  78      tree arg;
  79 {
  80   return 0;
  81 }
  82
  83 tree
  84 is_class_name (arg)
  85     tree arg;
  86 {
  87   return 0;
  88 }
  89
  90 void
  91 maybe_objc_check_decl (decl)
  92      tree decl;
  93 {
  94 }
  95
  96 int
  97 maybe_objc_comptypes (lhs, rhs, reflexive)
  98      tree lhs, rhs;
  99      int reflexive;
 100 {
 101   return -1;
 102 }
 103
 104 tree
 105 maybe_objc_method_name (decl)
 106     tree decl;
 107 {
 108   return 0;
 109 }
 110
 111 tree
 112 maybe_building_objc_message_expr ()
 113 {
 114   return 0;
 115 }
 116
 117 int
 118 recognize_objc_keyword ()
 119 {
 120   return 0;
 121 }
 122
 123 tree
 124 build_objc_string (len, str)
 125     int len;
 126     char *str;
 127 {
 128   abort ();
 129   return NULL_TREE;
 130 }
 131
 132 void
 133 GNU_xref_begin ()
 134 {
 135   fatal ("GCC does not yet support XREF");
 136 }
 137
 138 void
 139 GNU_xref_end ()
 140 {
 141   fatal ("GCC does not yet support XREF");
 142 }
 143
 144 /* Called at end of parsing, but before end-of-file processing.  */
 145
 146 void
 147 finish_file ()
 148 {
 149 #ifndef ASM_OUTPUT_CONSTRUCTOR
 150   extern tree static_ctors;
 151 #endif
 152 #ifndef ASM_OUTPUT_DESTRUCTOR
 153   extern tree static_dtors;
 154 #endif
 155   extern tree build_function_call                 PROTO((tree, tree));
 156 #if !defined(ASM_OUTPUT_CONSTRUCTOR) || !defined(ASM_OUTPUT_DESTRUCTOR)
 157   tree void_list_node = build_tree_list (NULL_TREE, void_type_node);
 158 #endif
 159 #ifndef ASM_OUTPUT_CONSTRUCTOR
 160   if (static_ctors)
 161     {
 162       tree fnname = get_file_function_name ('I');
 163       start_function (void_list_node,
 164                       build_parse_node (CALL_EXPR, fnname, void_list_node,
 165                                         NULL_TREE),
 166                       NULL_TREE, NULL_TREE, 0);
 167       fnname = DECL_ASSEMBLER_NAME (current_function_decl);
 168       store_parm_decls ();
 169
 170       for (; static_ctors; static_ctors = TREE_CHAIN (static_ctors))
 171         expand_expr_stmt (build_function_call (TREE_VALUE (static_ctors),
 172                                                NULL_TREE));
 173
 174       finish_function (0);
 175
 176       assemble_constructor (IDENTIFIER_POINTER (fnname));
 177     }
 178 #endif
 179 #ifndef ASM_OUTPUT_DESTRUCTOR
 180   if (static_dtors)
 181     {
 182       tree fnname = get_file_function_name ('D');
 183       start_function (void_list_node,
 184                       build_parse_node (CALL_EXPR, fnname, void_list_node,
 185                                         NULL_TREE),
 186                       NULL_TREE, NULL_TREE, 0);
 187       fnname = DECL_ASSEMBLER_NAME (current_function_decl);
 188       store_parm_decls ();
 189
 190       for (; static_dtors; static_dtors = TREE_CHAIN (static_dtors))
 191         expand_expr_stmt (build_function_call (TREE_VALUE (static_dtors),
 192                                                NULL_TREE));
 193
 194       finish_function (0);
 195
 196       assemble_destructor (IDENTIFIER_POINTER (fnname));
 197     }
 198 #endif
 199 }