gcc/f/src.h

   1 /* src.h -- Public #include File
   2    Copyright (C) 1995 Free Software Foundation, Inc.
   3    Contributed by James Craig Burley.
   4
   5 This file is part of GNU Fortran.
   6
   7 GNU Fortran 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 GNU Fortran 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 GNU Fortran; see the file COPYING.  If not, write to
  19 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, 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
  36 extern char ffesrc_char_match_init_[256];
  37 extern char ffesrc_char_match_noninit_[256];
  38 extern char ffesrc_char_source_[256];
  39 extern char ffesrc_char_internal_init_[256];
  40 extern ffebad ffesrc_bad_symbol_init_[256];
  41 extern ffebad ffesrc_bad_symbol_noninit_[256];
  42 extern bool ffesrc_check_symbol_;
  43 extern bool ffesrc_ok_match_init_upper_;
  44 extern bool ffesrc_ok_match_init_lower_;
  45 extern bool ffesrc_ok_match_noninit_upper_;
  46 extern 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()
 122 void ffesrc_init_1 (void);
 123 #define ffesrc_init_2()
 124 #define ffesrc_init_3()
 125 #define ffesrc_init_4()
 126 int ffesrc_strcmp_1ns2i (ffeCase mcase, const char *var, int len,
 127                          const char *str_ic);
 128 int ffesrc_strcmp_2c (ffeCase mcase, const char *var, const char *str_uc,
 129                       const char *str_lc, const char *str_ic);
 130 int 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 */