gdb/f-exp.h

   1 /* Definitions for Fortran expressions
   2
   3    Copyright (C) 2020, 2021 Free Software Foundation, Inc.
   4
   5    This file is part of GDB.
   6
   7    This program 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 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef FORTRAN_EXP_H
  21 #define FORTRAN_EXP_H
  22
  23 #include "expop.h"
  24
  25 extern struct value *eval_op_f_abs (struct type *expect_type,
  26                                     struct expression *exp,
  27                                     enum noside noside,
  28                                     enum exp_opcode opcode,
  29                                     struct value *arg1);
  30 extern struct value *eval_op_f_mod (struct type *expect_type,
  31                                     struct expression *exp,
  32                                     enum noside noside,
  33                                     enum exp_opcode opcode,
  34                                     struct value *arg1, struct value *arg2);
  35 extern struct value *eval_op_f_ceil (struct type *expect_type,
  36                                      struct expression *exp,
  37                                      enum noside noside,
  38                                      enum exp_opcode opcode,
  39                                      struct value *arg1);
  40 extern struct value *eval_op_f_floor (struct type *expect_type,
  41                                       struct expression *exp,
  42                                       enum noside noside,
  43                                       enum exp_opcode opcode,
  44                                       struct value *arg1);
  45 extern struct value *eval_op_f_modulo (struct type *expect_type,
  46                                        struct expression *exp,
  47                                        enum noside noside,
  48                                        enum exp_opcode opcode,
  49                                        struct value *arg1, struct value *arg2);
  50 extern struct value *eval_op_f_cmplx (struct type *expect_type,
  51                                       struct expression *exp,
  52                                       enum noside noside,
  53                                       enum exp_opcode opcode,
  54                                       struct value *arg1, struct value *arg2);
  55 extern struct value *eval_op_f_kind (struct type *expect_type,
  56                                      struct expression *exp,
  57                                      enum noside noside,
  58                                      enum exp_opcode opcode,
  59                                      struct value *arg1);
  60 extern struct value *eval_op_f_associated (struct type *expect_type,
  61                                            struct expression *exp,
  62                                            enum noside noside,
  63                                            enum exp_opcode opcode,
  64                                            struct value *arg1);
  65 extern struct value *eval_op_f_associated (struct type *expect_type,
  66                                            struct expression *exp,
  67                                            enum noside noside,
  68                                            enum exp_opcode opcode,
  69                                            struct value *arg1,
  70                                            struct value *arg2);
  71 extern struct value * eval_op_f_allocated (struct type *expect_type,
  72                                            struct expression *exp,
  73                                            enum noside noside,
  74                                            enum exp_opcode op,
  75                                            struct value *arg1);
  76
  77 namespace expr
  78 {
  79
  80 using fortran_abs_operation = unop_operation<UNOP_ABS, eval_op_f_abs>;
  81 using fortran_ceil_operation = unop_operation<UNOP_FORTRAN_CEILING,
  82                                               eval_op_f_ceil>;
  83 using fortran_floor_operation = unop_operation<UNOP_FORTRAN_FLOOR,
  84                                                eval_op_f_floor>;
  85 using fortran_kind_operation = unop_operation<UNOP_FORTRAN_KIND,
  86                                               eval_op_f_kind>;
  87 using fortran_allocated_operation = unop_operation<UNOP_FORTRAN_ALLOCATED,
  88                                                    eval_op_f_allocated>;
  89
  90 using fortran_mod_operation = binop_operation<BINOP_MOD, eval_op_f_mod>;
  91 using fortran_modulo_operation = binop_operation<BINOP_FORTRAN_MODULO,
  92                                                  eval_op_f_modulo>;
  93 using fortran_associated_1arg = unop_operation<FORTRAN_ASSOCIATED,
  94                                                eval_op_f_associated>;
  95 using fortran_associated_2arg = binop_operation<FORTRAN_ASSOCIATED,
  96                                                 eval_op_f_associated>;
  97
  98 /* The Fortran "complex" operation.  */
  99 class fortran_cmplx_operation
 100   : public tuple_holding_operation<operation_up, operation_up>
 101 {
 102 public:
 103
 104   using tuple_holding_operation::tuple_holding_operation;
 105
 106   value *evaluate (struct type *expect_type,
 107                    struct expression *exp,
 108                    enum noside noside) override
 109   {
 110     value *arg1 = std::get<0> (m_storage)->evaluate (nullptr, exp, noside);
 111     value *arg2 = std::get<1> (m_storage)->evaluate (value_type (arg1),
 112                                                      exp, noside);
 113     return eval_op_f_cmplx (expect_type, exp, noside, BINOP_FORTRAN_CMPLX,
 114                             arg1, arg2);
 115   }
 116
 117   enum exp_opcode opcode () const override
 118   { return BINOP_FORTRAN_CMPLX; }
 119 };
 120
 121 /* OP_RANGE for Fortran.  */
 122 class fortran_range_operation
 123   : public tuple_holding_operation<enum range_flag, operation_up, operation_up,
 124                                    operation_up>
 125 {
 126 public:
 127
 128   using tuple_holding_operation::tuple_holding_operation;
 129
 130   value *evaluate (struct type *expect_type,
 131                    struct expression *exp,
 132                    enum noside noside) override
 133   {
 134     error (_("ranges not allowed in this context"));
 135   }
 136
 137   range_flag get_flags () const
 138   {
 139     return std::get<0> (m_storage);
 140   }
 141
 142   value *evaluate0 (struct expression *exp, enum noside noside) const
 143   {
 144     return std::get<1> (m_storage)->evaluate (nullptr, exp, noside);
 145   }
 146
 147   value *evaluate1 (struct expression *exp, enum noside noside) const
 148   {
 149     return std::get<2> (m_storage)->evaluate (nullptr, exp, noside);
 150   }
 151
 152   value *evaluate2 (struct expression *exp, enum noside noside) const
 153   {
 154     return std::get<3> (m_storage)->evaluate (nullptr, exp, noside);
 155   }
 156
 157   enum exp_opcode opcode () const override
 158   { return OP_RANGE; }
 159 };
 160
 161 /* In F77, functions, substring ops and array subscript operations
 162    cannot be disambiguated at parse time.  This operation handles
 163    both, deciding which do to at evaluation time.  */
 164 class fortran_undetermined
 165   : public tuple_holding_operation<operation_up, std::vector<operation_up>>
 166 {
 167 public:
 168
 169   using tuple_holding_operation::tuple_holding_operation;
 170
 171   value *evaluate (struct type *expect_type,
 172                    struct expression *exp,
 173                    enum noside noside) override;
 174
 175   enum exp_opcode opcode () const override
 176   { return OP_F77_UNDETERMINED_ARGLIST; }
 177
 178 private:
 179
 180   value *value_subarray (value *array, struct expression *exp,
 181                          enum noside noside);
 182 };
 183
 184 /* Single-argument form of Fortran ubound/lbound intrinsics.  */
 185 class fortran_bound_1arg
 186   : public tuple_holding_operation<exp_opcode, operation_up>
 187 {
 188 public:
 189
 190   using tuple_holding_operation::tuple_holding_operation;
 191
 192   value *evaluate (struct type *expect_type,
 193                    struct expression *exp,
 194                    enum noside noside) override;
 195
 196   enum exp_opcode opcode () const override
 197   { return std::get<0> (m_storage); }
 198 };
 199
 200 /* Two-argument form of Fortran ubound/lbound intrinsics.  */
 201 class fortran_bound_2arg
 202   : public tuple_holding_operation<exp_opcode, operation_up, operation_up>
 203 {
 204 public:
 205
 206   using tuple_holding_operation::tuple_holding_operation;
 207
 208   value *evaluate (struct type *expect_type,
 209                    struct expression *exp,
 210                    enum noside noside) override;
 211
 212   enum exp_opcode opcode () const override
 213   { return std::get<0> (m_storage); }
 214 };
 215
 216 } /* namespace expr */
 217
 218 #endif /* FORTRAN_EXP_H */