1/* src.h -- Public #include File
2   Copyright (C) 1995 Free Software Foundation, Inc.
3   Contributed by James Craig Burley.
4
5This file is part of GNU Fortran.
6
7GNU Fortran is free software; you can redistribute it and/or modify
8it under the terms of the GNU General Public License as published by
9the Free Software Foundation; either version 2, or (at your option)
10any later version.
11
12GNU Fortran is distributed in the hope that it will be useful,
13but WITHOUT ANY WARRANTY; without even the implied warranty of
14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15GNU General Public License for more details.
16
17You should have received a copy of the GNU General Public License
18along with GNU Fortran; see the file COPYING.  If not, write to
19the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
2002111-1307, USA.
21
22   Owning Modules:
23      src.c
24
25   Modifications:
26*/
27
28/* Allow multiple inclusion to work. */
29
30#ifndef GCC_F_SRC_H
31#define GCC_F_SRC_H
32
33#include "bad.h"
34#include "top.h"
35
36extern char ffesrc_char_match_init_[256];
37extern char ffesrc_char_match_noninit_[256];
38extern char ffesrc_char_source_[256];
39extern char ffesrc_char_internal_init_[256];
40extern ffebad ffesrc_bad_symbol_init_[256];
41extern ffebad ffesrc_bad_symbol_noninit_[256];
42extern bool ffesrc_check_symbol_;
43extern bool ffesrc_ok_match_init_upper_;
44extern bool ffesrc_ok_match_init_lower_;
45extern bool ffesrc_ok_match_noninit_upper_;
46extern bool ffesrc_ok_match_noninit_lower_;
47
48/* These C-language-syntax modifiers could avoid the match arg if gcc's
49   extension allowing macros to generate dynamic labels was used.  They
50   could use the no_match arg (and the "caller's" label defs) if there
51   was a way to say "goto default" in a switch statement.  Oh well.
52
53   NOTE: These macro assume "case FFESRC_CASE_MATCH_[NON]INIT(...):" is used
54   to invoke them, and thus assume the "above" case does not fall through to
55   this one.  This syntax was chosen to keep indenting tools working.  */
56
57#define FFESRC_CASE_MATCH_INIT(upper, lower, match, no_match) \
58 upper: if (!ffesrc_ok_match_init_upper_) goto no_match; \
59  else goto match; \
60 case lower: if (!ffesrc_ok_match_init_lower_) goto no_match; \
61 match
62
63#define FFESRC_CASE_MATCH_NONINIT(upper, lower, match, no_match) \
64 upper: if (!ffesrc_ok_match_noninit_upper_) goto no_match; \
65  else goto match; \
66 case lower: if (!ffesrc_ok_match_noninit_lower_) goto no_match; \
67 match
68
69/* If character is ok in a symbol name (not including intrinsic names),
70   returns FFEBAD, else returns something else, type ffebad.  */
71
72#define ffesrc_bad_char_symbol_init(c) \
73  (ffesrc_bad_symbol_init_[(unsigned int) (c)])
74#define ffesrc_bad_char_symbol_noninit(c) \
75  (ffesrc_bad_symbol_noninit_[(unsigned int) (c)])
76
77/* Returns TRUE if character is ok in a symbol name (including
78   intrinsic names).  Doesn't care about case settings, this is
79   used just for parsing (before semantic complaints about symbol-
80   name casing and such).  One specific usage is to decide whether
81   an underscore is valid as the first or subsequent character in
82   some symbol name -- if not, an underscore is a separate token
83   (while lexing, for example).  Note that ffesrc_is_name_init
84   must return TRUE for a (not necessarily proper) subset of
85   characters for which ffelex_is_firstnamechar returns TRUE.  */
86
87#define ffesrc_is_name_init(c) \
88  ((ISALPHA ((c))) || (! (1 || ffe_is_90 ()) && ((c) == '_')))
89#define ffesrc_is_name_noninit(c) \
90  ((ISALNUM ((c))) || (! (1 || ffe_is_90 ()) && ((c) == '_')))
91
92/* Test if source-translated character matches given alphabetic character
93   (passed in both uppercase and lowercase, to allow for custom speedup
94   of compilation in environments where compile-time options aren't needed
95   for casing).	 */
96
97#define ffesrc_char_match_init(c, up, low) \
98  (ffesrc_char_match_init_[(unsigned int) (c)] == up)
99
100#define ffesrc_char_match_noninit(c, up, low) \
101  (ffesrc_char_match_noninit_[(unsigned int) (c)] == up)
102
103/* Translate character from input-file form to source form.  */
104
105#define ffesrc_char_source(c) (ffesrc_char_source_[(unsigned int) (c)])
106
107/* Translate internal character (upper/lower) to source form in an
108   initial-character context (i.e. ffesrc_char_match_init of the result
109   will always succeed).  */
110
111#define ffesrc_char_internal_init(up, low) \
112  (ffesrc_char_internal_init_[(unsigned int) (up)])
113
114/* Returns TRUE if a name representing a symbol should be checked for
115   validity according to compile-time options.	That is, if it is possible
116   that ffesrc_bad_char_symbol(c) can return something other than FFEBAD
117   for any valid character in an ffelex NAME(S) token.	*/
118
119#define ffesrc_check_symbol() ffesrc_check_symbol_
120
121#define ffesrc_init_0()
122void ffesrc_init_1 (void);
123#define ffesrc_init_2()
124#define ffesrc_init_3()
125#define ffesrc_init_4()
126int ffesrc_strcmp_1ns2i (ffeCase mcase, const char *var, int len,
127			 const char *str_ic);
128int ffesrc_strcmp_2c (ffeCase mcase, const char *var, const char *str_uc,
129		      const char *str_lc, const char *str_ic);
130int ffesrc_strncmp_2c (ffeCase mcase, const char *var, const char *str_uc,
131		       const char *str_lc, const char *str_ic, int len);
132#define ffesrc_terminate_0()
133#define ffesrc_terminate_1()
134#define ffesrc_terminate_2()
135#define ffesrc_terminate_3()
136#define ffesrc_terminate_4()
137
138/* End of #include file. */
139
140#endif /* ! GCC_F_SRC_H */
141