301 lines
7.1 KiB
C
301 lines
7.1 KiB
C
/* Language-specific hook definitions for CHILL front end.
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Copyright (C) 1992, 93, 1994, 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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#include "config.h"
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#include "system.h"
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#include "tree.h"
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#include "ch-tree.h"
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#include "lex.h"
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#include "input.h"
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#include "toplev.h"
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/* Type node for boolean types. */
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tree boolean_type_node;
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/* True if STRING(INDEX) yields a CHARS(1) (or BOOLS(1)) rather than
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a CHAR (or BOOL). Also, makes CHARS(1) similar for CHAR,
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and BOOLS(1) similar to BOOL. This is for compatibility
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for the 1984 version of Z.200.*/
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int flag_old_strings = 0;
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/* This is set non-zero to force user input tokens to lower case.
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This is non-standard. See Z.200, page 8. */
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int ignore_case = 1;
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/* True if reserved and predefined words ('special' words in the Z.200
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terminology) are in uppercase. Obviously, this had better not be
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true if we're ignoring input case. */
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int special_UC = 0;
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/* The actual name of the input file, regardless of any #line directives */
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char* chill_real_input_filename;
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extern FILE* finput;
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extern int maximum_field_alignment;
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/* return 1 if the expression tree given has all
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constant nodes as its leaves; return 0 otherwise. */
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int
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deep_const_expr (exp)
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tree exp;
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{
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enum chill_tree_code code;
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int length;
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int i;
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if (exp == NULL_TREE)
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return 0;
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code = TREE_CODE (exp);
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length = tree_code_length[(int) code];
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/* constant leaf? return TRUE */
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if (TREE_CODE_CLASS (code) == 'c')
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return 1;
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/* recursively check next level down */
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for (i = 0; i < length; i++)
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if (! deep_const_expr (TREE_OPERAND (exp, i)))
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return 0;
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return 1;
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}
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tree
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const_expr (exp)
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tree exp;
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{
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if (TREE_CODE (exp) == INTEGER_CST)
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return exp;
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if (TREE_CODE (exp) == CONST_DECL)
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return const_expr (DECL_INITIAL (exp));
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if (TREE_CODE_CLASS (TREE_CODE (exp)) == 'd'
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&& DECL_INITIAL (exp) != NULL_TREE
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&& TREE_READONLY (exp))
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return DECL_INITIAL (exp);
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if (deep_const_expr (exp))
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return exp;
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if (TREE_CODE (exp) != ERROR_MARK)
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error ("non-constant expression");
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return error_mark_node;
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}
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/* Each of the functions defined here
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is an alternative to a function in objc-actions.c. */
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/* Used by c-lex.c, but only for objc. */
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tree
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lookup_interface (arg)
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tree arg ATTRIBUTE_UNUSED;
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{
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return 0;
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}
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int
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maybe_objc_comptypes (lhs, rhs)
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tree lhs ATTRIBUTE_UNUSED, rhs ATTRIBUTE_UNUSED;
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{
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return -1;
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}
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tree
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maybe_building_objc_message_expr ()
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{
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return 0;
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}
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int
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recognize_objc_keyword ()
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{
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return 0;
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}
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void
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lang_init_options ()
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{
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}
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/* used by print-tree.c */
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void
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lang_print_xnode (file, node, indent)
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FILE *file ATTRIBUTE_UNUSED;
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tree node ATTRIBUTE_UNUSED;
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int indent ATTRIBUTE_UNUSED;
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{
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}
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void
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GNU_xref_begin ()
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{
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fatal ("GCC does not yet support XREF");
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}
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void
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GNU_xref_end ()
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{
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fatal ("GCC does not yet support XREF");
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}
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/*
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* process chill-specific compiler command-line options
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*/
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int
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lang_decode_option (argc, argv)
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int argc;
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char **argv;
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{
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char *p = argv[0];
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static int explicit_ignore_case = 0;
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if (!strcmp(p, "-lang-chill"))
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; /* do nothing */
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else if (!strcmp (p, "-fruntime-checking"))
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{
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range_checking = 1;
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empty_checking = 1;
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}
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else if (!strcmp (p, "-fno-runtime-checking"))
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{
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range_checking = 0;
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empty_checking = 0;
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runtime_checking_flag = 0;
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}
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else if (!strcmp (p, "-flocal-loop-counter"))
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flag_local_loop_counter = 1;
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else if (!strcmp (p, "-fno-local-loop-counter"))
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flag_local_loop_counter = 0;
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else if (!strcmp (p, "-fold-strings"))
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flag_old_strings = 1;
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else if (!strcmp (p, "-fno-old-strings"))
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flag_old_strings = 0;
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else if (!strcmp (p, "-fignore-case"))
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{
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explicit_ignore_case = 1;
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if (special_UC)
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{
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error ("Ignoring case upon input and");
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error ("making special words uppercase wouldn't work.");
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}
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else
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ignore_case = 1;
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}
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else if (!strcmp (p, "-fno-ignore-case"))
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ignore_case = 0;
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else if (!strcmp (p, "-fspecial_UC"))
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{
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if (explicit_ignore_case)
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{
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error ("Making special words uppercase and");
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error (" ignoring case upon input wouldn't work.");
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}
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else
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special_UC = 1, ignore_case = 0;
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}
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else if (!strcmp (p, "-fspecial_LC"))
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special_UC = 0;
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else if (!strcmp (p, "-fpack"))
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maximum_field_alignment = BITS_PER_UNIT;
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else if (!strcmp (p, "-fno-pack"))
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maximum_field_alignment = 0;
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else if (!strcmp (p, "-fchill-grant-only"))
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grant_only_flag = 1;
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else if (!strcmp (p, "-fgrant-only"))
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grant_only_flag = 1;
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/* user has specified a seize-file path */
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else if (p[0] == '-' && p[1] == 'I')
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register_seize_path (&p[2]);
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if (!strcmp(p, "-itu")) /* Force Z.200 semantics */
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{
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pedantic = 1; /* FIXME: new flag name? */
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flag_local_loop_counter = 1;
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}
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else
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return c_decode_option (argc, argv);
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return 1;
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}
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void
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chill_print_error_function (file)
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char *file;
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{
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static tree last_error_function = NULL_TREE;
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static struct module *last_error_module = NULL;
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if (last_error_function == current_function_decl
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&& last_error_module == current_module)
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return;
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last_error_function = current_function_decl;
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last_error_module = current_module;
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if (file)
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fprintf (stderr, "%s: ", file);
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if (current_function_decl == global_function_decl
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|| current_function_decl == NULL_TREE)
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{
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if (current_module == NULL)
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fprintf (stderr, "At top level:\n");
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else
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fprintf (stderr, "In module %s:\n",
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IDENTIFIER_POINTER (current_module->name));
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}
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else
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{
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char *kind = "function";
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char *name = (*decl_printable_name) (current_function_decl, 2);
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fprintf (stderr, "In %s `%s':\n", kind, name);
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}
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}
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/* Print an error message for invalid use of an incomplete type.
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VALUE is the expression that was used (or 0 if that isn't known)
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and TYPE is the type that was invalid. */
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void
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incomplete_type_error (value, type)
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tree value ATTRIBUTE_UNUSED;
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tree type ATTRIBUTE_UNUSED;
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{
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error ("internal error - use of undefined type");
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}
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void
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lang_init ()
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{
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extern void (*print_error_function) PROTO((char*));
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chill_real_input_filename = input_filename;
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/* the beginning of the file is a new line; check for # */
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/* With luck, we discover the real source file's name from that
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and put it in input_filename. */
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ungetc (check_newline (), finput);
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/* set default grant file */
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set_default_grant_file ();
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print_error_function = chill_print_error_function;
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}
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