gcc/fortran/libgfortran.h

   1 /* Header file to the Fortran front-end and runtime library
   2    Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 3, or (at your option) any later
   9 version.
  10
  11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  12 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14 for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GCC; see the file COPYING3.  If not see
  18 <http://www.gnu.org/licenses/>.  */
  19
  20
  21 /* Flags to specify which standard/extension contains a feature.
  22    Note that no features were obsoleted nor deleted in F2003.
  23    Please remember to keep those definitions in sync with
  24    gfortran.texi.  */
  25 #define GFC_STD_F2008   (1<<7)  /* New in F2008.  */
  26 #define GFC_STD_LEGACY  (1<<6)  /* Backward compatibility.  */
  27 #define GFC_STD_GNU     (1<<5)  /* GNU Fortran extension.  */
  28 #define GFC_STD_F2003   (1<<4)  /* New in F2003.  */
  29 #define GFC_STD_F95     (1<<3)  /* New in F95.  */
  30 #define GFC_STD_F95_DEL (1<<2)  /* Deleted in F95.  */
  31 #define GFC_STD_F95_OBS (1<<1)  /* Obsolescent in F95.  */
  32 #define GFC_STD_F77     (1<<0)  /* Included in F77, but not deleted or
  33                                    obsolescent in later standards.  */
  34
  35
  36 /* Bitmasks for the various FPE that can be enabled.  */
  37 #define GFC_FPE_INVALID    (1<<0)
  38 #define GFC_FPE_DENORMAL   (1<<1)
  39 #define GFC_FPE_ZERO       (1<<2)
  40 #define GFC_FPE_OVERFLOW   (1<<3)
  41 #define GFC_FPE_UNDERFLOW  (1<<4)
  42 #define GFC_FPE_PRECISION  (1<<5)
  43
  44
  45 /* Bitmasks for the various runtime checks that can be enabled.  */
  46 #define GFC_RTCHECK_BOUNDS      (1<<0)
  47 #define GFC_RTCHECK_ARRAY_TEMPS (1<<1)
  48 #define GFC_RTCHECK_RECURSION   (1<<2)
  49 #define GFC_RTCHECK_DO          (1<<3)
  50 #define GFC_RTCHECK_POINTER     (1<<4)
  51 #define GFC_RTCHECK_MEM         (1<<5)
  52 #define GFC_RTCHECK_ALL        (GFC_RTCHECK_BOUNDS | GFC_RTCHECK_ARRAY_TEMPS \
  53                                 | GFC_RTCHECK_RECURSION | GFC_RTCHECK_DO \
  54                                 | GFC_RTCHECK_POINTER | GFC_RTCHECK_MEM)
  55
  56
  57 /* Possible values for the CONVERT I/O specifier.  */
  58 typedef enum
  59 {
  60   GFC_CONVERT_NONE = -1,
  61   GFC_CONVERT_NATIVE = 0,
  62   GFC_CONVERT_SWAP,
  63   GFC_CONVERT_BIG,
  64   GFC_CONVERT_LITTLE
  65 }
  66 unit_convert;
  67
  68
  69 /* Runtime errors.  */
  70 typedef enum
  71 {
  72   LIBERROR_FIRST = -3,          /* Marker for the first error.  */
  73   LIBERROR_EOR = -2,            /* End of record, must be negative.  */
  74   LIBERROR_END = -1,            /* End of file, must be negative.  */
  75   LIBERROR_OK = 0,              /* Indicates success, must be zero.  */
  76   LIBERROR_OS = 5000,           /* OS error, more info in errno.  */
  77   LIBERROR_OPTION_CONFLICT,
  78   LIBERROR_BAD_OPTION,
  79   LIBERROR_MISSING_OPTION,
  80   LIBERROR_ALREADY_OPEN,
  81   LIBERROR_BAD_UNIT,
  82   LIBERROR_FORMAT,
  83   LIBERROR_BAD_ACTION,
  84   LIBERROR_ENDFILE,
  85   LIBERROR_BAD_US,
  86   LIBERROR_READ_VALUE,
  87   LIBERROR_READ_OVERFLOW,
  88   LIBERROR_INTERNAL,
  89   LIBERROR_INTERNAL_UNIT,
  90   LIBERROR_ALLOCATION,
  91   LIBERROR_DIRECT_EOR,
  92   LIBERROR_SHORT_RECORD,
  93   LIBERROR_CORRUPT_FILE,
  94   LIBERROR_LAST                 /* Not a real error, the last error # + 1.  */
  95 }
  96 libgfortran_error_codes;
  97
  98
  99 /* Default unit number for preconnected standard input and output.  */
 100 #define GFC_STDIN_UNIT_NUMBER 5
 101 #define GFC_STDOUT_UNIT_NUMBER 6
 102 #define GFC_STDERR_UNIT_NUMBER 0
 103
 104
 105 /* FIXME: Increase to 15 for Fortran 2008. Also needs changes to
 106    GFC_DTYPE_RANK_MASK. See PR 36825.  */
 107 #define GFC_MAX_DIMENSIONS 7
 108
 109 #define GFC_DTYPE_RANK_MASK 0x07
 110 #define GFC_DTYPE_TYPE_SHIFT 3
 111 #define GFC_DTYPE_TYPE_MASK 0x38
 112 #define GFC_DTYPE_SIZE_SHIFT 6
 113
 114 typedef enum
 115 {
 116   GFC_DTYPE_UNKNOWN = 0,
 117   GFC_DTYPE_INTEGER,
 118   /* TODO: recognize logical types.  */
 119   GFC_DTYPE_LOGICAL,
 120   GFC_DTYPE_REAL,
 121   GFC_DTYPE_COMPLEX,
 122   GFC_DTYPE_DERIVED,
 123   GFC_DTYPE_CHARACTER
 124 }
 125 dtype;
 126